TRANE Furnace/Heater, Gas Manual L0906046

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- CD2 4 D1 - 2
Available in French Canadian (FC)

Variable Speed, 2-Stage, 80% Upflow/Horizontal
Gas-Fired Furnaces, "Fan Assisted Combustion
System" with Whole House Air Cleaner
*UD2B060AFV32A
*UD2B080AFV32A
*UD2C080AFV42A
*UD2B100AFV32A
*UD2D120AFV52A
*__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

For VENT
USA -National

SIZING

STATE AND LOCAL CODES
property
and is to remain with this unit.
pack upon completion of work.

INFORMATION

see:

Fuel Gas Code ........ ANSI Z223.1/NFPA

54 (latest

version)

CANADA-Natural
Gas Installation
Code ..... CAN/CGA-B149.1
Propane Installation
Code ............ CAN/CGA-B149.2

(latest
(latest

version)
version)

USA/CANADA
ALTERNATE
-Category I Venting Guide .......... Pub. No. 18-CH23D1

(latest

version)

Upflo_ Horizontal*
This unit is equipped with an integrated high efficiency
Whole House Air Cleaner. Careful consideration
must
be taken in the installation process to avoid personal injury, property damage or equipment damage. These instructions do not cover all variations in systems or provide for every possible contingency.
Should further information be desired or particular problems arise which
are not covered sufficiently
by this manual,
contact
your local distributor
or the manufacturer
as listed on
the Furnace nameplate.
In addition, these Furnaces are suitable for installation
in an attic, garage or crawl space with ducted supply
and return air.
*Units are BOTTOM RETURN only
Horizontal Conversion for these furnaces
may be left or right side rotation.
Safety signal words are used to designate a degree or level of seriousness
signal words for safety markings are WARNING and CAUTION.
a. WARNING indicates
jury.

a potentially

hazardous

situation

associated

with a particular

which, if not avoided, could result

hazard.

in death or serious

The
in-

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.
A341789P08

Installer's

Guide

SAFETY

SECTION

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
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 CSA
B149.1 Natural Gas and Propane Installation Code
and these instructions.
Determine that there is no
blockage or restriction, leakage, corrosion and other
deficiencies which could cause an unsafe condition.
As far as practical, close all building doors and
windows and all doors between the space in which
the appliance(s)
connected
to the venting system
are located
and other deficiencies
which could
cause an unsafe condition.

4. Close fireplace
5.

in the venting system.

dampers.

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.
Follow the lighting instructions.
Place the appliance
being
inspected
into
operation.
Adjust
the
thermostat so appliance is operating continuously.

7. Test for spillage from draft hood equipped appliances
at the draft hood relief opening after 5 minutes of
main burner operation.
Use the flame of a match or
candle.
8. 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 CSA B149.1 Natural
Gas and Propane Installation

Code.

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

FIRE OR EXPLOSION HAZARD
Failure to follow the safety warnings exactly could result in serious injury, death or property damage.
Improper servicing could result in dangerous operation, serious injury, death, or property damage.
© 2008 Trane

Failure to follow safety warnings exactly, could
result in a fire or explosion causing property
damage, personal injury or loss of life.
-- Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
-- WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch;
do not use any phone in your building.
•

Immediately
neighbor's
instructions.

call your
gas supplier
from
phone. Follow the gas supplier's

• If you cannot reach your gas supplier,
call the fire department.
-- Installation
a qualified
supplier.

and service must be performed by
installer,
service
agency
or the gas

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" (page 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 (page 12),
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 the "Gas Piping" section of
these instructions on page 19.
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.

18-CD24D

1-2

Installer's

Guide

Contents
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-i 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.

Chemicals used to during construction may cause
damage to the COLLECTION CELL.

DO NOT USE SEMI-RIGID METALLIC GAS CONNECTORS (FLEXIBLE GAS LINES) WITHIN THE FURNACE
CABINET.
FAILURE TO FOLLOW THIS WARNING COULD RESULT
IN PROPERTY DAMAGE, PERSONAL INJURY OR
DEATH.
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 Comfort Control (no field jumpers).
c. The Furnace return air duct must be complete
and sealed to the Furnace.
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.
g.

