TRANE Furnace/Heater, Gas Manual L0702197

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 IIIIIIIII
18-

CD19D8-

10/30/06

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

IMPORTANT

must

comply

with

-- This Document

Please

return

NATIONAL,

is customer

to selwice information

STATE

property

AND LOCAL

CODES

and is to remain

pack upon completion

*UX2

with this unit.

of work.

*DX2

DOWNFLOW
A.'_
FLOW

AiR
FLOW

UPFLOW

UPFLOW / HORIZONTAL
FLOW
AiR

LEFT

OOWNFLOW,HOR,ZONTALR,GHT
_o%_

o
i

A341624P03

Installer's

Guide

SAFETY

SECTION

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

1. Use only with the type of gas approved for this furnace.
Refbr 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 13-22), 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 28), 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
temfinating
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 fbr 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 temperatm_
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 Massachusettes.

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.
© 2006 American Standard Inc. All Rights Reserved

CARBON MONOXIDE POISONING

HAZARD

Failure to follow the steps outlined below for each
appliance connected to the venting system being
placed into operation could result in carbon monoxide
poisoning or death.
The following steps shall be followed for each appliance
connected to the venting system being placed into
operation, while all other appliances connected to the
venting system are not in operation:
1. Seal any unused openings in the venting system.
2. Inspect the venting system for proper size and
horizontal pitch, as required in the National Fuel Gas
Code, ANSI Z223.1/NFPA 54 or the CAN/CGA B149
Installation Codes and these instructions. Determine
that there is no blockage or restriction, leakage,
corrosion and other deficiencies which could cause an
unsafe condition.
3.

As far as practical, close all building doors and
windows and all doors between the space in which the
appliance(s) connected to the venting system are
located and other deficiencies which could cause an
unsafe condition.

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.
8.

After it has been determined that each appliance
connected to the venting system properly vents where
tested as outlined above, return doors, windows,
exhaust fans, fireplace dampers and any other gas-fired
burning appliance to their previous conditions of use.

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 i_sult in death or serious injm%
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 inj ui%
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-CD19D8-14

Installer's
GENERAL
The manufacturer
assumes no responsibility
for equipment
installed in violation of any code or regulation.
It is reconunended
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
fbr 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
fl_om the American Gas Association Laboratories,
8501 E. Pleasant Valley Rd., Cleveland, Ohio 44131.
These furnaces have been classified as CATEGORY IV
fhrnaees in aecordanee 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 fbr servicing the furnace and
other equipment?
A minimum of 24 inches fi'ont 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
aceunmlation
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 so electrical components are
protected fi'om water.
8. If the furnace is installed in a residential
garage, it
must be installed so that the burners, and the ignition
18-CD19D8-14

Guide

Contents
Installation Instructions
General
Location and Clearances
Outline Drawings
Upfiow Installation
Downfiow 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
J_

*UX2 UPFLOW / HORIZONTAL
_5/8"

4 I/2

(ALL

i i

A,R F;_

5/8" ji

IN INCHES)

i-I,

_2"FLUE

SEE
L

DIM

m
m
CONNECT

NOTES

1/16"

ICAL_

._'I

i/78" × 7/8"_._,

'\'_

SLOT KNOCKOUT
CONDENSATE DRAIN

_HOR

HOLE_

SUPPLY

"E"

OUTSIDEAIR

ELECTR

ARE

DRAWING

OUTLET
-_..._D,M
"B"

DIM "C-

_ 7/8"

DIMENSIONS

OUTLINE

."._ff_

15/16"

I ZONTAL
SIDE

_7/8"
KNOCKOUT
J
ELECTRICAL
/SUPPLY

APPLICATION
ONLY)

\/_,THIS

-2,/,6,,\_

I/I

(ALTERNATE)

_
_

(HORIZONTAL)

(ALTERNATE)

__._

¢,,/8,,
KNOCKOUT__ ._ _'
CONDENSATE DRA N

I/8" KNOCKOUT
DRAIN
(ALTERNATE)

_,_

--_

3os/8" o

/4,,

I/2"_

5 II

14 7/8"

DIM "A"

I 9/16"

6 I/2"
_

I/2"

MINIMUMCLEARANCETO
COMBUSTIBLE
MATERIALS

Model

DIM"A"

DIM"B"

DIM"C"

DIM"D"

DIM"E"

DIM"F"

*UX2BO6OA9362A
*UX2BO8OA9422A

17-1/2"

2-1/4"

16-1/4"

16"

7-1/2"

*UX2C1OOA9482A

21"

2-1/2"

19-3/4"

19-1/2"

*UX2D12OA9602A

24-1/2"

2-15/16"

23-1/4"

23"

10"

(See Note 1 & 2)

INLET
AIR

DIM "D"

* Prefix

_24

1/32"_-I

_o
6

May Be "A" or "T"

From Dwg. 21 C341884 Rev. 1

UPFLOW
SIDES
REAR
FRONT
TOP
FLUE

O
0
3
I
O

IN
IN
IN
IN
IN

HO_ZONTAL (FLUE
DISCHARGEON THE LEFTI
ALCOVE
SIDES
RIGHT
O
LEFT
0
REAR
6
FRONT
18
TOP
I
FLUE
O

Notes:
1, *UX2D120A9602A
*UX20100A9482A

proper

q_
EJ

7/32"

Requires 3" Diameter
Vent Pipe.
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 altitudes. Refer to the Vent Length Table for

,co

5/16"

I __=11

,8/8_ -_233/4
_28

°/

-,7/8_22,2,, I

40II

°I I

application.

CLO_-T
SIDES
RIGHT
LEFT
REAR
FRONT
TOP
FLUE

I
I
3
3
I
O

=,
n_

*DX2 DOWNFLOW
©
E_

2 I FLUE
_,ONNECT
SEE NOTE i

r,D
E_

4,,2,d/

5/8"

/ HORIZONTAL

OUTLINE

DRAWING

(ALL DIMENSIONS ARE IN INCHES)

DIM "B"

INLET

DIM "C"

AIR

"•'
5 I_

"--

3" OPENING
AIR INTAKE

9-5/8"

5/8'

ELECTRICAL
CONNECTION (ALTERNATE)

4 ] / [ 6" _"4
HORIZONTAL

HORIZONTAL

DRAIN
I 7/8" x 7/8"
SiO- KNOCKOUT

APPLICATION

(THIS SIDE ONLY)

FI/2

i/2"]

KNOCKOUT

2-I/8"_

LECTRICAL
SvPPLY

_iI/2"
GAS
CONNECTION

CONNECTION
AIR INTAKE

4
3_15/16

''
2 i/16 ''_'

-',-CONDENSATE DRAIN
_i5/16"
KNOCKOUT

DIM "A"

7 3/8"

¢_-1/8 ,I

CONDENSATE DRAIN
KNOCKOUT

_i
I/2 'I
GAS CONNECTION
(ALTERNATE) KNOCKOUT

Model

t
DIM "D"

3/4"

OUTLET
AIR

_ .........................

3/41'_

(See Note 1)

DIM"B"

DIM"C"

DIM "D"

*DX2BO6OA9362A
*DX2BO8OA9422A

17-1/2"

2-1/4"

16-1/4"

16"

*DX2C100A9482A

21"

2-1/2"

19-3/4"

19-1/2"

*DX2D12OA9602A

24-1/2"

2-15/16"

23-1/4"

23"

HORIZONTAL)FLUE
BSCHARGE ON THE LEFT)
ALCOVE
SIDES
R_GHT
O IN
LEFT
O IN
REAR
6 IN
FRONT
18 IN
TOP
IN
FLUE
IN

I,,,k
I
I

3/41'
* Prefix May Be "A" or "T"

From Dwg. 21C341885 Rev, 1

DIM "A"

MINIMUM CLEARANCE TO
COMBUSTIBLE MATERIALS
OOWNFLOW
S_DES
o FN
REAR
0 IN
FRONT
3 IN
TOP
I EN
FLUE
0 IN

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.

