TRANE Furnace/Heater, Gas Manual L0902549

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

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IIIIII IIIIIII IIIIIII IIIIII II
1 8- CD1 9 D8- 1 5

Upflow / Horizontal & Downflow / Horizontal,
Gas-Fired, Direct Vent, 2-Stage Condensing
Furnaces with Variable Speed Inducer
*UX2B060A9362A
*UX2D120A9602A
*DX2C100A9482A

*UX2B080A9422A
*DX2B060A9362A
*DX2D120A9602A

*UX2C100A9482A
*DX2B080A9422A

*__First letter may be "A" or "T"
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.

*UX2

*DX2

DOWNFLOW
A!R
FLOW
A/R
FLOW

UPFLOW

AIR
FLOW

UPFLOW/HORIZONTAL

LEFT

DOWNFLOW/HORIZONTAL

/
i

RIGHT

FLOW

°
A341624P03

Installer's

Guide

SAFETY

SECTION

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

1. Use only with the type of gas approved for this furnace.
Refer to the furnace rating plate.
2. Install this furnace only in a location and position as
specified in "Location and Clearances" (page 3), of these
instructions.
3. Provide adequate combustion and ventilation
air to the
furnace space as specified in "Air for Combustion and
Ventilation" (pages 7-8), 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 13-23), 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.
10. This product must be gas piped by a Licensed Plumber or
Gas Fitter in the Commonwealth
of Massachusetts.

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.
© 2008 Trane

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.

Safety signal words are used to designate a degree or level
of seriousness
associated
with a particular
hazard.
The
signal words for safety markings
are DANGER, WARNING,
and CAUTION.
a. DANGER indicates an imminently hazardous situation
which, if not avoided, will result in death or serious injury.
This signal word is limited to the most extreme situations.
b. WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
c. CAUTION indicates a potentially hazardous
situation
which, if not avoided, may result in minor or moderate

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.
1 8-CD1 9D8-1 5

Installer's
GENERAL

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
BAYMFGH001A.
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

8. If the furnace is installed in a residential
garage, it
must be installed so that the burners, and the ignition
18-CD19D8-15

Guide

are

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

Start-up

and Adjustment

Preliminary Inspections
Lighting Instructions
Sequence of Operation
Control and Safety Switch Adjustments

Abnormal

Conditions

IFC Error Flash Codes
Fault Code Recovery
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.
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.
3

ii
4_

*UX2 UPFLOW / HORIZONTAL

OUTLINE

DRAWING

,l-m..

-,-- 5/8"

(ALL

4- I/ilJ

ltl

IN INCHES)

Ill

_---r_2"FLUE

I
I

CONNECT

II
II

01_0

AIR /._

ARE

DIM "B"

OUTLET t°_

DIM "C"

DIMENSIONS

SEE NOTES I & 2
"E"

5/8" J
"'--4-1/16"

OUTSIDEAIR
7/8" HOLE_
ELECTRICALLY....
SUPPLY
,_._
1/78" x 7/8"_

7/8" KNOCKOUT
ELECTRICAL
SUPPLY
(ALTERNATE)

ONLY)

, ',1-3-15/16"

_
....

SIDE

SLOT KNOCKOUT
CONDENSATE DRAIN
(HORIZONTAL)

"--2-1/16"

IZONTAL

-¢1-1/2"

APPLICATION
I/2"_

-_1-1/2"
KNOCKOUT
GAS SUPPLY
(ALTERNATE)

GAS

SUPPLY

I-I/8"
KNOCKOUTCONDENSATE DRAIN

[

"-2-1/8"

I/8"

KNOCKOUT
DRAIN
(ALTERNATE)

__T

I-5/16"--=-

40"

;0-5/8"

18-

I -7/8

22-

2 ii

/4"

23-3/4"
--,_

--__20-1/4"
5 "

28- I / 2" -_,.

DIM "A" ---,'-

-,- I/2"

MINIMUMCLEARANCETO
COMBUSTIBLE

Model
(See Note 1 & 2)

-i
_1

DIM "A"

DIM "B"

DIM "C"

DIM "D"

DIM "E"

DIM "F"

*UX2B060A9362A
*UX2B080A9422A

17-1/2"

2-1/4"

16-1/4"

16"

7-1/2"

*UX2C100A9482A

21"

2-1/2"

19-3/4"

19-1/2"

*UX2D120A9602A

24-1/2"

2-15/16"

23-1/4"

23"

10"

DIM "D"

AIR
INLET

I "• I

* Prefix

3/4,,_3/4"

--_

24-

I/32"

_-J

3-7/32"

May Be "A" or "T"

Notes:
1. *UX2D120A9602A

Requires

3" Diameter

Vent Pipe.

*UX2C100A9482A
Requires 2-1/2" or 3" Diameter
Vent Pipe.
2. Diameter
of Vent Pipe may be limited to 2-1/2" or 3" on some

models

at different

proper

application.

ED
oo
i
ol

From Dwg. 21C341884 Rev. 1

altitudes.

Refer to the Vent Length

Table for

SIDES
REAR
FRONT
TOP
FLUE

MATERIALS
O
0
3
I
0

IN.
IN.
IN,
IN.
IN.

HORIZONTAL(FLUE
BSCHARGE ON THE LEFTI
ALCOVE
SIDES
RIGHT
O IN
LEFT
O 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
IN
IN,

Ill

n_
iI

*DX2 DOWNFLOW

oo
i
©
0

.......
_2" F u
,

qo
0
oo

CON'\ECT
SEE IOTE

/ HORIZONTAL

OUTLINE

DRAWING

(ALL DIMENSIONS ARE IN INCHES)
J

t_n

....... 19 5'8 .......
/
/

,; llOlR z.N '.
',, IS
_i i
,,

t,,_l
. I

C,\I

/
2-i ,'8 .........
"-

_,S,'8'
(ONNIC

L C R CAL
ON AI Ei!'NA I

,_'S'/6'
i( IRICA
CONN ?liON
,*,L ERNAIE)
NOC Oi

k c,,,INE_T k.

' 0 "

i
0

?5"
/z"

i
!
DIM "A"

,.-.-

23/i6"

"--- ¢

......
s

,,,Jr ,E
If --w
,,,,J u v

DA
T,

MINIMUM CLEARANCE TO
COMBUSTIBLE MATERIALS

Model
(See Note 1)

DIM "D"

!
A
3/4
o_ a,,
6,_
....

DIM "B"

DIM "C"

DIM "D"

*DX2BO60A9362A
*DX2BO80A9422A

17-1/2"

2-1/4"

16-1/4"

16"

*DX2C100A9482A

21"

2-1/2"

19-3/4"

19-1/2"

*DX2D120A9602A

24-1/2"

2-15/16"

23-1/4"

23"

i 7 _,,4"
Prefix May Be "A" or "T"

From Dwg. 21C341885 Rev. 1

DIM "A"

Notes:
1. Diameter of Vent Pipe may be limited
to 2-1/2" or 3" on some models at
different altitudes. Refer to the Vent
Length Table for proper application.

DOWNFLOW
SIDES
REAR
I ROi' I
O[
i I bE

0
0
3

',
N
N

HORIZONTAL (FLUE
DISCHARGE ON THE LEFT)
ALCOVE
SIDES
RI iT
0 \
REAR
iRON[
-OR
FlU

6
18
0

_N
N
N
\

Itl

Iit
m
m

I1
II

CLOSET
SIDES
[EFT
REAR
FRONT
lOP
F I U_

;N
_N
_N
iN
iN

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

SCREWS

(4)

FOR VERTICAL

TABLE 1
CABINET
RETURN
FLOOR OPENING PLENUM OPENING
WIDTH DUCT WIDTH
"A....
B....
C....
D"
14-1/2"

13-1/4"

13-5/8"

20-1/8"

12-5/8"

19-3/8"

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"

23-1/4"

23-5/8"

20-1/8"

22-5/8"

19-3/8"

24-1/2"

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.

DOWNFLOW

STANDOFFS
(BOTH

DOWNFLOW
(_

INSTALLATIONS
CABINET
SIDE
SUB-BASE

FLANGE
(BENT UP)

DUCT

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.
Required floor opening: (DOWNFLOW)
See Figure 3 and Table I

ONLY

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.

