Payne PG8J/M User Manual
PG8JAA
PG8MAA
Installation, Start---up, Operating, and
SINGLE --- ST AGE DELUXE
INDUCED --- COMBUSTION
4-- -WAY MUL TIPOISE GAS FURNACE
Service and Maintenance
Instructions Series 130/D
SAFETY CONSIDERATIONS 2........................
INTRODUCTION 3..................................
CODES AND STANDARDS 4..........................
Safety 4.........................................
General Installation 5...............................
Combustion and Ventilation Air 5.....................
Duct Systems 5...................................
Acoustical Lining and Fibrous Glass Duct 5.............
Gas Piping and Gas Pipe Pressure Testing 5.............
Electrical Connections 5............................
Venting 5........................................
LOCATION 6.......................................
AIR FOR COMBUSTION AND VENTILATION 8.........
INSTALLATION 11..................................
Bottom Return Air Inlet 11..........................
Side Return Air Inlet 11.............................
Leveling Legs (If Desired) 11........................
Bottom Return Air Inlet 12..........................
Suspended Furnace Support 12.......................
Platform Furnace Support 13.........................
Roll-- Out Protection 13.............................
Bottom Return Air Inlet 13..........................
Side Return Air Inlet 13.............................
General Requirements 14............................
Ductwork Acoustical Treatment 14....................
Supply Air Connections 14..........................
Return Air Connections 20..........................
START--UP, ADJUSTMENT, AND SAFETY CHECK 31.....
General 31.......................................
Start--Up Procedures 31.............................
Adjustments 34...................................
Check Safety Controls 37...........................
Checklist 38......................................
SERVICE AND MAINTENANCE PROCEDURES 46.......
Introduction 46...................................
Care and Maintenance 46...........................
Sequence of Operation 50...........................
Wiring Diagrams 51...............................
Troubleshooting 51................................
ama
ISO 9001:2000
CERTIFIED
REGISTERED
NOTE: Read the entire instruction manual before starting the
installation.
Portions of the text and tables are reprinted from NFPA 54/ANSI
Z223.1--2006E, with permission of Nation Fire Protection
Association, Quincy, MA 02269 and American Gas Association,
Washington DC 20001. This reprinted material is not the
complete and official position of the NFPA or ANSI on the
referenced subject, which is represented only by the standard in
its entirely.
SAFETY CONSIDERATIONS
!
WARNING
FIRE, EXPLOSION, ELECTRICAL SHOCK, AND
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal
injury, death, or property damage.
Improper installation, adjustment, alteration, service,
maintenance, or use can cause carbon monoxide poisoning,
explosion, fire, electrical shock, or other conditions which
may cause personal injury or property damage. Consult a
qualified service agency, local gas supplier, or your
distributor or branch for information or assistance. The
qualified service agency must use only factory--authorized
and listed kits or accessories when modifying this product.
PG8J/M
FURNACE RELIABILITY HAZARD
Failure to follow this caution may result in unit component
damage.
Application of this furnace should be indoors with special
attention given to vent sizing and material, gas input rate,
air temperature rise, unit leveling, and unit sizing.
CUT HAZARD
Failure to follow this caution may result in personal injury .
Sheet metal parts may have sharp edges or burrs. Use care
and wear appropriate protective clothing, safety glasses and
gloves when handling parts, and servicing furnaces.
Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical shock, or
other conditions which may cause death, personal injury, or
property damage. Consult a qualified installer, service agency, or
your distributor or branch for information or assistance. The
qualified installer or agency must use factory--authorized kits or
accessories when modifying this product. Refer to the individual
instructions packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warnings or cautions
include in literature and attached to the unit. Consult local
building codes, the current editions of the National Fuel Gas
Code (NFGC) NFPA 54/ANSI Z223.1 and the National
Electrical Code (NEC) NFPA 70.
In Canada, refer to the current editions of the National Standards
of Canada CAN/CSA--B149.1 and .2 Natural Gas and Propane
Installation Codes, and Canadian Electrical Code CSA C22.1
Recognize safety information. This is the safety--alert symbol
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING,and
CAUTION. These words are used with the safety--alert symbol.
!
CAUTION
!
CAUTION
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is
used to identify unsafe practices which may result in minor
personal injury or product and property damage. NOTE is used
to highlight suggestions which will result in enhanced
installation, reliability, or operation.
1. Use only with 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 the “Location” section of these instructions.
3. Provide adequate combustion and ventilation air to the
furnace space as specified in “Air for Combustion and
Ventilation” section.
4. Combustion products must be discharged outdoors. Connect this furnace to an approved vent system only, as specified in the “Ve nting” section 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.
6. Always install 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 in the “Start--Up, Adjustments, and Safety
Check” section. See furnace rating plate.
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
duct(s) sealed to the furnace casing and terminating outside the space containing the furnace. See “Air Ducts” section.
8. A gas--fired furnace for installation in a residential garage
must be installed as specified in the warning box in the
“Location” section.
9. The furnace may be used for construction heat provided
that the furnace installation and operation complies with
the first CAUTION in the LOCATION section of these instructions.
10. These Multipoise Gas--Fired Furnaces are CSA (formerly
A.G.A. and C.G.A.) design--certified for use with natural
and propane gases (see furnace rating plate) and for installation in alcoves, attics, basements, closets, utility rooms,
crawlspaces, and garages. The furnace is factory--shipped
for use with natural gas. A CSA (A.G.A. and C.G.A.) listed accessory gas conversion kit is required to convert furnace for use with propane gas.
11. See Fig. 1 for required clearances to combustible construction.
12. Maintain a 1 --in. (25 mm) clearance from combustible materials to supply air ductwork for a distance of 36 in. (914
mm) horizontally from the furnace. See NFPA 90B or local code for further requirements.
13. These furnaces SHALL NOT be installed directly on carpeting, tile, or any other combustible material other than
wood flooring. In downflow installations, factory accessory floor base MUST be used when installed on combustible materials and wood flooring. Special base is not required when this furnace is installed on manufacturer’s
.
Coil Assembly Part No. CNPV, CNRV, CAR or CAP or
when Coil Box Part No. KCAKC is used. See Fig. 1 for
clearance to combustible construction information.