CLOSET
SIDES
RIGHT
LEFT
REAR
FRONT
TOP
FLUE

IN
IN
IN
IN
IN
IN

€__,
O,

Installer's

Guide

UPFLOW INSTALLATION

TABLE

Standoff5 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 fanges.
The
standoff is inserted into the cabinet alignment
hole. The drill
screws are inserted through the standoft_ then screwed into
the furnace flange. The coil is always placed downstream
of
the furnace airfow.

14-1/2"
17-1/2"
21"
24-1/2"

13-1/4"
16-1/4"
19-3/4"
23-1/4"

HORIZONTAL

C ....

13-5/8"

20-1/8"

12-5/8"

19-3/8"

16-5/8"

20-1/8"

15-5/8"

19-3/8"

20-1/8"

19-1/8"

19-3/8"

23-5/8"

20-1/8"

22-5/8"

19-3/8"

INSTALLATION

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. The coil is placed downstream
of the furnace, with the
apex of the coil pointing in the direction of the airfow for
horizontal
installation.
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 horizon-

FOR VERTICAL

STANDOFFS
SIDES)

(_)

DOWNFLOW INSTALLATIONS
CABINET
SUB=BASE
FLANGE
CABINET
SIDE_

PLENUM OPENING

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).

iiiiiiiiiiiiiilliliiiiliiiiliiiiliiiiliiiiliiiiliiiili

(BOTH

CABINET
RETURN
FLOOR OPENING
WIDTH DUCT WIDTH
"A ....
B ....

SIDE

SUB-BASE
FLANGE

-_.

(BENT

CASED COIL CONNECTION
BRACKET FOR DOWNFLOW
FURNACE IN HORIZONTAL
DOWNFLOW

ONLY

UP)

SDB=OASE
L
tal, aligns and attaches the TXC coil as in Figure
the coil requires additional
support.
FLOOIt
COMllUS,I,IBI,E

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.

1. However,

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 fl'om the front in the vertical position). The horizontal furnace installation
in an attic should be on a service
platform large enough to allow fbr 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 fl'aming.
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 fl'om moisture. The furnace

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

UPFLOW/
HORIZONTAL
SHOWN WITH
DIRECT VENT

18-CD19D8-14

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

®
50 CU. FT. OR MORE

.... \
WATER

/
CLOTHES

Confined spaces are installations
with less than 50 cu. ft. of
space per 1000 BTU/hr input fl'om all equipment installed.
Air for combustion and ventilation requirements
can be
supplied from inside the building as in Figure 9 or fl'om the
outdoors, as in Figure 10.

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 fbr proper clearances fi'om 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 fi'ee of
obstructions which restrict the flow of air. Airflow restrictions affbct 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
fl'ee flow of air for proper performance.
Provisions for combustion and ventilation
air shall be made
in accordance with latest edition of Section 5.3, Air for
Combustion and Ventilation,
of the National Fuel Gas Code,
ANSI Z223.1 -- CAN/CGA B149.1 or applicable provisions of
the local building codes. Special conditions created by
mechanical exhausting
of air and fireplaces must be considered to avoid unsatisfactory
furnace operation.
OUTSIDE AIR IS RECOMMENDED
The use of indoor air for most applications
is acceptable,
unless there is the presence
of corrosive
chemicals
or
contamination.
Certain types of installation
will require
the use of outside air for combustion.
The following types of installations
will require use of
OUTDOOR AIR for combustion, due to chemical exposures:
* Commercial buildings
* Buildings with indoor pools
* Furnaces installed in "confined" laundry rooms
* Furnaces installed in "confined" hobby or craft rooms
* Furnaces
installed near chemical storage areas.

18-CD19D8-14

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 OUTDOORAIR
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 refl'igerants
* Cleaning solvents (such as perchloroethylene)
* Printing inks, paint removers, varnish, etc.
* Hydrochloric
acid
* Cements and glues
* Antistatic fhbric softeners for clothes dryers
* MasomT acid washing materials

space" or an

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

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

1. All air fl'om 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.
Refbr to Table 2 for minimum open areas
requirements.
2. All air fl'om 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. Refbr to Table 2, for
minimum open areas requirements.
TABLE 2
MINIMUM FREE AREA IN SQUARE INCHES
EACH OPENING FURNACE ONLY)
Furnace
Maximum
BTUH/INPUT

Air
From
Inside

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

100
100
100
120

Air From Outside
Vertical
Duct

Horizontal
Duct

15
20
25
30

30
40
50
60

Installer's

Guide
DUCT

®
CONFINED SPACE
AIR FROM INSIDE BUILDING

CONFINED
SPACE

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 pi_vent
chilled air
fl'om 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.

PERMANENT
OPENINGS

On any job, flexible connections
of"nonflammable
material
may
be used for retta'n air and discharge
connections
to prevent
transmission
of"vibration.
Though these units have been
specifically
designed
fbr quiet, vibration
fi'ee operation,
air ducts
can act as sounding
boards and could, if poorly installed,
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

IIL

II/

CONFINED
SPACE

CONFINED SPACE

OUTDOOR
AIR

the floor or through
the
installation
of air return
central
hall).

DUCTS

INLET

_'_
_UVERS
TO OUTDOORS

--.OUTLET
INLET
AiR DUCT

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 50 ° F.
All return
air duct
return
air filters.
1. Set

CONFINED

SPACE

TO OUTDOORS

. OUTLET
AIR

SPACE

• INLET
AIR DUCT

the furnace

2. For upflow
tion around

AIR FR(

CONFINED.

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

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.

AIR

attic. Such design
permits
the
remote
fi'om the living area (i.e.

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

ALTCI
N L EETR_II_ E_D

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.

side
the

systems

should

provide

for installation

in place.
return
installations,
remove
the insulaopening" in the blower
compartment.

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
fer cutting"
an opening"
Figure
11 and the outline
duct connection
dimensions
for

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

18-CD19D8-14

Installer's
4. Ifa
add
Cut

3/4" fllange is to be used

fbr attaching"

the air iMet

to cut where indicated
by dotted
lines
corners
diagonally
and bend outward

duct,

in Figure
11.
to form flange.

5. If flanges
are not required,
and a filter' fl'ame
cut between
locating" notches
(Figure
11).

is installed,

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 fl'ont 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
requires
an external
filter
bottom return filter within
are available
for horizontal

of the upflow furnace
section. Do NOT use the
the furnace.
Filter kits
applications.

Guide

NO TE:
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).

to @

....................

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 fl'ont 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
*UX2B060A9362A
*UX2B080A9422A
*UX2C100A9482A
*UX2D120A9602A

CABINET
WIDTH

FILTER
QTY & SIZE

17-1/2"

1 - 17" X 25" X 1"

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
NOTCHES PROVIDED FOR SIDE
RETURN CUTOUT

*-.

FURNACE

ONLY

t
/

Blower Door Hinge and Bottom Filter Rack Installation

FILTER
RACK "_

CUT OUT FOR
SIDE FILTER
RETAINING
PIN
(Both Sides)

SEE OUTLINE DRAWING
18-CD19D8-14

RONT
of Furnace

Optioinal Filter Rack Accessory Kit - BAYRACK960A
9

Installer's

Guide
BOTTOM ENGAGEMENT
Filter Rack

Blower Deck

EogagemeotII

Hole

•

_11
/

Retaining
Screw/Pin

Furnace
Cabinet

Filter
Rack

Side

Engagement Hole
For Filter Rack
Installation With

I
ENGAGEMENT
_

"":

B°tt°m

Return

HOLE DETAIL

(Typical both sides

BLOWER

and blower deck)
OPTIONAL

FILTER

RACK INSTALLATION

TURN AIR ON UPFLOW

FURNACES

Engagement Hole
For Filter Rack
Installation With
Side Return

FOR SIDE RE-

Blower
Deck

(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

fbllowing

a. Open

instructions

or remove

b. Remove

be used:

door.

Furnace

the filter'.

