CARRIER Furnace/Heater, Gas Manual L0902516
58MVC080-F-10114 58MVC080-F-10114 CARRIER GAS FURNACE - Manuals and Guides L0902516 View the owners manual for your CARRIER GAS FURNACE #58MVC080F10114. Home:Heating & Cooling Parts:Carrier Parts:Carrier GAS FURNACE Manual
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Installation Instructions
11
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NOTE:
Read
the installation.
the
entire
instruction
Please retain these instructions
for future reference.
manual
with the furnace
before
after installation
NOTE: This furnace can be installed as a (2-pipe) direct
or (1-pipe) non-direct
vent condensing gas furnace.
Special
Venting
Installation
Requirements
in Canada
for Installations
must conform
starting
Consignes sp_ciales pour l'installation de ventillation au Canada
of CSA
B149 code.
Vent systems must be composed
of pipe, fittings,
cements,
and primers listed to ULC $636.
The special vent
fittings
and accessory
concentric
vent termination
kits and
accessory
use with
external drain trap have been certified to ULC $636 for
those IPEX PVC vent components
which have been
certified to this standard.
In Canada, the primer and cement must
be of the same manufacturer
as the vent system - IPEX System
636, PVC/CPVC
Primer, Purple Violet for Flue Gas Venting and
IPEX System 636(1)
, PVC Cement for Flue Gas Venting, rated
Class IIA, 65 deg C. must be used with this venting system - do
TM
not mix primers and cements from one manufacturer
with a vent
system from a different manufacturer.
Follow the manufacturer's
instructions in the use of primer and cement
or cement beyond its expiration date.
and never use primer
The safe operation,
as defined by ULC $636, of the vent system
is based on following
these installation
instructions,
the vent
system manufacturer's
installation instructions,
and proper use of
primer and cement. All fire stop and roof flashing used with this
system must be UL listed material. Acceptability
under Canadian
standard CSA B149 is dependent
upon full compliance
with all
installation
instructions.
Under this standard, it is recommended
that the vent system be checked once a year by qualified service
personnel.
The authority
having
jurisdiction
(gas inspection
authority,
municipal
building
department,
fire department,
etc) should be
consulted before installation
to determine
the need to obtain a
permit.
(1) System 636 is a trademark
of IPEX Inc.
9001:2000
vent
in Canada
to the requirements
ISO
L'installation faite au Canada doit se conformer aux exigences du
code CSA B149. Ce syst_me de ventillation doit se composer de
tuyaux, raccords, ciments et appr_ts conformes au ULC $636. La
tuyauterie de ventillation des gaz, ses accessoires, le terminal
concentrique mural ainsi que l'ensemble du drain de condensat
ext_rieur ont _t_ certifies ULCS 636 pour l'application des
composantes IPEX PVC qui sont certifi_es 5. ce standard. Au
Canada l'appr_t et le ciment doivent _tre du m_me manufacturier
que le syst_me de ventillation - IPEX Syst_me 636, Appr_t
PVC/CPVC. Mauve Violette pour conduit en _vacuation des gaz
et IPEX Syst_me 636(1)
ciment pour PVC pour conduit en
_vacuation des gaz, _valu_ CLASSE IIA, 65 deg. C. doit _tre
utilis_ avec ce syst_eme d'_vacuation - ne pas m_langer l'appr_t
et le ciment d'un manufacturier avec le syst_me de ventillation
d'un autre manufacturier.
Bien suivre les indications du
manufacturier lors de l'utilisation de l'appr_t et du ciment et ne
pas utiliser ceux-ci si la date d'expiration est atteinte.
TM,
L'op_ration s_curitaire, tel que d_finit par ULC $636, du syst_me
de ventilation est bass sur les instructions d'installation suivantes,
ainsi que l'usage appropri_ de l'appr_t et ciment. Tout arr_t feu et
solin de toit utilis_s avec ce syst_me doivent _tre des mat_riaux
list,s UL L'acceptation du standard Canadien CSA B419 est
directement reli_ 5. l'installation conforme aux instructions cihaut mentionn_es.
Le standard Canadien recommande 1'
inspection par un personel qualifi_ et ce, une fois par annie.
Les autorit_es ayant juridiction (inspecteurs de gas, inspecteurs en
bfitiments, d@artement
des incendies, etc) devraient _tre
consult_es avant l'installation afin de d_terminer si un permis est
requis.
Required
Notice for Massachusetts
Installations
IMPORTANT
The Commonwealth of Massachusetts requires compliance with regulation 248 CMR as follows:
5.08: Modifications to NFPA-54, Chapter 10
2) Revise 10.8.3 by adding the following additional requirements:
(a.)For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in
whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the
side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting,
including but not limited to decks and porches, the following requirements shall be satisfied:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side wall horizontal vented
gas fueled equipment, the installing plumber or gasfitter shall observe that a hard wired carbon monoxide detector with an
alarm and battery back-up is installed on the floor level where the gas equipment is to be installed. In addition, the installing
plumber or gasfitter shall observe that a battery operated or hard wired carbon monoxide detector with an alarm is installed on
each additional level of the dwelling, building or structure served by the side wall horizontal vented gas fueled equipment. It
shall be the responsibility of the property owner to secure the services of qualified licensed professionals for the installation of
hard wired carbon monoxide detectors
a. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired
carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level.
b. In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner shall
have a period of thirty (30) days to comply with the above requirements; provided, however, that during said thirty (30) day
period, a battery operated carbon monoxide detector with an alarm shall be installed.
2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the
above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified.
3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum
height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled
heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, "GAS VENT
DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS".
4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the
installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance
with the provisions of 248 CMR 5.08(2)(a)1 through 4.
5. EXEMPTIONS: The following equipment is exempt from 248 CMR 5.08(2)(a)1 through 4:
(1 .) The equipment listed in Chapter 10 entitled "Equipment Not Required To Be Vented" in the most current edition of NFPA
54 as adopted by the Board; and
(2.) Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure separate from the
dwelling, building or structure used in whole or in part for residential purposes.
(c.) MANUFACTURER REQUIREMENTS
- GAS EQUIPMENT VENTING SYSTEM PROVIDED. When the
manufacturer of Product Approved side wall horizontally vented gas equipment provides a venting system design or
venting system components with the equipment, the instructions provided by the manufacturer for installation of the
equipment and the venting system shall include:
1. Detailed instructions for the installation of the venting system design or the venting system components; and
2. A complete parts list for the venting system design or venting system.
(d.)MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED. When the
manufacturer of a Product Approved side wall horizontally vented gas fueled equipment does not provide the parts
for venting the flue gases, but identifies "special venting systems", the following requirements shall be satisfied by
the manufacturer:
1. The referenced "special venting
instructions; and
system"
instructions
2. The "special venting systems" shall be Product Approved
parts list and detailed installation instructions.
shall be included
with the appliance
or equipment
installation
by the Board, and the instructions for that system shall include a
(e.)A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment,
all venting instructions, all parts lists for venting instructions, and/or all venting design instructions shall remain with
the appliance or equipment at the completion of the installation.
For questions regarding these requirements, please contact the Commonwealth of Massachusetts Board of State Examiners of Plumbers and
Gas Fitters, 239 Causeway Street, Boston, MA 02114. 617-727-9952.
TABLE
OF CONTENTS
SAFETY
CONSIDERATIONS
PAGE
IMPORTANT INFORMATION
........................
2
SAFETY CONSIDERATIONS
........................
3
CODES AND STANDARDS ..........................
ELECTROSTATIC
INTRODUCTION
APPLICATIONS
Upflow
Downflow
7
DISCHARGE (ESD) PRECAUTIONS
..................................
.. 7
7
...................................
8
........................................
8
.....................................
11
Horizontal Left ..................................
12
Horizontal Right
15
LOCATION
................................
......................................
INSTALLATION
16
..................................
18
Air Ducts .......................................
21
Air for Combustion and Ventilation
..................
28
Combustion Air Pipe ..............................
34
Vent Pipe
36
......................................
Vent Termination
................................
39
Condensate Drain ................................
43
START-UP, ADJUSTMENTS,
CHECKLIST
AND SAFETY CHECK
.....................................
...
44
FURNACE
RELIABILITY
HAZARD
Failure to follow this caution may result in unit damage.
Improper installation or misapplication of furnace may
require excessive servicing or cause premature component
failure. This furnace can be vented as either a direct vent
(2-pipe) furnace or as an optional ventilated combustion air
application.
A direct vent system shall be installed in accordance with
the direct vent (2-pipe) procedures in the Combustion Air
and Vent Pipe Systems section within this instruction. For
optional ventilated combustion air applications, refer to the
ventilated combustion air option procedures in the same
section.
Application of this furnace should be indoors with special
attention given to vent sizing and material, gas input rate,
air temperature rise, unit leveling, and unit sizing.
FIRE,
EXPLOSION,
CARBON
MONOXIDE
ELECTRICAL
POISONING
SHOCK
HAZARD
AND
60
Failure to follow this warning could result in personal
iniury, death, or property damage.
AIRFLOW
d>
Improper
installation,
adjustment,
alteration,
service,
maintenance, or use can cause carbon monoxide poisoning,
explosion, fire, electrical shock, or other conditions which
may cause personal iniury or property damage. Consult a
qualified installer, service agency, local gas supplier, or your
distributor or branch for information or assistance. The
qualified
installer
or
agency
must
use
only
factory-authorized
and listed kits or accessories when
modifying this product.
"i
©
AIRFLOW
A93041
Fig. l - Furnace
Orientation
CUT
HAZARD
Failure to follow this caution may result in personal iniury.
Sheet metal parts may have sharp edges or burrs. Use care
and wear appropriate protective clothing and gloves when
handling parts.
Improper
installation,
adjustment,
alteration,
service,
maintenance, or use can cause explosion, fire, electrical shock, or
other conditions which may cause death, personal iniury, or
property damage. Consult a qualified installer, service agency, or
your distributor or branch for information or assistance. The
qualified installer or agency must use factory-authorized kits or
accessories when modifying this product. Refer to the individual
instructions packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Have a fire extinguisher available. Read these
instructions
thoroughly and follow all warnings or cautions
include in literature and attached to the unit. Consult local
building codes, the current editions of the National Fuel Gas
Code (NFGC) NFPA 54/ANSI
Z223.1 and the National
Electrical Code (NEC) NFPA 70.
©
664 ram)
26 i¢,,
_26
(51 mm)
COMBUSTION
;a IN
--POWER
!_lN(13mm)
GAS
'l:,r,,
OUTLET
LOCATION
(DOWNFLOW
HORIZONTAL
(14 ram)
D--
(21 ram)
TRAP
&
LEFT)
!_z IN
D]A GAS
_19"(463
mm)_
ram) _
I/
&
"_
COMBUSTION
_!3fl6"
(21 ram)
T_4 E R M O S+_,]r_'T
3O 1<
(.........
b6"|
OONN
........
17
...... /
1
2IN
VENTCONN
AIR OONN
GAS
CONN
]_INDIA(13mm)
TYP
mm)
DRAIN
(DOWNFLOW
HORIZONTAL
RIGHT)
OR ALTERNATE
CONN
(667
22 5i_" (567
"{P
CONDENSATE
D]A (22ram)
CONN
ACCESSORY
POWER
ENTRY
(664 mm)
2614"
A_
2 IN
(724 mm)
%6"
AIRFLOW
/+-.
)
2
f_
Ry
/
N _/T,r,l_5
_'_"-
39 7S"
_/ENTSONN
(.........
)
(829 ram)
1
LOCATION
(ALTERNATE
UPFLOW)
DRAIN
TRAP
]
SIDE
1
9_s"
TYP
(240 ram)
g
,
(439
b
DRAIN
LOCATION
11'!6"_
(UPFLOW)
DRAIN
_E_
_
(17 ram)
1'16"
(17 ram)
1.
2.
LOCATION
(UPFLOW)
..............
FOR
ram)
NOTES:
<1
..........
_NLET
(684
INLET
17 _16"
/
J
HORIZONTAL
HANGING
_
22 11"TYP
(a65 ram)
------'_'_1
_g_6"
--------_OT_;_1r'47----I
I
......
(11 ram)
"1 ........
)
(614 ram)
Minimum
return-air
openings
at furnace,
based on metal duct. If flex duct is used,
see flex duct manufactureris
recommendations
for equivalent
diameters.
Minimum
return-air
opening
at furnace:
a. For 800 OFM
16-in. (408mm)
round or 141A (388 mm)x 12-in. (305 mm) rectangle
b. For !200
CFM 20-in. (508mm)
round or 141# (368mm)x
197Mn.
(495mm).rectangle
c. For !600
CFM 22-in. (558mm)
round or 141# (368mm)x
231/4-in,(591mm)
[ectangle
d. For aidlow requirements
above
1800 CFM, see Air Delivery
table in Product
Data
literature
for specific
use of single side inlets. The use of both side inlets, a
combination
of 1 side and the bottom,
or the bottom only will ensure adequate
return air openings
for airflow
requirements
above 1800 CFM.
A05124
Dimensions
UNIT
SIZE
(In. / mm)
A
080-14
/ 042080
080-14
/ 042080
080-20
/ 080080
100-20
/ 080100
120-20
/ 080120
17-1/2
D
/ 445
/ 403
21 / 533
19-3/8
/ 492
19-1/2
/ 495
21 / 533
19-3/8
/ 492
19-1/2
/ 495
21 / 533
19-3/8
/ 492
19-1/2
/ 495
22-7/8
/ 581
24-1/2
/ 822
Fig. 2 - Dimensional
editions
In Canada,
refer to the current
of Canada
Installation
CAN/CSA-BI49.1
and .2 Natural Gas and Propane
Codes, and Canadian Electrical Code CSA C22.1
Recognize
of the National
safety information.
This is the safety-alert
Standards
symbol/_.
When you see this symbol on the unit and in instructions
manuals, be alert to the potential for personal iniury.
Understand
CAUTION.
DANGER
severe
which
or
the signal words
DANGER,
WARNING,
and
These words are used with the safety-alert
symbol.
identifies the most serious hazards which will result in
personal
iniury or death. WARNING
signifies hazards
could result in personal iniury or death. CAUTION
is
used to identify unsafe practices which may result in nfinor
personal iniury or product and property damage. NOTE is used
to highlight
suggestions
which
installation, reliability, or operation.
ENVIRONMENTAL
Failure to follow
polution.
Remove
refrigerant,
The 58MVC
result
in
enhanced
HAZARD
this caution
and recycle
control
will
all components
boards,
Condensing
may result
etc.) before
Gas-Fired
in environmental
or materials
(i.e., oil,
unit final disposal.
Furnaces
AGA and CGA) design-certified
for natural
(see furnace rating plate) and for installation
E
15-7/8
are CSA (formerly
and propane
in alcoves,
gases
attics,
16 / 406
23 / 584
Drawing
basements, closets, utility rooms, crawlspaces, and garages. The
furnace is factory-shipped for use with natural gas. A CSA listed
gas conversion kit is required to convert furnace for use with
propane gas.
See Fig. 3 for required clearances to combustibles.
Maintain a 1-in. (25 ram) clearance from combustible materials
to supply air ductwork for a distance of 36 inches (914 ram)
horizontally from the furnace. See NFPA 90B or local code for
further requirements.
These furnaces SHALL NOT be installed directly on carpeting,
tile, or any other combustible material other than wood flooring.
These furnaces are suitable for installation in a structure built on
site or a manufactured building completed at final site. The
design of this furnace line is NOT CSA design-certified for
installation in recreation vehicles, manufactured (mobile) homes
or outdoors.
This furnace is designed for continuous return-air minimum
temperature of 60 °F (16 ° C) db or internfittent operation down to
55°F
(13°C) db such as when used with a night setback
thermostat. Return-air temperature nmst not exceed 80 °F (27 °C)
db. Failure to follow these return air linfits may affect reliability
of heat exchangers, motors and controls. (See Fig. 4.)
These furnaces are shipped with the drain and pressure tubes
connected for UPFLOW applications. Minor modifications are
required when used in DOWNFLOW, HORIZONTAL RIGHT,
or HORIZONTAL
LEFT (supply-air
discharge direction)
applications as shown in Fig. 1. See details in Applications
section.
Install this furnace only in a location and position as specified in
LOCATION
and INSTALLATION
sections of these instructions.
Combustion
products
must be discharged
outdoors.
Connect
•
this
•
Never test for gas leaks with an open flame. Use a commercially
available soap solution made specifically
for detection of leaks to
Always
intended
as specified
in the GAS PIPING
section
furnace
furnace.
casing
and terminating
outside
the space
A gas-fired furnace for installation
in a residential
installed as specified in the Hazardous
Locations
instructions
the
must be
of these
may be used
for construction
This gas furnace
heat provided
may be used for construction
The furnace
is permanently
that the
complies
with
the
of these instructions.
installed
heat provided
first
that:
with all electrical
wiring, piping, air filters, venting and ducting installed
according to these installation instructions.
A return air
duct is provided, sealed to the furnace casing, and terminated outside the space containing the furnace. This
prevents a negative pressure condition
as created by the
circulating air blower, causing a flame rollout and/or
drawing combustion
products into the structure.
•
•
The furnace is controlled by a thermostat.
"hot wired" to provide heat continuously
ture without thermostatic control.
It may not be
to the struc-
Clean outside air is provided for combustion. This is to
minimize the corrosive effects of adhesives, sealers and
other construction materials. It also prevents the entrainment of drywall dust into combustion air, which
can cause fouling and plugging of furnace components.
The temperature of the return air to the furnace is maintained between 55°F (13°C) and 80°F (27°C), with no
evening setback or shutdown. The use of the furnace
while the structure is under construction is deemed to
be intermittent operation per our installation instructions.
prior to occupancy.
ductwork
and filters are cleaned
sary to remove drywall
from all HVAC system
as neces-
dust and construction
debris
components
after construction
is completed.
•
After construction
conditions
containing
garage
section
cleaned
The furnace,
is complete,
including
rise and venting,
structions.
ignition,
according
verify furnace
operating
input rate, temperature
to the manufacturer's
in-
If this furnace is installed with a direct-vent
(combustion
air and
flue) system, a factory accessory termination
kit must be installed.
In a direct-vent
system, all air for combustion
is taken directly
from the outside atmosphere
to the outside atmosphere.
termination
furnace
installation
and operation
CAUTION
in the LOCATION
section
•
•
in the SET
and Fig. 5.
The furnace
•
oughly
of
When a furnace
is installed
so that supply
ducts carry air
circulated by the furnace to areas outside the space containing the
furnace, the return air shall also be handled by ducts sealed to the
the rated rise range on
The filters used to clean the circulating air during the
construction
process must be either changed or thor-
install
the furnace
to operate
within
the furnace's
rise range with a duct system which has an external
static pressure within the allowable range as specified
TEMPERATURE
RISE section of these instructions.
rise is within
the furnace rating plate, and the firing rate has been set
to the nameplate value.
furnace to an approved
vent system only, as specified
in the
Combustion
Air and Vent piping sections of these instructions.
check all connections
these instructions.
The air temperature
These
kit instructions
furnaces
and all flue products are discharged
See furnace and factory accessory
for proper
are shipped
installation.
with the following
in proper furnace installation.
main blower compartment.
These
materials
materials
to assist
are shipped
in the
Installer Packet Includes:
Installation, Start-up,
and Operating
Instructions
Service and Maintenance Instructions
User's Information Manual
Warranty Certificate
Loose Parts Bag includes:
Quantity
Collector Box or Condensate
trap extension tube
1
Inducer housing drain tube
1
1/2-in
2
CPVC street elbow
Drain tube coupling
1
Drain tube coupling grommet
1
Gas line grommet
1
Vent pipe grommet
1
Combustion-air
1
pipe grommet
Gas line entry hole filler plug
1
Power entry hole filler plug
2
Condensate
3
trap hole filler plug
Vent and combustion-air
Combustion-air
intake hole filler plug
pipe perforated
disk assembly
2
1
INSTALLATION
e
•
•
•
e
e
®
e
•
•
g
This forced air fumace is equipped for use with natural gas at altitudes 0 - 10,000 ft (0 - 3,050m), except 140 size furnaces are only approved for altitudes 0 - 7,000 fL
(0 - 2,135m).
An accessory kit, supplied by the manufacturer,
shah be used to convert to propane gas use or may be Pequired for some natural gas applicetions.
This famace is for indoor installation in a building constructed
on site. This furnace may be instated in a manufactured
(mobile) home when stated on rating plate and
using factory authorized
kit..
This furnace may be instated on combustible
floodng in alsove or closet at Minimum
Inches Clearance
To Combustible
Construction
as described below.
This _mace
requires a special venting system.
Refer to the installation instructions for parts list and method of installation. In the US this furnace is for use with
schedule=40
PVC, PVC-DWV,
CPVC, or AB,S-DWV pipe, and must not be vented in common with other gas-fired appliances.
In Canada, refer to installation instructions
for vent materials.
Construction
through which vent/air intake pipes may be installed is maximum
24 inches (610 ram), minimum 3/4 inches (19 mm) thickness (including
roofing materials).
Cette foumaise _ air puis6 est 6quip6e pour utilisation avec gaz naturem et altitudes comprises
entre 0 - 3,050m (0 - 10,000 pi),except6
queles foumaises
de 140 taifle
sont pour altitudes comprises entre 0 - 2,135m (0 - 7,000pi).
Utiiiser une trousse de conversion,
foumie par le fabdcant, pour passer au gaz propane ou pour certaines installations
au gaz natureL
Cette foumaise & air pulse est pour installation a I'intedeur dans un b_timent construit sur place. Cette foumaise a air pulse peut 6tre install6e dans une maison
prCfabdqu6e
(maison mobile) si prescrit par la plaque signal6tique et si'l on utilise une trousse specifi6e par le fabrleant.
C.ette foumaise
pout 6tre install6e sur un plancher combustible
dans un enfoncement
ou un placerd en observant
les D6gagernent
Minimum
En Pouces Avec
EI6ments
De Construction
Combustibles.
Cette foumaise
n6cessite un syst_me d'6vacuation
sp6cial. La m6thode
d'instaliation
et la iiste des pi_ces n6cessaires
figurent dana les instructions
d"installation.
Aux
Etats-Unis, cette foumaise
dolt s'utiliser avec la tuyautede des nomenclatures
40 PVC, PVC-DWV,
CPVC, ou ,ABS-DWV
et elle ne peut pas _tre ventil6e conjointment
avec d'autres appareils & gaz. Au Canada, referer aux instructions
d'installation
pour lax matedaux a ventiler. Epaisseur
de la construction
au travers de laquene il est
possible de faire passer les tuyaux d'aeration (admission/evacuation):
24 po (610 mm) maximum,
3/4 pc (19mm) minimum
(y compds la toiture).
For up&3w and downflow
applications,
furnace
must be installed level, or pitched within 1/2" (12.7ram) of level. For a
horizonfal application, the furnace must be pitched minimum 1/4" (6.35mm) to maximum of 1/Z' (12.7mm) forward
proper drainage. See Installation Manual for IMPORTANT
unit support details on horizontal applications.
for
Pour des applications de flux ascendant et descendant, la foumaise doit ¢¢e install6e de niveau ou indin6e _
pas plus de 1/2" (12.7mm) du niveau. Pour une application hodzontale, la fOumaise dOlt &'Ire inclle_-_eenli'e minimum
LEVEL 0" ( 0 ) TO
_,.
1/2" (12.7mm) MAXj
¢_L-_-_
T
UPFLOW
1/4" (6.35mm) et maximum 1/2" (12.7ram) du niveau pour le drainage appropn&
En cas d'installation en position
hodzootale, consulter les renseignements
mMPORTANTS sur le support dans le manuel d'instaHation.
DOWN
OR
MINI
14" (6.35mm) TO
1/2" (12.7mm)MAX
............. !
F_ORON_ )
FLOW
HORIZONTAL
MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION
This furnace is approved for UPFLOW, DOWNFLOW and
HORIZONTAL installations.
ALL POSiTiONS:
*
Minimum
front clearance
t 1 140 size furnaces
DOWNFLOW POSITIONS:
t
for service
require
I inch back
For installation on combustible
NAHA01101SB,
CoilAssembly,
or WENC or WTNC.
HORIZONTAL
24 inches
(610mm).
clearance
11oors only when
Part No. CAR,
to combustible
Cette foumaise est approuv_e pour I'installation HORIZONTALE
et la circulation d'air VERS LE HAUT et VERS LE BAS.
materials.
instated on special base No. KGASB0201ALL
or
CAP, CNPV, CNRV or Coil Casing, Part No. KCAKC,
Clearance
furnace orientation,
POSITIONSi
Line contact
furnace
is permissible
jacket,
only between
and building
§
Clearance
shown
O
120 and
140 size
arrows
do not change with
joists,
studs,
lines formed
require
of top
and two
sides
de degagement
ne change pas avec
I'orientation de la
gen#rateur d'air chaud.
of
or framing.
is for air inlet and air ou_et
furnaces
by intersections
Les _hes
ends.
1 inch bottom
clearance
to combustible
materials.
DEGAGEMENT MINfl_UIVIEN POUCESAVEC I_LleMENTSDE CONSTRUCTION COMBUSTIBLES
POUR TOUS LES POSITIONS:
1- t
D@jagement
avant minimum
de 24 po (610mm ) pour l'entretien.
Pour les foumaises
de 140 taifle, 1 pc (25mm) d6gagement
des mat6riaux
requis au-arriere.
POUR LA POSITION COURANT
1
est
DESCENDANT:
Pour Ilnstaflation sur le plancher combustible
seulement
quand on utilise la base sp_ciale, piece
n° KGASB0201ALL
ou NAHA01101SB,
I'ensemble
serpentin,
pi_:e n ° CAR, CAP, CNPV, CNRV,
le carter de serpentin,
piece
POUR LA POSmON HORIZONTALE:
Le contact
deuxottes
batiment.
§
combustibles
n ° KCAKC
ou WENC
n'est permis qQentre les lignes form6es
par les intersec_ons
de la chemise de la foumaise,
et des solives, des montants
du dessus et des
ou de la charpente
du
La distance indiqu_e conceme
I'extr_mit6 du tuyau d'ardv_e
d'air et I'extr_mit_ du tuyau de sortie
d'aic
Pour les foumaises
de 120 et 140 taifie, 1 pc (25mm) d6gagement
des materiaux
combustibles
est requis
ou
ou WTNC.
Vent dearance
to
combustibles 0".
Clearancein inches
D6gagement(pc).
0 (pc) D_Jagement
d'_vent aveccombustibles.
au-dessous.
A08435
Fig. 3 - Clearances
to Combustibles
o
!
MAX80°F/27C
_
MIN60°F
FRONT
/ 16 C
18-IN. (457.2 mm)
MINIMUM TO BURNERS
A06745
Fig. 4 - Return-Air
Temperature
A93044
Fig. 5 - Installation
in a Garage
Thefurnace
shallbeinstalled
sothat the
protected
For accessory
literature.
installation
CODES
Follow
electrical
components
are
•
When flexible connectors are used, the maximum
length shall not exceed 36 inches (914 ram).
•
When lever type gas shutoffs are used they shall be
T-handle type.
from water.
all national
details,
AND
refer to applicable
installation
STANDARDS
and local codes
•
and standards
in addition
to these
regulations
instructions.
The installation
must comply
with
of the serving gas supplier,
local building,
heating,
plumbing,
installation
and other codes. In absence
of local codes,
must comply with the national codes listed below
all authorities
having
jurisdiction
In the United
States
and Canada,
the
and
in Canada.
follow
all codes
and standards
for the following:
US: National Fuel Gas Code (NFGC) NFPA
54-2006/ANSI Z223.1-2006 and the Installation
Standards, Warm Air Heating and Air Conditioning
Systems ANSI/NFPA 90B
General
US: NFGC and the NFPA 90B. For copies, contact the
National Fire Protection Association
Inc., Batterymarch
Park, Quincy, MA 02269; or for only the NFGC contact the American Gas Association,
400 N. Capitol,
N.W, Washington
•
A manufactured
DC 20001.
(Mobile)
home installation
for ManufacHome Suites,
Communities,
and Set-Ups),
ANSI/NCS A225.1,
or CAN/CSA-z240,
MH Series Mobile Homes.
•
Combustion
Etobicoke
(Toronto),
Ontario,
•
CANADA:
M9W
DAMAGE
Air
Z223.1-2006,
Air for
•
CANADA:
Part 8 of the CAN/CSA-B149.1-05,
Vent-
Electrostatic discharge can affect electronic components.
Take precautions during furnace installation and servicing
to protect the furnace electronic control. Precautions will
prevent electrostatic discharges from personnel and hand
tools which are held during the procedure. These
precautions will help to avoid exposing the control to
electrostatic discharge by putting the furnace, the control,
and the person at the same electrostatic potential.
3. Disconnect
all power to the furnace. Multiple disconnects
may be required. DO NOT TOUCH THE CONTROL
OR
ANY WIRE CONNECTED
TO THE CONTROL
PRIOR
ing Systems
and Air Supply
for Appliances.
