TRANE Furnace/Heater, Gas Manual L0902560

User Manual: TRANE TRANE Furnace/Heater, Gas Manual TRANE Furnace/Heater, Gas Owner's Manual, TRANE Furnace/Heater, Gas installation guides

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Upflow/Horizontal and Downflow/Horizontal
Gas-Fired Condensing Furnaces
*UCIB040A9241A
*UCIB060A9361A
*UC1 B080A9421A
*UCIC100A9481A

*UCID100A9601A
*UCID120A9601A
*DCIB040A9241A
*DCIB060A9361A

*DCIB080A9421A
*DCIC100A9481A
*DCID120A9601A

*__First letter may be "A" or 'q-"
ALL phases

of this installation

must

comply

with NATIONAL,

IMPORTANT
-- This Document is customer
Please return to service information

STATE AND LOCAL

CODES

property
and is to remain with this unit.
pack upon completion of work.

*UC-C

*DC-C

(}

DOWNFLOW
A!R

AiR
FLOW

FLOW

UPFLOW

FLOWUPFLOW/HORIZONTAL
AiR

DOWNFLOW/HORIZONTAL

F_O_W

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A341624P02

Installer's

Guide

SAFETY

SECTION

The following safety practices and precautions
must be
followed during the installation,
servicing, and operation of this furnace.
1. Use only with the type of gas approved for this furnace. Refer to the furnace rating plate.
2. Install this furnace only in a location and position as
specified in "Location and Clearances"
(page 4), of
these instructions.
3. Provide adequate combustion and ventilation air to
the furnace space as specified in "Air for Combustion and Ventilation"
(pages 8-9), of these instructions.
4. Combustion products must be discharged outdoors.
Connect this furnace to an approved vent system
only, as specified in the "Venting" section (pages 1525), of these instructions.
5. 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, as specified in "Gas Piping" (page 34), of these
instructions.
6. Always install the furnace to operate within the
furnace's intended temperature-rise
range with a
duct system which has an external static pressure
within the allowable range, as specified on the unit
rating plate. Airflow with temperature
rise for cfm
versus static is shown in the Service Facts accompanying this furnace.
7. 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 a duct(s) sealed to the furnace casing and terminating
outside the space containing the furnace.
8. A gas-fired furnace for installation
in a residential
garage must be installed as specified in "Location
and Clearances"
section (page 4), of these instructions.
9. The furnace may be used for temporary heating of
buildings
or structures
under
construction
only
when the following conditions have been met:
a. The furnace venting system must be complete
and installed per manufacturers
instructions.
b. The furnace is controlled only by a room thermostat (no field jumpers).
c. The furnace return air duct must be complete
and sealed to the furnace and clean air filters
d.

are in place.
The furnace input rate and temperature
rise
must be verified to be within nameplate
marking.
100% of the furnace combustion
air requirement must come from outside the structure.

Trane

The furnace return
air temperature
range is
between 55 and 80 degrees Fahrenheit.
g. Clean the furnace, duct work, and components
upon substantial
completion of the construction
process, and verify furnace operating conditions
including ignition, input rate, temperature
rise
and venting,
according
to the manufacturer's
instructions.
10. This product
must be gas piped by a Licensed
Plumber or Gas Fitter in the Commonwealth
of Massachusetts.
Safety signal words are used to designate
a degree or
level of seriousness
associated with a particular
hazard.
The signal words for safety markings
are DANGER,
WARNING, and CAUTION.
a. DANGER indicates an imminently hazardous
situation which, if not avoided, will result in death or serious injury. This signal word is limited to the most extreme situations.
b. WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.
e. CAUTION indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate injury. It is also used to alert against unsafe practices and hazards involving only property damage.

CARBON MONOXIDE POISONING HAZARD
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.
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:
1. Seal any unused openings in the venting system.
2. Inspect the venting system for proper size and horizontal pitch, as required in the National Fuel Gas
Code, ANSI Z223.1/NFPA 54 or the CAN/CGA B149
Installation Codes and these instructions. Determine
that there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an
unsafe condition.
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 deficiencies which could cause an
unsafe condition.
4. Close fireplace dampers.
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.
6. Follow the lighting instructions. Place the appliance
being inspected into operation. Adjust the thermostat so appliance is operating continuously.
18-CD19D5-21

Installer's
7. 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 Z221.1/ NFPA 54 and/or CAN/CGA B149 Installation Codes.
8. After it has been determined that each appliance
connected to the venting system properly vents
where tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any
other gas-fired burning appliance to their previous
conditions of use.

FIRE OR EXPLOSION HAZARD
Failure to follow the safety warnings exactly could result in serious injury, death or property damage.
Improper servicing could result in dangerous operation, serious injury, death, or property damage.

GENERAL

INSTALLATION

INSTRUCTIONS

The manufacturer
assumes no responsibility
for equipment installed in violation of any code or regulation.
It is recommended
that Manual J of the Air Conditioning Contractors Association (ACCA) or A.R.I. 230 be followed in estimating
heating requirements.
When estimating heating requirements
for installation
at altitudes above 2000 ft., remember the gas input may need
to be reduced (See High Altitude Installation).
Material
in this shipment
has been inspected
at
the factory
and released
to the transportation
agency
without
known
damage.
Inspect
exterior
of carton
for evidence
of rough handling
in shipment. Unpack
carefully
after moving
equipment
to approximate
location.
If damage
to contents
is
found, report
the damage
immediately
to the delivering agency.
Codes and local utility requirements
governing the
installation of gas fired equipment, wiring, plumbing,
and flue connections must be adhered to. In the absence of local codes, the installation must conform with
latest edition of the National Fuel Gas Code ANSI
Z223.1 • National Installation Code, CAN/CGA B149.1.
The latest code may be obtained from the American Gas
Association Laboratories, 400 N. Capitol St. NW,
Washington D.C. 20001.
1-800-699-9277 or www.aga.org
These furnaces have been classified as CATEGORY IV
furnaces
in accordance
with latest edition of ANSI
Z21.47 • CAN/CGA 2.3 standards.
Category IV furnaces operate with positive vent static
pressure
and with a flue loss less than 17 percent.
These conditions require special venting systems, which
must be gas tight and water tight. These Category IV
Direct Vent furnaces are approved for installation
in
Manufactured/
Mobile
housing
when
used
with
BAYMFGH100A.
18-CD19D5-21

Guide

Contents
INSTALLATION INSTRUCTIONS
General Installation Instructions
Location and Clearances
Outline Drawings
Upflow Installation
Downflow Installation
Horizontal Installation
Air For Combustion and Ventilation
Duct Connections
Return Air Filters
General Venting Instructions
Venting Material
VentingTables
Horizontal Venting
VentingThrough The Wall
VentingThrough The Roof
Downward Venting
Venting Through a Masonry Chimney
Condensate Drain Instructions
Electrical Connections
Field Wiring Diagrams
Gas Piping
Combustion Input Checks

Start Up and Adjustment
Preliminary Inspections
Lighting Instructions
Sequence Of Operation
Control And Safety Switch Adjustments
Airflow Adjustment

Abnormal Conditions
IFC Error Flash Code

To prevent shortening its service life, the furnace
should not be used as a "Construction Heater" during
the finishing phases of construction until the requirements listed in item 9, a-g of the safety section of this
publication have been met. Condensate in the presence of chlorides and fluorides from paint, varnish,
stains, adhesives, cleaning compounds, and cement
create a corrosive condition which may cause rapid deterioration of the heat exchanger.

Do NOT install the furnace in a corrosive or contaminated atmosphere.

Installer's

Guide

LOCATION AND CLEARANCES
The location of the furnace is normally selected by the
architect, the builder, or the installer. However, before
the furnace is moved into place, be sure to consider the
following requirements:
1. Is the location selected as near the vent and as centralized for heat distribution as practical?
2. Do all clearances between the furnace and enclosure equal
Table 1.

or exceed

the minimums

shown

in the

3. Is there sufficient space for servicing the furnace
and other equipment?
A minimum
of 24 inches
front accessibility to the furnace must be provided.
Any access door or panel must permit removal of
the largest component.
4. Are there at least 3 inches of clearance between the
furnace front panel and any closed panel or door
provided?
5. Are the vent pipe and combustion
air inlet pipe
within vent table lengths? Will the pipes remain unobstructed?

Trane

6. Allow sufficient height in supply plenum above or
below the furnace to provide for cooling coil installation if the cooling coil is not installed at the time of
this furnace installation.
7. A furnace shall be installed so electrical components
are protected from water.
8. If the furnace is installed in a residential
garage,
it must be installed so that the burners and the ignition source are located not less than 18 inches (46
cm) above the floor and the furnace must be located
or protected
to avoid physical damage from vehicles.
IMPORTANT:
The furnace must be installed level The only allowable
variation would be slightly to the left and/or forward in
upflow installations or slightly toward the front in horizontal
installations. This is necessary for proper condensate drainage.

18-CD19D5-21

oo
i
©
I:D

*UC1 OUTLINE

DRAWING

(ALL DIMENSIONS ARE IN INCHES)
I:D
ol

rG
5/8

_,_c_

5/8

r
19 5/8

OLrLET
klR

41/16_Li

_
'_

F
OUTSIDE

AIR

2 FLUE CONNECT

'UCI OUTLINE DRAWING
{ALL DIMENSIONSARE IN INCHES)

SEE ROTES I £ ?

SIDES

_B
!

FRONT

TOP

FLUE

HORIZONTAL (FLUE
DISCHARGE LEFT SIDE ONLY)

15/16

\
/

_'s I 12
SJPFL'

_ i/2

ELECTRICAL
SUPPLY
(ALTERNATE)

GAS

ALCOVE
RIGHT SliDE

LEFT SIDE

G_AS
I SUPPLY
I/2 KkOCKOUT
(ALTERNATE)

I 5/8

/8
/8

I 5/16

i
5

14 7/8

0 II

REAR

_HORIZONTAL APPLICATION
\ (THIS SIDEONLY)

7/8
ELECTRICAL
SUPPLY
I 7/8 X
SLOT KNOCKOUT
CONDENSATEDRAIN
(HORIZONTAL)

MINIUM CLEARANCE TO
COMBUSTIBLE MATERIALS
UPFLOW

4 I/2

28 I/4

19 I/2

22 1/8

SIDE

RETURN i) i4 7ys

20 I/4

REAR

FRONT

18"

TOP

FLUE

CLOSET
RIGHT SIDE

AIR

REAR

FRONT

I 7/8

3 7/32

"" I

INLET

24 1/52

I I/8 KNOCKOUT
CONDENSATE
DRAIN
{ALTERNATE}

TOP

FLUE

0 II

DIM "A"

DIM "B"

DIM "C"

DIM "D"

DIM "E"

DIM "F"

÷UCIB040A9241 _
÷UCIBO60A9361 _
÷UCIBOSOA9421 _

17 I/2"

2 I/4"

16 I/4"

16"

7 I/2"

5/4"

I/4"

I0"

_UCIDIOOA9601 _
÷UCIDI20A9601**

21"

I/2"

1/2"

2 15/16"

=t
Itl

MODEL

÷UCICIOOA9481
_5/4

9/16

I 7/8

I/2

LEFT SIDE

÷UCIDI20A9601
^^ REQUIRES 3 II DIAMETER VENT PIPE
÷UCICIOOA9481 _ & ÷UCIDIOOA9601 _
REQUIRES 2 I/2"
÷ PREFIX LETTER MAY BE "A" OR "T"
_ SUFFIX LETTER MAY BE "AA" THRU "ZZ"

1/2"

23"

OR 5"

IN,

tt
m
m

I1
11

DIAMETER VENT PIPE

*DC1 DOWNFLOW/HORIZONTAL

OUTLINE

DRAWING

(ALL DIMENSIONS ARE IN INCHES)

I=I,,

FLUE
CONNECT
SEE NOTE I

I
I

4-1/2

(I)
'=I

INLET
AIR

t
5/8

4-1/11

AIR

OPENING
INTAKE

n__
(I)

ELECTRICAL
CONNECTION (ALTERNATE)
HORIZONTAL
DRAIN
I-7/8
x T/8
SLOT KNOCKOUT

ELECTICAL
CORNECTIOH (ALTERNATE)
KNOCKOUT

I/?

ELECTRICAL
SUPPLY

/--_1-112
GAS
CONNECTION

3" CONNECTION

2-1/8
,,

- 5-1/2

/lAIR

INTAKE
40

3-15/16

f
12-3/8

-7-3/8

iillllllil
I
L,
emmml

MINIMUM CLEARANCETO
COMBUSTIBLEMATERIALS
UPFLOW
SIDES
O"
REAR
O"
FRONT
3"
TOP
I"
FLUE
O"

_---.----_

7-3/8

20-1/41

CONDENSATE
DRAIN
KNOCKOUT

_-5/_6
KNOCKOUT
CONDENSATE DRAIN

GAS CONNECTION
(ALTERNATE)
KNOCKOUT

OUTLET
MODEL
(SEE NOTE I)

AIR

CDXIB040A9241A*
IDCIB040A9241A_
CDXIB060A9361A+
IDCIB060A9361A*

3/4"" _

Oc_

3/4

"--="

19-9/16

7-3/4
NOTES:
I
DIAMETER OF VENT PIPE MAY BE LIMITED
TO ?-I1?"
OR S" ON SOME MODELS AT DIFFERENT
ALTITUDES.
REFER TO THE VENT LENGTH TABLE
FOR PROPER APPLICATION.
2. #SUFFIX LETTER MAY BE A THRU Z.
3. IPREEIX LETTER MAY BE =T = OR "A =.