Safety Section

Installation

Instructions

General
Location and Clearances
Outline Drawings
Upflow Installation
Horizontal Installation
Air For Combustion and Ventilation
Duct Connections
General Venting
Venting Routed Through a Masonry Chimney
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

Conditions Affecting System Operation
Whole House Air Cleaner Maintenance

IFC Error Flash Codes
Checkout Procedure

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

The Furnace return air temperature
range is
between 550 and 800 Fahrenheit.
Clean the Furnace, duct work, and components
upon substantial
completion of the construction
process, and verify Furnace and whole house
air cleaner operating conditions including ignition, input rate, temperature
rise and venting,
according to the manufacturer's
instructions.
Remove the Whole House Air Cleaner
and
store in a clean,
dry location
during
the
construction
process. To be reinstalled
when
construction
is complete. See page 27 for proper
air cleaner removal.

An external field supplied
used during construction.

18-CD24D 1-2

air filter

must

Installer's
GENERAL

Guide

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 must be
reduced (See combustion and input check page 21).
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 Fan Assisted
Combustion system CATEGORY I furnaces as required
by ANSI Z21.47 "latest edition" and CAN/CGA 2.3.
Therefore they do not require any special provisions for
venting other than what is indicated in these instructions. (Category I defined on pages 12 and 13).

LOCATION

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

AND CLEARANCES
8.

Do NOT install the Furnace directly on carpeting, tile or
other combustible material other than wood flooring.

Furnace combustion air openings in the front panel
and any closed panel or door provided?
Are the ventilation
and combustion
air openings
large enough and will they remain unobstructed?
If
outside air is used, are the openings set above the
highest snow accumulation
level? (See the Air for
Combustion and Ventilation section, page 9)
A heavy
gauge
steel plate is attached
to the
bottom of the unit for protection
during
shipping and handling
prior
to the unit installation. Leave this plate in place until the unit is
ready to be connected
to the ductwork.
A Pre-filter
is not required
to be installed
with
the furnace
containing
a Whole
House
Air
Cleaner.
If the use of a Pre-Filter
is desired, it
must be installed at least 6" away from the Whole
House Air Cleaner. The additional
pressure drop
of the Pre-Filter
must be considered
during duct
design or evaluation
to ensure proper airflow.
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.

9.
Do NOT install the Furnace in a corrosive or contaminated atmosphere.
Failure to follow this warning could result in early
equipment failure.

A Furnace shall be installed so electrical components are protected from water.
10. DO NOT use silicon based sealant in the airstream.
This causes a coating on the FIELD CHARGER pins
that will decrease the efficiency of the air cleaner.
11. Allow a minimum of 24 inches clearance in front of
the air cleaner to permit removal of COLLECTION
CELL and FIELD CHARGER.
12. DO NOT install furnace where the air cleaner can
be exposed to UV light.

18-CD24D 1-2

Installer's

Guide

NOTE: Do NOT install an atomizing style humidifier in
the return plenum of this unit.
13. Flow-through
Bypass Humidifiers
Excessive bypass
air may cause water blow-off,
which will adversely affect system operation and air
cleaner performance.
To verify bypass airflow, follow the Bypass Humidifier Pre-Installation
Checkout and Set-Up Procedures
available through your
local distributor.
Ask for publication
number 18CH37Dl-1.
Steam
and Flow-through
Fan
Power
Ductmounted
Humidifiers
Follow the humidifier
installation
instructions.
These should only be installed on the supply air
side of the system.
Other Duct Mounted
Humidifiers
are not recommended
for
installation
with
the
air
cleaner.
14. If the Furnace is installed in a residential
garage,
it must be installed so that the burners, and the ignition source are located not less than 18 inches
above the floor and the Furnace must be located or
protected to avoid physical damage from vehicles.
15. The whole house air cleaner is designed to run at a
maximum indoor relative humidity of 65%.

Figure 1. COMPONENTS OF THE INTEGRATED WHOLE HOUSE AIR CLEANER

\
Components

of the integrated Whole House Air Cleaner:

1) FIELD CHARGER

- Charges

the contaminants

2) COLLECTION
CELL - removes and collects very small
impurities from the air.
3) Power Supply - the solid state power supply converts
the 24 Volt AC to the high-voltage,
direct current
required to power the FIELD CHARGER and COLLECTION CELL.