Contractors
As-
or American
Society
of Heating,
and Fibrous
US and CANADA:
current
edition
•
and Gas Pipe Pressure
US: Section
chapters
•
CAN/CSA-BI49.1-05
This product
gas fitter.
must be installed
you may proceed
dis-
removing
to service
the
that
static electricity
(for example;
your feet, DO NOT touch un-
etc.).
objects
(recharge
touch furnace
for installed
a new
and uninstalled
control
charge your body's electrostatic
tect the control from damage.
your body
again before
from
with
touch-
(ungroun-
its container,
dis-
charge to ground to proIf the control is to be in-
ungrounded
objects.
9. An ESD service kit (available from commercial
may also be used to prevent ESD damage.
sources)
INTRODUCTION
plumbing
NFGC;
codes.
Parts 4, 5, 6, and 9.
In the state of Massachusetts:
•
objects,
fore touching
181 for Class I
Z223A-2006
5, 6, 7, and 8 and national
CANADA:
of SMACNA,
Testing
9.3 NFPA 54/ANSI
will be satisfactorily
stalled in a furnace, follow items 1 through
5 before
bringing the control or yourself into contact with the furnace. Put all used AND new controls into containers be-
Glass Duct
NFPA 90B as tested by UL Standard
Rigid Air Ducts.
BODY'S
wires as long as you do nothing
6. If you touch ungrounded
8. Before
Refriger-
ation, and Air Conditioning
Engineers (ASHRAE)
2005 Fundamentals
Handbook
Chapter 35.
Lining
YOUR
TO GROUND.
grounding
the chassis,
or connecting
7. Use this procedure
ded) furnaces.
sociation (ACCA) Manual D, Sheet Metal and Air
Conditioning
Contractors
National Association
Gas Piping
during
static electricity), firmly
ing control or wires.
Duct Systems
•
hand
recharges your body with
DO NOT move or shuffle
grounded
(SMACNA),
g
Failure to follow this caution may result in damage to unit
components.
control
Air Conditioning
(ESD)
charged.
9.3 NFPA 54/ANSI
and Ventilation.
US and CANADA:
Code CSA C22.1.
HAZARD
5. After touching
and Ventilation
Electrical
ANSI/NFPA
ELECTROSTATIC
DISCHARGE
PRECAUTIONS
person's
1R3,
US: Section
Combustion
Acoustical
Canadian
Code (NEC)
4. Firmly touch a clean, unpainted,
metal surface of the furnace chassis which is close to the control. Tools held in a
•
•
Electrical
TO
DISCHARGING
ELECTROSTATIC
CHARGE
and/
CANADA:
CAN/CSA-B149.1-05.
For a copy, contact Standard Sales, CSA International,
178 Rexdale
Boulevard,
Canada.
US: National
70-2008.
nmst con-
form with the Manufactured
Home Construction
and
Safi, ty Standard,
Title 24 CFR, Part 3280, or when this
standard is not applicable, the Standard
tured Home Installation
(Manufactured
•
[]NIT
CANADA: National Standard of Canada, Natural Gas
and Propane Installation Code (CAN/CSAB149.1-05) CSA B149.1-05
Installation
•
The use of copper tubing for gas piping is not approved
by the state of Massachusetts.
Electrical Connections
by a licensed
plumber
or
The model 58MVC Direct Vent, Upflow, Gas-Fired,
IV, condensing
furnace is available in model sizes
input capacities
of 60,000
to 120,000
Btuh.
Category
ranging
in
APPLICATIONS
General
Some assembly and modifications are required for furnaces
installed in any of the four applications shown in Fig. 1. All
drain and pressure tubes are connected as shown in Fig. 7. See
appropriate application instructions for these procedures.
PROPERTY
DAMAGE
Failure to follow
damage.
HAZARD
this caution
may result
in property
Local codes may require a drain pan under entire furnace
and condensate trap when a condensing furnace is used in
an attic application or over a finished ceiling.
current
localbe codes.
NOTE: CAN/CSA-B149.1-05
In Canada, installationsand/orshall
in accordance
UPFLOW
APPLICATION
An upflow furnace
below
combustion
g. Remove and discard casing drain hole plug button from
desired side.
Orientation)
is factory installed in the blower shelf and
UPFLOW
applications,
A factory-supplied
the condensate
trap drain connection
to the
for field drain attachment.
See Condensate
j. Cement 2 factory-supplied 1/2-in. (13 mm) street CPVC
elbows to rigid drain tube connection on condensate trap.
(See Fig. 7.) These elbows must be cemented together
and cemented to condensate trap drain connection.
air is discharged
Condensate
Trap
upwards.
(Factory-Shipped
The condensate
trap
factory connected
for
tube is used to extend
desired furnace side
f. Determine location of field drain connection, (See Fig.
2 or 7.)
NOTE: If internal filter or side filter/media cabinet is used, drain
tube should be located to opposite side of casing from return duct
attachment to assist in filter removal.
h. Install drain tube coupling grommet (factory-supplied in
loose parts bag) in selected casing hole.
i. Slide drain tube coupling (factory-supplied in loose parts
bag) through grommet so long end of coupling faces
blower.
application
is where furnace blower is located
and
controls
section
of furnace,
and
conditioned
Trap Tubing
section
Condensate
Trap Tubing
NOTE:
confirm
with
1. Collector Box Drain, Inducer Housing Drain, Relief Port,
and Pressure Switch Tubes.
These tubes should be factory attached to condensate trap
and pressure switch ready for use in UPFLOW applications. These tubes can be identified by their connection
location and also by a color label on each tube. These
tubes are identified as follows: collector box drain tube
(blue label), inducer housing drain tube (violet label or
molded), relief port tube (green label), and pressure switch
tube (pink label).
2, Condensate Trap Drain Tube
The condensate trap drain connection must be extended
for field attachment by doing the following:
for drain tube extension
(Factory-Shipped
See Fig. 7 or tube routing
location of these tubes.
details, (See Fig. 6.)
Orientation)
label on main furnace
door to
m BLOWER SHELF
&-- FURNACE
DOOR
\
f_
CONDENSATE
/
TRA;uRNACE
j
FURNACE
DOOR
-7
FURNACE
SIDE
SIDe,,,"
!
,:_3
_'/
......
/I
47/8(124mm)
21 J
4
(102mm)
l iie
4(146mm)
(102ram'
%2972 /4
/_ _TERNATE
FIELD ,..._ 261/4
DRAIN
(667mm)
CONN
DRAIN
/2
(38mm)
FIELD
DRAIN
CONN
3/4
(19ram)
(667mm)
TUBE LOCATION
SIDE VIEW
CONDENSATE TRAP -DRAIN TUBE LOCATION
END VIEW
FRONT VIEW
HORIZONTAL
APPLICATIONS
DOWNFLOW AND ALTERNATE
EXTERNAL UPFLOW APPLICATIONS
UPFLOW APPLICATIONS
SLOT FOR SCREW --j
HORIZONTAL /
APPLICATION
FRONT Vl EW
1/40D
COLLECTOR BOX TO
TRAP RELIEF PORT
(OPTIONAL) /
11/2 (88mm)]
Uq --- ;
1/20D
INDUCER HOUSING
DRAIN CONNECTION
5/80D
COLLECTOR BOX
DRAIN CONNECTION
SCREW HOLE FOR
UPFLOW OR DOWNFLOW APPLICATIONS
(OPTIONAL)
GUIDES
-(WHEN USED)
_1
,!
1/2 IN. PVC OR CPVC
(57mm)
FRONT VIEW
SIDE VIEW
A07459
Fig. 6 - Condensate
NOTE:
Failure
preventing
to use CPVC
elbows
may allow
drain to kink,
draining.
k. Connect larger diameter drain tube and clamp (factorysupplied in loose parts bag) to condensate trap and clamp
securely.
1. Route
tube to coupling
and cut to appropriate
m. Attach
tube to coupling
and clamp securely.
Condensate
Trap
An alternate
of casing.
NOTE:
the
Trap
(Alternate
location
Upflow
length.
Orientation)
for the condensate
trap is the left-hand
side
(See Fig. 2 and 8.)
If the alternate
factory-connected
disconnected
drain
and modified
Tubing
(Alternate
attachment.
To relocate
left-hand
relief
for attachment.
Upflow
condensate
side of casing
and
port
location
tubes
section
for
Failure to follow
iniury or death.
be
4. Install
to the left-hand
tubing
side, perform
to condensate
2. Remove trap from blower
ward and rotating trap.
shelf by gently
3. Install
cap
casing
condensate
hole
filler
parts bag) into blower
(factory-supplied
result
in personal
hole by inhole and ro-
tabs inin loose
shelf hole where trap was removed.
NOTE:
confirm
trap
condensate
caps (factory-supplied
the
trap.
pushing
could
casing
Condensate
three tubes connected
this warning
HAZARD
serting tube connection
stubs through casing
tating until tabs snap into locking position.
5. Fill unused
trap
POISONING
Casing hole filler cap must be installed in blower shelf
hole when
condensate
trap is relocated
to prevent
combustion
products being drawn in from appliances in
the equipment room.
Trap
following:
1. Remove
MONOXIDE
is used,
must
See Condensate
Orientation)
CARBON
Trap 3klbing
into left-hand
trap casing
holes
with plastic filler
in loose parts bag).
(Alternate
See Fig. 8 or tube routing
location of these tubes.
Uptlow
Orientation)
label on main furnace
door to
PLUG
COLLECTOR BOX
DRAIN TUBE (BLUE &
WHITE STRIPED)
PLUG
CAP
COLLECTOR BOX
DRAIN TUBE (BLUE &
WHITE STRIPED)
COLLECTOR BOX
TUBE (PINK)
CAP
INDUCER HOUSING
(MOLDED) DRAIN
TUBE (BEHIND
COLLECTOR BOX
DRAIN TUBE)
COLLECTOR BOX
TUBE (PINK)
COLLECTOR BOX
DRAIN TUBE (BLUE)
COLLECTOR BOX
TUBE (GREEN
ROUTES BEHIND
INDUCER)
COLLECTOR BOX
DRAIN TUBE (BLUE)
COLLECTOR BOX
CONDENSATE
TRAP
TUBE (GREEN)
_
CONDENSATE
TRAP
FIELD-INSTALLED
FACTORY-SUPPLIED
DRAIN TUBE
COUPLING (LEFT
DRAIN OPTION)
INDUCER HOUSING
(MOLDED) DRAIN
TUBE (VIOLET)
FIELD-INSTALLED
FACTORY-SUPPLIED
DRAIN TUBE
FIELD-INSTALLED
FACTORY-SUPPLIED
DRAIN TUBE
COUPLING (LEFT
DRAIN OPTION)
FIELD-INSTALLED
FACTORY-SUPPLIED
1/2- IN. CPVC STREET
ELBOWS (2) FOR
LEFT DRAIN OPTION
A07274
Fig. 7 - Factory-Shipped
(Shown with Blower Access
A07281
Trap Location
Panel Removed)
Fig. 8 - Alternate
Pressure
1. Collector
Box Drain Tube
Connect
collector
box drain tube (blue label)
On 17-1/2-in.
(445 ram) wide furnaces
corrugated sections to prevent kinks.
2. Inducer
Housing
Drain
to condens-
ONLY, cut tube
NOTE:
Tube
trap.
See Fig. 7 or 8 or tube routing
Box and Inducer
Upper
Box Drain
Collector
factory-installed
ate trap.
appropriate length, then cut and connect tube.
tube to prevent
any condensate
to the
leakage.
label
on main
furnace
connections.
Upper Collector
Connections
Attached
b. Use inducer housing drain extension tube (violet label
and factory-supplied
in loose parts bag) to connect
LOWER inducer housing drain connection to condens-
d. Clamp
Tubing
door to check for proper
a. Remove and discard LOWER (molded) inducer housing
drain tube which was previously connected to condensate
c. Deternfine
Location
The LOWER collector box pressure tube (pink label) is factory
connected
to the pressure
switch and should not require any
modification.
ate trap.
NOTE:
between
Switch
Trap
UPPER
Housing
(Unused)
Drain
Connection
collector
corrugated,
box
plugged
drain
tube
connection
(blue
and
is a
white
striped label). This tube is plugged to prevent condensate
in this application.
Ensure this tube is plugged.
leakage
NOTE:
furnace
See Fig. 7 or 8 or tube routing
door to check for proper
connections.
Upper
Drain
Inducer
Housing
label
on main
Connection
3. Relief Port Tube
a. Connect
b. Extend
relief port tube (green
this tube (if required)
er tube (factory-supplied
c. Deternfine
Condensate
Refer
trap.
to small diamet-
in loose parts bag).
Drain
Drain
NOTE:
for recommendations
See Fig. 7 or 8 or tube routing
door to check for proper
Attachment
section
to the UPPER
(unused)
inducer
housing
drain
is a cap and clamp. This cap is used to prevent
leakage in this application.
Ensure this connection
is
capped.
appropriate length, then cut and connect tube.
Trap Field
to Condensate
label) to condensate
by splicing
Attached
connection
condensate
and
Condensate
procedures.
Refer
Trap Freeze
Protection
Condensate
Drain
to
recommendations
10
label
on main
furnace
connections.
and procedures.
Protection
section
for
COLLECTORBOX
DRAIN TUBE(BLUE)
PLUG
=
COLLECTOR
BOX
TUBE (GREEN)
CAP
CAP
COLLECTOR
COLLECTORBOX
TUBE(GREEN)
BOX
DRAIN TUBE (BLUE)
COLLECTOR BOX
S
TUBE (PINK)
PLUG
F
COLLECTOR
COLLECTOR
BOX
TUBE(PINK)
BOX
DRAIN TUBE (BLUE &
DRAIN TUBE(BLUE&
WHITESTRIPED)
WHITE STRIPED)
COLLECTOR
COLLECTORBOX
COLLECTORBOX
BOX
TUBE EXTENSION
_
--
INDUCER
HOUSING
(MOLDED)
DRAIN
TUBE (VIOLET)
TUBE EXTENS,ON
_i i_
_
CONDENSATE
TRAP
CONDENSATETRAP
__q
/
•
INDUCERHOUSING
(MOLDED)DRAIN
TUBE(VIOLET)
.
_
Z
•
COLLECTOR
BOX
EXTENSION
DRAIN TUBE
DRAIN TUBE
COUPLING
A07276
A07277
Fig. 9 - Downflow Tube Configuration
(Left-hand Trap Installation)
Fig. 10 - Downflow
(Right-Hand
DOWNFLOW APPLICATIONS
Condensate
A downflow
furnace
application
is where furnace blower
is
located above combustion
and controls section of furnace, and
NOTE:
conditioned
air is discharged
Condensate
Trap Location
The condensate
blower
location
trap must be removed
shelf location
and relocated
as shown in Fig. 2, 9, or 10.
To relocate condensate
trap from
location, perform the following:
1. Remove
three tubes connected
2. Remove trap from blower
ward and rotating trap.
3. Remove
casing
in
selected
the blower
application
shelf
shelf by gently
a. Remove factory-installed
plug from LOWER
box drain tube (blue and white striped label).
collector
b. Install
collector
removed
trap.
densate
tabs in-
LOWER
hole.
(See Fig.
Failure to follow
iniury or death.
this warning
(b.)Clamp
result
tube to prevent
Trap Located
drain
(b.) Connect
in personal
to con-
on Left Side of Casing
collector
box drain tube (blue
condensate
any condensate
tube coupling
larger diameter
trap.
leakage.
on Right Side of Casing
(factory-supplied
loose parts bag) into collector
box
(blue and white striped label) which
ously plugged.
HAZARD
could
LOWER
(4.) Condensate
(a.)Install
POISONING
to con-
box drain connection
and white striped
label) to
Tube does not need to be cut.
4. Install casing hole filler cap (factory-supplied
in loose
parts bag) into blower shelf hole where trap was removed.
MONOXIDE
collector
Trap Located
(a.)Connect
hole filler cap from casing
and plug into UPPER
trap.
(3.) Condensate
2 and 10.)
CARBON
clamp
box drain tube (blue label) which was connected
densate trap.
to desired
pushing
label on main furnace
connections.
Box Drain Tube
c. Connect
to condensate
Configuration)
Trap Tubing
1. Collector
from the factory-installed
Trap
See Fig. 9 or 10 or tube routing
door to check for proper
downwards.
Tube Configuration
drain tube (factory-sup-
plied in loose parts bag) to drain tube coupling,
extending
collector box drain tube for connection to condensate trap.
Casing hole filler cap must be installed in blower shelf hole
when condensate
trap is relocated to prevent
combustion
products being drawn in from appliances in the equipment
room.
(c.)Route
extended
collector
box
between gas valve and inlet housing
drain
tube
as shown in
Fig. 10.
(d.)Determine
5. Install
condensate
trap into left-hand
side casing
inserting
tube connection
stubs through casing
rotating until tabs snap into locking position.
6. Fill unused
condensate
caps (factory-supplied
trap casing
holes
in
drain tube
was previ-
(e.)Connect
hole by
2. Inducer
hole and
Housing
appropriate
to condensate
Drain
length
and cut.
trap.
Tube
a. Remove factory-installed
cap and clamp from LOWER
inducer housing drain connection.
with plastic filler
in loose parts bag).
11
PLUG
AUXILIARY
CAP
"J" BOX
COLLECTOR BOX
DRAIN TUBE (BLUE &
WHITE STRIPED)
CONDENSATE
TRAP
COLLECTOR BOX
TUBE (GREEN)
INDUCER HOUSING
COLLECTOR BOX
TUBE EXTENSION
(MOLDED) DRAIN
TUBE (VIOLET)
COLLECTOR BOX
COLLECTOR BOX
DRAIN TUBE (BLUE)
EXTENSION
DRAIN TUBE
COLLECTOR BOX
DRAIN TUBE
COUPLING
TUBE (PINK)
A07278
Fig. 11 - Horizontal
Left Tube Configuration
b. Remove and discard UPPER (molded) inducer housing
drain tube which was previously connected to condensate
trap.
MUST
c. Install cap and clamp on UPPER inducer housing drain
connection where molded drain tube was removed.
connection
MUST
be connected
to the pressure
DOWNFLOW
or HORIZONTAL
RIGHT applications.
d. Use inducer housing drain tube (violet label and factorysupplied in loose parts bag) to connect LOWER inducer
housing drain connection to the condensate trap,
e. Connect inducer housing drain connection to condensate
trap.
NOTE:
and used
or the condensate
See Fig. 9 or 10 or tube routing
Relocate
trap
relief
The other collector box pressure tube (green label)
factory connected
to the condensate
trap relief port
door to check for proper
switch
in
label on man furnace
connections.
tubes as described
below.
1. Disconnect
collector
box
tached to pressure switch.
(1.) Condensate Trap Located on Left Side of Casing
pressure
tube
(pink
label)
at-
2. Extend collector
box pressure tube (green label) which
was previously
connected
to condensate
trap relief port
(a.)Determine appropriate length and cut.
(b.)connect tube to condensate trap.
connection
by splicing
to small diameter
supplied in loose parts bag).
(c.)Clamp tube to prevent any condensate leakage.
tube (factory-
3. Connect collector box pressure tube (green label) to pressure switch connection
labeled COLLECTOR
BOX.
(2.) Condensate Trap Located on Right Side of Casing
(a.)Route inducer housing drain tube (violet label)
directly from inducer housing to condensate
trap.
4. Extend collector box pressure tube (pink label) which was
previously
connected to pressure switch by splicing to remaining
small
parts bag).
(b.)Determine appropriate length and cut.
(c.)Connect tube to condensate trap.
diameter
5. Route this extended
relief port connection.
(d.)Clamp tube to prevent any condensate leakage,
3. Relief Port Tube
Refer to Pressure Switch Tubing section for connection
procedure,
Condensate Trap Field Drain Attachment
Refer to Condensate Drain section for recommendations
procedures.
be disconnected
port tube,
which was
6. Determine
7. Clamp
Condensate
Refer
and
appropriate
tube
(factory-supplied
tube (pink
length,
label)
in loose
to condensate
cut, and connect
trap
tube.
tube to relief port connection.
Trap Freeze
to
recommendations
HORIZONTAL
Condensate
Protection
Drain
Protection
section
for
and procedures.
LEFT
(SUPPLY-AIR
DISCHARGE)
Pressure Switch Tubing
APPLICATIONS
One collector box pressure tube (pink label) is factory connected
to the pressure switch for use when furnace is installed in
UPFLOW or HORIZONTAL LEFT applications. The tube
A horizontal
left furnace application
is where furnace blower is
located to the right of combustion
and controls section of furnace,
and conditioned
12
air is discharged
to the left,
COMBUSTION INTAKE
A 12qN. (305 mm) MIN HORIZONTAL PIPE
SECTION IS RECOMMENDED
WITH
(5 TO 8 FT/1.5 TO 2.4 M) VENT
SYSTEMS TO REDUCE EXCESSIVE
CONDENSATE DROPLETS FROM
EXITING THE VENT PIPE.
30" (762 mm)MIN
)RK AREA
(I46 mm)
g
MAN1
SHUTOFF
GAS VALVE
ACCESS OPENING
FOR TRAP
SEDIMENT
TRAP
DRAIN
CONDENSATE
TRAP
NOTE: LOCAL CODES MAY REQUIRE A DRAIN PAN UNDER THE
FURNACE AND CONDENSATE TRAP WHEN A CONDENSING
FURNACE IS INSTALLED ABOVE FINISHED CEILINGS.
A93031
Fig. 12 - Attic
Location
and Working
Platform
for Direct Vent
(2-Pipe)
Application
A 3-IN (76mm) MINIMUM CLEARANCE
TO COMBUSTION-AIR
INTAKE
IS REQUIRED.
COMBUSTI{
INTAKE
A 12-IN. (305mm) MIN HORIZONTAL
PIPE
SECTION IS RECOMMENDED
WITH
SHORT (5 TO 8 FT / 1.5 TQ 2AM) VENT
SYSTEMS TO REDUCE EXCESSIVE
CONDENSATE
DROPLETS
FROM
EXITING THE VENT PIPE.
30qN. (762mm)
WORK AREA
MIN
(146mm)
MAN[
SHUTOFF
GAS VALVE
ACCESS OPENING
FOR TRAP
DRAIN
SEDIMENT
TRAP
CONDENSATE
TRAP
NOTE: LOCAL CODES MAY REQUIRE A DRAIN PAN UNDER THE
FURNACE AND CONDENSATE TRAP WHEN A CONDENSING
FURNACE IS INSTALLED ABOVE FINISHED CEILINGS.
A96184
Fig. 13 - Attic
Ventilated
Location
and Working
Combustion
Platform
Air Applications
13
for
connect LOWER inducer housing drain connection to condensate trap.
PROPERTY
Failure
damage.
(c.)Deternfine
tube.
DAMAGE
to
follow
this
caution
may
result
appropriate length, cut and connect
(d.)Clamp tube to prevent any condensate leakage.
3. Relief Port Tube
in property
a. Extend collector box tube (green label) which was previously connected to condensate trap by splicing to small
diameter tube (factory-supplied in loose parts bag).
Local codes may require a drain pan under entire furnace
and condensate
trap when a condensing
furnace is used in
an attic application
or over a finished ceiling.
b. Route extended collector box pressure tube to relief port
connection on condensate trap.
NOTE:
In Canada, installations shall be in accordance
current NSCNGPIC and/or local codes.
Condensate
with
c. Deternfine appropriate length, cut, and connect tube.
d. Clamp tube to prevent any condensate leakage.
Trap Location
Condensate Trap Field Drain Attachment
Refer to Condensate Drain section for recommendations
procedures.
The condensate trap nmst be removed from the factory-installed
blower shelf location and relocated in selected application
location as shown in Fig. 2 or 11.
To relocate condensate trap from the blower shelf to desired
location, perform the following:
1. Remove three tubes connected to condensate trap.
g
and
Pressure Switch Tubing
The LOWER collector box pressure tube (pink label) is factory
connected to the High Pressure Switch for use when furnace is
installed in UPFLOW applications.
This tube MUST be
disconnected, extended rerouted, and then reconnected to the
pressure switch in HORIZONTAL LEFT applications for 060
and 080 heating input furnaces.
2. Remove trap from blower shelf by gently pushing tabs inward and rotating trap.
3. Remove casing hole filler cap from casing hole. (See Fig.
2 or 11.)
NOTE: See Fig. 11 or tube routing label on main furnace door
to check for proper connections.
4. Install casing hole filler cap (factory-supplied in loose
parts bag) into blower shelf hole where trap was removed.
Modify tube as described below.
1. Disconnect collector box pressure tube (pink label) attached to High Pressure Switch.
CARBON
MONOXIDE
Failure to follow
injury or death.
POISONING
this warning
2. Use smaller diameter tube (factory-supplied in loose parts
bag) to extend tube disconnected in Item 1.
3. Route extended tube:
HAZARD
could result in personal
a. Behind inducer housing.
Casing hole filler cap must be installed in blower shelf hole
when condensate trap is relocated to prevent combustion
products being drawn in from appliances in the equipment
room.
5, Install
condensate
trap into left-hand
side casing
inserting
tube connection
stubs through casing
rotating until tabs snap into locking position.
6. Fill unused
condensate
trap casing
caps (factory-supplied
Condensate
NOTE:
holes
b. Between blower shelf and inducer housing.
4. Deternfine appropriate length, cut, and reconnect tube to
High Pressure Switch connections labeled COLLECTOR
BOX.
Condensate Trap Freeze Protection
Refer
to
Condensate
Drain
Protection
recommendations and procedures.
hole by
hole and
Construct
with plastic filler
in loose parts bag).
See Fig. 11 or tube routing
1. Collector
for
a Working Platform
Construct working platform where all required furnace clearances
are met, (See Fig. 3 and 12 or 13 0
Trap _bing
to check for proper
section
label on main
furnace
door
connections.
Box Drain Tube
a. Install
drain
tube coupling
(factory-supplied
[]NIT
in loose
OPERATION
HAZARD
parts bag) into collector box drain tube (blue label) which
was previously connected to condensate trap.
Failure to follow this caution may result in internfittent unit
operation.
b. Connect large diameter drain tube and clamp (factorysupplied in loose parts bag) to drain tube coupling, extending collector box drain tube.
The condensate trap MUST be installed below furnace. See
Fig. 6 for dimensions. The drain connection to condensate
trap must also be properly sloped to an open drain.
c. Route extended tube (blue label) to condensate
cut to appropriate length.
d. Clamp
2. Inducer
tube to prevent
Housing
Drain
any condensate
trap and
NOTE:
leakage.
systems.
Tube
droplets
(a.)Remove
and discard LOWER (molded) inducer
housing drain tube which was previously
connected to condensate
trap.
(b.)Use
inducer
housing
drain extension
label and factory-supplied
A 12-in.
recommended
tube (violet
in loose parts bag) to
14
with
(305
short
ram)
This recommendation
from exiting
nfininmm
offset
(5 to 8 ft. or 1.5M
is to reduce
the vent pipe.
pipe
section
to 2.4M)
excessive
condensate
(See Fig. 12, 13, or 44.)
is
vent
HORIZONTAL
RIGHT
(SUPPLY-AIR
DISCHARGE)
3. Install casing hole filler cap (factory-supplied in loose
parts bag) into blower shelf hole where trap was removed.
4. Install condensate trap into right-hand side casing hole by
inserting tube connection tabs through casing hole and rotating until tabs snap into locking position.
5. Fill unused condensate trap casing holes with plastic filler
caps (factory-supplied in loose parts bag).
APPLICATIONS
A horizontal
right furnace application is where furnace blower is
located to the left of combustion
and controls section of furnace,
and conditioned
air is discharged
to the right.
PROPERTY
Failure
damage.
DAMAGE
to
follow
HAZARD
this
caution
may
result
in property
Local codes may require a drain pan under entire furnace
and condensate
trap when a condensing
furnace is used in
an attic application
or over a finished ceiling.
MIN I/4" (7[l_Lm _
TO 1/2" (13mm)
MAX
HORIZONTAL
UPFLOW OR DOWNFLOW
NOTE:
In Canada, installations shall be in accordance
current NSCNGPIC and/or local codes.
with
A02146
Fig. 15 - Proper
NOTE: The auxiliary junction box (J-box) MUST be relocated
to opposite side of furnace casing. (See Fig. 14.) See Electrical
Connection section for J-box relocation.
Condensate
Condensate
1. Collector
PLUG
COLLECTOR
BOX
COLLECTOR
furnace
"J" BOX
factory-installed
plug from LOWER
box drain tube (blue and white striped
BOX TUBE (PINK)
RELOCATED
b. Install
HERE
removed
clamp
collector
label).
and plug into UPPER
collector
box drain tube (blue label) which was previously
ted to condensate
trap.
c. Connect
LOWER
collector
white striped label)
need to be cut.
d. Clamp
2. Inducer
COLLECTOR
BOX
DRAIN TUBE (BLUE &
WHITE STRIPED)
[J _
CONDENSATE
t]_]3
TRAP
box
drain
to condensate
trap.
tube to prevent
Housing
Drain
any condensate
connec-
tube
(blue
and
Tube does not
leakage.