2
(FLUE COLLAR)
(
7/8" DI A
ACCESSORY
(664mm)
26-1/8"
(22mm)
5-15/16"
33-5/16"
(846mm)
(733mm)
28-7/8"
(641mm)
25-1/4"
22-9/16"
(573mm)
JUNCTION BOX
LOCATION
1/2" DIA THERMOSTAT
WIRE ENTRY
3-15/16"
LEFT HAND GAS
ENTRY
7/8" DIA. ACCESSORY
24-7/8"
(632mm)
F
A
D
13/16"
(21mm)
4-13/16"
(122mm)
(217mm)
ALTERNA T E
JUNCTION BOX
LOCATIONS (TYP)
VENT OUTLE T
5 PLACES (TYP)
(140mm)
5-1/2"
8-9/16"
2-7/16"
(62mm)
1-5/16"
(33mm)
1-1/8"
(29mm)
AIRFLOW
19"
(483mm)
OUTLE T
1/2" DIA. K.O.THERMOSTA T
WIRE ENTRY
7/8" DIA. K.O. WIRE ENTR Y
(22mm)
7/8" DIA. ACCESSORY
(22mm)
(13mm)
1-3/4" DIA.RIGHT HAND
GAS ENTRY
(44mm)
13/16"
(21mm)
11/16"
(17mm)
14-7/8"
(378mm)
7-3/4"
(197mm)
9-5/8"
(244mm)
11-1/2"
(292mm)
11/16"
(17mm)
NOTES:
1. Two additional 7/8--- in. (22 mm) diameter holes are located in the top plate.
2. Minimum return ---air openings at furnace, based on metal duct. If flex duct is used, see flex duct manufacturer’s recommendations for equivalent diameters.
a. For 800 CFM --- 16--- in. (406 mm) round or 14 1/2 x 12 --- in. (368 x 305 mm) rectangle.
b. For 1200 CFM --- 20--- in. (508 mm) round or 14 1/2 x 19 1/2 ---in. (368 x 495 mm) rectangle.
c. For 1600 CFM --- 22--- in. (559 mm) round or 14 1/2 x 22 1/16 ---in. (368 x 560mm) r ectangle.
d. For airflow requirements above 1800 CFM, see Air Delivery table in Product Da ta literature for specific use of single side inlets. The use of both sideinlets,a
combination of 1 side and the bottom, or the bottom only will ensure adequate r etu r n air openings for airflow requirements above 1800 CFM.
(549mm)
21-5/8"
BOTTOM INLE T
24"
CASING
610mm)
1-11/16"
(43mm)
5-1/2"
(140mm)
E
11/16"
(17mm)
3-3/4"
(95mm)
1-1/2"
(560mm)
22-1/16"
SIDE INLE T
(38mm)
1-1/4"
(32mm)
1"
(25mm)
A04037
Fig. 1 --- Dimensional Drawing
INTRODUCTION
Series 130/D 4--way multipoise Category I fan--assisted furnace is
CSA design-- certified. A Category I fan--assisted furnace is an
appliance equipped with an integral mechanical means to either
draw or force products of combustion through the combustion
chamber and/or heat exchanger. The furnace is factory--shipped
for use with natural gas. This furnace is not approved for
This furnace is designed for minimum continuous return--air
temperature of 60_F(16_C) db or intermittent operation down to
55_F(13_C) db such as when used with a night setback
thermostat. Return--air temperature must not exceed 85_F(29_C)
db. Failure to follow these return-- air temperature limits may
affect reliability of heat exchangers, motors, and controls. (See
Fig. 3.)
installation in mobile homes, recreational vehicles, or outdoors.
Table 1—Dimensions -- In. (mm)
FURNACE SIZE A
CABINET WIDTH
IN (mm)
045 --- 08/024045 14--- 3/16 (360) 12---9/16 (319) 12---11/16 (322) 9---5/16 (237) 4 (102) 104 (47)
045 --- 12/036045 14--- 3/16 (360) 12---9/16 (319) 12---11/16 (322) 9---5/16 (237) 4 (102) 107 (48)
070 --- 08/024070 14--- 3/16 (360) 12---9/16 (319) 12---11/16 (322) 9---5/16 (237) 4 (102) 111 (50)
070 --- 12/036070 14--- 3/16 (360) 12---9/16 (319) 12---11/16 (322) 9---5/16 (237) 4 (102) 115 (52)
070 --- 16/048070 17---1/2 (445) 15---7/8 (403) 16 (406) 11---9/16 (294) 4 (102) 126 (57)
090 --- 14/042090 17---1/2 (445) 15---7/8 (403) 16 (406) 11---9/16 (294) 4 (102) 127 (58)
090 --- 16/048090 21 (533) 19---3/8 (492) 19--- 1/2 (495) 13---5/16 (338) 4 (102) 140 (64)
090 --- 20/060090 21 (533) 19---3/8 (492) 19--- 1/2 (495) 13---5/16 (338) 4 (102) 146 (66)
110 --- 12/036110 17---1/2 (445) 15---7/8 (403) 16 (406) 11---9/16 (294) 4 (102) 135 (61)
110 --- 16/048110 21 (533) 19---3/8 (492) 19--- 1/2 (495) 13---5/16 (338) 4 (102) 146 (66)
110 --- 22/066110 21 (533) 19---3/8 (492) 19--- 1/2 (495) 13---5/16 (338) 4 (102) 152 (69)
135 --- 16/048135 21 (533) 19---3/8 (492) 19--- 1/2 (495) 13---5/16 (338) 4 (102) 149 (68)
135 --- 22/066135 24---1/2 (622) 22---7/8 (581) 23 (584) 15---1/16 (383) 4 (102) 163 (74)
155 --- 20/060155 24---1/2 (622) 22---7/8 (581) 23 (584) 15---1/16 (383) 4 (102) 170 (77)
* 5---in. or 6--- in. (127 or 152 mm) vent connector may be required in some cases.
D
SUPPLY--- AIR
WIDTH
IN (mm)
E
RETURN---AIR
WIDTH
IN (mm)
F
C.L. TOP AND
BOTTOM FLUE
COLLAR
IN (mm)
FLUE
COLLAR*
IN (mm)
SHIP WT
LB (KG)
PG8J/M
3
PG8J/M
Fig. 2 --- Clearances to Combustibles
60
Fig. 3 --- Return Air Temperature
For accessory installation details, refer to the applicable
instruction literature.
80 / 27 C
/ 16 C
A06745
A08471
NOTE: Remove all shipping brackets and materials before
operating the furnace.