DIM

"A"

17-1/2"

DIM

"B"

DIM

"C"

DIM "D"

2-1/4"

16-1/4"

16"

21"

2-112"

19-3/4"

19-1/2"

24-1/2"

2-15/16"

23-1/4"

CDXIB080A9421AI
IDCIB080A9421A*
CDXICI00A9481Ae
IDCICIOOA9481A_
CDXlDI20A9601A*
|DClDI20Ag601Ao

23"

HORIZONTAL (FLUE
DISCHARGE ON THE LEFT)
ALCOVE
RIGHT SIDE
O"
LEFT SIDE
O"
REAR
6"
FRONT
18"
TOP
I"
FLUE
O"
HORIZONTAL (FLUE
DISCHARGE ON THE LEFT)
CLOSET
RIGHT SIDE
I"
LEFT SIDE
I"
REAR
3"
FRONT
3"
TOP
I"
FLUE
O"

Installer's
UPFLOW

TABLE 1

INSTALLATION

Standoffs and screws (See Figure 1) are included with
the cased coils for attachment
to the furnace. There are
clearance alignment holes near the bottom of the coil
wrapper. Drill screws are used to engage the furnace
top flanges. The standoff is inserted into the cabinet
alignment hole. The drill screws are inserted through
standoffs
furnace
flange.
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ii iii iii then
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iii iii
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The coil is always placed downstream of the furnace airiiiliiiiiiii iii!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!;iiii
flow.
(_

STANDOFFS

(4)

DRILL

SCREWS

(4)

FOR VERTICAL
INSTALLATIONS:

CABINET
WIDTH

RETURN
DUCT WIDTH

17-1/2"

16-1/4"

16-5/8"

20-1/8"

15-5/8"

19-3/8"

21"

19-3/4"

20-1/8"

19-1/8"

19-3/8"

24-1/2"

23-1/4"

23-5/8"

20-1/8"

22-5/8"

19-3/8"

(BOTH

DOWNFLOW

INSTALLATIONS

Required floor opening:

(BENT

UP)

SUB-BASE

SUB-BASE
FLANGE

o
=

(BENT
iNSULATION

[_0_F
,,

SUBBASE CROSS SECTION

18-CD19D5-21

FOR DOWNFLOW
IN HORIZONTAL

ONLY

SIDES)

Do NOT install the furnace directly on carpeting, tile or
other combustible material other than wood flooring.
For vertical downflow application, subbase (BAYBASE205) must be used between the furnace and combustible flooring. When the downflow furnace is installed
vertically with a cased coil, a subbase is not required.

SUB-BASE
FLANGE

COIL CONNECTION

DOWNFLOW

STANDOFFS

PLENUM OPENING
C ....
D"

HORIZONTAL INSTALLATION

BRACKET
FURNACE

SIDES)

FLOOR OPENING
"A....
B ....

The coil and furnace must be fully supported when used
in the horizontal
position. It is always recommended
that an auxiliary drain pan be installed under a horizontally installed evaporator
coil or 90% gas furnace. Connect the auxiliary drain line to a separate drain line (no
trap is needed in this line).
Three brackets (with screws) are included with downflow furnaces for installation
to stabilize and secure the
furnace and 2!4TXC cased coil in the horizontal
position. See Figure 3.
IMPORTANT:
The 2/4TXC cased coil must be placed downstream of the
furnace. In horizontal installations, the apex of the coil
may point either toward or away from the furnace. See
the 2/4TXC coil Installer's Guide for more details.

CASED
- SCREWS

(BOTH

Guide

SUB-BASE

UP)

The cased coil is secured to the furnace and both the
furnace and the cased coil must be properly supported.
The brackets mount using the rear screws on the coil
case and use the screws provided to secure the bracket
to the furnace. The remaining bracket is placed as close
to center as possible (horizontally) between the coil case
front and the furnace bottom channel (for downflow/
horizontal furnace). Use four of the screws provided to
secure the bracket. The upflow furnace, converted to
horizontal, aligns and attaches the TXC coil as in Figure 1. However, the coil requires additional support.
The furnace may be installed in an attic or crawl space
in the horizontal position by placing the furnace on the
left side (as viewed from the front in the vertical position). The horizontal
furnace installation
in an attic
should be on a service platform large enough to allow
for proper clearances on all sides and service access to
the front of the furnace (See Figure 4 & Clearance
Table). Line contact is only permissible
between lines
formed by intersections
of the top and two sides of the
furnace casing and building joists, studs, or framing.
The furnace may be placed horizontally in a crawl space
on a pad or other noncombustible
material which will
raise the unit for sufficient protection
from moisture.

Installer's

Guide

Air for Combustion
and Ventilation,
of the National
Fuel Gas Code, ANSI Z223.1 -- CAN/CGAB149.1
or applicable provisions of the local building codes. Special
conditions created by mechanical exhausting of air and
fireplaces must be considered to avoid unsatisfactory
furnace operation.
OUTSIDE AIR IS RECOMMENDED
The use of indoor air for most applications is acceptable,
unless there is the presence
of corrosive
chemicals

UPFLOW/
HORIZONTAL
SHOWN

The furnace
must be supported
at both ends and
the middle when installed
horizontally.
The furnace
must also be elevated
a minimum
of 6
inches to allow clearance
for the condensate
drain
to exit the cabinet in the horizontal
position.
The horizontal furnace may also be suspended from the
joists using 3/8" all-thread rods with pieces of angle iron
underneath
the furnace to form a hanging rack at both
ends and the midpoint. The rods need to be of sufficient
length to allow for proper clearances from combustible
materials.
The angle iron needs to be at least 32" in
length to allow for access to service panels.

AIR FOR COMBUSTION

AND VENTILATION

If these furnaces are installed in a nondirect vent capacity
then the adequate flow of combustion and ventilating

@
50 CU. FT. OR MORE
PER 1000 BTU/HR. INPUT
ALL EQUIP. INSTALLED

DOORS

FiACE

HE;R
WATER

_DRYER
CLOTHES

UNCONFINED
air must not be obstructed from reaching the furnace.
Air openings provided for combustion air must be kept
free of obstructions
which restrict the flow of air. Airflow restrictions
affect the efficiency and safe operation
of the furnace. Keep this in mind should you choose to
remodel or change the area which contains your furnace. Furnaces must have a free flow of air for proper
performance.
Provisions for combustion
and ventilation
air shall be
made

in accordance

with latest

edition

of Section

or contamination.
Certain types of installation
will
require
the use of outside air for combustion.
The following types of installations
will require
use of
OUTDOOR AIR for combustion,
due to chemical exposures:
* Commercial buildings
* Buildings with indoor pools
* Furnaces installed in "confined" laundry rooms
* Furnaces installed in "confined" hobby or craft rooms
* Furnaces installed near chemical storage areas.
Exposure to the following substances
in the combustion
air supply will also require OUTDOOR AIR for combustion:
* Permanent
wave solutions
* Chlorinated
waxes and cleaners
* Chlorine based swimming
* Water softening chemicals
* Deicing salts or chemicals
* Carbon Tetrachloride

pool chemicals

* Halogen type refrigerants
* Cleaning solvents (such as perchloroethylene)
* Printing inks, paint removers, varnish, etc.
* Hydrochloric acid
* Cements and glues
* Antistatic fabric softeners for clothes dryers
* Masonry acid washing materials
Furnace locations may be in a "confined
space" or an
"unconfined
space".
Unconfined space is defined in Figure 5. These spaces
may have adequate air by infiltration to provide air for
combustion
and ventilation.
Buildings
with tight
construction
(for example, weather
stripping,
heavily
insulated, caulked, vapor barrier, etc.), may need additional air to be provided as described for confined space.
Confined spaces are installations
with less than 50 cu.
ft. of space per 1000 BTU/hr input from all equipment
installed. Air for combustion
and ventilation
requirements can be supplied from inside the building as in
Figure 8 or from the outdoors, as in Figure 9.

5.3,

18-CD1 9D5-21

Installer's
(_)F OR MINIMUM
AREA SPACE
IN SQUARE
FEET
UNCONFINED
INSTALLATIONS
FURNACE
MAXIMUM BTUH
INPUT RATING

WITH 8 FT. CEILING
MINIMUM AREA IN SQUARE FEET
OF UNCONFINED SPACE

60,000
80,000
100,000
120,000

375
500
625
875

FURNACE

Guide

®
CONFINED
AIR FROM

SPACE
INSIDE BUILDING

SPACE

PERMANENT
OPENINGS

_'1

CONFINED
SPACE
LESS THAN 50 CU. FT.
PER 1000 BTU/HR. INPUT
ALL EQUIP. INSTALLED

CONFINED
AIR FROM

1. All air from inside the buildina as in Figure 8: The
confined space shall be provided with two permanent openings communicating
directly with an additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for an
unconfined space. The total input of all gas utilization equipment
installed
in the combined
space
shall be considered in making this determination.
Refer to Table 2 for minimum open areas requirements.
2. All air from outdoors as in Figure 9: The confined
space shall be provided with two permanent
openings, one commencing within 12 inches of the top
and one commencing within 12 inches of the bottom of the enclosure. The openings shall communicate directly, or by ducts, with the outdoors or
spaces (crawl or attic) that freely communicate
with
the outdoors. Refer to Table 2, for minimum open
areas requirements.
TABLE 2

SPACE
OUTDOORS

CONFINED

_'///////////z'//-/-///'/'//z'/,
OUTLET

SPACE
OUTDOOR
AIR DUCTS

INLET
_, "//////_/////z2

CONFINED SPACE

,.//7//7. _

AIR FROM VENTILATED ATTIC/CRAWL SPACE
TO OUTDOORS

CONFINEDSPACE

ALTERNATE
INLET AIR

MINIMUM FREE AREA IN SQUARE INCHES
EACH OPENING FURNACE ONLY)
Furnace
Maximum
BTUH/INPUT
Rating
60,000
80,000
100,000
120,000

Air
From
Inside
lOO
lOO
lOO
12o

Air From Outside
CONFINED
Vertical
Duct
15
20
25
30

Horizontal
Duct

SPACE

AIR FROM VENTILATED

ATTIC

30
40
50
60
•"_

SPACECONFINED

18-CD19D5-21

OUTLET

lAIR INLET
AIR DUCT

Installer's

Guide

DUCT CONNECTIONS
Air duct systems should be installed in accordance with
standards
for air conditioning
systems, National Fire
Protection Association Pamphlet No.90. They should be
sized in accordance with ACCA Manual D or whichever
is applicable.
Central furnaces, when used in connection with cooling
units, shall be installed in parallel or on the upstream
side of the cooling coil to avoid condensation
in the heat
exchanger. With a parallel flow arrangement,
the dampers or other means used to control flow of air shall be
adequate to prevent chilled air from entering the furnace, and if manually operated, must be equipped with
means to prevent operation of either unit unless the
damper is in full heat or cool position.
On any job, flexible connections of nonflammable
material may be used for return air and discharge connections
to prevent transmission
of vibration. Though these units
have been specifically designed for quiet, vibration free
operation, air ducts can act as sounding boards and could,
if poorly installed, amplify the slightest vibration to the
annoyance level.
When the furnace is located in a utility room adjacent
to the living area, the system should be carefully designed with returns
to minimize noise transmission
through the return air grille. Although these furnaces
are designed with large blowers operating at moderate
speeds, any blower moving a high volume of air will
produce audible
noise which could be objectionable
when the unit is located very close to a living area. It is
often advisable to route the return air ducts under the
floor or through the attic. Such design permits the installation
of air return
remote from the living area
(i.e. central hall).
When the furnace is installed so that the supply ducts
carry air circulated by the furnace to areas outside the
space containing the furnace, the return air shall also
be handled by a duct(s) sealed to the furnace and terminating outside the space containing the furnace.
RETURN AIR DUCT SYSTEMS
Where there is no complete
return duct system,
the return connection
must be run full size from
the furnace to a location outside the utility room,
basement,
attic, or crawl space.
Do Not install return air through the back of the furnace cabinet
DoNor
install return air through the side of the furnace cabinet on horizontal applications.
NOTE:
Minimum

return air temperature

is 55 ° F.

All return air duct systems
tion of return air filters.

should provide

for installa-

1. Set the furnace in place.
2. For upflow side return
installations,
remove the
insulation around the opening in the blower compartment.
3. The side panels of the upflow furnace include locating notches that are used as guides for cutting an
opening for return air, refer to Figure 10 and the
outline drawing on page 4 for duct connection
dimensions for various furnaces.
NOTE:
On upflow 5 ton airflow models, if the airflow requirement exceeds 1800 CFM, these models will require return air openings and filters on both sides; OR 1 side
and the bottom; OR just the bottom.

4. If a 3/4" flange is to be used for attaching the air inlet duct, add to cut where indicated by dotted lines
in Figure 10. Cut corners diagonally and bend outward to form flange.
5. If flanges are not required, and a filter frame is installed, cut between locating notches (See Figure
10).
6. The bottom panel of the upflow furnace must be removed for bottom return air. Lay the furnace on its
back. Remove the two 1/4" hex screws securing the
bottom front channel to the cabinet.
Lower the
front edge of the bottom front channel and pull forward to remove the channel. The bottom return air
panel will now easily slide out of the cabinet. Reinstall the bottom front channel for upflow bottom return installations.
7. Use the filter retainer on side or bottom if filter is to
be used within the furnace cabinet on upflow only
installations.
8. The horizontal
installation
of the upflow furnace requires an external filter section.
Filter
kits are available
for horizontal
applications.
9. Connect duct work to furnace. See Outline Drawing
for supply and return duet size and location. Flexible duet connectors are recommended
to connect
both supply and return air duets to the furnace. If
only the front of the furnace is accessible, it is recommended that both supply and return air plenums
are removable.