Tube
(a.)Remove
LOWER
factory-installed
inducer housing
(b.)Remove
housing
and discard UPPER (molded) inducer
drain tube which was previously
con-
nected to condensate
INDUCER
door
Box Drain Tube
a. Remove
CAP
AUXILIARY
label on main
BOX
TUBE (GREEN)
COLLECTOR
Drainage
Trap Tubing
NOTE:
See Fig. 14 or tube routing
to check for proper connections.
Trap Location
DRAIN TUBE (BLUE)
Condensate
cap and clamp
drain connection.
from
trap.
HOUSING
(MOLDED)
(c.)Install
cap and clamp on UPPER inducer housing drain connection
where molded drain tube
was removed.
DRAIN
TUBE (VIOLET)
COLLECTOR
EXTENSION
BOX
TUBE
(d.)Use
A07279
Fig. 14 - Horizontal
Right
inducer
housing
drain extension
label and factory-supplied
connect LOWER inducer
tion to condensate trap.
1hbe Configuration
The condensate trap must be removed from the factory-installed
blower shelf location and relocated in selected application
location as shown in Fig. 2 or 14.
To relocate condensate trap from the blower shelf to desired
location, perform the following:
1. Remove three tubes connected to condensate trap.
(e.)Deternfine
appropriate
length,
tube to condensate
trap.
(f.)Clamp
tube (violet
in loose parts bag) to
housing drain conneccut, and connect
tube to prevent
any condensate
Switch
section
leakage.
3. Relief Port Tube
Refer to Pressure
Tubing
for recommenda-
tions and procedures.
2. Remove trap from blower shelf by gently pushing tabs inward and rotating trap.
Condenste
Refer
Trap
Field Drain
to Condensate
Drain
Attachment
section
for recommendations
and
procedures.
Pressure
CARBON
MONOXIDE
Failure to follow
injury or death.
POISONING
this warning
HAZARD
Switch
1hbing
One collector box pressure tube (pink label) is factory connected
to the pressure
switch for use when furnace is installed
in
UPFLOW
or HORIZONTAL
LEFT
applications.
This tube
could result in personal
MUST
Casing hole filler cap must be installed in blower shelf hole
when condensate trap is relocated to prevent combustion
products being drawn in from appliances in the equipment
room.
be disconnected
port tube,
which was
and used
connection
MUST
be connect
DOWNFLOW
or HORIZONTAL
15
for the condensate
trap
relief
The other collector box pressure tube (green label)
factory connected
to the condensate
trap relief port
to the pressure
switch
RIGHT applications,
in
NOTE:See
Fig.14ortuberouting
labelonmainfurnace
door
tocheck
forproper
connections.
Relocate
tubes
asdescribed
below.
1.Disconnect
collector
boxpressure
tube(pinklabel)attached
topressure
switch.
2.Extend
collector
boxpressure
tube(green
label)which
waspreviously
connected
tocondensate
trapreliefport
connection
bysplicing
tosmalldiameter
tube(factorysupplied
inloose
parts
bag.)
3.Connect
collector
boxpressure
tube(green
label)
topressure
switch
connection
labeled
COLLECTOR
BOX.
4.Useremaining
smalldiameter
tube(factory-supplied
in
loosepartsbag)toextend
collector
boxpressure
tube
(pinklabel)
whichwaspreviously
connected
topressure
switch.
5.Route
thisextended
tube(pinklabel)
tocondensate
trap
reliefportconnection.
6.Determine
appropriate
Length,
cut,andconnect
tube.
7.Clamp
tubetoreliefportconnection.
Condensate
Refer
Trap Freeze
to
recommendations
Construct
Construct
are met.
UNIT
Drain
Protection
section
a Working
for
Platform
platform
where all required
furnace
clearances
(See Fig. 3 and 12 or 13.)
OPERATION
Failure to follow
operation.
•
be located so combustion-air and vent pipe maximum
lengths are not exceeded. Refer to Table 7.
•
be located where available electric power and gas supplies meet specifications on the furnace rating plate.
•
be attached to an air distribution system and be located
as close to the center of the distribution system as possible. Refer to Air Ducts section.
•
be provided with ample space for servicing and cleaning. Always comply with minimum fire protection
clearances shown on the furnace clearance-to-combustibles label. (See Fig. 3.)
NOTE: For upflow/downflow applications install furnace so that
it is level or pitched and forward within 1/2-in. (13 ram) for
proper furnace operation.
For horizontal applications pitch
1/4-in. (6 mm) n_ininmm to 1/2-in. (13 mm) n_axinmm forward
to ensure proper condensate drainage from secondary heat
exchangers. (See Fig. 15.)
When a furnace is installed so that supply ducts carry air
circulated by the furnace to areas outside the space containing the
furnace, the return air shall also be handled by ducts sealed to
furnace casing. The ducts terminate outside the space containing
the furnace to ensure there will not be a negative pressure
condition within equipment room or space.
and procedures.
working
not be installed directly on any combustible material
other than wood flooring (refer to SAFETY
CONSIDERATIONS).
This furnace may be located in a confined space without special
provisions for dilution or ventilation air.
Protection
condensate
•
HAZARD
this caution
may result in intermittent
unit
The condensate
trap MUST be installed below furnace. See
Fig. 6 for dimensions.
The drain connection
to condensate
trap must also be properly sloped to an open drain.
NOTE:
A 12-in.
recommended
systems.
droplets
with
(305
short
ram)
This recommendation
from exiting
n_ininmm
offset
(5 to 8 ft. or 1.5M
is to reduce
the vent pipe.
pipe
section
to 2.4M)
excessive
is
vent
BACK
condensate
(See Fig. 12, 13, or 44.)
LOCATION
General
This furnace
•
nmst
be installed so the electrical
from water.
A93043
components
are protected
Fig. 16 - Prohibit
16
Installation
on Back
[]NIT
DAMAGE
This gas furnace
provided that:
HAZARD
may
UNIT
be
used
for
construction
DAMAGE
Failure to follow this caution may result in nfinor property
or unit damage.
heat
If these furnaces are installed in an unconditioned space
where ambient temperatures may be 32°F (0°C) or lower,
freeze protection measures must be taken. See Condensate
Drain Protection section and Fig. 17.
-The furnace is permanently
installed with all electrical
wiring,
piping, air filters, venting
and ducting
installed
according to these installation
instructions.
A return air duct
is provided,
sealed to the furnace casing, and ternfinated
outside the space containing
the furnace. This prevents a
negative pressure condition as created by the circulating
air
blower, causing a flame rollout and/or drawing combustion
products into the structure.
-The furnace is controlled
by a thermostat.
It may not be
"hot wired" to provide heat continuously
to the structure
without thermostatic
control.
-Clean outside air is provided
for combustion.
This is to
nfininfize
the corrosive
effects of adhesives,
sealers and
other
construction
materials.
It
also
prevents
the
entrainment
of drywall dust into combustion
air, which can
cause fouling and plugging of furnace components.
-The
temperature
of the return air to the furnace
is
_
internfittent
operation per our installation instructions.
-The air temperature
rise is within the rated rise range on
the furnace rating plate, and the firing rate has been set to
the nameplate value.
-The filters used to clean the circulating
air during the
construction
process nmst be either changed or thoroughly
cleaned prior to occupancy.
-The furnace, ductwork
and filters are cleaned as necessary
to remove drywall dust and construction
debris from all
HVAC system components
after construction
is completed.
-After construction
is complete,
verify furnace operating
conditions
including
ignition, input rate, temperature
rise
and venting, according to the manufacturer's
instructions.
OR DEATH
Failure
damage,
PROTECTION REQUIRED
/
A07911
Fig. 17 - Freeze
The cooling coil must be installed parallel with or on downstream
side of furnace to avoid condensation in heat exchanger. When
installed parallel with a furnace, dampers or other means used to
control flow of air shall be adequate to prevent chilled air from
entering furnace. If dampers are manually operated, they nmst be
equipped with a means to prevent operation of either unit unless
damper is in full-heat or full-cool position.
Hazardous Locations
HAZARD
to follow
this warning
personal injury, or death.
could
result
in property
FIRE, EXPLOSION,
HAZARD
Improper
location
fire or explosion,
furnace
and its return
air system
shall
be designed
INJURY
or inadequate
OR DEATH
protection
could
result
in
When furnace is installed in a residential garage, it nmst be
installed so that burners and ignition sources are located a
and
installed so that negative pressure created by the air circulating
fan cannot affect another appliance's combustion
air supply or act
to nfix products of combustion
with circulating
air, and that the
air circulating
communicating
Protection
Furnace Location Relative to Cooling Equipment
Do not install furnace on its back. (See Fig. 16.) Safety
control operation
will be adversely affected. Never connect
return-air
ducts to back of furnace.
The
g
_3/ff/ 2MFfONCg4NFIMgM ZI#STALLED
maintained
between 55°F (13°C) and 80°F (27°C), with
no evening setback or shutdown.
The use of the furnace
while the structure is under construction
is deemed to be
FIRE
HAZARD
nfininmm of 18 in. (457 ram) above floor. The furnace nmst
be located
or protected
to avoid physical
damage
by
vehicles.
When furnace is installed
in a public garage,
airplane hangar,
or other building
having
a hazardous
atmosphere,
unit must be installed
in accordance
with
requirements
of National Fire Protection
Association,
Inc.
fan of the furnace, if installed in an enclosure
with another fuel-burning
appliance
not of the
direct-vent
type, shall be operable only when any door or panel
covering an opening in the furnace fan compartment
or in a return
air plenum on ducts is in the closed position.
(See Fig. 5.)
17
and forth until it breaks off. Be careful of sharp edges. (See Fig.
22.)
(8ram)
1
3/4
[]NIT MAY NOT OPERATE
(44ram)
HAZARD
Failure to follow this caution may result in intermittent unit
operation or performance satisfaction.
Do not bend duct flanges inward as shown in Fig. 22. This
will affect airflow across heat exchangers and may cause
limit cycling or premature heat exchanger failure. Remove
duct flange completely or bend it inward a minimum of
210°F (99°C)
as shown in Fig. 22.
1 3/4"
(44ram)
(8ram)
5/16"
Installation
g
(8mm)
(44mm) 1
3/4"
(44mm) 1
A89014
Fig. 18 - Leveling
in Horizontal
Applications
These furnaces can be installed in either horizontal left or right
discharge position. In a crawlspace, furnace can either be hung
from floor joist or installed on suitable blocks or pad. Furnace
can be suspended from each corner by hanger bolts and angle
iron supports. (See Fig. 23.) Cut hanger bolts (4 each 3/8-in.
all-thread rod) to desired length. Use 1 X 3/8-in. flat washers,
3/8-in. lock washers, and 3/8-in. nuts on hanger rods as shown
in Fig. 23. Dimples are provided for hole locations. (See Fig. 2.)
Legs
INSTALLATION
Levelin_ Le_s (If Desired)
[]NIT MAY NOT OPERATE
When furnace is used in upflow position with side inlet(s),
leveling legs may be desired. (See Fig. 18.) Install field-supplied,
corrosion-resistant 5/16-in. (8 ram) machine bolts and nuts.
NOTE: The maximum length of bolt should not exceed 1-1/2
in. (38 mm).
HAZARD
Failure to follow this caution may result in intermittent unit
operation or performance satisfaction.
The entire length of furnace MUST be supported when
furnace is used in a horizontal position to ensure proper
draining. When suspended, bottom brace supports sides
and center blower shelf. When unit is supported from the
ground, blocks or pad should support sides and center
blower shelf area.
1. Position furnace on its back. Locate and drill a 5/16-in. (8
ram) diameter hole in each bottom corner of furnace. (See
Fig. 18.) Holes in bottom closure panel may be used as
guide locations.
2. For each hole, install nut on bolt and then install bolt and
nut in hole. (Install flat washer if desired.)
3. Install another nut on other side of furnace base. (Install
flat washer if desired.)
4. Adjust outside nut to provide desired height, and tighten
inside nut to secure arrangement.
NOTE: Bottom closure nmst be used when leveling legs are
used. See Bottom Closure Panel section.
Installation
in Upflow or Downflow Applications
NOTE: For downflow applications, this furnace is approved for
use on combustible flooring when special base (available from
Manufacturer) Part No. KGB is used. Special base is not required
when this furnace is installed on Manufacturer's Cased Coil
Assembly or when Manufacturer's
Coil Box is used.
1. Determine application being installed from Table 1.
2. Construct hole in floor per dimensions specified in Table 1
and Fig. 19.
3. Construct plenum to dimensions specified in Table 2 and
Fig. 19.
4. If special base (KGASB) is used, install as shown in Fig.
20.
5. If Manufacturer's Cased Coil Assembly or Manufacturer's
Coil Box is used, install as shown in Fig. 21.
A96283
Fig. 19 - Floor and Plenum Opening Dimensions
NOTE: Remove furnace perforated discharge duct flanges when
they interfere with mating flanges on coil on downflow subbase.
To remove furnace perforated discharge duct flange, use hand
scanners, wide duct pliers or duct flange tool to bend flange back
18
FURNACE
FURNACE
(OR OTHER MANUFACTURER'S
COIL CASING WHEN USED)
FACTORY SUPPLIED
CASED COIL OR COIL BOX
/_
COMBUSTIBLE
FLOORING
COMBUSTIBLE
FLOORING
SHEET METAL
PLENUM
SUBBASE
SHEET METAL
PLENUM
FLOOR
OPENING
FLOOR
OPENING
-_
A07585
Fig. 20 - Furnace,
Plenum, and Subbase
Combustible
Floor
Installed
A07586
on a
DISCHARGE
FLANGE
Fig. 21 - Furnace,
Plenum, and Coil Assembly
Installed
on a Combustible
Floor
or Coil Box
DUCT
NO
YES
210 DEG.
MIN
YES
A93029
Fig. 22 - Duct Flanges
19
COMBUSTION-AIR
INTAKE
(NON-DIRECT
VENT/1
COMBUSTION-AIR
PIPE
DIRECT VENT/2-PIPE
ICATION)
_3-1N.
_
ALL SIZES)
MINIMUM CLEARANCE TO
''
COMBUSTION-AIR
INTAKE IS REQUIRED _'_
(NON-DIRECT VENT/1-PIPE
APPLICATION,)
3/8-1N. (10mm) ROD
ill
:II
ANGLE
IRON OR
EQU
5 3/4' (146mm)
ALTERNATE SUPPORT
LOCATION 4-IN. (102mm) MIN
8-IN. (203mm) MAX
(B)
(A) ROD LOCATION
USING DIMPLE
LOCATORS
(SEE DIMENSIONAL
DWG FOR
LOCATIONS)
) (B) J
3/8-1N. HEX
& WASHER (4)
REQD PER ROD
(B)
NOTES:
(A) PREFERRED
ROD LOCATION
(B) ALTERNATE ROD LOCATION
13/16-1N.(21mm) MAX
ALTERNATE SUPPORT
LOCATION FROM BACK
1. A 1 In. (25mm) clearance minimum between
top of furnace and combustible material.
2. The entire length of furnace must be
supported when furnace is used in horizontal
position to ensure proper drainage.
3. For non-direct vent/1 -pipe application,
bottom side combustion-air entry cannot be
used when furnace is installed with hangers
as shown.
A93304
Fig. 23 - Crawlspace
Horizontal
Application
for Direct
Vent / 2-Pipe
20
Installation
and for Ventilated
Combustion
Air Installation
Table 1 - Opening
APPLICATION
FURNACE
CASING
WIDTH
Dimensions
In. (mm)
(APPROVED FACTORY SUPPLIED CASED COILS AND
COiL BOX: CD5, CKR, CAPVP, CARVP, CAPMR CARMR
CNPVR CNRVR AND KCAKC)
Upflow Applications on Combustible or Noncombustible
Flooring (KGASB subbase not required)
Downflow Applications on Noncombustible
subbase not required)
17 ½
Downflow applications
base required)
(445)
on combustible
Flooring (KGASB
flooring
(KGASB sub-
The
When
circulated
19-3/8
19
20
should
be
designed
standards
design CFM
such
on combustible
on Combustible
and sized
as those
at the design
is installed
by the furnace
connections
to prevent
Flooring (KGASB
flooring
(KGASB sub-
Flooring (KGASB
flooring (KGASB
according
published
by:
so that
to areas outside
ducts
to
Air
should
be
used
between
ductwork
Ductwork
air
and
openings
sampling
can be viewed
using light assistance
or a probe
the air stream. The cover attachment
19
19
20
20
(483)
(483)
(508)
(508)
24-1/8
23 - 5/8
(584)
(613)
(600)
22 - 7/8
19
23 - 1/2
(581)
(483)
22 - 1/8
(562)
22-1/2
(572)
19
(483)
19
(483)
24-
3/4
(629)
19-
5/8
(597)
(498)
23 - 3/4
(603)
20- 3/8
(518)
23-1/2
(597)
20
(508)
Acoustical Treatment
Connect supply-air duct to supply-air opening on furnace. The
supply-air duct attachment nmst ONLY be connected to furnace
supply/outlet or air conditioning coil casing (when used) when
installed on non-combustible
material
When installed on
combustible material, supply air duct attachment nmst ONLY be
connected to an accessory subbase or factory approved air
conditioning coil casing. DO NOT cut main furnace casing to
attach supply side air duct, hunfidifier, or other accessories. All
accessories MUST be connected external to furnace main casing.
Supply air opening duct flanges must be modified per Fig. 22.
Horizontal Furnaces
passing
For a furnace not equipped with a cooling coil, the outlet duct
shall be provided with a removable
access panel. This opening
shall be accessible when the furnace is installed and shall be of
exchanger
(498)
20- 3/8
(518)
Connect supply-air duct to 3/4-in. (19 ram)flange on furnace
supply-air outlet. The supply-air duct attachment nmst ONLY be
connected to furnace supply-/outlet-air
duct flanges or air
conditioning coil casing (when used). DO NOT cut main furnace
casing to attach supply side air duct, hunfidifier, or other
accessories. All accessories MUST be connected external to
furnace main casing.
Downflow Furnaces
the
Maintain a 1-in. (25 ram) clearance from combustible
materials
to supply
air ductwork
for a distance
of 36 in. (914 ram)
horizontally
from the furnace. See NFPA 90B or local code for
further requirements.
a size that the heat
20-1/4
(514)
Upflow Furnaces
carry
the space containing
of vibration.
(508)
19
(483)
Supply Air Connections
fasteners for type of ductwork used.
connections
to furnace with code
transnfission
(483)
(629)
19-5/8
Metal duct systems that do not have a 90 degree elbow and 10 ft.
(3M) of main duct to the first branch take-off may require
internal acoustical lining. As an alternative, fibrous ductwork may
be used if constructed and installed in accordance with the latest
edition of SMACNA construction standard on fibrous glass
ducts. Both acoustical lining and fibrous ductwork shall comply
with NFPA 90B as tested by UL Standard 181 for Class 1 Rigid
air ducts.
static pressure.
the supply
(492)
18- 5/8
(473)
23
through
unconditioned
space should be insulated
to enhance
system performance.
When air conditioning
is used, a vapor
barrier is recommended.
such
20
Downflow Applications on Noncombustible
subbase not required)
Secure ductwork with proper
Seal supplyand return-duct
approved tape or duct sealer.
furnace
16-1/2
24-3/4
furnace, the return air must also be handled by a duct(s) sealed to
the furnace casing and ternfinating
outside the space containing
the furnace.
Flexible
(518)
(511 )
Ductwork
a furnace
20-3/8
(425)
20-1/8
Conditioning
Engineers
(ASHRAE)
or consult The Air Systems
Design
Guidelines
reference
tables available
from your local
distributor.
The duct system
should
be sized to handle the
system
16-3/4
(613)
Conditioning
Contractors
Association
(ACCA), Sheet Metal and
Air Conditioning
Contractors
National Association
(SMACNA)
or American
Society
of Heating,
Refrigerating
and Air
required
5/8
(498)
24-1/8
Downflow applications
subbase required)
system
19-
(419)
(495)
Downflow Applications on Noncombustible
subbase not required)
national
3/4
(629)
19-1/2
Requirements
duct
19
16-1/2
24-
Upflow Applications on Combustible or Noncombustible
Flooring (KGASB subbase not required)
DUCTS
accepted
19
(483)
5/8
(422)
(508)
Downflow Applications on Combustible Flooring with Factory
supplied cased coil or Factory supplied coil box (KGASB
subbase not required)
General
15-1/2
19
(483)
16-
(419)
Upflow Applications on Combustible or Noncombustible
Flooring (KGASB subbase not required)
AIR
15-1/8
(613)
D
(483)
Downflow Applications on Combustible Flooring with Factory
supplied cased coil or Factory supplied coil box (KGASB
subbase not required)
(622)
7/8
24-1/8
C
(394)
Downflow applications
base required)
24 - 1/2
16
(406)
15-
FLOOR OPENING
B
(384)
subbase not required)
21
A
(403)
Downflow Applications on Combustible Flooring with Factory
supplied cased coil or Factory supplied coil box (KGASB
(533)
PLENUM OPENING
Connect supply-air duct to supply-air opening on furnace. The
supply-air duct attachment must ONLY be connected to furnace
supply/outlet or air conditioning coil casing (when used). DO
NOT cut main furnace casing to attach supply side air duct,
for possible
can be inserted for
shall prevent leaks.
21
humidifier,
or
connected
external
Return
other
accessories.
to furnace
All
accessories
MUST
be
main casing.
Air Connections
CUT
HAZARD
Failure
FIRE
HAZARD
Failure to follow this warning
death or property damage.
Never
connect
Return
upflow
air duct connections
applications
only.
Upflow
return-air
could result in personal
ducts
to the back
on furnace
injury,
permitted
[]NIT
of return-air
Downflow
The
duct to back of furnace
and Horizontal
return-air
duct
be connected
injury.
OPERATE
unit
For airflow
requirements
above
1800
CFM, see Air
Delivery table in Product Data literature for specific use of
single side inlets. The use of both side inlets, a combination
of one side and the bottom, or the bottom only will ensure
adequate return air openings for airflow requirements
above
1800 CFM.
casing.
to return-air
MAY NOT
Failure to follow this caution may result in intermittent
operation or performance
satisfaction.
Furnaces
nmst
may result in personal
in
The return-air
duct must be connected
to bottom, sides (left or
right), or a combination
of bottom and side(s) of main furnace
casing. Bypass humidifier
may be attached into unused
side
return air portion of the furnace casing. DO NOT connect any
portion
this caution
of the furnace.
side(s)
Furnaces
g
to follow
Use care when cutting
support rods in filters to protect
against
flying pieces
and sharp rod ends. Wear safety
glasses, gloves, and appropriate protective clothing.
opening
provided.
DO NOT cut into casing sides or back to attach any
portion of return-air
duct. Bypass humidifier connections
should
be made at ductwork
Filter
or coil casing
sides exterior
to furnace.
Table
Arrangement
2 - Filter Information
AIR FILTER
LOCATED
- In. (mm)
IN BLOWER COMPARTMENT
Filter Size
Furnace
Casing
FIRE, CARBON
HAZARD
Failure
injury,
MONOXIDE
to follow
this warning
death or property damage.
Never operate
removed.
unit without
Bottom
Return*
(1) 16x
25 x 3/4 t
(406 x 635 x 19)
(1) 16 x 25 x 3/4t
(406 x 635 x 19)
Washable
(1) 16 x 25 x 3/4"
(406 x 635 x 19)
(1) 20 x 25 x 3/4t
(508 x 635 x 19)
Washable
(1)
Washable
AND POISONING
17-1/2
(445)
could
result
in personal
2t
(533)
24-1/2
a filter or with filter access door
(622)
(1 or 2)
t6 x 25 x 3/4"
(406
x 635
* Filters may be field modified
Alternate sizes can be ordered
t Factory-provided
Filter Type
Framed
Side
Return
Width
x 19)
24 x 25 x 3/4t
(610
x 635
x 19)
by cutting filter material and support
from your distributor or dealer
rods (3) in filters.
with the furnace
The air filter arrangement
will vary due to application,
furnace
orientation
and filter type. The filter may be installed
in an
external Filter/Media
cabinet (if provided)
or the furnace blower
compartment.
Factory supplied washable filters are shipped in the
blower compartment.
If a factory-supplied
instructions
for its
external Filter/Media
application,
assembly,
FILTER
RETAINER
cabinet is provided,
and installation
are
packaged with the cabinet. The Filter/Media
cabinet can be used
with the factory-supplied
washable filter or a factory-specified
high-efficiency
If
installing
disposable
the
filter
filter (see cabinet
in
the
furnace
instructions).
blower
compartment,
determine location for filter and relocate filter retaining wire, if
necessary. See Table 2 to determine correct filter size for desired
filter location. Table 2 indicates filter size, location, and quantity
shipped with this furnace. See Fig. 2 for location
bottom and side return-air
openings.
and size of
A93045
Fig. 24 - Filter
22
Installed
for Side Inlet
NOTE:
Side return-air
configurations.
openings
Install filter(s)
For bottom return-air
some furnace widths.
2. Rotate front filler panel downward to release holding tabs.
can ONLY be used in Upflow
as shown
in Fig. 24.
3. Remove bottom closure panel.
applications,
filter may need to be cut to fit
Install filter as shown in Fig. 25.
4. Reinstall front filler panel and screws.
Gas PiDin_
21-iN. (533mm) WIDE
CASINGS ONLY:
SUPPORT RODS (3)
EXTEND 1/4" (6mm) ON
EACH SIDE OF FILTER AND
REST ON CASING FLANGE
171/2-1N.(444mm) WIDE
CASINGS ONLY:
INSTALL FIELD-SUPPLIED
FILTER FILLER STRIP
INDER FILTER.
Gas piping nmst be installed in accordance with national and
local codes. Refer to NFGC in the U.S. Canadian installations
must be made in accordance with CAN/CSA-B149.1-05
and all
authorities having jurisdiction. Gas supply line should be a
separate line running directly from meter to furnace, if possible.
Refer to Table 3 for recommended gas pipe sizing. Risers nmst be
used to connect to furnace and to meter. Support all gas piping
with appropriate straps, hangers, etc. Use a minimum of one
hanger every 6 ft. (1.8M). Joint compound (pipe dope) should be
applied sparingly and only to male threads of joints. Pipe dope
must be resistant to propane gas.
FIRE
OR EXPLOSION
HAZARD
Failure to follow this warning could result in personal
iniury, death, or property damage.
- Connect gas pipe to furnace using a backup wrench to
avoid damaging gas controls.
- Gas valve shutoff switch MUST be facing forward or
tilted upward.
- Never purge a gas line into a combustion chamber.
Never test for gas leaks with an open flame. Use a
commercially available soap solution made specifically
for the detection of leaks to check all connections.
- Use proper length of pipe to avoid stress on gas
control manifold.
- If a flexible connector is required or allowed by
authority having jurisdiction, black iron pipe shall be
installed at furnace gas valve and extend a minimum
of 2 in. (51 ram) outside furnace casing.
-Protect gas valve from water and debris. Gas valve
inlet and/or inlet piping nmst remain capped until gas
supply line is permanently installed to protect the valve
from moisture and debris. Also, install a sediment trap
in the gas supply piping at the inlet to the gas valve.
WASHABLE
FILTER
FILTER
SUPPORT
FILTER
RETAINER
Install a sediment
trap in riser leading to furnace. Trap can be
installed
by connecting
a tee to riser leading to furnace
so
straight-through
section of tee is vertical. Then connect a capped
A00290
Fig. 25 - Bottom
Filter
nipple into lower end of tee. Capped nipple should extend below
level of gas controls.
Place a ground joint union between
gas
Arrangement
NOTE: Remove and discard bottom closure panel when bottom
inlet is used.
control
manifold
Bottom Closure Panel
to furnace
These furnaces are shipped with bottom closure panel installed in
bottom return-air opening. This panel MUST be in place when
side return air is used.
NPT
(3 ram)
plugged
tapping,
accessible
connection,
MUST be installed immediately
supply connection
to furnace and downstream
valve.
An accessible
To remove bottom closure panel, perform following:
and manual
manual
casing
shutoff
and within
gas shutoff
valve
valve.
MUST
6 ft. (1.8M)
(See Fig. 27.)
be installed
of furnace.
external
A l/8-in.
for test gauge
upstream
of gas
of manual shutoff
Gas line grommet
(factory-supplied
loose parts bag) should be
used when installing gas piping.
Gas line entry hole filler plug
1. Tilt or raise furnace and remove two screws holding front
filler panel. (See Fig. 26.)
should
23
be installed
in unused
gas line entry hole. (See Fig. 28.)
I
I
I
I
I
I
i
BOTTOM
CLOSURE
PANEL
g
PANEL
A93047
Fig. 26 - Removing
SUPPLY
_
MANUAL _/
II
SHUTOFF
._
VALVE
Bottom
Closure
Panel
_
SEDIMENT
/
TRAP
/
UNION -J
A93324
Fig. 27 - Typical Gas Pipe Arrangement
COMBUSTION-AIR
PIPE GROMMET
J
UNUSED 1-3/4 -IN. (44 mm)
DIAMETER GAS
/) --I'°_'%T'_GIs
L_ ,.
_
/
CONN.