SIDES)

CABINET
SIDE
SUB-BASE

CASED COIL CONNECTION
BRACKET FOR DOWNFLOW
FURNACE IN HORIZONTAL

The cased coil is secured to the furnace and both the furnace
and the cased coil must be properly supported.
The brackets
mount using the rear screws on the coil case and use the
screws provided to secure the bracket to the furnace. The
remaining bracket is placed as close to center as possible
(horizontally)
between the coil case front and the furnace
bottom channel (for downflow/horizontal
furnace). Use four of
the screws provided to secure the bracket. The upflow furnace,
converted to horizontal, aligns and attaches the TXC coil as in
Figure 1. However, the coil requires additional support.
The furnace may be installed in an attic or crawl space in the
horizontal position by placing the furnace on the left side (as
viewed from the front in the vertical position). The horizontal
furnace installation
in an attic should be on a service platform large enough to allow for proper clearances on all sides
and service access to the front of the furnace (See Figure 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.

@
UPFLOW/

HORIZONTAL I
SHOWN WITH
DIRECT VENT
18-CD19D8-15

Installer's
Furnace locations may be in a "confined
"unconfined
space".

[-50 CU. FT. OR MORE

..... \

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 panels.

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 B 149.1 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.

18-CD19D8-15

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 9 or from the
outdoors, as in Figure 10.

air

MINIMUM AREA IN SQUARE FEET
FOR UNCONFINED SPACE 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

AND VENTILATION

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

space"

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.

UNCONFINED

AIR FOR COMBUSTION

Guide

CONFINED
SPACE

FURNAOF

-I

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

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 making 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.
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

Air
From
Inside
lOO
lOO
lOO
12o

Air From Outside
Vertical
Duct

Horizontal
Duct

15
20
25
30

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

iiiiiiiiiiii

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 instMled,
amplify the slightest vibration to the annoyance level.

®
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

CONFINED SPACE

When the furnace is installed so that
air circulated by the furnace to areas
containing the furnace, the return air
by a duct(s) sealed to the furnace and
the space containing the furnace.

AIR FROM VENTILATED ATTIC/CRAWL SPACE
_

ATTIC

LOUVERS

DOORS

AIR

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.
Do Not install
cabinet.

,UTLET
CONFINED

INLET
AIR DUCT

the supply ducts carry
outside the space
shall also be handled
terminating
outside

return

air through

the back of the furnace

Do Not install return air through
cabinet on horizontal applications.

the side of the furnace

NOTE:
Minimum return air temperature is 55 ° F.
All return air duct systems should provide
return air filters.
1. Set the furnace in place.

CONFINED

SPACE

AIR FROM VENTILATED

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

ATTIC
:LOUVERS
TO OUTDOORS

CONFINEDSPACE

INLET
AIR DUCT

for installation

3. The side panels of the
notches that are used
for return air, refer to
drawing on page 4 for
various furnaces.

upflow furnace include locating
as guides for cutting an opening
Figure 11 and the outline
duct connection
dimensions
for

18-CD19D8-15

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

NOTE:
On upflow 5 ton airflow models, if the airflow requirement
exceeds 1800 CFM, these models will require return air
openings and filters on both sides; OR 1 side and the
bottom; OR just the bottom.
The upflow furnace blower door has a hinge at the bottom
which allows the door to tilt forward for filter replacement
without the door being removed (See Figure 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
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

(NOT SUPPLIED)

TYPICAL UPFLOW RETURN AIR FILTER
INSTALLATIONS
Filters are not factory supplied for these furnaces.
furnaces require high velocity type air filters. The
be located within the furnace blower compartment
UPFLOW furnaces in either a BOTTOM or SIDE
right side) return air inlet. Some filters may need
trimmed for side or bottom filter use.

These
filters may
for
(left side or
to be

TABLE 3
MODELS
NUMBERS

CABINET
WIDTH

*UX2B060A9362A
*UX2B080A9422A
*UX2C100A9482A

FILTER
QTY & SIZE

17-1/2"

*UX2D120A9602A

1- 17"X25"X

21"

1 - 20" X 25" X 1"

24-1/2"

1 - 24" X 25" X 1"

* 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.

UPFLOW

LOCATING

FURNACE

-,.

VIDED FOR SIDE
NOTCHESCUTOUT
PRORETURN

I/-

CUT OUT FOR
SIDE FILTER

"_ ,_
*SEE OUTLINE DRAWING _
18-CD19D8-15

FILTER
RACK
RAILS

4..

'_ SPRINGS

ONLY

Blower Door Hinge and Bottom Filter Rack Installation

I
RONT
of Furnace

AUTOMATIC
ADJUSTMENT

RETAINING
PIN
(Both Sides)

Optional Filter Rack Accessory Kit - BAYRACK960A
9

Installer's

Guide

",.: ..... ..

_
BlowerDeck

iiii

iiiiiiiiiiii

Engagement

•

Filter Rack

BOTTOM ENGAGEMENT
Retaining
Furnace
"
Screw/Pin

Filter
Rack

Cabinet

SideHole

Engagement
For Filter

Rack

Bottom Panel
ENGAGEMENT
!'"
.....

'_"

HOLE DETAIL
(Typical both sides
and blower deck)

BLOWER

OPTIONAL FILTER RACK INSTALLATION FOR SIDE RETURN AIR ON UPFLOW FURNACES (Left or Right)
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

_lnstallation
_)_Bottom Return
With

For Filter Rack
Installation With
Side Return

Cabi net .,.,,)_
Side

panel in place.

f. Reinstall the furnace
chamfer end first.

filter on the side inserting

Retaining
Screw/Pin

SIDE
CUTOUT

the

Filter

RETAINING
PIN

Rack
Assembly

Rack

(Bo_[__,

Filter Rack
Retaining
Screw/Pin

III
I I.]
[[I

EngagementHole
For Filter Rack
InstallationWith
Bottom Return

Furnace
Blower
Deck

Furnace

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

Furnace
Cabinet
Side

EngagementHole

J/
JJ
//

I[ V/zJ
L_z/Rack

FILTER
RACK

BOTTOM
PANEL

RAILS

INSTALLED

Typical Upflow Left Side Return Filter
Installation

Optional Filter Rack Accessory Kit - BAYRACK960A
10

18-CD19D8-15

Installer's

Guide

BLOWER DOOR/HINGE REMOVAL
If clearance or other problems create a problem in using the
tilting door, the blower door hinge may be removed without
creating any problems with the seal of the furnace. To remove
the blower door, tilt the door forward 2 to 3 inches and pull up.
To remove the tilt feature, simply remove the lower hinge as
shown in Figure 22. The bottom of the blower door will catch
in the bottom of the furnace front channel for door replacement.

Typical Upflow Right Side Return Filter Rack Installation

O
Door Hinge Removed
ALTERNATE UPFLOW FILTER CLIP / BRACKET
INSTALLATION (KIT09224)
1. Determine
the location to be used. The furnace cabinet
has dimples for location of the alternate
furnace clips
(Side return only). Pre-drill clearance holes with a 3/16"
drill. Bottom return holes are pre-drilled.
CHAMFER
END OF
FILTER
INTO
RACK

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.

GOES
FILTER
FIRST

RETURN AIR FILTERS FOR UPFLOW FURNACE IN
HORIZONTAL CONFIGURATION
When the Upflow Furnace is installed in the horizontal
configuration,
the return air filters must be installed exterior
to the cabinet. Remote filter grilles may be used for homeowner convenience or the filters may be installed in the duct
work upstream
of the furnace.
See Figure 21.

ALTERNATE FILTER
CLIPS LOCATION

FILTER CLIP - KIT09224

TYPICAL RETURN AIR FILTER INSTALLATION
IN
UPFLOW MODEL IN HORIZONTAL
POSITION
18-CD19D8-15

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

MODELS
NUMBERS

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

17-1/2"

2 - 14" X 20" X 1"

*DX100R948

21"

2 - 16" X 20" X 1"

*DX120R960

24-1/2"

2 - 16" X 20" X 1"

*DX080R942

AIR

BOTTOM

SIDE

17-1/2"

DO NOT CUT

21"

DO NOT CUT

CUT ON LINE

24-1/2"

DO NOT CUT

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 24.
Tables 5 and 6 provide information
for installation
of the
filter retaining brackets shipped with downflow furnaces.