Compress
pins/screws
rack out.
d. Leave

should

the blower

the filter rack to disengage
the retaining"
from the furnace
sides and slide the filter

the bottom

panel

Cabi net,,,,,]l_
Side

in place.

Retaining
Screw/Pin

e. After the side cutout
is made fbllowing
the directions
in the "Return
Air Duct Connections"
section
on
pages 8 and 9, compress
the filter
in the side of the furnace.
Confirm
retaining
pit, screw locks into the
the blower
deck and the lower pit,
the side of the bottom
panel.
See
f. Reinstall
chamfer

the furnace
end first.

filter

on the

rack and reinstall
that the upper
engagement
hole in
screw rests against
Figures
15-19.
side inserting

the

Filter

Furnace
Cabinet

Side

SIDE
CUTOUT

Rack
Assembly

RETAINING
PIN
(Both Sides)

Rack

Filter Rack
FILTER
RACK
RAILS

Retaining
Screw/Pin
Engagement Hole
For Filter Rack
Installation With
Bottom Return

Typical Upflow Left Side Return Filter
Rack Installation
Optional

BOTTOM
PANEL
INSTALLED

Filter Rack Accessory

Kit - BAYRACK960A
18-CD19D8-14

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 fblnvard 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 fm'nace fi'ont channel fbr door' replacement.

Typical Upflow Right Side Return Filter Rack Installation

@
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.
2. Install the clips in fi'ont and rear of the desired location
using the screws provided.
The filter clip with the leaf
spring mounts in the rear of the cabinet.

CHAMFER
END OF
FILTER GOES
INTO FILTER
RACK FIRST

RETURN AIR FILTERS FOR UPFLOW
HORIZONTAL
CONFIGURATION

FURNACE

@
IN

When the Upflow
Furnace
is installed
in the horizontal
config'uration,
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.

O
ALTERNATE FILTER
CLIPS LOCATION
]

FILTER CLIP - KIT09224

TYPICAL RETURN AIR FILTER INSTALLATION IN
UPFLOW MODEL IN HORIZONTAL POSITION
18-CD19D8-14

Installer's
INSTALLING

Guide

THE FILTER

TABLE

The filter may need to be cut to fit the unit
location
of the return
air filter.
A score

line

and

the words

"CUT

HERE"

end of the filter.
If your application
filter, do so as indicted
by the score

depending"

are

requires
mark.

on the

located

on the

cutting

the

RETURN AIR

UNIT
SIZE

BOTTOM

SIDE

17-1/2"

DO NOT CUT

21"

DO NOT CUT

CUT ON LINE

24-1/2"

DO NOT CUT

CUT ON LINE

TYPICAL
DOWNFLOW
INSTALLATIONS

FURNACE

RETURN

CABINET
WIDTH

*DX060R936
*DX080R942

17-1/2"

*DX100R948
*DX120R960

FILTER
QTY & SIZE
2- 14"X20"X

21"

2- 16"X 20"X

24-1/2"

2 - 16"X 20"X

*First letter may be "A" or "T"
TABLE
LOCATING

FILTER RETAINER
DUCTWORK
DIMENSION
"A ....

BRACKETS

DIMENSION
B"

RETURN
DUCT
WIDTH

17-1/2"

16-1/4"

15"

14"

14-3/8"

21"

19-3/4"

19-1/2"

14"

13-1/8"

24-1/2"

23-1/4"

22"

14"

' LOCATION DIMENSION
IS FROM END OF DUCT AGAINSTTHE
SCREW HOLES FOR THE BRACKET.

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.

CABINET
WIDTH
AIR FILTER

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

MODELS
NUMBERS

FILTER
BRACKET
LOCATION'

13-5/8"
FURNACE

TO THE

Optional
BAYFLTR206
Door Kit

Airflow
DOWNFLOW

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

HORIZONTAL
CLOSET

HORIZONTAL
ALCOVE / ATTIC

SIDES

BACK

TOP

FRONT

18"

VENT

NOTE: CLEARANCE

VERTICAL
CLOSET

REQUIRED AT TOP OF PLENUM IS 1"

18-CD19D8-14

Installer's
The following

warning

complies

with State of California

law, Proposition

65.

Hazardous Gasest

Carbon
injury,

monoxide,
fire or smoke can cause
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
Safhty Commission
recommends
that users of gas-burning
appliances
install
carbon monoxide
detectors
as well as fire and smoke
detectors per the manufactureffs
installation
alert dwelling
occupants
of the presence
unsafh levels of carbon
monoxide.
These

instructions
to help
of fire, smoke or
devices
should be

listed by Underwriters
Laboratories,
Inc. Standards"
for
Single
and Multiple
Station
Carbon
Monoxide
Alarms',
UL 2034 or CSA International
Standard,
Residential
Carbon
Monoxide
Alarming
Devices,
CSA 6.19

NO TE:
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 ANYVENT SERVING ANOTHER APPLIANCE.
PLEASE NOTE THAT
THESE FURNACES
USE POSITIVE-PRESSURE
VENT
SYSTEMS.
Proper venting is essential to obtain maximum efficiency
fi'om 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 fi'om 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 masomT
chimney containing flue products fi'om 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 Z2L47 "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.
NO TE:
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 remainincl
attached appliances.

18-CD19D8-14

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 fhns,
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 fens, 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 VENTAPPLICATION:
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 shaft 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.

Furnace combustion air requirements
must be met for
nondirect,
single pipe applications
(See example on
next page).

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 surfhce of the structure.
However, the longest individual pipe will decide the value
[br the longest allowable equivalent vent/inlet
air length
as shown in the vent length table.

Installer's

Guide
Attic

NO TE:
BAYVENT200* accessories can be used for inlet and outlet
terminals when the pipes do not exit the structure together.
The following are EXAMPLES

ONLY:

Vent
Air

II II

Furnace U

Air
Inlet

EX. 41
The inlet air does not have to come It'om 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.

Furnace
EX. 1 i
Example I 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.

Air _

z2:

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

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

Inlet_
(See Note)

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.

EX. 2 1

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

Example 2 shows the vent pipe exhausting
through the roof
and the inlet air coming fi'om the interior of the house (See
Note). The inlet air coming fi'om 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:
It is recommended that the first joints from the furnace be
connected and sealed with high temperature RTV. This will
enable the pipes to be removed later without cutting.
Be sure to properly

support

these joints.

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

Vent

Air
Inlet
_

Furnace

EX. 31

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 offht_ace and size of the vent pipe. This example
demonstrates
that the pipes do not have to exit on the same
side of the structure.
14

ASTM D1785, D2466,

and Solvent
for Cementing

Cement
Joints

D2661, & D2665

-ASTM
- RefASTM

D2564
D2855

1. Cut pipe square, remove ragged edges and burrs.
ChamIbr end of pipe, then clean fitting socket and pipe
joint area of all dirt, grease, moisture or chips.
2. Aider 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-CD19D8-14

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

NO TE:
Follow venting instructions carefully when using PVC
cement.

5. Wipe all excess cement fl'om 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.

2-3/16"

4-1/2" _

WALL MOUNT FLANGE
BAY69X 148

5-5/8" -_

WALL MOUNT FLANGE
BAY69X

147

PLASTIC PIPE DESIGNATIONS
PVC
ASTM

STANDARD
F891

PIPE TYPE

ALLOWABLE

TEMPERATURE

MARKING

CELLULAR CORE

"158

ASTM F891

D2665

DWV PIPE

*'158

ASTM D2665

D1785

SCH 40, 80, 120

*'158

ASTM D1785

D2241

SDR SERIES

*'158

ASTM D2241

CPVC
ASTM

STANDARD
D2846

PIPE TYPE

ALLOWABLE

TEMPERATURE

MARKING

CPVC 41

*'212

ASTM D2846

F441

SCH 40, 80

*'212

ASTM F441

F442

SDR SERIES

*'212

ASTM F442

ABS
ASTM

STANDARD

PIPE TYPE

D2661

SCH 40 DWV

**'180

ASTM D2661

F628

SCH 40 DWV CELLULAR CORE

**'180

ASTM F628

- Allowable

temperatures

based on classifications

** - Allowable
*** - Allowable

temperatures
temperatures

based on classifications
based on classifications

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

covered

ALLOWABLE

in ASTM

D4396

TEMPERATURE

[Deflection

covered in ASTM D1784 [Deflection
covered in ASTM D3965 [Deflection

of the pipe and collar of the combustion
air inlet
be a fl'iction 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

Temps

MARKING

Under Load (264 PSI)]

Temps Under Load (264 PSI)]
Temps Under Load (264 PSI)]

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.