HOLE
----_4--____WJ
GAS LINE ENTRY
HOLE FILLER PLUG
GAS LINE GROMMET
VENT PIPE GROMMET
NOTE: PIPE GROMMETS AND ENTRY HOLE FILLER
PLUGS ARE INCLUDED IN FACTORY-SUPPLIED
LOOSE PARTS BAG
A05057
Fig. 28 - Casing
Pipe Grommets
24
Table 3 - Maximum Capacity of Pipe*
NOMINAL
IRON
PIPE
SIZE
IN. (MM)
INTERNAL
DIA.
IN. (MM)
LENGTH
10
(3.0)
OF PIPE -
20
(6.0)
30
(9.1)
FT (M)
40
(12.1)
UNIT
50
(15.2)
1/2 (13)
0.622 (158)
175
120
97
62
73
3/4 (19)
0.824 (21)
360
250
200
170
151
1 (25)
1.049 (27)
680
465
375
320
285
1-1/4 (32)
1.380 (35)
1400
950
770
660
580
1-1/2 (38)
1.610 (41)
2100
1460
1180
990
900
The gas valve inlet pressure
use as test gauge
exceed
maximum
connection
tap connection
providing
0.5 psig (14-in.
is suitable
test pressure
DOES
Furnace control must be grounded for proper operation
or control will lock out. Control is grounded through
green/yellow wire connected to gas valve and burner
box screw,
to
llS-v
NOT
wc) stated on gas valve.
should be pressure
in the United States
local, and national
plumbing
and gas codes before
If test pressure
the furnace
has
electrical
0.5 psig (14-in. wc), gas
from furnace
and capped
is equal to or less than 0.5 psig (14-in.
Make
The gas supply
for leakage
pressure
at furnace
shall be within
prior
wc), turn
to placing
the maximum
Electrical
wiring
The furnace
local codes;
Electric Code
CSA C22.1,
(13.6-in.
diagram
all
showing
factory
typical
and
field
with
National
or authorities
shall conform
having
jurisdiction.
with the limitations
of 63 °F
must be electrically
grounded
in accordance
with
or in the absence of local codes, with the National
ANSI/NFPA
70 and/or the Canadian Electric Code,
Part I, if an external electrical source is utilized.
Use a separate branch electrical circuit containing a properly sized
fuse or circuit breaker for this furnace. See Table 4 for wire size
and fuse specifications.
wiring.
Check
for tightness.
in accordance
(33 ° C) rise.
it into
Connections
See Fig. 29 for field wiring
and 24-v
connections
connections
Code CSA C22.1
Field-supplied
wc) and minimum
(4.5-in. wc) inlet supply pressures marked on
the rating plate with the furnace burners ON at HI-HEAT
and
OFF.
Electrical
specifications.
all electrical
Electrical Code (NEC) ANSI/NFPA
70-2008
and any local codes
or ordinances
that might apply. For Canadian
installations,
all
electrical connections
must be made in accordance
with Canadian
off electric shutoff switch located on gas valve before test. It is
recommended
that ground
joint union
be loosened
before
pressure testing. After all connections
have been made, purge
lines and check
service.
with electrical connections,
make certain that
and phase correspond
to that specified
on
furnace rating plate. Also, check to be sure that service provided
by power supply is sufficient
to handle load imposed
by this
equipment.
Refer to rating plate or Table 4 for equipment
and leak tested in accordance
with
or CAN/CSA-B149.1-05
in Canada,
been connected.
If pressure exceeds
supply pipe must be disconnected
before pressure test.
Wiring
Before proceeding
voltage, frequency,
(See
Fig. 60.)
Piping
NFGC
OPERATE
Failure to follow this caution may result in intermittent
unit operation,
* Cubic ft, of gas per hr for gas pressure of 0.5 psig (14-in,
wc) or less, and a
pressure drop of O,5-in, wc (based on a 0.60 specific gravity gas). Ref: Table 9-2
NFPA 54-2002,
NOTE:
MAY NOT
within
field l15-v
NOTE:
electrical
A disconnecting
sight from and readily
Proper
polarity
polarity
is incorrect
control
status
accessible
means
must be maintained
or furnace
code indicator
be located
for 115-v
is not grounded
light will
must
to furnace.
wiring.
properly,
flash rapidly
furnace
and furnace
will NOT operate.
ELECTRICALSHOCK
Failure to follow
injury or death,
HAZARD
this warning
could result in personal
FIRE
HAZARD
Failure to follow this warning
death, or property damage.
Blower access door switch opens 115-v power to furnace
control. No component operation can occur. Do not bypass
or close switch with panel removed,
Do not
connect
and furnace.
25
aluminum
could result in personal
wire between
disconnect
Use only copper wire. (See Fig. 30.)
iniury,
switch
If
....
....
--
NOTE 5 ,
WIRE
_
_
'
I
I
I
I
I
J
I
t
DISCONNECT
..........................
'11
I
208/230- OR
460-V
THREE PHASE
_'--
I
I
, 11
I
I
}N;NN{i
{
@ NOTE',
3 *
SINGLE
PHASE
115-V f
f_
115-V
FIELD-SUPPLIED
DISCONNECT
SWITCH
B
I THERMOSTAT
I
THREE-W,RE----' I'
HEATING
_L_---I
ONLY
_
FIELD 24-V WIRING
FIELD 115-, 208/280-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-, 208/230-, 460-V WIRING
AUXILIARY
J-BOX
t
r-J--A--e----eh
(_
;_ SINGLE
', ', { }
_
....
4_______L==J
J Ii [-_--O---_ND
r-_
-]------_NDI
I _,
CONDENSING
\
UNIT
TWO Wl RE
L_Y
24-V
TERMINAL
FURNACE
CONTROL
CENTER
o-4l-e.==_o===
f-J
....
NOTE1
/ 1 .............
.......
BLOCK
PHASE
NOTES:
1.
2.
8.
4.
Connect Y or Y/Y2 terminal as shown for proper cooling operation.
Proper polarity must be maintained for 115-v wiring.
Use W2 with 2-stage thermostat when zoning.
If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
5. Some thermostats require a "C" terminal connection as shown.
A98325
Fig. 29 - Heating
and Cooling
Table
UNIT SIZE
VOLTSHERTZPHASE
4 - Electrical
OPERATING VOYAGE
RANGE
Maximum*
Application
Minimum*
Wiring
Diagram
Data
MAXIMUM
UNIT
AMPS
MINIMUM
WIRE SIZE
MAXIMUM
WIRE
LENGTH
FT (M)_
MAXIMUM
FUSE OR CKT
BKR
AMPS**
060-14/042060
115-60-1
127
104
8.96
14
30 (9.1)
15
080-14/042080
115-60-1
127
104
8.96
14
60 (9.1)
15
080-20/060080
115-60-1
127
104
14.06
12
31 (9.4)
2O
100-20/060100
115-60-1
127
104
14.06
12
31 (9.4)
2O
120-20/060120
115-60-1
127
104
14.06
12
31 (9.4)
2O
* Permissible limits of voltage
range at which unit will operate satisfactorily.
1- Unit ampacity = 125 percent of largest operating
humidifier, etc.) full load amps.
$ Length shown is as measured
** Time-delay
ELECTRICAL
component's
1 way along wire path between
full load amps plus 100 percent of all other potential operating
unit and service panel for maximum
components'
(EAC,
2 percent voltage drop.
type is recommended.
SHOCK
AND FIRE
Failure to follow this warning
shock, fire, or death.
HAZARD
ELECTRIC
DISCONNECT
SWITCH
could result in electrical
The cabinet MUST have an uninterrupted or unbroken
ground according to NEC ANSI/NFPA 70-2008
and
Canadian Electrical Code CSA C22.1 or local codes to
nfininfize personal injury if an electrical fault should occur.
This may consist of electrical wire or conduit approved for
electrical ground when installed in accordance with existing
electrical codes. Do not use gas piping as an electrical
ground.
Q
A93033
Fig. 30 - Disconnect
Switch
and Furnace
Install power entry hole filler plugs (factory-supplied
parts bag) in unused power entry holes. (See Fig. 31.)
26
in loose
24-v wiring
Make field 24-v thermostat connections at 24-v terminal block
on furnace control. Y wire from thermostat MUST be connected
to Y/Y2 ternfinal on control, as shown in Fig. 19, for proper
cooling operation. The 24-v ternfinal block is marked for easy
connection of field wiring. (See Fig. 33.) The 24-v circuit
contains a 3-amp, automotive-type
fuse located on furnace
control. (See Fig. 33.)
INSTALED
LOCATION
POWER
ENTRY
FILLER
PLUG
SUPPLIED
HOLE
(FACTORY
LOOSE
PARTS
BAG)
Any electrical shorts of 24-v wiring during installation, service,
or maintenance may cause fuse to blow. If fuse replacement is
required, use only a fuse of identical size (3 amp) and type. The
furnace control will flash status code 24 when fuse needs
replacement.
A05113
Fig. 31 - Factory Installed J-Box Location
J-Box
NOTE: Use AWG No. 18 color-coded copper thermostat wire
for lengths up to 100 ft. (30.4M). For wire lengths over 100 ft.,
(30.4M) use AWG No. 16 wire.
Relocation
1. Remove
two
screws
holding
auxiliary
J-box.
(See
Fig.
32.)
2. Rotate J-box
NOTE:
For additional
reference Fig. 52-59.
Accessories
180 ° and attach box to left side, using holes
provided.
FIELD
LOCATION
/ //NoSoATTA LEND
...........
OLE_
FILLER
PLUG
SUPPLIED
(FACTORY
LOOSE
PARTS
POWER
ENTRYNOLE
•
L
SUPPLIED
LOOSE
PARTS
BAG)
U
BAG)
/
7/8 IN DIAMETER
ENTRY
HOLES
UNUSED
POWER
POWER
ENTRY
POWER
ENTRY
HOLES
HOLE
(FACTORY-
POWER
FILLER
ENTRY
PLUG
SUPPLIED
SUPPUED
HOLE
LOOSE
PARTS
diagrams,
BAG)
(FACTORY-
LOOSE
PARTS
BAG)
UNIT
3. Install
loose
31.)
FIRE
power
entry
parts bag)
hole
in unused
OR ELECTRICAL
Relocation
filler
plugs
power
SHOCK
holes.
(See
Fig.
2. Hunfidifier (HUM)
Connect an accessory 24 VAC, 0.5 amp maximum hunfidifier (if used) to the 1/4-in. male quick-connect HUM ternfinal and COM-24V screw ternfinal on the control board
thermostat strip. The HUM ternfinal is energized when
blower is energized in heating. (See Fig. 33.)
Removal of Existing Furnaces from Common Vent Systems
HAZARD
Failure to follow this warning could result in personal
injury, death, or property damage.
If manual disconnect switch is to be mounted on furnace,
select a location where a drill or fastener will not contact
electrical or gas components.
NOTE:
If modulating
automatically
compensates
disconnect
switch
a drill
or
dampers
are
for modulating
is to be mounted
fastener
will
not
HAZARD
DO NOT connect furnace control HUM ternfinal to HUM
(hunfidifier) ternfinal on Thernfidistat :_, Zone Controller or
sinfilar device. See Thermidistat :_, Zone Controller,
thermostat, or controller manufacturer's instructions for
proper connection.
(factory-supplied
entry
DAMAGE
Failure to follow this caution may result in unit component
damage.
A05058
Fig. 32 - J-Box
where
connection
1. Electronic Air Cleaner (EAC)
The furnace control EAC ternfinals are energized with
115v (1.0-amp naaxinmm) during blower operation.
Connect an accessory Electronic Air Cleaner (if used) using 1/4-in. female quick connect ternfinals to the two male
1/4-in. quick-connect ternfinals on the control board
marked EAC-1 and EAC-2. The ternfinals are rated for
115VAC, 1.0 amps maximum and are energized during
blower motor operation. (See Fig. 33.)
NOTE:
Low stage airflow may slightly increase the trace
amount of ozone created by an electronic air cleaner. Individual
sensitivity levels to ozone, along with other operating
characteristics of electronic air cleaners may affect the amount
noticed by an individual. Refer to the air cleaner manufacturer's
installation instructions for more information regarding ozone
and ozone reduction methods available for your air cleaner.
ALTERNATE--
i/
thermostat
When an existing Category I furnace is removed or replaced, the
original venting system may no longer be sized to properly vent
the remaining attached appliances. An improperly sized Category
I venting system could cause the formation of condensate in the
furnace and vent, leakage of condensate and combustion
products, spillage of combustion products into the living space,
etc.
used, blower
motor
dampers.
If manual
on furnace,
select
a location
contact
electrical
or
gas
components.
27
AIR FOR
COMBUSTION
AND VENTILATION
FIRE AND EXPLOSION
FURNACE
RELIABILITY
Failure to follow
component
failure.
This furnace
furnace
or
application.
this
HAZARD
caution
may
result
Failure to follow
this warning
iniury, death, or property damage.
in premature
result
in personal
e}zes.
accordance
with the direct vent (2- pipe) procedures
in the
Combustion
Air and Vent Pipe Systems section within this
supplemental
instruction.
For
optional
ventilated
g
could
Solvent cements are combustible.
Keep away from heat,
sparks, and open flame. Use only in well ventilated
areas.
Avoid breathing
in vapor or allowing contact with skin or
can be vented as either a direct vent (2-pipe)
as an optional
ventilated
combustion
air
A direct vent system
shall be installed
in
combustion
combustion
Application
HAZARD
In Canada, construct all combustion-air
unit of CSA or ULC listed schedule-40
ABSDWV
Canada.
air
applications,
refer
to the ventilated
air option procedures
in the same section.
of this furnace should be indoors with special
pipe and pipe cement.
and vent pipes for this
PVC, PVC-DWV
or
SDR pipe is NOT approved
in
attention given to vent sizing and material, gas input rate,
air temperature
rise, unit leveling, and unit sizing.
CARBON
Combustion-Air
For additional
information
contact
www.Carrier.com.
or vent connectors
of other
appliances
may need to
be re-sized. For any other appliances when resizing vent systems
or vent connectors,
system
or connector
must be sized to
approach minimum
size as determined
using appropriate
table
found in the NFGC or CAN/CSA-BI49.1-05.
The 58MVC
furnaces
can be vented
HAZARD
could
result
in personal
All combustion-air
and vent pipes must be airtight and
watertight.
Pipes must also terminate
exactly as shown in
Fig. 36 for direct vent (2-pipe)
system
or Fig. 37 for
ventilated combustion
air option.
General
Vent system
POISONING
Failure to follow
this warning
iniury, death, or property damage.
and Vent Pipe Systems
venting
MONOXIDE
An abandoned
as either a direct vent furnace
properly
masonry
insulated
chinmey
and
may be used
supported
as a raceway
combustion-air
for
(when
or as an optional ventilated combustion
air application.
A direct
vent system shall be installed in accordance
with the direct vent
applicable) and vent pipes. Each furnace must have its own set of
combustion-air
and vent pipes and be terminated individually,
as
(2-pipe) procedures
in the following
Combustion
Air and Vent
Pipe Systems
section. For optional
ventilated
combustion
air
applications,
refer to the ventilated
combustion
air option
shown in Fig. 36 for Direct Vent (2-Pipe)
ventilated combustion
air option.
procedures
in the same section.
Direct Vent / 2-Pipe
Common
venting
A furnace shall not be connected
to a chinmey
separate appliance designed to burn solid fuel.
prohibited.
System
zone, either through
preferred).
A factory
used in a direct
clearances.
Ventilated
the roof
accessory
vent (2-pipe)
Combustion
In a ventilated
and vent
pressure
serving
or a sidewall
(roof termination
vent termination
kit MUST be
must be taken to prevent the exhaust gases from one appliance
from contaminating
the combustion
air of other gas appliances.
Do not take combustion
air from inside the chinmey when using
system.
the Ventilated
See Fig. 34 for required
Combustion
air option,
the vent terminates
a
Air option.
and
discharges the flue products directly to the outdoors
similar to a
direct vent system. See Fig. 35 for required clearances. All air for
combustion
is piped directly to the furnace from a space that is
[]NIT
well ventilated with outdoor
and the space is well isolated
Failure to follow
operation.
air (such as an attic or crawl space)
from the living space or garage.
Materials
and vent
nmst conform to American
standards
and American
(ASTM) standards.
the USA.
flue
Air Option Materials
combustion
Combustion-air
or Fig. 37 for
Other gas appliances with their own venting system may also use
the abandoned
chinmey as a raceway providing
it is permitted by
local code, the current edition of the National Fuel Gas Code and
the vent or liner manufacturer's
installation
instructions.
Care
In a direct-vent
(2-pipe)
system, all air for combustion
is taken
directly
from outdoor
atmosphere,
and all flue products
are
discharged
to outdoor
atmosphere.
Combustion-air
pipes must terminate
together in the same atmospheric
system
pipe,
fittings,
primers,
and
materials
OPERATE
this caution
HAZARD
may result in intermittent
unit
When vent pipe is exposed to temperatures
below freezing,
such as when it passes through an unheated space or when a
chinmey
is used as a raceway, pipe nmst be insulated
as
shown in Table 6 with Armaflex-type
insulation.
solvents
National
Standards Institute (ANSI)
Society
for Testing
and Materials
See Table 5 for approved
MAY NOT
for use in
Furnace combustion
air and vent pipe connections
are sized for
2- in. pipe. Any pipe size change should be made outside furnace
casing in vertical pipe. The transition
has to be made as close to
the furnace
28
as reasonably
possible.
(See Fig. 380
Table 5 - Approved
ASTM
SPECIFICATION
(MARKED ON
MATERIAL)
D1527
D1785
Combustion-Air
MATERIAL
PIPE
ABS
Pipe
PVC
Pipe
D2235
For ABS
D2241
D2466
PVC
PVC
D2468
ABS
and Vent Pipe, Fitting
FITTINGS
Schedule40
SDR21
Pipe
Schedule40
Solvent
Cement
ABS
Pipe
Fittings
Pipe
Fittings
F438
PVC
CPVC
F441
CPVC
Pipe
F442
CPVC
Pipe
DWV at Schedule40
ABS
F656
For PVC
Schedule40
Schedule40
SDR
Solvent
Cement
Primer
Air Pipe and Vent
pipes
be
cementing
cut, prepared,
any joint.
11. Horizontal portions of the venting system shall be supported to prevent sagging. Support combustion
air piping and
vent piping
and
for SDR-21
strap.
1. Attach combustion air pipe and vent pipe per instructions
in sections "Combustion
Air Pipe" and "Vent Pipe."
2. Working
from
furnace
to outside,
cut pipe
12. Slope
inside and outside
4. Chamfer
outside edge
primer and cement.
to required
5. Clean and dry all surfaces
6. Check
for better
distribution
of
Combustion-Air
depth on pipe.
Determine
7. After pipes have been cut and preassembled,
apply generous layer of cement primer to pipe fitting socket and end
mark. Quickly
apply
approved
to end of pipe and fitting socket (over primer).
ment in a light, unifom_ coat on inside of socket
buildup of excess cement. Apply second coat.
cement
pipe joints
downward
per linear
ft. with
until cement
and Vent Pipe Diameter
combustion-air
and vent pipe diameter.
for
2. When installing vent systems of short pipe length, use the
smallest allowable
pipe diameter.
Do not use pipe size
1/4
greater than required or incomplete combustion,
turbance, or flame sense lockout may occur.
from joint. A continuous
bead of cearound perimeter of a properly made
carefully
and vent piping
of l/4-in,
ft. (.91M)
metal hanging
the larger of these two diameters and use this diameter
both combustion-air
and vent pipes.
NOTE:
Do not count elbows
within furnace.
joint.
10. Handle
air piping
a minimum
hangers.
perforated
1. Using Table 7, individually
determine the diameter of the
combustion-air
and vent pipe allowed. If different, pick
Apply ceto prevent
8. While cement is still wet, twist pipe into socket with
turn. Be sure pipe is fully inserted into fitting socket.
9. Wipe excess cement
ment will be visible
combustion
using
14. Use appropriate
methods to seal openings where combustion air pipe and vent pipe pass through roof or sidewall.
to be joined.
dry fit of pipe and mark insertion
of pipe to insertion
of every 5 ft. (1.5M)(3
or -26 PVC)
13. Horizontal portions of the venting system shall be installed
so as to prevent the accumulation
of condensate.
of pipe.
of pipe
a n_ininmm
towards furnace
no sags between
length(s).
3. Deburr
For PVC
Cellular Core Schedule 40 & DWV
Pipe
for Combustion
that all
permanently
For CPVC
Cellular Core DWV at Schedule40
IPS sizes
Pipe
PVC
IPS sizes
DWV
For CPVC
It is recommended
preassembled
before
For PVC
Fittings
F628
& SDR26
Schedule40
Fittings
Fittings
D2665
Guidelines
For ABS
Cement
D2661
Installation
DESCRIPTION
Solvent
For PVC
F891
Materials
Schedule40
D2564
F493
and Cement
SOLVENT
CEMENT
AND PRIMERS
NOTE:
sets.
casing.
29
A 2-in.
Make
diameter
all pipe diameter
or pipe sections
pipe
flame
dis-
in terminations
or
must
be used
within
furnace
transitions
outside
furnace
casing.
USERINTERFACE
OR ADVANCED
PRODUCT
MONITOR
CONNECTOR
MODEL PLUG
CONNECTOR
CONTINUOUS FAN
(CF) AIRFLOW
SETUPSWITCHES
SW4 SETUP
OAT
SWITCHES
CONNECTOR
\
SWl SETUP
SWITCHESAND
BLOWER OFFDELAY
OAT
PL4
AIR CONDITIONING
(A/C) AIRFLOW
SETUP SWITCHES
HUMIDIFIER
-----'- TERMINAL (24-VAC
O.SAMP MAX,
I
ACRDJ - AIR
CONDITIONING
RELAYDISABLE
JUMPER
24-V THERMOSTAT
TERMINALS
FLASH
UPGRADE
CONNECTOR
(FACTORY
ONLY)
[]
STATUS AND COMM
LED LIGHTS
--------------
[]
\
[]
3-AMP FUSE
[]
[]
m
/ AMP@
1/5
PL3-ECM BLOWER
HARNESS
CONNECTOR
VAC
EAC-1
TRANSFORMER 24-VAC
CONNECTIONS
PL2
BOARD SERIAL
NUMBER
VS HSI HI LOK,,
11S-VAC (L2) NEUTRAL
CONNECTIONS
EAC-1 TERMINAL
(11S -VAC 1.0 AMP MAX,)
PL1 - LOW VOLTAGE MAIN
HARNESS CONNECTOR
115-VAC (L1) LINE
VOLTAGE CONNECTIONS
EXAMPLE:
SOFTWARE
VERSION
NUMBER
PART
NUMBER
PL2 - HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
DATE
CODE
A07422
Fig. 33 - Furnace
Control
3O
/
/
/,
/
/
2_24_=2
_
= _,000
B_uh(30 kW), 36 _
(91 cm) _ _es
> 100,_
Bt_
C
_,E_:e
_oa per_ar_
J
_r_n_e
_o n_-me_ar_lcal
the _,_t
_nl_ I0 _t
50,000 _uh (_Skw"), 12 _r_
5O,OOOBtuh (_SkW)
(30 _W)
(_)for
a_r_
>
closed _r_
air s_pi'y
ap_
_nlet to l_J_idit_ or
12 inches
(30 cm)
and <_ 100,000
appliances
for applieances
Btuh(30kW),
> 100,000
>10,000
36 inches
Btuh(3
(91cm)
kW)
for
Btuh(30kW)
9 inches (23 _) _, app_
> 10._
Btuh (3P,W) and
50i000 Btuh (i 5k_V), 12 troches(30_)_'or _
> 50,000 _h (_SkW)
A08600
Fig. 34 - Direct Vent Termination
31
Clearance
O
_-
//
/
/
//
/
25-24-65-2
[]VENTTERMINAL
Item
\\
Clearance
A
Clearance
above
anticipated
B
snow
Clearance
C
Clearance
D
Vertical
grade,
or door
clearance
Clearance
to an unventilated
F
Clearance
to an outside
G
Clearance
to an inside
H
Clearance
deck,
balcony,
or
to each
may
soffit
located
extended
regulator
regulator
above
assembly
to a mechanical
under
M
Clearance
to each
below
terminal
vent outlet
4 feet(l.2
m) below
(2)
for appliances
<_ 10,000
Btuh (3 kW)
above
3 feet (91 cm) within
3 feet (91 cm)
or to the side of the opening.
1 foot(30
cm
the opening.
air supply
a veranda,
porch,
of the furnace
appliance's
direct
or
extended
above
15 feet
(4.5 m) above
the meter/regulator
4 feet(t .2 m) below
above opening.
intake
3 feet (91 cm) above
cm)
or to the side of opening:
if within
1 foot
(30 cm)
10 feet (3 m horizontally)
+
or
heater
or exhaust.
O
Clearance
p
Clearance
above
driveway
located
vent
_iithin
assembly
12 inches(30
Clearance
to the vent terminal
of a dryer vent, water heater
vent, or other appliances
direct vent intake or exhaust.
a plumbing
the meter/regulator
6 feet (1.83 m)
or balcony
to a dryer or water
vent
m) above
6 inches (15 cm) for appliances
-< 10,000 Btuh (3 kW)
12 inches
( 30 cm) for appliances
> 10,000 Btuh (3 kW0)
and -< 100,000
Btuh (30 kW)
36 inches
(91 cm) for appliances
> t00,000
Btuh (30 kW)
inlet
deck,
side of the centerline
15 feet(4.5
3 feet (91 cm)
N
stack
paved sidewalk
or paved
on public property
7 feet (2.13m)**
In accordance
with the current
CSA
B149.1,
In accordance
with the current
ANSI
Z223.1/NFPA
Natural
Gas and
Propane
54, National
Fuel
Installation
7 feet (2.13m)
Code
Gas Code
roof surface
only if veranda,
porch,
For clearances
not specified
Manufacturer's
installation
A vent
(15 cm)
12 inches ( 30 cm) for appliances
> 10,000 Btuh (3 kW0)
and -< 100,000
Btuh (30 kW), 36 inches (9t cm) for
appliances
> 100,000
Btuh (30 kW)
assembly
Clearance
Permitted
(30 cm)
corner
Clearance
+
12 inches
corner
L
(46 cm) above
U.S. Installation
#
the
K
18"
(1)
IS NOT PERMITED
the
from
Clearance
to non-mechanical
air supply inlet to building
the combustion
air inlet to any other appliance
#
TERMINAL
soffit
side of the centerline
to service
above
of 2"(61cm)
J
(2.)
Installation
WHERE
window
distance
or gas service
from
(30cm)
6 inches
Clearance
or other
12 inches
be opened
I
(1.)
**
that
to a ventilated
E
vent,
AREA
Canadian
porch,
closed
terminal
within a horizontal
centerline
of the terminal
vent
INLET
level
to a permanently
meter
AIR SUPPLY
Descriptions
veranda,
to a window
electrical
_
shall not terminate
deck,
in ANSI
or balcony
is fully open
Z223.1/NFPA
54 or CSA
on a minimum
B149.t,
of two sides
clearances
shall
beneath
the floor.
be in accordance
with local installation
codes
and the requirements
of the gas supplier
and
the
instructions.
above
a sidewalk
or paved
driveway
that
is located
between
two single
family
dwellings
and serves
both
dwellings.
Notes:
1.
2.
The
vent for this appliance
a.
Over
public
b.
Near
soffit
c.
Where
When
3
Avoid
venting
vents
space
vents
vapor could
cause
vent terminations,
can cause
under
not terminate
or
or crawl
condensate
locating
Recirculation
shall
walkways;
damage
consideration
poor combustion,
a deck
or other
or large
areas where
or could
must
be given
inlet condensate
overhang.
Recirculation
condensate
be detrimental
to prevailing
problems,
could
and
occur
or vapor
could
create
a nusiance
to the operation
of regulators,
winds,
and
location,
accelerated
and
cause
or hazard
relief
valves,
other c onditions
corrosion
of the heat
performance
or system
or property
damage;
or
or other equipment.
which
may cause
recirculation
of the combustiob
products
of adjacent
vents.
exchangers.
problems.
A08601
Fig. 35 - Ventilated
Combustion
Air Vent Termination
32
Clearance
Roof Te rmLnation
(Preferred)
Concwntric Vent and Combustion
Roof [urmination (pm_rmd)
Air
......
between
combustbn
aEr and vent
8 3/4 in (222ram)for
Maintain
clearance
.......
3 in
(76ram)kit
12 in (305mm)_n
above
hslghwe_ _e_aen
I.......
A05090
Fig. 36 - Combustion
Air and Vent Termination
R_f
_._-f
_"_"
_'_'_
Term_natbn
(610ram)
abova
System
(Preferred)
above
Maintain
minimum
h_hest
12 ciearancein
anticipated
(305ram)
snow
level maximum
of
24 in
for Direct Vent (2-pipe)
.........
roof
.......
_": i[
_--.