RETURN

AIR FILTERS

(Filters not supplied with unit)
TYPICAL UPFLOW RETURN AIR FILTER
INSTALLATIONS
These furnaces
require high velocity type air filters.
The filters may be located within the furnace blower
compartment
for UPFLOW furnaces in either a BOTTOM or SIDE (left side or right side) return air inlet.

18-CD1 9D5-21

Installer's
TABLE

Guide

MODELS

CABINET

NUMBERS

WIDTH

FILTER
QTY

*UC1B040A9241A
*UC1B060A9361A
*UC1B080A9421A

17-1/2"

1 - 17"X

& SIZE

25" X 1"

*UC1C100A9481A

21"

1 - 20" X 25" X 1"

*UC1 D100A9601A##
*UC1 D120A9601A##

24-1/2"

1 - 24" X 25" X 1"

*DC1B040A9241A
*DC1B060A9361A
*DC1B080A9421A

17-1/2"

2 - 14"X

*DC1C100A9481A

21"

*DC1D120A9601A

24-1/2"

20" X 1"

2 - 16" X 20" X 1"
2 - 16"X

20" X 1"

## - Requires filters on 2 sides OR 1 side and bottom
filter or just the bottom

NOTE:
On upflow 5 ton airflow models, if the airflow requirement exceeds 1800 CFM, these models will require return air openings and filters on both sides; OR 1 side
and the bottom; OR just the bottom.

The upflow furnace blower door has a hinge at the bottom which allows the door to tilt forward for filter replacement without the door being removed (See Figure
11). The optional furnace filter in the bottom or side
configuration
can be removed by simply turning the two
latches on the blower door and tilting the door forward.

FILTER
RACK -_
RAILS

AUTOMATIC
ADJUSTMENT

NOTCHES
VIDED FOR PROSIDE
'
RETURN
CUTOUT

DRAWING

RETAINING
PIN

UPFLOW FURNACE ONLY

LOCATING

*SEE OUTLINE

Blower Door Hinge and Bottom Filter Rack Installation

(Both

CUT OUT
FOR SIDE

Sides)

Optional Filter Rack Accessory Kit

BA YRA CK960A

FRONT
of Furnace

The filter rails are spring loaded for automatic
adjustment to allow standard
size, locally obtainable replacement filters. The filter rack itself slides to adjust to the
required width needed for bottom or side return (See
Figure 12).
OPTIONAL BOTTOM FILTER RACK INSTALLATION
With the filter removed, the filter rack is compressed
and then inserted into the bottom of the furnace. The
retaining screw/ pin on each side inserts into engagement holes at the bottom of the furnace cabinet side.
ENGAGEMENT
HOLE DETAIL
(Typical both sides
and blower deck)

18-CD19D5-21

Installer's

Guide

OPTIONAL FILTER RACK INSTALLATION FOR SIDE
RETURN AIR ON UPFLOW FURNACES

Engagement

(Left or Right)
NOTE:
The optional filter rack installation is not allowed for
right side return on the following model: *UXICO80A9601.

If side air return
should be used:

is desired,

the following instructions

BLOWER
DECK

Hole

For Filter Rack
installation With
Side Return

-'/
_t__Rm_

pin/ screw
the blower
against the
14 - 18.

d. Install the optional furnace filter on the side inserting
the chamfer end first.

Furnace
Cabinet
Side

a. Open or remove the blower door.
b. Leave the bottom panel in place.
c. After the side cutout is made following the directions in the "Return Air Duct Connections" section on pages 8 and 9, compress the optional filter rack and reinstall in the side of the furnace.
Confirm that the upper retaining
locks into the engagement
hole in
deck and the lower pin/screw rests
side of the bottom panel. See Figures

Furnace
Blower
Deck

Retaining
Screw/Pin

SIDE
CUTOUT

_Filter
Rack
Assembly

RETAINING
PIN
(Both

Filter
Cabinet
Side

BOTTOM

Furnace

Rack

Retaining
Filter Rack
Screw/Pin

7J__

RACK
RAILS

PANEL
INSTALLED

Typical Upflow Left Side Return
Filter Rack Installation

Engagement Hole
For Filter Rack
installation With
Bottom Return

BOTTOM ENGAGEMENT
Filter Rack
Retaining
Screw/Pin

Furnace
Cabinet _
Side

Filter
Rack

Engagement
Hole
For Filter Rack
Installation
With
Bottom
Return

-d_

•

T
Bottom Panel

Typical Upflow Right Side Return Filter Rack Installation

18-CD1 9D5-21

Installer's

Guide

CHAMFER
END OF
FILTER
INTO
RACK

GOES
FILTER
FIRST

RETURN AIR FILTERS FOR UPFLOW FURNACE IN
HORIZONTAL CONFIGURATION
When the Upflow Furnace is installed in the horizontal
configuration,
the return air filters must be installed
exterior to the cabinet. Remote filter grilles may be
used for homeowner convenience or the filters may be
installed in the duct work upstream of the furnace. See
Figure 20.

Door Hinge Removed

ALTERNATE UPFLOW FILTER CLIP/
BRACKET INSTALLATION
1. Determine
the location to be used.

The

furnace

cabinet has dimples for location of the alternate furnace clips (Side return only). Pre-drill clearance
holes with a 3/16" drill. Bottom return holes are
pre-drilled.
2. Install the clips in front and rear of the desired location using the screws provided. The filter clip with
the leaf spring mounts in the rear of the cabinet.

TYPICAL RETURN AIR FILTER INSTALLATION IN
UPFLOW MODEL IN HORIZONTAL POSITION
ALTERNATE FILTER
CLIPS LOCATION

BLOWER DOOR/HINGE REMOVAL
If clearance or other problems create a problem in using the tilting door, the blower door hinge may be removed without creating any problems with the seal of
the furnace. To remove the blower door, tilt the door
forward 2 to 3 inches and pull up. To remove the tilt feature, simply remove the lower hinge as shown in Figure 21. The bottom of the blower door will catch in the
bottom of the furnace front channel for door replacement.

18-CD19D5-21

INSTALLING THE FILTER
The optional filter may need to be cut to fit the unit depending on the location of the return air filter.
A score line and the words "CUT HERE" are located on
the end of the filter. If your application requires
the filter, do so as indicted by the score mark.

cutting

Installer's

Guide
TABLE 5
LOCATING FILTER RETAINER BRACKETS IN DUCTWORK

RETURN AIR

UNIT
SIZE

BOTTOM

SIDE

17-1/2"

DO NOT CUT

21"

DO NOT CUT

CUT ON LINE

24-1/2"

DO NOT CUT

CUT ON LINE

CABINET
WIDTH
17-1/2"
21"
24-1/2"

TYPICAL DOWNFLOW FURNACE RETURN AIR FILTER
INSTALLATIONS

RETURN
FILTER
DUCT DIMENSION DIMENSION BRACKET
"A....
B"
WIDTH
LOCATION*
16-1/4"
19-3/4"
23-1/4"

15"
19-1/2"
22"

14"
14"
14"

* LOCATION DIMENSION IS FROM END OF DUCT AGAINST
SCREW HOLES FOR THE BRACKET.

14-3/8"
13-1/8"
13-5/8"

THE FURNACE TO THE

Two high velocity type air filters are required for for
each downflow furnace. Downflow furnace filters must
be located outside the furnace cabinet. Typical installations are shown in Figure 23. Tables 5 and 6 provide information for installation
of the filter retaining brackets
shipped with downflow furnaces.
TABLE 4
MODEL
NUMBERS

CABINET
WIDTH

FILTER QTY & SIZE

*DC1 B040A9241A
*DC1B060A9361A
*DC1 B080A9421A

17-1/2"

2 - 14" X 20"X 1"

*DC1C100A9481A

21"

2 - 16" X 20" X 1"

*DC1 D120A9601A

24-1/2"

2 - 16" X 20" X 1"

Airflow
DOWNFLOW

TABLE 6
MINIMUM CLEARANCE FROM COMBUSTIBLE MATERIALS FOR
UPFLOW/HORIZONTAL
AND DOWNFLOW/HORIZONTAL
FURNACES
UNIT LOCATION
FURNACE SURFACE

HORIZONTAL
CLOSET

HORIZONTAL
ALCOVE / ATTIC

SIDES

BACK

TOP

FRONT

18"

VENT

NOTE: CLEARANCE
14

VERTICAL
CLOSET

REQUIRED AT TOP OF PLENUM IS 1"
18-CD19D5-21

Installer's
GENERAL

VENTING

THIS FURNACE MUST BE VENTED TO THE OUTDOORS.
THESE FURNACES ARE INDUCED DRAFT VENTED
AND MUST NOT BE CONNECTED
TO ANY VENT
SERVING ANOTHER APPLIANCE.
PLEASE NOTE
THAT THESE FURNACES
USE POSITIVE-PRESSURE VENT SYSTEMS.
Proper venting is essential
to obtain maximum
efficiency from a condensing furnace. Proper installation
of
the vent system is necessary to assure drainage of the
condensate
and prevent
deterioration
of the vent
system.
American
Gas Association
has certified the design of
condensing
furnaces
for a minimum
of 0" clearance
from combustible
materials
with a single wall plastic
vent pipe.
The recommended
system is assembled from 2", 2-1/2",
or 3" plastic pipe and fittings (See Table 7, page 14).
Where the system is routed to the outdoors through an
existing masonry
chimney
containing
flue products
from another gas appliance, or where required by local
codes, then 3" venting of Type 29-4C stainless
steel
must be used in place of PVC material.
These furnaces have been classified as CATEGORY IV
furnaces
in accordance
with the latest
edition of
ANSI Z21.47 • CAN/ CGA-2.3 Standards.
Category IV
furnaces operate with positive vent pressure and with a
vent gas temperature
less than
140°F above the
dewpoint. These conditions require special venting systerns, which must be gas tight and water tight.
NOTE:
When an existing furnace is removed from a venting
system serving other gas appliances, the venting system is likely to be too large to properly
vent the remaining
attached appliances.

The following steps shall be followed with each appliance remaining
connected to the common venting systern placed in operation, while the other appliances remaining connected to the common venting system are
not in operation.
1. Seal any unused openings in the common venting
system.
2. Visually inspect the venting system for proper size
and horizontal
pitch and determine
there is no
blockage or restriction, leakage, corrosion or other
deficiencies which could cause an unsafe condition.

Guide

3. Insofar as is practical, close all building doors and
windows and all doors between the space in which
the appliances remaining connected to the common
venting system are located and other spaces of the
building. Turn on clothes dryers and any appliances
not connected to the common venting system. Turn
on any exhaust fans, such as range hoods and bathroom exhausts,
so they will operate at maximum
speed. Do not operate a summer exhaust fan, close
fireplace dampers.
4. Follow the lighting instructions.
Place the appliance
being inspected in operation. Adjust thermostat
so
appliance will operate continuously.
5. Test for spillage at the draft hood relief opening after 5 minutes of main burner operation.
Use the
flame of a match or candle, or smoke from a cigarette, cigar, or pipe.
6. After it has been determined that each appliance remaining connected to the common venting system
properly vents when tested as outlined above, return door, windows, exhaust fans, fireplace dampers
and any other gas-burning
appliance to their previous conditions of use.
If improper venting is observed during any of the above
tests, the remaining
common venting system must be
corrected. Correction
of the remaining
common vent
system should be done by referring to the latest edition
of the National Fuel Gas Code (ANSI Z223.1)• CAN/
CGAB149.1
Installation
Codes
or "Exhibit
J" of
ANSI Z21.47 • CAN/CGA-2.3 Standards.
The following
are general steps to be used to correct or resize a remaining vent system when a furnace which may not be
common vented is removed from the system:
a. Determine the Btu per hour input of all remaining appliances attached to the venting system.
b. Determine the diameter, rise, and lateral of the
existing venting system, as well as quantity and
type of bends.
c. Use the appropriate tables in the latest edition of
the National
Fuel Gas Code (ANSI Z223.1 •
CAN/CGA B149.1 Installation
Codes or "Exhibit
J" of ANSI Z21.47 • CAN/CGA-2.3 Standards. "Exhibit J" includes examples and drawings of typical
venting systems.
PVC VENT FITTING MATERIAL
These fittings are available
from your Gas Furnace
Distributors.
Straight Pipe Sections, Couplings, 45 ° Elbows, 60 ° Elbows, 90 ° Elbows, Vent or Sanitary Tee, or other necessary fittings may be 2", 2½", 3", or 4" diameter. The allowable materials are shown in Table 7.
NOTE:
Follow venting
cemenL

18-CD19D5-21

instructions

carefully

when using

PVC

Installer's

Guide

IMPORTANT:
These furnaces may be installed as Direct Vent (sealed
combustion)
or as Nondirect vent (single pipe). The furnaces are shipped DIRECT VENT with sealed combustion.
For DIRECT VENT APPLICATION:
The furnaces must be
vented to the exterior of the house and combustion
air
MUST come through the inlet air pipe FROM OUTSIDE
AIR.
For NONDIRECT
VENT APPLICATION:
The furnace shall
be vented to the exterior of the house, but combustion air
may enter from the surrounding area as long as combustion air requirements
are met. (See AIR FOR COMBUSTION AND VENTILATION)

VENT FITTING MATERIAL - PLASTIC
Gas and liquid tight single wall vent fittings, designed
for resistance
to corrosive flue condensate,
MUST be