NO TE:
Vent termination kit BA YAIR30A VENTA or BA YVENT2OOB
may be used in addition to the horizontal and vertical
termination options shown in the following figures.
18-CD19D8-14

FrontofFumace

Seal INLET AIR PiPE
with RTVsealant

Installer's

Guide
VENT

ALTITUDE
0-7,000

LENGTH

MAXIMUM

TABLE

TOTAL EQUIVALENT

LENGTH

IN FEET

FOR VENT AND INLET AIR (SEE NOTES)
2 INCH PIPE

2.5 INCH PIPE

3 or 4 INCH PIPE

UX2/DX2B060A9362A

Feet

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

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).
HORIZONTAL
(Upflow

equivalent

length is 0 feet.

INSTALLATION

/ Horizontal

or Downflow

2" TO 3" COUPLING

/ Horizontal)

NO TE:
In horizonal 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
followinqmodels:
UC120 & DC120,
UX120 & UY120
UXIO0_
UYIO0,
UX808C960,
andall
DX & DYmodels.

_I_RY
THE

SUPPLIED
ONLY WITH
FOLLOWING
MODELS:

UC120 & DC120
120 & UY120
|

LABEL

UXl00 & UYIO0
UX0800960
ALL DX & DY MODLES

SAYS

"TOP"
VENT
OUTLET

18-CD19D8-14

Installer's

Guide

G
\6"
MAX

ELBOW AND TEE MUST BE
AS CLOSE TOGETHER
AS POSSIBLE

6"
MAX

POSSIBLE CONFIGURATIONS FOR TWO PIPE VENTING SYSTEMS

NOTE:

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

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

USE ONLY
APPROVED
TERMINATION

STRAP
(FIELDSUPPLIED)

COMBUSTION
AIR INLET

COMBUSTION
AIR

RAIN CA[

VENT

1" + 1/2"

ELBOW
COMBUST]ON

40" UPFLOW
DOWNFLOW

OR
MODELS

NOTE: ANY FITTINGS
PASSING
THROUGH
AN UNHEATED
SPACE
MUST

BE INSULATED.

AIR

(FIELD
SUPPLIED)

BA YAIR3OAVENTA

45' ELBOW

_/TEE

FIELD SUPPLIED

_J_l"

,PNEEDED\
J_

_-::'i!_

BA YVENT2OOB _
STUB CUT AT
45 ° ANGLE

18-CD19D8-14

WALL CAVITIES

Installer's

Guide
(_

COUPLING
( PLASTIC
VENTING )

PVC WALL
MOUNT
FLANGE

6 IN Mli'

12" MINIMUM
TO OVERHANG

, ,](TO JOIN

SCREWS
"(4 req.)

/
VENT
CAP

1" CLEARANCE
( AIR SPACE

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

VENTING

BAYVENT200A/B

12"MIN. ABOVE
NORMALLY EXPECTED
SNOW ACCUMULATION

)

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

WALLS

CLEARANCE ( 0" ACCEPTABLEFOR PVCVENT PIPE )
I" ACCEPTABLEFORTYPE 29-4C STAINLESS STEELVENT PIPE

PVC WALL MOUNT
FLANGE

COUPLING
( PLASTIC
VENTING )
/

90_ELBOW

6 IN. MIN.

II(TO
JOINT

CEMENT
MORTAR SEAL
INSIDE &
OUTSIDE

BAYAIRJOAVENTA
(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 he 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
Avoid areas
a problem.

where

staining

)

must be located at least 12"
expected snow accumulation
level.
or condensate

drippage

may be

Location of the vent/wind
terminal should be chosen to meet
the requirements
of Figure 39 fbr 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.

12"MIN.ABOVE
NORMALLYEXPECTED
SNOWACCUMULATION

VENTING THROUGH NON-COMBUSTIBLE WALLS
Pitch - 1/4 Inch Per Ft.
materials.
This can be avoided
by using the roof or chimney
venting
option. When wall venting
is used on any surfhce
that can be affbcted
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 fbet 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 fhsteners suited to the outside or
inside wall surthces.
NONCOMBUSTIBLE MATERIAL WALL
The hole through the wall must be large enough
pitch of vent and properly seal.
Use cement
Figure 32.

mortar

seal on inside and outside

to maintain

of wall. See

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

18-CD19D8-14

Installer's

Guide

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

cou__b
,
ff
40" UPFLO_"

OR DOWNFLOVV

IIII

FURNACE
iii7i_7}{i{iiiiiiiii{

HOPJZONTAL

AND VERTICAL

VENTICAL

VENT

9" MIN.

M,tO,MUM NOT TO EXCEED
DISTAF4CE
FROM TOP

BE 12* _ 1"

I I

24 INCHESABOVE ROOF

REMOVE
FROM

RIBS

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

J
#
COMBUSTION
AIR INLET

MAINTAIN

VENT
'i

CAP

MAINTAIN 12 IN.
(18 IN. FOR CANADA)

12 IN.

(18 IN. FOR CANADA)
MINIMUM
CLEARANCE

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

[

COUPLING

COMBUSTION AIR

(F,EL2OU%%<_
SUPPORT

(FIELD

SUPPLIED)

CEILING

GALVANIZED FIRESTOP SHOULD
BE FABRICATED WITH 3-7/8" BIA.
HOLE FOR SUPPORT FLANGE
(12" x 12" PANEL OR 12" DIA MIN.)
VENT

BAYAIR30AVENTA
18-CD19D8-14

[_\

_1_
MouST'oN

(VERTICAL)

CLEARANCE (0" ACCEPTABLE
FOR PVC VENT PIPE )
( 1" ACCEPTABLE
FOR TYPE 2B-4C STAINLESS STEEL VENT PIPE )

VENTING THROUGH

CEILING

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
N
SUPPORT
FLANGE

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

FLOOR
I ...........

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 TYPE 2_C
STAINLESS STEEL VENT PIPE)

are to be supplied

DIRECTION OF STAINLESS STEEL FITTING
All stainless steel fitting" must be installed with male end
towards the furnace.
All horizontal stainless
with the seam on top.
All long" horizontal
sagging.

steel sections

sections

must be positioned

must be supported

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

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

to prevent

STAINLESS STEEL
VENT CAP

escape

(OPTIONAL)
SEE CAUTION

6 IN. MIN.

PVC PLASTIC VENTING - ONLY
THROUGH UNUSED CHIMNEY
STAINLESS STEEL
VENT CAP
(OPTIONAL)_

FLUE PIPE _.__

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

/
J

6_,_N.

COUPL,NG
TO
PiPE FROM ANGLES
OR OTHER SUITABLE
SUPPORT METHOD

WALL
FLUE
P,PE
AND

_,_z,
, _._
_ XJ
_
q 1/,
,_
_-_ r_
_J
"_L
4 1S

CENTER IT IN THE
CHIMNEY OPENING WITH
ANGLES AS SHOWN OR
ANOTHER EQUIVALENT

COUPLING

__/,,_

(/'_"

AS REQUIRED
NOTE:
HORIZONTAL
TO VERTICAL

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

NOTE:
HORIZONTAL
TO VERTICAL

VENTING
VENTING

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

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.