CODES AND STANDARDS
Follow all national and local codes and standards in addition
to these instructions. The installation must comply with
regulations of the serving gas supplier, local building, heating,
plumbing, and other codes. In absence of local codes, the
installation must comply with the national codes listed below and
all authorities having jurisdiction. In the United States and
Canada, follow all codes and standards for the following:
Step 1 —Safety
US: National Fuel Gas Code (NFGC) NFPA
S
54--2006/ANSI Z223.1-- 2006 and the Installation
Standards, Warm Air Heating and Air Conditioning
Systems ANSI/NFPA 90B
S CANADA: CSA B149.1--05 National Standard of
Canada Natural Gas and Propane Installation Codes
(CAN/CSA--B149.1--05)
Step 2 —General Installation
4
S US: Current edition of the NFGC and the NFPA 90B.
For copies, contact the National Fire Protection Association Inc., Batterymarch Park, Quincy, MA 02269;
(www.NFPA.org) or for only the NFGC, contact the
American Gas Association, 400 N. Capitol Street,
N.W., Washington, DC 20001 (www.AGA.org).
S CANADA: CAN/CSA-- B149.1 --05. For a copy, con-
tact Standard Sales, CSA International, 178 Rexdale
Boulevard, Etobicoke (Toronto), Ontario, M9W 1R3
Canada
Step 3 —Combustion and Ventilation Air
US: Section 9.3 of the NFGC, NFPA 54 / ANSI
S
Z223.1--2006 Air for Combustion and Ventilation
S CANADA: Part 8 of CAN/CSA--B149.1 --05, Venting
Systems and Air Supply for Appliances
Step 4 —Duct Systems
US and CANADA: Air Conditioning Contractors As-
S
sociation (ACCA) Manual D, Sheet Metal and Air
Conditioning Contractors National Association
(SMACNA), or American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE)
2001 Fundamentals Handbook Chapter 34 or 2000
HVAC Systems and Equipment Handbook Chapters 9
and 16.
Step 5 —Acoustical Lining and Fibrous Glass
Duct
US and CANADA: current edition of SMACNA and
S
NFPA 90B as tested by UL Standard 181 for Class I
Rigid Air Ducts
Step 6 —Gas Piping and Gas Pipe Pressure
Test in g
US: NFGC; NFPA 54 / ANSI Z223.1-- 2006 chapters 5,
S
6, 7 and 8 and National Plumbing Codes
S CANADA: CAN/CSA--B149.1--05 Parts 4, 5, and 6
and Appendices A, B, E, and H.
Step 7 —Electrical Connections
US: National Electrical Code (NEC) ANSI/NFPA
S
70--2008
S CANADA: Canadian Electrical Cod e CSA C2 2.1
Step 8 —Vent ing
US: NFGC NFPA 54 / ANSI Z223.1-- 2006; chapters
S
12 and 13
S CANADA: CAN/CSA--B149.1--05 Part 8 and Ap-
pendix C
ELECTROSTATIC DISCHARGE (ESD)
PRECAUTIONS PROCEDURE
!
FURNACE RELIABILITY HAZARD
Failure to follow this caution may result in furnace
component damage.
Electrostatic discharge can affect electronic components.
Follow the Electrostatic Discharge Precautions Procedure
listed below during furnace installation and servicing to
protect the furnace electronic control. Precautions will
prevent electrostatic discharges from personnel and hand
tools which are held during the procedure. These
precautions will help to avoid exposing the control to
electrostatic discharge by putting the furnace, the control,
and the person at the same electrostatic potential.
1. Disconnect all power to the furnace. Multiple disconnects
may be required. DO NOT TOUCH THE CONTROL OR
ANY WIRE CONNECTED TO THE CONTROL PRIOR
TO DISCHARGING YOUR BODY’S
ELECTROSTATIC CHARGE TO GROUND.
2. Firmly touch the clean, unpainted, metal surface of the furnace chassis which is close to the control. Tools held in a
person’s hand during grounding will be satisfactorily discharged.
3. After touching the chassis, you may proceed to service the
control or connecting wires as long as you do nothing to
recharge your body with static electricity (for example;
DO NOT move or shuffle your feet, do not touch ungrounded objects, etc.).
4. If you touch ungrounded objects (and recharge your body
with static electricity), firmly touch a clean, unpainted
metal surface of the furnace again before touching control
or wires.
CAUTION
PG8J/M
5
THE BLOWER IS LOCATED
TO THE RIGHT OF THE
BURNER SECTION, AND
AIR CONDITIONED AIR IS
DISCHARGED TO THE LEFT.
THE BLOWER IS
LOCATED BELOW THE
BURNER SECTION, AND
CONDITIONED AIR IS
DISCHARGED UPWARD.
THE BLOWER IS
LOCATED ABOVE THE
BURNER SECTION, AND
PG8J/M
CONDITIONED AIR IS
DISCHARGED DOWNWARD
5. Use this procedure for installed and uninstalled (ungrounded) furnaces.
6. Before removing a new control from its container, discharge your body’s electrostatic charge to ground to protect the control from damage. If the control is to be installed in a furnace, follow items 1 through 4 before
bringing the control or yourself in contact with the furnace. Put all used and new controls into containers before
touching ungrounded objects.
7. An ESD service kit (available from commercial sources)
mayalsobeusedtopreventESDdamage.
LOCATION
!
CARBON MONOXIDE POISONING AND UNIT
DAMAGE HAZARD
Failure to follow this warning could result in personal
injury or death, and unit component damage.
Corrosive or contaminated air may cause failure of parts
containing flue gas, which could leak into the living space.
Air for combustion must not be contaminated by halogen
compounds, which include fluoride, chloride, bromide, and
iodide. These elements can corrode heat exchangers and
shorten furnace life. Air contaminants are found in aerosol
sprays, detergents, bleaches, cleaning solvents, salts, air
fresheners, and other household products. Do not install
furnace in a corrosive or contaminated atmosphere. Make
sure all combustion and circulating air requirements are met,
in addition to all local codes and ordinances.
GENERAL
This multipoise furnace is shipped in packaged configuration.
Some assembly and modifications are required when used in any
of the four applications shown in Fig. 4.
This furnace must:
S be installed so the electrical components are protected
from water.
WARNING
THE BLOWER IS
LOCATED TO THE LEFT
OF THE BURNER SECTION,
AND CONDITIONED AIR IS
DISCHARGED TO THE RIGHT.