Procedure for Cementing Joints:
1. Cut pipe square, remove ragged edges and burrs.
Chamfer end of pipe, then clean fitting socket and
pipe joint area of all dirt, grease, moisture or chips.
2. After checking pipe and socket for proper fit, wipe
socket and pipe with cleaner-primer.
Apply a liberal
coat of primer to inside surface of socket and outside of pipe.
DO NOT ALLOW PRIMER TO DRY BEFORE APPLYING CEMENT.
3. Apply a thin coat of cement evenly in the socket.
Quickly apply a heavy coat of cement to the pipe
end and insert pipe into fitting with a slight twisting
movement until it bottoms out.
4. Hold the pipe in the fitting for 30 seconds to prevent tapered socket from pushing the pipe out of
the fitting.

used throughout.
Listed in Table 8 & 9 are 2", 2½", 3", and 4" size fittings
that meet these requirements.
The materials listed are
various grades of PVC and ABS plastic.
TABLE 7
PLASTIC

PIPE DESIGNATIONS
PVC

ASTM STANDARD

PIPE TYPE

F891

CELLULAR

D2665

DWV

D1785

ALLOWABLE TEMPERATURE

CORE
PIPE

SCH 40, 80, 120

D2241

SDR

MARKING

"158

SERIES

ASTM

F891

*'158

ASTM

D2665

*'158

ASTM

D1785

*'158

ASTM

D2241

CPVC
ASTM STANDARD

PIPE TYPE

D2846

CPVC

F441

ALLOWABLE TEMPERATURE

SCH 40, 80

F442

SDR

MARKING

*'212

SERIES

ASTM

D2846

*'212

ASTM

F441

*'212

ASTM

F442

ABS
ASTM STANDARD

PIPE TYPE

ALLOWABLE TEMPERATURE

D2661

SCH 40 DWV

**'180

F628

SCH

40 DWV CELLULAR

CORE

MARKING
ASTM

**'180

D2661

ASTM

F628

*
- Allowable temperatures based on classifications covered in ASTM D4396 [Deflection Temps Under Load (264 PSI)]
** - Allowable temperatures based on classifications covered in ASTM D1784 [Deflection Temps Under Load (264 PSI)]
*** - Allowable temperatures based on classifications covered in ASTM D3965 [Deflection Temps Under Load (264 PSI)]

PIPE JOINTS: All joints must be fastened and sealed to
prevent escape of combustion products into the building.
NOTE:
It is recommended
that the first joints from the furnace
be connected and sealed with high temperature
RTV.
This will enable the pipes to be removed later without
cutting.
Be sure to properly support these joints.

BONDING OF PVC
Commercially
available solvent cement must be used
to join the pipe and fittings. Follow instructions
on the
container carefully.
16

5. Wipe

all excess

cement

from

the

joint

with

a rag.

Allow 15 minutes
before handling.
Cure time varies
according
to fit, temperature
and humidity.
Important:
Products installed in Canada must use vent systems
that are certified to the Standard for Type BH Gas
Venting Systems (ULC $636) for Class II-A venting
systems (up to 65 degrees C). Components
of the vent
system must not be interchanged
with other vent systems or unlisted pipe or fittings.
Plastic components,
specified primers, and glues must be from a single
system manufacturer
and not intermixed
with other
system manufacturer's
vent system parts. In addition,
the first three feet of the vent pipe must be visible for
inspection.
18-CD19D5-21

Installer's
(_

Connection of the vent pipe to the vent collar should
also be accomplished using RTV type sealant. This type
sealant provides a connection
which remains
flexible
and can be separated in the future if service needs require the removal of the vent pipe for service or clearance.

VENT AND INLET AIR CONNECTIONS
Seal VENT
with

Guide

PIPE

RTV sealant

NOTE:
To ensure proper operation at the vent lengths indicated, the combustion air inlet and vent terminals
should be in the same pressure zone. Terminating the
vent and inlet in different pressure zones will change
the maximum vent lengths and may cause nuisance

Front of Furnace

Seal INLET AIR PIPE
with RTV sealant

IMPORTANT:
All joints must be water tight. Flue condensate is somewhat acidic, and leaks can cause equipment damage.

Connection of the pipe and collar of the combustion
air inlet should just be a friction fit. It is recommended
that the inlet air joint be sealed with RTV type sealant
to allow the joint to be separated for possible future setvice. The inlet and vent pipes must be properly supported throughout the entire length.

UPFLOW/HORIZONTAL VENTING TABLE
TABLE 8
MAXIMUM VENT LENGTH:
DIRECT VENT (2 PIPE SYSTEM) MAXIMUM TOTAL EQUIVALENT
FEET FOR
VENT AND INLET AIR PIPES (See Notes)
MODEL

2" PIPE
& FITTINGS

2-1/2" PIPE
& FITTINGS

3" PIPE
& FITTINGS

NONDIRECT

4" PIPE
& FITTINGS

2" PIPE
& FITTINGS

VENT (1 PIPE SYSTEM)
-MAXIMUM
EQUIVALENT
FEET FOR
VENT PIPE ONLY (See Notes)
2-1/2" PIPE
& FITTINGS

3" PIPE
& FITTINGS

TOTAL

4" PIPE
& FITTINGS

*UCIB040A9241A

100

130

*UC1B060A9361A

100

130

*UC1B080A9421A

100

130

*UClC080A9601A

100

130

130
130

*UCl C100A9481A

NOT ALLOWED

100

130

NOT ALLOWED

*UCl D100A9601A

NOT ALLOWED

100

130

NOT ALLOWED

130

*UC1D120A9601A

NOT ALLOWED

130

NOT ALLOWED

130

NOTES:
* - First letter may be "A" or "T"
1. The INLET AIR of one pipe systems require the installation of a 90 ° elbow (to prevent dust and debris from falling straight into thefurnace) and a 2 foot
horizontal or vertical straight pipe section connected before or after the elbow.
2. DO NOT MIX PIPE DIAMETERS IN THE SAME LENGTH OF PIPE OUTSIDE THE FURNACE CABINET (Except adapters at the top of the furnace).
If different inlet and vent pipe sizes are used, the vent pipe must adhere to the maximum length limit shown in the table above (See Note 7 below for exception).
The inlet pipe can be of a larger diameter, but never smaller than the vent pipe.
3. MAXIMUM PIPE LENGTHS MUST NOT BE EXCEEDED! THE LENGTH SHOWN IS NOT A COMBINED TOTAL, IT IS THE MAXIMUM LENGTH OF EACH
(Vent or Inlet air pipes in two pipe systems).
4. One standard radius 90 ° elbow is equivalent to 12' of 4" pipe; one SHORT radius 90° elbow is equivalent to 10' of 3" pipe and one LONG radius elbow is
equivalent to 6' of 3" pipe. One SHORT/LONG radius 90 ° elbow is equivalent to 71/2' of 21/2 pipe, & 5' of 2" pipe. Two 45° elbows equal one 90°elbow.
5. The termination tee or bend must be included in the total number of elbows. If the BAYVENT100 termination kit is used, the equivalent length of pipe is 5 feet.
There is zero equivalent length for the BAYVENT200.
6. Pipe adapters are field supplied.
7.4" pipe may be reduced to 3" for termination with BAYAIR30AVENTA or BAYVENT200 without additional length restriction.

18-CD19D5-21

Installer's

Guide
DOWNFLOW/HORIZONTAL VENTING TABLE
TABLE 9

MAXIMUM VENT LENGTH:
DIRECT VENT (2 PIPE SYSTEM)MAXIMUM TOTAL EQUIVALENT
FEET FOR
VENT AND INLET AIR PIPES (See Notes)
2" PIPE
& FITTINGS

2-1/2" PIPE
& FITTINGS

*DC1 B040A9241A

100

130

*DCl

B060A9361A

100

130

*DCl

B080A9421A

100

130

MODEL

3" PIPE
& FITTINGS

NONDIRECT
VENT (1 PIPE SYSTEM)MAXIMUM TOTAL EQUIVALENT
FEET FOR
VENT PIPE ONLY (See Notes)

4" PIPE
& FITTINGS

2" PIPE
& FITTINGS

2-1/2" PIPE
& FITTINGS

3" PIPE
& FITTINGS

4" PIPE
& FITTINGS

*DC1C100A9481A

NOT ALLOWED

100

130

NOT ALLOWED

130

*DCl

NOT ALLOWED

130

NOT ALLOWED

130

D120A9601A

NOTES:
* - First letter may be "A" or "T"
1. The INLET AIR of one pipe systems require the installation of a 90° elbow (to prevent dust and debris from falling straight into the furnace) and a 2 foot
horizontal or vertical straight pipe section connected before or after the elbow.
2. DO NOT MIX PiPE DIAMETERS IN THE SAME LENGTH OF PIPE OUTSIDE THE FURNACE CABINET (Except adapters at the top of the furnace).
If different inlet and vent pipe sizes are used, the vent pipe must adhere to the maximum length limit shown in the table above (See Note 7 below for exception).
The inlet pipe can be of a larger diameter, but never smaller than the vent pipe.
3. MAXIMUM PiPE LENGTHS MUST NOT BE EXCEEDED! THE LENGTH SHOWN IS NOT A COMBINED TOTAL, IT IS THE MAXIMUM LENGTH OF EACH
(Vent or Inlet air pipes in two pipe systems).
4. One standard radius 90° elbow is equivalent to 12' of 4" pipe; one SHORT radius 90 ° elbow is equivalent to 10' of 3" pipe and one LONG radius elbow is
equivalent to 6' of 3" pipe. One SHORT/LONG radius 90° elbow is equivalent to 7Y2' of 2V2" pipe, & 5' of 2" pipe. Two 45 ° elbows equal one 90°elbow.
5. The termination tee or bend must be included in the total number of elbows. If the BAYVENT100 termination kit is used, the equivalent length of pipe is 5 feet.
There is zero equivalent length for the BAYVENT200.
6. Pipe adapters are field supplied.
7.4" pipe may be reduced to 3" for termination with BAYAIR30AVENTA or BAYVENT200 without additional length restriction.

SINGLE PIPE VENTING

UPFLOW
(I--B--I
E:_>_
Air Inlet

DOWNFLOW
FURNACE

FURNACE

- _.
"_
;

A (0-2') or greater

_..__

_nt
only
= to outside

B (0-2')
greater
A+B
= 2'orminimum

_VeVe
_

A = 2' minimum

nt only
to outside

:H
S

....

r-_

VENTTERMINAL

(_)

AIR SUPPLY

INLET

[]

AREAWHERETERMINAL

IS NOT PERMITTED

18-CD19D5-21

Installer's

Guide

Direct Vent Terminal Clearances
Canadian Installations
Clearance
balcony

above grade, veranda, porch, deck, or

Clearance

to window or door that may be opened

Clearance

to permanently

12 inches (30 cm)

Vertical clearance to ventilated

6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 12
inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/<
100,000 Btuh (30 kw), 36 inches (91 cm) for appliances >

6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 9
inches (23 cm) for appliances > 10,000 Btuh (3 kw) and =/<
50,000 Btuh (15 kw), 12 inches (30 cm) for appliances > 50,000

100,000 Btuh (30 kw)

Btuh (15 kw)

soffit located above the

terminal within a horizontal distance of 2 feet (61 cm)
from the center line of the terminal

Clearance

to unventilated

Clearance

to outside corner

Clearance

to inside corner

soffit

Clearance to each side of center line extended above
meter/regulator assembly

Clearance

3 feet (91 cm) with a height 15 feet (4.5 m) above the
meter/regulator assembly

to service regulator vent outlet

3 feet (91 cm)
6 inches (15 cm) for appliances

=/< 10,000 Btuh (3 kw), 12

Clearance to nonmechanical air supply inlet to building
or the combustion air inlet to any other appliance

Clearance

to a mechanical air supply inlet

6 feet (1.83m)

Clearance above a paved sidewalk or paved driveway
located on public property

7 feet (2.13 m) t

M-

Clearance

under veranda,

12 inches (30 cm)

closed window

G-

US Installations

inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/<
100,000 Btuh (30 kw), 36 inches (91 cm) for appliances >
100,000 Btuh (30 kw)

porch, deck, or balcony

6 inches (15 cm) for appliances

=/< 10,000 Btuh (3 kw), 9

inches (23 cm) for appliances > 10,000 Btuh (3 kw) and =/<
50,000 Btuh (15 kw), 12 inches (30 cm) for appliances > 50,000
Btuh (15 kw)
3 feet (91 cm) above if within 10 feet (3m) horizontally

"12 inches (30 cm) :_

Notes:
1.
2.

In accordance
In accordance

with the current CSA B149.1 Natural Gas and Propane Installation
with the current ANSI Z223.1/NFPA 54 National Fuel Gas Code.

Code.

1. A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwelling and serves both dwellings.
:_. Pemitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer's Installation Instructions.

Non-Direct Vent Terminal Clearances
Canadian

Clearance above grade, veranda, porch, deck, or
balcony

Clearance to window or door that may be opened

Installations

US Installations

12 inches (30 cm)
6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 12
inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/<
100,000 Btuh (30 kw), 36 inches (91 cm) for appliances >

12 inches (30 cm)

4 feet (1.2m) below or to the side of opening; 1 foot (0.3m)
above opening.