FILTER
QTY & SIZE

*DX060R936

UNIT
SIZE

iiiiiiiiiiii

CABINET
WIDTH

*First

letter

may be "A" or "T"
TABLE 5

LOCATING

FILTER RETAINER BRACKETS
DUCTWORK

CABINET
WIDTH

RETURN
DUCT
WIDTH

DIMENSION
"A ....

DIMENSION
B"

FILTER
BRACKET
LOCATION*

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

16-1/4"
19-3/4"
23-1/4"

15"
19-1/2"
22"

14"
14"
14"

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

* LOCATION
DIMENSION
SCREW
HOLES
FOR

IS
THE

FROM
END
BRACKET.

DUCT

AGAINST

THE

FURNACE

THE

Optional
BAYFLTR206
Door Kit

BOptiyFLnTRI06

Airflow
DOWNFLOW

ow% ow;

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-CD19D8-15

Installer's
I The following

warning complies

with State of California

law, Proposition

65.

Hazardous Gases!

Carbon monoxide, fire or smoke can cause
injury, death, and!or property damage.

serious bodily

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.

GENERAL
THIS FURNACE

VENTING

MUST BE VENTED

TO THE OUTDOORS.

THESE FURNACES ARE INDUCED DRAFT VENTED
AND MUST NOT BE CONNECTED
TO ANY VENT SERVING ANOTHER APPLIANCE. PLEASE NOTE THAT
THESE FURNACES
USE POSITIVE-PRESSURE
VENT
SYSTEMS.
Proper venting is essential to obtain maximum efficiency
from a condensing furnace. Proper installation
of the vent
system is necessary
to assure drainage
of the condensate
and prevent deterioration
of the vent system.
American Gas Association has certified the design of condensing furnaces for a minimum of 0" clearance from combustible materials
with a single wall plastic vent pipe.
The recommended
system is assembled from 2", 2-1/2", or 3"
plastic pipe and fittings (See Table 7, page 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.
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.

18-CD19D8-15

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.
1. Seal any unused

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.

Guide

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. 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.
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.
IMPORTANT:
These furnaces may be installed as Direct Vent (sealed combustion) or as Nondirect vent (single pipe). The furnaces are
shipped DIRECT VENT with sealed combustion.
For DIRECT VENT APPLICATION: The furnaces must be
vented to the exterior of the house and combustion air MUST
come through the inlet air pipe FROM OUTSIDE AIR. 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 on
next page).
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.

Installer's

Guide

NOTE:
BAYVENT200* accessories can be used for inlet and outlet
terminals when the pipes do not exit the structure together.
The following are EXAMPLES

ONLY:

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.

EX. 1 --

Attic

Example 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.

Vent

_(Soe

Note)

FurnaceL

Air

Inlet

Furnace

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.

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

Air_

Inlet_

PIPE JOINTS: All joints must be fastened and sealed to
prevent escape of combustion products into the building.

Vent

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.

(See Note)

EX. 3 --

Be sure to properly

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.

BONDING OF PVC
Commercially
available solvent cement for PVC must be
used to join PVC pipe fittings. Follow instructions
on container carefully.
Pipe and Fitting
PVC Primer
Procedure

support

-ASTM

these joints.

D1785, D2466,

and Solvent Cement
for Cementing

Joints

D2661, & D2665

- ASTM D2564
- RefASTM

D2855

1. Cut pipe square, remove ragged edges and burrs.
Chamfer end of pipe, then clean fitting socket and pipe
joint area of all dirt, grease, moisture or chips.

Vent

Air
Inlet
=_
14

Furnace

2. After checking pipe and socket for proper fit, wipe socket
and pipe with cleaner-primer.
Apply a liberal coat of
primer to inside surface of socket and outside of pipe.
DO NOT ALLOW PRIMER TO DRY BEFORE APPLYING CEMENT.
3. Apply a thin coat of cement evenly in the socket. Quickly
apply a heavy coat of cement to the pipe end and insert
pipe into fitting with a slight twisting movement until it
bottoms out.
18-CD19D8-15

Installer's
4. Hold the pipe in the fitting for 30 seconds to prevent
tapered socket from pushing the pipe out of the fitting.

Guide

NOTE:
Follow venting instructions carefully when using PVC
cemenL

5. Wipe all excess cement from the joint with a rag. Allow
15 minutes before handling. Cure time varies according
to fit, temperature
and humidity.

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

TABLE 7
PVC VENT FITTING MATERIAL These fittings are available from your Gas Furnace Distributors.

q
2-3/16"

1-518"

[
i_

_-----

4-1/2"

WALL MOUNT

FLANGE

5-5/8"

WALL MOUNT

BAY69X 148

FLANGE

BAY69X 147
PLASTIC

PIPE DESIGNATIONS
PVC

ASTM STANDARD
F891
D2665
D1785
D2241

PIPE TYPE
CELLULAR
DWV

ALLOWABLE TEMPERATURE

CORE

"158

PIPE

SCH 40, 80, 120
SDR

SERIES

MARKING
ASTM

F891

*'158

ASTM

D2665

*'158

ASTM

D1785

*'158

ASTM

D2241

CPVC
ASTM STANDARD
D2846
F441
F442

PIPE TYPE
CPVC
SCH
SDR

ALLOWABLE TEMPERATURE

*'212

MARKING
ASTM

D2846

40, 80

*'212

ASTM

F441

SERIES

*'212

ASTM

F442

ABS
ASTM STANDARD

PIPE TYPE

ALLOWABLE TEMPERATURE

D2661

SCH 40 DWV

**'180

F628

SCH 40 DWV

CELLULAR

CORE

MARKING
ASTM

**'180

D2661

ASTM

F628

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

Connection
should just
air joint be
be separated
pipes must
length.

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.
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.
18-CD19D8-15

Front of Furnace

Seal INLET AIR PIPE
with RTV sealant

Installer's

Guide
VENT

ALTITUDE
0-7,000

TABLE

MAXIMUM TOTAL EQUIVALENT
FOR VENT AND INLET AIR

Feet

LENGTH IN FEET
(SEE NOTES)

2 INCH PIPE

2.5 INCH PIPE

3 or 4 INCH PIPE

UX2/DX2B060A9362A

200

UX2/DX2B080A9422A

120

200

UX2/DX2C100A9482A

Not Allowed

200

UX2/DX2D120A9602A

Not Allowed

200

2 INCH PIPE

2.5 INCH PIPE

3 or 4 INCH PIPE

UX2/DX2B060A9362A

100

UX2/DX2B080A9422A

100

UX2/DX2C100A9482A

Not Allowed

100

UX2/DX2D120A9602A

Not Allowed

100

7,000-9,500

iiiiiiiiiiii

LENGTH

9,500-12,000

Feet

2 INCH PIPE

2.5 INCH PIPE

3 or 4 INCH PIPE

UX2/DX2B060A9362A

Feet

UX2/DX2B080A9422A

Not Allowed

UX2/DX2C100A9482A

Not Allowed

UX2/DX2D120A9602A

Not Allowed

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 BAYAIR30AVENTA termination kit is
used, the equivalent length of pipe is 5 feet. BAYVENT200B
6. Pipe adapters are field supplied (except 120).

equivalent

length is 0 feet.

HORIZONTAL INSTALLATION
(Upflow/Horizontal
or Downflow/Horizontal)

2" _'

COUPLING

NOTE:
In horizontal
venting when the factory supplied "off-set"
(2)(3
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
followinomodels:
UC120 & DC120.
UX120 & UY120
UXIO0 _ UYIO0,
UX808C960,
and all DX & DY models.

FACTORY SUPPLIED
ONLY WITH
THE FOLLOWING
MODELS:
UC120 & DC120
UX120 & UY120
UX100 & UY100
UX080C960
ALL DX & DY MODLES

LABEL
SAYS
\\\\\

"TOP"

VENT
OUTLET

18-CD19D8-15

Installer's

Guide

ELBOW AND TEE MUST BE
AS CLOSE TOGETHER
AS POSSIBLE

iiiiliiiiii;iiii¸

POSSIBLE CONFIGURATIONS FOR TWO PIPE VENTING SYSTEMS

NOTE:

VENT A ND INL ET MUS T BE SUPPOR TED
A T A MAXIMUM OF 3' INTER VALS

SEE VENTING TABLE

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

COMBUSTION
AIR

USE ONLY
APPROVED
TERMINATION

STRAP
(FIELDSUPPLIED)
RAIN CAI

--)

COMBUSTION
AIR INLET

UPWARD

VENT

PITCH -- 1/4" PER FOOT

FIRST SUPPORT SHOULD BE AS
CLOSE TO FURNACE CONNECTION
AS POSSIBLE.