Check carefully for any shipping damage. This
must be reported to and claims made against the
transportation company immediately. Check to be
sure all major components are in the unit. Any
missing parts should be reported to your supplier
at once, and replaced with authorized parts only.
18-CD24D 1-2

Installer's

Guide

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18-CD24D 1-2

Installer's
INSTALLATION

Guide

INSTRUCTIONS

Bottom panel for furnace to remain in place until unit
reaches final installation location. If bottom panel is removed before installation the collection cell and field
charger must also be removed to protect installation
personnel.

Remove the COLLECTION
CELL
card the cardboard over the cell.

and remove

and dis-

UPFLOW INSTALLATION
Standoffs and screws (See Figure 2) 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. The coil is always placed downstream of the Furnace airflow. The above instructions
apply only if the
coil is on top of an upflow Furnace.

NOTE:
No sheetmetal screws may be used from 0-4"
from the bottom of the unit. Screws will interfere with
the Air Cleaner. See Figure 4.

FOR VERTICAL
STANDOFFS

(4)

DRILL

Once the furnace is in place, remove the two screws
located at the front bottom corners of the Furnace.

Lean the furnace back slightly and remove
tom panel.
Replace the two screws removed in step a.

Figure 2

STANDOFFS

must be removed, follow the steps below.
a. Remove the lower furnace door.
b. Remove the four screws holding the inner blower
panel and remove panel. Set aside in a safe place
until the unit is set in place and ready to start up.
e. Remove the COLLECTION
CELL by sliding forward. Remove the cardboard
from the COLLEC-

e.
f.

TION CELL and discard. Set aside in a safe place
until the unit is set in place and ready to start up.
Disconnect the Green return wire and the Red high
voltage wire. Twist and pull the connector on the
Red wire to release.
Remove the two hold down screws on the bottom of
the FIELD CHARGER and retain.
Remove the Field Charger.
Set aside in a safe
place until the unit is set in place and ready to start
up.

Set furnace in place. Repeat step a-g in reverse order. Do Not put cardboard back in Furnace. Inner
blower door MUST be put back into place.

18-CD24D 1-2

(4)

the bot-

REMOVING THE COLLECTION CELL AND FIELD
CHARGER
When COLLECTION
CELLS and FIELD CHARGER

SCREWS

REMOVING THE BOTTOM PLATE

HORIZONTAL INSTALLATION
The coil and furnace must be fully supported
in the horizontal position.

when used

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

The eased

coil is secured

to the Furnace

and both the

Furnace and the eased coil must be properly supported.
The brackets mount using the rear screws on the coil
ease 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 ease front and the upflow Furnace,
converted to
horizontal, aligns and attaches to the TXC coil. However, the coil requires additional support.
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 3 & Clearance Table
1). 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

Typical Upflow/Horizontal

Attic Installation

////

Materials
•

•

Duct Flanges
Two 23.5" Flanges
Two Additional Flanges
15.92" (for 17.5" cabinet)
19.42" (for 21" cabinet)
21.92" (for 24.5" cabinet)
Screws
Eight
Head

5/16" Blunt

Tip Screws

with 5/16" Hex

Steps
1. See Figures
Figure 3
The Furnace may be placed horizontally
in a crawl space on a
pad or other noncombustible
material
which will raise the
unit for sufficient protection
from moisture.
The Furnace
must be supported
at both ends and the middle when installed
horizontally.
The Furnace
must also be elevated
approximately
4-6 inches to allow clearance
for the condensate
drain to exit the cabinet
in the horizontal
position.
The horizontal
Furnace
may also be suspended
from the
joists using all-thread rods with a substantial
metal support
frame that supports the entire length of the furnace. The rods
need to be of sufficient length to allow for proper clearances
from combustible
materials.
The frame needs to be at least
32" in length to allow for access to service panels.
If the Furnace is suspended
using steel strap, it must be supported at all four corners and in the middle at the front of the
Furnace.

5, 6, and 7 for flange orientation.

2. Attach flanges 1, 2, and 3 (Fig 7) to the unit using
the factory provided
screws and the pre-drilled
holes in the wrapper.
Flanges
1 and 2 are the
23.5" flanges that are generic to all units. Flange
3 will be one of two short flanges and the length
of which is dependent
on the cabinet size.
3. Attach flange 4 (Fig 7) to the duct work (Flanges
should be inside duct work). Flange 4 is the
remaining
short flange.
4. Place duct work with single flange over the 3
flanges that are currently
attached to the unit
5. Attach duct work to remaining
3 flanges.
6. Attach the front flange from step 3 to the unit by
drilling 1/8" holes into the bottom channel.
Use
the factory provided
5/16" blunt tip screws to
attach.
7.