100,000 Btuh (30 kw)
C=

Clearance to permanently closed window
Vertical clearance to ventilated soffit located above the

terminal within a horizontal distance of 2 feet (61 cm)
from the center line of the terminal

Clearance to unventilated soffit

Clearance to outside corner

Clearance to inside corner

Clearance to each side of center line extended above
meter/regulator assembly

Clearance to service regulator vent outlet

Clearance to nonmechanical air supply inlet to building
or the combustion air inlet to any other appliance

Clearance to a mechanical air supply inlet

Clearance above a paved sidewalk or paved driveway
located on public property

Clearance under veranda, porch, deck, or balcony

3 feet (91 cm) with a height 15 feet (4.5 m) above the
meter/regulator assembly
3 feet (91 cm)
6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 12
inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/<
100,000 Btuh (30 kw), 36 inches (91 cm) for appliances >
100,000 Btuh (30 kw)
6 feet (1.83m)

4 feet (1.2 m) below or to side of opening; 1 foot (300 m) above
opening

3 feet (91 cm) above if within 10 feet (3m) horizontally

7 feet (2.13 m) 1"

7 feet (2.13 m)

"12 inches (30 cm)

Notes:
1. In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code.
2. In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Code.
1". A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwelling and serves both dwellings.
$. Pemitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer's Installation Instructions.

18-CD19D5-21

Installer's

Guide

ELBOW AND TEE MUST BE -_
AS CLOSE TOGETHER
AS POSSIBLE

MAX 4

POSSIBLE CONFIGURATIONS FOR TWO PIPE VENTING SYSTEMS
tripping of the pressure
switch(es).
The amount of
change can not be predicted. The selection of the inlet
and outlet terminal locations are the responsibility
of
the designer/installer.
If the installer chooses separate
pressure
zones for the terminals, the combustion
air
inlet termination must be in the higher (more positive)
pressure
zone.

HORIZONTAL

HORIZONTAL VENTING THROUGH WALL
These furnaces may be installed
shipped)
or as nondirect
vent.

as direct vent (as
Installation
must

VENTING

NOTE:
Vent
termination
kit
BA YAIR3OAVENTA*
or
BAYVENT2OOB may be used instead of the horizontal
and vertical termination options shown in the following figures.

When the vent pipe is exposed to temperatures below
freezing, i.e., when it passes through unheated spaces,
etc., the pipe must be insulated with 112 inch (22.7 mm)
thick Armaflex-type insulation or equal. If the space is
heated sufficiently to prevent freezing, then the insulation would not be required. If domestic water pipes are
not protected from freezing then it is assumed the
space meets the condition of a heated space.

12' MINIMUM
TO OVERHANG

SCREWS
(4 req,)

/
VENT
CAP
MAINTAIN 12" (18" FOR CANADA)
MINIMUM
CLEARANCE
ABOVE HIGHEST ANTICIPATED
SNOW LEVEL OR GRADE
WHICHEVER
IS GREATER

BAYVENT2OOB
conform

to national,

state,

and local

"" "
codes.

18-CD19D5-21

Installer's
The vent & inlet terminals

must be located

at least

12"

minimum above normally expected snow accumulation
level.
Avoid areas where staining or condensate drippage may
be a problem.
Location of the vent/wind
terminal should be chosen to
meet the requirements
of Figure 26 for either direct or
non-direct vent applications.
PITCH - Venting through the wall must maintain 1/4"
per foot pitched
upward to insure that condensate
drains back to the furnace.
FLUE GAS DEGRADATION
- The moisture content

Also, silicone caulk all cracks, seams
feet of the vent terminal.

PVC
MOUNT

COUPLING
( PLASTIC
VENTING )

Guide
and joints within 3

WALL
FLANGE

(OPTIONALt

APPROVED
TERMINATION

]_ II(TO61N.
MIN.
JOINT

of the flue gas may have a detrimental
effect on some
building materials.
This can be avoided by using the

iiiliiiiiii_iii!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!!i!;iiii

CEMENT

12" MIN.ABOVE
NORMALLYEXPECTED
SNOWACCUMULATION

MORTAR SEAL
INSIDE &
OUTSIDE

VENTING THROUGH NON-COMBUSTIBLE
Pitch - 1/4 Inch Per Ft.

@
BAYAIR30AVENTA
(Sidewall)

SUPPORT HORIZONTAL PIPE EVERY 3'
0" WITH THE FIRST SUPPORT AS
CLOSE TO THE FURNACE AS POSSIBLE,
INDUCED DRAFT BLOWER, HOUSING,
AND FURNACE MUST NOT SUPPORT
THE WEIGHT OF THE FLUE PIPE,
IRSI
lACE

OWE&

IE PIPE.

WALLS

COUPLING
( PLASTIC
VENTING

MOUNT FLANGE

'_1";

i I I

I I I I

(OPTIONAL)
coupuNa

;IN. MII
APPROVED
1 ( 0 dOI h

[[J,
-[
1" CLEARANCE
(AIR SPACE

TERMINATION

j!1
°""LL/

IL
40"

UPFLOW

HORIZONTAL

OR DOWNF

AND

LOV_

VERTICAL

FURNACE

VERTICAL

NORMALLY
EXPECTED
SNOW ACCUMULATION

)

VENTINGTHROUGH COMBUSTIBLEWALLS
Pitch-- 1/4 InchPer Ft.
CLEARANCE ( 0" ACCEPTABLE FOR PVC VENT PIPE )
( 1" ACCEPTABLE FOR TYPE 29-4C STAINLESS STEEL VENT PIPE )

roof or chimney venting option. When wall venting is
used on any surface that can be affected by this moisture, it is recommended
that a corrosion resistant
shield (24 inches square) be used behind the vent terminal. This shield can be wood, plastic, sheet metal, etc.

18-CD19D5-21

Installer's

Guide

IMPORTANT:

The Commonwealth
of Massachusetts
requires
compliance
with regulation
248 CMR 4.00 and 5.00 for installation
of
through - the - wall vented gas appliances
as follows:
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 backup 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

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.
This appliance
requires a special venting system.
If
BAYAIR30AVENTA
or BAYVENT200B
are used, a copy of
the installation
instructions
for the kit shall remain with
the appliance
or equipment
at the completion
of
installation.
The venting
system installation
instructions
can be obtained from the manufacturer
by writing to the
following address:
American
Standard,
6200 Troup Highway
Tyler, TX 75707
Attention:
Manager

Inc.

of Field

Operations

Excellence

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".

18-CD19D5-21

Installer's

SEE VENTING

NOTE: VENT AND INLET MUST BE SUPPORTED
AT A MAXIMUM OF 3' INTERVALS

TABLE

STRAPS OR OTHER SUITABLE SUPPORTS
AT MAXIMUM OF 3'-0" INTERVALS

Guide

USE ONLY
APPROVED
TERMINATIO_

COMBUSTION
AIR INLET

1
40" UPFLOW
DOWNFLOW

n
FIRST SUPPORT
AS
'_UPWARD
PITCH SHOULD
-- 1/4" PERBE
FOOT
CLOSE TO FURNACE CONNECTION
AS POSSIBLE.

OR
MODELS

OUTSIDE
WALL

NOTE: ANY FITTINGS
PASSING
THROUGH
AN UNHEATED
SPACE
MUST

BE INSULATED.

45' ELBOW

TEE

OUTSIDE
WALL

STUB CUT AT
45" ANGLE

I_
STRAP

COMBUSTION
/

REDUCING

AIR

COUPLING,
FIELD SUPPLIED
IF NEEDED
VENT

2", 2-1/2"
or 3"

_c_,°°__i°_o, _ I_''-_I:°'
BA YAIR30AVENTA

18-CD19D5-21

3" PIPING

BA YVENT2OOB

WALL CAVITIES

Installer's

Guide

DOWNWARD
VENTING
@
Furnace may be in vertical or horizontal configuration.
f
f

DOWNWARD VENT
LENGTH IS LIMITED

NOTE:
No vent cap as shown in Figure 35 is the preferred
method for vertical vent termination in extremely cold
climates.
In extreme climate conditions, insulate the exposed
pipe above the roof line with Armaflex type insulation.

TO A MAXIMUM OF 15
EQUIVALENT FEET.

®
40 Inch
__ Upflow or
Downflow
Furnace
Slope

24" MAX.

VENT_

12' ± 1' __N

1/4" per ft.

9"m.,L
MAII_AIRED
ABOVE HIGI-E_
] 2-1RCH CLF_p_NCE
MuST BE
AN]]CIPATED
SNOW
LEVEL

iNCHES

ABOVE

gOOE

DISTANCE FROM TOP
OF
OF

VENT
TO
AIR
INLET

BO]TOM
MUll

_1_

BE 12" ± l"

Slope

4LI_
_

......

EXCEED

)
/

1/4" per ft,

COMBUSTION

-._-__._

All horizontal pipes must be supported
at a maximum of 3 foot intervals
NOTES:
A) Condensate trap for vent pipe must be a minimum of 6 inches in height.
B) Condensate trap for vent and inlet pipe must be
connected into a condensate drain pump; an
open or vented drain; or it can be connected to
the outlet hose of the furnace's condensate trap.
Outdoor draining of the furnace and coil condensate is permissible if allowed by local codes. Caution should be taken to prevent drains from freezing or causing slippery conditions that could lead
to personal injury. Excessive draining of condensate may cause saturated ground conditions that
may result in damage to plants.
C) The condensate trap should be primed at initial
start up prior to heating season operation.
COMBUSTIBLE MATERIAL WALL
A minimum
clearance of 1" to combustible
materials
must be maintained
when using single wall stainless
steel venting. See Figure 30.
Shield material to be a minimum of 24 gauge stainless
or aluminized
sheet metal. Minimum dimensions
are
12"x12". Shield must be fastened to both inside and outside of wall. Use screws or anchor type fasteners
to the outside or inside wall surfaces.
NONCOMBUSTIBLE MATERIAL WALL
The hole through the wall must
maintain pitch of vent and properly
Use cement mortar seal on inside

suited

be large enough to
seal.
and outside of wall.

See Figure 31.
VENTING THROUGH THE ROOF
When penetrating
roof with a 2" PVC vent pipe, a 2"
electrical conduit flashing may be used for a weather
tight seal. Lubricate flexible seal on flashing before PVC
pipe is pushed through the seal. (Field Supplied)

MAINTAIN 12 IN.
(18 IN. FOR CANADA)
ABOVE HIGHEST
ANTICIPATED
SNOW
LEVEL. MAXIMUM OF
24 IN, ABOVE ROOF.

BAYAIR30AVENTA

VENT
REMOVE
FROM

RIBS

12 IN.

(18 IN. FOR CANADA)
MINIMUM
CLEARANCE

CAP

COMBUSTION
AIR

ROOF

MAINTAIN

ANTICIPATED
SNOW
LEVEL. MAXIMUM
OF
ABOVE HIGHEST
24 IN. ABOVE ROOF

BOOT

suP o.+'
(FIELD SUPPLIED)

ELBOW
(FIELD SUPPLIED)

COMBUSTION
AIR

18-CD19D5-21

Installer's
VENTING ROUTED THROUGH A MASONRY CHIMNEY
VENT FITTING MATERIAL - STAINLESS STEEL
Gas and liquid tight
signed for resistance

SEAL BETWEEN

FLANGE, PIPE,

COUPLING AND METAL PANEL
WITH HI TEMP RTV SILICONE SEALANT

single wall metal vent fitting, deto corrosive flue condensate
such

Guide

SEAL BETWEEN FLANGE, PIPE,
COUPLING AND METAL PANEL
WITH HI TEMP RTV SILICONE SEALANT

SUPPORT
FLANGE

C_COUPLING

suPPOR,
.""7.

ESTO P )

FLOOR
i

.u
FLUE PIPE

CLEARANCE
CLEARANCE(0"
ACCEPTABLE
FOR PVC VENT PIPE)
( 1" ACCEPTABLE
FOR TYPE 29-4C STAINLESS
STEEL VENT

(0" ACCEPTABLE FOR PVC VENT PIPE )
{1"ACCEPTABLE FOR TYPE 29-4C STAINLESS STEELVENT PIPE )

PIPE )

VENTING THROUGH CEILING
(_

TYPE 29-4C STAINLESS STEEL VENTING USED THROUGH CHIMNEY THAT VENTS
ANOTHER GAS APPLIANCE

STAINLESS

PVC PLASTIC VENTING - ONLY
THROUGH UNUSED CHIMNEY

STAINLESSSTEEL
VENTCAP

STEEL

VENTCAP

(OPTIONAL)
(OPTIONAL)
"E CAUTION

•

6 IN. MIN.

FLUE PIPE

SUPPORT
THE SINGLE WAI
STAINLESS
STEEL GAS
VENTING
AND CENTER IT IP
THE CHIMNEY
OPENING
WI'

SUPPORT
THE SINGLE
WALL FLUE PIPE AND
CENTER IT IN THE
CHIMNEY
OPENING
WI
ANGLES AS SHOWN O
ANOTHER
EQUIVALEN
MANNER.

3UPLING TO SUPPORT
PE FROM ANGLES
R OTHER SUITABLE
JPPORT METHOD

ANGLES
AS SHOWN OR
ANOTHER
EQUIVALENT
MANNER.

COUPLING
AS REQUIRED

FLUE PIPE,

NOTE:
HORIZONTAL
TO VERTICAL

VENTING
VENTING

Do not run vent through chimney for wood burning or oil
furnaces or incinerators.
If remaining free area between single wall flue pipe and
masonry chimney is to be used for another gas appliance venting area must be sufficient to vent that appliance and that appliance must be connected to chimney
with
separate entry openings.
IMPORTANTThe single wall flue pipe joints must be sealed.
The 90 ° elbow connection to vertical pipe must be sealed to
prevent condensate leakage to base of masonry chimney.

