TRANE Furnace/Heater, Gas Manual L0903224

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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1 8- CD1 9 D6- 3 1

Available in French Canadian (FC)

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Upflow/Horizontal and Downflow/Horizontal
Gas-Fired, DirectVent Condensing Furnaces
*UX1
*UX1
*UX1
*UX1
*UX1

B040A9241A
B060A9241A
B060A9361A
B080A9241A
B080A9421A

*UXIC080A9601A
*UX1 C100A9361A
*UX1 C100A9481A
*UXID100A9601A
*UXID120A9601A

*DX1 B040A9241A
*DX1 B060A9361A
*DX1 B080A9421A
*DXIC100A9481A
*DX1 D120A9601A

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

phases

of this installation

must

comply

with NATIONAL,

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

STATE AND LOCAL

CODES

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

*UX-1

*DX-1

DOWNFLOW
A!R
AIR

FLOW

UPFLOW
o

FLOW

UPFLOW/HORIZONTAL

DOWNFLOW/HORIZONTAL

20%

\
elIID

A341624P06

Installer's

Guide

SAFETY

SECTION

The following safety practices and precautions
must be
followed during the installation,
servicing, and operation
of this furnace.
1. Use only with the type of gas approved for this furnace. Refer to the furnace rating plate.
2. Install this furnace only in a location and position as
specified in "Location and Clearances"
(page 4), of
these instructions.
3. Provide adequate combustion and ventilation air to
the furnace space as specified in "Air for Combustion and Ventilation"
(pages 8-9), of these instructions.
4. Combustion products must be discharged outdoors.
Connect this furnace to an approved vent system
only, as specified in the "Venting" section (starting
on page 15), 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" (pages 31-33), of
these instructions.
6. Always install the furnace to operate within the
furnace's intended
temperature-rise
range with a
duct system which has an external static pressure
within the allowable range, as specified on the unit
rating plate. Airflow with temperature
rise for cfm
versus static is shown in the Service Facts accompanying this furnace.
7. When a furnace is installed so that supply ducts
carry air circulated by the furnace to areas outside
the space containing
the furnace, the return
air
shall also be handled by a duct(s) sealed to the furnace casing and terminating
outside the space containing the furnace.
8. A gas-fired furnace for installation
in a residential
garage must be installed as specified in "Location
and Clearances" section (page 4), of these instructions.
9. The furnace may be used for temporary heating of
buildings
or structures
under
construction
only
when the following conditions have been met:
a. The furnace venting system must be complete
and installed per manufacturers
instructions.
b. The furnace is controlled only by a room thermostat (no field jumpers).
c. The furnace return air duct must be complete
and sealed to the furnace and clean air filters
d.

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

f.
g.

The furnace return air temperature
range is
between 55 and 80 degrees Fahrenheit.
Clean the furnace, duct work, and components
upon substantial
completion of the construction
process, and verify furnace operating conditions
including ignition, input rate, temperature
rise
and venting, according to the manufacturer's
instructions.

10. This product must be gas piped by a Licensed
Plumber or Gas Fitter in the Commonwealth
of
Massachusetts.

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, ANSIZ223.1/NFPA 54 or the CAN/CGA
B149 Installation Codes and these instructions.
Determine that there is no blockage or restriction,
leakage, corrosion and other deficiencies which
could cause an unsafe condition.
3. As far as practical, close all building doors and
windows and all doors between the space in which
the appliance(s) connected to the venting system
are located and other deficiencies which could
cause an unsafe condition.
4. Close fireplace dampers.
5. Turn on clothes dryers and any appliance not connected to the venting system. Turn on any exhaust
fans, such as range hoods and bathroom exhausts,
so they are operating at maximum speed. Do not
operate a summer exhaust fan.
6. Follow the lighting instructions. Place the appliance being inspected into operation. Adjust the
thermostat so appliance is operating continuously.
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 B149.1 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.

1 8-CD1 9D6-31

Installer's
Safety signal words are used to designate a degree or
level of seriousness associated with a particular
hazard.
The signal words for safety markings are WARNING and
CAUTION.
a. WARNING indicates a potentially hazardous
situation which, if not avoided, could result in death or
serious injury.
b. CAUTION indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate injury. It is also used to alert against unsafe
practices and hazards involving only property damage.

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

GENERAL

INSTALLATION

INSTRUCTIONS

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

18-CD19D6-31

Guide

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

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

Abnormal Conditions
IFC Error Flash Code
Category IV furnaces operate with positive vent static
pressure
and with a flue loss less than 17 percent.
These conditions require special venting systems, which
must be gas tight and water tight. These Category IV
Direct Vent furnaces are approved for installation
in
Manufactured/
Mobile
housing
when
used
with
BAYMFGH100A.

Installer's

Guide
LOCATION AND CLEARANCES

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

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

EXPLOSION HAZARD!
PROPANE GAS IS HEAVIER THAN AIR AND MAY
COLLECT IN ANY LOW AREAS OR CONFINED
SPACES. IN ADDITION, ODORANT FADE MAY MAKE
THE GAS UNDETECTABLE EXCEPT WITH A WARNING DEVICE. IF THE GAS FURNACE IS INSTALLED
IN A BASEMENT, AN EXCAVATED AREA OR A
CONFINED SPACE, IT IS STRONGLY RECOMMENDED TO CONTACT A GAS SUPPLIER TO INSTALL A GAS DETECTING WARNING DEVICE IN
CASE OF A GAS LEAK.
NOTE: The manufacturer of your furnace does NOTtest
any detectors and makes no representations regarding
any brand or type of detector.

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

the minimums

shown

in the

3. Is there sufficient space for servicing the furnace
and other equipment?
A minimum
of 24 inches
front accessibility to the furnace must be provided.
Any access door or panel must permit removal of
the largest component.
4. Are there at least 3 inches of clearance between the

7.
8.

furnace front panel and any closed panel or door
provided?
Are the vent pipe and combustion
air inlet pipe
within vent table lengths? Will the pipes remain unobstructed?
Allow sufficient height in supply plenum above or
below the furnace to provide for cooling coil installation if the cooling coil is not installed at the time of
this furnace installation.
A furnace shall be installed so electrical components
are protected from water.
If the furnace is installed in a residential
garage,
it must be installed so that the burners and the ignition source are located not less than 18 inches (46
cm) above the floor and the furnace must be located
or protected
to avoid physical damage from vehicles.

IMPORTANT:
The furnace must be installed level The only allowable
variation would be slightly to the left and/or forward in
upflow installations or slightly toward the front in horizontal
installations. This is necessary for proper condensate drainage.

18-CD19D6-31

Installer's

Guide
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18-CD19D6-31

Installer's

Guide

UPFLOW INSTALLATION
Standoffs and screws (See Figure 1) are included with
the eased coils for attachment
to the furnace. There are
clearance alignment
holes near the bottom of the coil
wrapper. Drill screws are used to engage the furnace
top flanges. The standoff is inserted into the cabinet
alignment hole. The drill screws are inserted through
the standoffs then screwed into the furnace flange.

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The coil is always placed downstream

of the furnace

air-

flow.