Use field supplied material
to make
seal. DO NOT use silicon
based
the airstream.

NOTE: No sheetmetal
screws may be used
from 0-4" from the
bottom of the unit.
Screws will interfere
with the air cleaner.

an adequate
sealant
in

i3
Figure

5: Horizontal

Left

Figure 4

NOTE: Do NOT install screws to the bottom of the
unit except with Duct Flanges and Screws provided.

GUIDE FOR THE INSTALLATION OF DUCT FLANGES

Failure to use pre-drilled holes and the factory
provided screws can potentially damage air cleaner
components.

18-CD24D 1-2

Installer's
Use

Use pre-drilled
holes

pre-

drilled
holes

.................
i)_
Use predrilled
holes

Guide

AIR FOR COMBUSTION AND VENTILATION
Adequate flow of combustion and ventilating air must
not be obstructed from reaching the Furnace.
Air openings provided in the Furnace casing must be kept free
of obstructions which restrict the flow of air. Airflow restrictions
Furnace.
model or
Furnaces
mance.

affect the
Keep this
change the
must have

efficiency and safe operation of the
in mind should you choose to rearea which contains your Furnace.
a free flow of air for proper perfor-

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, or Sections 7.2, 7.3 or 7.4
of CSA B149.1 Installation
Codes, and 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.
Furnace locations may be in "confined space" or "unconfined space". Unconfined space is defined in Table 2 and
Figure 8. These spaces may have adequate air by infiltration to provide air for combustion, ventilation,
and
dilution of flue gases. Buildings with tight construction
(for example,
weather
stripping,
heavily
insulated,
caulked, vapor barrier, etc.), may need additional
air
provided as described for confined space.

Figure
Flange

7: Bottom View
Attachment

UNCONFINED

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

Table 1
Minimum

Clearance

to Combustible

Materials

WATER

Upflow Closet

Figure

Left Side

0 inches

Front

3 inches (note 1)

Right Side

0 inches

Back

0 inches

Flue

6 inches *

Top

1 inch

CLOTHES

8
TABLE 2

MINIMUM AREA IN SQUARE FEET
FOR UNCONFINED SPACE INSTALLATIONS
FURNACE
WITH 8 FT.CEILING
MAXIMUM BTUH MINIMUM AREA IN SQUARE
INPUT RATING FEET OF UNCONFINED SPACE

Horizontal Closet
(see note 2)
Top

2 inches

Back

3 inches

Flue

6 inches *

Sides

1 inch

Front

18 inches (note 1)

Horizontal Alcove
(see note 2)
Top

1 inch

Back

0 inches

Flue

6 inches

Sides

0 inches

Front

18 inches

• May be 1" when type B-1 vent is used
NOTES:
1) Minumum clearance to front on *UD2D120 is 6 inches
2) May be installed on combustible floor when type B-1 vent is used.

18-CD24D 1-2

NO
DOORS

60,000
80,000
100,000
120,000
140,000

375
500
625
750
875

1. All air from inside the buildina as in Figure 10: 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 3, for minimum open areas required.
9

Installer's

Guide

2. All air from outdoors as in Figure 11: 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
ducts, with the outdoors or spaces
that freely communicate
with the
to Table 3, for minimum open areas

directly, or by
(crawl or attic)
outdoors.
Refer
required.

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

FURNACE

TABLE 3
MINIMUM FREE AREA IN SQUARE INCHES
EACH OPENING FURNACE ONLY)

Rating

Air
From
Inside

60,000
80,000
100,000
120,000
140,000

lOO
1oo
lOO
120
140

Air From Outside
Vertical
Duct
15
20
25
30
35

Horizontal
Duct
30
40
50
60
70

Confined spaces are installations
with less than 50 cu.
ft. of space per 1000 BTU/hr input from all equipment
installed.
Confined space is defined in Figure 9. Air for
combustion
and ventilation
requirements
can be supplied from inside the building as in Figure 10 or from
the outdoors, as in Figure 11.
3. 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 commercial laundry rooms
* Furnaces installed in 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 perchloroethylene)
* Printing inks, paint removers, varnish, etc.
* Hydrochloric acid
* Cements and glues
* Antistatic fabric softeners for clothes dryers
* Masonry acid washing materials
10

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.