A02097
Fig. 4 --- Multipoise Orientations
S not be installed directly on any combustible material
other than wood flooring (refer to SAFETY
CONSIDERATIONS).
S be located as close to the chimney or vent and attached
to an air distribution system. Refer to Air Ducts section.
S be provided ample space for servicing and cleaning.
Always comply with minimum fire protection clearances shown on the furnace clearance to combustible
label.
S The following types of furnace installations may re-
quire OUTDOOR AIR for combustion due to chemical
exposures:
S Commercial buildings
S Buildings with indoor pools
S Laundry rooms
S Hobby or craft rooms, and
S Chemical storage areas
If air is exposed to the following substances, it should not be used
for combustion air, and outdoor air may be required for
combustion:
S Permanent wave solutions
S Chlorinated waxes and cleaners
S Chlorine based swimming pool chemicals
S W ater softening chemicals
S De--icing salts or chemicals
S Carbon tetrachloride
S Halogen type refrigerants
S Cleaning solvents (such as perchloroethylene)
S Printing inks, paint removers, varnishes, etc.
S Hydrochloric acid
S Cements and glues
S Antistatic fabric softeners for clothes dryers
S Masonry acid washing materials
6
All fuel--burning equipment must be supplied with air for fuel
combustion. Sufficient air must be provided to avoid negative
pressure in the equipment room or space. A positive seal must be
made between the furnace cabinet and the return -- air duct to
prevent pulling air from the burner area and from draft safeguard
opening.
!
FIRE AND EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death, and/or property damage.
When the furnace is installed in a residential garage, the
burners and ignition sources must be located at least 18
inches above the floor. The furnace must be located or
protected to avoid damage by vehicles. When the furnace is
installed in a public garage, airplane hangar, or other
building having a hazardous atmosphere, the furnace must
be installed in accordance with the NFGC or
CAN/CSA-- B149.1-- 05. (See Fig. 5.)
PERSONAL INJURY AND/OR PROPERTY
DAMAGE HAZARD
Failure to follow this caution may result in furnace
component damage.
This gas furnace may be used for heating buildings under
construction provided that:
--The furnace is permanently installed with all electrical
wiring, piping, venting and ducting installed according to
these installation instructions. A return air duct is provided,
sealed to the furnace casing, and terminated outside the
space containing the furnace. This prevents a negative
pressure condition as created by the circulating air blower,
causing a flame rollout and/or drawing combustion
products into the structure.
-- The furnace is controlled by a thermostat. It may not be
hot wired to provide heat continuously to the structure
without thermostatic control.
--Clean outside air is provided for combustion. This is to
minimize the corrosive effects of adhesives, sealers and
other construction materials. It also prevents the
entrainment of drywall dust into combustion air, which can
cause fouling and plugging of furnace components.
--The temperature of the return air to the furnace is
maintained between 55_F(13_C) and 80_F(27_C), with
no evening setback or shutdown. The use of the furnace
while the structure is under construction is deemed to be
intermittent operation per our installation instructions.
--The air temperature rise is within the rated rise range on
the furnace rating plate, and the gas input rate has been set
to the nameplate value.
--The filters used to clean the circulating air during the
construction process must be either changed or thoroughly
cleaned prior to occupancy.
--The furnace, ductwork and filters are cleaned as necessary
to remove drywall dust and construction debris from all
HVAC system components after construction is completed.
-- Verify proper furnace operating conditions including
ignition, gas input rate, air temperature rise, and venting
according to these installation instructions.
WARNING
!
CAUTION
18-IN. (457.2 mm)
MINIMUM TO BURNERS
A93044
Fig. 5 --- Installation in a Garage
!
FIRE HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Do not install the furnace on its back or hang furnace with
control compartment facing downward. Safety control
operation will be adversely affected. Never connect
return--air ducts to the back of the furnace. (See Fig. 6.)
Fig. 6 --- Prohibit Installation on Back
LOCATION RELATIVE TO COOLING EQUIPMENT
The cooling coil must be installed parallel with, or on the
downstream side of the unit to avoid condensation in the heat
exchangers. When installed parallel with the furnace, dampers or
other flow control must prevent chilled air from entering the
furnace. If the dampers are manually operated, they must be
equipped with means to prevent operation of either unit unless
the damper is in the full--heat or full--cool position.
WARNING
A02054
AIR FOR COMBUSTION AND
VENTILATION
Provisions for adequate combustion, ventilation, and dilution air
must be provided in accordance with:
S U.S. installations: Section 9.3 of the NFPA 54 / ANSI
Z223.1--2006, Air for Combustion and Ventilation, and
applicable provisions of the local building codes.
S Canadian installations: Part 8 of CAN/CSA--
B149.1--05, Venting Systems and Air Supply for Appliances, and all authorities having jurisdiction.
PG8J/M
7
!
CAUTION
FURNACE CORROSION HAZARD
Failure to follow this caution may result in furnace damage.
Air for combustion must not be contaminated by halogen
compounds, which include fluoride, chloride, bromide, and
iodide. These elements can corrode heat exchangers and
shorten furnace life. Air contaminants are found in aerosol
sprays, detergents, bleaches, cleaning solvents, salts, air
fresheners, and other household products.
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal
injury or death.
The operation of exhaust fans, kitchen ventilation fans,
clothes dryers, attic exhaust fans or fireplaces could create a
PG8J/M
NEGATIVE PRESSURE CONDITION at the furnace.
Make--up air MUST be provided for the ventilation devices,
in addition to that required by the furnace. Refer to Carbon
Monoxide Poisoning Hazard warning in venting section of
these instructions to determine if an adequate amount of
make--up air is available.
The requirements for combustion and ventilation air depend
upon whether or not the furnace is located in a space having a
volume of at least 50 cu/ft. per 1,000 Btuh input rating for all gas
appliances installed in the space.
WARNING
S Spaces having less than 50 cu/ft. per 1,000 Btuh re-
quire the OUTDOOR COMBUSTION AIR
METHOD.
S Spaces having at least 50 cu/ft. per 1,000 Btuh may use
the INDOOR COMBUSTION AIR, STANDARD or
KNOWN AIR INFILTRATION METHOD.
Outdoor Combustion Air Method
1. Provide the space with sufficient air for proper combustion, ventilation, and dilution of flue gases using permanent horizontal or vertical duct(s) or opening(s) directly
communicating with the outdoors or spaces that freely
communicate with the outdoors.