STANDOFFS

(4)

DRILL

SCREWS

(4)

FOR VERTICAL
INSTALLATIONS:

HORIZONTAL INSTALLATION
The coil and furnace must be fully supported when used
in the horizontal
position. It is always recommended
that an auxiliary drain pan be installed under a horizontally installed evaporator coil or 90% gas furnace. Connect the auxiliary drain line to a separate drain line (no
trap is needed in this line).
Three brackets (with screws) are included with downflow furnaces for installation
to stabilize and secure the
furnace and TXC cased
tion. See Figure 4.
IMPORTANT:

coil in the

horizontal

posi-

The 2/4TXC cased coil must be placed downstream
of the
furnace.
In horizontal
installations,
the apex of the coil
may point either toward or away from the furnace.
See
the 2/4TXC coil Installer's
Guide for more details.
(BOTH

SIDES)

STANDOFFS
(BOTH

DOWNFLOW

SIDES)

INSTALLATIONS

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

FLANGE

(BENT

CABINET_SIDE

CABINET

PLENUM
SULATION
DUCT ZLOOCOMBL'STFBI,N
_

SUB*BASE

TABLE 1
RETURN
DUCT WIDTH

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

PLENUM OPENING
C ....
D"

17-1/2"

16-1/4"

16-5/8"

20-1/8"

15-5/8"

19-3/8"

21"

19-3/4"

20-1/8"

19-1/8"

19-3/8"

24-1/2"

23-1/4"

23-5/8"

20-1/8"

22-5/8"

19-3/8"

18-CD19D6-31

ONLY

SIDE

SUBBASE CROSS SECTION

CABINET
WIDTH

FOR DOWNFLOW
IN HORIZONTAL

UP)

COIL CONNECTION

DOWNFLOW

FLANGE

UP)

SUB-BASE

CASED

BRACKET
FURNACE

SUB-BASE

(BENT

The cased coil is secured to the furnace and both the
furnace and the cased coil must be properly supported.
The brackets mount using the rear screws on the coil
case and use the screws provided to secure the bracket
to the furnace. The remaining bracket is placed as close
to center as possible (horizontally) between the coil case
front and the furnace bottom channel (for downflow/
horizontal furnace). Use four of the screws provided to
secure the bracket. The upflow furnace, converted to
horizontal, aligns and attaches the TXC coil as in Figure 1. However, the coil requires additional support.

The furnace may be installed in an attic or crawl space
in the horizontal position by placing the furnace on the
left side (as viewed from the front in the vertical position). The horizontal
furnace installation
in an attic
should be on a service platform large enough to allow
for proper clearances on all sides and service access to
the front of the furnace (See Figure 4 & Clearance
Table). Line contact is only permissible
between lines
formed by intersections
of the top and two sides of the
furnace casing and building joists, studs, or framing.

Installer's

Guide

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

UPFLOW/
HORIZONTAL
SHOWN

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

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

HE;R
WATER

_DRYER
CLOTHES

UNCONFINED

AIR FOR COMBUSTION

AND VENTILATION

If these furnaces are installed in a nondirect vent capacity then the adequate flow of combustion and ventilating air must not be obstructed
from reaching the furnace. Air openings provided for combustion air must be
kept free of obstructions
which restrict the flow of air.
Airflow restrictions
affect the efficiency and safe operation of the furnace. Keep this in mind should you
choose to remodel or change the area which contains
your furnace. Furnaces must have a free flow of air for
proper performance.

The use of indoor air for most applications is acceptable,
unless there is the presence
of corrosive
chemicals
or contamination.
Certain types of installation
will
require
the use of outside air for combustion.
The following types of installations
will require
use of
OUTDOOR AIR for combustion, due to chemical exposures:
* Commercial buildings
* Buildings with indoor pools
* Furnaces installed in "confined" laundry rooms
* Furnaces installed in "confined" hobby or craft rooms
* Furnaces installed near chemical storage areas.
Exposure to the following substances in the combustion
air supply will also require OUTDOOR AIR for combustion:
* Permanent
wave solutions
* Chlorinated waxes and cleaners
* Chlorine based swimming pool chemicals
* Water softening chemicals
* Deicing salts or chemicals
* Carbon Tetrachloride
* Halogen type refrigerants
* Cleaning solvents (such as perehloroethylene)
* Printing inks, paint removers, varnish, etc.
* Hydrochloric acid
* Cements and glues
* Antistatic fabric softeners for clothes dryers
* Masonry acid washing materials
Furnace locations may be in a "confined
space" or an
"unconfined
space".
Unconfined space is defined in Figure 5. These spaces
may have adequate air by infiltration to provide air for
combustion
and ventilation.
Buildings
with
tight
construction
(for example, weather
stripping,
heavily
insulated, caulked, vapor barrier, etc.), may need additional air to be provided as described for confined space.
Confined spaces are installations
with less than 50 cu.
ft. of space per 1000 BTU/hr input from all equipment
installed. Air for combustion
and ventilation
requirements can be supplied from inside the building as in
Figure 8 or from the outdoors, as in Figure 9.

18-CD1 9D6-31

Installer's
_F

AREA SPACE
IN SQUARE
FEET
OR MINIMUM
UNCONFINED
INSTALLATIONS

FURNACE
MAXIMUM BTUH
INPUT RATING

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

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

375
500
625
875

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

®
CONFINED
AIR FROM

Furnace
Maximum
BTUH/INPUT
Rating
60,000
80,000
100,000
120,000

Air
From
Inside
1oo
1oo
1oo
120

SPACE
INSIDE BUILDING

SPACE

PERMANENT
OPENINGS

®
CONFINED
AIR FROM

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

SPACE
OUTDOORS

CONFINED
SPACE

_///////////////////////L

OUTLET

OUTDOOR
AIR

DUCTS

INLET

_/z'/////////////J///////z

CONFINED SPACE
AIR FROM VENTILATED ATTIC/CRAWL SPACE
TO OUTDOORS

CONFINEDSPACE

ALTERNATE
INLET AIR

Air From Outside
CONFINED
Vertical
Duct
15
20
25
30

Horizontal
Duct

SPACE

AIR FROM VENTILATED

ATTIC

30
40
50
60
•"_

SPACECONFINED

18-CD19D6-31

Guide

OUTLET

lAIR INLET
AIR DUCT

Installer's

Guide

DUCT CONNECTIONS
Air duct systems should be installed in accordance with
standards
for air conditioning
systems, National Fire
Protection Association Pamphlet
No. 90. They should
be sized in accordance with ACCA Manual D or whichever is applicable.
Central furnaces, when used in connection with cooling
units, shall be installed in parallel or on the upstream
side of the cooling coil to avoid condensation
in the heat
exchanger. With a parallel flow arrangement,
the dampers or other means used to control flow of air shall be
adequate to prevent chilled air from entering the furnace, and if manually operated, must be equipped with
means to prevent operation of either unit unless the
damper is in full heat or cool position.
On any job, flexible connections of nonflammable
material may be used for return air and discharge connections
to prevent transmission
of vibration. Though these units
have been specifically designed for quiet, vibration free
operation, air ducts can act as sounding boards and could,
if poorly installed, amplify the slightest vibration to the
annoyance level.
When the furnace is located in a utility room adjacent
to the living area, the system should be carefully designed with returns
to minimize noise transmission
through the return air grille. Although these furnaces
are designed with large blowers operating at moderate
speeds, any blower moving a high volume of air will
produce audible
noise which could be objectionable
when the unit is located very close to a living area. It is
often advisable to route the return air ducts under the
floor or through the attic. Such design permits the installation
of air return
remote from the living area
(i.e. central hall).
When the furnace is installed so that the supply ducts
carry air circulated by the furnace to areas outside the
space containing the furnace, the return air shall also
be handled by a duct(s) sealed to the furnace and terminating outside the space containing the furnace.
RETURN AIR DUCT SYSTEMS
Where there is no complete
the return connection
must

return duct system,
be run full size from

the furnace to a location outside the utility room,
basement,
attic, or crawl space.
DoNor
install return air through the back of the furnace cabinet
Do Not install return air through the side of the furnace cabinet on horizontal applications.

