TRANE Furnace/Heater, Gas Manual L0902557

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

Open the PDF directly: View PDF .
Page Count: 38

Download
Open PDF In Browser	View PDF

1 8 - CD2 0 D3 - 21

i _t'_"ii
_ii,!
i;"!i_
i,_ii!:':iii
! _ii,
i_
!:!:_,!il
'¸'''_
_iIi
i_;
Upflow / Horizontal and Downflow / Horizontal,
Gas-Fired, Direct Vent, 2-Stage Condensing
Furnaces with Variable Speed Inducer
*UY060R9V3W
*UY080R9V3W

*UY100R9V4W
*UY120R9V5W

*DY060R9V3W
*DY080R9V3W

*DY100R9V4W
*DY120R9V5W

*__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.

*UY-R9V-V

*DY-R9V-V

DOWNFLOW

(

A_t
FLOW

AIR

FLOW

UPFLOW

AN
FLOW

UPFLOW/HORIZONTAL

DOWNFLOW/HORIZONTAL

F_O_W_

_ \
o

A341624P04

Installer's

Guide
SAFETY

The following safety practices and precautions
must be
followed during the installation,
servicing, and operation
this furnace.

SECTION

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 3), of these
instructions.
3. Provide adequate combustion and ventilation air to the
furnace space as specified in "Air for Combustion and
Ventilation" (page 7), 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 13-24), 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 31), 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 3), 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 manufacturer's
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 are in place.
d. The furnace input rate and temperature
rise must be
verified to be within nameplate
marking.
e. 100% of the furnace combustion air requirement
must
come from outside the structure.
f. 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.

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.

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.
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.

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.

I10. TGhis
slpirltdru_t thUStcboeja:pip:dbhYc_

Lh_aCsenascedPlet_!)erot1

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 WARNING and
CAUTION.
a. WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
b. 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.
© 2008 Trane

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.

18-CD20D3-21

Installer's
GENERAL

INSTALLATION

INSTRUCTIONS

Contents

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 must be reduced (See GAS INPUT
ADJUSTMENT).
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
standards
• CAN/CGA 2.3. 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.
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 chimney or vent and
as centralized for heat distribution
as practical?
2. Do all clearances between the furnace and enclosure
equal or exceed the minimums stated in Clearance Table
on the Outline Drawings.
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 combustion air openings in the front panel and
any closed panel or door provided?
5. Are the ventilation and combustion air openings large
enough and will they remain unobstructed?
If outside air
is used, are the openings set above the highest snow
accumulation
level? (See the Air for Combustion and
Ventilation
section)
6. Allow sufficient height in supply plenum above 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
protected from water.

so electrical

components

are

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 above the floor
and the furnace must be located or protected to avoid
physical damage from vehicles.
18-CD20D3-21

Guide

Installation Instructions
General Installation Instructions
Location and Clearances
Outline Drawing
Upflow Installation
Downflow Installations
Horizontal Installation
Air for Combustion and Ventilation
Duct Connections
Return Air Filters
General Venting Information
Venting Materials
High Altitude Derate
Horizontal Venting
Downward Venting
Venting Through the Roof
Venting Routed Through a Masonry Chimney
Electrical Connections
Field Wiring Diagrams
Condensate Drain Instructions
Gas Piping
Combustion and Input Check

Start-up and Adjustment
Preliminary Inspections
Lighting Instructions
Sequence of Operation
Control and Safety Switch Adjustments
Airflow Adjustment

Abnormal Conditions
IFC Error Flash Codes
Fault Code Recovery

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.

Do not install the furnace in a corrosive or contaminated
atmosphere. Failure to follow this warning could result in
early equipment failure.

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.

.i
|

1tl
I-I,

Iit
I
I

16"
f

_C'}7,8"
KtOCI{,OUT
ELECTFi IC_L
5UPPL','
(_LTEUi,LTE}

_.,I I 2" FI, OCKOUT
(}AS SUP>L '
(ALTERNATE)

40"
a'

SIDE

SIDE
RETURN
AIR

i
14 7/8"

, RETURN
AIR

DIM "A"

MODEL
(SEE NOTE 1 &2)
÷LJYOGORgVS÷÷÷
÷L.YOOORgVS÷÷÷

DIM "B"

AIR
INLET

?4 1'{57"
(3O

&
C1
1",3
o
C1
co

Io
°

DIM "A"

DIM "B"

DIM "C"

DIM "D"

DIM "E"

DIM "F"

2 I/4"

IG I/4"

16"

7 1i2"

I/2"

÷UYIOORgV4÷÷÷

21"

? I/2"

19 3/4"

19 I/2"

÷UYIPOE!gVS÷÷÷

24 I/2"

2 15/16"

23 I/4"

73"

I0"

_57

÷ REFI:
÷_ SUFFIX
SUFFIX

_@_

N# BE "A" O_
LETTER PlAY
lqAf E
LETTER

"T"
IIDII
IlWlI

THRO a
9
THRU

NOTES
I
÷UXI20C960
REQUIRES
3"
DIAMETER
VENT PiPE
{UX100C948
& {UXIOOC960
REQUIRES
2 I/2"
OR 3"
DIAMETER
VENT
PIPE
2
DIAMETER
Of VENT PIPE
MAY BE LIMITED
TO 2 I/2"
OR 3"
ON SOME MODELS
AT DIFFERENT
ALTITUDES
REFER
TO THE
VENT LENGTH TABLE
FOR PROPER
APPLICATIOB

MINIMUM CLEARANCE TO
COMBUSTIBLE MATERIALS
UPFLOW
SIDES
0 IN
NEAR
0 IN
FRONT
5 IN
TOP
I IN
FLuE
0 IN
HORIZONTAL(FLUE
DISCHARGEON THE LEF_
ALCOVE
SIDES
RIGHT
0 IN
LEFT
0 IN
REAR
6 IN
FRONT
18 IN
TOD
I IN
FLOE
O IN
CLOSET
SIDES
RIGHT
LEFT
REAR
FRONT
TOP
FLOE

I
I
3
3
I
0

IN
IN
IN
IN
IN
IN

From Dwg. 21C341884 Rev. 1

(3O
i
©

*DY-R9V-W

I-O
o

DOWNFLOW

/ HORIZONTAL

OUTLINE

DRAWING

(ALL DIMENSIONS ARE IN INCHES)

FLUE

CONNECT

SEE NOTE I

6
5/8"

4 1/2"

INLET

DIM "C"

19 5/8"
_/8

¢3"
AIR

OPENING
INTAKE

7/8" ELECTRICAL
CONNECTION(ALTERNATE)

4 1/16"

HORIZONTALAPPLICATION
(THIS SIDE ONLY)

NOR, ONTAL
CONDE fT
I 7/8"
x 7/8"
SLOT KNOCKOUT

\\\

!_1/2"

7/8"_
ELECTRICAL
SUPPLY

KNOCKOUT

I / 2"
\

\
\

AIR

CONNECTION
INTAKE

I/2"
GAS
CONNECTION

15/16"

25"
20

MINIMUM CLEARANCE TO
COMBUSTIBLE MATERIALS
DOWNFLOW
SLOES
0 IN
REAR
o IN.
FRONT
3 IN.
TOP
I IN
FLUE
0 IN.
HORIZONTALFLUE
BSCHARGE ON 11-1ELB='E_
ALCOVE
SIDES
RIGHT
0 IN,
LEFT
0 IN.
REAR
6 IN
FRONT
18 IN,
TOP
I IN.
FLUE
0 IN
CLOSET
SIDES
RIGHT
LEFT
REAR
FRONT
TOP
FLUE

I
I
3
3
I
0

IN.
IN
IN,
IN.
I N.
IN,

I/4"

DIM "A"
CONDENSATE DRAIN
KNOCKOUT
MODEL
(SEE NOTE 1)
÷DY060RgVS÷÷÷
÷DY080Rgvs÷÷÷
÷DVl00Rgv4÷÷÷

÷DYI2OR9VS÷÷÷

OUTLET

DIM "D"

AIR

**
***
u

I a_ _/I 6" _,"-

DIM "A°

DIM "e"

DIM °C"

2 I/4"

16 I/4"

16"

2 I/2"

19 3/4"

19 I/2"

I/2"
21"

I/2"

PREFIX MAY BE "A" OR "T"
SUFFIX LETTER MAY BE "D"
SUFFIX LETTER MAY BE IlWll

DIM "D"

I
I

2 15/16

O THRN 9
0 THRU 9

I/4"

(I}

23"

NOTES:
I DIAMETER OF VENT PIPE MAY BE LIMITED
TO 2 I/2" OR 3" ON SOME MODELS AT DIFFERENT
ALTITUDES REFER TO THE VENT LENGTH TABLE
FOR PROPER APPLICATION

7 3/4"
From Dwg. 21C341885 Rev. 1

n_
(D

Installer's

Guide

UPFLOW 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 the standoffs then screwed into
the furnace flange. The coil is always placed downstream
of
the furnace airflow.

STANDOFFS

(4)

DRILL

iiiiiiiiiiii

SCREWS

(4)

FOR VERTICAL
INSTALLATIONS:
SCREWS
(BOTH

SIDES)

HORIZONTAL INSTALLATION
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 TXC cased coil in the horizontal
position.
See Figure 4.
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.
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

STANDOFFS
(BOTH SIDES)

DOWNFLOW

CABINET

BRACKET FOR DOWNFLOW
FURNACE
IN HORIZONTAL
CASED COIL CONNECTION

INSTALLATIONS
BIDE

CABINET

SUB-BASE
FLANGE
(BENT

ONLY

FLANGE

UP)

SUB-BASE

DOWNFLOW

SIDE

SUB-BASE

-J-_DUCT

I_--

(BENT

UP)

SUB-BASE

converted to horizontal, aligns and attaches the TXC coil as in
Figure 1. However, the coil requires additional support.