2. Fig. 7 illustrates how to provide TWO OUTDOOR
OPENINGS, one inlet and one outlet combustion and
ventilation air opening, to the outdoors.
a. One opening MUST commence within 12 in. (300
mm) of the ceiling and the second opening MUST
commence within 12 in. (300 mm) of the floor.
b. Size openings and ducts per Fig. 7 and Table 2.
c. TWO HORIZONTAL DUCTS require 1 sq./in. of free
area per 2,000 Btuh (1,100 mm
input for all gas appliances in the space per Fig. 7 and
Tab le 2.
d. TWO OPENINGS OR VERTICAL DUCTS require 1
sq./in. of free area per 4,000 Btuh (550 mm
combined input of all gas appliances in the space per
Fig. 7 and Table 2.
3. ONE OUTDOOR OPENING requires:
a. 1 square inch of free area per 3,000 Btuh (734
mm2/kW) for combined input of all gas appliances in
the space per Table 2 and
b. Not less than the sum of the areas of all vent connect-
ors in the space.
The opening shall commence within 12 in. (300 mm) of the
ceiling. Appliances in the space shall have clearances of at least 1
in. (25 mm) from the sides and back and 6 in. (150 mm) from the
front. The opening shall directly communicate with the outdoors
or shall communicate through a vertical or horizontal duct to the
outdoors or spaces (crawl or attic) that freely communicate with
the outdoors.
Indoor Combustion Air NFPA & AGA
Standard and Known--Air--Infiltration Rate Methods
Indoor air is permitted for combustion, ventilation, and dilution,
if the Standard or Known--Air--Infiltration Method is used.
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in death and/or
personal injury.
Many homes require air to be supplied from outdoors for
furnace combustion, ventilation, and dilution of flue gases.
The furnace combustion air supply must be provided in
accordance with this instruction manual.
WARNING
2
/kW) of combined
2
/kW) for
8
Table 2—Minimum Free Area Required for Each Combustion Air Opening of Duct to Outdoors
FURNACE
INPUT
(BTUH)
44,000 22 (14194) 6 (152) 14.7 (9484) 5 (127) 11 (7096) 4 (102)
66,000 33 (21290) 7 (178) 22 (14193) 6 (152) 16.5 (10645) 5 (127)
88,000 44 (28387) 8 (203) 29.3 (18903) 7 (178) 22 (14193) 6 (152)
110,000 55 (35484) 9 (229) 36.7 (23677) 7 (178) 27.5 (17742) 6 (152)
132,000 66 (42580) 10 (254) 44 (28387) 8 (203) 33 (21290) 7 (178)
154,000 77 (49677) 10 (254) 51.3 (33096) 9 (229) 38.5 (24839) 8 (203)
TWO HOR IZONTAL DUCTS SINGLE DUCT OR OPENING TWO OPENINGS OR VERTICAL DUCTS
(1 SQ. IN./2,000 BTUH) (1,100 SQ. MM/KW) (1 SQ. IN./3,000 BTUH) (734 SQ. MM/KW) (1 SQ. IN./4,000 BTUH) (550 SQ. MM/KW)
Free Area of Opening
and Duct
Sq. In. (Sq. mm)
Round Duct
Dia.
In. (mm)
Free Area of Opening
and Duct
Sq. In. (Sq. mm)
Round Duct
Dia.
In. (mm)
Free Area of Opening
and Duct
Sq. In. (Sq. mm)
Round Duct
Dia.
In. (mm)
EXAMPLES: Determining Free Area
FURNACE WATER HEATER TOTAL INPUT
110,000 + 30,000 = (140,000 divided by 4,000) = 35.0 Sq. In. for each two Vertical Ducts or Openings
66,000 + 40,000 = (106,000 divided by 3,000) = 35.3 Sq. In. for a Single Duct or Opening
88,000
ACH
0.60
0.50
0.40
0.30
0.20
0.10
0.00
NP = Not Permitted
+ 30,000 = (118,000 divided by 2,000) = 59.0 Sq. In. for each of two Horizontal Ducts
Table 3—Minimum Space Volumes for 100% Combustion, Ventilation, and Dilution from Indoors
OTHER THAN FAN-ASSISTED TOTAL
(1,000’S BTUH GAS INPUT RATE)
30 40 50 44 66 88 110 132 154
1,050
(29.7)
1,260
(35.6)
1,575
(44.5)
2,100
(59.4)
3,150
(89.1)
6,300
(178.3)
NP NP NP NP NP NP NP NP NP
1,400
(39.6)
1,680
(47.5)
2,100
(59.4)
2,800
(79.2)
4,200
(118.9)
8,400
(237.8)
5,250 (148.6)
1,750
(49.5)
2,100
(59.4)
2,625
(74.3)
3,500
(99.1)
10,500
(297.3)
SpaceVolumeFt3(M3)
1,100
(31.1)
1,320
(37.3)
1,650
(46.7)
2,200
(62.2)
3,300
(93.4)
6,600
(186.8)
1,650
(46.7)
1,980
(56.0)
2,475
(70.0)
3,300
(93.4)
4,950
(140.1)
9,900
(280.3)
FAN-ASSISTED TOTAL
(1,000’S BTUH GAS INPUT RATE)
2,200
(62.2)
2,640
(74.7)
3,300
(93.4)
4,400
(124.5)
6,600
(186.8)
13,200
(373.7)
2,750
(77.8)
3,300
(93.4)
4,125
(116.8)
5,500
(155.7)
8,250
(233.6)
16,500
(467.2)
3,300
(93.4)
3,960
(112.1)
4,950
(140.1)
6,600
(186.8)
9,900
(280.3)
19,800
(560.6)
3,850
(109.0)
4,620
(130.8)
5,775
(163.5)
7,700
(218.0)
11,550
(327.0)
23,100
(654.1)
PG8J/M
9
1 SQ IN.
E
12 ″ MAX
(305mm)
PER 4000
BTUH*
F
G
1 SQ IN.
PER 4000
BTUH*
DUCTS
TO
O UTDOORS
(305mm)
12 ″ MAX
1 SQ IN.
PER 2000
BTUH*
DUCT S
TO
OUTDOORS
1 SQ IN.
PER 2000
BTUH*
(305mm)
PG8J/M
12 ″ MAX
CIRCULA TING AIR DUCT S
*Minimum dimensions of 3--- in. (76 mm).