L
OUTSIDE
WALL

1"_+1/2"

ELBOW
COMBUSTION

40" UPFLOW
DOWNFLOW

OR
MODELS

NOTE:ANY
THROUGH
MUST

FITTINGS
PASSING
AN UNHEATED
SPACE

BEINSULATED.

AIR

(FIELD
SUPPLIED)

BA YAIR3OAVENTA

45° ELBOW

OUTSIDE
WALL

STUB CUT AT
45 ° ANGLE

18-CD19D8-15

Installer's

Guide

COUPLING
_'_
STU r

( PLASTIC

•

PVC WALL
MOUNT FLANGE

APPROVED
TERMINATION

12"MINIMUM
TO OVERHANG

//
VENT
CAP

NORMALLY

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

BAYVENT200B

1" CLEARANCE
(AIR SPACE )

EXPECTED

SNOW ACCUMULATION

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

PVC WALL
MOUNT FLANGE

COUPLING
( PLASTIC
VENTING )

/
61N. MIN.

I_--

j lj(TOJOINT)_

M_
BAYAIR30AVENTA
(Sidewall)

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

must be located at least 12"
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 39 for either direct or nondirect
vent applications.
PITCH -- Venting through the wall must maintain
1/4" per
foot pitched upward to insure that condensate
drains back to
the furnace.

IOPTIONAL)
APPROVED

TERMINATION

12" MIN. ABOVE
NORMALLY EXPECTED
SNOW ACCUMULATION

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

WALLS

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.
COMBUSTIBLE MATERIAL WALL
A minimum clearance of 1" to combustible materials
must be
maintained
when using single wall stainless steel venting.
See Figure 31.
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.
NONCOMBUSTIBLE MATERIAL WALL
The hole through the wall must be large enough to maintain
pitch of vent and properly seal.
Use cement mortar seal on inside and outside of wall. See
Figure 32.

FLUE GAS DEGRADATION
-- The moisture content of
the flue gas may have a detrimental
effect on some building
18

18-CD19D8-15

Installer's

Guide

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

_-I

PITCH - t $4" PER FOOT

40" UPFLOVV OR.DO".rv_FLOW FURNACE

HORIZONTAL AND VERTICAL

VERTICAL

REMOVE RIBS
FROM

VENT

9" MIN.
VENT"_

_
12' :t I"_

DISTANCE FROM TOP
OF VENT TO BO1TOM
OF AIR INLET MUST

MAINTAINED
12-INCH CLEAr4ANCE
ABOVE HIGHEST
MUST BE
AN_C!PATED SNOW LEVEL
MAXIMUM NOT TO EXCEED
24 INCHES ABOVE ROOF,
MAINTAIN
12 IN.
(18 IN. FOR CANADA)

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

COMBUSTION
AIR
INLET

MAINTAIN

VENT
REMOVE
RIBS
FROM CAP

COMBUSTION

_
AIR

ROOF
(FIELD

12 IN.

(18 IN. FOR CANADA)
MINIMUM
CLEARANCE

SEAL

BETWEEN

FLANGE,

PIPE,

COUPLING
AND METAL PANEL
WITH HI TEMP RTV SILICONE
SEALANT

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

PIPE
COUPLING

BOOT

SUPPLIED)

suP

SUPPORT
FLANGE

(FIELD SUPPLIED)

ELBOW
(FIELD SUPPLIED)

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

COMBUSTION
AIR

BAYAIR30AVENTA
18-CD19D8-15

(VERTICAL)

(12" x 12" PANEL

OR 12" DIA MIN.)

CLEARANCE
( 1 " ACCEPTABLE

(0"
FOR

ACCEPTABLE
TYPE
29-4C

FOR PVC VENT
STAINLESS
STEEL

PIPE)
VENT

PIPE

)

VENTING THROUGH CEILING
19

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)

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

COUPLING

FLANGE
GALVANIZED

NOTE:
No vent cap as shown in Figure 34 is the preferred method
for vertical vent termination in extremely cold climates.

FLOOR

PANEL (FIRESTOP)

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.
These fittings
locally.

and fitting

accessories

FLUE PIPE

CLEARANCE
(0"ACCEPTABLE
FOR PVC VENT PIPE)
(1"ACCEPTABLE
FOR TYPE29-4C STAINLESS STEELVENT

are to be supplied

PIPE)

DIRECTION OF STAINLESS STEEL FITTING

All stainless
steelfittingmustbeinstalled
withmaleend
towards the furnace.
................................................................................
All horizontal
stainless steel sections
with the seam on top.
All long horizontal
sagging.
All pipe joints
of combustion

sections

must be positioned

must be supported

must be fastened and sealed
products into the building.

to prevent

escape

TYPE 29-4C STAINLESS STEEL VENTING USED THROUGH CHIMNEY THAT VENTS
ANOTHER GAS APPLIANCE
STAINLESS STEEL
VENT CAP
(OPTIONAL)
SEE CAUTION

6 IN. MIN.

PVC PLASTIC VENTING - ONLY
THROUGH UNUSED CHIMNEY
STAINLESS STEEL
VENT CAP

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

6 IN. MIN.
FLUE PIPE

COUPLING
TO SUPPORT
PIPE FROM ANGLES
OR OTHER SUITABLE
SUPPORT
METHOD

SUPPORT
THE SINGLE
WALL FLUE PIPE AND
CENTER IT IN THE
CHIMNEY
OPENING
WITH
ANGLES AS SHOWN OR
ANOTHER
EQUIVALENT
MANNER.
COUPLING
AS REQUIRED

NOTE:
HORIZONTALVENTING
TO VERTICAL VENTING

FLUE PIPE

NOTE:
HORIZONTALVENTING
TO VERTICALVENTING

Do not run vent through chimney for wood burning or oil
furnaces or incinerators.

Do not run vent through chimney for wood burning or
oil furnaces or incinerators or any other gas appliance.

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.

VENTING ROUTED THROUGH A MASONRY CHIMNEY

18-CD19D8-15

Installer's

HORIZONTAL

Guide

VENT CLEARANCES

INSIDE
CORNER

FV']

VENTTERMINAL

(_) AIR SUPPLY INLET

[]

DETAIL

AREAWHERE

Non-Direct

Vent Terminal
Canadian

Clearance
balcony

above

grade,

Clearance

to window

veranda,

porch,

deck,

Clearance
Vertical

to permanently
clearance

closed

to ventilated

the terminal

Clearance

within

to unventilated

Clearance

to outside

Clearance

to inside

Clearance

to each

above

may be opened

located

distance

line of the

to service

of center

Clearance
to nonmechanical
building
or the combustion

Clearance

under

36 inches

> 100,000

(91 cm) for appliances

Btuh
Btuh
Btuh

(3 kw),
(3 kw)

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

(30 kw)

above

of 2 feet

terminal

line extended

3 feet (91 cm) with

regulator

vent

outlet

air supply

a paved sidewalk
on public property
veranda,

15 feet (4.5

porch,

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

inlet

the

=/< 10,000 Btuh (3 kw),
> 10,000 Btuh (3 kw)
> 100,000

Btuh

4 feet

7 feet (2.13

or balcony

12 inches

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

(30 kw)

6 feet (1.83m)

or paved
deck,

m) above

assembly

3 feet (91 cm)

air supply inlet to
air inlet to any other

to a mechanical

a height

meter/regulator

appliance

above
located

> 10,000

assembly

Clearance
driveway

=/< 10,000

(30 cm)

corner
side

Clearance

(15 cm) for appliances

12 inches (30 cm) for appliances
and =/< 100,000
Btuh (30 kw),

12 inches

soffit

Clearance

(30 cm)

corner

meter/regulator

US Installations

window

soffit

a horizontal

(61 cm) from the center

Clearances
Installations

12 inches

or door that

IS NOT PERMITTED

6 inches

TERMINAL

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

m) 1

7 feet

(2.13

(30 cm)

Notes:
1.
2.

In accordance
In accordance

with
with

the
the

1.
:l:.