[
Abandoned
used
as
(per
masonry
raceway
code)
12 in
rain (305
overhang
6 in (152ram)
between
waiJ
10 in (254mm)
12 in (3O5 ram) rain
overhang
or roof
mm)fron
or r_f
minimum
cieara_e
and end of vent pipe
maximum
pipe
Jen_[h
305ram)
minimum
clearance
above
highest
anticipated
snow leveJ or grade
whichever
is greater
from
with
Sidewall
Stra_Jht
Tel minat_n
Pipe (preferred)
Maintain
12in
305ram
minimum
c earance
above
highest anticipated
s_qow leve[ or glade
",_hichever
is greate_
Side wall termination
X\\x\\x\
\
with
2 elbows
(preferred)
A05091
Fig. 37 - Vent Pipe Termination
for Ventilated
33
Combustion
Air System
COMBUSTION
AIR PIPE
General
Furnace combustion-air connection nmst be attached as shown in
Fig. 39. Combustion-air intake housing plug may need to be
(
J
relocated
FURNACE
in some applications.
NOTE:
Select
1 vent
pipe
1 combustion-air
connection
pipe
and
NOTE:
Select
connection.
1 vent
pipe connection
1 combustion-air
pipe
and
connection.
AIR
NOT IN
HORIZONTAL
SECTION
COMBUSTION-AIR
_
COMBUSTION-AIR
VENT
TRANSITION IN
VERTICAL SECTION
A93034
Fig. 38 - Combustion
Location
COMBUSTIONAIR
Air and Vent Pipe Transition
and Elbow
@
AIR
Configuration
UPFLOW
DOWNFLOW
COMBUSTIONAIR
COMBUSTIONAIR
VENT
UNIT
OPERATION
Failure to follow
operation.
COMBUSTIONAIR
FLOW
VENT
HAZARD
this caution
may result in internfittent
When installing
combustion
air and vent system
pipe length, the smallest allowable pipe diameter
used.
unit
of short
must be
HORIZONTAL-LEFT
DISCHARGE
HORIZONTAL-RIGHT
DISCHARGE
A96187
UNIT
CORROSION
Failure to follow
damage.
Fig. 39 - Combustion
HAZARD
this caution
may result in unit component
NOTE:
Air and Vent
All pipe joints
combustion-air
necessary
to remove
NOTE:
A 2-in.
because that air is frequently
contaminated
by halogens,
which include fluorides,
chlorides, bromides,
and iodides.
These elements are found in aerosols, detergents, bleaches,
cleaning solvents, salts, air fresheners, adhesives, paint, and
other household
products.
Locate combustion-air
inlet as
far as possible from swimming
pool and swimming
pool
pump house.
casing.
Make
Attachment
nmst be cemented
pipe to inlet housing
Excessive
exposure
to contaminated
combustion
air may
result
in safety
and
performance
related
problems.
Combustion
air nmst not be taken from inside structure
Pipe Connections
except
connection,
attachment
of
since it may be
pipe for servicing.
diameter
pipe nmst be used within
all pipe diameter
of Combustion
transitions
outside
the furnace
furnace
casing.
Air Pipe
NOTE:
Combustion
air pipe system has the same diameter and
same
length
as the vent
pipe
as mentioned
in section
"Combustion-
-Air and Vent Pipe Diameter."
1. Deternfine location of combustion-air
tion to combustion-air
intake housing
intake pipe connecas shown in Fig. 39
for application.
EXAMPLE:
This 80,000
elevation 650 ft. (198.1M)
2. Verify
BTUH furnace located in Indianapolis,
above sea level, could be installed as a
combustion-air
intake
stalled in appropriate
unused
direct Vent / 2-pipe system that requires 3 elbows and 17 ft.
(5.1M) of vent pipe, along with 5 elbows and 16 ft. (4.8M) of
combustion-air
pipe. Table 7 indicates this application
would
3. Install combustion-air
loose parts bag) into
air pipe hole.
allow a l-l/2-in,
diameter vent pipe, but require a 2-in. diameter
combustion
air pipe. According
to Table 7, l-l/2-in,
diameter
4. Deternfine
installed
pipe is good for 20 ft. (6.0M) with 3 elbows, but only 10 ft.
(3.0M) with 5 elbows. Therefore,
2-in. diameter pipe nmst be
forated
of combustion
in the combustion
disk half
5. Insert
housing
(1600.2M)
above sea level, installation
would
require 2- in.
diameter vent pipe and combustion-air
pipe. At 5001 to 6000-ft
NOTE:
remove
6. Drill a l/8-in,
combustion
housing
of igniter
hole in 2-in,
hole in intake housing
supplied
combustion-air
air inlet
pipe
to be
Insert
into
per-
in loose
intake
intake
air intake pipe permanently
since
it may be necessary
to
or flame sensor.
combustion
air pipe using the
as a guide.
a field-supplied
into combustion
34
housing.
(factory
where
combustion
air intake
pipe for service
7. Install
is in-
as shown in Fig. 39.
Do not cement
to combustion
elevation,
l-l/2-in,
pipe is not allowed with
pipe is good for 68 ft. (20.7M) with 5 elbows
fitting
connection.
air disk halves
air intake
or assembly
assembled
plug
pipe grommet (factory-supplied
in
selected furnace casing combustion
parts bag) in intake housing
pipe will be connected.
used for both vent and combustion-air
pipes since the largest
required diameter nmst always be used for both pipes. If the same
installation
was made
in Albuquerque,
elevation
5250
ft.
(1524M - 1828M)
5 elbows, but 2-in.
are required.
the number
housing
intake housing
air pipe.
No. 6 or No. 8 sheet
metal screw
AIR
INTAKE HOUSING
3/8" ID TUBE
BURNER
BOX
[]NIT
CORROSION
Failure to follow
component
life.
this caution
may result in reduced
furnace
Air for combustion
nmst not be contanfinated
by halogen
compounds,
which include fluoride, chloride, bronfide, and
iodide. These elements may corrode heat exchangers
and
shorten furnace life. Air contanfinants
are found in aerosol
_COMBUSTION
3/16"
DRILL
HAZARD
AIR PIPE
sprays, detergents,
bleaches,
cleaning
solvents,
fresheners, and other household products.
salts,
air
TO OPEN
DRAIN
The
Fig. 40 - Intake
8. Install
casing
Housing
hole
filler
parts bag) in unused
Attachment
cap
Air Intake
Housing
No. 6 or No. 8 sheet metal screw.
NOTE:
NOT
DO
intake housing
A plugged
OVER-TIGHTEN
SCREW.
or fitting may cause air leakage
drain connection
use when moisture
combustion
box.
in
be
is found
in combustion
CARBON
Breakage
pipe and
This tube should be routed to open condensate
drain for furnace
and A/C (if used), and should be trapped, as shown in Fig. 40.
NOTE:
(Direct Vent / 2-Pipe
System ONLY).
combustion
air intake may be a result of improper
Moisture
in
ternfination.
Ensure
to those
shown
air pipe
ternfination
is sinfilar
in Fig. 36 so that it will not be susceptible
light snow
Combustion
or others sources
of moisture
Air Termination
NOTE:
must be provided
•
in accordance
U.S. Installations:
Z223.1-2006,
•
appliances
Air
9.3 NFPA
provisions
Installations:
Systems
and dilution
air
as a Direct Vent/
louvers
and Ventilation
result
in personal
fans, kitchen ventilation
fans,
fans or fireplaces could create a
CONDITION
at the furnace.
have
the same
diameter
as
a space that freely
there are adequate
in the space.
In deternfining
of the louvers,
assumed
54/ANSI
of the local building
or
HAZARD
could
air pipe must
the free area of an opening,
grilles,
the free area of a louver
Air for Combustion
Canadian
authorities
ventilation,
effect
with:
Section
applicable
Venting
Combustion
combustion,
attics
permanent ventilation
openings
directly to outdoors having free
area of at least 1-in.2/4,000
Btuh of total input rating for all gas
in.
Combustion
POISONING
this warning
Combustion
NOTE:
for adequate
outdoors
An attic or crawlspace
may be considered
communicates
with the outdoors
provided
as
Option
Provisions
in
vent pipe.
to area where
could be pulled
- Ventilated
ternfinated
Makeup air MUST be provided for the ventilation
devices,
in addition to that required
by the furnace. Refer to the
Carbon Monoxide
Poisoning Hazard warning at the end of
this section to deternfine if an adequate amount of make-up
air is available.
on this fitting for
air intake
MONOXIDE
The operation
of exhaust
clothes dryers, attic exhaust
NEGATIVE
PRESSURE
of
If use of this drain connection
is desired, drill out fitting's tap
plug with 3/16-in. drill and connect a field-supplied
3/8-in. tube.
combustion
be
fans designed to operate during
fans are present in these areas,
air pipe must ternfinate
Failure to follow
iniury or death.
to occur.
has been provided
cannot
Fitting
be installed
fitting nmst
sealant, or by drilling a 1/8-in. hole in
intake
housing
as a guide.
Install a
field-supplied
pipe
hole.
Plug
nmst
This
air
that use ventilation
season. If ventilation
the combustion
2-Pipe system.
in loose
air pipe casing
intake plug fitting
air intake housing.
attached by using RTV
fitting,
using hole in
Drain
(factory-supplied
combustion
of Combustion
The combustion-air
unused combustion
Plug Fitting
combustion
crawlspaces
the heating
A93035
and
that wood
louvers
or grille
be constructed
than l/4-in,
so they cannot
the blocking
nmst be considered.
design
is unknown,
have a 20 percent
or grilles have a 60 percent
must not be smaller
codes.
and screens
free area, and metal
free area. Screens,
mesh.
If
it may be
Louvers
when used,
and grilles must
be closed.
Part 8 of CAN/CS-B149.1-05.
and Air Supply
for Appliances
and all
having jurisdiction.
air is piped
directly
to the burner
box
on furnace
CARBON
using the same materials used to vent the furnace. (See Table 5.)
The combustion
air pipe is ternfinated
in an attic or crawl space
that is well ventilated with OUTDOOR
AIR and is well isolated
from the living space or garage.
If the furnace
ventilated attic, crawlspace
or other enclosure,
pipe can be ternfinated in the same space.
is installed
Failure to follow
iniury or death.
in a well
the combustion
MONOXIDE
POISONING
this warning
could
HAZARD
result
in personal
Many homes require air to be supplied from outdoors
for
furnace combustion,
ventilation,
and dilution of flue gases.
air
The furnace combustion
air supply must
accordance with this instruction manual.
Attic terminations
open end pointing
the elbow
35
be provided
in
require at least (1) 90 degree elbow, with the
horizontally
or downward.
The open end of
must be at least 12-in.
(305 ram) above
any insulation
g
or other materials.
smaller
Screen
than 3/8-inch
Crawlspace
the elbow with a wire mesh screen
square.
ternfinations
no
VENT PIPE
(See Fig. 41.)
require
air intake pipe to point downward.
the open
Maintain
General
end of the combustion
Furnace vent connection must be attached as shown in Fig. 39.
3 inches (76 ram) of
clearance below the floor joist insulation and 12 inches (305 ram)
above the grade. Screen the elbow with a wire mesh screen no
smaller
than 3/8-in.
(10 ram) square. (See Fig. 42 and 43.)
CARBON
MONOXIDE
PROPERTY
DAMAGE
CARBON
MONOXIDE
POISONING
HAZARD
Failure to follow
iniury or death.
Failure
to follow
the steps outlined
below
for each
appliance connected to the venting system being placed into
operation
could result in carbon monoxide
poisoning
or
death.
g
NOTE:
exiting
NOTE:
pipe nmst be used within
transitions
outside
the
furnace
(See Fig. 44.)
of Vent Pipe
Vent pipe system
has the same diameter
air pipe as mentioned
in section
and same length
"Combustion
Air
Pipe and Vent Pipe Diameter."
[]NIT
DAMAGE
HAZARD
Failure to follow this caution may result in unit component
damage.
Inducer housing outlet cap nmst be installed and fully
seated against inducer housing. Clamp must be tightened to
prevent any condensate leakage.
Vent pipe must be installed and fully seated against inducer
housing. Clamp must be tightened to prevent any
condensate leakage.
7. Test for spillage from draft hood equipped
appliances at the draft hood relief opening after 5
nfinutes of main burner operation. Use the flame of a
match or candle.
1. Deternfine location of vent pipe connection to inducer
housing as shown in Fig. 39 for application.
2. Verify synthetic rubber inducer housing outlet cap and
clamp are installed on appropriate unused inducer housing
connection and that clamp is tight.
8. If improper venting is observed during any of the
above tests, the venting system must be corrected in
accordance with the National Fuel Gas Code, ANSI
Z223.1-2006/NFPA
54-2006
and/or
CSA
B149.1-05, Natural Gas and Propane Installation
Code.
3. Install vent pipe grommet (factory-supplied in loose parts
bag) into selected furnace casing vent pipe hole. (See Fig.
28.)
4. Be certain that mating surfaces of inducer housing connection synthetic rubber coupling, and 2-in. diameter vent
pipe are clean and dry. Assemble the synthetic rubber vent
coupling (with 2 loose clamps) onto inducer housing connection. Insert the 2-in. diameter vent pipe through the
synthetic rubber coupling and fully into inducer housing
connection until it touches a stop inside the inducer housing outlet. Tighten the screws on both clamps to 15-in lb.
of torque.
9. After it has been deternfined that each appliance
connected to the venting system properly vents when
tested as outlined above, return doors, windows,
exhaust fans, fireplace dampers and any other
gas-fired burning
appliance to their previous
conditions of use.
System
the structure
(51 ram) diameter
vent pipe outlet.
as combustion
6. Follow the lighting instructions. Place the appliance
being inspected into operation. Adjust the thermostat
so appliance is operating continuously.
air pipe must terminate outside
A 2-in.
Attachment
5. Turn on clothes dryers and any appliance not
connected to the venting system. Turn on any
exhaust fans, such as range hoods and bathroom
exhausts, so they are operating at maximum speed.
Do not operate a summer exhaust fan.
vent pipe as shown in Fig. 36. Follow the clearance
shown in Fig. 39. Refer to Vent Termination
section
details on ternfination
options.
in personal
undesirable.
A 12-in. (305 ram) nfininmm offset pipe section is
recommended
to reduce excessive
condensate
droplets
from
3. As far as practical, close all building doors and
windows and all doors between the space in which
the appliance(s) connected to the venting system are
located and other spaces of the building.
4. Close fireplace dampers.
Combustion
result
The nfininmm vent pipe length for these furnaces is 5 ft. (I.5M)
Short pipe lengths
(5-8
ft. or 1.5M-2.4M)
may discharge
condensate
droplets.
These
condensate
droplets
may
be
2. Inspect the venting system for proper size and
horizontal pitch, as required in the National Fuel Gas
Code, ANSI Z223.1-2006/NFPA
54-2006 or the
CSA B149.1-05,
Natural
Gas and Propane
Installation Code and these instructions. Deternfine
that there is no blockage or restriction, leakage,
corrosion and other deficiencies, which could cause
an unsafe condition.
Vent / 2-Pipe
could
furnace casing. Make all pipe diameter
casing per Fig. 38.
1. Seal any unused openings in venting system.
Air Termination-Direct
this warning
AND
Vent pipes must be airtight.
The following steps shall be followed for each appliance
connected to the venting system being placed into
operation, while all other appliances connected to the
venting system are not in operation:
Combustion
POISONING
HAZARD
5. Install casing hole filler cap (factory-supplied
parts bag) in unused vent pipe casing hole.
with the
requirements
for complete
36
in loose
B
A06672
Fig. 41 - Attic
Termination
Pipe hangar
Ventilated
Combustion
Air
intake termination
in crawl
3"
(76.2 mm)
t
minimum
(304.8 mm)
A06673
Fig. 42 - Crawlspace
Termination
37
3" (76.2mm)
minimum
Ventilated
intake
Combustion
termination
Air
|
in crawl
12" (304.8mm)
space
i
minimum
A06674
Fig. 43 - Crawlspace
Termination
-t_----
/
_3osmm_
_:_H
(305mm_
VENT PIPE
VENT
P'PE--'_I
I __
!! !If c°MBusm'°"-A'R
P'PE
HORIZONTAL
12" MIN---_
TO ROOF
if
H ORIZONTAL
F
VENT
COMBUSTION-AIR
PIPE
PIPE
VENT
VERTICAL
PIPE
TO S IDEWALL
COMBUSTION-AIR
COMBUSTION-AIR
r-
_
TO ROOF
VERTICAL
PIPE
TO SIDEWALL
NOTE: A 12-in. (304.8mm) minimum offset pipe section is recommended
with short (5 to 8 ft / 1.5 to 2.5M) vent systems. This recommendation
is to reduce excessive condensate
droplets.
A96230
Fig. 44 - Short
Vent (5 to 8 ft. / 1.5M
38
to 2.4M)
System
NOTE:
Starting
at furnace,
1/4-in. (6 ram) per linear
between hangers.
VENT
slope
ft. back
vent
pipe
toward
a minimum
furnace
with
of
Concentric
General
2. Loosely
For vent termination
clearance, refer to Fig. 34 for Direct Vent /
2- Pipe system
and Fig. 35 for Ventilated
Combustion
Air
option.
termination
a corrosive
products
NOTE:
of building surfaces with
to corrosive
combustion
Kit (Direct
determining
the following
Kit (Direct
Roof
system
ONLY)
A factory
be used. See section "Vent
Vent / 2-Pipe
appropriate
System
location
Only)"
for termination,
requirements
vent/combustion
using instructions
kit with
rain shield
Sidewall
height
REMOVED
hole.
through
roof
terminations-Locate
assembly
through
sidewall
1-in
(25 ram).
4. Disassemble
loose pipe fittings. Clean and cement
same procedures
as used for system piping.
consider
stated in Fig. 34
Two-Pipe
required
dimensions
Termination
to
in Fig. 36 or Fig. 37.
with rain shield positioned
no more than
from wall as shown in Fig. 36 and Fig. 37.
in this
through
to accumulate
it through
assembly
as shown
air terminain kit.
or other materials
when installing
terminations-Locate
5. Check
with all clearance
concentric
kit using the
General"
in
kit, or one 5-in. dia-
together
Do not allow insulation
inside of pipe assembly
guidelines:
1. Comply
assembled
appropriate
(Direct
Vent / 2-Pipe
termination
kit MUST
Termination
instruction.
When
3. Slide
hole.
is preferred since it is less susceptible to damage
and it has less visible vent vapors. Sidewall
require sealing or shielding
resistance
material
due
assemble
tion components
of vent system.
NOTE:
accessory
Air Termination
Only
1. Cut one 4-in. diameter hole for 2-in.
meter hole for 3-in. kit.
(direct Vent / 2-pipe system only) and vent pipe
outside structure, either through sidewall or roof.
Roof termination
or contamination,
System
Determine
an appropriate
location for termination
guidelines
provided
in section "Vent Termination:
this instruction.
TERMINATION
Combustion-air
must terminate
Vent / Combustion
Vent / 2-Pipe
no sags
using
as shown.
Kit (Direct
Vent / 2-Pipe
System
or Fig. 35 per application.
2. Termination
or termination
vent vapors will not
tioning equipment.
kit should
damage
be positioned
plants/shrubs
where
Determine
an appropriate location for termination
guidelines
provided
in section "Vent Termination:
this instruction.
or air condi-
3. Termination or termination
kit should be positioned so that
it will not be affected by wind eddy, such as inside building corners, nor by recirculation
leaves, or light snow.
of flue gases,
1. Cut 2 holes, 1 for each pipe,
size being used.
airborne
2. Loosely
install
combustion-air
4. Termination
or termination
kit should be positioned where
it will not be damaged by or subjected to foreign objects
such as stones,
5. Termination
vent vapors
Extended
kit should
be positioned
Sidewall
combustion
(direct
Vent / 2-pipe
by insulating
pipe as indicated
on
Roof
terminations-Loosely
install pipe coupling
properly cut vent pipe. Coupling
nmst be positioned
on
so
Sidewall
36.
system only) and vent pipe termination
may be extended beyond
area shown in Fig. 36 or in Fig. 37 per application
in outside
ambient
in bracket
size for pipe
assembly
ated by dashed
into 90 ° elbow,
be used.
Pipes
air pipe termination
of appropriate
and place
bracket will mount as shown in Fig. 38.
For applications
using combustion-air
pipe option,
where
are not objectionable.
Exposed
Sidewall
balls, etc.
or termination
elbow
pipe.
kit using the
General"
in
terminations-Install
For applications
in Table 6.
3. Disassemble
loose
same procedures
4. Check
bracket
using vent pipe option
in Fig. 36, rotate vent elbow
1. Determine
combustion
air pipe diameter
(direct Vent /
2-pipe
system only) and vent pipe diameter,
as stated
above, using total pipe length and number of elbows.
required
indic-
lines in Fig. 36, install 90 ° street elbow
making a U-fitting. A 180 ° U-fitting may
as shown
indicated
90 ° from position
pipe fittings.
Clean
as used for system
dimensions
as shown
in Fig.
by dashed
shown
lines
in Fig. 36.
and cement
using
piping.
in Fig. 36.
2. Using winter design temperature
(used in load calculations), find appropriate
temperature
for your application
and furnace model.
(Direct Vent / 2-Pipe System ONLY)-When
2 or more 58MVC
furnaces are vented near each other, 2 vent terminations
may be
3. Determine
installed
required
insulation
thickness
for exposed
pipe
length(s).
NOTE:
located
Pipe length
(ft / M) specified
in unconditioned
pipe length as specified
Vent Termination
NOTE: Always
latest version.
spaces
for n_axinmm
cannot
exceed
pipe lengths
total
allowable
in Table 6.
Kit (Direct Vent / 2-Pipe
refer to the instructions
System
in termination
Only)
kit for the
Combustion
air and vent pipes MUST terminate outside structure.
A factory accessory termination
kit must be installed as shown in
Table
8.
termination
NOTE:
There
are four options
of vent/combustion
kits available as shown in Table 8.
Combustion
air pipe must
have
the same
diameter
as shown
in Fig. 36, but next vent termination
must be at
least 36 in. (914 ram) away from first 2 terminations.
It is
important that vent terminations
be made as shown in Fig. 36 to
avoid recirculation
of flue gases.
air
as
vent pipe.
39
Table
6-
Maximum
Allowable
Winter
UNIT SIZE
060
WINTER DESIGN
TEMPERATURE
in
INSULATION THICKNESS1"
3/8
1/2
6/4
(MM)
2 (51)
28 (8.5)
50 (15.2)
56 (17.1)
66 (20.1)
70 (21.6)
O°F/-18°C
2 (51)
11 (6.4)
25 (7.6)
29 (8.8)
35 (10.7)
41 (12.5)
2 (51)
4
15 (4.6)
18 (5.5)
26 (7.0)
27 (8.2)
°C
O°F/-18°C
-20 ° F / -29
°C
(1.2)
1
2 (51)
36 (11.0)
65 (19.8)
70 (21.3)
70 (21.3)
70 (21.6)
2 (51)
16 (4.9)
34 (10.4)
69 (11.9)
47 (14.6)
55 (16.8)
2 (51)
8 (2.4)
21 (6.4)
25 (7.6)
31 (9.4)
37 (11.6)
20OF/-7oc
2-1/2
(64)
42 (12.8)
70 (21.6)
70 (21.3)
70 (21.3)
70 (21.6)
O°F/-18°C
2-1/2
(64)
18 (5.5)
38 (11.6)
43 (13.1)
53 (16.2)
61 (18.6)
2-1/2
(64)
9 (2.7)
26 (7.0)
27 (8.2)
34 (10.4)
41 (12.5)
-20 ° F / -29
12O
PIPE
IN.
with Insulation
Ambient*
20OF/-7oc
20OF/-7oc
100
Vent Pipe Length
Temperature
0
-20 ° F / -29
080
MAXIMUM
DIAMETER
Exposed
Design
°C
20OF/-7oc
3 (76)
44 (13.4)
70 (21.6)
70 (21.3)
70 (21.3)
70 (21.3)
OOF/-18oc
3 (76)
18 (5.5)
38 (11.6)
44 (13.4)
54 (16.5)
63 (19.2)
3 (76)
8 (2.4)
26 (7.0)
27 (8.2)
35 (10.7)
41 (12.5)
-20 ° F / -29
°C
Pipe length (if/m) specified for maximum pipe lengths located in unconditioned
pipe length as specified in Table 7.
1qnsulation thickness based on R value of 3.5 per in.
spaces.
40
Pipes located in unconditioned
space cannot exceed total allowable
Table
ALTITUDE
UNIT SIZE
(BTUH)
7 - Maximum
Direct Vent (2-Pipe
Termination
1
2
3
4
5
6
45 (13.7)
40 (12.9)
35 (10.7)
30 (9.1)
25 (7.6)
70 (21.3)
30 (9.14)
70 (21.3)
25 (7.6)
70 (21.3)
20 (8.1)
70 (21.3)
15 (4.6)
70 (21.3)
10 (3.0)
70 (21.3)
5 (1.5)
2 (51)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
2 (51)
45 (13.7)
70 (21.3)
40 (12.9)
70 (21.3)
35 (10.7)
70 (21.3)
30 (9.1)
70 (21.3)
25 (7.6)
70 (21.3)
20 (6.1)
70 (21.3)
NA
15 (4.8)
NA
NA
NA
NA
NA
NA
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
2 Pipe or 2-In.
Concentric
(51)
2 Pipe or 2-In.
Concentric
(51)
1-1/2
80,000
100,000
2 Pipe or 2-In.
Concentric
(51)
2 Pipe or 3-In.
Concentric
(76)
2001
one
disk
3 (76) one
disk
10 (3.0)
35 (10.7)
NA
30 (9.1)
one disM-
70 (21.3)
70 (21.3)
Type
ALTITUDE
3
4
5
6
40 (12.9)
35 (10.7)
30 (9.14)
25 (7.6)
20 (8.1)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
26 (7.9)
21 (8.4)
18 (4.9)
11 (3.4)
8 (1.8)
NA
2 (51)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
2 (51)
40
(12.2)
35 (10.7)
70 (21.3)
70 (21.3)
(51)
1-1/2
80,000
2 Pipe or 2-In.
Concentric
(51)
1-1/2
2 Pipe or 2-In.
Concentric
(51)
2 Pipe or 3-In.
Concentric
(76)
UNIT SIZE
(BTUH)
3
(78) one
3
Termination
disk
(76) one
diskl-
4001
(1219
to 5000
ALTITUDE
5001
(1524
to 6000
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
25 (7.6)
20 (6.1)
15 (4.6)
10 (3.0)
5 (1.5)
NA
2 (51)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
2 (51)
38 (11.6)
33 (10.1)
28 (8.5)
23 (7.0)
18 (5.5)
13 (4.0)
2 - 1/2 (84)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
2 (51)
(38)
(78) one
29 (8.8)
24 (7.3)
10 (3.0)
NA
NA
NA
59 (18.0)
58 (17.8)
57 (17.4)
57 (17.4)
56 (17.0)
1
2
3
4
5
6
40 (12.2)
35 (10.7)
30 (9.1)
25 (7.6)
20 (8.1)
15 (9.6)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
23 (7.0)
18 (5.5)
13 (4.0)
8 (2.4)
NA
NA
2 (51)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
88 (20.7)
2 (51)
36 (11.0)
31 (9.4)
26 (7.9)
21 (8.4)
18 (4.8)
11 (3.4)
2 - 1/2 (84)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
56 (17.1)
55 (18.8)
54 (18.5)
53 (8.2)
52 (15.8)
52 (15.8)
(76)
disk
one
*See
notes
on next
Type
80,000
2 Pipe or 2-In.
Concentric
(51)
1-1/2
2 Pipe or 2-In.
Concentric
(51)
2 Pipe or 3-In.
Concentric
(76)
(38)
2 (51)
3
(38)
(76)
one
diskl-
Termination
NUMBER OF 90 ° ELBOWS
Pipe Dia
In, (ram)*
Type
60,000
2 Pipe or 2-In.
Concentric
(51)
1-1/2
80,000
2 Pipe or 2-In.
Concentric
(51)
1-1/2
2 Pipe or 2-In.
Concentric
(51)
2 Pipe or 3-In.
Concentric
(76)
120,000
NUMBER OF 90 ° ELBOWS
Pipe Dia
In, (ram)*
60,000
100,000
1
59 (18.0)
3
1-1/2
to 1829)$
NUMBER OF 90 ° ELBOWS
6
(51)
(BTUH)
NA
61 (18.6)
17 (5.2)
2 Pipe or 2-In.
Concentric
UNIT SiZE
NA
61 (18.6)
5
(51)
120,000
NA
61 (18.6)
22 (8.7)
2 Pipe or 2-In.
Concentric
100,000
12 (3.7)
62 (18.9)
4
1-1/2
to 1524)$
26 (7.9)
62 (18.9)
27 (8.2)
(51)
(BTUH)
31 (9.4)
63 (19.2)
3
(38)
diskl-
ALTITUDE
15 (4.6)
70 (21.3)
32 (9.8)
2 Pipe or 2-In.
Concentric
Termination
20 (6.1)
70 (21.3)
37 (11.2)
80,000
3
25 (7.6)
70 (21.3)
42 (12.8)
60,000
2 Pipe or 3-In.
Concentric
30 (9.1)
70 (21.3)
2
1-1/2
UNIT SIZE
1
Pipe Dia
In, (ram)*
Type
(51)
120,000
(38)
2 - 1/2 (84)
2 Pipe or 2-In.
Concentric
100,000
(38)
2 (51)
to 4000
(914 to 1219)
2
45 (13.7)
2 Pipe or 2-In.
Concentric
100,000
NUMBER OF 90 ° ELBOWS
Pipe Dia
In, (ram)*
60,000
120,000
3001
Termination
to 3000
(610 to 914)
(38)
2 - 1/2 (84)
3 (76)
(BTUH)
(38)
2 (51)
2-1/2
UNIT SIZE
NUMBER OF 90 ° ELBOWS
50 (15.2)
80,000
0 to 2000
ALTITUDE
- Ft (M)
Only)
1-1/2
120,000
Pipe Length
Pipe Dia
In, (ram)*
Type
(0 to 610)
Allowable
(38)
2 (51)
(38)
2 (51)
1
2
3
4
5
6
37 (11.3)
32 (9.8)
27 (8.2)
22 (8.7)
17 (5.2)
12 (3.7)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
17 (5.2)
12 (3.7)
7 (2.1)
NA
NA
70 (21.3)
70 (21.3)
70 (21.3)
88 (20.7)
83 (19.2)
22
(6.7)
70 (21.3)
2 (51)
33 (10)
28 (8.5)
23 (7.0)
18 (5.5)
13 (4.0)
8 (2.4)
2 - 1/2 (84)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
70 (21.3)
53 (16.2)
52 (15.8)
50 (15.2)
49 (14.9)
48 (14.6)
47 (14.3)
3
(76)
disk1-
one
page.