Furnace
Maximum
BTUH/INPUT

NOTE: Extended warranties
are NOT available in some
instances.
Extended warranty does NOT cover repairs
to equipment
installed in establishments
with corrosive atmospheres,
including but limited to, dry cleaners, beauty shops, and printing facilities.

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 cotfld, if
poorly installed, result in 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.
Where there is no complete
return duct system,
the return connection
must be run full size from
the Furnace
to a location
outside
the utility
room, basement,
attic, or crawl space.
Do NOT install return
nace cabinet.

air through

the back of the Fur-

18-CD24D1-2

Installer's
Bottom

Return

Only

Figure

NOTE: Minimum return air temperature is 55 ° F.

CONFINED
AIR FROM

SPACE
OUTDOORS

NOTE: No sheetmetal screws may be used from 0-4"
from the bottom of the unit. Screws will interfere with
the air cleaner. See Figure 4.
The following

warning

complies

with State of California

law, Proposition

Guide

65.

CONFINED

_'///////////////"////////,
OUTLET

SPACE
OUTDOOR
AIR DUCTS

Hazardous

Gases!
INLET

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

serious

A variety of potential sources of carbon monoxide can be
found in a building or dwelling such as gas-fired clothes
dryers, gas cooking stoves, water heaters, Furnaces and
fireplaces.
The U.S. Consumer
Product Safety Commission recommends
that users of gas-burning
appliances install carbon monoxide detectors as well as fire
and smoke detectors per the manufacturers
installation
instructions to help alert dwelling occupants of the presence of fire, smoke or unsafe levels of carbon monoxide.
These devises should be listed by Underwriters
Laboratories, Inc. Standards for Single and Multiple Station
Carbon Monoxide Alarms,
UL 2034 or CSA International Standard, Residential Carbon Monoxide Alarming
Devices, CSA 6.19

_///////7///._

CONFINED

SPACE

AIR FROM

VENTILATED

¢//7///._

k
ATTIC/CRAWL

SPACE
TO OUTDOORS

CONFINEDSPACE

ALTERNATE
INLET AtR

CONFINED

SPACE

AIR FROM VENTILATED

ATTIC

NOTE: The manufacturer of your Furnace does NOT test
any detectors and makes no representations
regarding
any brand or type of detector.
•"_

Connect duct work to Furnace. See Outline Drawing for
supply and return duct size and location. Flexible duct
connectors are recommended
to connect both supply
and return air ducts to the Furnace. If only the front of
the Furnace is accessible, it is recommended
that both
supply and return air plenums are removable.

Figure

SPACECONFINED

OUTLET

lAIR INLET
AIR DUCT

CONFINED
AIR FROM

SPACE
INSIDE BUILDING

PERMANENT
OPENINGS

SPACE

18-CD24D 1-2

Installer's
GENERAL

Guide
VENTING

INSTRUCTIONS

in the venting system.

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
5.

dampers.

Installation

VENT PIPING
These Furnaces
have been classified as Fan-Assisted
Combustion
System, Category I Furnaces
under the
"latest edition" provisions of ANSI Z21.47 and CAN/
CGA 2.3 standards.
Category I Furnaces operate with a
non-positive vent static pressure and with a flue loss of
not less than 17 percent.
NOTE: If desired, a side wall termination can be accomplished through the use of an "add-on"
draft inducer.
The inducer must be installed according to the inducer
manufacturer's
instructions.
Set the barometric pressure relief to achieve -0.02 inch water column.
NOTE: The Furnace shall be connected to a chimney or
vent complying with a recognized
standard, or a masonry or concrete chimney lined with a lining material
acceptable to the authority having jurisdiction.

Furnace venting into an unlined masonry chimney or
concrete chimney is prohibited.
Failure to follow this warning could result in property
damage, personal injury, or death.