A vent shall not terminate
Pemitted
only if veranda,

directly above a sidewalk
or paved driveway
that is located between
two single family
porch, deck, or balcony
is fully open on a minimum
of two sides beneath
the floor.

Clearance

with

in accordance

18-CD19D8-15

current
current

CSA B149.1 Natural
ANSI Z223.1/NFPA

local installation

codes

Gas and Propane
Installation
54 National
Fuel Gas Code.

and the

requirements

of the

Code.

gas supplier

dwelling

and the manufacturer's

and serves
Installation

both

dwellings.

Instructions.

iiiiiiiiiiiii

Installer's

Guide
Direct

Vent Terminal

Canadian
Clearance
above
deck, or balcony

grade,

veranda,

Clearance
opened

12 inches

to window

Clearance
Vertical
located

Installations

or door that may be

to permanently

closed

US Installations

porch,

6 inches
B=

Clearances

(30 cm)

(15 cm) for appliances

12 inches

=/< 10,000

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

> 10,000

Btuh (3 kw),
Btuh

> 100,000

Btuh

6 inches

(3 kw)
(30 kw)

(30 cm)

(15 cm) for appliances

=/< 10,000

Btuh

(3 kw),

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

> 10,000

6 inches (15 cm) for appliances
9 inches (23 cm) for appliances
and =/< 50,000 Btuh (15 kw),

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

> 50,000

Btuh (3 kw)
Btuh

(15 kw)

window

clearance
to ventilated
soffit
above the terminal
within a

horizontal
distance
of 2 feet (61 cm)
from the center line of the terminal
E=

Clearance

to unventilated

Clearance

to outside

Clearance

to inside

Clearance
extended

Clearance

to service

Clearance

to nonmechanical

corner
corner

to each side of center line
above meter/regulator
assembly

inlet to building

iiiiiiiiiiii

soffit

inlet to any other

regulator

or the

vent outlet
air supply

combustion

appliance

36 inches

Clearance

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

to a mechanical

under

3 feet

air supply

veranda,

porch,

15 feet (4.5
assembly

the

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

(91 cm) for appliances

inlet

m) above

(91 cm)

6 inches (15 cm) for appliances
12 inches (30 cm) for appliances
and =/< 100,000 Btuh (30 kw),

air

3 feet (91 cm) with a height
meter/regulator

> 100,000

Btuh

(30 kw)

12 inches

6 feet (1.83m)

7 feet

deck,

(30 cm) for appliances

3 feet (91 cm) above

if within

> 50,000

Btuh

(15 kw)

10 feet (3m) horizontally

(2.13 m) l-

12 inches

(30 cm) :l:

Notes:
1.
2.

In accordance
In accordance

1-.

A vent

:l:.
*

Pemitted
Clearance

with
with

the current
the current

shall not terminate
only if veranda,
in accordance

DOWNWARD

directly

CSA B149.1 Natural
ANSI Z223.1/NFPA
above

a sidewalk

Gas and Propane
Installation
54 National
Fuel Gas Code.
or paved

driveway

Code.

that is located

between

two single

family

dwelling

porch, deck, or balcony
is fully open on a minimum
of two sides beneath
the floor.
with local installation
codes and the requirements
of the gas supplier and the manufacturer's

and serves
Installation

both

dwellings.

Instructions.

VENTING
f

Furnace may be in vertical or horizontal configurat_

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

EQUIVALENT FEET.

40 Inch

SEE
NOTES
Slope 1/4" per ft.

DOWNWARD VENT LENGTH IS
LIMITED TO A MAXIMUM OF 15

Upflow or
Downflow
Furnace

II
J

Slope 1/4" per ft.
NOTES:

6" Min.
.._!._

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.
22

18-CD19D8-15

Installer's
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
on each additional
level of the dwelling, building or
structure
served by the side wall horizontal
vented gas
fueled equipment.
It shall be the responsibility
of the
property owner to secure the services of qualified licensed
professionals
for the installation
of hard wired carbon
monoxide detectors
a.
In the event that the side wall horizontally
vented
gas fueled equipment
is installed
in a crawl space or an
attic, the hard wired carbon monoxide detector with alarm
and battery back-up may be installed
on the next adjacent
floor level.

Guide

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

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

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-CD19D8-15

Installer's
CONDENSATE

Guide
DRAIN INSTRUCTIONS
IV!_ [q:la//[e]

VERTICAL

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

APPLICATIONS

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.

Left side

Right side

UPFLOW (VERTICAL)

Use

extension
hose here

Use Inducer Drain
hose without
extension

UPFLOW HORIZONTAL 17" UNITS
(Left side only)
24

UPFLOW HORIZONTAL 21" & 24" UNITS
(Left side only)
18-CD19D8-15

Installer's
HORIZONTAL

Guide

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
the secondary recuperative
cell. Remove the larger &'ain 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.
Cut off curved end of
Inducer drain hose

DOWNFLOW (HORIZONTAL)
Remove the hose from the induced blower and reposition into
the other &'ain tap of the inducer, which is located 90 °
clockwise around the inducer. Move the cap from that &'ain
tap to the unused drain tap. On upflow units, plug the hole in
the blower deck where the tube went through.
This tube on
downflow units will need to be cut to fit between the inducer
and the trap. On upflow units, this tube may need to be
extended, using the tubing shipped with the furnace.
Connections must be made to an OPEN/VENTED
DRAIN.
Outdoor draining of the furnace and coil condensate is
permissible
if allowed by local codes. Caution should be taken
to prevent drains from freezing or causing slippery conditions
that could lead to personal injury. Excessive draining of
condensate may cause saturated
ground conditions that may
result in damage to plants.

DOWNFLOW

NOTE:
Use 1/2" or larger PVC or CPVC pipe and fittings as required
for drain connections (fittings, pipe and solvent cement not
provided).

(VERTICAL)

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.
Right
side

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

DOWN FLOW (VERTICAL)
18-CD19D8-15

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.
25

Installer's

Guide

FIELD WIRING

DIAGRAM FOR 2 STAGE FURNACE
1 STAGE HEATING

USING A 1 STAGE HEATING THERMOSTAT
NO COOLING
2 STAGE
FURNACE

T"STAT

NOTES:

SEE
NOTE 7
L

I
2
3

[]

[]
[]
If upflow
over
from
stack
drain
the

furnace

must
pan to

finished

flow

[]

is installed

a finished
ceiling,
the primary
drain
into

prevent
ceiling

SEE
NOTE 8

6
7

[]

8
9

_]-_

overflow
vent

BE SURE POWER AGREES WITH EOglPMENT
NAMPLATE(S)
LOW VOLTAGE
(24V
AIRING)
TO BE NO
18 AW
G
MIN
GROUNDING OF EQUIPMENT MUST COMPLY WITH LOCAL CODES
SET THERMOSTAT
HE_T ,,yS
¢_TI_IPATOR
AIRING OF
DIAGR&M
THESE
LEADS PNOVIDE
'
ROWERPER
FOR UNIT
CO_'iMECTION
ELECTRONIC
CLEANER
AND HUMIDIFIER
MAX
LOAD I0 AMPS EACH
THIS CONNECTION IS ONLY USED FOR THERMOSTATS REOUIRIMG
CONNECTION TO THE 24 V
POWER SUPPLY
(COMMAN)
SEE TWINNING CONNEDTION
DIAGRAMS FOR PROPER CONNECTIONS
WHEX USING THIS FEATURE
WHEN A HEATING
THERMOSTAT
(WITHOUT FAN SWITCH)
IS USED,
NO WIRING ON "G" TERMINAL
OF IFD IS USED
AI _NI} A2 MilST BE JUM_ERED TOGETHER FOR _ROPER OPERATION
SECOND STAGE HEATING
AILL BEGIN
I0 MINUTES
AFTER
FIRST STAGE

AIR

,4
_FIELD

ADDED JUMPER
WlTOW2.

•\SCREW
GROU N D

an auxiliary
damage

[]

below,

1 TER

Primary drain vent stack
must terminate below

SEE
NOTE 6

COMPO[ENT

[]
,,MIRI

----

24 V.
"L FIELD
L ]NE v. _* M_'I_ [NG

24 V.
_ FA;T{
_Y
L ]NE /.#>" 'A,'IR [MG

{

secondary heat exchanger
condensate drain outlet,

To drain

opening

",,,
FIELD WIRING

DIAGRAM FOR 2 STAGE FURNACE
2 STAGE HEATING
USING A 2 STAGE HEATING THERMOSTAT
NO COOLING

2 STAGE

T'STAT

FURNACE
SEE
NOTE

Fq
Pq
Fq
@
Fq

E]
D
D
FS

CII,!f:C
24

ENT

V'.