41
Table 7 -- Maximum Allowable Pipe Length
ALTITUDE
UNIT
SIZE
(BTUH)
80,000
6001 to 7000
80,000
Direct Vent (2-Pipe Only)
Termination
Pipe Dia
Type
In. (ram)*
2 Pipe or 2-In. (51)
Concentric
2 Pipe or 2-In.
Concentric
(51)
2 Pipe or 2-In.
Concentric
(51)
2 Pipe or 3-In.
Concentric
(78)
(1829 to 2134)$
100,000
120,000
ALTITUDE
UNIT
SIZE
(2134 to 2438):[:
(2438 to 2743)$
(2743 to 3048)$
4
5
6
(38)
35 (10.7)
30 (9.1)
25 (7.8)
20 (6.1)
15 (4.8)
10 (3.0)
2 (51)
1-1/2 (38)
70 (21.3)
20 (6.1)
70 (21.3)
15 (4.8)
68 (20.7)
10 (3.0)
87 (20.4)
5 (1.5)
84 (19.5)
NA
2 (51)
70 (21.3)
70 (21.3)
88 (20.7)
87 (20.4)
86 (20.1)
NA
62
(18.9)
2 (51)
31 (9.4)
26 (7.9)
21 (8.4)
18 (4.9)
11 (3.4)
6 (1.8)
2 - 1/2 (64)
70 (21.3)
70 (21.3)
88 (20.7)
87 (20.4)
68 (20.1)
84 (19.5)
3 (76) one disk1-
49 (14.9)
48 (14.6)
47 (14.3)
45 (13.7)
44 (13.4)
43 (13.1)
Pipe
NUMBER
Dia
57 (17.4)
OF 90 ° ELBOWS
4
5
6
80,000
27 (8.2)
85 (19.8)
22 (8.7)
83 (19.2)
17 (5.2)
82 (18.9)
12 (3.7)
60 (18.3)
7 (2.1)
59 (18.0)
80,000
2 Pipe or 2-In.
Concentric
(51)
1-1/2 (38)
2 (51)
18 (5.5)
68 (20.1)
13 (4.0)
85 (19.8)
8 (2.4)
83 (19.2)
NA
82 (18.9)
NA
57 (17.4)
NA
52 (15.8)
100,000
2 Pipe or 2-In.
Concentric
(51)
2 Pipe or 3-In.
Concentric
(78)
UNIT
SIZE
Type
In. (ram)*
Termination
1
2
3
2 (51)
29 (8.8)
24 (7.3)
19 (5.8)
14 (4.3)
9 (2.7)
NA
2 - 1/2 (64)
86 (20.1)
85 (19.8)
83 (19.2)
82 (18.9)
60 (18.3)
59 (18.0)
3 (76) one disk1-
48 (14.0)
44 (13.4)
43 (13.1)
41 (12.5)
40 (12.2)
38 (11.6)
Pipe
NUMBER
Dia
OF 90 ° ELBOWS
1
2
3
4
5
6
60,000
2 Pipe or 2-In.
Concentric
(51)
1-1/2 (38)
2 (51)
30 (9.1)
82 (18.9)
25 (7.6)
80 (17.8)
20 (8.1)
58 (17.7)
15 (4.6)
56 (17.1)
10 (3.0)
55 (18.8)
5 (1.5)
53 (18.2)
80,000
2 Pipe or 2-In.
Concentric
(51)
1-1/2 (38)
2 (51)
17 (5.2)
82 (18.9)
12 (3.1)
80 (18.3)
7 (2.1)
58 (17.7)
NA
56 (17.1)
NA
51 (15.5)
NA
48 (14.0)
100,000
2 Pipe or 2-In.
Concentric
(51)
2 Pipe or 3-In.
Concentric
(78)
UNIT
SiZE
Type
In. (ram)*
Termination
2 (51)
27 (8.2)
22 (6.7)
17 (5.2)
12 (3.7)
7 (2.1)
NA
2 - 1/2 (64)
82 (18.9)
80 (18.3)
58 (17.7)
56 (17.1)
55 (18.8)
53 (18.2)
3 (76) one disk1-
43 (13.1)
41 (12.5)
39/11.9)
37 (11.3)
35 (10.7)
34 (10.4)
Pipe
NUMBER
Dia
OF 90 ° ELBOWS
1
2
3
4
5
6
60,000
2 Pipe or 2-In.
Concentric
(51)
1-1/2 (38)
2 (51)
27 (8.2)
57 (17.4)
22 (8.7)
55 (18.8)
17 (5.2)
53 (18.2)
12 (3.7)
51 (15.5)
7 (2.1)
49 (14.9)
NA
47 (14.3)
80,000
2 Pipe or 2-In.
Concentric
(51)
1-1/2 (38)
2 (51)
15 (4.6)
57 (17.4)
10 (3.0)
55 (18.8)
5 (1.5)
53 (18.2)
NA
51 (15.5)
NA
48 (14.0)
NA
41 (12.5)
100,000
2 Pipe or 2-In.
Concentric
(51)
2 Pipe or 3-In.
Concentric
(78)
(BTUH)
9001 to 10000
3
32 (9.8)
68 (20.1)
120,000
ALTITUDE
2
1-1/2 (38)
2 (51)
(BTUH)
800! to 9000
1
(51)
120,000
ALTITUDE
NUMBER OF 90 ° ELBOWS
2 Pipe or 2-In.
Concentric
(BTUH)
7001 to 8000
Termination
1-1/2
- Ft (M) (Continued)
120,000
Type
In. (ram)*
2 (51)
24 (7.3)
19 (5.8)
14 (4.3)
9 (2.7)
NA
NA
2 - 1/2 (64)
57 (17.4
55 (18.8)
53 (18.2)
51 (15.5)
49 (14.9)
47 (14.3)
3 (76) one diskl-
39 (11.9)
37 (11.3)
35 (10.7)
33 (10.1)
31 (9.5)
29 (8.8)
Disk usage-Unless
otherwise stated use perforated disk as! embly (factory-sup
parts bag).
Wide radius elbow.
Vent sizing for Canadian installations over 4500 ft. (1370M) above sea level are subject to acceptance by the local authorities having jurisdiction.
NA-Not Allowed; pressure switch will not make.
NOTES:
1. Do not use pipe size greater than those specified in table or incomplete combustion, flame disturbance, or flame sense lockout may occur.
2. Size both the combustion -air and vent pipe independently, determine the smallest diameter allowed by the table for each pipe, then use the larger diameter for both pipes.
3. Assume two 45 ° elbows equal one 90 ° elbow. Long radius elbows are desirable and may be required in some cases.
4. Elbows and pipe sections within the furnace casing and at the vent termination should not be included in vent length or elbow count.
5. The minimum pipe length is 5 ft. (1.5M) for all applications.
42
Table 8 - Vent Termination Kit for Direct Vent/2-Pipe System
DIRECT VENT (2-PIPE) TERMINATION
KIT
TERMINATION
SYSTEM
DIAM. OF COMBUSTION AIR AND VENT
PIPES - IN (mm)
2-in. (51 mm) Concentric
Vent Kit
Single Penetration of Wall or Roof
3-in. (76 ram)Concentric
Vent Kit
Single Penetration of Wall or Roof
2-in. (51 ram)Termination
Bracket
Kit
2- Pipe Termination
System
3-in. (76 ram) Termination
Bracket
Kit
2-Pipe
System
Multi-venting
Termination
and Vent Terminations
1, 1-1/2,
2, or 2-1/2
2-1/2,
(25, 38, 51,64 mm)
3 or 4 (64, 76, 102 mm)
1, 1- 1/2 or 2 (25, 38, 51 mm)
2-1/2,
3 or 4 (64, 76, 102 mm)
Application
When 2 or more 58MVC Furnaces are vented near each other,
each furnace must be individually vented. NEVER common vent
or breach vent 58MVC furnaces,
/
The furnace, A/C,
drained
together.
and humidifier drains may be combined
and
The A/C drain
must have
an external,
field-supplied
trap prior to the furnace drain connection.
All
drain
connections
(furnace,
A/C,
or humidifier)
nmst be
terminated into an open or vented drain as close to the respective
\
equipment
equipment's
as possible
drain.
to
to
prevent
siphoning
of
the
CONDENSATE
PiPE FOR
A/C OR
HUMIDIFIER
OPEN
STAND y
DRAIN
WIRE TIE4
TE
HEAT TAPE_
(3WRAPS
MINIMUM)_
A93036
Fig. 46 - Condensate
A94054
Fig. 45 - Example
CONDENSATE
Tape
See Fig. 45 for example of possible field drain attachment
l/2-in.
CPVC or PVC tee for vent and A/C or humidifier
connection.
DRAIN
Condensate
trap is shipped
installed in the blower
shelf
factory connected
for UPFLOW
applications.
Condensate
must
be
RELOCATED
for
use
in
DOWNFLOW
using
drain
Outdoor draining of the furnace is permissible
if allowed by local
codes. Caution
should be taken when freezing
ambient may
and
trap
and
freeze drain pipe and prohibit
draining.
applications.
Condensate
trap MUST
An external
trap is not required
be used for all applications.
to this condensate
trap.
The
connection
field
Heat
of Field Drain Attachment
General
HORIZONTAL
Trap
drain
coupling) is sized for l/2-in.
tube connection.
when
connecting
(condensate
CPVC,
l/2-in.
trap
the field drain
or
drain
PVC, or 5/8-in.
PERSONAL
Failure to follow
iniury or death.
tube
ID
schedule
HAZARD
this warning
could
result
in personal
Caution should be taken to prevent draining where slippery
conditions
may
cause
personal
iniuries.
Excessive
condensate
draining
may cause saturated
soil conditions
Drain pipe and fittings must conform
to ANSI standards
and
ASTM D1785, D2466, or D2846. CPVC or PVC cement must
conform
to ASTM
D2564 or F493. Primer nmst conform
to
ASTM F656. In Canada, use CSA or ULC certified
CPVC or PVC drain pipe, fittings, and cement.
INJURY
which
may result in damage
to plants.
40
Condensate
Drain Protection
When a condensate
pump is required, select a pump which is
approved
for
condensing
furnace
applications.
To avoid
condensate
spillage, select a pump with an overflow switch.
Freezing
Furnace
3.2 to
or equivalent 3 to 6 watt per ft. (.3M) at 120v and 40°F (4.4 ° C)
self-regulating,
shielded,
and
waterproof
heat
tape.
See
Installation
Instructions
supplied
with accessory
or heat tape
manufacturer's
recommendations.
condensate
4.5. Due
condensate
pH
local authorities
filter may be desired. Check
if a pH neutralizer is required.
left in condensate
trap and drain
line may
cause cracks, and possible water damage may occur. If freeze
protection is required, use condensate
freeze protection
accessory
is mildly acidic, typically in the pH range of
to corrosive
nature
of this condensate,
a
neutralizing
to determine
condensate
with
43
1. Fold heat tape in half and wrap on itself 3 times.
continuous fan airflow or low-cooling airflow to be adjusted. To
set desired continuous fan airflow or low-cooling airflow:
1. Remove main furnace door and blower access panel.
2. Locate heat tape between sides of condensate trap back.
(See Fig. 46.)
3. Use wire ties to secure heat tape in place. Wire ties can be
positioned in notches of condensate trap sides. (See Fig.
46.)
4. Wrap field drain pipe with remaining heat tape, approximately 1 wrap per ft. (.3M).
5. When using field-supplied heat tape, follow heat tape
manufacturer's
instructions for all other installation
guidelines.
START-UP,
ADJUSTMENT
CHECK
AND
2. Locate CF setup switches on furnace control. (See Fig.
33.)
3. Determine desired continuous fan airflow or low-cooling
airflow.
4. Use Fig. 47 or wiring schematic to determine proper setup
position of CF switches. (See Fig. 48 and Fig. 49.)
5. Replace main furnace door and blower access panel.
SAFETY
AIR CONDITIONING
(A/C) OR CONTINUOUS-FAN
AIRFLOW SELECTION CHART
Step 1 -- General
g
BASED ON 350 CFM/TON
1. Furnace must have a 115-v power supply properly connected and grounded.
(CF)
(SETUP SWITCH SW1-5 OFF)
SETUP SWITCH SW3 POSITIONS
MODEL
NOTE: Proper polarity must be maintained for 115-v wiring. If
polarity is incorrect, control status indicator light flashes rapidly
and furnace does not operate.
mll:_co
mll:_co
060, 3.5T080
m_-'-i_
DEF.
5252
700
875
10501
1225
1225
5T080,
DEF.
7002
875
1050
1225
1400
1750_
1750
DEF.
700
8752
1050
1225
1400
17501
2100
2. Thermostat wire connections at terminals R, W/W1, G,
and Y/Y2 must be made at 24-v terminal block on furnace
control.
100
120
mll:_o,
BASED ON 400 CFM/TON
3. Natural gas service pressure must not exceed 0.5 psig (14in. wc), but must be no less than 0.16 psig (4.5-in. wc).
4. Blower access panel must be in place to complete 115-v
electrical circuit to furnace.
ml---l_
mr,,-l_
(SETUP SWITCH SWl-5
mr-leo
mr,,-l¢_
1225
ON)
SETUP SWITCH SW3 POSITIONS
MODEL
o,_..,,_
mi._i_
ml,--i_
_l--ic,_
°E::a_. %--,,,., q,---,,_
ml'--i¢..,o
ml[_lc,:
mr--i_,
_l'--io_
mr--ioj
060, 3.5T080
DEF.
6002
800
1000
1200_
1400
1400
1400
5T080,
DEF.
8002
1000
1200
1400
1600
2000_
2000
DEF.
800
10002
1200
1400
1600
2000_
2100
100
120
DEFAULT A/C AIRFLOW WHEN A/C SWITCHES ARE IN OFF POSITION
DEFAULT CONT. FAN AIRFLOW WHEN CF SWITCHES ARE IN OFF POSITION
SWITCH POSITIONS ARE ALSO SHOWN ON FURNACE WIRING DIAGRAM
UNIT MAY NOT OPERATE
Failure to follow this caution may result in intermittent unit
operation or ped\,rmance satisfaction.
These furnaces are equipped with a manual reset limit
switch in burner box. This switch opens and shuts off
power to the gas valve if an overheat condition (flame
rollout) occurs in burner enclosure. Correct inadequate
combustion-air
supply or improper venting condition
before resetting switch. DO NOT jumper this switch.
A07424
Fig. 47 - A/C or CF Airflow Selection Chart Based on 350
and 400 CFM/Ton
Setup
Switches
(SW1)
The furnace control has 8 setup switches that may be set to meet
the application
requirements.
To set these setup switches for the
Before operating furnace, check flame rollout manual reset switch
for continuity. If necessary, press button to reset switch.
Step 2 -- Select
Setup
Switch
Air Conditioning
(A/C) Setup Switches
@propriate
Positions
main furnace
2. Locate setup switches
3. See Table
Fig. 49.)
The air conditioning setup switches are used to match furnace
airflow to cooling unit used.
4. Replace
To set the desired cooling airflow:
1. Remove main furnace door and blower access panel.
NOTE:
door and blower
on furnace
9 for setup switch
main furnace
If a bypass
(Low Heat
compensates
2. Locate A/C setup switches on furnace control. (See Fig.
33.)
3. Determine air conditioning tonnage used.
4. Use Fig. 47 or wiring schematic to determine proper setup
position of A/C switches. (See Fig. 48 and Fig. 49.)
NOTE: Excessive airflow caused by improper A/C switch setup
may cause condensate blow-off in cooling mode.
(See Fig. 33.)
description.
door and blower
humidifier
access panel.
control.
is used,
(See Fig. 48 and
access
setup
panel.
switch
SW1-3
Rise Adjust)
should
be in ON position.
This
for the increased
temperature
in return air resulting
from bypass.
NOTE:
If
automatically
modulating
compensates
Additional
Setup
The furnace
control
Switches
dampers
are
for modulating
used,
blower
motor
dampers.
(SW4)
has 3 additional
setup switches
labeled
SW4.
(See Fig. 33.) Setup switch SW4-2
can be used to lock the
furnace into medium heat. When setup switch SW4-2 is ON the
5. Replace main furnace door and blower access panel.
NOTE: EAC-1 terminal is energized whenever blower operates.
HUM terminal is only energized when blower is energized in
heating.
Continuous
requirement:
1. Remove
furnace will remain at medium heat until W/W1 is de-energized
to end a heating cycle or when both W/W1 and W2 are energized.
When both W/W1 and W2 are energized the furnace will run at
high heat. The other 2 setup switches are currently not used for
anything. When setup switch SW4-2 is ON it will over ride setup
Fan (CF) Setup Switches
The CF setup switches are used to select desired airflow when
thermostat is in continuous fan mode or to select low-cooling
airflow for two-speed cooling units. This setup feature allows
switch SW1-2
1. Remove
44
if it is ON. To activate
main furnace
setup switch SW4-2:
door and blower
access panel.
2.Locate
setup
switch
SW4
on furnace
control.
(See
Fig.
33.)
3. See Table 5 for setup switch
Fig. 49.)
4. Replace
main Nrnace
Prime Condensate
UNIT
Trap
OPERATION
description.
door and blower
(See Fig. 40 and
access
panel.
with Water
HAZARD
Failure to follow this caution may result in internfittent
operation or performance
satisfaction.
unit
Condensate
trap must be PRIMED or proper draining may
not occur. The condensate
trap has two internal chambers
which can ONLY
be primed by pouring water into the
inducer drain side of condensate
trap.
A04001
Fig. 48 - Example
45
of Setup Switch
in Off Position
TO 11SVAC [INN_
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8
A99118
Fig. 50 - Inducer
Housing
Drain
Table
SETUP SWITCH
NO.
SW1 - 1
SW1-2
SW1-3
SW1-4
SW1-5
SW1-6
A01050
1hbe
Fig. 51 - Filling
9 - Furnace
Setup
SWITCH NAME
NORMAL
POSITION
Status Code Recovery
OFF
Low Heat Only
(Adaptive Heat Mode when
OFF)
OFF
Low/Medium
Heat Rise Adjust
Comfort/Efficiency
ment
Adjust-
CFM per ton adjust
Component
Self Test
OFF
ON
OFF
OFF
SW1-7
and SW1-8
Blower OFF delay
ON or OFF
SW4-2
Medium Heat Only (Adaptive
Heat Mode
when OFF)
OFF
Switch
Trap
Description
DESCRIPTION
OF USE
Turn ON to retrieve up to 7 stored status codes for troubleshooting
assistance when R thermostat lead is disconnected.
When SW1-2 and SW4-2 are OFF allows step-modulating
operation with a single stage thermostat. Turn ON when using 2 stage
thermostat to allow Low Heat operation when R to W/W1 closes and
High Heat operation when R to W/W1 and W2 close.
Turn ON to increase Low and Medium Heat airflow by 18 percent.
This compensates for increased return air temperature caused with
bypass humidifier. This also increases the Low and Medium Heat
inducer speed 15 percent
Turn ON to decrease Low Heat airflow 9 percent,
Medium Heat airflow 7 percent,
and High Heat airflow 15 percent for maximum comfort.
Turn ON for 400 CFM per ton. Turn OFF for 350 CFM per ton.
Turn ON to initiate Component Self Test for troubleshooting
assistance when R thermostat lead is disconnected. Turn OFF
when Self Test is completed.
Blower Off Delay time.
See Table 6.
When SW1-2 and SW4-2 are OFF allows step-modulating
operation with a single stage thermostat. Turn ON when using 2 stage
thermostat to allow Medium Heat operation when R to W/W1 closes
and High Heat operation when R to W/W1 and W2 close.
4. Pour 1 quart of water into flmnel/tube. Water should run
through inducer housing, overfill condensate trap, and
flow into open field drain. (See Fig. 51.)
1. Remove upper inducer housing drain connection cap. (See
Fig. 500
2. Connect field-supplied 1/2-in. ID tube to upper inducer
housing drain connection.
3. Insert field-supplied
Condensate
flmnel into tube.
47
Purge Gas Lines
The furnace
If not previously done, purge the lines after all connections have
been made and check for leaks.
furnace
minute
furnace
will start up in either
medium-,
or high-heat.
medium-heat
on-time (from 0 to 16 minutes)
before switching to high heat.
FIRE
AND EXPLOSION
If the power is interrupted,
furnace control
CPU will
HAZARD
Failure to follow this warning could
explosion, personal iniury, or death.
result in a fire,
low-heat
for 15 minutes
the thermostat continues
Step 3 -- Sequence
The wall thermostat
for 1
The
and
is permitted
the stored history is erased and the
select medium-heat
for 1 minute,
of the thermostat
performs
pressure
MPS are open, then de-energizes
contact.
as long as
selection is
cycle times.
"calls for heat", closing
The furnace
control CPU
low-heat
and medium-heat
of Operation
which
and then switch to high-heat,
to call for heat. Subsequent
based on stored history
Never purge a gas line into a combustion chamber. Never
test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for the detection
of leaks to check all connections.
The
will operate in low-heat
after starting and operating
at medium-heat
before transitioning
to low-heat.
control
CPU determines
the combined
low-heat
the R to W circuit.
a self-check,
verifies
switch contacts LPS
the HPSR
the
and
relay to close the NC
1. Inducer Prepurge Period - The furnace control CPU turns
on inducer motor IDM and slowly increases the inducer
UNIT OPERATION
motor
closes
HAZARD
inducer
speed. After the low-heat
pressure
switch LPS
the furnace control CPU continues to increase the
motor
speed
until
Failure to follow this caution may result in intermittent unit
operation.
switch
switch
Furnace control must be grounded for proper operation, or
control will lock out. Control is grounded through
green/yellow wire routed to gas valve and burner box
screw.
ducer motor RPM is noted
and a 25-second
prepurge
pressure
by the furnace
period begins.
control CPU,
The RPM is
erate the inducer motor during medium-heat
prepurge, the
first minute of medium-heat
mode, and low-heat
mode.
NOTE:
The heat cycle can start in either high-
If a high-heat
continue
to
medium-heat
medium-heat
cycle
is initiated,
increase
the
pressure
to evaluate
the furnace
inducer
switch
pressure
switch
CPU
will
speed
after
MPS
the
closes.
When
throttling
valve
the
TV
is
is noted by the furnace control
period begins. The RPM is used
vent system resistance.
determine
the required
RPM
motor in high-heat
pre-purge,
or medium-heat.
control
motor
closes,
energized,
inducer motor RPM
CPU, and a 25-second
prepurge
This evaluation
is then used to
necessary
to operate
and high-heat
mode.
the inducer
2. Igniter Warm-Up
-- At the end of the prepurge period,
the Hot-Surface
Igniter HSI is energized for a 17-second
igniter warm-up
period.
installed for power to be conducted
interlock switch ILK to the furnace
TRAN, inducer motor IDM, blower
igniter HSI, throttling valve TV, and
and Steo-Modulatin_
medium-heat
the medium-heat
pressure
valve TV is energized,
in-
used to evaluate vent system resistance. This evaluation
is
then used to determine the required RPM necessary to op-
Using the schematic diagram (See Fig. 48), follow the sequence
of operation through the different modes. Read and follow the
wiring diagram very carefully. ! !
NOTE:
If a power interruption occurs during a call for heat
(W/W1 or W/Wl-and-W2),
the control will start a 90-second
blower-only ON period two seconds after power is restored, if
the thermostat is still calling for gas heating. The amber LED
light will flash code 12 during the 90-second period, after which
the LED will be ON continuous, as long as no faults are detected.
After the 90-second period, the furnace will respond to the
thermostat normally.
The blower door nmst be
through the blower door
control CPU, transformer
motor BLWM, hot surface
gas valve GV.
Sin_le-Sta_e Thermostat
(Adaptive Mode)
the
MPS closes. When
MPS closes, throttling
3. Trial-For-Ignition
Sequence -- When the igniter warmup period is completed
the main gas valve relay contact
GVR
Heatin_
closes
to energize
the gas valve
solenoid
GV-M.
The gas valve solenoid
GV-M permits gas flow to the
burners where it is ignited. Five seconds after the GVR
closes, a 2- second Flame-Proving
period begins. The
See Fig. 29 or Fig. 59 for thermostat connections.
NOTE: Low-heat only switch SWl-2 selects the low-heat only
operation mode when ON. Medium-heat only switch SW4-2
selects medium-heat only operation mode when ON. If both
switches are ON the furnace control will default to medium-heat.
If either or both switches are ON the furnace control will operate
at two-stages only as referenced in Section 2 below. If both
switches are OFF the furnace control will operate in the adaptive
heating mode in response to a call for heat. (See Fig. 33.) When
the W2 thermostat terminal is energized it will always cause
high-heat operation as long as the R to W circuit is closed,
regardless of the setting of the low-heat or medium-heat only
switches.
HSI igniter will remain energized until flame is sensed
until the 2-second
flame proving period begins.
If the furnace control
high-heat
gas valve
the high-heat
4. Flame-Proving
pressure
--
or
CPU selects high-heat
operation, the
solenoid
GV-HI is energized when
switch HPS closes.
When
the burner flame
is proved
at the
flame-proving
sensor electrode FSE, the furnace control
CPU begins the blower-ON
delay period and continues to
hold the gas valve GV-M open. If the burner flame is not
proved within two seconds, the furnace control CPU will
close the gas valve GV-M,
and the furnace control CPU
will repeat the ignition sequence for up to three more Trials-For-Ignition
before going to Ignition-Lockout.
Lock-
This furnace can operate as a step-modulating furnace with a
single-stage thermostat because the furnace control CPU includes
a programmed adaptive sequence of controlled operation, which
selects low-heat, medium-heat, or high-heat operation. This
selection is based upon the stored history of the length of
previous gas-heating periods of the single-stage thermostat.
out will be reset
automatically
after three
hours,
by mo-
mentarily interrupting
115 vac power to the furnace, or by
interrupting
24 vac power at SEC1 or SEC2 to the furnace
control CPU (not at W/Wl, G, R, etc.).
If flame is proved when flame should not be present, the
furnace control CPU will lock out of Gas-Heating
mode
48
andoperate
the
inducer
flame is no longer
5. Inducer
Speed
Change
heat, the furnace
motor
IDM
at full
speed
until
The furnace
to medium-
proved.
--
control
If the cycle
CPU
starts
reduces
cuit is closed when
in medium
the inducer
control CPU will not switch from high-heat
or low-heat
while the thermostat R to W cir-
speed
8. Blower-Off
using a single-stage
Delay
--
When
thermostat.
the thermostat
is satisfied,
slightly after flame sense. If cycle starts in high-heat,
the
furnace control
CPU increases
the inducer
speed after
flame sense. The reduction
in speed in medium-heat
is to
the R to W circuit is opened, de-energizing
the gas valve
GV-M, stopping gas flow to the burners, and de-energizing the throttling valve TV, and humidifier terminal HUM.
optimize
The inducer
motor
15-second
post-purge
combustion
for maximum
6. Blower-On
delay
--
blower-ON
follows:
delay
for medium-heat
efficiency.
If the burner
flame
is proven
and high-heat
the
is
or
High-heat
is
--
35 seconds
after the gas valve
and air cleaner terminal EAC-I
will remain energized
at
low-heat
airflow or transition to low-heat
airflow for 90,
are as
Medium-heat
-- 60 seconds after the gas valve GV-M
opened the blower motor BLWM is turned ON at lowmedium-heat
airflow.