18-CD19D5-21

NOTE:
HORIZONTAL
TO VERTICAL

VENTING
VENTING

Do not run vent through chimney for wood burning or oil
furnaces or incinerators or any other gas appliance.
IMPORTANTThe single wall flue pipe joints must be sealed.
The 90 ° elbow connection to vertical pipe must be sealed to
prevent condensate leakage to base of masonry chimney.

as Type 29-4C MUST be used throughout.
These fittings and fitting accessories are to be supplied
locally.

Installer's

Guide

When the factory
supplied
"off-set" (2X3 reducing
coupling) is used for 3" vent pipe installation,
make sure
the marking
"Top" is located on the top side of the pipe.
The straight
side must be on bottom
for proper
condensate drainage.
This coupling is factory supplied
only with
the following models:
UC120 & DC120, UX120 & UY120,
UX100 & UY100, UX808C960,
and All DX & DY models.
WHEN

THE

REDUCING

FACTORY

SUPPLIED

COUPLING)

IS USED

"OFF-SET"

DRAIN

INSTRUCTIONS

V!I [,_llili[.]_l
IT IS RECOMMENDED

THAT A DRAIN PAN BE INSTALLED

UNDER THE FURNACE TO PREVENT PROPERTY DAMAGE,
PERSONAL INJURY OR DEATH FROM LEAKING CONDENSATE.

(2X3

FOR 3" VENT

INSTALLATION,
MAKE SURE THE MARKING
LOCATED ON THE TOP SIDE OF THE PIPE.

CONDENSATE

VERTICAL APPLICATIONS

PIPE

"TOP"

Upflow
furnace
- The connection tubing for left and
right side drainage is shipped in the blower compartment. Install the connection tubing from the trap to the
side of the unit and trim all excess tubing to avoid
kinks.

LABEL
SAYS
"TOP"

Downflow
furnace
- The furnace is shipped with the
left side drainage setup. To change the right side drain,
remove the drain lines from the trap, rotate the trap
180 ° so it exits to the right, reconnect the lines, and run
a 1/2" CPVC pipe from the trap out through the right
side knock-out. Use RTV silicone sealant to connect the
CPVC pipe to the trap for ease of removing
trap.

STRAIGHT SIDE MUST BE
ON BOTTOM FOR PROPER
CONDENSATE DRAINAGE,

to clean the

FACTORY SUPPLIED ONLY WITH
THE FOLLOWING MODELS:
UC120 & DC120
UX120 & UY120
|

UX100 & UY100
UX080C960

Right side
ODLES

UPFLOW (VERTICAL)
OUTLET

DIRECTION OF STAINLESS STEEL FITTING
All stainless steel fitting
end towards the furnace.

must be installed

with male

All horizontal
stainless
steel sections must be positioned with the seam on top.
All long horizontal
sections must be supported to prevent sagging.
All pipe joints must be fastened and sealed to prevent
escape of combustion products into the building.
NOTE:
Both venting methods shown in Figure 39 & 41 must
also have the combustion air inlet installed - meeting
dimension requirements of Figure 35.
26

Left side

UPFLOW (VERTICAL)
18-CD19D5-21

Installer's

Use CPVC tubing from Trap outlet,
over burner box to cabinet exit

DOWNFLOW (VERTICAL)
HORIZONTAL APPLICATIONS
Upflow and Downflow furnaces - All horizontal applications are left side only. It is always recommended
that the auxiliary drain pan be installed under a horizontally installed evaporator
and/or 90% gas furnace.
Connect the axillary drain pan to a separate drain line
(no trap is needed in this line).
The trap must be repositioned
to the exterior of the
cabinet. Remove the trap from its present location and
reposition the trap outside of the unit, through the long
circular hole, next to the secondary recuperative
cell.
Remove the larger drain line (from the secondary cell)
and trim to fit between the secondary cell and the new
trap location. On upflow units, plug the hole in the
blower deck where the tube went through.
Remove the hose from the induced blower and reposition into the other drain tap of the inducer, which is located 90 ° clockwise around the inducer. Move the cap
from that drain tap to the unused drain tap. On upflow
units, plug the hole in the blower deck where the tube
went through. This tube on downflow units will need to
be cut to fit between the inducer and the trap. On
upflow units, this tube may need to be extended, using
the tubing shipped with the furnace.
Connections
must be made to an OPEN/ VENTED
DRAIN.
Outdoor draining of the furnace and coil condensate is permissible if allowed by local codes. Caution
should be taken to prevent drains from freezing or causing slippery conditions that could lead to personal injury. Excessive draining of condensate may cause saturated ground conditions that may result in damage to
plants.
NOTE:
Use 1/2" or larger PVC or CPVC pipe and fittings as required for drain connections (fittings, pipe and solvent
cement not provided).
NOTE:
A corrosion resistant condensate pump must be used
if a pump is required for a specific drain system.

18-CD19D5-21

UPFLOW HORIZONTAL 17" UNITS
(Left side only)

Guide

Use Inducer Drain
hose without
extension

IMPORTANT:
The condensate drain should be installed with provisions to
prevent winter freeze-up of the condensate drain line. Frozen condensate will block drains, resulting in furnace shutdown. If the drain line cannot be installed in a conditioned
space, then UL listed heat tape should be applied as required to prevent freezing (per manufacturer's
instructions).
The heat tape should be rated at 5 or 6 watts per foot at
120volts.
Self-regulating
(preferred)
or thermostatically
controlled heat tape is required.

Evaporator
and furnace condensate
be manifolded
together. A primary
must be installed
and terminated
the secondary heat exchanger drain
vent water from damaging furnace
mary drain outlet plugs up. Where
stalled above a finished ceiling, the
stack must be installed such that
vent stack opening
in order to prevent
below.

drain
piping may
drain vent stack
below the outlet of
connection to precontrols if the prithe furnace is inprimary drain vent
overflow from the

will flow into an auxiliary drain pan
water damage to the finished ceiling

Use

extension
hose here

UPFLOW HORIZONTAL 21" & 24" UNITS
(Left side only)

Installer's

Guide
ELECTRICAL CONNECTIONS
Make wiring connections to the unit as indicated on enclosed wiring diagram. As with all gas appliances using
electrical power, this furnace shall be connected into a
permanently
live electric circuit. It is recommended
that furnace be provided with a separate "circuit protection device" in the electric circuit. The furnace must be
electrically grounded in accordance with local codes or
in the absence of local codes with the National Electrical Code, ANSI/NFPA 70 or CSA C22.1 Electrical Code,
if an external electrical source is utilized.

upflow

over

the

stack

is installed
ceiling,

primary

must

drain
the

furnace

a finished

from

pan

flow
to

finished

prevent
ceiling

Primary
drain
must
terminate
secondary
condensate

overflow

drain
into

vent

The integrated
furnace
control is polarity
sensitive. The hot leg of the 120V power supply must be connected to the black power lead as indicated on the wiring diagram. Provision for hooking up an electronic air
cleaner and or humidifier is provided on the integrated
control.
Refer to the SERVICE FACTS literature and unit wiring
diagram attached to furnace diagram attached to furnace.

auxiliary

damage

below,

vent
stack
below

heat exchanger
drain
outlet,

To drain

opening

FIELD

!.................................
_......
I)

WIRING

DIAGRAM

USING

FOR

1 STAGE

FURNACE

1 STAGE HEATING
A 1 STAGE HEATING THERMOSTAT
NO COOLING

T'STAT

FURNACE
SEE
NOTE 7

Fq
D

NOTES '
I
2
5
4
5

BE SURE POWERAGREESWITH EQUIPMENT NAMPLATE(S),
LOW VOLTAGE (24V. WIRING) TO BE NO. 18 A.W,G. MIN..
GROUNDINGOF EQUIPMENTMUST COMPLY WITH LOCAL CODES,
SET THERMOSTATHEAT ANTICIPATOR PER UNIT WIRING DIAGRAM,
THESE LEADS PROVIDE 115 V, POWERFOR CONNECTIONOF ELECTRONIC AIR
CLEANER AND HUMIDIFIER MAX. LOAD 1.0 AMPS EACH,
THIS CONNECTION IS ONLY USED FOR THERMOSTATSREQUIRING
CONNECTIONTO THE 24 V, POWERSUPPLY, (COMMON)
SEE TWINNING CONNECTIONDIAGRAMSFOR PROPERCONNECTIONS
WHENUSING THIS FEATURE,

GROUND

j_-

,ll
i

FURNACE
JUNCTION
BOX

SEE

D
INTER

NOTE 6

TO 115V 1PH.,
60 HZ.,POWER
SUPPLY PER
LOCAL CODES

L
LHN

C,_ MP,_ blENT ?',iI_ING
24

'v'.

----

LINE

24 v'.
L I I' E

_FIELD
WI< I N O
FA( •(}RY
'¢,J
I:4 I N ',

HUM SEE
NOTE5

WIT J
BK/2

EAC SEE

NOTE5

L
From drawing B341437 Rv 1

18-CD19D5-21

Installer's

Guide

FIELD WIRING DIAGRAM FOR 1 STAGE FURNACE
1 STAGE HEATING, 1 STAGE COOLING
USING A 1 STAGE HEATING, 1 STAGE COOLING THERMOSTAT
(OUTDOOR SECTION WITHOUT TRANSFORMER)
T'STAT

FURNACE

NOTES
OUTDOOR

UNIT

(NO TRANSFORMER)

3,
4.
5,

SEE
NOTE 6

D
SEE
NOTE 8

I, BE SURE POWER
2. LOW VOLTAOEI24

AGREES
WITH
EQUIPMENT
NAMEPLATE',SI
V. WIRING
TO F_E NO, 18 A.W.O.
MIN.

GROUNDING
OF EQUIPMENT
MUST
COMPLY
WITH
LOCAL
SET THERMOSTAT
HEAT
ANTICIPATOR
°ER
UNIT
WIRING
THESE
LEADS
PROVIDE
115 V, POWER FOR CONNECTION

THIS CONNECTION
IS ONLY
CONNECTION
TO THE 24 V.

USED FOR THERMOSTATS REQUIRING
POWER SUPPLY,
(COMMON)

T--_-_--_
I _ _1"

1 STAGE
HEATING/ COOLING
THERMOSTAT

FA{}•(}

CODES

WH/II

I ',

I_
L N

J --'_1

I,_

HUM SEE
NOTE5

LBI,._I__

I
BK/2

I I

Y,,i[,_ I O

EAoCTESEE L'-_K

From

TWINNING CONNECTION DIAGRAM
FOR TWINNING 1 STAGE FURNACES WITH
SINGLE WIRE TWINNING FEATURE
1 STAGE HEAT/1 STAGE COOLTHERMOSTAT
FURNACE NO.1

BLOWER
UNIT

OPERATION

B340388

R_,

_OTF _U_t,'AC_5¸ _'UST B_ PO_E£[B #IrOn'
THF SAME l_Sv
_ ES OF C_CUiT PANE_

_NSU/_ 24V

2 IS SYNCRONIZED

WITH
UNIT
NO
1 VIA SIGNALS
FROM
TWIN
CONNECTION

FU_N4C_ TIf4NSFO_,_R_ AIM

C_C_ VOLTAGE_ET,CEE_ R ¸ TERmiNALS 0#
_A_fl _URN_C_ _# VO_TAG_
¸ /S CRTAT,_£ THAN
_OY, R_Y_£SE TH_ 8L 4N £D S_¢O;',iD_R_"_£4D$
0_' 0_£ OF T,,£ rUR_'A_¸_ T_At,,_SrOR'_E#5
_# OUTDOOR
_
/5OLAT;ON

(_/EL_
(_C_

drawing

AOT S

FURNACE NO.2

: c>a!'-ox ;
(HELD SUPPUED)
_SOLAT_ON RELAY
SEE NOTE 3

.W_H __i_

%%
I

LOCAL

....

rWHI

"< FIEL;_}
,/. i "/VIF_I (}

2 4 ",/.
--LINE

Y',i

/
1

sox

BKI I_

POWER
/
PER

FURNACE
JUNCTION

r- ,H

{} }\,,/

AIR

CLEANER
AND H'JMIDIFIER
MAX, LOAD
1,0 AMPS EACH.
THE
"Y" TERMINAL
FROM
THE THERMOSTAT
MUST
BE WIRED
TO THE
"Y'° TERMINAL
OF THE FURNACE
CONTROL
FOR PROPER
BLOWER
OPERATIOK
DURING
COOLING.
IGNITION
CONTROL
IS POLARITY
SENSITIVE,
HOT LEG
OF 120 VOLT
POWER
SUPPLY
MUST
BE CONNECTED
TO THE BLACK
LINE
POWER LEAD
AS [NDICAT
ON THE WIRING
DIAGRAM
0R IGNITION
LDCKOUT
WILL
DCCUR,

',1

ZN•E

CODES,
DIAGRAM.
OF ELECTRONIC

UIDT
_A5 A 24i'
£L,iAF
MiJST _

50PPLIED
SUCH

TRAPdSFORMER,
it',iSTAii#D

5iSE P_LOT
_5 ¸

R_ _09;'5J

BUT_
_

RELAF

A_ T

CO_t,,'_CT_O_

I
SEE

NOTE

OUTDOORUNIT
(NOTRANSFORMER)

SHOiY£ (90 *_OT O£# GT # TO i_')
;SO AT ON £MAF NOT N'_EDED # T_E TF[Rt#OST4T
CONTACTS4e# £ATED _T _OA OR ABOVE

dOt,,rN_CTbDN_AY _

RGOU/R_D FOR #L_£TROt,H_

__LL_;

L,_o,_,2.%.#?pY
INTER

CON,
4

PONENT

TEfNATE

'v'.