IMPORTANT The 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-CD19D8-14

Installer's

HORIZONTAL

Guide

VENT CLEARANCES

[]

VENTTERMINAL

AIR SUPPLY INLET

[]

AREA WHERE TERMINAL

Non-Direct

Vent Terminal
Canadian

Clearance
balcony

above

grade,

Clearance

to window

veranda,

porch,

or door that

deck,

may be opened

Clearance
Vertical

to permanently
clearance

the terminal

closed

soffit

a horizontal

distance

(61 cm) from the center

line of the

Clearance

to unventilated

Clearance

to outside

Clearance

to inside

Clearance
to each side of center
above meter/regulator
assembly

Clearance

building

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

12 inches

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

(91 cm) for appliances

> 100,000

Btuh

(30 cm)

4 feet (1,2m) below or to the side of opening;
1 foot (0,3m) above opening.

(30 kw)

located

above

of 2 feet

terminal

soffit

corner

regulator

to nonmechanical
or the combustion

line extended

vent

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

outlet

air supply

inlet to

air inlet to any other

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

Clearance

to a mechanical

air supply

Clearance
above
driveway located

a paved sidewalk
on public property

Clearance

veranda,

porch,

15 feet (4.5 m) above
assembly

the

3 feet (91 cm)

appliance

under

(30 cm)

corner

to service

Clearance
J=

US Installations

window

to ventilated

within

Clearances
Installations

12 inches

36 inches

IS NOT PERMITTED

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

(91 cm) for appliances

inlet

> 100,000

Btuh

4 feet (1,2 m) below or to side of opening;
1 foot (300 m) above opening

(30 kw)

6 feet (1.83m)

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

or paved
7 feet (2.13
deck,

or balcony

12 inches

m) 1-

7 feet

(2.13

(30 cm)

Notes:
1.
2,

In accordance
In accordance

with
with

the current
the current

1,
:_,

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-CD19D8-14

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

and the

dwelling

manufacturer's

and serves
Installation

both

dwellings.

Instructions.

Installer's

Guide
Direct

Vent Terminal

Canadian
Clearance
above
deck, or balcony

Clearance

grade,

to window

veranda,

porch,

or door that may be

opened

Clearance
Vertical
located

to permanently

closed

Btuh

US Installations

(30 cm)

6 inches (15 cm) for appliances
12 inches (30 cm) for appliances
36 inches

Installations

12 inches

and =/< 100,000

Clearances

12 inches

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

(30 kw),

6 inches
9 inches

(15 cm) for appliances
(23 cm) for appliances

and =/< 50,000

(91 cm) for appliances

> 100,000

Btuh

(30 kw)

(30 cm)

12 inches

Btuh

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

(15 kw),

(30 cm) for appliances

> 50,000

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

soffit

corner
corner

to each side of center line
above meter/regulator
assembly

inlet to building

regulator

vent outlet
air supply

or the combustion

inlet to any other

appliance

Clearance

air supply

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

Clearance
or balcony

veranda,

porch,

m) above

the

3 feet (91 cm)

36 inches

to a mechanical

15 feet (4.5
assembly

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

air

under

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

(91 cm) for appliances

inlet

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

Btuh

(30 kw)

6 feet (1.83m)
7 feet (2.13

deck,

12 inches

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

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

(30 cm) for appliances

3 feet (91 cm) above

if within

> 50,000

Btuh

(15 kw)

10 feet (3m) horizontally

m) 1

(30 cm) :_

Notes:
1,
2,

In accordance
In accordance

A vent

:_.
*

Pemitted
Clearance

with
with

the current
the current

shall not terminate
only if veranda,
in accordance

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.

@
DOWNWARD

VENTING

Furnace may be in vertical or horizontal configurat_1

._Iv

All horizontal pipes must be
supported at maximum of 3

DOWNWARD VENT LENGTH IS
LIMITED TO A MAXIMUM OF 15
S

EQUIVALENT_FEET.

40 Inch
SEE
NOTES

foot intervals

Upflow or
Downflow
Furnace

Slope 1/4" per ft.

Slope 1/4" per ft.
NOTES:

_t_

-II

W-

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-CD19D8-14

Installer's
CONDENSATE

DRAIN

INSTRUCTIONS

Guide

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

Downflow
furnace
- The turnace is shipped with the lett
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
fl'om 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.

VERTICAL

HORIZONTAL

prT_ [o,T._u
luul
[o]_I

APPLICATIONS

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

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

Left side

Right side

UPFLOW (VERTICAL)

Use
extension
hose here

Use Inducer Drain
hose without
extension

UPFLOW HORIZONTAL 17" UNITS
(Left side only)
18-CD19D8-14

UPFLOW HORIZONTAL 21" & 24" UNITS
(Left side only)
23

Installer's
auxiliary drain
in this line).

Guide

pan to a separate

drain line (no trap is needed

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
recouperative
cell. Remove
the larger drain line
(from the secondary
cell) and trim to fit between
the secondary cell and the new trap location.
On upflow units, plug" the
hole in the blower deck where the tube went through.

Remove the hose fi'om the induced blower and reposition into
the other drain tap of the inducer, which is located 90 °
clockwise around the inducer. Move the cap fi'om that drain
tap to the unused drain tap. On upflow units, plug" the hole in
Cut off curved end of
Inducer drain hose

DOWNFLOW (HORIZONTAL)
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 fi'om 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.

Left
side

NO TE:
Use 1/2" or larger PVC or CPVC pipe and fittings as required
for drain connections (fittings, pipe and solvent cement not
provided).
NO TE:
A corrosion resistant condensate pump must be used ffa
pump is required for a specific drain system.

DOWNFLOW (VERTICAL)

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

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 fi'om
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 fi'om the vent stack opening will flow into an
auxiliary drain pan in order to prevent water damage to the
finished ceiling below.

DOWNFLOW (VERTICAL)
24

18-CD19D8-14

Installer's

Guide

FIELD WIRING

DIAGRAM FOR 2 STAGE FURNACE
1 STAGE HEATING
USING A 1 STAGE HEATING THERMOSTAT
NO COOLING

2 _TAGE
I STAT
FURNACE
NOTES:
F.............................
7 SEE
.............................
NOTE7
L-_IN
I
BE SURE POWER AGREES WITH EQUIPMENT
NAMPLATE(S}.
2.
LOW VOLTAGE
124V
WIRING>
TO BE NO. 18 A.W.G
MIN..
3
GROUNDING
OF EQUIPMENT
MUST COMPLY WITH LOCAL CODES
4,
SET THERMOSTAT
HEAT ANTICIPATOR
PER UNIT WIRING DIAGRAM.
S
THESE LEADS PROVIDE
llS V, POWER FOR CONNECTION
OF ELECTRONIC
CLEANER AND HUMIDIFIER
MAN, LOAD l,O AMPS EACH
6
THIS CONNECTION
IS ONLY USED FOR THERMOSTATS
REQUIRING
CONNECTION
TO THE 24 V
POWER SUPPLY
(COMMON}
SEE
7
SEE TWINNING CONNECTION
DIAGRAMS
FOR PROPER CONNECTIONS
I

I_TE_

If upflow furnace is installed
over a finished ceiling, overflow
from the primary drain vent

the

finished

ceiling

AIR

WHEN UGING THIS FEATURE
WHEN A HEATING THERMOSTAT IWITHOUT FAN SWITCH} IS USED,
NO WIRING ON "G" TERMINAL OF IFC IS USED.
Wl AND W2 MUST BE JUMPERED
TOGETHER FOR PROPER OPERATION
SECOND STAGE
HEATING WILL BEGIN IO MINUTES
AFTER FIRST STAGE

below.

Primary drain vent stack
must terminate below
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
FURNACE

T 'STAT
--

SEE

NOTE

NOTES

L_[_

[]

[]
[]

[]

2.
3.
4.
5.