GV-M
120,
150,
or
180
Two-Stage
Thermostat
tronic air cleaner terminal
main energized throughout
ON to select
NOTE:
and re-
7. Switching
from Mediumto Low-Heat
-- If the furnace control switches from medium-heat
to low-heat,
the
furnace control will turn the blower ON at low-heat
air-
heat, the furnace
control
--
MPS closes. When the medium-heat
closes, the throttling valve solenoid
and
minute
necessary
to operate
heat and high-heat
mode.
transition
to medium-heat
furnace
heat.
control
Switching
from
the inducer
Low-
to High-Heat
control CPU switches from low-heat
nace control CPU will de-energize
close the NC contact and slowly
tor speed until the medium-heat
closes.
closes,
--
switching
before
from high-
1. Switching
must be
in response
to
the thermostat
R
high-heat
operation,
only switch.
transitioning
or high-heat.
and operating
The
for 1
to low-heat.
closing
the R to WI circuit
then de-energizes
the HPSR
relay
to
to low-heat.
from
High-
to Low-Heat
-- If the thermostat
R to W2 circuit opens, and the R to Wl circuit remains
closed, the furnace control CPU will gradually
decrease
the inducer motor speed to the required
medium-heat
RPM. When the inducer motor IDM reduces pressure sufficiently, the high heat pressure switch HPS will open and
the high-heat
gas valve solenoid GV-HI will be de-ener-
to medium-
gized. The gas valve solenoid GV-M will remain energized as long as the low-heat
pressure switch LPS remains
If the furnace
to high-heat,
the HPSR
causes
"calls for heat",
SWI-2
mode
Closing
of the low-heat
at medium-heat
Heating
The start up and shut down functions and delays described above
apply to the 2-stage low/high heating mode as well, except for
in medium-
from low-heat
always
LPS and MPS are open,
close the NC contact.
the inswitch
The blower motor BLWM will
airflow five seconds after the
CPU switches
R to WI circuit.
of the setting
at
CPU is
for low-heat
or closing
the R to Wl-and-W2
circuits for
high-heat.
The furnace
control
performs
a self-check,
and
verifies the low-heat
and medium-heat
pressure switch contacts
pressure switch MPS
TV is energized
and
motor
only switch
only operation
circuits
The wall thermostat
the inducer motor RPM is noted by the furnace control
CPU. The RPM is used to evaluate vent system resistance.
This evaluation
is then used to determine
the required
RPM
selection
Low / High
The furnace will start up in either medium-,
furnace will operate in low-heat
after starting
the HPSR
increase
pressure
the thermostat
regardless
If the furto medium-
CPU will de-energize
relay to close the NC contact and slowly
ducer motor speed until the medium-heat
on
connections.
the low-heat
the low-heat
to Wl-and-W2
slowly decrease the inducer motor speed. When the HPSR
relay is energized and the NC contact opens the throttling
valve TV is deenergized
and the gas flow reduces to lowheat rate.
Switching
from Low- to Medium-Heat
nace control CPU switches
from low-heat
In this mode
closing
the HPSR relay to open the NC contact,
(depending
and Two-Stage
See Fig. 58 for thermostat
flow, energize
seconds
blower-OFF
delay switches). The furnace control
factory-set
for a 120-second
blower- OFF delay.
opened the BLWM is turned ON at high-heat
airflow.
Simultaneously,
the humidifier
terminal HUM and elecEAC-I
are energized
the heating cycle.
IDM will remain
energized
for a
period. The blower motor BLWM
the furrelay to
closed. When the inducer motor speed gets within 15% of
the required medium-heat
RPM the furnace control CPU
will start a 5 second blower airflow change delay. After the
increase the inducer mopressure
switch MPS
5 second blower airflow change delay is completed
the
blower airflow will transition
to low-heat
airflow. At this
When the medium-heat
pressure
switch
MPS
the throttling valve solenoid TV is energized
and
point the furnace control CPU will energize the HPSR relay to open the NC contact and slowly decrease the in-
the inducer motor RPM is noted by the furnace control
CPU. The RPM is used to evaluate vent system resistance.
This evaluation
is then used to determine
the required
ducer motor speed to the required low-heat
RPM. When
the HPSR relay is energized and the NC contact opens the
RPM necessary to operate the inducer motor in mediumand high-heat
mode. The blower motor BLWM will trans-
throttling valve TV is de-energized
and the gas flow reduces to low-heat
rate. When the inducer motor IDM re-
ition to high-heat
airflow five seconds after the furnace
control CPU switches from low-heat
to high-heat.
As the
duces pressure
sufficiently,
switch MPS will open.
inducer RPM gradually
increases the high-heat
pressure
switch HPS closes and the gas valve solenoid GV-HI is
Two-Stage
energized.
Switching
See Fig. 58 for thermostat
from
Medium-
to High-Heat
--
Thermostat
and Two-Stage
medium-heat
pressure
Medium/High
Heating
If the fur-
nace control CPU switches from medium-heat
to highheat, the furnace control CPU will gradually
increase the
NOTE:
In this mode
be
to
inducer motor speed to the required high-heat
RPM. The
blower motor BLWM will transition to high-heat
airflow
five seconds after the furnace control CPU switches from
response
medium-heat
to high heat. As the inducer RPM gradually
increases the high-heat
pressure switch HPS closes and
the gas valve solenoid GV-HI is energized.
Switching
from Highto Mediumor Low-Heat
the
ON
select
49
the thermostat
R to Wl-and-W2
operation,
switch.
regardless
for medium-heat
only switch SW4-2
medium-heat
thermostat
The wall thermostat
--
the
to closing
connections.
the medium-heat
"calls for heat",
operation
R to WI
circuits
of the setting
or closing
only
circuit.
always
of the
closing
causes
must
mode
Closing
in
the
high-heat
medium-heat
only
the R to WI circuit
the R to Wl-and-W2
circuits
for
high-heat.
Thefurnace
controlperforms
a self-check,
and
verifies
thelow-heat
andmedium-heat
pressure
switch
contacts
LPSandMPSareopen,
thende-energizes
theHPSR
relayto
close
theNCcontact.
Thestart
upandshutdown
functions
anddelays
described
above
applytothe2-stage
medium/high
heating
mode
aswell,except
forswitching
fromhigh-tomedium-heat.
1.Switching
fromHigh-to Medium-Heat -- If the thermostat
R to W2 circuit opens,
and the R to Wl
circuit re-
mains closed, the furnace control CPU will gradually decrease
the
inducer
motor
speed
to the required
medium-heat
RPM. When the inducer motor IDM reduces
pressure
sufficiently,
the high
heat pressure
switch
HPS will open and the high-heat
gas valve solenoid GVHI will be de-energized.
The gas valve solenoid GV-M
will remain energized
as long as the low-heat
pressure
switch LPS remains closed. When the inducer motor speed
gets within 15% of the required medium-heat
RPM the
furnace control CPU will start a 5 second blower airflow
change
delay.
After
the 5 second
delay is completed
the blower
medium-heat
airflow.
Cooling
blower
airflow
airflow
will
change
transition
to
Mode
The thermostat
"calls for cooling."
2. Single-Speed
Cooling
circuits.
The R to
Y circuit starts the outdoor unit, and the R to G-and-Y/Y2
circuits start the furnace blower motor BLWM on cooling
is based
on the A/C
selection
The electronic
air cleaner ternfinal EAC-1
is energized
with 115 vac when the blower motor BLWM is operating.
When the thermostat
is satisfied, the R to G-and-Y
circuits are opened.
The outdoor
unit will stop, and the fur-
nace blower
motor BLWM will
cooling
airflow
for an additional
Y/Y2 to DHUM
to reduce
seconds. (See Fig. 33.)
3. Single-Stage
Thermostat
aptive Mode)
See Fig. 59 for thermostat
This furnace
single-stage
cooling
off-delay
and Two-Speed
Cooling
to 5
(Ad-
can operate a two-speed
cooling unit with a
thermostat because the furnace control CPU
eration. This selection
the length of previous
thermostat.
The air conditioning
be connected
continue
operating
at
90 seconds.
Jumper
connections.
includes
a programmed
operation, which selects
NOTE:
the
to enable
adaptive sequence of controlled
low-cooling
or high-cooling
opis based
cooling
relay
the adaptive
upon the stored history of
period of the single-stage
disable
cooling
jumper
ACRDJ
nmst
mode in response
to
a call for cooling.
(See Fig. 33.) When in place the furnace
control CPU can turn on the air conditioning
relay ACR to
energize
the
Y/Y2
ternfinal
and
switch
the
outdoor
unit
to
high-cooling.
The furnace
low-
control
or high-cooling.
CPU can start up the cooling
If starting
up in low-cooling,
unit
in either
the furnace
control CPU deternfines
the low-cooling
on-time (from 0 to 20
nfinutes) which is pernfitted before switching to high-cooling.
If the power
is interrupted,
the stored
The electronic air cleaner ternfinal EAC-1 is energized with 115
vac whenever the blower motor BLWM is operating.
When the thermostat is satisfied, the R to G-and-Y circuit are
opened. The outdoor unit stops, and the furnace blower BLWM
and electronic air cleaner ternfinal EAC-1 will remain energized
for an additional 90 seconds. Jumper Y1 to DHUM to reduce the
cooling off-delay to 5 seconds. (See Fig. 33.)
4. Two-Stage Thermostat and Two-Speed Cooling
See Fig. 58 for thermostat connections.
NOTE: The air conditioning relay disable jumper ACRDJ nmst
be disconnected to allow thermostat control of the outdoor unit
See Fig. 29 for thermostat connections.
The thermostat closes the R to G-and-Y
airflow. Cooling airflow
shown in Fig. 47.
low-cooling speed, and the R to G-and-Y1 circuits starts the
furnace blower motor BLWM at low-cooling airflow which is the
true on-board CF selection as shown in Fig. 47.
If the furnace control CPU switches from low-cooling to high
cooling, the furnace control CPU will energize the air
conditioning relay ACR. When the air conditioning relay ACR is
energized the R to Yl-and-Y2
circuits switch the outdoor unit to
high-cooling speed, and the R to G-and-Y1- and-Y/Y2 circuits
transition the furnace blower motor BLWM to high-cooling
airflow. High-cooling
airflow is based on the A/C selection
shown in Fig. 47.
NOTE: When transitioning from low-cooling to high-cooling
the outdoor unit compressor will shut down for 1 nfinute while
the furnace blower motor BLWM transitions to run at
high-cooling airflow.
history
is erased
and the
staging. (See Fig. 33.)
The thermostat closes the R to G-and-Y1 circuits for low cooling
or closes the R to G-and-Yl-and-Y2
circuits for high cooling.
The R to Y1 circuit starts the outdoor unit on low cooling speed,
and the R to G-and-Y1 circuit starts the furnace blower motor
BLWM at low-cooling airflow which is the true on-board CF
selection as shown in Fig. 47. The R to Yl-and-Y2
circuits start
the outdoor unit on high-cooling
speed, and the R to
G-and-Y/Y2 circuits start the furnace blower motor BLWM at
high-cooling airflow. High-cooling airflow is based on the A/C
selection shown in Fig. 47.
The electronic air cleaner ternfinal EAC-1 is energized with 115
vac whenever the blower motor BLWM is operating.
When the thermostat is satisfied, the R to G-and-Y1 or R to
G-and-Yl-and-Y2
circuits are opened. The outdoor unit stops,
and the furnace blower BLWM and electronic air cleaner ternfinal
EAC-1 will remain energized for an additional 90 seconds.
Jumper Y1 to DHUM to reduce the cooling off-delay to 5
seconds. (See Fig. 33.)
Thermidistat Mode
See Fig. 52-55 for thermostat connections.
The dehumidification output, DHUM on the Thermidistat should
be connected to the furnace control thermostat terminal DHUM.
When there is a dehumidify demand, the DHUM input is
activated, which means 24 vac signal is removed from the
DHUM input terminal. In other words, the DHUM input logic is
reversed. The DHUM input is turned ON when no dehumidify
demand exists. Once 24 vac is detected by the furnace control on
the DHUM input, the furnace control operates in Thernfidistat
mode. If the DHUM input is low for more than 48 hours, the
furnace control reverts back to non-Thernfidistat mode.
The cooling operation described above also applies to operation
with a Thernfidistat. The exceptions are listed below:
long as the thermostat
continues to call for cooling. Subsequent
selection is based on stored history of the thermostat cycle times.
1. Low cooling - When the R to G-and-Yl circuit is closed
and there is a demand for dehunfidification, the furnace
blower motor BLWM will drop the blower airflow to 86%
of low cooling airflow which is the true on-board CF selection as shown in Fig. 47.
The wall thermostat "calls for cooling", closing the R to G andY circuits.
The R to Y1 circuit starts the outdoor
unit on
2. High cooling - When the R to G-and Y/Y2 circuit is
closed and there is a demand for dehunfidification, the fur-
furnace control CPU will select low-cooling
for up to 20 nfinutes
and then energize the air conditioning
relay ACR to energize the
Y/Y2 ternfinal and switch the outdoor unit to high-cooling,
as
5O
nace
blower
motor
BLWMwilldroptheblower
airflow
to
86%of high-cooling
airflow.
High-cooling
airflowis
based
ontheA/Cselection
shown
inFig.47.
3.Cooling
off-delay
- When
the"callforcooling"
issatisfiedandthere
isademand
fordehumidification,
thecoolingblower-off
delayisdecreased
from90seconds
to5
Continuous Blower Speed Selection from Thermostat
To select different continuous-blower
airflows from the room
thermostat, momentarily turn off the FAN switch or push button
on the room thermostat for 1-3 seconds after the blower motor
BLWM is operating. The furnace control CPU will shift the
continuous-blower
airflow from the factory setting to the next
highest CF selection airflow as shown in Fig. 47. Momentarily
turning off the FAN switch again at the thermostat will shift the
continuous-blower airflow up one more increment. If you repeat
this procedure enough you will eventually shift the continuous
blower airflow to the lowest CF selection as shown in Fig. 47.
The selection can be changed
as many times as desired and is
stored in the memory to be automatically used following a power
interruption.
Heat Pump
seconds.
Super Dehumidify Mode
Super-Dehumidify
mode can only be entered if the furnace
control is in the Thermidistat mode and there is a demand for
dehumidification. The cooling operation described in item 4.
above also applies to operation with a Thermidistat. The
exceptions are listed below:
1. Low cooling - When the R to Y1 circuit is closed, R to G
circuit is open, and there is a demand for dehumidification,
the furnace blower motor BLWM will drop the blower airflow to 65% of low-cooling airflow for a maximum of 10
minutes each cooling cycle or until the R to G circuit
closes or the demand for dehumidification is satisfied.
Low-cooling airflow is the true on-board CF selection as
shown in Fig. 47.
2, High cooling - When the R to Y/Y2 circuit is closed, R to
G circuit is open, and there is a demand for dehumidification, the furnace blower motor BLWM will drop the
blower airflow to 65% of high-cooling airflow for a maximum of 10 minutes each cooling cycle or until the R to G
circuit closes or the demand for dehumidification is satisfied. High-cooling airflow is based on the A/C selection
shown in Fig. 47.
See Fig. 54-57 for thermostat connections. When installed with
a heat pump, the furnace control automatically changes the timing
sequence to avoid long blower off times during demand defrost
cycles. Whenever W/W1 is energized along with Y1 or Y/Y2, the
furnace control CPU will transition to or bring on the blower
motor BLWM at cooling airflow, low-heat airflow, or the
mid-range airflow, whichever is lowest. The blower motor
BLWM will remain on until the main burners ignite then shut
OFF and remain OFF for 25 seconds before coming back on at
heating airflow. When the W/W1 input signal disappears, the
furnace control begins a normal inducer post-purge period while
changing the blower airflow. If Y/Y2 input is still energized the
furnace control CPU will transition the blower motor BLWM
airflow to cooling airflow. If Y/Y2 input signal disappears and
the Y1 input is still energized the furnace control CPU will
transition the blower motor BLWM to low-cooling airflow. If
both the Y1 and Y/Y2 signals disappear at the same time, the
blower motor BLWM will remain on at low-heat airflow for the
selected blower-OFF
delay period. At the end of the
blower-OFF delay, the blower motor BLWM will shut OFF
unless G is still energized, in which case the blower motor
BLWM will operate at continuous blower airflow.
3. Cooling off-delay - When the "call for cooling" is satisfied and there is a demand for dehumidification, the cooling blower-off delay is decreased from 90 seconds to 5
seconds.
Continuous
Blower Mode
When the R to G circuit is closed by the thermostat, the blower
motor BLWM will operate at continuous blower airflow.
Continuous blower airflow selection is initially based on the CF
selection shown in Fig. 47. Factory default is shown in Fig. 47.
Terminal EAC-1 is energized as long as the blower motor
BLWM is energized.
Component
Test
The furnace features a component test system to help diagnose a
system problem in the case of a component failure. To initiate the
component test procedure, ensure that there are no thermostat
inputs to the control and all time delays have expired. Turn on
setup switch SWl-6. (See Fig. 33)
NOTE: The component test feature will not operate if the control
is receiving any thermostat signals or until all time delays have
expired.
During a call for heat, the furnace control CPU will transition the
blower motor BLWM to continuous blower airflow, low-heat
airflow, or the mid-range airflow, whichever is lowest. The
blower motor BLWM will remain ON until the main burners
ignite then shut OFF and remain OFF for the blower-ON delay
(60 seconds in medium heat, and 35 seconds in high-heat),
allowing the furnace heat exchangers to heat up more quickly,
then restarts at the end of the blower-ON delay period at
low-heat, medium-heat, or high-heat airflow respectively.
The blower motor BLWM will revert to continuous-blower
airflow after the heating cycle is completed. In high-heat, the
furnace control CPU will drop the blower motor BLWM to
low-heat airflow during the selected blower-OFF delay period
before transitioning to continuous-blower
airflow.
When the thermostat "calls for low-cooling", the blower motor
BLWM will operate at low-cooling airflow. When the thermostat
is satisfied, the blower motor BLWM will operate an additional
90 seconds at low-cooling airflow before transitioning back to
continuous-blower airflow.
The component test sequence is as follows:
1. The furnace control CPU turns the inducer motor IDM
ON at medium speed and keeps it ON through step 3.
2. After waiting 15 seconds the furnace control CPU turns
the hot surface igniter ON for 15 seconds, then OFF.
3. The furnace control CPU then turns the blower motor
BLWM ON at mid-range airflow for 15 seconds, then
OFF.
4. After shutting the blower motor BLWM OFF the furnace
control CPU shuts the inducer motor IDM OFF.
NOTE:
The EAC terminals are energized when the blower is
operating.
After the component test is completed , 1 or more status codes
(11, 25, 41, or 42) will flash. See Service Label on blower access
panel or Service/Status Code Instructions for explanation of
status codes.
When the thermostat "calls for high-cooling", the blower motor
BLWM will operate at high cooling airflow. When the thermostat
is satisfied, the blower motor BLWM will operate an additional
90 seconds at high-cooling airflow before transitioning back to
continuous-blower airflow.
NOTE: To repeat component test, turn setup switch SWl-6
OFF and then back ON.
When the R to G circuit is opened, the blower motor BLWM will
continue operating for an additional 5 seconds, if no other
flmction requires blower motor BLWM operation.
51
to
'H4ERMIDISTAT
STEP M©D
FURNACE
SH£RN
S NGLD-SPEED
AIR C©NOtTIONER
DISTAT
8TSP-MOD
?URNACE
$aNGLE SPE_D
_q£AT PUMP
,_2_oTE!.
HEAT
STAGE
1
COOL
STAGE
I
................
H£AT
STAGE
2.......................................
PAN _
24 VAC HOT _
.....................
..............
I
HU:M
(24 ©IP;ER
VAC)
I_._
"....
O{JTDOOR
SEI';SOR
CONNBCSIO
.,
See noes
I 2 4, 6, 7, 9, 10, 1t
_nd _5
See motes 2i 5 7 10 a_d II
A06680
A06678
Fig. 52 - Step-Modulating
Furnace
with Single-Speed
Air
Fig. 54 - Step Modulating
Conditioning
TH£RM: DIS_'AT
4_AiT
STAGE
COOL
STAGE
H_AT
STAGE
COOL
STAGE
2
Pump
STEP, MOD,
_ URNACE
J
'7¢2
TH_RM
TW%_,SP_ED
AR CONOH iONER
Furnace
(Dual
DiS rA'l
with Single-Speed
Heat
Fuel)
srsP_Moo
FURNAC_
TWO-SPEED
HEAT PUMP
t
j ........
.4_
I
.4_
iI
2
AN
24 ",/AC H©*[
OEHUM_D_:Y
24 VAC
CGMM
SENSOR
See r_otes 2 5
8, I0,
i I, a#d
12
A06679
Fig. 53 - Step Modulating
Furnace
Conditioner
with Two-Speed
A06681
Air
Fig. 55 - Step Modulating
Pump
52
Furnace
(Dual
with Two-Speed
Fuel)
Heat
STEP,MOD
DUAL _-UEL
T_ RMOSTAT
FUR:NAC£
Sling8_S_EED
TWOSTAGE
HEAT FUMP
STEP,,MOD_
FURNACE
THERMOSTAT
NOTE11
TWOSPEED
AiR CONDITIONER
).
NOTEi2
Seenet_si,2
"'_]
4, 11 I4 15 ae16
Seenoie_2, _1.an_12
A06682
Fig. 56 - Step Modulating
Furnace
with Single-Speed
A06684
Heat
Fig. 58 - Two-Stage
Pump
DUAL F_Et
fHERMO TAT
Furnace
ST_P.MOD
FURNACE
T¢/,O_BPE_D
HEAl P_J_P
Thermostat
and Two-Speed
SINGLEoSTAGE
THERMOSTAT
with Step Modulating
Air Conditioner
STEP,MOD
FURNACE
TWOoSPEED
AIRCONDITIONER
HUN
See_'_ote
2
A06683
Fig. 57 - Dual
Furnace
Fuel thermostat
and Two-Speed
A06685
with Step-Modulating
Fig. 59 - Single-Stage
Heat Pump
Furnace
53
Thermostat
and Two-Speed
with
Step Modulating
Air Conditioner
NOTE:
Reference
c. Verify furnace model. Table 10 can only be used for model 58MVC Furnaces.
d. Find installation altitude in Table 10.
Fig. 52-59:
1. Heat pump MUST
fuel applications.
have
a high pressure
switch
for dual
2. Refer to outdoor equipment
Installation
Instructions
additional information
and setup procedure.
3. Select the "ZONE"
control.
position
on the two-speed
NOTE: For Canadian altitudes of 2000 to 4500 ft. (609.6 to
1371.6M), use USA. altitudes of 2001 to 3000 ft. (609.6 to
914.4M) in Table 10.
for
heat pump
in all
e. Find closest natural gas heat value and specific gravity
in Table 10.
5. Dip switch No.l on Thermidistat
should be set in OFF position for air conditioner
installations.
This is factory default.
f. Follow heat value and specific gravity lines to point of
intersection to find orifice size and low-, medium-, and
high-heat manifold pressure settings for proper operation.
4. Outdoor Air Temperature
dual fuel applications.
Sensor
must
6. Dip switch No. 1 on Thermidistat
sition for heat pump
be attached
should
be set in ON po-
EXAMPLE:
0 - 2000 ft. (0 - 609.6M)
Heating value = 1050 Btu/cu ft.
installations.
Specific gravity = 0.62
Therefore: Orifice No. 45
7. Dip switch No. 2 on Thermidistat
should be set in OFF
position for single-speed
compressor
operation.
This is
factory
Manifold pressure: 3.8-in. wc for high heat 1.6-in.
heat 0.6-in. wc for low heat
default.
8. Dip switch No. 2 on Thermidistat
sition for two-speed
9. Configuration
be turned
should
compressor
Option
be set in ON pomust
ON in all dual fuel applications.
10. NO connection
should
be made to the furnace
HUM
g. Check and verify burner orifice size in furnace. NEVER
ASSUME
ORIFICE
SIZE; ALWAYS CHECK AND
VERIFY.
ter-
minal when using a Thermidistat.
11. Optional
connection.
If wire is connected
to W2 on fur-
2. Adjust
manifold
pressure
to obtain input rate.
nace control board, either dip switch SWI-2
or SW4-2 on
furnace control should be set in ON position
to allow
Thernaidistat/Thernmstat
to control
Low/High or Medium/High.
furnace
HIGH-HEAT
at 2 stages
ON/OFF
(UNDER
CAP)
BURNER
ENCLOSURE
REFERENCE
TAP
12. Optional connection.
If wire is connected,
ACRDJ jumper
on furnace control should be removed to allow Thermidistat/Thermostat
13. Furnace
to control
nmst control
control
algorithm.
This is internally
INLET
unit staging.
its own staging operation
This is factory
14. The RVS Sensing
15. DO NOT
outdoor
terminal
the
via furnace
default.
"L" should
used to sense defrost
SELECT
wc for medium
* Furnace is shipped with No. 45 orifices. In this example, all main
burner orifices are the correct size and do not need to be changed to
obtain proper input rate.
operation.
No. 10 "Dual Fuel Selection"
altitude
not be connected.
operation.
"FURNACE
_i
INTERFACE"
PRE_SAU_E
or
"BALANCE
POINT" option on the two-speed
heat pump
control board. This is controlled
internally by the Thermidistat/Dual Fuel Thermostat.
16. Dip switch
D on Dual
Fuel
Thermostat
OFF position for single-speed
is factory default.
17. Dip switch
D on Dual
ON position
Step
4 --
Fuel
for two-speed
should
compressor
Thermostat
compressor
be set in
operation.
should
This
be set in
operation.
MEDIUM-HEAT
ADJUSTMENT
(UNDERCAP)
Adjustments
Set Gas Input Rate
Furnace
gas
altitudes
In
input
USA.,
(609.6M)
nmst
(304.8M)
above
In Canada,
Adjust
on
rating
plate
is for
installations
at
LOW-HEAT
ADJUSTMENT
up to 2000 ft. (609.6M).
the
altitudes
level.
rate
the
input
be
reduced
by
for
altitudes
2 percent
above
2000
ft.
for each
1000
ft.
A07280
rating
must
ft. (609.6M)
be derated
to 4500
by
5 percent
ft. (1371.6M)
above
for
Fig. 60 - Redundant
pressure
Furnace input rate must
furnace rating plate.
1. Determine
natural
for correct input.
to obtain input rate.
be within
+2 percent
size and manifold
burner
enclosure
NOTE:
Manifold pressure MUST
burner box cover REMOVED.
rate on
b. Remove
gas orifice
Gas Valve
pressure
regulator
screws for medium-
seal
front.
always be measured
caps
that
and high-heat
conceal
with the
adjustment
gas valve regulators.
(See Fig. 60.)
a. Obtain average
gas supplier.
heat value (at installed
b. Obtain
specific
average
of input
Automatic
sea
a. Remove
manifold
MANIFOLD
J
PRESSURE
TAP
sea level.
the input
of 2000
(UNDERCAP)
rating
gravity
altitude) from local
c. Move setup switch SW4-2
on control
tion. (See Fig. 33.) This keeps furnace
heat operation.
from local gas supplier.
54
center to ON posilocked in medium-
d.Jumper
Rand
W/W1
thermostat
connections
on control
3. Verify natural
to start furnace.
e. Turn
NOTE:
medium-heat
(out) to decrease
increase
NOTE:
adjusting
manifold
manifold
DO NOT
screw
pressure
counterclockwise
or clockwise
pipes,
(in) to
1.3- in. wc or more than 1.7-in.
UNIT
DAMAGE
HAZARD
Failure
life.
to follow
this caution
manifold
wc for natural
pressure
enclosure
gas.
high-altitude
STATES
may result in reduced
orifice
Never
redrill
an orifice.
hole is essential
A burr-free
for proper
flame
g. Jumper
and squarely
b. Reinstall
characteristics.
SW4-2 to OFF position
adjustment.
R and W/WI
and W2 thermostat
connections
3.2-in.
set high-heat
wc or more than 3.8-in.
i. Remove
jumpers
manifold
R to W/WI
j. Wait for blower off-delay
power to furnace.
k. Jumper R and W/WI
to start furnace.
pressure
wc for natural
NOTE:
correct
thermostat
INPUT
ft. (1310.6M).
Fact-
box cover.
altitude.
of gas heating
value
always
be performed
caps
are in place for
of gas used
Consult
local
for calculations
gas utility
is
for altitude
value.
size in furnace.
SIZE. ALWAYS
f. Turn off all other gas appliances
l15-v
g. Move setup switch SW4-2
This keeps furnace locked
on control
1. Wait for the blower to turn ON then check low-heat
AT 4,300
e. Check and verify orifice
ASSUME
THE ORIFICE
AND VERIFY.
gas.
connections
burner
Be sure heating
for your
adjustment
less than
then reset
INSTALLED
and use
d. Obtain average heat value (at altitude) from local gas supplier.
locked
and R to W2.
to finish
(if required).
c. Check that gas valve adjustment
proper input to be clocked.
on
h. Turn high-heat
adjusting screw counterclockwise
(out)
to decrease manifold
pressure or clockwise (in) to increase manifold pressure.
DO NOT
adjustment
NOTE:
Clocking gas input rate MUST
with the burner box cover INSTALLED.
after com-
furnace control. (See Fig. 33.) This keeps furnace
in high-heat
operation.
NOTE:
checking
Furnace Input Rate at Sea Level X Derate Multiplier
or = Furnace Input Rate at Installation Altitude
80,000 X 0.91 = 72,800
(See Fig. 61.)
f. Move setup switch
pleting medium-heat
and vent
when
ine correct input rate for altitude, see example
0.95 as derate multiplier factor.