NOTE:
Minimum return air temperature is 55 ° F.

All return air duct systems
tion of return air filters.

should provide

for installa-

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

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

18-CD1 9D6-31

Installer's

Guide

RETURN AIR FILTERS
(Filters not supplied with unit)
TYPICAL UPFLOW RETURN
AIR FILTER INSTALLATIONS
These furnaces require high velocity type air filters.
The filters may be located within the furnace blower
compartment
for UPFLOW furnaces in either a BOTTOM or SIDE (left side or right side) return air inlet.
TABLE 3
MODELS
NUMBERS

CABINET
WIDTH

*UXl B040A9241A
*UXl B060A9241A
*UX1B060A9361A
*UXl B080A9241A
*UXl B080A9421A

17-1/2"

*UXlC080A9601A
*UXlC100A9361A
*UXlC100A9481A

21"

*UXl D100A9601A
*UX1D120A9601A

24-1/2"

FILTER
QTY & SIZE

1 - 17"X

25"X

1 - 20" X 25" X 1"

1 -24"X

25"X

*First letter may be "A" or "T"
*** NOTE - On 5 ton airflow models, if the airflow requirement
exceeds 1800 CFM, these models will require filters on both sides;
OR 1 side and the bottom; OR just the bottom.

Blower Door Hinge and Bottom Filter Rack Installation
FILTER
RACK

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

The upflow furnace blower door has a hinge at the bottom which allows the door to tilt forward for filter replacement

without

®
LOCATING
PROVIDED FOR
NOTCHES
SIDE
RETURN
CUTOUT

the door being removed

AUTOMATIC
ADJUSTMENT

(See Figure

UPFLOW FURNACE ONLY
*"_

b
RETAINING
PIN
(Both Sides)

Optional Filter Rack Accessory Kit
_.

*SEE OUTLINEDRAWING

BA YRACK960A

I///FORCUT SIDE
OUT
FILTER

OPTIONAL BOTTOM FILTER RACK INSTALLATION
With the filter removed, the filter rack is compressed
and then inserted into the bottom of the furnace. The
of Furnace

11). The optional furnace filter in the bottom or side
configuration can be removed by simply turning the two
latches on the blower door and tilting the door forward.
The filter rails are spring loaded for automatic
adjustment to allow standard
size, locally obtainable replacement filters. The filter rack itself slides to adjust to the
required width needed for bottom or side return (See
Figure 12).

18-CD19D6-31

-'_

RAILS

retaining screw/ pin on each side inserts into engagement holes at the bottom of the furnace cabinet side.
OPTIONAL FILTER RACK INSTALLATION FOR SIDE
RETURN AIR ON UPFLOW FURNACES (Left or Right)
NOTE:
The optional filter rack installation
right side return on the following
A9601.

is not allowed for
model: *UXICO80-

Installer's

Guide

BOTTOM ENGAGEMENT
Filter Rack
Retaining
Screw/Pin

Furnace
Cabinet
Side

Engagement
For Filter
Installation
Bottom

Filter
Rack

)

Hole
Rack
With

Return

Bottom Panel

%...,

ENGAGEMENT
HOLE DETAIL

If side
should
a.
b.
c.

air return is desired, the following instructions
be used:
Open or remove the blower door.
Leave the bottom panel in place.
After the side cutout is made following the directions in the "Return Air Duct Connections" section on pages 8 and 9, compress the optional illter rack and reinstall in the side of the furnace.
Confirm that the upper retaining pin!screw locks
into the engagement
hole in the blower deck and
the lower pin/screw rests against the side of the
bottom panel. See Figures 14 - 18.
d. Install the optional furnace filter on the side insetting the chamfer end first.
RETURN AIR FILTERS FOR UPFLOW FURNACE IN
HORIZONTAL CONFIGURATION
When the Upflow Furnace is installed in the horizontal
configuration,
the return air filters must be installed
exterior to the cabinet. Remote filter grilles may be
used for homeowner convenience or the filters may be
installed in the duct work upstream of the furnace. See
Figure 20.
Filter
Furnace
Cabinet
Side

Rack

Hole

For Filter Rack
installation With
Side Return

BLOWER
DECK

(Typical both sides
and blower deck)

Engagement

Furnace
Blower
Deck

_./

Furnace
Cabinet-,,,]_
Side
_W___r _k

_Filter

Retaining
Screw/Pin

Rack
Assembly

SIDE
CUTOUT

RETAINING
(B° PIN

1II
IU

f/
_/

FILTER
RACK

BOTTOM
PANEL
INSTALLED

RAILS

Typical Upflow Left Side Return Filter Rack Installation

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

18-CD1 9D6-31

Installer's

Guide

TYPICAL RETURN AIR FILTER INSTALLATION IN
UPFLOW MODEL IN HORIZONTAL POSITION
ALTERNATE UPFLOW FILTER CLIP/
BRACKET INSTALLATION
1. Determine
the location to be used.
Typical Upflow Right Side Return Filter Rack Installation

The

furnace

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

CHAMFER
END OF
FILTER
INTO
RACK

GOES
FILTER
FIRST

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

of the

18-CD19D6-31

furnace

front

channel

for door replace-

Door Hinge Removed

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

Installer's

Guide

TYPICAL DOWNFLOW FURNACE RETURN
AIR FILTER INSTALLATIONS
Two high velocity type air filters are required for each
downflow furnace. Downflow furnace filters must be located outside the furnace cabinet. Typical installations
are shown in Figure 23. Tables 5 and 6 provide information for installation
of the filter retaining
brackets
shipped with downflow furnaces.

/
/

TABLE 4
MODELS
NUMBERS

ALTERNATE FILTER
CLIPS LOCATION

iiiiiiiiiiii

*DX1 B040A9241A
*DX1B060A9361A
*DX1 B080A9421A

RETURN AIR

UNIT
SIZE

BOTTOM

SIDE

17-1/2"

DO NOT CUT

21"

DO NOT CUT

CUT ON LINE

24-1/2"

DO NOT CUT

CUT ON LINE

CABINET
WIDTH

FILTER
QTY & SIZE

17-1/2"

2 - 14"X

20"X

*DX1C100A9481A

21"

2 - 16"X

20"X

*DX1D120A9601A

24-1/2"

2 - 16"X

20"X

*First

letter may be "A" or "T"

TABLE 5
LOCATING FILTER RETAINER BRACKETS IN DUCTWORK
DIMENSION
"A ....