VENTING INTO A MASONRY CHIMNEY
If the chimney is oversized, the liner is inadequate, or
flue-gas condensation
is a problem in your area, consider using the chimney as a pathway or chase for type
"B" vent or flexible vent liner. If flexible liner material
is used, size the vent using the "B" vent tables, then reduce the maximum
capacity by 20% (multiply 0.80
times the maximum
capacity). Masonry Chimney Kit
BAYVENT800B
may be used with these Furnaces
(Upflow model furnaces
only) to allow venting into a
masonry
chimney.
Refer
to the
BAYVENT800B
Installer's Guide for application requirements.
Internal Masonry Chimneys
Venting of fan assisted appliances into a lined, internal
masonry chimney is allowed only if it is common vented
with at least one natural
draft appliance; OR, if the
chimney is lined with type "B", double wall vent or suitable flexible liner material (See Table 4).

Code.

9. 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.

The chimney liner must be thoroughly inspected to insure no cracks or other potential areas for flue gas
leaks are present in the liner. Liner leaks will result in
early deterioration of the chimney.
Failure to follow this warning could result in carbon
monoxide poisoning or death.
NOTE:
The following
section
does
not apply
if
BAYVENT8OOB (Masonry Chimney Vent Kit) is used. All
instructions with the kit must be followed.

18-CD24D 1-2

Installer's
TABLE 4
MASONRY CHIMNEY VENTING
Tile Lined Chimney

Chimney Lining

Type Furnace

Internal

External

"B" Vent

Flexible
Metal Liner

Single Fan
Assist

Yes

Yes*

Fan Assist
+
Fan Assist

Yes

Yes*

Fan Assist
+
Natural

Yes

Yes*

Flexible chimney liner size is determined by using the type "B" vent size for
the available BTUH input, then reducing the maximum capacity by 20%
(multiply maximum capacity times 0.80). The minimum capacity is the same
as shown in the "B" vent tables.

External Masonry Chimney
Venting of fan assisted appliances into external chimneys (one or more walls exposed to outdoor temperatures), requires the chimney be lined with type "B",
double wall vent or suitable flexible chimney liner material. This applies in all combinations of common venting as well as for fan assisted appliances vented alone.
The following installation practices are recommended to
minimize corrosion caused by condensation
of flue products in the Furnace and flue gas system.

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.
1. Avoid an excessive number of bends.
2. Horizontal runs should pitch upward at least 1/4" per
foot.
3. Horizontal runs should be as short as possible.
4. All vent pipe or connecters should be securely supported and must be inserted into, but not beyond
the inside wall at the chimney vent.
5. When vent connections must pass through walls or
partitions of combustible material, a thimble must
be used and installed according to local codes.
6. Vent pipe through the roof should be extended to a
height determined by National Fuel Gas Code or local codes. See Figure 12 and Table 5. It should be
capped properly to prevent rain water from entering the vent. Roof exit should be waterproofed.
7. Use type "B" double wall vent when vent pipe is
routed through cool spaces (below 60 ° F.).
8. Where long periods of airflow are desired for comfort, use long fan cycles instead of continuous airflOW.

9. Apply other good venting practices
venting section of the National
ANSI Z223.1 "latest edition".

Guide

11. Horizontal
pipe runs must be supported
by hangers,
straps
or other suitable
material
in intervals
at a
minimum
of every 3 feet of pipe.

12. A Furnace shall not be connected to a chimney or
flue serving a separate appliance designed to burn
solid fuel.
13. The flow area of the largest section of vertical vent
or chimney shall not exceed 7 times the smallest
listed appliance categorized
vent area, flue collar
area, or draft hood outlet area unless designed in
accordance with approved engineering methods.
Maximum Vent or Tile = _(0*y
4
Lined Chimney Flow Area
*Drafthood
ameter.

outlet

diameter,

flue

collar'

diameter,

or listed

appliance

X7
categorized

vent

di-

The cabinet must have an uninterrupted or unbroken
ground according to National Electrical Code, ANSI/
NFPA70
"latest edition" and Canadian Electrical
Code, CSA C22.1 or local codes to minimize personal
injury if an electrical fault should occur.
Failure to follow this warning could result in an electrical shock, fire, injury, or death.

The Integrated Furnace Control is polarity sensitive.
The hot leg of the 115 VAC power must be connected to
the BLACK field lead.