CO_mCSTmI,E
FLOOtl
PLENUM

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 5 &
Clearance Tables, pages 4-5). 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. The furnace
must be
supported
at both ends and the middle when installed
horizontally.
The furnace
must also be elevated
approximately 4-6 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
)anels.

@
TABLE 1
CABINET
RETURN
FLOOR OPENING PLENUM OPENING
WIDTH DUCT WIDTH
"A ....
B....
C....
D"

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"
18-CD20D3-21

Installer's

Unconfined space is defined in Figure 6. 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.

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

w,t..I
oLo,,.s
UNCONFINED

AIR FOR COMBUSTION

AND VENTILATION

If these furnaces are installed in a nondirect vent capacity
then the adequate flow of combustion and ventilating
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 5.3, Air for
Combustion and Ventilation,
of the National Fuel Gas Code,
ANSI Z223.1 -- CAN/CGA B149.1 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
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
supply will also require OUTDOOR AIR for combustion:
* Permanent
wave solutions
* Chlorinated
waxes and cleaners
* Chlorine based swimming pool chemicals
* Water softening chemicals
* Deicing salts or chemicals
* Carbon Tetrachloride
* 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
"unconfined
space".

space"

or an

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.

AREA SPACE
IN SQUARE
FEET
OR MINIMUM
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

I--I-

CONFINED
SPACE

LESS THAN 50 CU. FT.
PER 1000 BTU/HR. INPUT
ALL EQUIP. INSTALLED
1.

All air from inside the building as in Figure 9: 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 malting this
determination.
Refer to Table 2 for minimum open areas
requirements.

All air from outdoors as in Figure 10: 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.

air

TABLE 2
MINIMUM FREE AREA IN SQUARE INCHES
EACH OPENING FURNACE ONLY)
Furnace
Maximum
BTUH/INPUT
Rating
60,000
80,000
100,000
120,000

18-CD20D3-21

Guide

Air
From
Inside
1oo
1oo
1oo
120

Air From Outside
Vertical
Duct
15
20
25
30

Horizontal
Duct
30
40
50
60

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.

®
CONFINED
AIR FROM

SPACE
INSIDE BUILDING

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.

CONFINED
SPACE

PERMANENT
OPENINGS

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.

iiiiiiiiiiii

®
CONFINED SPACE
AIR FROM OUTDOORS

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).

L
CONFINEDSPACE

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.
CONFINED SPACE

AIR FROM VENTILATED ATTIC/CRAWL SPACE
_

ATTIC

LOUVERS

DOORS

Do Not install return air through the back of the furnace
cabinet.

,UTLET
CONFINED

AIR

Do Not install return air through the side of the [hrnace cabinet
on horizontal applications.

SPACE

ALTERNATE
INLET A_R _

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.

NOTE:
Minimum return air temperature is 55 ° F.

INLET
AIR DUCT

All return air duct systems
return air filters.
1. Set the furnace
CONFINED

ATTIC
:LOUVERS
TO OUTDOORS

in place.

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 11 and the outline drawing on
page 4 for duct connection dimensions for various
furnaces.
4. Ifa 3/4" flange is to be used for attaching the air inlet
duct, add to cut where indicated by dotted lines in
Figure 11. Cut corners diagonally and bend outward to
form flange.

CONFINEDSPACE

INLET
AIR DUCT

5. If flanges are not required, and a filter frame is installed,
cut between locating notches (See Figure 11).
6. The bottom panel of the upflow furnace
for bottom return air.

for installation

2. For upflow side return installations,
remove the insulation
around the opening in the blower compartment.

SPACE

AIR FROM VENTILATED

should provide

must be removed
18-CD20D3-21

Installer's
Remove the filter and 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 and filter for
upflow bottom return installations.
7. The filter retainer is factory supplied for upflow bottom
return. 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. Do NOT use the
bottom return filter within the furnace.
Filter kits
are available
for horizontal
applications.

Guide

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 12). The 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.
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 13).
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.

9. Connect duct work to furnace. See Outline Drawing for
supply and return duct size and location. Flexible duct
connectors are recommended
to connect both supply and
return air ducts 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

TYPICAL UPFLOW RETURN AIR FILTER INSTALLATIONS
Filters are factory supplied for these furnaces. 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. Some filters may need to be trimmed for side
or bottom filter use.
TABLE
MODELS
NUMBERS

CABINET
WIDTH

*UYO6OR9V3
*UYO8OR9V3

17-1/2"

*UYIOOR9V4

21"

*UY120R9V5

24-1/2"

3
FILTER
QTY & SIZE
1 - 17"X

25"X

1 - 20" X 25" X 1"
1 -24"X

25"X

* First letter may be "A" or "T"
** NOTE - On 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.

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 I side and the
bottom; OR just the bottom.

I
-.

FILTER
RACK -'_

4__SPRINGS
RAILS

ADJUSTMEN

UPFLOW FURNACE ONLY

LOCATING
*'_
NOTCHES PRO-"T.,.
VIDED
FOR
SIDETI
RETURN
CUTOUT

Blower Door Hinge and Bottom Filter Rack Installation

CUT OUT FOR
SIDE FILTER

TAINING
-_//

(Both
PI;ides)

Filter Rack Assembly

ONT
of Furnace

*SEE OUTLINE DRAWING
18-CD20D3-21

Installer's

Guide
the blower deck and the lower pin/screw rests against
the side of the bottom panel. See Figures 15-19.

®
-.

f. Reinstall the furnace
chamfer end first.

""'"';

®
Engagement

Filter

tlV

Furnace
Cabinet
Side

Rack

Retaining
Screw/Pin

%.,,

Filter
Rack

)

Engagement Hole
For Filter Rack
Installation With _)_

Bottom Return

ENGAGEMENT
HOLE DETAIL
(Typical both sides
and blower deck)

the

BOTTOM ENGAGEMENT

iiiII

iiiiiiiiiiii

filter on the side inserting

Bottom Panel

®
Engagement Hole
For Filter Rack
Installation With
Side Return

BLOWER
DECK

FILTER RACK INSTALLATION FOR SIDE RETURN AIR
ON UPFLOW FURNACES (Left or Right)
NOTE:
The filter rack installation is not allowed for right side return
on the following models: *UYO6ORDV3 & *UYO8ORDV3.

_./
Furnace
Cabi net
Side

If side air return is desired, it is necessary to move the filter
rack from the bottom of the furnace and reinstall it on the
side. The following instructions
should be used:
a. Open or remove the blower door.
b. Remove the filter.

c. Compress the filter rack to disengage the retaining
pins/screws from the furnace sides and slide the filter
rack out.
d. Leave the bottom

Furnace
Blower
Deck

Filter

Retaining
Screw/Pin

Rack
Assembly

panel in place.

e. After the side cutout is made following the directions
in the "Return Air Duct Connections" section on
pages 8 and 9, compress the filter rack and reinstall in
the side of the furnace. Confirm that the upper
retaining pin/screw locks into the engagement
hole in

SIDE
CUTOUT

RETAINING

Filter
Furnace
Cabinet
Side

Rack

Filter Rack
7_

_1_......_

Screw/Pi
Retainingn

BOTTOM
PANEL
INSTALLED

Engagement Hole
For Filter Rack
Installation With
Bottom Return

Typical Upflow Left Side Return Filter Rack Installation
10

18-CD20D3-21

Installer's
BLOWER

DOOR/HINGE

Guide

REMOVAL

Ifclearance or other problems create a problem in using the
tiltingdoor, the blower door hinge may be removed without
creating any problems with the sealof the furnace. To remove
the blower door, tiltthe door forward 2 to 3 inches and pull up.
To remove the tiltfeature,simply remove the lower hinge as
shown in Figure 20. The bottom of the blower door willcatch
in the bottom ofthe furnace front channel fordoor replacement.

Typical Upflow Right Side Return Filter Rack Installation

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-_'ill clearance holes with a
3/16" drill. Bottom return holes are pre-drilled.
CHAMFER
END OF
FILTER GOES
INTO
RACK

FILTER

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.

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.

ALTERNATE FILTER
CLIPS LOCATION

TYPICAL RETURN AIR FILTER INSTALLATION
IN
UPFLOW MODEL IN HORIZONTAL POSITION
18-CD20D3-21

Installer's

Guide

INSTALLING THE FILTER
The filter may need to be cut to fit the unit depending
location of the return air filter.

TABLE 4
on the

A score line and the words "CUT HERE" are located on the
end of the filter. If your application requires cutting the filter,
do so as indicted by the score mark.

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

CABINET
WIDTH

FILTER
QTY & SIZE

17-1/2"

2 - 14" X 20" X 1"

*DY100R9V4

21"

2 - 16" X 20" X 1"

*DY120R9V5

24-1/2"

2 - 16" X 20" X 1"

*First letter may be "A" or "T"
TABLE 5
LOCATING FILTER RETAINER BRACKETS IN DUCTWORK

CUT ON LINE

TYPICAL DOWNFLOW FURNACE
RETURN AIR FILTER INSTALLATIONS
Two filters are factory supplied for each downflow furnace.
These furnaces require high velocity type air filters. 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.

MODELS
NUMBERS
*DY060R9V3
*DY080R9V3

CABINET
WIDTH

RETURN
DUCT
WIDTH

DIMENSION
B"

FILTER
BRACKET
LOCATION*

17-1/2"

16-1/4"

21"

19-3/4"

15"

14"

14-3/8"

19-1/2"

14"

13-1/8"

24-1/2"

23-1/4"

22"

14"

13-5/8"

DIMENSION
"A ....