DIMENSION
B"

FILTER
BRACKET
LOCATION*

16-1/4"

15"

14"

14-3/8"

19-3/4"

19-1/2"

14"

13-1/8"

23-1/4"

22"

14"

13-5/8"

CABINET
WIDTH

RETURN
DUCT
WIDTH

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

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

THE FURNACE TO THE

Airflow

Joow.F,OW,
DOWNFLOW

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

FURNACE

SURFACE

HORIZONTAL
CLOSET

HORIZONTAL
ALCOVE / ATTIC

SIDES

BACK

TOP

FRONT

18"

VENT

NOTE: CLEARANCE
14

VERTICAL
CLOSET

REQUIRED AT TOP OF PLENUM IS 1"
18-CD19D6-31

Installer's
GENERAL

VENTING

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

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

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

18-CD19D6-31

Guide

and

drawings

Installer's

Guide

PVC VENT FITTING MATERIAL
These fittings are available
from
Distributors.

your

Gas

2. After checking pipe and socket for proper fit, wipe
socket and pipe with cleaner-primer.
Apply a liberal
coat of primer to inside surface of socket and outside of pipe.
DO NOT ALLOW PRIMER TO DRY BEFORE APPLYING CEMENT.

Furnace

Straight Pipe Sections, Couplings, 45 ° Elbows, 60 ° Elbows, 90 ° Elbows, Vent or Sanitary Tee, or other necessary fittings may be 2", 2½", 3", or 4" diameter. The allowable materials are shown in Table 7.
VENT FITTING MATERIAL - PLASTIC

3. Apply a thin coat of cement evenly in the socket.
Quickly apply a heavy coat of cement to the pipe
end and insert pipe into fitting with a slight twisting
movement until it bottoms out.
4. Hold the pipe in the fitting for 30 seconds to prevent tapered socket from pushing the pipe out of
the fitting.
5. Wipe all excess cement from the joint with a rag.
Allow 15 minutes before handling. Cure time varies
according to fit, temperature
and humidity.

Gas and liquid tight single wall vent fittings, designed
for resistance
to corrosive flue condensate,
MUST be
used throughout.
Listed in Table 8 & 9 are 2", 2½", 3", and 4" size fittings
that meet these requirements.
The materials listed are
various grades of PVC and ABS plastic.
PIPE JOINTS: All joints must be fastened and sealed to
prevent escape of combustion products into the building.

IMPORTANT:

NOTE:
It is recommended
that the first joints from the furnace
be connected and sealed with high temperature RTV.
This will enable the pipes to be removed later without
cutting.
Be sure to properly support these joints.

BONDING OF PVC
Commercially available solvent cement must be used to
join the pipe and fittings. Follow instructions
on the
container carefully.
Procedure for Cementing Joints:
1. Cut pipe square, remove ragged edges and burrs.
Chamfer end of pipe, then clean fitting socket and
pipe joint area of all dirt, grease, moisture or chips.

Products installed in Canada must use vent systems
that are certified to the Standard for Type BH Gas Venting Systems (ULC $636) for Class II-A venting systems
(up to 65°C). Components of the vent system must not
be interchanged with other vent systems or unlisted
pipe or fittings. Plastic components, specified primers, and glues must be from a single system manufacturer and not intermixed
with other system
manufacturer's vent system parts. In addition, the first
three feet of the vent pipe must be visible for inspection.

TABLE 7
PLASTIC

PIPE DESIGNATIONS

PVC
ASTM STANDARD
F891
D2665
D1785
D2241

PIPE TYPE
CELLULAR
DWV

ALLOWABLE

CORE
PIPE

SCH 40, 80, 120
SDR

TEMPERATURE
"158

SERIES

MARKING
ASTM

F891

*'158

ASTM

D2665

*'158

ASTM

D1785

*'158

ASTM

D2241

CPVC
ASTM STANDARD
D2846
F441
F442

PIPE TYPE
CPVC
SCH
SDR

ALLOWABLE

TEMPERATURE
*'212

MARKING
ASTM

D2846

40, 80

*'212

ASTM

F441

SERIES

*'212

ASTM

F442

ABS
ASTM STANDARD

PIPE TYPE

D2661

SCH 40 DWV

F628

*
**

- Allowable
- Allowable

*** - Allowable

SCH 40 DWV

CELLULAR

ALLOWABLE

TEMPERATURE
**'180

CORE

**'180

MARKING
ASTM

D2661

ASTM

temperatures
temperatures

based on classifications
based on classifications

covered in ASTM D4396 [Deflection Temps Under Load (264 PSI)]
covered in ASTM D1784 [Deflection Temps Under Load (264 PSI)]

temperatures

based on classifications

covered

in ASTM

D3965 [Deflection

F628

Temps Under Load (264 PSI)]

18-CD19D6-31

Installer's

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

VENT AND INLET AIR CONNECTIONS
Seal VENT
with RTV

PIPE

sealant

NOTE:
To ensure proper operation at the vent lengths indicated, the combustion
air inlet and vent terminals
should be in the same pressure zone. Terminating the
vent and inlet in different pressure zones will change
the maximum vent lengths and may cause nuisance
tripping of the pressure
switch(es).
The amount of
change can not be predicted. The selection of the inlet
and outlet terminal locations are the responsibility
of
the designer/installer,
ff the installer chooses separate
pressure zones for the terminals, the combustion air
inlet termination must be in the higher (more positive)
pressure zone.

Front of Furnace

Seal INLET AIR PIPE
with RTV sealant

NOTE:
Follow venting
cement.

instructions

carefully

when

Guide

using PVC

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

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

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

2-1/2" PIPE
& FITTINGS

*UXIB040A9241A

100

130

*UXIB060A9241A

100

130

*UXIB060A9361A

100

*UXIB080A9241A

*UXIB080A9421A

*UX1C080A9601A

2" PIPE
& FITTINGS

TOTAL

3" PIPE
& FITTINGS

130

100

130

100

130

NOT ALLOWED

100

130

NOT ALLOWED

130

*UX1C100A9361A

NOT ALLOWED

100

130

NOT ALLOWED

130

*UX1C100A9481A

NOT ALLOWED

100

130

NOT ALLOWED

130

*UXID100A9601A

NOT ALLOWED

100

130

NOT ALLOWED

130

*UXID120A9601A

NOT ALLOWED

130

NOT ALLOWED

130

NOTES:
* - First letter may be "A" or "T"
1. The INLET AIR of one pipe systems
require the installation
horizontal
or vertical
straight pipe section connected
before
2. DO NOT MIX PIPE DIAMETERS
IN THE SAME LENGTH
If different
inlet and vent pipe sizes are used, the vent pipe
The inlet pipe can be of a larger diameter,
but never smaller
3. MAXIMUM
PIPE LENGTHS
MUST
NOT BE EXCEEDED!

4" PIPE
& FITTINGS

-MAXIMUM

2-1/2" PIPE
& FITTINGS

MODEL

3" PIPE
& FITTINGS

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

of a 90 ° elbow (to prevent dust and debris from falling straight
into thefurnace)
and a 2 foot
or after the elbow.
OF PIPE OUTSIDE
THE FURNACE
CABINET
(Except adapters
at the top of the furnace).
must adhere te the maximum
length limit shown
in the table above (See Note 7 below for exception).
than the vent pipe.
THE LENGTH
SHOWN
IS NOT A COMBINED
TOTAL, IT IS THE MAXIMUM
LENGTH
OF EACH

(Vent or Inlet air pipes in two pipe systems).
4. One standard
radius 90 ° elbow is equivalent
to 12' of 4" pipe; one SHORT
radius 90 ° elbow is equivalent
to 10'
equivalent
to 6' of 3" pipe. One SHORT/LONG
radius 90 ° elbow is equivalent
to 71/2' of 21/2 pipe, & 5' of 2" pipe.
5. The termination
tee or bend must be included
in the total number of elbows. If the BAYVENT100
termination
kit
There is zero equivalent
length for the BAYVENT200.
6. Pipe adapters
are field supplied.
7.4" pipe may be reduced
to 3" for termination
with BAYAIR30AVENTA
or BAYVENT200
without
additional
length

18-CD19D6-31

4" PIPE
& FITTINGS

of 3" pipe and one LONG radius elbow is
Two 45 ° elbows equal one 90°elbow.
is used, the equivalent
length of pipe is 5 feet.

restriction.