NOTE: Use any of the following combinations of openings:
A&BC&DD&EF&G
B
AIR DUCTS
C IRCULA TING
A
OF COMB USTION AIR
CLEARANCE IN FRONT
D
VENT
THR OUGH
R OOF
(76mm)
AT LEAST 3 IN .
OPENINGS SHALL BE
C
DUCT
TO
OUTDOORS
Fig. 7 --- Air for Combustion, Ventilation, and Dilution for
Outdoors
12 ″
MAX
1 SQ IN .
PER
4000
BTUH*
OUTDOORS
1 SQ IN .
PER
4000
BTUH*
12 ″
MAX
(305mm)
(305mm)
A03174
CIRCULATING AIR
DUCTS
INTERIOR
HEATED
SPACE
CIRCULATING AIR DUCTS
* Minimum opening size is 100 sq in. (64516 sq. mm)with minimum dimensions
of3in.(76mm)
†Minimumof3in.(76mm)whentype-B1ventisused.
VENT THROUGH ROOF
12" MAX
1 SQ IN.
PER 1000
BTUH* IN DOOR
OR WALL
UNCONFINED
SPACE
(152mm)
6" MIN
(FRONT)
1 SQ IN.
PER 1000
BTUH* IN DOOR
OPENINGS SHALL BE AT LEAST 3 IN.
OR WALL
CLEARANCE IN FRONT OF COMBUSTION AIR
12" MA X
(305mm)
Ü
(305mm)
A03175
Fig. 8 --- Air for Combustion, Ventilation, and Dilution from
Indoors
The Standard Method:
1. The space has no less volume than 50 cu/ft. per 1,000
Btuh of the maximum input ratings for all gas appliances
installed in the space and
2. The air infiltration rate is not known to be less than 0.40
air changes per hour (ACH).
The Known Air Infiltration Rate Method shall be used, if the
infiltration rate is known to be:
1. Less than 0.40 ACH and
2. Equal to or greater than 0.10 ACH
Infiltration rates greater than 0.60 ACH shall not be used. The
minimum required volume of the space varies with the number of
ACH and shall be determined per Table 3 or Equations 1 and 2.
Determine the minimum required volume for each appliance in
the space and add the volumes together to get the total minimum
required volume for the space.
Table 3--Minimum Space Volumes were determined by using
the following equations from the National Fuel Gas Code ANSI
Z223.1--2006/NFPA 54--2006, 9.3.2.2:
1. For other than fan--assisted appliances, such as a draft
hood--equipped water heater:
Volume
Other
=
21ft
ACH
3
I
other
1000 Btu/hr
A04002
2. For fan--assisted appliances such as this furnace:
Volume
Fan
=
15ft
ACH
3
I
fan
1000 Btu/hr
A04003
If:
I
other = combined input of all other than fan--assisted
appliances in Btuh/hr
I
fan = combined input of all fan--assisted appliances in Btuh/hr
ACH = air changes per hour (ACH shall not exceed 0.60.) The
following requirements apply to the Standard Method and to the
Known Air Infiltration Rate Method.
1. Adjoining rooms can be considered part of a space if:
a. There are no closeable doors between rooms.
b. Combining spaces on same floor level. Each opening
shall have free area of at least 1 in.
2
/kW) of the total input rating of all gas appliances
mm
in the space, but not less than 100 in.
2
/1,000 Btuh (2,000
2
(0.06 m2). One
opening shall commence within 12 in. (300 mm) of
the ceiling and the second opening shall commence
within 12 in. (300 mm) of the floor. The minimum
dimension of air openings shall be at least 3 in. (80
mm).(SeeFig.8.)
c. Combining space on different floor levels. The
volumes of spaces on different floor levels shall be
considered as communicating spaces if connected by
one or more permanent openings in doors or floors
having free area of at least 2 in.
2
/kW) of total input rating of all gas appliances.
mm
2
/1,000 Btuh (4,400
2. An attic or crawlspace may be considered a space that
freely communicates with the outdoors provided there are
adequate permanent ventilation openings directly to outdoors having free area of at least 1--in.
2
/4,000 Btuh of total
input rating for all gas appliances in the space.
3. In spaces that use the Indoor Combustion Air Method, infiltration should be adequate to provide air for combustion, permanent ventilation and dilution of flue gases.
However, in buildings with unusually tight construction,
additional air MUST be provided using the methods describedintheOutdoor Combustion Air Method section.
10
Unusually tight construction is defined as Construction with:
a. Walls and ceilings exposed to the outdoors have a con-
tinuous, sealed vapor barrier. Openings are gasketed or
sealed and
b. Doors and openable windows are weatherstripped and
c. Other openings are caulked or sealed. These include
joints around window and door frames, between sole
plates and floors, between wall--ceiling joints, between
wall panels, at penetrations for plumbing, electrical
and gas lines, etc.
Combination of Indoor and Outdoor Air
1. Indoor openings shall comply with the Indoor Combus-
tion Air Method below and,
2. Outdoor openings shall be located as required in the Out-
door Combustion Air Method mentioned previously and,
3. Outdoor openings shall be sized as follows:
a. Calculate the Ratio of all Indoor Space volume divided
by required volume for Indoor Combustion Air
Method below.
b. Outdoor opening size reduction Factor is 1 minus the
Ratio in a. above.
c. Minimum size of Outdoor openings shall be the size
required in Outdoor Combustion Air Method above
multiplied by reduction Factor in b. above. The minimum dimension of air openings shall be not less than
3in.(80mm).
INSTALLATION
UPFLOW INSTALLATION
Bottom Return Air Inlet
These furnaces are shipped with bottom closure panel installed in
bottom return--air opening. Remove and discard this panel when
bottom return air is used. To remove bottom closure panel,
perform the following:
1. Tilt or raise furnace and remove 2 screws holding bottom
filler panel. (See Fig. 9.)
A02098
Fig. 9 --- Removing Bottom Closure Panel
2. Rotate bottom filler panel downward to release holding
tabs.
3. Remove bottom closure panel.
4. Reinstall bottom filler panel and screws.
Side Return Air Inlet
These furnaces are shipped with bottom closure panel installed in
bottom return--air opening. This panel MUST be in place when
only side return air is used.
NOTE: Side return--air openings can be used in UPFLOW and
most HORIZONTAL configurations. Do not use side return-- air
openings in DOWNFLOW configuration.