----LINE

.j
24

%
•

18-CD19D5-21

SEENOTE5

['_'____

i_ PltIG

--LINE

WIRING
"ONf

I_],_)4T[IgN

_ FIELD
VN,'I_ING
h

FACTORY

v'./_vNIRIN

From Dwg. 21 B341423

Rev. 2

Installer's

1 STAGE HEAT
ONLY
THERMOSTAT

Guide
TWINNING CONNECTION DIAGRAM
FOR TWINNING 1 STAGE FURNACES WITH
SINGLE WIRE TWINNING FEATURE
1 STAGE HEATING ONLY THERMOSTAT
FURNACE NO. 1

(WITH FAN SWITCH)

FURNACE NO. 2
NOTES

BLOWER
OPERATION
OF
UNIT NO. 2 IS SYNCRONIZED
WITH UNIT NO. 1 VIA SIGNALS
FROM TWIN CONNECTION.

BOTH FU?NAC[5
THF GAMF liSY

t4i'$T
L[{

B[ P(,b'U?[D
FROV,
OF {IY_{LI
T PAN[L

iNSURF
24V
FURNACF IRANSFORHFRS
ARk
iN PHAS£
PRIOR TO COXPIEIINC
CONNFCT/ONS,
CHFCK VOLTAGE BFTWFEN 'R"
TERMINALS
Of
[ACH
#URNAC£
iF VOLM6#
iS GRLATER
THAN
iOv
, REVERSE TR[ BL AN RD SFCONDARY LEADS
ON ON# OF THE _URNACE TRANSFORM#RS
DONNECTION
£L£DTROtHC

SEE NOTE

ISOLATION

RELAY

(FIELD
SUPPLIED)
SEE NOTE 4

;OR

iF CURRENT LXDLEDS
THER#OSTAT CURRENT
RATING,
USk I$OiAIION
REiAYS
('Ri)
AS
SHOWN
iDO NOT CON#ECi
W TO #)
ISOLATION
RLiAY
TOT NEEDED iF iNE THERMOSTAI
CONTACIS
ARL RATED AT IOA
OR ABOVL

r----1

RllqI

I
ISOLATION
SEE

RELAY

NOTE

INTER

C0t,dPONEN•

.........

SEE NOTE 3

,,",IRIN©

At T NNAT_ _H!?ING 0NF
S
COT a

From Dwg. 21 B341422

'Ix.

iGiJR4T

FIEL

'k FA{}•ORY

Rev. 3

TWINNING FURNACES
EXPLOSION HAZARD!
PROPANE GAS IS HEAVIER THAN AIR AND MAY
COLLECT IN ANY LOW AREAS OR CONFINED
SPACES. IN ADDITION, ODORANT FADE MAY MAKE
THE GAS UNDETECTABLE EXCEPT WITH A WARNING DEVICE. IF THE GAS FURNACE IS INSTALLED

These furnaces may be twinned. Twinning requires that
two furnaces with the same configuration, capacity, and
airflow must be used. They shall have common returns
with equal pressure
drops or duets with equivalent
lengths and sizes. See Field Wiring Diagrams for proper
hookup.

IN A BASEMENT, AN EXCAVATED AREA OR A
CONFINED SPACE, IT IS STRONGLY RECOMMENDED TO CONTACT A GAS SUPPLIER TO INSTALL A GAS DETECTING WARNING DEVICE IN
CASE OF A GAS LEAK.
NOTE: The manufacturer of your furnace does NOT test
any detectors and makes no representations regarding
any brand or type of detector.

18-CD19D5-21

Installer's
GAS PIPING
The upflow/horizontal
furnace is shipped standard for
left side installation
of gas piping. A knock-out is provided on the right side for an alternate gas piping arrangement.
See Figure 46.
The installation
of piping shall be in accordance with
piping codes and the regulations
of the local gas company. Pipe joint compound must be resistant
to the
chemical reaction with liquefied petroleum gases.
Refer to piping Table 10, for delivery sizes. Connect gas
supply to the unit, using a ground joint union and a
manual shut-off valve as shown in Figures 46-48.
National codes require a condensation
drip leg to be installed ahead of the controls as shown in Figures 46-48.
The furnace and its individual shut-off valve must be
disconnected from the gas supply piping system during
any pressure testing of that system at test pressures in
excess of 1/2 psig (3.5 kPa).

AUTOMATIC GAS VALVE
WITH MANUAL SHUTOFF

Guide

The furnace must be isolated from the gas supply piping
by dosing its individual manual shut-off valve during
any pressure testing of the gas supply piping system at
test pressures equal to or less than 1/2 psig (3.5 kPa).
NOTE:
Maximum pressure to the gas valve for natural gas is
13.8" W.C. Minimum pressure is 5.0" W.C. Maximum
pressure to the gas valve for propane is 13.8" W.C.
Minimum pressure is 11.0" W.C.
All gas fittings must be checked for leaks using a
soapy solution before lighting the furnace. DO NOT
CHECK WITH AN OPEN FLAME!

Use a backup wrench on the gas valve when installing
gas piping to prevent damage to the gas valve and
manifold assembly.

AUTOMATIC GAS VALVE
WITH MANUAL SHUTOFF

MAIN MANUAL
SHUTOFF VALVE

GROUND
,/
)i/

UNION
JOINT
DRIP

j..._..1t

LEG

UPFLOW-

RIGHT HAND GAS PIPING

THE DOWNFLOW (VERTICAL) MAY BE INSTALLED LEFT OR RIGHT SIDE GAS PIPING
18-CD19D5-21

Installer's

Guide
MAIN MANUAL
SHUTOFFVALVE

AUTOMATIC GAS VALVE
WITH MANUAL SHUTOFF

GROUND

UNION JOINT

AUTOMATIC GAS VALVE
WITH MANUAL SHUTOFF

HORIZONTAL FURNACE GAS PIPING MAY BE FROM EITHER SIDE (UPFLOW SHOWN)
TABLE 10
.

NATURAL GAS ONLY
TABLE OF CUBIC FEET PER HOUR OF GAS
FOR VARIOUS PIPE SIZES AND LENGTHS
PIPE

LENGTH OF PIPE

SIZE

1/2

132

3/4

278

190

152

130

115

105

520

350

285

245

215

195

180

1050

730

590

520

440

400

370

1
1-1/4

This table is based on pressure drop of 0.3 inch W.C. and 0.6 SRGR. gas

TABLE 11
ORIFICE SIZES
MAIN BURNERORIFICE
DRILL SIZE

INPUT
RATING
BTUH

NUMBER
OF
BURNERS

NAT. GAS

LP GAS

40,000
60,000
80,000
100,000
120,000

2
3
4
5
6

45
45
45
45
45

56
56
56
56
56

COMBUSTION AND INPUT CHECK
1. Make sure all gas appliances are off except the furnace.
2. Clock the gas meter with the furnace operating (determine the dial rating of the meter) for one revolution.
3. Match the "See" column in the gas flow (in efh)
Table 13 with the time clocked.
4. Read the "Flow" column opposite the number of seconds clocked.
5. Use the following factors if necessary:
For 1 Cu. Ft. Dial Gas Flow CFH =
Chart Flow Reading +2
For 1/2 Cu Ft. Dial Gas Flow CFH =
Chart Flow Reading +4
For 5 Cu. Ft. Dial Gas Flow CFH =
10X Chart Flow Reading
32

Multiply the final figure by the heating value of the
gas obtained from the utility company and compare
to the nameplate
rating. This must not exceed the
nameplate rating.
Changes can be made by adjusting
the manifold
pressure
or changing orifices (orifice change may
not always be required).
To adjust the manifold
pressure:
a. Turn off all electrical power to the system.
b. Attach a manifold pressure gauge to the outlet
pressure
tap marked
"OUT PRESS TAP" on
White-Rodgers
gas valve model 36F or boss
marked "OUT P" on White-Rodgers
gas valve
model 36G. (See Figure 51 for White-Rodgers
gas
valve model 36F and Figure
52 for WhiteRodgers gas valve model 36G.). For the gas valve
model 36F, measurement
requires
removal
of
the plug and installation
of a barbed fitting. Attach flexible tubing and a manometer
to the
barbed fitting. For the gas valve model 36G, do
not remove the pressure tap test screw. Using a
3/32" hex wrench, loosen the pressure
tap test
screw one turn and install 5/16" flexible tubing
and a manometer
directly onto the outlet pressure boss.
c. Turn on system power and energize valve.
d. Remove the regulator
adjustment
screw cap
on the gas valve for manifold pressure adjustment.
e. Turn the adjustment
nut clockwise to increase
the gas flow rate, and counter-clockwise
to decrease the gas flow rate using a 3/32" hex wench.
f. The final manifold pressure
setting shall be as
specified in Table 12 with an input of no more
than nameplate
rating and no less than 93% of
the nameplate rating, unless the unit is derated
for high altitude.

+4
18-CD19D5-21

Installer's
TABLE 12

g. Replace the regulator adjustment
screw cap and
tighten securely.
h. Turn off all electrical power to the system.
i. Remove the manometer
and flexible tubing. Remove the barbed fitting and replace the plug or
tighten the pressure test screw.
j. Turn on electrical power to the system and energize valve.
k. Using a leak detection solution or soap suds,
check for leaks at plug or pressure boss screw.

Guide

FINAL

MANIFOLD

PRESSURE

SETTINGS

FUEL

PRESSURE

NATURAL GAS

3.5" W.C.

LP GAS

11.0" W.C.

CORRECT METHOD OF CHECKING DIRECT VENT MANIFOLD
PRESSURE WITH BURNER BOX REFERENCED
Separate

the tube

at the unit Tee and

reconnect with a
short piece of field
supplied tube and
another Tee with

_
'

II '_
H
q

_
,//

the "U" Manometer

attached.
Be sure to reconnect

/'_:._
._,
II
J:_L_._ _))

unit tubing
the rn anifold

to original

\\ _

pressu re!

Field supplied barb fitting
with manometer
tube is
attached to the "OUTLET
PRESSURE TAP" on the

II
_

|
J

outlet side of the gas valve.

HIGH ALTITUDE DERATE
Replace and/or tighten all plugs removed or loosened
when adjusting gas pressure. Leak check the fittings
before placing the furnace into regular service. Failure
to follow this warning could result in fire, explosion, or
property damage.
NOTE:
The manifold
pressure
must be referenced
to the
burner box. The burner box pressure
tap equalizes the
gas valve pressure
regulator.
Manifold
pressure
is
checked by installing a tee (field supplied) in the tubing, between the tee coming from the burner box tube
and the gas valve, in addition to the regular gas valve
pressure tap on the outlet side of the gas valve. See Figure 49.

Replace manifold pressure tap threaded plug and leak
check after checking/adjusting manifold gas pressure.
Table 11 lists the main burner orifices used with the furnace. If a change of orifices is required to correct the
furnace input rating refer to Table 14.
IMPORTANT:
Re-install the propane orifices to the same depth as the
orifices supplied with the equipment.

18-CD19D5-21

Input ratings (BTUH) of these furnaces are based on
sea level operation and should not be changed at elevations up to 2,000 ft.
If the installation is 2,000 ft. or above, the furnace input
rate (BTUH) shall be reduced 4% for each 1,000 ft.
above sea level. The furnace input rate shall be checked
by clocking the gas flow rate (CFH) and multiplying by
the heating value obtained from the local utility supplier for the gas being delivered at the installed altitude.
Input rate changes can be made by adjusting the manifold pressure (rain 3.0 - max 3.7 in. W.C. - Natural Gas)
or changing orifices (orifice change may not always be
required). If the desired input rate can not be achieved
with a change in manifold pressure,
then the orifices
must be changed. LP installations
will require an orifice
change.
Installation
of this furnace at altitudes above 2,000 ft.
(610m) shall be in accordance with local codes, or in the
absence of local codes, the National Fuel Gas Code,
ANSI
Z223.1/
NFPA 54 or National
Standard
of
Canada, Natural Gas and Propane Installation
Code,
CSA B149.1. Installation
of this furnace at altitudes
above 2,000 ft (610m) shall be made in accordance with
the listed high Altitude Conversion Kit available with
this furnace.

Installer's

Guide
TABLE 13

GAS FLOW IN CUBIC FEET PER HOUR
2 CUBIC FOOT DIAL
SEC.

FLOW

SEC.

FLOW

SEC.

FLOW

SEC.