BE SURE POWER AGREES WITH EQUIPMENT NANPLATE(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 1.0 AMPS EACH.
THIS CONNECTION IS ONLY USED FOR THERMOSTATS REQUIRING
CONNECTIONTO THE 24 V. POWERSUPPLY. (COMMON)
SEE TWINNING CONNECTIONDIAGRAMSFOR PROPERCONNECTIONS
WHENUSING THIS FEATURE.
N EMR
SC Ou
R E N'¢;D

'll
SEE

[]

NOTE
[]

TO115V1

PH.,

60 HZ,, POWER
SUPPLY PER
INTER

----LINE

--LINE

COMPONENT

WIRING

V. _FIELD
WIRING
_L
V.jr

LOCALCODES

HUM SEE
NOTE 5

/
/

J
=t N

FACTORY
WIRING
EAC SEE
NOTE 5

18-CD19D8-14

From Dwg. 21B342024 Rev. O

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
T'STAT

FURNACE

N01S:

SEE
NOTE7
L.--,,OUTDOOR UNIT
{NOTRANSFORMER)

[]

_}: SLRF
[ r,,, i (24V
*%R
01¢
v01T,,,D

3
4

GRO NDING 0
S i li;EigOS

N _i LE,_DS "Rr'
_
Dr'
R FOR CO'4q[CI
ON 0
EiE{
," :_,NiR
,e'\3
JP I} : .....
:!
MAX
OA}
0
o_"
[#('1
'
S CONNECilOk
S ON Y USE[} 0_
!ERvOS
AIS R OU RING
_1 a_l
uN 10 lie
24
PO',_,;ERSU PLY
,CCqM@,',
,,_,
S}E
TWINr
f
#,i :/,'5C0r'I' C i0N " A;_&,,S FOI PR('_Ei r_,
kqER US NG l IS E A 8!E
Y'
E/VlNINA
!Oq
liE
El RMOS A' _,'JSI BE 'gRID

]

SEE
]

NOTE8

]

[]

]

[]

TO T E 'Y'
0'
RAIION

EOU PV
AI lEA

TERb
DLJ(IP{

Jiili

[,,,J_" ,/;,['

RJN{?)

N1 qUS
AN I?[l:A

N,SL OR THE
,.,k/"
1'

[]

,!,IF ', S)

/',

;

LOCt, L CODES
i WlF, JKG DJAGPA_d

FUR'U, CE CONTRO

FOR PROPER

GROUND
SCREW

[]

NAtq_

COY
Y W'H
OR P RUN

ROqi

A R

BIO'¢_ R

FURNACE
JUNC[
iON
BOX

,ll

SEE
]

NOTE6

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

i
i
IN I

( OvlE

)ON

t,.

vNi/:,:

let

--NE

• N

L_
HUM SEE
NOTE 5

[

EAOSEE
::

FACTORY

From Dwg. B342021

NOTE 5

/ '¢,'_RiNO

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
T'STAT

NOTES:

FURNACE
SEE
NOTE 7
L._

OUTDOOR
(NO

UNIT

TRANSFORMER)

2,
3

!OW VOltAGE OF (24V
WIRING)MUST]0 COMPLY
BE NO WITH
18 AWG
GROUNDING
EQUIPMENT
LOCAl

4,
5.

SEE TNERMOS]AI
HEAl
TIIESE LEADS
PROVIDE

CLEANER
AND HUMIDIFIER
MAX
LOAD
THIS CONNECTION
!S ONLY
USED FOR

SEE

SURE

POWER AGREES

CONNECTION

NOTE8

7
8

[]
[]

[]

i
rq_-

THE

WITH

FOU}PMENT

NAMPLATE(S}

DIAGRAM
OF ELECTRONIC

AIR

I0
AMPS EACH
THERMOSTATS
REOU!RING

POWER SUPPLY

(COMMON)

SEE TW!NN}NG
CONNECTION
DIAGRAMS
_OR PROPER CONNECTIONS
WHEN USING
[HIS
EEAIURE
TI4E "Y" TERMININAL
FROM
THE THERMOSTAT
MUST
BE WIRED
TO THE "Y" TERMINAL
QF THE FURNACE
CONTROl
FOR PROPER
BIOWER
OPERAIION
DURING
COOLING
Wl AND W2 MUST BE JUWERED
SECOND
STAGE
HEATING
WILL

FIELD

TOGETHER
BEG!N
IO

ADDED

FOR PROPER
OPERATION
MINUTES
AFTER
FIRST

.............
_.........................
]_/_

,11

JUMPER(NOTE9)

_ _

704?%%

LOCAL CODES

wl,

_ _.

STAGE

F U R N ACE

SEE

i
i

M}N,
CODES

ANTICIPAIOR
PER UNI[
WIRING
115 V. POWER FOR CONNECTION

1ON

Box

(.#,,P_N
24

----LINE

--L]k

R_N
HUM SEE

I--

F: IF
I)
,'b_R ] N (_

NOTE5

FAC

EAC SEE

NOTE 5

ORY
NG

_1
BK

II
Jr

Wl
-BK

From Dwg.

B342019

Rev. 0

18-CD19D8-14

Installer's
TWINNING

CONNECTION

FOR TWINNING
1 STAGE

DIAGRAM

UX/DX-R

HEAT / 1 STAGE

Guide

FURNACES

COOLING

THERMOSTAT
tO _S

OUTDOOR
UNIT NO. 1
(WITH TRANSFORMER)
SEE NOTE 3

1 STAGE
HEATING / COOLING
THERMOSTAT

t
FURNACE

NO. 1

FURNACE

fiOTH FCRNACESMUST BE Pg#ERED FROI#
_i_ SAt41 r_SV L _ of
H_{UfT P4NH

NO. 2

BLOWER
OPERATION
OF
UN_NO2 iS SYNCR_q_ZED
W_TN
UNITNO 1VIASIGNALS
F_M TWINC_NECTION

_t_$L'RE24_
FUF2_IA_ TRAt,rSFOR_4E@S
AR_'
,W P_ASI¸ _'i_,iO_ 0 CO'@L T_Nd_CO,<_rCNO_,iS,
CH_C_ _IO__A6_ _ _#N_
R
f_i_r_,_S
O_¸
_AO,¸ FUR4A_,£ _ VOLT_G_ _S¸ £:Rr_A_E# T_,_i
Ot_ Ot_E OF T_E #U_?t_ACET_At_S_OR;eERS
3

0t79_0,_

Utf

HAS A Z4V

_RA_ ORU¢

1_ LD SUi' i f
US! itLOT ou?f RMA_
( 2C
SUC A_ R _0975
SE_ _ T CO_N[CTtOt

SEENOTE4

OUTDOOR

UNIT NO. 1

10 TRANSFORMER)

ON BOTH UNKS
2NDSTAGEWILL FIRE
10 M_NUTESAFTBR1ST

INTER

F _

COMPONENT

----LINE

Rli _ ',
...... i

"% FIEL D
V.j
WIRING
"_

--L]NE

W]R]NG

V.jr

FACTORY
WIRING

_SOLAT_ON
RELAY
SEENOTE4

{ {iiiiiiii

From Dwg.

21B341336

Rev. 2

SEENOTE5

TWINNING

CONNECTION

DIAGRAM

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

UNIT NO. I

2 STAGE HEATING

(WITH TRANSFORMER)
SEE NOTE 3

1 STAGE COOLING
THERMOSTAT

FURNACE

NO. 1

_o7_ uRt#,tc_s '_us 5_ #o¢,_0
;t sJ_d r SV ¢ _ of
t{ u

FURNACE NO. 2

BLOWER
UNIT
NO
WITH

UNIT

1 VIA

_GNALB

: _ _/'_..............

_FrH_

(FIE_DSUP_UED)
SEE NOTE4
I
I

=:TZ]

o
R1

SdPP_,iE_

dSE P_CT ObT_
¸ RELAr

_gO_',i _DO NC_ CO!_C_ _ _0 W_
_¢b4HOt_ _,'_Y t,'O_ _,_£_
d ¸ T,_¸ N_R_O_
_SOCAT_ONRELAy CO,';T_C_ _?_ RATED 4_ _ "_4 0__ A_OVE
SEENOTE4

[
_O TRANSFORMER)
OUTDOOR UNIT NO. 1

fro!4
#_,,,'f

OPERATION
OF
2 IS SYNORONIZED

m T
_>

F';
•
_T:

R21"> i ;

INTER

i Q

WIRING

o
24

----LINE'

"_
V.j>-

24
--LINE

I
I

COMPONENT

, I
::

"_
V.jr

FIELD
WIR

IN G

FACTORY
WIRING

.......