In upflow position with side return inlet(s), leveling legs may be
used. (See Fig. 10.) Install field--supplied, 5/16 x 1--1/2 in. (8 x
38 mm) (max) corrosion--resistant machine bolts, washers and
nuts.
NOTE: Bottom closure must be used when leveling legs are
used. It may be necessary to remove and reinstall bottom closure
panel to install leveling legs. To remove bottom closure panel, see
Item 1. in Bottom Return Air Inlet section.
5/
16
″
(8mm)
(8mm)
5/
16
″
1 3 / 4 ″
(44mm)
3
1
/ 4 ″
(44mm)
(8mm)
5
/
16
″
(8mm)
5/
16
″
1
(44mm)
3/
4 ″
3/
1
4 ″
(44mm)
Fig. 10 --- Leveling Legs
Leveling Legs (If Desired)
To install leveling legs:
1. Position furnace on its back. Locate and drill a hole in
each bottom corner of furnace. (See Fig. 10.)
2. For each leg, install nut on bolt and then install bolt and
nut in hole. (Install flat washer if desired.)
3. Install another nut on other side of furnace base. (Install
flat washer if desired.)
4. Adjust outside nut to provide desired height, and tighten
inside nut to secure arrangement.
5. Reinstall bottom closure panel if removed.
DOWNFLOW INSTALLA
TION
NOTE: For downflow applications, this furnace is approved for
use on combustible flooring when any one of the following 3
accessories are used:
S Special Base, KGASB
S Cased Coil Assembly Part No. CNPV, CNRV, CAR,
or CAP
S Coil Box Part No. KCAKC
1. Determine application being installed from Table 4.
2. Construct hole in floor per Table 4 and Fig. 11.
3. Construct plenum to dimensions specified in Table 4 and
Fig. 11.
4. If downflow subbase, KGASB is used, install as shown in
Fig. 12. If Coil Assembly Part No. CNPV, CNRV, CAR,
or CAP or Coil Box Part No. KCAKC is used, install as
shown in Fig. 13.
11
PG8J/M
A89014
FURNACE
APPROVED
COIL ASSEMBLY
OR
COIL BOX
A
PLENUM
OPENING
B
OPENING
D
FLOOR
C
PG8J/M
Fig. 11 --- Floor and Plenum Opening Dimensions
NOTE: It is recommended that the perforated supply--air duct
flanges be completely folded over or removed from furnace when
installing the furnace on a factory--supplied cased coil or coil box.
To remove the supply-- air duct flange, use wide duct pliers or
hand seamers to bend flange back and forth until it breaks off. Be
careful of sharp edges. (See Fig. 14.)
FURNACE
(OR COIL CASING
WHEN USED)
COMBUSTIBLE
FLOORING
A96283
COMBUSTIBLE
FLOORING
SHEET METAL
PLENUM
FLOOR
OPENING
A08556
Fig. 13 --- Furnace, Plenum, and Coil Assembly or Coil Box
Installed on a Combustible Floor
Bottom Return Air Inlet
These furnaces are shipped with bottom closure panel installed in
bottom return--air opening. Remove and discard this panel when
bottom return air is used. To remove bottom closure panel,
perform the following:
1. Tilt or raise furnace and remove 2 screws holding bottom
filler panel. (See Fig. 9.)
2. Rotate bottom filler panel downward to release holding
tabs.
3. Remove bottom closure panel.
4. Reinstall bottom filler panel and screws.
HORIZONTAL INSTALLA
!
WARNING
TION
DOWNFLOW
SUBBASE
SHEET METAL
PLENUM
FLOOR
OPENING
A96285
Fig. 12 --- Furnace, Plenum, and Subbase Installed on a
Combustible Floor
FIRE, EXPLOSION, AND CARBON MONOXIDE
POISONING HAZARD
Failure to follow this warning could result in personal
injury, death, or property damage.
Do not install the furnace on its back or hang furnace with
control compartment facing downward. Safety control
operation will be adversely affected. Never connect
return--air ducts to the back of the furnace.
The furnace can be installed horizontally in an attic or crawl
space on either the left-- hand (LH) or right--hand (RH) side. The
furnace can be hung from floor joists, rafters or trusses or
installed on a non-- combustible platform, blocks, bricks or pad.
Suspended Furnace Support
The furnace may be supported under each end with threaded rod,
angle iron or metal plumber’s strap as shown. (See Fig. 15 and
16.) Secure angle iron to bottom of furnace as shown.
Heavy--gauge sheet metal straps (plumber’s straps) may be used
to suspend the furnace from each bottom corner. To prevent
screws from pulling out, use 2 #8 x 3/4--in. (19 mm) screws into
the side and 2 #8 x 3/4--in. (19 mm) screws in the bottom of the
furnace casing for each strap. (See Fig. 15 and 16.)
12
If the screws are attached to ONLY the furnace sides and not the
bottom, the straps must be vertical against the furnace sides and
not pull away from the furnace sides, so that the strap attachment
screws are not in tension (are loaded in shear) for reliable support.
Platform Furnace Support
Construct working platform at location where all required furnace
clearances are met. (See Fig. 2 and 17.) For furnaces with 1--in.
(25 mm) clearance requirement on side, set furnace on non-combustible blocks, bricks or angle iron. For crawl space
installations, if the furnace is not suspended from the floor joists,
the ground underneath furnace must be level and the furnace set
on blocks or bricks.
Roll-- Out Protection
Provide a minimum 17--3/4 in. x 22 in. (451 x 559 mm) piece of
sheet metal for flame roll--out protection in front of burner area
for furnaces closer than 12 inches (305 mm) above the
combustible deck or suspended furnaces closer than 12 inches
(305 mm) to joists. The sheet metal MUST extend underneath the
furnace casing by 1 in. (25 mm) with the door removed.
The bottom closure panel on furnaces of widths 17--1/2 in. (445
mm) and larger may be used for flame roll--out protection when
bottom of furnace is used for return air connection. See Fig. 17
for proper orientation of roll-- out shield.
Bottom Return Air Inlet
These furnaces are shipped with bottom closure panel installed in
bottom return--air opening. Remove and discard this panel when
bottom return air is used. To remove bottom closure panel,
perform the following:
1. Tilt or raise furnace and remove 2 screws holding bottom
filler panel. (See Fig. 9.)
2. Rotate bottom filler panel downward to release holding
tabs.
3. Remove bottom closure panel.
4. Reinstall bottom filler panel and screws.
Side Return Air Inlet
These furnaces are shipped with bottom closure panel installed in
bottom return--air opening. This panel MUST be in place when
side return air inlet(s) is used without a bottom return air inlet.