Installer's

Guide
DOWNFLOW/HORIZONTAL VENTING TABLE
TABLE 9

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

MODEL

2-1/2" PIPE
& FITTINGS

3" PIPE
& FITTINGS

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

4" PIPE
& FITTINGS

2" PIPE
& FITTINGS

2-1/2" PIPE
& FITTINGS

3" PIPE
& FITTINGS

4" PIPE
& FITTINGS

*DX1 B040A9241A

100

130

*DXl

B060A9361A

100

130

*DXl

B080A9421A

100

130

*DXlC100A9481A

NOT ALLOWED

100

130

NOT ALLOWED

130

*DX1D120A9601A

NOT ALLOWED

130

NOT ALLOWED

130

NOTES:
* - First letter may be "A" or "T"
1. The INLET AIR of one pipe systems require the installation of a 90 ° elbow (to prevent dust and debris from falling straight into the furnace) and a 2 foot
horizontal or vertical straight pipe section connected before or after the elbow.
2. DO NOT MIX PIPE DIAMETERS IN THE SAME LENGTH OF PIPE OUTSIDE THE FURNACE CABINET (Except adapters at the top of the furnace).
If different inlet and vent pipe sizes are used, the vent pipe must adhere to the maximum length limit shown in the table above (See Note 7 below for exception).
The inlet pipe can be of a larger diameter, but never smaller than the vent pipe.
3. MAXIMUM PIPE LENGTHS MUST NOT BE EXCEEDED! THE LENGTH SHOWN IS NOT A COMBINED TOTAL, IT IS THE MAXIMUM LENGTH OF EACH
(Vent or Inlet air pipes in two pipe systems).
4. One standard radius 90 ° elbow is equivalent to 12' of 4" pipe; one SHORT radius 90 ° elbow is equivalent to 10' of 3" pipe and one LONG radius elbow is
equivalent to 6' of 3" pipe. One SHORT/LONG radius 90 ° elbow is equivalent to 7Y2' of 2Y2" pipe, & 5' of 2" pipe. Two 45 ° elbows equal one 90°elbow.
5. The termination tee or bend must be included in the total number of elbows. If the BAYVENTIO0 termination kit is used, the equivalent length of pipe is 5 feet.
There is zero equivalent length for the BAYVENT200.
6. Pipe adapters are field supplied.
7.4" pipe may be reduced to 3" for termination with BAYAIR3OAVENTA or BAYVENT200 without additional length restriction.

UPFLOW

SINGLE PIPE VENTING

FURNACE

DOWN FLOW

Air Inlet

I--B--I

FURNACE

A (0-2') or greater
B
(0-2')or
greater
A+B
= 2' minimum

___

....

Air lnle/t

_ _ _entu_snldY.

A = 2' minimum

_K_

VENTTERMINAL

(_)

AIR SUPPLY

INLET

[]

AREAWHERETERMINALISNOTPERMITTED

18-CD19D6-31

Installer's

Guide

Direct Vent Terminal Clearances

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

Clearance to window or door that may be opened

Clearance to permanently

Canadian Installations

US Installations

12 inches (30 cm)

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

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

100,000 Btuh (30 kw)

Btuh (15 kw)

closed window

Vertical clearance to ventilated soffit located above the
D=

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

Clearance to unventilated soffit

Clearance to outside corner

Clearance to inside corner

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

Clearance to service regulator vent outlet

3 feet (91 cm) with a height 15 feet (4,5 m) above the
meter/regulator assembly
3 feet (91 cm)
6 inches (15 cm) for appliances

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

Clearance to a mechanical air supply inlet

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

Clearance under veranda, porch, deck, or balcony

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

inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/<
100,000 Btuh (30 kw), 35 inches (91 cm) for appliances >
100,000 Btuh (30 kw)
6 feet (1,83m)

6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 9
inches (23 cm) for appliances > 10,000 Btuh (3 kw) and =/<
50,000 Btuh (15 kw), 12 inches (30 cm) for appliances > 50,000
Btuh (15 kw)
3 feet (91 cm) above if within 10 feet (3m) horizontally

7 feet (2,13 m) t
"12 inches (30 cm) _:

Notes:
1.
2.

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

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

Non-Direct Vent Terminal Clearances
Canadian
A=

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

Clearance to window or door that may be opened

Clearance to permanently closed window

Vertical clearance to ventilated soffit located above the
terminal within a horizontal distance of 2 feet (61 cm)
from the center line of the terminal

Clearance to unventilated soffit

Clearance to outside corner

Clearance to inside corner

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

assembly

Clearance to service regulator vent outlet

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

Clearance to a mechanical air supply inlet

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

Clearance under veranda, porch, deck, or balcony

12 inches

Installations

(30

US Installations

12 inches (30 cm)

cm)

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

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

3 feet (91 cm) with a height 15 feet (4,5 m) above the
meter/regulator assembly
3 feet

(91 cm)

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

(1,83m)

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

3 feet

(91

cm)

7 feet (2.13 m) 1

above

if within

7 feet

10 feet

(2,13

(3m)

horizontally

"12 inches (30 cm) _:

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

18-CD19D6-31

Installer's

Guide

ELBOW AND TEE MUST
BE AS CLOSE TOGETHER

AS POSSIBLE

"_
i.=
ir

MAX 4

POSSIBLE CONFIGURATIONS FOR TWO PIPE VENTING SYSTEMS

HORIZONTAL
NOTE:
Vent

VENTING

termination

kit

BAYAIR3OAVENTA

BAYVENT2OOB may be used instead of the horizontal
and vertical termination options shown in the following figures.

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

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

BAYVENT2OOB

"" ""

HORIZONTAL VENTING THROUGH WALL
These furnaces may be installed as direct vent (as
shipped)
or as nondirect
vent. Installation
must
conform to national,
state, and local codes.

The vent & inlet terminals must be located at least 12"
minimum above normally expected snow accumulation
level.
Avoid areas where staining or condensate drippage may
be a problem.
Location of the vent/wind
terminal should be chosen to
meet the requirements
of Figure
non-direct vent applications.