FLOW

900

248

144

800

240

141

720

232

138

655

225

136

600

218

133

555

212

131

514

206

129

480

200

126

450

195

124

424

189

122

100

400

185

120

104

379

180

116

108

360

176

112

343

172

109

116

327

167

106

120

313

164

103

124

300

160

100

128

288

157

132

277

153

136

267

150

140

257

147

144

iiiiiiiiiiii

COVER

Installations
above 4,000 feet may require a pressure
switch change. If required, use the BAYHALT*** Kit
(High Altitude Accessory Kit) listed in PRODUCT DATA.
TABLE 14
PART NUMBERS FOR REPLACEMENT ORIFICES

INSIDE

PART
NUMBER

DRILL
SIZE

PART
NUMBER

44
45
46
47
48
49
50

ORF00501
ORF00644
ORF00909
ORF00910
ORF01099
ORF00503
ORF00493

54
55
56
57
58
59

ORF00555
ORF00693
ORF00907
ORF00908
ORF01338
ORF01339

REINSTALLATION OF THE BURNER BOX COVER
Figure 50 shows the correct way to reinstall the burner
box cover if adjustment
or replacement
of the flame
sensor, hot surface igniter, or main burner orifices have
required removal of the cover.
TABLE 15
Orifice
ALTITUDE ABOVE SEA LEVEL
Twist Drill
Size If
and Orifice Required At Other Elevations
Installed
At Sea
Level
2000 3000 4000 5000 6000 7000 8000 9000 10000

AS SHOWN

INSERT THE TOP
FLANGE OF THE FRONT
OTATE THE FRONT
COVER UNDER THE LIP

DRILL
SIZE

THE BOX

42
43
44
45
46
47

42
44
45
46
47
48

43
44
45
47
47
48

43
44
45
47
47
49

43
45
46
47
48
49

44
45
47
48
48
49

44
46
47
48
49
50

45
47
48
49
49
50

46
47
48
49
50
51

47
48
50
50
51
52

54
55
56
57
58

54
55
56
58
59

55
55
56
59
60

55
55
57
59
60

55
56
57
60
61

55
56
57
60
62

55
56
58
61
62

56
56
59
62
63

56
56
59
63
63

56
57
60
63
64

From National
_1._

MUST BE OUTSIDE
THE BOX

Fuel Gas Code-Table

F-4

---- ,LLS,OEFL,°OES
/_
O

ROTATE THE FRONT
COVER INWARD
MAKING SURE THAT
ALL SIDE FLANGES

CARBON MONOXIDE POISONING HAZARD
Failure to follow the installation instructions for the
venting system being placed into operation could
result in carbon monoxide poisoning or death.

ARE OUTSIDE
BOX.

START UP AND ADJUSTMENT

OF THE

IMPORTANT:
Re-install the propane orifices to the same depth as the
orifices suppfied with the equipment.

See Table 15 for help in selecting orifices if orifice
change is required. Furnace input rate and temperature rise should be checked again after changing oririces to confirm the proper rate for the altitude.

PRELIMINARY INSPECTIONS
With gas and electrical
power "OFF"
I. Duct connections are properly sealed
2. Filters are in place
3. Venting is properly assembled
4. Blower door is in place
Flip the switch on main gas valve within the unit to the
"OFF"

position.

Purge
all

gas

DO
Allow

unit

Turn
from

CHECK

5 minutes

dissipate.
the

air

connections

NOT

forced

the

ventilation.
to the

the

external

the

gas

for

leaks

WITH
for any

lines.

AN
gas

with

OPEN
that

being heavier
Flip the switch
"ON" position.

Gas

gas
After

valve

"ON".

purging, Check
soapy
solution -FLAME.

might have escaped to
than
air may
require
on

the

gas

valve

18-CD19D5-21

Installer's

Guide

LIGHTING INSTRUCTIONS

DO NOT attempt to manually light the burner.
Failure to follow this warning could result in property
damage, personal injury or death.
Lighting instructions
appear on each unit. Each installation must be checked out at the time of initial start up
to insure proper operation of all components. Check out
should include putting the unit through one complete
cycle as outlined below.
Turn on the main electrical supply and set the thermostat above the indicated temperature.
The ignitor will
automatically
heat, then the gas valve is energized to
permit the flow of gas to the burners. After ignition and
flame is established, the flame control module monitors
the flame and supplies power to the gas valve until the
thermostat
is satisfied.
To shut off.
For complete shut-down: Flip the switch on the main
gas valve to the "OFF" position, (See Figure 51 & 52).
Disconnect the electrical supply to the unit.

Outlet Pressure Boss

Regulator
Adjustment

If this is done during the cold weather months, provisions must be taken to prevent freeze-up of all water
pipes and water receptacles. Failure to follow this
warning could result in property damage.
Whenever
your house is to be vacant, arrange to
have someone
inspect
your house for proper temperature.
This is very important
during freezing
weather.
If for any reason
your furnace
should
fail to operate
damage could result, such as frozen water pipes.
SEQUENCE OF OPERATION
Thermostat call for heat
R and W thermostat
contacts
module to run its self-check

close signaling the control
routine. After the control

module has verified that the pressure switch contacts
are open and the limit switch(es) contacts are closed,
the draft blower will be energized.
As the induced draft blower comes up to speed, the
pressure switch contacts will close and the ignitor warm
up period will begin. The ignitor will heat for approximately 20 seconds, then the gas valve is energized to
permit gas flow to the burners. The flame sensor confirms that ignition has been achieved.
After the flame sensor confirms within a 4 second trial
period that ignition has been achieved, the delay to fan
ON period begins timing. After approximately
45 sec-

Inlet Pressure
Boss (opt.)

On/Off Switch

White-Rodgers 36G gas valve

On/Off Switch

onds the indoor blower motor will be energized and continue to run during the heating cycle.
When the thermostat
is satisfied, R and W thermostat
contacts open, the gas valve will close, the flames will
extinguish, and the induced draft blower will be de-energized. The indoor blower motor will continue to run
for the fan off period (Field selectable at 60, 100, 140 or
180 seconds), then be de-energized
by the control module.
CONTROL AND SAFETY SWITCH ADJUSTMENTS
LIMIT SWITCH CHECK OUT
The limit switch is a safety device designed to close the
gas valve should the furnace become overheated. Since
proper operation
of this switch is important
to the
safety of the unit, it must be checked
out on initial
start up by the installer.

White-Rodgers 36F gas valve

18-CD19D5-21

Installer's

Guide

To check for proper operation of the limit switches, set
the thermostat
to a temperature
higher than the indicated temperature
to bring on the gas valve. Restrict
the airflow by blocking the return air (disconnecting the
indoor blower may trip the inducer limit). When the
furnace reaches the maximum outlet temperature
as
shown on the rating plate, the burners must shut off. If
they do not shut off after a reasonable
time and overheating is evident, a faulty limit switch is probable and
the limit switch must be replaced. After checking the
operation of the limit control, be sure to remove the paper or cardboard from the return air inlet. Refer to Setvice Facts for additional instructions.
NOTE TO INSTALLER
Review the following warnings with the owner. Review
contents of USER'S INFORMATION MANUAL with the
owner.
AIRFLOW ADJUSTMENT
Check inlet and outlet air temperatures
to make sure
they are within the ranges specified on the furnace rating nameplate.
If the airflow needs to be increased or
decreased, see the wiring diagram for information
on
changing the speed of the blower motor.

Disconnect power to the unit before removing the
blower door.
Failure to follow this warning could result in property
damage, personal injury or death.
This unit is equipped with a blower door switch which
cuts power to the blower and gas valve causing shutdown when the door is removed. Operation with the
iHiiiIiiiiiii/i!iiliiiiHlii!liii
door removed or ajar can permit the escape of danger-

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ous fumes. All panels must be securely
................................................................................
times for safe operation of the furnace.
INDOOR BLOWER TIMING

closed

at all

Heating:
The integrated
furnace control module controls the indoor blower. The blower start is fixed at 45
seconds after ignition. The FAN-OFF period is field selectable by dip switches at 60, 100, 140, or 180 seconds.
The factory setting is 100 seconds (See wiring diagram).
Cooling: The fan delay off period is factory set at 0 seconds. The option for 80 second delay off is field selectable (See wiring diagram).
ROOM AIR THERMOSTAT
HEAT ANTICIPATOR ADJUSTMENT
Set the thermostat
heat anticipator
according to the
current
flow measured,
or the settings found in the
notes on the furnace wiring diagram (found in the SERVICE FACTS or inside the furnace casing).

INSTRUCTIONS TO THE OWNERS
In the event that electrical,
fuel, or mechanical
failures
occur,
the owner
should
immediately
turn the gas supply
off at the manual
gas valve,
located
in the burner
compartment.
Also turn off
electrical
power
to the furnace
and contact
the
service agency designated
by your dealer.
BURNER BOX TEMPERATURE LIMIT DEVICE
All models are equipped with a manual reset temperature limit located on the burner box. In case of excessive temperature,
the limit will open and cause the circuit to open which shuts off all flow of gas.
ABNORMAL CONDITIONS
1. EXCESSIVE COMBUSTION PRESSURE (WIND IN
EXCESS OF 40 MiP.H.) VENT OR FLUE BLOCKAGE
If pressure against induced draft blower outlet becomes excessive, the pressure switch will open and
shut off the gas valve until acceptable combustion
pressure is again available.
2. LOSS OF FLAME
If loss of flame occurs during a heating cycle, or
flame is not present at the sensor, the flame control
module will close the gas valve. The flame control
module will then recycle the ignition
sequence,
then if ignition is not achieved, it will shut off the
gas valve and lock out the system.
3. POWER FAILURE
If there is a power failure during a heating cycle,
the system will restart the ignition sequence automatically when power is restored if the thermostat
still calls for heat.
4. GAS SUPPLY FAILURE
If loss of flame occurs during a heating cycle, the
system integrated
control module will recycle the
ignition sequence, then if ignition is not achieved,
the integrated control module will shut off the gas
valve and lock out the system.
5. INDUCED DRAFT BLOWER FAILURE
If pressure is not sensed by the pressure switch, the
contacts will remain open and not allow the gas
valve to open, therefore the unit will not start. If
failure occurs during a running cycle, the pressure
switch contacts will open and the gas valve will
close to shut the unit down.
6. CONDENSATE DRAIN BLOCKAGE
If the condensate drain is blocked, either by debris,
improper draining, or by freezing condensate,
the
pressure switch will sense the accumulation
of condensate
in the furnace drain pan. The pressure
switch contacts will open and remain open, not allowing unit operation. The unit will not operate until the condensate
drain has been cleared, and the
condensate flows freely.

18-CD19D5-21

Installer's
7. RESETAFTER

LOCKOUT

When the integrated
control module has shut the
system down and gone into lockout, the system
must be manually reset before the unit will restart.
To reset, turn the system power off, then on, then
off and then on again within 30 seconds. This may
be done at the unit's power source or at the thermostat. The system will not reset unless the procedure off-on-off-on is completed within 30 seconds.
8. RESET AFTER BURNER
BOX LIMIT SHUTDOWN
If the furnace shuts down, one thing that can be
checked is the burner box temperature
limit switch.
It is located on the bottom of the burner box. The
vent and combustion air inlet terminations
should
be checked for blockage. If blockage exists, clear
the problem and then the reset button may be depressed. If there is no blockage
of the terminations, the limit
switch
must be reset
by a
qualified servicer.
Carbon monoxide,
fire or smoke can cause serious
bodily injury, death, and/or property damage.
A variety of potential sources of carbon monoxide can be
found in a building or dwelling such as gas-fired clothes
dryers, gas cooking stoves, water heaters, furnaces and
fireplaces. The U.S. Consumer Product Safety Commission recommends
that users of gas-burning
appliances
install carbon monoxide detectors as well as fire and
smoke detectors per the manufacturers
installation
instructions to help alert dwelling occupants of the presence of fire, smoke or unsafe levels of carbon monoxide.
These devises should be listed by Underwriters
Laboratories, Inc. Standards
for Single and Multiple Station
Carbon Monoxide Alarms,
UL 2034 or CSA International Standard, Residential Carbon Monoxide Alarming
Devices, CSA 6.19

The following

warning

complies

with State of California

AWARNING:

Guide
law, Proposition

This product

65.

contains

fiberglass wool insulation! Fiberglass dust and ceramic fibers are believed by the State of California to cause
cancer through inhalation. Glasswool fibers may also
cause respiratory, skin, or eye irritation.
PRECAUTIONARY

MEASURES

• Avoid breathing fiberglass dust.
• Use a NIOSH approved dust/mist respirator.
• Avoid contact with the skin or eyes. Wear longsleeved, loose-fitting clothing, gloves, and eye
protection.
• Wash clothes separately from other clothing: rinse
washer thoroughly.
• Operations such as sawing, blowing, tear-out, and
spraying may generate fiber concentrations requiring
additional respiratory protection. Use the appropriate
NIOSH approved respirator in these situations.
FIRST AID MEASURES
Eye Contact

Flush eyes with water to remove
dust. If symptoms persist, seek medical attention.

Skin Contact

Wash affected areas gently with
soap and warm water after handling.

NOTE:
The manufacturer of your furnace does not test any detectors and makes no representations regarding any
brand or type of detector.

18-CD19D5-21

Installer's

Flashing
Flashing
Continuous

INTEGRATED FURNACE CONTROL ERROR FLASH CODES
Normal - No call for Heat
Slow --Normal - Call for Heat
Fast--ON ---

Continuous

OFF ---

2 Flashes---

3 Flashes

---

4 Flashes--5 Flashes--6 Flashes

---

7 Flashes

---

8 Flashes

---

9 Flashes

---

Trane
6200 Troup Highway
Tyler, TX 75707

For more information
contact your local dealer.

Guide

Replace IFC
Check Power
System Lockout (Retries or Recycles exceeded)
Draft Pressure Error- Possible problems:
a) Venting problem
b) Pressure switch problem
c) Inducer problem
Open Temperature Limit Circuit
Flame sensed when no flame should be present
115 volt AC power reversed, poor grounding or system voltage too low
Gas valve circuit error
Low flame sense signal
Check Ignitor Circuit and Line "N" to 24VAC "Common" voltage (_<2 volts)
[possible grounding problem]

Literature Order Number

18-CD19D5-21

File Number

18-CD19D5-21

Supersedes

18-CD19D5-20

The manufacturer
to change

has a poficy of continuous

design and specifications

product

and product data improvement,

it reserves the right

without notice.

18-CD19D5-21

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TRANE Furnace/Heater, Gas Manual L0902560

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