EXAMPLE:
80,000
BTUH
HIGH-HEAT
NOTE:
If orifice hole appears damaged or it is suspected to have
been redrilled, check orifice hole with a numbered
drill bit of
size.
are in place
At installation
altitudes from 2000 to 4500 ft. (609.6 to
1371.6M), this furnace must be derated 5 percent by an
authorized Gas Conversion
Station or Dealer. To determ-
furnace
FURNACE
aligned
front
gas meter.
combustion-air
At altitudes above 2000 ft. (609.6M),
this furnace has
been approved
for 2 percent derate for each 1000 ft.
(304.8M) above sea level. See Table 11 for derate multiplier factor and example.
CANADA
DO NOT bottom out gas valve regulator adjusting screws.
This can result in unregulated manifold pressure and result
in excess over-fire and heat exchanger failures,
correct
tubing,
gas meter.
a. Calculate
UNITED
less than
gas input rate by clocking
all pressure
and burner
input by clocking
pressure.
set medium-heat
Be sure
NEVER
CHECK
and pilots.
to ON position.
in medium-heat
(See Fig. 33.)
operation.
mani-
fold pressure. It should be between .5 to .6-in. wc. This
setting should not require adjustment
but if it does remove the low-heat adjustment cap (See Fig. 60) and turn
the low-heat
adjusting screw clockwise (in) to decrease
manifold pressure or counterclockwise
(out) to increase
manifold
pressure. You will only have 15 minutes to
make an adjustment if needed. If you need more time then
move setup switch SW1-2 on control center to ON position (See Fig. 33).
NOTE:
DO NOT set low-heat
medium-heat
pressure
manifold
less than
manifold
pressure.
.5-in.
pressure
before
wc or more
than .6-in.
setting
manifold
BURNER
wc for natural
ORIFICE
DO NOT set low-heat
gas.
m. When
correct
manifold
pressures
are obtained,
replace
caps that conceal gas valve adjustment
screws. Main
burner flame should be clear blue, almost transparent.
A93059
(See Fig. 62.)
n. Remove
jumper
setup switch
across R and W/Wl.
SWI-2
If necessary
Fig. 61 - Burner
move
to the OFF position.
55
Orifice
Table
(Tabulated
Data Based
10 - Orifice
on 20,000
BTUH
Derated
ALTITUDE
AVG. GAS
RANGE
HEAT VALUE
AT ALTITUDE
ff lml
Size* and Manifold
Pressures
High
Btuh Med-Heat
Heat / 13,000
2% / 1000 Ft. (304.8M)
Above
SPECIFIC
0.58
Orifice
for Gas Input
Orifice
per Burner.
Sea Level)
GRAVITY
OF NATURAL
0.60
Mnfld Press
Rate
/ 8,000 Btuh Low-Heat
GAS
0.62
Mnfld Press
Orifice
0.64
Mnfld Press
Orifice
No.
Mnfld Press
(Btu/cu ft I
900
No.
43
Hiclh/Med/Low
3.5 /1.5 /0.55
No.
43
Hiclh/Med/Low
3.6 / 1.5 /0.60
No.
43
Hiclh/Med/Low
3.8 /1.6 /0.60
42
Hiclh/Med/Low
3.2 /1.3 /0.50
0
925
44
3.8
/1.6
/0.60
43
3.5
/ 1.5 /0.55
43
3.6
/1.5
/0.55
43
3.7
/1.6
/0.60
(0)
950
44
3.6
/1.5
/0.60
44
3.8
/ 1.6 /0.60
43
3.4
/1.4
/0.55
43
3.5
/1.5
/0.55
975
44
3.4
/1.5
/0.55
44
3.6
/ 1.5 /0.55
44
3.7
/1.6
/0.60
44
3.8
/1.6
/0.60
to
1000
44
3.3
/1.4
/0.50
44
3.4
/ 1.4 /0.55
44
3.5
/1.5
/0.55
44
3.6
/1.5
/0.60
_..
cn
45
45
3.8
/1.6
/0.60
44
3.2
/ 1.4 /0.50
44
3.3
/1.4
/0.55
44
3.4
/1.5
/0.55
2000
1025
1050
3.6
/1.5
/0.60
45
3.7
/ 1.6 /0.60
45
3.8
/1.6
/0.60
44
3.3
/1.4
/0.50
"_
(610)
1075
45
3.4
/1.4
/0.55
45
3.5
/ 1.5 /0.55
45
3.7
/1.5
/0.60
45
3.8
/1.6
/0.60
1100
45
3.3
/1.4
/0.50
45
3.4
/ 1.4 /0.55
45
3.5
/1.5
/0.55
45
3.6
/1.5
/0.60
U.S.A.
800
43
3.8
/1.6
/0.60
42
3.2
/ 1.4 /0.50
42
3.3
/1.4
/0.55
42
3.5
/1.5
/0.55
2001 (611)
to
825
850
43
43
3.6
/1.5
/0.55
43
3.7
/ 1.6 /0.60
43
3.8
/1.6
/0.60
42
3.2
/1.4
/0.50
3.4
/1.4
/0.55
43
3.5
/ 1.5 /0.55
43
3.6
/1.5
/0.60
43
3.7
/1.6
/0.60
3000 (914)
875
44
3.7
/1.5
/0.60
44
3.8
/ 1.6 /0.60
43
3.4
/1.4
/0.55
43
3.5
/1.5
/0.55
900
44
3.5
/1.5
/0.55
44
3.6
/ 1.5 /0.55
44
3.7
/1.6
/0.60
44
3.8
/1.6
/0.60
44
45
45
3.3
/1.4
/0.50
44
3.4
/ 1.4 /0.55
44
3.5
/1.5
/0.55
44
3.6
/1.5
/0.60
3.7
/1.6
/0.60
44
3.2
/ 1.4 /0.50
44
3.3
/1.4
/0.55
44
3.4
/1.4
/0.55
3.6
/1.5
/0.55
45
3.7
/ 1.6 /0.60
45
3.8
/1.6
/0.60
44
3.2
/1.4
/0.50
/1.4
/0.55
45
3.5
/ 1.5 /0.55
45
3.6
/1.5
/0.60
45
3.7
/1.6
/0.60
_n
Canada
2001 (611)
to
925
950
975
775
43
3.7
/1.6
/0.60
42
3.2
/ 1.3 /0.50
42
3.3
/1.4
/0.55
42
3.4
/1.4
/0.55
3001
800
43
3.5
/1.5
/0.55
43
3.6
/ 1.5 /0.60
43
3.8
/1.6
/0.60
42
3.2
/1.3
/0.50
(915)
825
850
44
44
3.8
/1.6
/0.60
43
3.4
/ 1.4 /0.55
43
3.5
/1.5
/0.55
43
3.7
/1.5
/0.60
3.6
/1.5
/0.55
44
3.7
/ 1.6 /0.60
44
3.8
/1.6
/0.60
43
3.4
/1.5
/0.55
to
875
44
3.4
/1.4
/0.55
44
3.5
/ 1.5 /0.55
44
3.6
/1.5
/0.60
44
3.7
/1.6
/0.60
4000
900
44
3.2
/1.3
/0.50
44
3.3
/ 1.4 /0.55
44
3.4
/1.4
/0.55
44
3.5
/1.5
/0.55
(1219)
925
950
45
45
3.7
/1.5
/0.60
45
3.8
/ 1.6 /0.60
44
3.2
/1.4
/0.50
44
3.3
/1.4
/0.55
3.5
/1.5
/0.55
45
3.6
/ 1.5 /0.55
45
3.7
/1.6
/0.60
45
3.8
/1.6
/0.60
750
43
3.7
/1.6
/0.60
43
3.8
/ 1.6 /0.60
42
3.2
/1.4
/0.50
42
3.3
/1.4
/0.55
4001
775
43
3.5
/1.5
/0.55
43
3.6
/ 1.5 /0.55
43
3.7
/1.6
/0.60
43
3.8
/1.6
/0.60
--_
I_
(1220)
800
825
44
44
3.7
/1.6
/0.60
43
3.4
/ 1.4 /0.55
43
3.5
/1.5
/0.55
43
3.6
/1.5
/0.55
3.5
/1.5
/0.55
44
3.6
/ 1.5 /0.60
44
3.7
/1.6
/0.60
43
3.4
/1.4
/0.55
4
to
850
44
3.3
/1.4
/0.55
44
3.4
/ 1.4 /0.55
44
3.5
/1.5
/0.55
44
3.6
/1.5
/0.60
"_
5000
875
45
3.8
/1.6
/0.60
44
3.2
/ 1.4 /0.50
44
3.3
/1.4
/0.55
44
3.4
/1.5
/0.55
(1524)
900
45
3.6
/1.5
/0.55
45
3.7
/ 1.6 /0.60
45
3.8
/1.6
/0.60
44
3.2
/1.4
/0.50
925
45
3.4
/1.4
/0.55
45
3.5
/ 1.5 /0.55
45
3.6
/1.5
/0.60
45
3.7
/1.6
/0.60
725
43
3.6
/1.5
/0.60
43
3.8
/ 1.6 /0.60
42
3.2
/1.4
/0.50
42
3.3
/1.4
/0.55
5001
750
43
3.4
/1.4
/0.55
43
3.5
/ 1.5 /0.55
43
3.6
/1.5
/0.60
43
3.8
/1.6
/0.60
(1525)
775
800
44
44
3.7
/1.5
/0.60
44
3.8
/ 1.6 /0.60
43
3.4
/1.4
/0.55
43
3.5
/1.5
/0.55
3.4
/1.5
/0.55
44
3.6
/ 1.5 /0.55
44
3.7
/1.6
/0.60
44
3.8
/1.6
/0.60
--_
I_
1
450011372/ 1000
1
45
3.4
I_
4
to
825
44
3.2
/1.4
/0.50
44
3.3
/ 1.4 /0.55
44
3.4
/1.5
/0.55
44
3.6
/1.5
/0.55
"_
6000
850
45
3.7
/1.6
/0.60
45
3.8
/ 1.6 /0.60
44
3.2
/1.4
/0.50
44
3.4
/1.4
/0.55
(1829)
875
45
3.5
/1.5
/0.55
45
3.6
/ 1.5 /0.55
45
3.7
/1.6
/0.60
45
3.8
/1.6
/0.60
900
45
3.3
/1.4
/0.50
45
3.4
/ 1.4 /0.55
45
3.5
/1.5
/0.55
45
3.6
/1.5
/0.60
675
42
3.2
/1.3
/0.50
42
3.3
/ 1.4 /0.55
42
3.4
/1.4
/0.55
42
3.5
/1.5
/0.55
6001
700
43
3.6
/1.5
/0.55
43
3.7
/ 1.6 /0.60
43
3.8
/1.6
/0.60
42
3.3
/1.4
/0.50
--_
I_
(1830)
725
750
44
44
3.8
/1.6
/0.60
43
3.5
/ 1.5 /0.55
43
3.6
/1.5
/0.55
43
3.7
/1.6
/0.60
3.6
/1.5
/0.55
44
3.7
/ 1.6 /0.60
44
3.8
/1.6
/0.60
43
3.5
/1.5
/0.55
4
to
775
44
3.4
/1.4
/0.55
44
3.5
/ 1.5 /0.55
44
3.6
/1.5
/0.55
44
3.7
/1.6
/0.60
"_
7000
800
45
3.8
/1.6
/0.60
44
3.3
/ 1.4 /0.50
44
3.4
/1.4
/0.55
44
3.5
/1.5
/0.55
(2133)
825
850
45
45
3.6
/1.5
/0.55
45
3.7
/ 1.6 /0.60
45
3.8
/1.6
/0.60
44
3.3
/1.4
/0.50
3.4
/1.4
/0.55
45
3.5
/ 1.5 /0.55
45
3.6
/1.5
/0.60
45
3.7
/1.6
/0.60
* Orifice numbers
shown in BOLD
are factory-installed.
A08202
56
Table
(Tabulated
10 - Orifice
Data Based
on 20,000
Size* and Manifold
BTUH
Derated
ALTITUDE
AVG. GAS
RANGE
HEAT VALUE
AT ALTITUDE
High
Pressures
Heat / 13,000
for Gas Input
Btuh
2% / 1000 Ft. (304.8M)
Above
SPECIFIC
0.58
Orifice
Meal-Heat
Rate
Orifice
(Btu/cu R}
650
No.
43
Hiqh/Med/Low
3.8 /1.6 /0.60
No.
7001
675
43
3.5
/1.5
/0.55
(2134)
700
725
44
44
3.8
/1.6
3.5
to
750
44
8000
775
(2438)
Low-Heat
per Burner,
Sea Level)
GRAVITY
OF NATURAL
0.60
Mnfld Press
(Continued)
/ 8,000 Btuh
GAS
0.62
Mnfld Press
Orifice
0.64
Mnfld Press
Orifice
Mnfld Press
No.
42
Hiqh/Med/Low
3.4 / 1.4 /0.55
No.
42
Hiqh/Med/Low
3.2 /1.4 /0.50
42
Hiqh/Med/Low
3.5 /1.5 /0.55
43
3.7
/1.6
/0.60
43
3.8
/ 1.6 /0.60
42
3.2
/1.4
/0.50
/0.60
43
3.4
/1.4
/0.55
43
3.5
/ 1.5 /0.55
43
3.6
/1.5
/0.60
/1.5
/0.55
44
3.6
/1.5
/0.60
44
3.8
/ 1.6 /0.60
43
3.4
/1.4
/0.55
3.3
/1.4
/0.55
44
3.4
/1.4
/0.55
44
3.5
/ 1.5 /0.55
44
3.6
/1.5
/0.60
45
3.7
/1.6
/0,60
44
3.2
/1.3
/0.50
44
3.3
/ 1.4 /0.55
44
3.4
/1.4
/0.55
800
825
45
45
3.5
/ 1.5 /0,55
45
3.6
/ 1.5 /0,60
45
3.7
/ 1.6 /0.60
44
3.2
/1.4
/0.50
3.3
/1.4
/0.55
45
3.4
/ 1.4 /0.55
45
3.5
/ 1.5 /0.55
45
3.6
/1.5
/0.60
625
43
3.8
/1.6
/0.60
42
3.2
/1.4
/0.50
42
3.3
/ 1.4 /0.55
42
3.4
/1.5
/0.55
650
675
43
44
3.5
/1.5
/0.55
43
3.6
/1.5
/0.60
43
3.8
/ 1.6 /0.60
42
3.2
/1.3
/0.50
O=
8001
(2439)
3.7
/1.6
/0.60
43
3.4
/1.4
/0.55
43
3.5
/ 1.5 /0.55
43
3.6
/1.5
/0.60
--_
to
700
725
44
44
3.5
/1.5
/0.55
44
3.6
/1.5
/0.60
44
3.7
/ 1.6 /0.60
44
3.8
/1.6
/0.60
3.2
/1.4
/0.50
44
3.4
/1.4
/0.55
44
3.5
/ 1.5 /0.55
44
3.6
/1.5
/0.55
9000
750
45
3.7
/ 1.5 /0,60
45
3.8
/ 1.6 /0,60
44
3.2
/ 1.4 /0.50
44
3.3
/1.4
/0.55
(27431
9001
775
600
45
43
3.4
/ 1.5 /0.55
45
3.6
/ 1.5 /0.55
45
3.7
/ 1.6 /0.60
45
3.8
/1.6
/0.60
3.8
/1.6
/0.60
42
3.2
/1.4
/0.50
42
3.3
/ 1.4 /0.55
42
3.4
/1.4
/0.55
(2744)
625
650
43
44
3.5
/1.5
/0.55
43
3.6
/1.5
/0.60
43
3.7
/ 1.6 /0.60
43
3.8
/1.6
/0.60
3.7
/1.6
/0.60
44
3.8
/1.6
/0.60
43
3.4
/ 1.5 /0.55
43
3.6
/1.5
/0.55
to
675
44
3.4
/1.4
/0.55
44
3.5
/1.5
/0.55
44
3.7
/ 1.5 /0.60
44
3.8
/1.6
/0.60
10000
700
44
3.2
/1.3
/0.50
44
3.3
/1.4
/0.55
44
3.4
/ 1.4 /0.55
44
3.5
/1.5
/0.55
(3048)
725
45
3.6
/ 1.5 /0.55
45
3.7
/ 1.6 /0.60
45
3.8
/ 1.6 /0.60
44
3.3
/1.4
/0.50
(m)
-->'
_
_
* Orifice numbers
shown in BOLD are factory-installed.
A08203
57
Table
11 - Altitude
ALTITUDE
FT (M)
UNIT
DAMAGE
HAZARD
Failure to follow
damage.
this caution
may
result
Multiplier
O)
for
DERATE
DERATE
0--2000
(0--61
2001 --3000
in component
Derate
% OF
FACTOR
USA
MULTIPLIER
FOR USA.*
0
1.00
4--6
0.95
6--8
0.93
8--10
0.91
10--12
0.89
12--14
0.87
14--16
0.85
16--18
0.86
18--20
0.81
(610--914)
3001 --4000
DO
NOT
redrill
orifices.
Improper
drilling
(burrs,
out-of-round
holes, etc.) can cause excessive burner noise
and misdirection
of burner flames. (See Fig. 61.)
(914--1219)
4001 --5000
(1219--1524)
5001 --6000
(1524--1829)
h. Jumper
6001 --7000
R to W/W1.
i. Let furnace
run for 3 minutes
in medium-heat
(1829--2134)
operation.
j. Measure time (in sec) for gas meter to complete
tion. Note reading.
7001 --8000
I revolu-
(2134--2438)
8001 --9000
k. Refer to Table 12 for cubic ft. of gas per hr.
1. Multiply
m.
gas rate cu ft/hr by heating
Move setup switch SW4-2
R and W/WI
value (Btu/cu
to OFF position
and W2 thermostat
(2438--2743)
connections.
ft).
9001 --10,000
(2746--3048)
and jumper
*Derate
(See Fig.
multiplier
factor is based on midpoint altitude for altitude range.
33.) This keeps furnace locked in high-heat
operation.
Repeat items i through 1 for high-heat
operation.
EXAMPLE:
altitude
High-heat
operation
at 0 - 2000
BURNER
ft. (0-609.6M)
FLAME
/_,"
r-
BURNER
Furnace input from rating plate is 80,000 Btuh
Btuh heating input = Btuh/cu ft. X cu ft/hr
Heating value of gas = 975 Btuh/cu ft.
Time for 1 revolution of 2-cu ft. dial = 88 sec
Gas rate = 82 cu ft/hr (from Table 12)
Btuh heating input = 103 X 975 = 79,950
Btuh
In this example, the orifice size and manifold pressure
is within +/- 2 percent of the furnace input rate.
adjustment
n. Remove jumper across R, W/WI,
and W2 thermostat
connections
to terminate call for heat.
o. Wait for blower off-delay
power to furnace.
to finish
then reset
l15-v
p. Wait for blower off-delay
power to furnace.
to finish
then reset
l15-v
q. Jumper R and W/WI
to start furnace.
thermostat
connections
MANIFOLD
A89020
on control
Fig. 62 - Burner
r. Wait for the blower to turn ON then repeat items i through
1for low-heat
operation. This setting should not require
adjustment
but if it does you will only have 15 minutes
to make the adjustment.
If you need more time then move
setup switch SWI-2
on control center to ON position
(See Fig. 33).
NOTE:
Measured
gas inputs
(high heat, medium
heat) nmst be within
+/-2
plate when
at sea level or derated
installed
installed
at higher
percent
heat, and low
of that stated on furnace
as stated above
J
rating
when
altitudes.
58
Flame
Table
SECONDS
SIZE OF TEST DIAL
FOR 1
REVOLUTION
Set Temperature
12 - Gas Rate cu Ft/Hr
SIZE OF TEST DIAL
SECONDS
1
cu _.
2
cu _.
5
cu _.
FOR 1
REVOLUTION
10
360
720
1800
50
11
327
655
1636
51
12
300
600
1500
52
13
277
555
1385
53
14
257
514
1286
54
15
16
240
225
480
450
1200
1125
55
56
17
212
424
1059
57
18
200
400
1000
58
19
189
379
947
59
20
180
360
900
60
21
22
171
164
343
327
857
818
62
64
23
157
313
783
66
24
150
300
750
68
25
144
288
720
70
26
138
277
692
72
27
28
133
129
267
257
667
643
74
76
29
124
248
621
78
30
120
240
600
80
31
116
232
581
82
32
113
225
563
84
33
109
218
545
86
34
35
106
103
212
206
529
514
88
90
36
100
200
500
92
37
97
195
486
94
38
95
189
474
96
39
92
185
462
98
40
41
90
88
180
176
450
439
100
102
42
86
172
429
104
43
84
167
419
106
44
82
164
409
108
45
80
160
400
110
46
47
78
76
157
153
391
383
112
116
48
75
150
375
120
49
73
147
367
Rise
ON
1
cu _.
72
71
69
68
67
65
64
63
62
61
60
58
56
2
cu _.
144
141
138
136
133
131
129
126
124
122
120
116
112
5
cu _.
360
355
346
340
333
327
321
316
310
305
300
290
281
54
53
51
50
48
47
46
45
44
43
42
41
40
39
38
38
37
36
35
35
34
33
33
32
31
30
109
106
103
100
97
95
92
90
88
86
84
82
80
78
76
75
74
72
71
69
68
67
65
64
62
60
273
265
257
250
243
237
231
225
220
214
209
205
200
196
192
188
184
180
178
173
170
167
164
161
155
150
position.
Temperature
medium-heat
furnace
setup
UNIT
DAMAGE
Failure to follow
damage.
this caution
control
switch
R-W2
HAZARD
may
result
in component
operation
rise
be
setup
and jumper
setup switch
to OFF
position
testing.
(See Fig. 33 for switch and terminal
side this range, proceed
Furnace must operate within ranges of temperature
rise specified
on the furnace rating plate. Determine
air temperature
rise as
follows:
R-W2
jumper
upon
2. When
is particularly
thermometer
temperature
temperature
NOTE:
operation
important
ducts as near fur-
readings
from supply-air
rise.
Temperature
by placing
rise
setup
can
switch
with straight-run
stabilize,
subtract
temperature
derate for altitude if applicable.
all return
control
determined
SWI-2
for
on furnace
is in ON position
e. Check Troubleshooting
Modulating
Condensing
air
low-heat
control
and supply
ducts
static pressure
for excessive
greater
than 0.5-in.
switch SWI-3
when
used. (See Fig. 33 for switch
return-air
and high-heat
c. Check
Set Thermostat
be
of
as follows:
d. Ensure Low Heat Rise Adjust
ducts.
to determine
completion
location.)
b. Check
tions causing
nace as possible. Be sure thermometers
do not see heat exchanger so that radiant heat does not affect readings. This
practice
on
place
position
a. Check gas input for low-, medium-,
ation.
in return and supply
operation,
DO NOT forget to return
and remove
in OFF
for
SW4-2
3. This furnace is capable of automatically
providing proper
airflow to maintain the temperature
rise within the range
specified on furnace rating plate. If temperature
rise is out-
Temperature
rise must be within limits specified
on unit
rating plate. Operation is within a few degrees of midpoint
of rise range when setup switch SWI-4 is OFF.
1. Place thermometers
determined
switch
For high-heat
and SW4-2
control.
can
placing
in ON position.
SWl-2
on furnace
by
U
1
a bypass
oper-
restricwc.
on furnace
humidifier
is
location.)
Guide for Variable-Speed
Furnaces.
Step
Heat Anticipator
When using a non-electronic
thermostat,
the thermostat
heat
anticipator must be set to match the amp draw of components
in
in
59
the R-W/W1
obtained
circuit.
Accurate
amp draw
only at the thermostat
The thermostat
and anticipator
subbase
should
measurements
terminals
an easy method
of obtaining
furnace
in low-heat,
2. See thermostat
manufacturer's
the heat anticipator
NOTE:
When
using an electronic
switch
amp
cycle length.
set cycle rate for 3
Check
Safety
to OFF position
power
motor
is disconnected,
and replace
5. Turn off l15-v
8. Reset thermostat
Check
Primary
pressure
switches
the furnace
will shut itself
the reason
pressure
and correct the condi-
to furnace.
motor
wire harness.
Reinstall
furnace
7. Turn on l15-v
power
to furnace.
to desired
temperature.
CHECKLIST
off the gas control
motor if furnace
system
and energizes
the
1. Put away tools and instruments.
overheats.
2. Verify flame
1. The recommended
method of checking this limit control is
to gradually block off return air after furnace has been operating for a period of at least 5 minutes.
has shut off burners,
33 will appear on furnace
method
power
inducer
Control
3. The return-air
opening
normal air circulation.
motor
access door.
operation.
2. As soon as limit control
inducer
to furnace.
down
immediately.
Determine
switches did not function properly
tion.
as part of normal
blower
switch
motor.
to "call for heat." When
section
shuts
at inducer
4. Set thermostat
inducer
Controls
air-circulating
Check
to furnace.
access door and disconnect
3. Turn on l15-v
6. Reconnect
This control
of the draft inducer.
power
wire harness
This section covers the safety controls that nmst be checked
before the installation
is complete.
The flame sensor, gas valve,
and pressure switches were all checked in the Start-up procedure
Limit
this test, the
are functioning
properly, status code 42 will flash on furnace control approximately
20 sec after thermostat switch
is closed.
If either a status code 31 or 32 is flashed when
cycles per hr.
3. Return setup switch SWI-2
thermostat on subbase.
operation
control
12-pin
leads
duct or motor
during
as follows:
2. Remove
for adjusting
heating
return-air
Switches
proves
1. Turn off l15-v
SWl-2
ammeter
instructions
thermostat,
Pressure
This control
be taken after
in low-heat.
turn setup
and for varying
Check
operation
to ON position (See Fig. 33) and connect
across thermostat subbase R-W.
safely if there is a restricted
failure. If the limit control does not function
cause nmst be determined
and corrected.
the thermostat
during current
thermostat
draw measurements.
The amp reading should
blower motor has started and furnace is operating
1. To operate
will operate
NOT be in the circuit while
measuring
current. If thermostat
has no subbase,
must be disconnected
from R and W/WI wires
measurement.
Fig. 63 illustrates
can be
R and W.
3. Verify that blower
stalled.
4. Cycle test furnace
a status code
control.
should
By using
this
to check
the
established
that the limit is functioning
be unblocked
to permit
limit
it can
control,
properly
rollout
be
5. Check
tions.
operation
6. Review
User's
7. Leave literature
manual
Clean up debris.
reset switch
and main access
with room
of accessories
Manual
doors
has continuity.
are properly
in-
thermostat.
per manufacturer's
instruc-
with owner.
packet near furnace.
and the furnace
THERMOSTAT SUBBASE
TERMINALS WITH
THERMOSTAT REMOVED
(ANITICIPATOR, CLOCK, ETC.,
MUST BE OUT OF CIRCUIT.)
HOOK-AR(
AMMETER
FROM UNIT 24-V
CONTROL TERMINALS
EXAMPLE:
5.0 AMPS ON AMMETER
10 TURNS AROUND JAWS
= 0.5 AMPS FOR THERMOSTAT
ANTICIPATOR
SETTING
A96316
Fig. 63 - Amp
Draw
with Ammeter
60
CHECKLIST-INSTALLATION
LOAD CALCULATION
Condensate
Heating Load (Btuh)
COMBUSTION
Drain
Cooling Load (Btuh)
Unit Level or Pitched Forward
Furnace Model Selection
Internal Tubing Connections
Free of Kinks and Traps
External Drain Connection
Tight and Sloped
AND VENT PIPING
Condensate
Start- Up
Termination Location
Vent
Leak
Trap Primed before
Heat Tape Installed if Required
Roof
CHECKLIST
- START-UP
Sidewall
Gas Input Rate (Set Within 2
percent of Rating Plate)
Combustion -Air
Temperature Rise Adjusted
Roof
Thermostat
Anticipator
Sidewall
Anticipator Setting Adjusted or
Attic
Cycle Rate (3 Cycles per Hr)
Selected
Crawl Space
Termination
Concentric
Safety Controls
Kit-2 Pipe or
Combustion-Air
Pipe Length
Combustion-Air
Quantity
Pipe Elbow
CHECKLIST
Check Operation
- START-UP
Gas Input Rate (Set Within
percent of Rating Plate)
2
Temperature Rise Adjusted
Vent Pipe Length
Thermostat Anticipator
Vent Pipe Elbow Quantity
Anticipator Setting Adjusted or
Pipe Diameter Determined from
Sizing Table
Cycle Rate (3 Cycles per Hr)
Selected
Pipe Sloped To Furnace
Safety Controls
Pipe Insulation
Primary Limit
Pressure Switches
Over Ceilings
Low-Ambient
Check Operation
Exposed Pipes
51
Copyright
2008 Carrier Corp. • 7310 W. Morris
Manufacturer
reserves
the right to change,
St. • Indianapolis,
IN 46231
at any time, specification8
and design8
Printed
without
in USA.
Edition
notice and without
62
obligations,
Date: 12/08
Catalo_
No: 58MVC-4SI
Replaces:
58MV(
3SI
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