26 for either

direct or

18-CD19D6-31

Installer's
PITCH - Venting through the wall must maintain 1/4"
per foot pitched
upward to insure that condensate
drains back to the furnace.
FLUE GAS DEGRADATION
- The moisture content

Guide

COUPLING
( PLASTIC
VENTING

IN. MII

of the flue gas may have a detrimental
effect on some
building materials.
This can be avoided by using the
roof or chimney venting option. When wall venting is
used on any surface that can be affected by this moisture, it is recommended
that a corrosion resistant
shield (24 inches square) be used behind the vent termi-

[OPTIONAL)

( 0 JOIP

12" MIN. ABOVE

1" CLEARANCE
(AIR

SPACE )

NORMALLY
EXPECTED

_.__ _

snowACCUMULATION

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

PVC WALL
MOUNT

( PLASTIC
VENTING )

6 IN. MIN.

BAYAIR30AVENTA
(Sidewall)

FLANGE

(OPTIONAL)

APPROVED

TERMINATION

nal. This shield can be wood, plastic, sheet metal, etc.
Also, silicone caulk all cracks, seams and joints within 3
feet of the vent terminal.
COMBUSTIBLE MATERIAL WALL
A minimum
clearance of 1" to combustible
materials
must be maintained
when using single wall stainless
steel venting. See Figure 30 above.
Shield material to be a minimum of 24 gauge stainless
or aluminized
sheet metal. Minimum
dimensions
are
12"x12". Shield must be fastened to both inside and outside of wall. Use screws or anchor type fasteners
to the outside or inside wall surfaces.
NONCOMBUSTIBLE MATERIAL WALL

suited

The hole through the wall must be large enough to
maintain pitch of vent and properly seal.
Use cement mortar seal on inside and outside of wall.
See Figure

12" MIN. ABOVE
NORMALLY EXPECTED

INSIDE & I,_

SNOW ACCUMULATION

OUTSIDE

VENTING THROUGH NON-COMBUSTIBLE WALLS
Pitch- 114InchPerFt.

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

;T
o_"

31.

JE PIPE,

.,'F.>---,o,a,r....

n....

coupu_a
pL_srlc w_r5

Tc
40"

UPFLOVV

OR DOtNNFLOW

" FURNACE

HORIZONIAL ANDVERIICAL

18-CD19D6-31

Installer's

Guide

SEE VENTING

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

TABLE

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

USE ONLY
APPROVED
TERMINATIO_

COMBUSTION
AIR INLET

1
40" UPFLOW
DOWNFLOW

n
_X

OR
MODELS

FIRST
UPWARD
SUPPORT
PITCH --SHOULD
1/4" PERBEFOOT
AS
CLOSE TO FURNACE CONNECTION
AS POSSIBLE.

NOTE:

ANY

THROUGH
MUST

FITTINGS

OUTSIDE
WALL

PASSING

AN UNHEATED

SPACE

BE INSULATED.

45° ELBOW

TEE

OUTSIDE
WALL

STUB CUT AT
45 _ANGLE
STRAP

AIR
COMBUSTION

(FIELD
VENT

SUPPLIED)

RAIN

CAP

COMBUSTION

AIR

BA YAIR3OAVENTA

(FIELD

BA YVENT2OOB

WALL CAVITIES

18-CD19D6-31

Installer's
DOWNWARD
VENTING
@
Furnace may be in vertical or horizontalconfiguration.
f
f

DOWNWARD VENT
LENGTH IS LIMITED
TO A MAXIMUM OF 15
EQUIVALENT FEET.

40 Inch

Guide

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

__ Upflow or
Downflow
Furnace
24" MAX.

Slope

1/4" per ft.

VENT_N_

12' ± l' __N

9"r_,..
MAINIAIRED
ABOVE HIGHEST
-INCH CL_a'4ANCE
MuST BE
SNOW
LEVEL

_12

ANnCIPATED
24

BE 12" ± l"

VENTING THROUGH THE ROOF

VENTING ROUTED THROUGH A MASONRY CHIMNEY
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 and fitting accessories are to be supplied
locally.

I_OOF,

VENT

MAINTAIN
12 IN.
18 IN. FOR CANADA)
ABOVE HIGHEST
ANTICIPATED
SNOW
LEVEL. MAXIMUM
OF
24 IN, ABOVE 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)
NOTE:
No vent cap as shown in Figure 35 is the preferred
method for vertical vent termination in extremely cold
climates.
In extreme climate conditions, insulate the exposed
pipe above the roof line with Armaflex type insulation.

ABOVE

/
COMBUSTION

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

NOTES:
A) Condensate trap for vent pipe must be a minimum
of 6 inches in height.
B) Condensate trap for vent and inlet pipe must be
connected into a condensate drain pump; an open
or vented drain; or it can be connected to the outlet
hose of the furnace's condensate trap. Outdoor
draining of the furnace and coil condensate is permissible if allowed by local codes. Caution should
be taken to prevent drains from freezing or causing
slippery conditions that could lead to personal injury. Excessive draining of condensate may cause
saturated ground conditions that may result in
damage to plants.
C) The condensate trap should be primed at initial
start up prior to heating season operation.

INCHES

DISTANCE FROM TOP
OF VENT TO BO]TOM
OF AIR INLET MUST

6" Min,

BAYAIR30AVENTA

MAINTAIN

VENT
REMOVE

RIBS

12 IN,

(18 IN. FOR CANADA)
MINIMUM CLEARANCE

FROM CAP

COMBUSTION
AIR

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

ROOFBOOT

))

(FIELD SUPPLIED)

ELBOW
(FIELD SUPPLIED)

COMBUSTION

18-CD19D6-31

Installer's

Guide

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

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

[

SUPPORT
FLANGE

_='-_,,.,=
,_RESTOP)

FLOOR _

| ...........

FLANGE

• "

FLUE PIPE
SUPPORT __
CLEARANCE

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

VENTING THROUGH FLOOR

GALVANIZED FIRESTOP SHOULD
BE FABRICATED WITH 3-718" DIA.
HOLE FOR SUPPORTFLANGE
....
(12 x12

PANEL OR12"

CLEARANCE
( 1" ACCEPTABLE

TYPE
STAINLESS
STEEL
VENTING
USED29-4C
THROUGH
CHIMNEY
THAT
VENTS ANOTHER GAS APPLIANCE

)

CEILING

/
/

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

PIPE )

VENTING THROUGH CEILING

STAINLESSSTEEL
VENTCAP
(OPTIONAL)
SEE CAUTION

DIA MIN.)

/
/

PVC PLASTIC VENTING - ONLY
THROUGH UNUSED CHIMNEY
6 IN. MIN.

STAINLESS

STEEL

VENTCAP
(OPTIONAL)_
SEE CAUTION
SUPPORT
THE SINGLE WAL
STAINLESS
STEEL GAS
VENTING
AND CENTER
IT IP
THE CHIMNEY
OPENING
WI'
ANGLES
AS SHOWN
OR
ANOTHER
EQUIVALENT
MANNER.

6 IN. MIN.

FLUE PIPE

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

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

FLUE PIPE

NOTE:
HORIZONTAL
TO VERTICAL

VENTING
VENTING
NOTE:
HORIZONTAL
VENTING
TO VERTICAL VENTING

Do NOT run vent through chimney for wood burning or oil furnaces or incinerators.
If remaining free area between single wall flue pipe
and masonry chimney is to be used for another gas
appliance venting area must be sufficient to vent
that appliance and that appliance must be connected to chimney with separate entry openings.
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.