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

Optional
BAYFL TR206
Door Kit

Optional
BAYFL TR206

THE FURNACE

TO THE

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

VERTICAL
CLOSET

REQUIRED AT TOP OF PLENUM IS 1"

18-CD20D3-21

Installer's
GENERAL
THIS FURNACE

MUST BE VENTED

VENTING

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.

Guide

INFORMATION
If improper venting is observed during any of the above tests,
the remaining common venting system must be corrected.
Correction could require rerouting or resizing the remaining
vent system.
HORIZONTAL INSTALLATION
(UPFLOW / HORIZONTAL OR DOWNFLOW / HORIZONTAL)
NOTE:
In horizontal venting 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
*UXIO0 & *UYIO0, *UX808C960, and all *DX & *DY models.

The recommended
system is assembled
from 2", 2-1/2", or
3" plastic pipe and fittings (See Table 7, page 15). 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 ANSI Z21.47 "latest edition"
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
systems, which must be gas tight and water tight.

WHEN THE FACTORY SUPPLIED "OFF-SET" (2X3
REDUCING COUPLING) IS USED FOR 3" VENT PIPE
INSTALLATION, MAKE SURETHE MARKING "TOP" IS
LOCATED ON THETOP SIDE OFTHE PIPE.

LABEL
SAYS
"TOP"

STRAIGHT SIDE MUST BE
ON BOTTOM FOR PROPER
CONDENSATE
DRAINAGE.

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.

2" ,_'

The following steps shall be followed with each appliance
remaining connected to the common venting system placed in
operation, while the other appliances remaining connected to
the common venting system are not in operation.

COUPLING

FACTORY
SUPPLIED MODELS:
ONLY
T_E
FOLLOWING
UC120

WITF

& DC120

120 & UY120

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.
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.

UXl00
& UY100
UX080C960

MODLES

VENT
VENTET

I The following

warning

complies

with State of California

law, Proposition

65.

Hazardous Gases!
Exposure to fuel substances or by-products of incomplete
fuel combustion is believed by the state of California to
cause cancer, birth defects, or other reproductive harm.
Carbon monoxide, fire or smoke can cause serious bodily
injury, death, and!or property damage.

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 gasburning appliance to their previous conditions of use.
18-CD20D3-21

Installer's

Guide

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 manufacturer's
installation
instructions
to help alert dwelling occupants of the presence of fire, smoke or unsafe levels of carbon monoxide.
These devices should be listed by Underwriters
Laboratories,
Inc. Standards fbr Single and Multiple Station Carbon Monoxide
Alarms, UL 2034 or CSA International
Standard,
Residential
Carbon Monoxide Alarming
Devices, CSA 6.19
NOTE: The manufacturer of your furnace does not test any detectors and makes no representations regarding any brand
or type of detector.
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 fumaces must be
vented to the exterior of the house and combustion air MUST
come through the inlet air pipe FROM OUTSIDE AIR. The
pipes DO NOT have to exit the exterior of the house together or
on the same side of the house.
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)
FURNACE VENT/INLET PIPE INSTALLATION
There are many different variations of the vent/inlet air pipe
combination.
The vent/inlet air combination
used for installation of these furnaces depends on the needs of the location.
However, these guidelines must be followed:
1. The furnace

must vent outside the structure.

2. Furnace combustion air requirements
must be met for
nondirect, single pipe applications
(See example 2
below).
3. For direct vent application of these furnaces, the vent
pipe and air inlet pipe do not have to exit in the same air
space or even on the same surface of the structure.
However, the longest individual pipe will decide the value
fbr the longest allowable equivalent vent/inlet air length as
shown in the vent length table.
NOTE:
BAYVENT2OOB accessories can be used for inlet and outlet
terminals when the pipes do not exit the structure together.
The following are EXAMPLES

ONLY:

EX. 1Example 1 shows that the vent may go vertical while the inlet
air may be on any side of the structure.
The vent pipe would
decide the maximum equivalent length for the pipe depending
on the furnace and pipe size.

EX. 2-Example 2 shows the vent pipe exhausting
through the roof
and the inlet air coming from the interior of the house (See
Note). The inlet air coming from the interior of the house
must meet combustion requirements
for area, etc., as shown
in the section AIR FOR COMBUSTION
AND VENTILATION in this Installer's
Guide.
Vent

Inlet",,4

(see
Not_ [_[L] Furnace
EX. 3 -Example 3 shows the vent exiting one side of the house while
the inlet air is on the opposite side of the structure.
Here the
vent pipe length must be within the allowable length for the
size of furnace and size of the vent pipe. This example
demonstrates
that the pipes do not have to exit on the same
side of the structure.

Vent

Air
Inlet

_L I Furnace

EX. 4-The inlet air does not have to come from outside the structure.
Example 4 shows the inlet air (See Note), may come from the
attic if the requirements
for combustion air are met as shown
in the section AIR FOR COMBUSTION
AND VENTILATION.
Attic
_

Vent

Air jr
Inlet

Vent

(See

Note)

Furnace[_

Air
Inlet
Furnace

NOTE:
If only the flue gas pipe is to the outside of the structure, a
straight section of pipe (long enough to exit the furnace
cabinet) must be attached to the inlet air side with an elbow
(which is 5 to 10 equiv, ft.) installed on the end to prevent
dust and debris from falling directly into the furnace.
18-CD20D3-21

Installer's

Guide

TABLE 7

PVC VENT FITTING MATERIAL These fittings are available from your Gas Furnace Distributors.

1-5/8"

2-3_16"
J_____

I'_---WALL MOUNT

5-5/8"

WALL MOUNT FLANGE
BAY69X 147

FLANGE

BAY69X 148
PLASTIC

PIPE DESIGNATIONS
PVC

ASTM STANDARD

PIPE TYPE

F891

CELLULAR

D2665

DWV

D1785

ALLOWABLE TEMPERATURE

CORE

"158

PIPE

SCH 40, 80, 120

D2241

SDR

SERIES

MARKING
ASTM

F891

*'158

ASTM

D2665

*'158

ASTM

D1785

*'158

ASTM

D2241

CPVC
ASTM STANDARD

PIPE TYPE

D2846

CPVC

F441

SCH

F442

SDR

ALLOWABLE TEMPERATURE

*'212

MARKING
ASTM

D2846

40, 80

*'212

ASTM

F441

SERIES

*'212

ASTM

F442

ABS
ASTM STANDARD

PIPE TYPE

D2661

ALLOWABLE TEMPERATURE

SCH 40 DWV

F628

SCH 40 DWV CELLULAR

**'180
CORE

**'180

MARKING
ASTM

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

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.

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.

Listed in Table 7 are 2", 2-1/2", and 3" size fittings that meet
these requirements.
The materials listed are various grades
of PVC and ABS plastic.
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 for PVC must be
used to join PVC pipe fittings. Follow instructions
on container carefully.
Pipe and Fittings -ASTM D1785, D2466, D2661, & D2665
PVC Primer and Solvent Cement -ASTM D2564.
Procedure

for Cementing

18-CD20D3-21

Joints

Ref-ASTM

D2855

DO NOT ALLOW PRIMER
ING CEMENT.
3.

TO DRY BEFORE

APPLY-

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.
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.
NOTE:
Follow venting instructions carefully when using PVC cement.
IMPORTANT'.
All joints must be water tight. Flue condensate is somewhat
acidic, and leaks can cause equipment damage.

Installer's
Connection
should just
air joint be
be separated
pipes must
length.

Guide

of the pipe and collar of the combustion air inlet
be a friction fit. It is recommended
that the inlet
sealed with RTV type sealant to allow the joint to
for possible future service. The inlet and vent
be properly supported throughout
the entire

VENT AND INLET AIR CONNECTIONS
Seal VENT PIPE
with RTV sealant

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.
Front

CARBON MONOXIDE POISONING HAZARD

Seal INLET AIR PIPE
with RTV sealant

Failure to follow the installation instructions for the venting
system being placed into operation could result in carbon
monoxide poisoning or death.
VENT
ALTITUDE
0-7,000

LENGTH

of Furnace

TABLE

MAXIMUM TOTAL EQUIVALENT
LENGTH IN FEET
FOR VENT AND INLET AIR (SEE NOTES)
2 INCH PIPE

2.5 INCH PIPE

3 INCH PIPE

UY/DYO6OR9V3

200

UY/DYO8OR9V3

120

200

UY/DYIOOR9V4

Not Allowed

200

UY/DY120R9V5

Not Allowed

200
3 INCH PIPE

7,000-9,500

Feet

2 INCH PIPE

2.5 INCH PIPE

UY/DYO6OR9V3

1O0

UY/DYO8OR9V3

1O0

UY/DYIOOR9V4

Not Allowed

100

UY/DY120R9V5

Not Allowed

1O0

2 INCH PIPE

2.5 INCH PIPE

3 INCH PIPE

UY/DYO6OR9V3

UY/DYO8OR9V3

Not Allowed

UY/DYIOOR9V4

Not Allowed

UY/DY120R9V5

Not Allowed

9,500-12,000

Feet

NOTES:
* - First letter may be "A" or "T"
1. Minimum vent length for all models: 3' horizontal or 3' vertical.
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 6 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).
4. 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 90 ° elbow is equivalent to 71/2' of 21/2'' pipe or 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 BAYAIR3OAVENTA termination kit is
used, the equivalent length of pipe is 5 feet. BAYVENT2OOB equivalent length is 0 feet.
6. Pipe adapters are field supplied.
Downflow models, UYIO0 and UY120 include a 2" X 3" adapter.