To prevent injury or death due to electrical shock or
contact with moving parts, lock unit disconnect switch
in the open position before servicing the unit.
Failure to follow this warning could result in electrical
shock, personal injury, or death.
TABLE 5
GAS VENT TERMINATION
ROOF
FLAT
OVER
OVER
OVER
OVER
OVER
OVER
OVER
OVER
OVER
OVER

PITCH

TO 7/12
7/12 TO 8/12
8/12 TO 9/12
9/12 TO 10/12
10/12 TO 11/12
11/12 TO 12/12
12/12 TO 14/12
14/12 TO 16/12
16/12 TO 18/12
18/12 TO 20/12
20/12 TO 22/12

MINIMUM

HEIGHT

1.0 FEET *
1.5 FEET
2.0 FEET
2.5 FEET
3.25 FEET
4.0 FEET
5.0 FEET
6.0 FEET
7.0 FEET
7.5 FEET
8.0 FEET

* THIS REQUIREMENT COVERS MOST INSTALLATIONS

as stated in the
Fuel Gas Code

10. Vent
connectors
serving
appliance
vented
by
natural
draft
or non-positive
pressure
shall
not be connected
into any portion
of a mechanized
draft
system
operating
under
positive
pressure.
18-CD24D 1-2

Installer's
FIGURE

Guide
VERTICAL

WALL

8'MIN

LISTED
CAP

LOWESTDISCHARGE
OPENING

THE VENT TERMINATION
LESS THAN 8 FT FROM

SHOULD NOT BE
A VERTICAL WALL

FIELD WIRING

VARIABLE SPEED
2-STAGE FURNACE

DIAGRAM

FOR VARIABLE

SPEED

2 STAGE FURNACE

1 STAGE HEATING
USING A 1 STAGE HEATING THERMOSTAT
NO COOLING

0"-.,
w14

1.
2.
3.
4.
5.

Be sure power agrees with equipment nameplates.
Low voltage (24 volt 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 115V. power for connection of humidifier
MAX. load 1.0 amp.

When a single stage heating thermostat without fan switch
is used, no wiring on "G" terminal is used.
W1 and W2 must be jumpered together for proper operation.
Second stage heat will begin 10 minutes after first stage.
Set dip switches with power off per installation
instructions
to set airflow and indoor fan off delays.
Continuous
fan airflow can be increased by adding this jumper.
This wire is only for thermostats
requiring connection to
transformer
common terminal.
Optional humidistat
is to be connected
between R and BK. Factory installed jumper R
to BK on the circuit board must be cut if optional humidistat is used. The jumper must
also be cut when applying an airflow command
signal to the BK input such as with the

(7/_

W14 JUMPER
SEE NOTE 11

8.
9.
10.
11.

SEE
_NOTE

variable speed single-zone
and multi-zone system controllers. On single speed cooling
only/non-heat
pump systems, jumper Y to O for proper operation of the delay profiles
and the humidistat.
For two compressor
or two speed systems, jumper YLo to O.

FIELD ADDED JUMPER
Wl TOW2.

GROUND
_ 'SCREW

2NDSTAGE
WILLFIRE
10
- MINUTES AFTER 1ST"

iII'l

_
_

BK
_K

J
FL.
TO115V1PH.,
/ .....
60 HZ., POWER I
SUPPLY PER
_}
LOCAL CODES |LN

HUM SEE

[

F U R N ACE
JU kl....¢" T I0N

BOX

i_rL_---._l,_

r=J
Wl-I

I
_

I_
II
I I_
_-.Ig_U_.-q

WHA

l-U
I

NOTE1_.
"K
From Dwg. B342027

Rev. 0

18-CD24D 1-2

Installer's

FIELD WIRING

Guide

DIAGRAM

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

VARIABLE SPEED
2-STAGE FURNACE

T'STAT

,__{-_

1, Be sure power agrees with equipment nameplates,
2, Low voltage (24 volt 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,
5, These leads provide 115V. power for connection of humidifier
MAX, load 1,0 amp,
6, This wire is only for thermostats requiring connection to
transformer common terminal,

0_\

\
W14 I

@
r-q

W14 dUMPER
SEE

NOTE

D
D:
I

, --

{_'J

7, Continuous fan airflow can be increased by adding this jumper,
8, Set dip switches with power off per installation instructions
to set airflow and indoor fan off delays,
9, Optional humidistat is to be connected between R and BK, Factory
installed jumper R to BK on the circuit board must be cut if optional
humidistat is used, The jumper must also be cut when applying an airflow
command signal to the BK input such as with the variable speed single-zone
and multi-zone system controllers, On single speed cooling only/non-heat pump
systems, jumper Y to O for proper operation of the delay profiles and the humidistat,
For two compressor or two speed systems, jumper YLo to O,

SEE
NOTE 7
GROUND

I_S--C--R-_.,..--- FURNACE

E_--

',1

'--{_

r-,.