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

18-CD19D6-31

Installer's
IMPORTANT:
The Commonwealth
of Massachusetts
requires compliance
with regulation
248 CMR 4.00 and 5.00 for installation
of
through - the - wall vented gas appliances
as follows:
For all side wall horizontally
vented gas fueled equipment
installed in every dwelling, building or structure
used in
whole or in part for residential
purposes,
including those
owned or operated by the Commonwealth
and where the
side wall exhaust vent termination
is less than seven (7)
feet above finished grade in the area of the venting,
including but not limited to decks and porches, the
following requirements
shall be satisfied:
1.
INSTALLATION
OF CARBON MONOXIDE
DETECTORS.
At the time of installation
of the side wall
horizontal
vented gas fueled equipment,
the installing
plumber or gasfitter
shall observe that a hard wired
carbon monoxide detector with an alarm and battery backup is installed on the floor level where the gas equipment
is to be installed.
In addition, the installing
plumber or
gasfitter
shall observe that a battery operated
or hard
wired carbon monoxide
detector with an alarm is installed

Guide

4.
INSPECTION.
The state or local gas inspector of
the side wall horizontally
vented gas fueled equipment
shall not approve the installation
unless, upon inspection,
the inspector observes carbon monoxide detectors and
signage installed
in accordance
with the provisions
of 248
CMR 5.08(2)(a)1 through 4.
This appliance
requires
a special venting system.
If
BAYAIR30AVENTA
or BAYVENT200B
are used, a copy of
the installation
instructions
for the kit shall remain with
the appliance
or equipment
at the completion
of
installation.
The venting system installation
instructions
can be obtained from the manufacturer
by writing to the
following address:
American
Standard,
6200 Troup Highway
Tyler, TX 75707
Attention:
Manager

Inc.

of Field Operations

Excellence

on each additional
level of the dwelling, building or
structure
served by the side wall horizontal
vented gas
fueled equipment.
It shall be the responsibility
of the
property owner to secure the services of qualified licensed
professionals
for the installation
of hard wired carbon
monoxide detectors
a.
In the event that the side wall horizontally
vented
gas fueled equipment
is installed in a crawl space or an
attic, the hard wired carbon monoxide detector with alarm
and battery back-up may be installed on the next adjacent
floor level.
b.
In the event that the requirements
of this
subdivision
can not be met at the time of completion
of
installation,
the owner shall have a period of thirty (30)
days to comply with the above requirements;
provided,
however, that during said thirty (30) day period, a battery
operated carbon monoxide
detector with an alarm shall be
installed.
2.
APPROVED
CARBON MONOXIDE
DETECTORS.
Each carbon monoxide detector as required
in accordance
with the above provisions shall comply with
NFPA 720 and be ANSI!UL 2034 listed and IAS certified.
3.
SIGNAGE. A metal or plastic identification
plate
shall be permanently
mounted to the exterior of the
building at a minimum
height of eight (8) feet above grade
directly in line with the exhaust vent terminal
for the
horizontally
vented gas fueled heating appliance
or
equipment.
The sign shall read, in print size no less than
one-half (1/2) inch in size, "GAS VENT DIRECTLY
BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS".

18-CD19D6-31

Installer's
HORIZONTAL

Guide
CONDENSATE

INSTALLATION

(Upflow/Horizontal

DRAIN

INSTRUCTIONS

or Downflow/Horizontal)

NOTE:
In horizontal venting when the factory supplied
"offset" (2X3 reducing coupling) is used for 3" vent pipe
installation, make sure the marking "Top" is located on
the top side of the pipe.
The straight side must be on
bottom for proper condensate drainage. This coupling
is factory supplied only with the following models:
*UC120 & *DC120, *UX120 & *UY120 *UXIO0 & *UYIO0,
*UX808C960, and all *DX & *DY models.
WHEN THE FACTORY

SUPPLIED

"OFF-SET"

IT IS RECOMMENDEDTHAT A DRAIN PAN BE INSTALLED
UNDER THE FURNACETO PREVENT PROPERTY DAMAGE,
PERSONAL INJURY OR DEATH FROM LEAKING CONDENSATE.

(2X3

REDUCING COUPLING)
IS USED FOR 3" VENT PIPE
INSTALLATION,
MAKE SURE THE MARKING "TOP" IS
LOCATED ON THE TOP SIDE OF THE PIPE.

LABEL
SAYS
"TOP"

....

Right side
STRAIGHT

SIDE

MUST BE

ON BOTTOM FOR PROPER
CONDENSATE
DRAINAGE.

UPFLOW (VERTICAL)

2"TO

3" COUPLING

FACTORY

SUPPLIED

THE FOLLOWING
UC120 & DC120
UX120

ONLY WITH

MODELS:

& UY120

UXl00 & UY100
UX080C960
ALL DX & DY MODLES

UPFLOW
VENT

HORIZONTAL

Use Inducer Drain
hose without
extension
17" UNITS

(Left side only)

OUTLET

VERTICAL APPLICATIONS
All pipe joints must
escape of combustion

be fastened and sealed to prevent
products into the building.

NOTE:
Both venting methods shown in Figure 39 & 41 must
also have the combustion air inlet installed - meeting
dimension requirements of Figure 35.

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

18-CD19D6-31

Installer's

Guide

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

to clean the

Left
side

DOWNFLOW (VERTICAL)

Left side

UPFLOW (VERTICAL)

side

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

DOWNFLOW (VERTICAL)
extension
hose here

UPFLOW HORIZONTAL 21" & 24" UNITS
(Left side only)
HORIZONTAL APPLICATIONS
Upflow and Downflow
furnaces
- All horizontal applications are left side only. It is always recommended
that the auxiliary drain pan be installed under a horizontally installed evaporator
and/or 90% gas furnace.
Connect the auxiliary drain pan to a separate drain line
(no trap is needed in this line).
The trap must be repositioned
to the exterior of the
cabinet. Remove the trap from its present location and
reposition the trap outside of the unit, through the long
circular hole, next to the secondary recuperated
cell.
Remove the larger drain line (from the secondary cell)
and trim to fit between the secondary cell and the new
trap location.
On upflow units, plug the hole in the
blower deck where the tube went through.
Remove the hose from the induced blower and reposition into the other drain tap of the inducer, which is lo-

18-CD19D6-31

Cut off curved end of
Inducer drain hose

DOWNFLOW (HORIZONTAL)
cated 90 ° clockwise around the inducer. Move the cap
from that drain tap to the unused drain tap. On upflow
units, plug the hole in the blower deck where the tube
went through. This tube on downflow units will need to
be cut to fit between the inducer and the trap. On
upflow units, this tube may need to be extended, using
the tubing shipped with the furnace.

Installer's

Guide
IMPORTANT:

Connections
must be made to an OPEN/ VENTED
DRAIN.
Outdoor draining of the furnace and coil condensate is permissible if allowed by local codes. Caution
should be taken to prevent drains from freezing or causing slippery conditions that could lead to personal injury. Excessive draining of condensate may cause saturated ground conditions that may result in damage to
plants.

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

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

Evaporator
and furnace condensate
drain
piping may
be manifolded together as shown in Figure 45. A primary drain vent stack must be installed
and terminated below the outlet of the secondary heat exchanger
drain connection to prevent water from damaging furnace controls if the primary
drain outlet plugs up.
Where the furnace is installed above a finished ceiling,
the primary drain vent stack must be installed such
that overflow from the vent stack opening will flow into
an axillary drain pan in order to prevent water damage
to the finished ceiling below.

NOTE:
A corrosion resistant condensate pump must be used
if a pump is required for a specific drain system.

FIELD WIRING

USING

T "STAT
--

SEE
NOTE 7

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

FURNACE

I
2
3
4
S

[]
[]
[]
[]

[]
if upflow
over
from
stack
drain
the

furnace

a finished
the

ceiling,

primary

must
pan

flow

overflow

drain
into

ceiling

[

vent

an auxiliary

to prevent

finished

[]

is installed

damage

[]

below.