HIGH ALTITUDE DERATE
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 clocldng 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 (min 3.0 - max
3.7 in. W.C. - Natural Gas) or changing orifices (orifice change
may not always be required).
18-CD20D3-21

Installer's
TABLE
8
PART NUMBERS FOR REPLACEMENT

ORIFICES

DRILL
SIZE

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

If the desired input rate cannot be achieved with a change in
manifold pressure, then the orifices must be changed. LP
installations
will require an orifice change.
Important:
Reinstafl the propane orifices
supplied with the equipment.

to the same depth as the orifices

See Table 9 for help in selecting orifices if orifice change is
required. Furnace input rate and temperature rise should be
checked again after changing orifices to confirm the proper
rate for the altitude.
Installation
of this furnace at altitudes above 2,000 ft.
(610m) shall be in accordance with the 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 149.1. Installation
of this furnace at altitudes
above 2,000 ft. (610m) shall be made in accordance
the listed high Altitude Conversion Kit available
this furnace.

Guide

The Vent Length Table on page 16 shows the required vent
lengths for installations
at various altitudes.
An optional
high altitude kit is available for installations
above 5000 feet
(Installations
above 12,000 feet are not allowed).
TABLE 9
Orifice
Twist
Drill
Size
If
Installed
At Sea
Level

ALTITUDE
and

Orifice

ABOVE

Required

SEA

LEVEL

At Other

Elevations

2000

3000

4000

5000

6000

7000

8000

9000

42
43
44
45
46
47
48
49

42
44
45
46
47
48
49
50

43
44
45
47
47
48
49
50

43
44
45
47
47
49
49
50

43
45
46
47
48
49
50
51

44
45
47
48
48
49
50
51

44
46
47
48
49
50
50
51

45
47
48
49
49
50
51
52

46
47
48
49
50
51
51
52

47
48
50
50
51
52
52
52

50
51
52
53
54
55
56
57
58

51
51
52
54
54
55
56
58
59

51
52
53
54
55
55
56
59
60

51
52
53
54
55
55
57
59
60

51
52
53
54
55
56
57
60
61

52
52
53
54
55
56
57
60
62

52
53
53
54
55
56
58
61
62

52
53
54
55
56
56
59
62
63

53
53
54
55
56
56
59
63
63

53
54
54
55
56
57
60
63
64

From

National

FuelGas

Code-

Table

10000

F-4

HORIZONTAL VENTING
NOTE:
Vent termination kit BA YAIR3OAVENTA or BA YVENT2OOB
may be used in addition to the horizontal and vertical
termination options shown in the following figures.

with
with

ELBOW AND TEE MUST
BE AS CLOSE TOGETHER
AS POSSIBLE

POSSIBLE CONFIGURATIONS FOR TWO PIPE VENTING SYSTEMS
18-CD20D3-21

Installer's

Guide

IMP OR TANT:

r!_

Products installed in Canada must use vent systems that
are certified to the Standard for Type BH Gas Venting Systems (ULC $636) for Class 11-,4venting systems (up to
65°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.

:e_lj_o]

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 112inch (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.

DOWNWARD
VENTING
Furnace may be in
verticalor horizontalconfiguration.
f

All horizontal pipes must be
supported at a maximum of
3 foot intervals

I
|

DOWNWARDVENT LENGTH IS I
LIMITED TO A MAXIMUM OF
15 EQUIVALENTFEET.

SEE
NOTES

40 Inch
Upflow or__
Downflow
Furnace

Slope 1/4" per ft.

Slope 1/4" per ft.
÷
,

-F
6" Min.
__t_

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.

18-CD20D3-21

Installer's

Guide

@
COMBUSTION
STRAP

AIR

(FIELD SUPPLIED L
12" MINIMUM
TO OVERHANG

VENT

/
COMBUSTION

VENT
CAP

AIR
(FIELD
SUPPLIED)

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

BAYVENT2OOB

BAYAIR30AVENTA
(Sidewall)

" '.

HORIZONTAL VENT CLEARANCES
(See clearance tables on page 20)

INSIDE
CORNER

DETAIL

i+G

["_

VENTTERMINAL

(_) AIR SUPPLY

INLET

AREAWHERETERMINAL

HORIZONTAL VENTING THROUGH WALL
These furnaces
may be installed
as direct vent (as
shipped)
or as nondirect
vent. Installation
must conform to national,
state, and local codes.
The vent & inlet terminals
must he 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 29 for either direct or nondirect
vent applications.

18-CD20D3-21

IS NOT PERMITTED

PITCH - Venting through the wall must maintain
1/4" per
foot pitched upward to insure that condensate
drains back to
the furnace.
FLI_
GAS DEGRADATION
- The moisture content of the
flue gas may have a detrimental
effect on some building
materials.
This can be avoided by using the 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. Also, silicone caulk all cracks, seams and joints
within 3 feet of the vent terminal.
19

Installer's

Guide

Table 11

Non-Direct

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

Clearance to window or door that may be opened

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 ef 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

Vent Terminal Clearances
Canadian 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 > 100,000 Btuh (30 kw)

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

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

Clearance to nenmechanical air supply inlet to

6 inches (15 cm) fer 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)

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

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

6 feet (1.83m)

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) :l:

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.
:l:. 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.
Table 12

Direct Vent Terminal Clearances
Canadian Installations

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

Clearance to window or door that may be
opened

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 nenmechanical 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

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 > 100,000 Btuh (30 kw)

US Installations
12 inches (30 cm)
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) 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)

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

7 feet (2.13 m) 1-

12 inches (30 cm) :l:

18-CD20D3-21

Installer's

SEE VENT ING TABLE

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

,_-

USE ONLY
STRAPS OR OTHER SUITABLE SUPPORTS AT A
MAXIMUM OF 3' 0" INTERVALS
P"'I

APPROVED
TERMINATION

BAYAIR3OAVENTA

COMBUSTION
AIR INLET

STRAP
SUPPLIED)

(FIELD

COMBUSTION

RAIN CAP

VENT

T/ J
40" UPFLOW
OR
DOWN FLOW/,_ODE

Guide

RRST SUPPORT
SHOULD
BE T
CLOSETO
RIRNACE
CONNECTION
AS

POS:_IBLE

OUTSIDE
WALL

NOTE: ANY FI1-BN,GS PASSING
THROUGH AN UNHEATED SPACE
MUST BE INSULATED

ILF

HI, ,.._.,,2..

CONBUST,ONA,R
"_
SUPPLIED)

45° ELBOW
t/"

.-I_I_L#

L.J[

TEE

I,__,I

.-,
I III _ I

COUPLING

;;_:":'_!_
!i[
......
(:itS!"
:':_

IF NEEDED

(
2% 2-1/2"

or 3" PIPING

....................................................
I_--. i.........................
....................................

"_;

",_'_=_?

OUTSIDE
WALL

.......

3" PIPING

::"._;_,_:

1[_

SEAL ALL /

_1_

_ J

WALL CAVITIES

STUB CUT AT
45 ° ANGLE

i _'_;:_

FIELD SUPPLIED

((
I_

I
H

COUPLING

DVC WALL
MOUNT FLANGE

( PLASTIC

VEN TING
IN. MIP

APPROVED
TERMINATION
[OPTIONAL)
( :)JOIN

PVC
MOUNT

COUPLIN G
( PLASTIC
VENTING )

WALL
FLANGE

[OPTIONAL)

14 6IN,
MIN.
TERMINATION
APPROVED

II(ToJolNT

]
-[
1" CLEARANCE
( AIR SPACE )

12" MIN. ABOVE
NORMALLY EXPECTED

M OCRET_E
NTAL_-_
NORMALLY
EXPECTED
_,NOW ACCUMULATION
12" MIN. ABOVE

INSIDE &

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

SNOW

ACCUMULATION

OUTSIDE

VENTING THROUGH NON-COMBUSTIBLE
I_fPh

1/.4 Inrh

ID_r

WALLS

COMBUSTIBLE MATERIAL WALL
A minimum clearance of i" to combustible materials must be
maintained
when using single wall stainless steel venting.
See Figure 31.

NONCOMBUSTIBLE MATERIAL WALL
The hole through the wall must be large enough to maintain
pitch of vent and properly seal.
Use cement

mortar

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 suited to the outside or
inside wall surfaces.

See Figure

32 above.

18-CD20D3-21

seal on inside and outside

of wall.

Installer's

Guide

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)

SUPPORT HORIZONTAL PIPE EVERY 3'
0" WITH THE FIRST SUPPORT AS CLOSE
TO THE FURNACE AS POSSIBLE.
INDUCED DRAFT BLOWER, HOUSING,

FurnaCE
OTSU
D OT

THE WEIGHT OF THE FLUE PIPE.

NOTE:
No vent cap as shown in Figure 33 is the
preferred method for vertical vent termination in extremely cold climates.

!UTLET

In extreme climate conditions, insulate the
exposed pipe above the roof line with
Armaflex type insulation.

°'

VENT FITTING MATERIAL- STAINLESS
STEEL
Gas and liquid tight single wall metal vent
fitting, designed for resistance to corrosive
flue condensate
such as Type 29-4C MUST
be used throughout.

40" UPFLOW OR DOWNFLOW FURNACE

These fittings and fitting accessories
be supplied locally.

iiiiiiiiiiii
HORIZONTAL AND VERTICAL

are to

VERTICAL

®
VENT

9" MIN.

VENT_'_

I_'_/-

.L-_.