I
I

From

Dwg. 21 B341337

Rev. 2

i=
I

..........................
I ..........................

18-CD19D8-14

Installer's

Guide
TWINNING

CONNECTION

DIAGRAM

FOR TWINNING
UX/DX-R FURNACES
2 STAGE HEAT / 2 STAGE COOLING
THERMOSTAT
OUTOOORUNIT NO 2
(NO TRANSFORMER)
SEE NOTE 3

I
i

_OTES:

2 SaGE HEATENG
1 STAGE ¢OOUNG
THERMOSTAT

FU_NACENOI

S_ BOT_FUrnACESMUSTBE POWE_E_
f_OM
T_E SA_E n_W LEGOF C_Rcwr PANEL.

FURNACENO_2
BLUEROPER_'ON
OF

,,, 1

(NO TRANSFORMER)
i.................................................

R2; "

Ji/
[

..................

ISOLATION
RE_¥
(FIELD
SUPPLIED)
ALTERNATE
CONNECTION

B}O

INTER

COMPONENT
WIRING
ALrE_ATE_t_l_6 CO_rI_e_ATSO_
S[[ _Og 4

24
LINE
V.
From Dwg 218341338 Rev 2

24
--LINE

M. _
_
V.jr

FIELD
WIRING
FACTORY
WIRING

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
wiring" diagram.
As with
power, this
live electric
provided

furnace
circuit.

with

to the unit as indicated
all gas appliances
using

shall be connected
It is recommended

a separate

"circuit

the National
Electrical
Code,
Electrical
Code, if an external

into a permanently
that furnace
be

protection

circuit.
The furnace
must be electrically
dance with local codes or in the absence

on enclosed
electrical

device"

electric

grounded
in accorof local codes with

ANSI/NFPA
70 or CSA C22.1
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
_br hooking
up an electronic
air cleaner
and or
humidifier
is provided
on the integrated
control.
Refer to the SERVICE
FACTS
diagram
attached
to furnace.

literature

and

unit

wiring

18-CD19D8-14

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 -SHUT-OFF VALVE

GROUND

JOINT
UNION
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
SHUT-OFF
VALVE

AUTOMATIC GAS VALVE
WITH MANUAL SHUT-OFF

GROUND UNION JOINT
LEG

SH%%_#UL%
.........................
/_"11
GROUND /
UNION JOINT

DR
LEG

AUTOMATIC GAS VALVE
WITH MANUAL SHUT-OFF

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

18-CD19D8-14

Installer's

Guide

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.

TABLE 8
NATURAL GAS ONLY
TABLE OF CUBIC FEET PER HOUR OF GAS
FOR VARIOUS PIPE SIZES AND LENGTHS
PIPE

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, fbr 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.

LENGTH OF PIPE

SIZE

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 SEGR. gas

TABLE 9
ORIFICE SIZES
Use a backup wrench on the gas valve when installing gas
piping to prevent damage to the gas valve and manifold
assembly.

INPUT
RATING
BTUH

The furnace and its individual shut-offvalve
must be disconnected fi'om the gas supply piping system during any pressure
testing of that system at test pressures in excess of 1/2 psig
(3.5 kPa).

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

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).
NO TE:
Maximum pressure to the gas valve for natural gas is 13.8"
1/11.(7,,
Minimum pressure is 5,0" VV.C. Maximum pressure to
the gas valve for propane is 13,8" I/1!.(7,,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
WlTI-I AN OPEN FLAME!

MAIN BURNER ORIFICE
DRILL SIZE

NUMBER
OF
BURNERS

NAT. GAS

LP GAS

4
5

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 efh) Table 10
with the time docked.
4. Read the "Flow" column opposite the number of seconds
clocked.
5. Use the following factors if necessary:
For I Cu. Ft. Dial Gas Flow CFH =
Chart Flow Reading + 2
For 1/2 Cu Ft. Dial Gas Flow CFH =
Chart Flow Reading + 4

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

]
Separate the tube
at the unit Tee and
reconnect

with a

short piece of field

suppliedtubeand
anotherTeewith
the "U"Manometer

See
inset

F-_

I1"

"--)

]]

__
//

JlI
,_/,/

attached.

2:2:::_.. "_,__-_,_

Be sure to reconnect
unit tubing to original
positionafter testing
the manifoldpressure!

[{

_.=_,:. _.))
\'\ \

___\\\
_-.\

"-Jkz_-,

(71
Fieldsu bedbarb titi'in_ /
•
pp.
"g

manometer
tub:';:
°
t

attachedto the "OUTLET
PRESSURETAP" on the

CAUTION:
30

outlet side of the gas valve,
Return

all tubing,

caps,

and/or plugs to original

positions

when

pressure

checks

are completed.

18-CD19D8-14

Installer's
For 5 Cu. Ft. Dial Gas Flow CFH -10X Chart Flow Reading

1. Adjust
low fire by removing
seal screw (See Figure
48).

6. Multiply the final figure by the heating value of the gas
obtained fl'om 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 offall electrical power to the system.
b. Attach a manifbld 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 fbr 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:
TABLE 10

2 CUBIC FOOT DIAL
SEC. FLOW SEC. FLOW
29
248
50
144
30
240
51
141
31
232
52
138
32
225
53
136

FLOW
900
800
720
655

12
13
14
15
16
17
18
19
20
21
22

600
555
514
480
450
424
400
379
360
343
327

33
34
35
36
37
38
39
40
41
42
43

218
212
206
200
195
189
185
180
176
172
167

54
55
56
57
58
59
60
62
64
66
68

23
24
25
26
27
28

313
300
288
277
267
257

44
45
46
47
48
49

164
160
157
153
150
147

70
72
74
76
78
80

SEC.
82
84
86
88

FLOW
88
86
84
82

133
131
129
126
124
122
120
116
112
109
106

90
92
94
96
98
100
104
108
112
116
120

80
78
76
75
73
72
69
67
64
62
60

103
100
97
95
92
90

124
128
132
136
140
144

58
56
54
53
51
50

(inches

w.c.)

TABLE 11
FINAL MANIFOLD

PRESSURE SETTINGS

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.

18-CD19D8-14

low adjustment

2. To increase
outlet pressure,
turn the 3/32" socket
set screw clockwise.
To decrease
outlet pressure,
turn the set screw counterclockwise.
Adjust
regulator
until pressure
shown on manometer
matches
the pressure
specified
in Table 11.
3. Replace
securely.

low adjustment

4. Cycle the valve
setting.

several

seal

screw

times

5. Adjust high fire by removing
seal screw (See Figui_
48).

and tighten

to verify

regulator

the high

adjustment

6. To increase
outlet pressure,
turn the 3/32" socket
set screw clockwise.
To deci_ase
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_i of the nameplate
rating,
7. Replace
securely.

unless

the unit

is derated

high

adjustment

seal

8. Cycle the valve
setting.

several

times

for high
screw

to verify

and

altitude.
tighten

regulator

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.

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

the

Guide

The furnace input rate shall be checked by clocking the gas
flow rate (CFH) and multiplying
by the heating value
obtained from the local utility supplier for the gas being
delivered at the installed altitude.
Input rate changes can be
made by adjusting the manifold pressure (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
manifold pressure, then the orifices must be changed. LP
installations
will requite an orifice change.