----LINE

BE SURE POWER AGREES WITH EQUIPMENT NAMPLATE(S).
LOW VOLTAGE (24V,
WIRING)
TO BE NO, 18 A.W,G.
MIN.,
GROUNDING OF EQUIPMENT MUST COMPLY WITH LOCAL CODES.
SET THERMOSTAT HEAT ANTICIPATOR
PER UNIT WIRING DIAGRAM.
THESE LEADS PROVIDE 115 V. POWER FOR CONNECTION OF ELECTRONIC
CLEANER AND HUMIDIFIER
MAX, LOAD 1.0 AMPS EACH.
THIS CONNECTION IS ONLY USED FOR THERMOSTATS REQUIRING
CONNECTION TO THE 24 V. POWER SUPPLY
(COMMON)
SEE TWINNING CONNECTION DIAGRAMS FOR PROPER CONNECTIONS
WHEN USING THIS FEATURE,

-L
_

FIELD

LINE

'M'.

_,
',,'.

G
FACT

Ow, Y

'_'11_
I O
_,
From

AIR

',A"IF_]N("

,/.j,/WIRI[
2

I
2
3
4
5

SEE
NOTE 6

D
INTER

NOTES'

-D

Dwg. 21B342024

Rev. 0

18-CD19D8-15

Installer's

Guide

FIELD WIRING DIAGRAM FOR 2 STAGE FURNACE
2 STAGE HEATING, 1 STAGE COOLING
USING A 2 STAGE HEATING, 1 STAGE COOLING THERMOSTAT
(OUTDOOR SECTION WITHOUT TRANSFORMER)
2 STAGE
FURNACE

T'STAT

SEE
NOTE 7

OUTDOOR

UNIT

t-q

D
Fq

(NO TRANSFORMER)

NOTES:

SEE

I.
2.
3.
4.
5.
6.

NOTE 8

t--q

BE SURE POWERAGREES WITH EQUIPMENT NAMPLATE(S)
LOW VOLTAGE (24V. WIRING) TO BE NO. 18 A.W.G. MIN..
GRO DIG OF EQ IPMENT MUST COMPLY WITH LOCAL CODES
SET THERMOSTATHEAT ANTICIPATOR PER U IT WIRING DIAGRAM
THESE LEADS PROVIDE 115 V. POWERFOR CON ECTION OF ELECTRONIC AIR
CLEA ER AND HUMIDIFIER MAX. LOAD 1.0 AMPS EACH.
THIS CONNECTION IS ONLY USED FOR THENMOSTATS REQUIRING
CONNECTION TO THE 24 V. POWERSUPPLY. (COMMO)
SEE TWINNING CO NECTION DIAGRAMS FOR PROPER CONNECTIONS
WHE USING THIS FEATURE
THE "Y" TERMINI AL FROM THE THERMOSTAT M ST BE WIRED
TO THE "Y" TERMINAL OF THE FURNACECO TROL FOR PROPER BLOWER
OPERATION DUAl G COOLING.

D
SEE
NOTE 6

TO 115Vl

INTE:_

COM:_ONENT
24

WIRING

----LINE

PH.,

60 HZ.,POWER
SUPPLY
PER
LOCALCODES

i
i

HUM SEE
NOTE5

FIELD

Y._

WIR

ING
WH

--LINE

FACTORY

Y._

EAC SEE
NOTE5

WIRIN(

From Dwg. B342021

Rev. 0

FIELD WIRING DIAGRAM FOR 2 STAGE FURNACE
2 STAGE HEATING, 1 STAGE COOLING
USING A 1 STAGE HEATING, 1 STAGE COOLING THERMOSTAT
(OUTDOOR SECTION WITHOUT TRANSFORMER)
2 STAGE
FURNACE

T'STAT
SEE
NOTE 7

L
OUTDOOR

NOTES:
I.
2.
3.
4.
5.

-B

UNIT

(NO TRANSFORMER)

......
__

---D

SEE

.N_O_T_E_S_
--D

E_---

--D

E_---

--[_.

BE SURE POWERAGREES WITH EQUIPMENT NAMPLATE(S).
LOW VOLTAGE (24V. WIRING) TO BE NO. 18 A.W.G. MIN..
GROUNDING OF EQUIPMENT MUST COMPLY WITH LOCAL CODES.
SET THERMOSTAT HEAT ANTICIPATOR PER UNIT WIRING DIAGRAM.
THESE LEADS PROVIDE 115 V. POWER FOR CONNECTION OF ELECTRONIC AIR
CLEANER AND HUMIDIFIER MAX. LOAD I.O AMPS EACH.
THIS CONNECTION IS ONLY USED FOR THERMOSTATS REQUIRING
CONNECTION TO THE 24 V. POWERSUPPLY. (COMMON)
SEE TWINNING CONNECTION DIAGRAMS FOR PROPER CONNECTIONS
WHEN USING THIS FEATURE,
THE "Y" TERMININAL FROM THE THERMOSTAT MUST BE WIRED
TO THE "Y" TERMINAL OF THE FURNACE CONTROL FOR PROPER BLOWER
OPERATION DURING COOLING.
Wl AND W2 MUST BE JUMPERED TOGETHER FOR PROPER OPERATION.
SECOND STAGE HEATING WILL BEGIN I0 MINUTES AFTER FIRST STAGE.

'T GROUND
\ SCREW

FIELD ADDED

_--_f,-

JUMPER (NOTE 9)

,I I

..................
F U R N AC E
iK!

JUNCTION

SEE
__

['-LH
TO115V1 PH,, I ....

- [_1
i

HZ.,

POWER

B,< L_]_]_
"_'_'
I _
I I'm

SUPPLYPER

LOCAL
COOES
| ,N
INTER

COMPONENT

HUM SEE J -......

----LINE

18-CD19D8-15

FIELD

NOTE__

,,_11

BOX

11
I

V.TW]RING
24

--LINE

._______£_

rwH/I --

WIRING

I
WH/II

"'_
V._y

FACTORY
WIRING

EAC SEE
NOTE 5

, B_<

I ,,

From Dwg. B342019 Rev. 0

Installer's

Guide
TWINNING

CONNECTION

FOR TWINNING
1 STAGE
OUTDOOR

UNIT NO. 1

(WITH TRANSFORMER)
SEE NOTE 3

DIAGRAM

UX/DX-R

HEAT / 1 STAGE

FURNACES

COOLING

THERMOSTAT
NOTES

1 STAGE
HEATING / COOLING
THERMOSTAT

FURNACE

NO. 1

FURNACE

NO.

_OTN FURNACESMUST 3_ ROWERE_FRON
THE SANE _lGV
LEG OF D_RCNIT PANEL¸

SLOWEn OPERATION OF
UNIT NO 2 IS SYNCRONIZED
WITH UNIT NO I VIA SIGNALS
FROM TWIN CONNECTION

_NSURE
IN

24V

FURNACE

PHASE

PRIOR

CHECK
VOITAGE
EACH
FURNACE
/OV,

:Ul

[ @@-(_

REVERSE

ONE

IF
AN

OUTDOOR
iSOIATION

(FIELD

(F_ELO SUPPUEO>
A_ERNaTE
CONNECTION

CURRENT

NOTE

OUTDOOR
UNIT NO. 1
(NO TRANSFORMER)

ON BOTH

DUT_
SEE

CONNECTION

CURRENT

RELAYS
_

RELAY

ALT

THERMOSTAT

CONNECT

MAY

LEADS

TRANSFORNER,
/NSTA!L[D

PILOT

ISOLATION
NOT

OF
THAN

SECONDARY

_'Ri')

TO #)
IF THE THERNOSTAT
OR A_OV_

R_OUIRED

FOR ELECTRONIC

THERMOSTATS
.....

l
l

UNITS.