"'"""

12-INCH CLEAr4ANCE MUST BE
AN'nC1PA]ED SNOW LEVEL
MAXIMUM
TO EXCEED
MAINTAINEDNOT
ABOVE
HIGHEST
24 INCHES ABOVE ROOF,

]2' ± ],_1_

MAINTAIN

OF
VENT TO
BOSOM
D,STANCE
FROM
TOP
OF
AIR INLET
MUST
BE 12' ± 1'

)
/
COMBUSTION
AIR
INLET

®
RIBS

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

MAINTAIN

VENT
REMOVE

12 IN.

(18 IN. FOR CANADA)

_i"

MINIMUM

CLEARANCE

_SEAL

BETWEEN

FLANGE,PIPE,

COUPLING
AND METAL PANEL
WITH HI TEMP RTV SILICONE
SEALANT

FROM CAP
ANTICIPATED
COMBUSTION
AIR

SNOW
COUPLING

LEVEL. MAXIMUM OF
BOVE HIGHEST
24 IN. ABOVE ROOF

ROOF BOOT
SUPPORT
FLANGE

suP
(FIELD SUPPLIED)

ELBOW
(FIELD SUPPLIED)

VENT-_

COMBUSTION
AIR

BAYAIR30AVENTA (VERTICAL)
22

CEILING
GALVANIZED
FIRESTOP
SHOULD
BE FABRICATED
WITH 3-7/8" DIA.
HOLE FOR SUPPORT
FLANGE
(12" X 12"

PANEL

OR 12" DIA MIN,)

CLEARANCE
( 1" ACCEPTABLE

{0"
FOR

ACCEPTABLE
TYPE
29-4C

FOR PVC
STAINLESS

VENT
STEEL

PIPE)
VENT

PII::_E )

VENTING THROUGH CEILING
18-CD20D3-21

Installer's

DIRECTION OF STAINLESS STEEL FITTING
All stainless steel fitting must be installed with male end
towards the furnace.

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

COUPLING

GALVANIZED
FLANGE

Guide

PANEL (FIRESTOP)

All horizontal stainless
with the seam on top.
All long horizontal
sagging.

FLOOR

steel sections

sections

must

be positioned

must be supported

All pipe joints must be fastened and sealed
of combustion products into the building.

to prevent

escape

FLUE PIPE

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

VENTING ROUTED THROUGH A MASONRY CHIMNEY

PVC PLASTIC VENTING - ONLY
THROUGH UNUSED CHIMNEY

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

STAINLESSSTEEL
VENTCAP

STAINLESS STEEL
VENTCAP

(OPTIONAL)

//
(OPTIONAL)

SEE CAUTION.

FLUE PIPE _

SEE CAUTION

IN. MIN.

6 IN. MIN.

_j.

COUPLING TO SUPPORT
PIPE FROM ANGLES
OR OTHER SUITABLE

suPPORT
METHOD

"_'_/I
._
.#-._7_.........._
_L..._
"-b_.j//zp
_iF)
"--_."'_._
"_/_, _

\_/
"">._1

SUPPORT THE SINGLE
WALL FLUE PIPE AND
CENTER IT IN THE
CHIMNEY OPENING WITH

ANGLES
ASSHOWN
OR
._

ANOTHER

EQUIVALENT

-__

COUPLING

;_<"_/_S_

AS REQUIRED

SUPPORT
THE SINGLE WALL
STAINLESS
STEEL GAS
VENTING
AND CENTER
IT IN
THE CHIMNEY
OPENING
WITH
ANGLES
AS SHOWN
OR
ANOTHER
MANNER.

EQUIVALENT

FLUE PIPE

_
•

NOTE:
HORIZONTAL VENTING
TO VERTICAL 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.

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-CD20D3-21

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
floor level.

back-up

may be installed

on the next adjacent

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-CD20D3-21

Installer's
ELECTRICAL

CONNECTIONS

Code, if an external electrical source is utilized. 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 hooldng
up an electronic air cleaner and or humidifier is provided on
the integrated
control.

Make wiring connections
to the unit as indicated
on enclosed
wiring diagram.
As with all gas appliances
using electrical
power, this furnace
shah be connected
into a permanently
live
electric circuit.
It is recommended
that furnace
be provided
with a separate
"circuit protection
device" 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

VARIABLE SPEED
2-STAGE FURNACE

T'STAT

[]

FOR VARIABLE SPEED 2 STAGE FURNACE
1 STAGE HEATING
USING A 1 STAGE HEATING THERMOSTAT
NO COOLING
1.
2.
3.
4.
5.

W141
6.
7.
]

W14JUMPER
SEE NOTE 11

9.
10.

[]

11.
[_'_

SEE

L_J

Be sure power agrees with equipment
nameplates.
Low voltage (24 volt wiring) to be No. 18 A.W.G. rain.
Grounding
of equipment
must comply with local codes.
Set thermostat
heat anticipator per unit wiring diagram.
These leads provide 115M power for connection of electronic
air cleaner and humidifier MAX. load 1.0 amps each.
When a single stage heating thermostat
without fan switch
is used, no wiring on "G" terminal is used.
Wl and W2 must be jumpered together for proper operation.
Second stage heat will begin based on IFC swNch setting.
Set dip switches with power off per installation instructions
to set airflow and indoor fan off delays.
Continuous
fan airflow can be increased by adding this jumper.
This wire is only for thermostats
requiring connection to
transformer
common terminal.
Optional humidistat is to be connected
between R and BK. Factory installed jumper R
to BK on the circuit board must be cut if optional humidistat is used. The jumper must
also be cut when applying an airflow command signal to the BK input such as with the
variable speed single-zone and mugi-zone system controllers. On single speed cooling
only/non-heat
pump systems, jumper Y to O for proper operation of the delay profiles

_NOTE9

and the humidistat.
FIELD ADDED JUMPER
Wl TOW2.
_SEE FURNACE WIRING DIAGRAM

,, _

FOR 2ND STAGE TIMING.

SEE
NOTE 6

For two compressor
or two speed systems, jumper YLo to O.
GROU N D
SCREW
[_'_
FUR
NACE

,if

:
SUPPLY PER
...........

[]

)MPONENT

WIRI

----LINE
V.

--L[qE

FAT'.

,.,

F WH

EAC SEE
.....

I
BI,31

I _

\FIELD
,,/., _/ilR[NE
J

__.

_[--_4J

j- WH
_"/I II
L BK--q#--I

......
.....

BOX

I
N

Y
INTE7

JUNCTION

_iK

NOTE 10
[]

....
I

_
i _-I

I
i

,',,IK[No

FromDwg.

FIELD WIRING

and unit wiring

DIAGRAM

[]

]

Refer to the SERVICE FACTS literature
diagram attached to furnace.

Electrical

FIELD WIRING

Guide

B342027Rev.

DIAGRAM

FOR VARIABLE SPEED 2 STAGE FURNACE
2 STAGE HEATING
USING A 2 STAGE HEATING THERMOSTAT
NO COOLING

VARIABLE SPEED
2-STAGE FURRACE
--

T "STAT

[]

1.
2.
3.

agrees

Set thermostat
heat
s. These
leads provide

W14JUMPER
SEE NOTE9

[]

Continuous

Set dip switches
with power off per installation
to set airflow and indoor fan off delays.

Optional
installed

fan airflow

[]

18-CD20D3-21

between R and BK. Factory
board must be cut if optional

is used. The jumper
must also be cut when applying
an airflow
signal to the BK input such as with the variable speed single-zone

and multi-zone
system controllers.
systems,
jumper Y to O for proper
or two speed

On single
operation
systems,

speed cooling only/non-heat
pump
of the delay profiles and the humidistat.
jumperYLo

to O.

_SEE
NOTE 7

NOTE
[]
COvq;ONENT
'/.

L INE
2q

this jumper.

instructions

[]

P4
----

by adding

SEE

[]
II'TE:7

can be increased

humidistat
is to be connected
jumper R to BK on the circuit

For two compressor

ED'

load 1.0 amps each.
requiring
connection
to

humidistat
command

_,,

nameplates.

anticipator
per unit wiring diagram.
115V. power for connection
of electronic

air cleaner and humidifier
MAX.
This wire is only for thermostats
transformer
common
terminal.

[]

with equipment

Low voltage
(24 volt wiring) to be No. 18 A.W.G.
rain.
Grounding
of equipment
must comply with local codes.

[]

Be sure power

/"S
..

Y'.

L INE

'?#]_]NG
!, FIELD
vYlR ING
t. F_

/,j"

'A' I!

TDRY
IN G

From Dwg. B342025

Rev. 0

Installer's

Guide
FIELD WIRING

DIAGRAM

FOR VARIABLE

SPEED 2 STAGE FURNACE

1 STAGE HEATING, 1 STAGE COOLING
USING A 1 STAGE HEATING, 1 STAGE COOLING THERMOSTAT
(OUTDOOR SECTION WITHOUT TRANSFORMER)
VARIABLE SPEED
2-STAGE FURNACE

T'STAT

NOTES:
I

l_2_J

0_\
W14!