[_()TE:_::

6
i

BE SURE POWERAGREES WITH EOUIPMENT NAMPLATE(S}
LOW VOLTAGE (24V WIRING) TO BE NO 18 AW6
MIN
GROUNDING OF EQUIPMENT MUST COMPLY WITH LOCAL CODES
SET THERMOSTAT HEAT ANTICIPATOR PER UNIT WIRING DIAGRAM
THESE LEADS PROVIDE 115 V POWERFOR CONNECTIONOF ELECTRONIC AIR
{LEANER AND HUMIDIFIER MAX LOAD I0
AMPS EACH
THIS CONNECTION IS ONLY USED FOR THERMOSTATSREOUIRING
CONNECTION TO THE 24 V POWER SUPPLY (COMMON)
SEE TWINNING CONNECTION DIAGRAMS FOR PROPER CONNECTIONS
WHEN USIN(_ THIS FEATURE

SEE
]

P?_o:tdr=oir._
........
mM_LI

I II

secondary
condensate

II IdL_

heat
drain

exchanger
outlet,

NOTE 6

[]

i
i

b_
;i
;i
;i
;i
;i
;i
;i

INTER

(MP

----[l P
24
--LI

NENT

WIR]N

M.
FIEL
E v'. ]_ WI_I

W.
"_,. FA( TORY
E ',,._)/ "/VI_RIN S

From drawing

B341437

Rv 1

18-CD19D6-31

Installer's

Guide

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

FURNACE

NOTES:
OUTDOOR UNIT
(NO TRANSFORMER)

D
D

t-q
t-q

SEE
NOTE 6

h BE
SURE
POWER
2. LOW VOLTAGE{24
3.
4.
S.

t-q
t-q

D
D
D

SEE
NOTE 8

AGREES
WITH
EQUIPMENT
V. WIRING}
TO
BE NO.

NAMEPLATE{S}
A.W.G.
MIN.

GROUNDING
OF EQUIPMENT
MUST
COMPLY
SET
THERMOSTAT
HEAT
ANTICIPATOR
PER
THESE
LEADS
PROVIDE
115 V. POWER
FOR

WITH
LOCAL
UNIT
WIRING
CONNECTION

CLEANER

AMPS

AND

HUMIDIFIER

MAX.

LOAD

1.0

CODES.
DIAGRAM.
OF ELECTRONIC

AIR

EACH.

THE
"Y"
TERMINAL
FROM
THE
THERMOSTAT
MUST
BE WIRED
TO THE
"Y"
TERMINAL
OF THE
FURNACE
CONTROL
FOR
PROPER
BLOWER
OPERATION
DURING
COOL]NO.
IGNITION
CONTROL
1S POLARITY
SENSITIVE.
HOT
LEG
OF
120 VOLT
POWER
SUPPLY
MUST
BE CONNECTED
TO THE
BLACK
LINE
POWER
LEAD
AS INDICATED
ON THE
WIRING
DIAGRAM
OR
IGNITION
LOCKOUT
WILL
OCCUR.
THIS

CONNECTION

IS
THE

ONLY
24

USED
POWER

FOR

THERMOSTATS

SUPPLY

,ill

REQUIRING

(COMMON)

GROUND
SCREW

JUNCTION
BOX
BK

TO 115V

{N•ER

7 7MPONEN•
2d

',.J".

----LINE

,.. F I E L D

Yv'IRIN@
2d

--LINE

m i

",,/'i]R]NG

'/.

'k F£CTORY
....vg"IR IN O

60 HZ.,
SUPPLY
LOCAL

1 PH.,
POWER
PER
CODES

L N

HUM SEE
NOTE5

EAC SEE
NOTE 5

_j BK
WH

From drawing

B340388

Rv 2

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

18-CD19D6-31

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

1 STAGE HEAT
ONLY

TWINNING CONNECTION DIAGRAM
FOR TWINNING 1 STAGE FURNACES WITH
SINGLE WIRE TWINNING FEATURE
1 STAGE HEATING ONLY THERMOSTAT

THERMOSTAT
(WITH

FURNACE

FAN SWITCH

FURNACE
BLOWER
UNIT

NO, 2

OPERATION

2 IS

/IOT_$

SYNCRON]ZED

WITHUNITNO 1VIA SIGNALS
FROMTWINCONNECTION

BOTH FU#)MC_S
THE SA74£ 5V

MOST BE POF/b9[ ' fRO),
LEG OK /ROUT
PA#EL

IHSUR# 2#Y #Ui!#ACL TRANSFORMERS ARE
IN PHASk
P_IOR TO COMPLklI#C COHNECTiO#$,
CHEC_ FOLTAGF _FFW_N
R ¸ T_£_/#Ai$
OF
EACH FuRnACE
iF VOLTAS_ /$ GR_AT_£ IH4#
/OY,
REVERSE _H_¸ Bi A# RD $_CO£DARY itADS
0£ O#E OF THL FU£NACE 7RA£SFO£HER$
3

C<_'H CTiOtl
t
CTiOt_C

FO!

iF C_)_RFHT [XCE_DS _H_R#OSTA7 CURR£NT
RMiNd,
US_ ISOLATIOH RELAYS ('R{')
AS
SHOW#¸ (DO NOT CONNECT W _0 #)
ISOLAT/O_ RELAY _0/ #EED_D fF THE THFRMOST_
CO#TACT$ 4RE R_T£_ AT i OA OR ABOYE

SEE NOTE 4

qr<

_,!A}' _ R gUHE_)
T# Rt/,OSTAT

ISOLATIONRELAY
(FIELDSUPPLED)
SEENOTE4
1

Rll-

____.
iSOLATiON RELAY
SEE NOTE 4

INTE

CO['d:)ONENT

Y',/]F_INO

CLTER_'ATE /IiRM'_

'/.

----kI\E

SEE NOTE 3

24 v".
LI_E

CONF f_URAT O_'

"k FIELD
7.jSYv'IRING
i F#CTO:_Y
/.S ?-',/',iI _ING

iiiiiiiiiiii
From Dwg. 21B341422 Rev. 3

TWINNING CONNECTION
DIAGRAM
FOR TWINNING 1 STAGE FURNACES WITH
SINGLE WIRE TWINNING
FEATURE
1 STAGE HEAT/1 STAGE COOL THERMOSTAT
OUTDOOR UNIT
WITH TRANSFORMER

1 STAGE
HEATING / COOLING
THERMOSTAT

FURNACE NO. 1

FURNACE NO. 2
BLOWER
UNIT

OPERATION

it_SURE 24i'

2 IS SYNORONIZED

£URA4CE T_/)_SFOR!_ERS
_RE

E4C_
¸ FURt_4CE _F VOLT4_E _S GRE_TE_ THe,',
,¸
_OY , i_V[R$_ THEfiL A_ RO S[20_b_i_ _4_$

OUTDOO£U#tT H_S ,4 24'
A_,
,¸ _OL_T_Ot_ ,_L4_ MUST_

3g'

I_o_o
s_

T,Afl FO!t_ _i
i_,_ST_LL_D

NOT_
SEE NOTE 4

(NO
OUTDOOR
TRANSFORMER}
UNIT

nf,--i
_SOLATION

RELAy

INTER

COMPONENT

24 ',/.
L ]NE
/
24

% ........%

--LINE

I
From Dwg21B341423

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

Rev, 2

WIRING

_ FIEL
/"

x
t, FACTOi
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TRANE Furnace/Heater, Gas Manual L0903224

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