2ND STAGE WILL FIRE
10 MINUTES
AFTER 1 ST

RELAY
NOT NEEDED
AR_ RATED AT
I OA

CONNECTION

ARE

CONNECTIONS,

TRANSFORNERS

RLFORZ5)

EXCEEDS

_DO

_SOLATION
CONTACTS

USE

US_

SRO_N
SEE

FURNACE

UNIT
HAS A RAY
R{!AY
MUST
B_

SUCH

RATING,

THE

SUPPLIED

{'NC'),

TRANSFORMERS

TO COMPLETING

BET_EN
"R"
TERMINAIS
1{ VOLTAGE
fS GREATER

i
i

I[ TER

,.J

CO_,IPONENT

.........

F-_-I

V'.

h
24

V.
L INE

EONF 16URATION

'_ FIELD
/uiv'v'IS Y'i]R'ING

ISOLATION RELAy
SEE NOTE 4

,{]fffffffffffffff

I
i

I
r

SEE

NOTE

From

ISOLATION RELAY

Dwg.

21B341336

Rev. 2

{HELD SUPPLIED}
SEE NOTE 4

:1 i
i

•
•

TWINNING
CONNECTION
DIAGRAM
FOR TWINNING
UX/DX-R FURNACES
2 STAGE HEAT/1 STAGE COOLING THERMOSTAT
OUTDOOR

UNIT NO. 1

(WITH TRANSFORMER)
SEE NOTE 3

2 STAGE HEATING
1 STAGE COOLING
THERMOSTAT

I
FURNACE

NO.

BLOWER OPERATION OF
UNIT NO 2 iS SYNCRONIZED
WITH UMT NO 1 ViA SIGNA£5
FROM _IN CONNECTION

_OTN EURNAC[S
THE SAME HSV

INSUR_

24V

RUST
I£D

B[ POWERED
O# CIRCUIT

FURNAC_

#RON
PANEl

TRANSFORMERS

AN_

IN PHASE
PRIOR TO COMPLETING
CONNECTIONS,
CHECK VOLTAGE
BETNEEN
"R"
TERMINALS
OF
EACH _URNACE
/_ VOLTAGE
IS GREATER
THAN
JOY,
REVERSE
ON ON# 0#
THE

(FIELR

SUPPLIEO

('RE'),
4

THE _L AN RD SECONDARY
#URNAC[
TRANSfORMeRS

USE

SUCH AS

CURRENT

RATING,

USE

PILOT

RLYORYR

EXCEEDS

)

DUTY
SEE

ISOLATION

RELAYS

REIAY

ALT

TNERNOGTAT

ISaAT_ON

s?sj;?R

RELAY

(F_ELD SUPPUEO)
SEE NOTE 4
r

......

CONTACTS

ARE

RATED

IRA

CONNECTION

CURRENT
{'RI')

SNO_N
(DO NOT CONNECT _ TO _)
ISOIATION
REIAY
NOT NEEDED
_F THE

OUTDOOR UNIT NO. 1
(NO TRANSFORMER)

LEADS

iF
OUTDOOR UNIT
HAS A RAY
TRANSFORM[R,
AN ISOLATION
RELAF
MUST BE _NSTALLED

THERMOSTAT

OR ABOVE

CONNECTION
MAY DE REQUIRED
THE RNOS TATS

FOR ELECTRONIC

RI; L ;
F

INTER

CO,,PC

ENT

ATERRATE

2 4 ,/.
I

--L--

;
--

LINE

",/V]RINO
CORF_G_RATION

SEE NOTE 4

.........

R2; _1

_INlflG

24
LI[

h> F ]E k D
,/.J

'/.
E

',/'filING

_ FACTO_{Y
._,/VIZ{IN("

I
I
I

From Dwg

21B341337

Rev, 2

i:
•
•

"I
i

18-CD19D8-15

Installer's
TWINNING

CONNECTION

Guide

DIAGRAM

FOR TWINNING
UX/DX-R
FURNACES
2 STAGE HEAT / 2 STAGE COOLING
THERMOSTAT
OUTDOOR

UNiT

NO. 2

_OTE;

2STAGEHEATING
1STAGECOOLING

(NO TRANSFORMER}
SEE NOTE 3

THERMOSTAT

FURNACE

NO. 1

FURNACE

NO.2

BLOWER
OPEraTION
Or
wl_ UNIT.Olvl_sle._Ls

°:ff_,22222
°

SOATO_

f
OUTDOOR

UNiT

#[iAr

'¢0T

sY"°W
4 ¸
;
m;
;

(NO TRANSFORMER)

RI; _

_,_

TU[

Trfl2_OSTRT

ISO_TI_ nE_¥

ISO_TION
RElY
(FIELD
SUPPLIED)

i_i

OUTDOOR UNIT
HITH TRANSFORMER
SEE NOTE 3

I
i

tO
a2l_;

R2;
i _; i i;

z0,

o'
ISO_TION

RElY

ACT_NAT_
CO.NECTION

I
I
I

SEE NOTE 5

INTER

CObIPONENT

IIL]NE
From

Dwg.

21 B341338

'FT[R]NG

AL T!PNAT_ #HUt¢O (O_[

_PAT

I, FIE L D
_'¢V[RINQ

Rev. 2

--LINE

'/.

;% "A'[
FA::T_ IN }RY
G

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

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

18-CD19D8-15

and unit wiring

Installer's

Guide

AUTOMATIC GAS VALVE
WITH MANUAL SHUT-OFF
MAIN MANUAL
SHUT-OFF VALVE
GROUND
UNION
JOINT

DRIP
LEG

AUTOMATIC GAS VALVE
WITH MANUAL SHUT-OFF

MAIN MANUAL m
SH UT-O FF VALVE

GROUND
UNION
JOINT

iii!iiiiii'i_iiiiliiliilii
._

DRIP _
LEG

UPFLOW MAY BE LEFT OR
RIGHT HAND GAS PIPING

THE DOWNFLOW (VERTICAL) MAY BE INSTALLED
LEFT OR RIGHT SIDE GAS PIPING

MAIN MANUAL

AUTOMATIC GAS VALVE
WITH MANUAL SHUT-OFF

VALVE
SHUT-OFF

MAIN MANUAL
SHUT-OFF VALVE

GROUND UNION JOINT
DRIP
LEG

AIR
FLOW

GRO_
UNION JOINT

AUTOMATIC GAS VALVE WITH
MANUAL SHUT-OFF

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

18-CD19D8-15

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
45.
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 8, for delivery sizes. Connect gas supply
to the unit, using a ground joint union and a manual shut-off
valve as shown in Figures 44 & 45. National codes require a
condensation
drip leg to be installed ahead of the controls as
shown in Figures 45 & 46.

Use a backup wrench on the gas valve when installing gas
piping to prevent damage to the gas valve and manifold
assembly.
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.
All gas fittings must be checked for leaks using a soapy
solution before lighting the furnace. DO NOT CHECK
WITH AN OPEN FLAME!

TABLE 8

Guide

NATURAL GAS ONLY

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

LENGTH OF PIPE

SIZE

1/2

132

3/4

278

190

152

130

115

105

520

350

285

245

215

195

180

1-1/4

1050

730

590

520

440

400

370

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

TABLE

9 ORIFICE

INPUT
RATING
BTUH

NUMBER
OF
BURNERS

60,000
80,000
100,000

3
4
5

120,000

SIZES

MAIN

BURNER ORIFICE
DRILL SIZE

NAT. GAS

LP GAS

45
45

56
56

45
45

56
56

COMBUSTION AND INPUT CHECK
(See also High Altitude Derate)
1. Make sure all gas appliances are off except the furnace.
2. Clock the gas meter with the furnace operating (determine the dial rating of the meter) for one revolution.
3. Match the "See" column in the gas flow (in cfh) Table 10
with the time clocked.
4. Read the "Flow" column
clocked.

opposite

the number

of seconds

5. Use the following factors if necessary:
For 1 Cu. Ft. Dial Gas Flow CFH =
Chart Flow Reading + 2
For 1/2 Cu Ft. Dial Gas Flow CFH =
Chart Flow Reading + 4
For 5 Cu. Ft. Dial Gas Flow CFH =
10X Chart Flow Reading + 4

CORRECT METHOD OF CHECKING DIRECT VENT MANIFOLD
PRESSURE WITH BURNER BOX REFERENCED
I
Separate the tube
at the unit Tee and

I
_'

reconnectwith a
short piece of field
supplied tube and
another Teewith
the "U" Manometer

,.-.
T

attached.