POWER

LOW

3
4

GROUNDING
OF
SET
THERMOSTAT

THESE

/
6

THIS
CO

W14JUMPER
SEE
NOTE

THE

SET
TO

LEADS
AND

EQUIPMENT
HEAT

DIP

FROM

POWER

THE

WITH
AND

LOAD

OFF
FAN

MIN

LOCAL
WIRING

CODES
DIAGRAM

CONNECTION

AMPS

ELECTRONIC

AIR

EACH

REQUIRING
TERMINAL
MUST

FURNACE

POWER

WITH
UNIT

THERMOSTAT

THE

INDOOR

FOR

THERMOSTATS
COMMON

DINING
COOLING
TERMINAL
OF

AIRFLOW

NAMEPLATE(S)

COMPLY
PER

MAX

ONLY
FOR
TO
TRANSFORMER

SWITCHES

SET

M
ST
ANTICIPATOR
115

TERMINAL

"Y"

EQUIPMENT
TO

HUMIDIFIER
IS

"Y"

WITH

WIRING)

PROVIDE

WIRE
NECTION

OPERATION
TO
THE

AGREES

VOLTAGE(Z4

CLEANER

CONTROL

PER
OFF

WIRED

FOR

PROPER

INSTALLATION

BLOWER

INSTRUCTIONS

DELAYS

OUTDOOR UNiT
(NOTRANSFORMER}
D

OPTIONAL
INSTALLED

SEE

HUMIDISTAT
J£TPER

HUMIDISTAT
COMMAND

I":_1

NOTE7

SYSTEMS
AND
MULTI
HUMIDISTAT

IS
SIGNAL

JUMPER
ZONE
FOR

IS
TO

USED
TO

TO
BE
BK
ON

THE
THE

FOR

2ND

STAGE

TIMING.

j
TO

115V

1PH.,

[--

LH
....

SUPPLY
PER
LOCALCODES

NOTE5

WIRING
EAC

V._W[RING
_\

--LINE

V._'_

AIRFLOW
ZONE

DELAY
A O HEAT
THE
COOLING PROFILES
ONLY/NON
JUMPER
YLO
TO
0

PUMP

F U R N ACE
....
JUNCTION
BOX

.....

,
I
I

--I..._S

I BK--4

SEE

FACTORY

I
I'll

,I_

Be ["

WH
HUMSEE

•

----LINE

.Z_
BK

WHEN
APPLYING
AN
VARIABLE
SPEED,SINGLE

OF SPEED
THE
SYSTEMS,

L Fr -=F 4J Tq

COMPONENT

INTER

OPERATION
ON
SINGLE
TWO
SPEED

R AND
BK.
FACTORY
MUST
BE
CUT
IF
OPTIONAL
CUT
THE

BoHZ,POVVER
!
SEE

BETWEEN
BOARD
ALSO
BE
AS
WITH

_Cs_-_}_

W2.

SEEFURNACEWIRINGDIAGRAM

L__[J

MUST
S CH

Y TO
0 CONTROLLERS,
FOR
PROPER
SYSTEM
TWO
COMPRESSOR
OR

FIELD ADDED JUMPER

CONNECTED
THE
CIRCUIT

JUMPER
INP

I
--

a_/21
I

I'_--_
FromDwg. B342022Rev.

W[ _ IN G

FIELD WIRING DIAGRAM FOR VARIABLE SPEED 2 STAGE FURNACE
2 STAGE HEATING, 1 STAGE COOLING
USING A 2 STAGE HEATING, 1 STAGE COOLING THERMOSTAT
(OUTDOOR SECTION WITHOUT TRANSFORM ER)
VARIABLE

T'STAT

SPEED

2-STAGE

[]

FURNACE

]

0-\

W14/i

[]

SEE
NOTE

W14 JUMPER
SEE NOTE 9

L--_F]

[]

OUTDOOR UNIT
(NOTRANSFOnMEn)

SEE

NO E7
[]

[]

NOTE:
I
BE SURE POWER AGREES WITH EQUIPMENT NAMEPLATE(S)
2
LOW VOLTAGE [24V
WIRING) TO BE NO IBAWGMIN
S
GROUNDINGOF EQUIPMENTMUST COMPLY WITH LOCAL BUILDING CODES
4
SET THERMOSTATHEAT ANTICIPATOR PER UNIT WIRING DIAGRAM
5
THESE LEADS PROVIDE 115V POWERFOR CONNECTIONOF ELECTRONIC
AIR CLEANER AND HUMIDIFIER MAX LOAD IO AMPS EACH
6
THIS WIRE IS ONLY FOR THERMOSTATSREQUIRING CONNECTIONTO
TRANSFORMERCOMMONTERMINAL
7
THE IIyII
TERMINAL FROM THE THERMOSTAT MUST BE WIRED TO THE
IIyII TERMINAL OF THE FURNACECONTROL FOR PROPER BLOWER
OPERATION DURING COOLING
8
SET DIP SWITCHES WITH POWEROFF PER INSTALLATION INSTRUCTIONS
TO SET AIRFLOW AND INDOORFAN OFF DELAYS
9
OPTIONAL HUMIDISTAT IS TO BE CONNECTEDBETWEEN"R" AND "8H"
FACTORY INSTALLED JUMPER "R" TO "BK" ON THE CIRCUIT BOARDMUST
BE CUT IF OPTIONAL HUMIDISTAT IS USED THE JUMPERMUST ALSO BE
CUT WHENAPPLYING AN AIRFLOW COMMANDSIGNAL TO THE "BK" INPUT
SUCH AS WITH THE VARIABLE SPEED SINGLE ZONE AN[) MULTI ZONE
SYSTEM CONTROLERS ON SINGLE SPEED COOLING ONLY / NON HEAT PUMP
SYSTEMS, JUMPER "Y" TO "0" FOR PROPER OPERATION OF THE DELAY
PROFILES AND THE HUMIDISTAT FOR TWOCOMPRESSOR OR TWOSPEED
SYSTEMS, JUMPER IIyLOll TO IIOlI

[]
SEE

[]

NOTE°
i

INTER

COMPONENT
24

----LINE

WIRING

FIELD
WIRING

FACTORY
WIRING

From Dwg

24
--LINE

B342020

Rev O

18-CD20D3-21

Installer's

Guide

FIELD WIRING DIAGRAM FOR VARIABLE SPEED 2 STAGE FURNACE
2 STAGE HEATING, 2 STAGE COOLING
(OUTDOOR SECTION WITHOUT TRANSFORMER)
VARIABLE
2-STAGE

T'STAT

NOTES

SPEED
FURNACE

I. BE

l-q
@
F-q
Fq

OUTDOORUNITNO 1
(NO TRANSFORMER)
SEE NOTE3

?UT_OO;%T&O
d
'

Eg
E2]
D

[]

FACTORY

24
LINE

CONDENSATE

DRAIN

]
V.J
_
V.J f

SET

THESE

AGREES

THERMOSTAT
LEADS

EQUIPMENT

ANTICIPATOR
115 V.

HUMIDIFIER

PER

POWER

MAX.

THIS
WIRE
CONNECTION

THE
"Y2"
TERMINAL
PROM
THE
TO THE
"Y" TERMINAL
OF THE
OPERATION
DURING
COOLING.

LN]T

FOR

LOAD

AMPS

BKL'_WH.,

60 HZ., POWER
SUPPLY PER
LOCALCODES

RHI

I
II

.,--_=F_

L----

INSTRUCTIONS

II
I
,

_ --_j

,-WH I /'_'

BLOWER

Box

so._v,pH
I-L"

NOTE

BE WIRED
FOR
PROPER

r JUNCTION

AIR

REQUIRING
TERMINAL.

THERMOSTAT
MUST
FURNACE
CONTROL

ELECTRONIC

TO BE CONNECTED
BETWEEN
R AND BK= FACTORY
BK ON THE
CIRCUIT
BOARD
MUST
BE CUT
IF OPTIONAL
JUMPER
MUST
ALSO
BE CUT
WHEN
APPLYING
AN AIRFLOW
BK INPUT
SUCH
AS WITH
THE
VARIABLE
SPEED
SINGLE
ZONE
CONTROLLERS:
ON SINGLE
SPEED
COOLING
ONLY!NON
HEAT
TO 0 FOR PROPER
OPERATION
OF THE
DELAY
PROFILES
TWO COMPRESSOR
OR TWO SPEED
SYSTEMS,JUMPERYLOTO
O.

',1

NU_SEEJ
'"''J

DIAGRAM=
OF

EACH.

WITH
POWER
OFF PER
INSTALLATION
AND
INDOOR
FAN
OFF
DELAYS.

9= OPTIONAL
HUMID]STAT
iS
INSTALLED
JUMPER
R TO
HUM]D[STAT
IS USED.
THE
COMMAND
SIGNAL
TO THE
AND MULTI
ZONE
SYSTEM
PUMPSYSTEMS,
JUMPER
Y
AND THE HUMID]STAT.
FOR

CODES.

WIRING

CONNECTION

1.0

ONLY
FOR THERMOSTATS
TO TRANSFORMER
COMMON

SET
DIP SWITCHES
TO SET
AIRFLOW

NAMEPLATE/SI

TO BE NO.
18 A.W.G.
M]N.
MUST
COMPLY
WITH
LOCAL

HEAT
PROVIDE

AND

WITH

V. WIRING}
EQUIPMENT

Bwl

I1_

°vl

EACSEEF----/ ,I_1 ,

WIRING

24
V.
LINE

JUMPER

i
i

INTER-COMPONENT

LOW VOLTABEI24
GROUNDING
OF

INSTALLEO

f-q
[]
[]
t2

SEE
NOTE6

POWER

2.
3.

CLEANER

SEE
NOTE 7

t 0/

0_\

SURE

FIELD
wIRING

NOTE

.____

From

Dwg.

B342018

aev.

FACTORY
wIRING

INSTRUCTIONS

r'!'_ [*,]'i_lj i [0] _I

@i'

It is recommended that a drain pan be installed under the
furnace to prevent property damage, personal injury or
death from leaking condensate.

Evaporator and furnace condensate drain piping may be
manifolded together. A primary drain vent stack must be
installed
and terminated
below the outlet of the secondary
heat exchanger drain connection to prevent water from
damaging furnace controls if the primary drain outlet plugs
up. Where the furnace is installed above a finished ceiling,
the primary drain vent stack must be installed such that
overflow from the vent stack opening will flow into an axillary
drain pan in order to prevent water damage to the finished
ceiling below.