SEE

[_--

-- [BT_

HUMSEE F wH "_
INTER-C(}MPONENT

WIRIN(]}

L. FIELD
Y..f WIRING

_._ FACTORY
V.j_WIRING

----LINE
--LINE

18-CD24D 1-2

_
I, _

LOCAL
CODES
/-L_----

NOTE

.KI1_

TOl15Vl PH., / .....
60 HZ., POWER !
SUPPLYPER _

.NOTE6.

[

[--

---_4-1-n
I

Ii _

r JUNCTION
',

BOX

WH/_I
I
I

T21
I

I
From Dwg. B342025

Rev. 0

Installer's

Guide
FIELD WIRING

DIAGRAM

FOR VARIABLE

1 STAGE HEATING,

SPEED

2 STAGE FURNACE

1 STAGE COOLING

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

NOT E S
I

LO'a

3
.........

SURE

SET

0-,
w14\1

THESE

w14 JUMPER
SEE NOTE 9

"Y"

O_TIONAL
INSTALLE)

S_STEMS

t41N
LOEAL
'#IRING

{ON

CODES
DIASRA4

E(TION

EACH
REOLIRIN(
TER_

THERbIOSTAT

THE

I NAL
M

_NA(E

'¢_ITH

?FL()_t

A%D

F'OV,_ER

IN)(}()_
IS
TO

USED

SISN/_L
ZONE

TO
BK

THE

TO
THE
S'STEM

}J_PER

FCR

BE
()t
J

:_E_
OFF

EON
THE

MPER

TRDL

/_I_ED
FOR

N_()PER

SLOWER

FOR

INSTALLATION

ECTED
CII(UIT

S[JCH
0
O r;

BET'dEEN
BO_i![)
ALSO

A q_
OH

ROPER

COMPRESSOR

INST_U(TIONS

I)ELAYS

1,4[JST

K
INPt}T
CONTROLLE_LYING

VARIABLE
SPEED
COOLI:xG

THE

DELAY

SfSTE_4S,

AIRFLOW

SPEED
SItGLE
CNL'/NON
PROFILES

MER

1LO

/O
HEAT
AN)

E
PlqP

THE

GROUND

E_
FIELD

ADDED
W1

[_]---

UNIT

COOLING

HLJ_ql)ISTAT
JLqPE_

COS4,_:\)
sND
b'bLTI

"NO-TEL
- -F'_

S,_'ITCHES

SET

Hdkl)ISTAT

.........

'£ITH

FOR

AMPS

(OHm'ON
THE

TERblNAL

HUMIDISTAT

IT]---

THERMOSTATS

FROH

DUEING

?°.......

O'2'ER
I

TRANSFORMER

TERwI:xAL

THE

SET

SEE
--

"'"

OPERFTIO

---[_

FOR

PER

115
LOA}

ONLY
TO

6
THE

OUTDOOR UNIT
(NO TRANSFORMER)

R_4EPLATE{S}

NO
EO_,PLY

_NTICIPAT,OR

tqAX

I O:x

MUST

PROVI[E

C/IRE

EOUlPbIEqT
TO

IPk,IEtT
HEJiT

LEADS

CONNECT

,#ITH

¢_1_<1_,3)

HUbIIDIFIE_

THIS

C_/_.

AGREES
V

THERqOST_T

THE

@
Fq

POWER

VOLTAGE(24

GROJNDING

.........
[_]_
/10

JUMPER

_£CREW

TOW2

_._--

2NDSTAGEWILL'FIRE
MINUTES

AFTER

'11
1ST

TO115V1PH,,
SUPPLY

r .....
LH

PER

FUR NACE
_ _,K
r JUNCTION
B,,_-,_,j-_

_,_
I

BOX

wN /I
I

SEE
LOCAL

.NO_T_E_6_
.__@

•
I

INTER

COMPONENT
;>4

----

LINE
24

,/.

LINE

.UMSEE

NO,E
L. K

F U Td

--,

_% FIELD
i.y

_/.

WIRING

CODES

Y,_'N_IIX_
!, FACTORY

From

drawing

B342022

Rv 0

_Yv]I
Source Exif Data:
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