IMPORTANT:
Reinstall the propane orifices to the same depth as the orifices
supplied with the equipment.
See Table 13 fbr help in selecting orifices if orifice change is
required.
Furnace input rate and temperature
rise should be
checked again after changing orifices to confirm the proper
rate for the altitude.
The vent len_h table on page 16 shows the required vent
lengths for installations
at various altitudes.
An optional
high altitude kit is available fbr installations
above 5000 feet
Installations
above 12,000 feet are not allowed).
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

Installer's

Guide
TABLE

Orifice
Twist Drill
Size If
Installed
At Sea
Level

ALTITUDE
and Orifice

ABOVE

Required

SEA LEVEL

At Other

Elevations

200C 3000 4000 5000 6000 7000 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
4,5
46
47
48
49

44
45
47
48
48
49

44
46
47
48
49
50

45
47
48
49
49
50

46
47
48
49
50
51

47
48
50
50
51
52

54
55
56
57
58

54
55
56
58
59

55
55
56
59
60

55
55
57
59
60

55
56
57
60
61

55
56
57
60
62

55
56
58
61
62

56
56
59
62
63

56
56
59
63
63

56
57
60
63
64

From National

ROTATE THE FRONT
COVER AS SHOWN

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

ALL SIDE FLANGES MUST
BE OUTSIDE OF THE BOX

Fuel Gas Code - Table F-4

White-Rodgers

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

36E

2nd Stage (HI)
Manifold
Pressure
Adjustment

3. Replace and tighten
securely.

the regulator

4. Cycle the valve several
setting.
1st Stage (LO)
Manifold
Pressure
Adjustment

Gas Valve On / Off
Toggle Switch

White-Rodgers 36G

Stage (HI)
Manifold
Pressure
Adjustment

Gas Valve On / Off
Toggle Switch
f. For the White-Rodgers

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.

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,
tui_ the regulator adjust screw counterclockwise.
Adjust regulator until pressure shown on manometer matches the pressure specified in Table 11.

8. Cycle the valve several
setting.
g. Turn offall electlical

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.

gas valve model 36G:

times to verify regulator

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

7. Replace high adjustment
tighten securely.
Stage (LO)
Manifold
Pressure
Adjustment

cover screw

power to the system

and energize

j. Using a leak detection solution or soap suds, check for
leaks at plug or pressure boss screw.
NOTE:
The manifold pressure must be referenced to the burner
box. The burner box pressure tap equalizes the gas valve
pressure regulator. Manifold pressure is checked by
installing a tee (field supplied) in the tubing, between the
tee coming from the burner box tube and the gas valve,
in addition to the regular gas valve pressure tap on the
outlet side of the gas valve. See Figure 47.

18-CD19D8-14

Installer's
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

assembled

is in place

Turn the main gas valve toggle switch (See Fig_i_s
48 & 49)
within the unit to the "OFF" position.
Turn the external
gas
valve to "ON". Purge the air fi'om the gas lines. After purging,
check all gas connections
for leaks with a soapy solution -DO NOT CHECK
WITHAN
OPEN
FLAME.
Allow 5 minutos

fbr 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.

18-CD19D8-14

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 fhn 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.

in place

is properly
door

"OFF"
sealed

Guide

Call for 2nd stage after 1st stage:
W2 themmstat
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 offperiod
(Field selectable at 60, 100, 140 or 180 seconds), then will be
de-energized
by the control module.
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.

Installer's

Guide

CONTROL AND SAFETY SWITCH ADJUSTMENTS
LIMIT SWITCH CHECK OUT
The limit switch is a safbty 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.
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 f_om the return air inlet. Refer
to Service Facts for additional
instructions.

BURNER BOX TEMPERATURE LIMIT DEVICE
All models are equipped with a manual reset temperature
limit located on the burner box. In case of excessive temperature, the limit will open and cause the circuit to open which
shuts off all flow of gas.
ABNORMAL CONDITIONS
1. EXCESSIVE COMBUSTION
PRESSURE (WIND IN
EXCESS OF 40 MP.H.) VENT OR FLUE BLOCKAGE
On a call fox' heat, the variable speed draft inducer must
first ramp up to speed and close the pressure switch
before the ignition sequence is allowed to begin. If the
pressure switch does not close, the motor will ramp up to
maximum speed and continue to operate there for about
1 minute.
After one minute the integrated
furnace control will turn
the motor offfor 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 Ihiled pressure switch.

NOTE TO INSTALLER
Review the following" warnings with the owner. Review contents of USER'S INFORMATION
MANUAL with the owner.

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 reclose
the pressure switch. If the pressure switch is not dosed
within 12 seconds or if the maximum speed of the motor
is reached, the draft inducer sends a Ihult signal to the
integ_'ated 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 befbre
attempting
to reestablish
operation in first stage.

AIRFLOW ADJUSTMENT
Check inlet and outlet air temperatures
to make sure they
are within the ranges specified on the furnace rating" nameplate. If the airflow needs to be increased or decreased, see
the wiring" diagram for information
on changing the speed of
the blower motor.

Disconnect power to the unit before removing the blower
door. 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.

iiii!ii!iiiiiI

INDOOR BLOWER TIMING
Heating:
The integrated
furnace control module controls the
indoor blower. The blower start is fixed at 45 seconds after
ignition. The FAN-OFF period is field selectable by dip
switches SW-2, #1 and #2 at 60, 100, 140, or 180 seconds.
The factory setting is 100 seconds.
WI-W2 stage delay (jumpered together) is field selectable by
dip switch SW-1, #1 and #2 at .5, 5, 10 or 15 minutes.
The
fhctory 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 offis field selectable by dip
switch SW-2, #3 (See wiring" diagi'am).
ROOM AIR THERMOSTAT
HEAT ANTICIPATOR ADJUSTMENT
Set the thermostat
heat anticipator
according to the current
flow measured,
or the settings fbund in the notes on the
furnace wixing diagram (found in the SERVICE FACTS or
inside the furnace casing).
INSTRUCTIONS TO THE OWNERS
In the event that electrical,
fuel, oi" 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.

LOSS OF FLAME
If loss of flame occurs during a heating cycle, or flame is
not present at the sensor, the flame control module will
close the gas valve. The flame control module will then
recycle the ignition sequence, then if ignition is not
achieved, it will shut off the gas valve and lock out the
system.
POWER FAILURE
If there is a power failure during a heating cycle, the
system will restart the ignition sequence automatically
when power is restored, if the thermostat
still calls for
heat.

4. GAS

SUPPLY

FAILURE

If loss of flame occurs during
a heating
cycle, the system
integrated
control module will recycle the ignition sequence,
then if ignition
is not achieved,
the integrated
control
module will shut offthe gas valve and lock out the system.
5. INDUCED
Please
refer
troubleshooting
6. CONDENSATE

DRAFT

BLOWER

FAILURE

to the variable
speed draft inducer
manual
for diagnostic
assistance.
DRAIN

BLOCKAGE

If the condensate
drain is blocked,
either by debris,
improper
draining,
or by freezing
condensate,
the
pressure
switch will sense the accumulation
of condensate in the furnace
drain pan. The unit will not operate
properly
until the condensate
drain
has been cleared,
and
the condensate
flows freely.

18-CD19D8-14

Installer's
INTEGRATED
2 Flashes ---

FURNACE

CONTROL

System Lockout (Retries

RED LED "ERROR"

Draft Pressure
3 Flashes ---

or Recycles

Guide

FLASH CODES

exceeded)

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
Continuous

Limit Switch
ignitor (Triac) fault, poor grounding

Reset caused by a blown fuse or internal error.

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 offfbr 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 I 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.

Green Status LED

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

*UX / DX Integrated Furnace Control

TABLE 14

INTEGRATED
GREEN

FURNACE

"STATUS"

CONTROL

LED FLASH

CODES

Flashing

Slow ---

Normal

- No call for Heat

Flashing

Fast ---

Normal

- Call for Heat

18-CD19D8-14

Fault Code Reset
The last 4 fault codes can be erased fl'om 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.

American Standard Inc.
6200 Troup Highway
Tyler, TX75707
Formore information contact
yourlecal dealer (distributor)

10/06

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 L0702197

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