If upflow
over
from
stack
drain

furnace

is installed

a finished
ceiling, overflow
the primary
drain vent
must flow into an auxiliary
pan to prevent damage
to

the finished

ceiling

below.

Primary drain vent stack
must terminate
below
_:
secondary
condensate

heat exchanger
drain outlet.

°
To drain

opening

N
18-CD20D3-21

---_

/ _:--_-i

i°

\
27

Installer's
VERTICAL

Guide

APPLICATIONS

HORIZONTAL

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 ldnks.
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 to clean the trap.

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
auxiliary 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

Left side

Right side

UPFLOW (VERTICAL)

Use

extension
hose here

Use Inducer Drain
hose without
extension

UPFLOW HORIZONTAL 17" UNITS
(Left side only)
28

UPFLOW HORIZONTAL 21" & 24" UNITS
(Left side only)
18-CD20D3-21

Installer's

Guide

the secondary recuperated
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
Outdoor draining of the furnace and coil condensate

DRAIN.
is
Cut off curved end of
Inducer drain hose

DOWNFLOW (HORIZONTAL)
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 ifa
pump is required for a specific drain system.
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, ff
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 120 volts. Self-regulating
(preferred) or thermostatically controlled heat tape is required.

DOWNFLOW (VERTICAL)

Right
side

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

DOWNFLOW (VERTICAL)
18-CD20D3-21

Installer's

Guide

AUTOMATIC GAS VALVE
WITH MANUAL SHUT-OFF

MAIN MANUAL

AUTOMATIC GAS VALVE
WITH MANUAL SHUT-OFF

MAIN MANUAL
SHUT-OFF VALVE

GROUND
UNION
JOINT

SHUT-OFF VALVE

JOINT

DRIP
LEG

DRIP_

.....

LEG

UPFLOW MAY BE LEFT OR RIGHT HAND GAS PIPING

@
:_

iiiiiiiiiiii

Y
THE DOWNFLOW (VERTICAL) MAY BE INSTALLED LEFT OR RIGHT SIDE GAS PIPING
AUTOMATIC GAS VALVE
WITH MANUAL SHUT-OFF

MAIN MANUAL
SHUT-OFF _
VALVE

GROUND UNION JOINT

LEGDRIP

FLOW

SHUT-OFF VALVE

I I
GRO
UNION JOINT

DRI
LEG

AUTOMATIC GAS VALVE
WITH MANUAL SHUT-OFF

[_:_

HORIZONTAL
FURNACE GAS PIPING MAY BE FROM EITHER SIDE
(Typical UPFLOW Furnace in horizontal configuration shown)

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

18-CD20D3-21

Installer's
GAS PIPING
The upflow/horizontal
furnace is shipped standard for left
side installation
of gas piping. A knockout is provided on the
right side for an alternate gas piping arrangement.
See Figure
42.
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 43 & 44. National codes
require a condensation
drip leg to be installed ahead of the
controls as shown in Figures 43 & 44.
The furnace and its individual shut-offvalve
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).
The furnace must be isolated from the gas supply piping by
closing 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.
TABLE 10
NATURAL

GAS ONLY

LENGTH

5. Use the following factors if necessary:
For i 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

7. Changes can be made by adjusting the manifold pressure
(See Table 12), 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 36E or boss marked
"OUT P" on White-Rodgers
gas valve model 36G. (See
Figure 45 for White-Rodgers
gas valve model 36E and
Figure 46 for White-Rodgers
gas valve model 36G).
For the gas valve model 36E, measurements
require
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. Loosen the
pressure tap test screw one turn and install flexible
tubing and a manometer
directly onto the outlet
pressure boss.

OF PIPE

SIZE

Turn on system power and energize

1/2

132

For the White-Rodgers

3/4

278

190

152

130

115

105

520

350

285

245

215

195

180

1050

730

590

520

440

400

370

1-1/4

This table is based on Pressure Drop of 0.3 inch W.C. and 0.6 SRGR. Gas

All gas fittings must be checked for leaks using a soapy solution
be[bre lighting the furnace. DO NOT CHECK WITH AN
OPEN FLAME!

TABLE 11
ORIFICE SIZES
INPUT
RATING
BTUH

NUMBER
OF
BURNERS

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

3
4
5
6

MAIN BURNER ORIFICE
DRILL SIZE
NAT. GAS

LP GAS

45
45
45
45

56
56
56
56

COMBUSTION AND INPUT CHECK
(See also High Altitude Derate, page 16)
1. Make sure all gas appliances are offexcept

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
with the time clocked.

in the gas flow (in cfh) Table 13

4. Read the "Flow" column
clocked.

opposite

18-CD20D3-21

the number

+ 4

6. 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.

c. The other side of the manifold pressure
gauge must
be referenced
to the burner box as shown in Figure 48.

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

Guide

valve.

gas valve model 36E:

1. Adjust low fire by removing
seal screw (See Figure 45).

the low adjustment

2. To increase outlet pressure, turn the 3/32" socket
set screw clockwise. To decrease outlet pressure,
turn the set screw counterclockwise.
Adjust
regulator until pressure shown on manometer
matches the pressure specified in Table 12.
3. Replace low adjustment
securely.

seal screw and tighten

4. Cycle the valve several
setting.

times to verify regulator

5. Adjust high fire by removing
seal screw (See Figure 45).

the high adjustment

6. To increase outlet pressure, turn the 3/32" socket
set screw clockwise. To decrease outlet pressure,
turn the set screw counterclockwise.
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.
7. Replace high adjustment
securely.
8. Cycle the valve several
setting.

seal screw and tighten
times to verify regulator

of seconds

Installer's

Guide

f. For the White-Rodgers

gas valve model 36G:

1. Adjust low fire by removing the low adjustment
regulator cover screw (See Figure 46).

2nd Stage (HI) Manifold
Pressure Adjustment

2. To increase outlet pressure, turn the regulator
adjust screw clockwise. To decrease outlet pressure, turn the regulator adjust screw counterclockwise. Adjust regulator until pressure shown on
manometer
matches the pressure specified in
Table 12.
3. Replace and tighten
securely.

the regulator

4. Cycle the valve several
setting.

cover screw

times to verify regulator

5. Adjust high fire by removing the high adjustment
regulator cover screw (See Figure 46).

White-Rodgers 36G gas valve

6. To increase outlet pressure, turn the regulator
adjust screw clockwise. To decrease outlet pressure,
turn the regulator adjust screw counterclockwise.
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.
7. Replace high adjustment
tighten securely.
8. Cycle the valve several
setting.

regulator

ROTATE THE FRONT
COVER AS SHOWN

cover screw and

INSERT THE TOP FLANGE
OF THE FRONT COVER
UNDER THE LIP INSIDE
THE BOX

times to verify regulator

Turn off all electrical power to the system.
g.
h. Remove the manometer
and flexible tubing. Remove
the barbed fitting and replace the plug or tighten the
pressure test screw.

iiiiiiiiiiii

Turn on electrical
valve.

ALL SIDE FLANGES MUST
BE OUTSIDE OF THE BOX

power to the system and energize

ROTATE THE FRONT
COVER INWARD MAKING
SURE THAT ALL SIDE
FLANGES ARE OUTSIDE
OF THE BOX.

j. Using a leak detection

solution or soap suds, check for
leaks at plug or pressure boss screw.

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 48.

White-Rodgers 36E

1st Stage (LO)
Manifold Pressure
Adjustment

Gas Valve On / Off
Toggle Switch

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.
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.
TABLE 12

2nd Stage (HI)
Manifold
Adjustment

Gas Valve On / Off
Toggle Switch

FINAL MANIFOLD PRESSURE SETTINGS (inches w.c.)
FUEL

2nd Stage Max.

1st Stage Max.

NATURAL GAS

3.5" W.C.

1.7" W.C.

LP GAS

10.5" W.C.

6.0" W.C.

1st Stage (LO)
Manifold
Pressure
Adjustment

18-CD20D3-21

Installer's

Guide

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

Separatethetube
at the unit Tee and
reconnect with a
short piece of field
supplied tube and
another Tee with
the "U" Manometer
attached.

I I
Fh
"J
-2
.IS/

_' !\
I] "_t
[] I
11 I / I
I /[[
| [[

//I

Return all tubing, caps,
and/or plugs to original
positions when pressure
checks are completed.

=esure
toreconnect
I/ i 'bhJS
jr [
unit tubing to original
-_
_\ _/
position after testing
the manifold pressure!

_--_k_
L._::::::=::==
k_>/(z-\ _.,

Field supplied barb fltling_J
with manometer tube is
attached to the "OUTLET
PRESSURE TAP" on the
outlet side of the gas valve.

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

PART

NUMBERS

TABLE 14
FOR REPLACEMENT

_.
'_

REINSTALLATION OF THE BURNER BOX COVER
Figure 47 shows the correct way to reinsta]] the burner box
cover if adjustment
or rep]acement
of the flame sensor, hot
surface igniter, or main burner orifices have required removal
of the cover.

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
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.

ORIFICES

DRILL
SIZE

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

18-CD20D3-21

Installer's
START-UP

Guide

AND ADJUSTMENT

SEQUENCE OF OPERATION

PRELIMINARY INSPECTIONS

power

are properly

Thermostat call for heat (2-stage thermostat)
Call for 1st stage only:
W1 thermostat
contacts close signaling the control module to
run its self-check routine. After the control module has
verified that the 1st stage 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 approx. 20 seconds, then the
gas valve is energized in 1st stage to permit gas flow to the

"OFF"
sealed

are in place

burners.