11
_

/¢_/

unit tubing to original
position after testing

pressu re!

---

_
_k_

\'\ _/

___.

Field supplied barb fitting
with manom eter tube is
attached to the"OUTLET
PRESSURE
TAP" on the
outlet

II
I]

/__

Be
sure
toreconneot I{

the manifold

II "_t
II
II

|
_IL
_

side of the gas valve,

A CAUTION: Beturn
a,tubing,
caps,
an, or
plugs
tooriginal
positions
when
pressure
checks
are completed.
18-CD19D8-15

Installer's

Guide

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.
7. Changes can be made by adjusting the manifold pressure
(See Table 11), 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 48 for White-Rodgers
gas valve model 36E and
Figure 49 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.
c. The other side of the manifold pressure gauge must be
referenced to the burner box as shown in Figure 46.
d. Turn on system power and energize valve.
e. For the White-Rodgers
gas valve model 36E:

GAS FLOW IN CUBIC FEET PER HOUR
2 CUBIC FOOT DIAL
SEC.
8
9
10
11

FLOW
900
800
720
655

SEC.
29
30
31
32

FLOW
248
240
232
225

SEC.
50
51
52
53

FLOW
144
141
138
136

SEC.
82
84
86
88

FLOW
88
86
84
82

12
13
14
15
16
17
18
19
20
21

600
555
514
480
450
424
400
379
360
343

33
34
35
36
37
38
39
40
41
42

218
212
206
200
195
189
185
180
176
172

54
55
56
57
58
59
60
62
64
66

133
131
129
126
124
122
120
116
112
109

90
92
94
96
98
100
104
108
112
116

80
78
76
75
73
72
69
67
64
62

22
23
24
25
26
27
28

327
313
300
288
277
267
257

43
44
45
46
47
48
49

167
164
160
157
153
150
147

68
70
72
74
76
78
80

106
103
100
97
95
92
90

120
124
128
132
136
140
144

60
58
56
54
53
51
50

TABLE 11

PRESSURE

SETTINGS (inches

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 48).

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 11 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.
f. For the White-Rodgers

seal screw and tighten
times to verify regulator

gas valve model 36G:

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.

1. Adjust low fire by removing the low adjustment
seal screw (See Figure 48).
TABLE 10

FINAL MANIFOLD

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 11.

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.

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).
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:
Reinstall the propane orifices to the same depth as the orifices
supplied with the equipment.
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
with the listed high Altitude Conversion
Kit
available with this furnace.

PART NUMBERS

TABLE 12
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

18-CD19D8-15

Installer's

Guide

See Table 13 forhelp in selectingorifices
iforificechange is
required. Fu_'nace input rate and temperature riseshould be
checked again afterchanging orifices
to confirm the proper rate
forthe altitude.
The vent length table on page 16 shows the required vent
lengths for installationsat various altitudes. An optional
high altitudeidt isavailable for installationsabove 5000 feet
Installationsabove 12,000 feet are not allowed).
TABLE 13

ROTATE THE FRONT
COVER AS SHOWN

Orifice
ALTITUDE ABOVE SEA LEVEL
Twist Drill
Size If
and Orifice Required At Other Elevations
Installed
At Sea
Level
2000 3000 400G 5000 6000 700G 8000 9000 10000
42
43
44
45
46
47

42
44
45
46
47
48

43
44
45
47
47
48

43
44
45
47
47
49

43
45
46
47
48
49

44
45
47
48
48
49

44
46
47
48
49
50

45
47
48
49
49
50

46
47
48
49
50
51

47
48
50
50
51
52

54
55
56
57
58

54
55
56
58
59

55
55
56
59
60

55
55
57
59
60

55
56
57
60
61

55
56
57
60
62

55
56
58
61
62

56
56
59
62
63

56
56
59
63
63

56
57
60
63
64

From N_ional Fuel Gas Code-Table
White-Rodgers

ALL SIDE FLANGES MUST
BE OUTSIDE OF THE BOX

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

F-4
4. Cycle the valve several
setting.

36E
2nd Stage (HI)
Manifold
Pressure
Adjustment
1st Stage (LO)
Manifold
Pressure
Adjustment

Gas Valve On / Off
Toggle Switch

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

5. Adjust high fire by removing the high adjustment
regulator cover screw (See Figure 49).
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 11 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.

White-Rodgers36G

2nd
Stage Adjustment
(HI) Manifold
Pressure

times to verify regulator

8. Cycle the valve several
setting.
g. Turn off all electrical

regulator

cover screw and

times to verify regulator

power to the system.

h. Remove the manometer
and flexible tubing. Remove
the barbed fitting and replace the plug or tighten the
pressure test screw.
i. Turn on electrical
valve.

power to the system and energize

j.Using a leakdetection
solution
or soap suds,check for
leaksatplugor pressurebossscrew.
Gas Valve On / Off
Toggle Switch

1st Stage (LO)
Manifold Pressure
Adjustment

1. Adjust low fire by removing the low adjustment
regulator cover screw (See Figure 49).
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 11.
3. Replace and tighten
securely.
18-CD19D8-15

the regulator

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 47.

cover screw

Installer's

Guide

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.

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 12 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 13.
REINSTALLATION OF THE BURNER BOX COVER
Figure 49 shows the correct way to reinstall the burner box
cover if adjustment
or replacement
of the flame sensor, hot
surface igniter, or main burner orifices have required removal of the cover.

START-UP

AND ADJUSTMENT

PRELIMINARY INSPECTIONS

are in place
is properly

assembled

4. Blower door is in place
Turn the main gas valve toggle switch (See Figures 48 & 49)
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 W1TH 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 toggle switch 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 Figure 44). 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.
SEQUENCE OF OPERATION
Thermostat call for heat (2-stage thermostat)
Call for 1st stage only:
Wl 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
burners.
The flame sensor confirms that ignition has been achieved
within the 4 second ignition trial period.
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 2nd 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 2nd stage
heating requirements
are satisfied.
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 close
and the induced draft blower will be de-energized.
The
indoor blower motor will continue to run for the fan off period
(Field selectable at 60, 100, 140 or 180 seconds), then will be
de-energized by the control module.
18-CD19D8-15

Installer's
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.

Guide

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).

CONTROL AND SAFETY SWITCH ADJUSTMENTS

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.

LIMIT SWITCH CHECK OUT
The limit switch is a safety device designed to close the gas
valve should the furnace become overheated.
Since proper
operation of this switch is important to the safety of the unit, it
must be checked
out on initial start up by the installer.

BURNER BOX TEMPERATURE LIMIT DEVICE
All models are equipped with a manual reset temperature
limit located on the burner box. In case of excessive temperature, the limit will open and cause the circuit to open which
shuts off all flow of gas.

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

iii
i!

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.
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.
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.
Wl-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).
Cooling: The fan delay off period is factory set at 0 seconds.
The option for 80 second delay off is field selectable by dip
switch SW-2, #3 (See wiring diagram).

18-CD19D8-15

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
i 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.
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.

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 offthe gas vNve and lock out the system.
5. INDUCED
DRAFT BLOWER FAILURE
Please refer to the variable speed draft inducer
troubleshooting
manual for diagnostic assistance.
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
ofcondensate 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 off for more than
1 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.

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.

18-CD19D8-15

Installer's

Guide

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
At any other time the control is powered, the
indicator light will operate as shown in Table
LED will flash LitePort data (one flash) every

fault recovery.
Green LED
14 and the red
20 seconds.

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.

Green Status LED

TABLE 14

INTEGRATED
GREEN

FURNACE

"STATUS"

CONTROL

LED FLASH

CODES

Flashing

Slow ---

Normal

- No call for Heat

Flashing

Fast ---

Normal

- Call for Heat

*UX / DX Integrated Furnace Control

INTEGRATED

FURNACE

CONTROL

RED LED "ERROR"

2 Flashes ---

System Lockout (Retries

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 --Solid Red w/Solid
Green "STATUS" LED

Internal GV error or Low TH voltage

18-CD19D8-15

Continuous

or Recycles

FLASH CODES

exceeded)

Limit Switch

Reset caused

ignitor (Triac) fault, poor grounding

by a blown fuse or internal error.

Trane
6200 Troup

03/08
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,
change design and specifications without notice.

it reserves the right to

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TRANE Furnace/Heater, Gas Manual L0902549

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