3. Venting

is properly

assembled
The flame sensor confirms that ignition has been achieved
within the 4 second ignition trial period.

4. Blower door is in place
Turn the main gas valve toggle switch (See Figures 44 & 45)
within the unit to the "OFF" position. Turn the external gas
valve to "ON". Purge the air from the gas lines. After purging,
Check all gas connections for leaks with a soapy solution -DO NOT CHECK WITH AN OPEN FLAME. Allow
5 minutes for any gas that might have escaped to dissipate.
LP Gas being heavier than air may require forced ventilation.
Turn the knot) on the gas valve in the unit to the "ON"
position.
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 shutdown: Turn the gas cock knob on the main
gas valve to the "OFF" position (See Figures 41-43). Disconnect the electrical supply to the unit.

If this is done during the cold weather months, provisions
must be taken to prevent freeze-up of all water pipes and
water receptacles.
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.

As the flame sensor confirms that ignition has been achieved,
the delay to fan ON period begins timing and after approx. 45
seconds the indoor blower motor will be energized at low
speed and will continue to run during the heating cycle.
Call for 2rid stage after 1st stage:
W2 thermostat
contacts close signaling a call for 2nd stage
heat. After a 30 second delay, the induced draft blower will be
energized on high speed and the 2nd stage pressure switch
contacts will close. The gas valve is energized in 2nd stage
and the indoor blower motor in high speed.
2nd stage satisfied,
1st stage still called:
W2 thermostat
contacts open signaling that
heating requirements
are satisfied.

2nd stage

The induced draft blower is reduced to low speed allowing the
2nd stage pressure switch contacts to open and the gas valve
is reduced to 1st stage. The indoor blower motor is reduced to
low speed.
1st stage satisfied:
W1 thermostat
contacts open signaling that 1st stage
heating requirements
are satisfied.
The gas valve will
and the induced draft blower will be de-energized.
The
blower motor will continue to run for the fan off period
selectable at 60, 100, 140 or 180 seconds), then will be
energized by the control module.

close
indoor
(Field
de-

Thermostat call for heat (1-stage Thermostat)
W1/W2 (jumpered) thermostat
contacts close signaling a call
for heat. 1st stage sequence of operation remains the same as
above. 2nd stage heat will energize after the stage delay
timer (field selectable at .5, 5, 10 or 15 minutes) has expired.
Thermostat
satisfied:
W1/W2 (jumpered) contacts open signaling the control
module to close the gas valve. The induced draft blower is
switched to low speed and de-energized after the post purge
timer has expired. The indoor blower motor will continue to
operate after the flames are extinguished
and then is
switched to low heat speed for the FAN-OFF period.

18-CD20D3-21

Installer's
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 hlitial start up by the hlstaller.
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 maxi* - This setting is equivalent
benefit.

to BAY24X045

Disconnect power to the unit before removing the blower
door. Allow a minimum of 10 seconds for IFC power supply
to drain to 0 volts. Failure to follow this warning could result
in property damage, personal injury or death.
INDOOR BLOWER TIMING
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 SW-2, #1 and #2 at 60, 100, 140, or 180 seconds.
The factory setting is 100 seconds.
WI-W2 stage delay (jumpered together) is field selectable by
dip switch SW-1, #1 and #2 at .5, 5, 10 or 15 minutes.
The
factory setting is 10 minutes. (See wiring diagram).

relay

**- This selection provides ENHANCED MODE, which
is a ramping up and ramping down of the blower
speed to provide improved comfort, quietness, and
potential energy savings. See Wiring Diagram
notes on the unit or in the Service Facts for complete wiring setup for ENHANCED MODE. The
graph which follows, shows the ramping process.

100% if necessary
80%

50%

Guide

Cooling: The fan delay-offperiod
is set by dip switches on the
Integrated
Furnace Control. The options for cooling delay off
is field selectable by dip switches #5 and #6.
The following table and graph explain
COOLING

the delay-off settings:

OFF - DELAY OPTIONS

SWITCH SETTINGS

SELECTION

NOMINAL
AIRFLOW

5 - OFF

6 - OFF

NONE

SAME

5 - ON

6 - OFF

1.5 MINUTES

100% *

5 - OFF

6 - ON

3 MINUTES

50%

50- 100%

50%

5-ON
:ast Cooling

OFF

I,I
minute

75
minutes

I 3 I
minutes

See Wiring Diagram on the unit or in the Service Facts
for complete wiring setup for Enhanced Mode.
mum 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
Service Facts for additional instructions.
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 Airflow Label on the furnace or the unit's Service Facts for
information
on changing the speed of the blower motor for
your specific model. Blower speed changes are made on the
Integrated
Furnace Control (IFC).
There is a bank of 8 dip switches located near the thermostat
connections to the Integrated
Furnace Control. The dip
switches work in pairs to match the airflow for the outdoor
unit size (tons), cooling airflow adjustment,
cooling off-delay
options, and furnace heating airflow adjustment.

18-CD20D3-21

6-ON

Efficiency

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 door removed or ajar can
permit the escape of dangerous fumes. All panels must be
securely closed at all times for safe operation of the furnace.
NOTE TO INSTALLER
Review the following warnings with the owner. Review
contents of USER'S INFORMATION
MANUAL with the
owner.

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 offall flow of gas.

Installer's

Guide

ABNORMAL CONDITIONS
1. EXCESSIVE
COMBUSTION
PRESSURE
(WIND IN
EXCESS OF 40 MP.H.) VENT OR FLUE BLOCKAGE
On a call for heat, the variable speed draft inducer must
first ramp up to speed and close the pressure switch
before the ignition sequence is allowed to begin. If the
pressure switch does not close, the motor will ramp up to
maximum speed and continue to operate there for about
1 minute. After one minute the integrated
furnace
control will turn the motor off for about 30 seconds then
back on in an attempt to reestablish
proper operation.
This condition is indicative of a highly restricted
or
blocked inlet or outlet vent pipe or a failed pressure
switch.
If pressure against induced draft blower outlet becomes
excessive, the pressure switch will open. If the pressure
switch is open for more than 3.5 seconds, the variable
speed draft inducer will speed up and attempt to close
the pressure switch.
If the pressure switch is not closed within 12 seconds or if
the maximum speed of the motor is reached, the draft
inducer sends a fault signal to the integrated
furnace
control. If the unit is operating in second stage, an
inducer fault will cause the furnace control to transition
the system to first stage and it will operate there for 10
minutes before attempting
to run again in second stage.
If the unit is operating in first stage, an inducer fault will
cause the furnace control to shut the system down and
wait 30 seconds before attempting
to reestablish
operation in first stage.

5. INDUCED DRAFT BLOWER FAILURE
Please refer to the variable speed &'aft inducer
shooting manual for diagnostic assistance.

trouble-

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 unit will not operate properly until the condensate
drain has been cleared, and the condensate flows freely.
7. RESET AFTER 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.
The system can be
reset by turning the system power offfor more than
i second, or by removing 24VAC from the control for more
than 1 second, or by removing the thermostat
call for
heat for more than 1 second but less than 20 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.

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 offthe 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.

18-CD20D3-21

Installer's
INTEGRATED

FURNACE

CONTROL

RED LED "ERROR"
or Recycles

Guide

FLASH CODES

2 Flashes ---

System Lockout (Retries

exceeded)

3 Flashes ---

Draft Pressure Error- Possible problems:
a) Venting problem
b) Pressure switch problem
c) Inducer problem

4 Flashes ---

Open Temperature

5 Flashes---

Flame sensed when no flame should be present

6 Flashes--7 Flashes ---

115 volt AC power reversed,
system voltage too low
Gas valve circuit error

8 Flashes ---

Low flame sense

9 Flashes --10 Flashes ---

Open Inducer Limit switch
Inducer communication
error

Solid ---

Internal GV error or Low TH voltage

Solid Red w/Solid
Green "STATUS" LED

Continuous

Limit Switch

Reset caused

ignitor (Triac) fault, poor grounding

by a blown fuse or internal error.

FAULT CODE RECOVERY
On power up, last 4 faults, if any, will be flashed on the red
LED. The newest fault detected will flash first and the oldest
last. There will be a 2 second delay between fault code
flashes. Solid red LED error codes will not be displayed.
The Green LED will be on solid during last fault recovery.
At any other time the control is powered, the Green LED
indicator light will operate as shown in Table 14 and the red
LED will flash LitePort data (one flash) every 20 seconds.
TABLE 15

INTEGRATED
GREEN

FURNACE

"STATUS"

CONTROL

LED FLASH

Green Status LED

CODES

Flashing

Slow ---

Normal

- No call for Heat

Flashing

Fast ---

Normal

- Call for Heat

Fault Code Reset
The last 4 fault codes can be erased from memory by powering up the control with "G" energized and then applying "R" to
the "WI" terminal 3 times within 6 seconds. The control will
acknowledge the reset by turning on the red LED for 2 seconds.

18-CD20D3-21

Installer's

Guide

Tl_e
6200 Troup Highway
Tyler, TX 75707

For more information contact
your local dealer (distributor)

Since the manufacturer

has a policy of continuous product and product data improvement,

to change design and specifications

it reserves the right

without notice.

18-CD20D3-21

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.2
Linearized                      : No
Page Count                      : 38
Page Layout                     : SinglePage
Page Mode                       : UseNone
Producer                        : Goby Monitor Application version 4, 0, 0, 13
Create Date                     : Sun Mar 08 04:26:23 2009
Author                          : 
Title                           : 
Subject                         :

EXIF Metadata provided by EXIF.tools

TRANE Furnace/Heater, Gas Manual L0902557

Navigation menu

Versions of this User Manual:

Views

Navigation