Not all horizontal furnaces are approved for side return air
connections. (See Fig. 20.)
FILTER
There are no provisions for an internal filter rack in these
furnaces.
Refer to the instructions supplied with Media Cabinet for
assembly and installation options.
A field--supplied accessory external filter rack is required.
This furnace requires KGAFR030ALL 1 in. (25 mm) external
filter rack or a suitable field--supplied substitute, such as the
media cabinet.
Refer to the instructions supplied with external filter rack for
assembly and installation options.
ARRANGEMENT
!
CARBON MONOXIDE AND POISONING HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Never operate a furnace without a filter or with filter access
door removed.
WARNING
PG8J/M
13
Table 4—Opening Dimensions -- In. (mm)
PG8J/M
FURNACE
CASING
WIDTH
14–3/16
(360)
17–1/2
(445)
21
(533)
24---1/2
(622)
APPLICATION
Upflow Applications on Combustible or Noncombustible Floor-
ing (KGASB subbase not required)
Downflow Applications on Noncombustible Flooring (KGASB
subbase not required)
Downflow applications on combustible flooring (KGASB sub-
base required)
Downflow Applications on Combustible Flooring with CNPV,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box
(KGASB subbase not required)
Upflow Applications on Combustible or Noncombustible Floor-
ing (KGASB subbase not required)
Downflow Applications on Noncombustible Flooring (KGASB
subbase not required)
Downflow applications on combustible flooring (KGASB sub-
base required)
Downflow Applications on Combustible Flooring with CNPV ,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box
(KGASB subbase not required)
Upflow Applications on Combustible or Noncombustible Floor-
ing (KGASB subbase not required)
Downflow Applications on Noncombustible Flooring (KGASB
subbase not required)
Downflow applications on combustible flooring (KGASB sub-
base required)
Downflow Applications on Combustible Flooring with CNPV ,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box
(KGASB subbase not required)
Upflow Applications on Combustible or Noncombustible Floor-
ing (KGASB subbase not required)
Downflow Applications on Noncombustible Flooring (KGASB
subbase not required)
Downflow applications on Combustible flooring (KGASB sub-
base required)
Downflow Applications on Combustible Flooring with CNPV ,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box
(KGASB subbase not required)
PLENUM OPENING FLOOR OPENING
A B C D
12---11/16
(322)
12---9/16
(319)
11---13/16
(284)
12---5/16
(319)
16
(406)
15---7/8
(403)
15---1/8
(384)
15---1/2
(394)
19---1/2
(495)
19---3/8
(492)
18---5/8
(473)
19
(483)
23
(584)
22---7/8
(581)
22---1/8
(562)
22---1/2
(572)
21---5/8
(549)
19
(483)
19
(483)
19
(483)
21---5/8
(549)
19
(483)
19
(483)
19
(483)
21---5/8
(549)
19
(483)
19
(483)
19
(483)
21---1/8
(537)
19
(483)
19
(483)
19
(483)
13---5/16
(338)
13---3/16
(335)
13---7/16
(341)
13---5/16
(338)
16---5/8
(422)
16---1/2
(419)
16---3/4
(425)
16---1/2
(419)
20---1/8
(511)
20
(508)
20---1/4
(514)
20
(508)
23---5/8
(600)
23---1/2
(597)
23---3/4
(603)
23---1/2
(597)
22---1/4
(565)
19---5/8
(498)
20---5/8
(600)
20
(508)
22---1/4
(565)
19---5/8
(498)
20---5/8
(600)
20
(508)
22---1/4
(565)
19---5/8
(498)
20---5/8
(600)
20
(508)
22---1/4
(565)
19---5/8
(498)
20---5/8
(600)
20
(508)
AIR DUCTS
General Requirements
The duct system should be designed and sized according to
accepted national standards such as those published by: Air
Conditioning Contractors Association (ACCA), Sheet Metal and
Air Conditioning Contractors National Association (SMACNA)
or American Society of Heating, Refrigerating and Air
Conditioning Engineers (ASHRAE) or consult The Air Systems
Design Guidelines reference tables available from your local
distributor. The duct system should be sized to handle the
required system design CFM at the design external static pressure.
The furnace airflow rates are provided in Table 5--AIR
DELIVERY--CFM (With Filter).
When a 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 duct(s) sealed to
the furnace casing and terminating outside the space containing
the furnace.
Secure ductwork with proper fasteners for type of ductwork used.
Seal supply-- and return--duct connections to furnace with code
approved tape or duct sealer.
NOTE: Flexible connections should be used between ductwork
and furnace to prevent transmission of vibration. Ductwork
passing through unconditioned space should be insulated and
sealed to enhance system performance. When air conditioning is
used, a vapor barrier is recommended.
Maintain a 1--in. (25 mm) clearance from combustible materials
to supply air ductwork for a distance of 36 in. (914 mm)
horizontally from the furnace. See NFPA 90B or local code for
further requirements.
Ductwork Acoustical Treatment
NOTE: Metal duct systems that do not have a 90 degree elbow
and 10 ft. (3 M) of main duct to the first branch take-- off may
require internal acoustical lining. As an alternative, fibrous
ductwork may be used if constructed and installed in accordance
with the latest edition of SMACNA construction standard on
fibrous glass ducts. Both acoustical lining and fibrous ductwork
shall comply with NFPA 90B as tested by UL Standard 181 for
Class 1 Rigid air ducts.
Supply Air Connections
For a furnace not equipped with a cooling coil, the outlet duct
shall be provided with a removable access panel. This opening
shall be accessible when the furnace is installed and shall be of
such a size that the heat exchanger can be viewed for possible
openings using light assistance or a probe can be inserted for
sampling the air stream. The cover attachment shall prevent leaks.
14
Table 5—Air Delivery -- CFM (with Filter)*
FURNACE
SIZE
045 --- 08 /
024045
045 --- 12 /
036045
070 --- 08 /
024070
070 --- 12 /
036070
070 --- 16 /
048070
090 --- 14 /
042090
090 --- 16 /
048090
090 --- 20 /
060090
110 --- 12 /
036110
110 --- 16 /
048110
110 --- 22 /
066110
* A filter is required for each return --- air inlet. Airflow performance included 3/4 ---in. (19 mm) washable filter media such as contained in factory--- a u th o r i z ed a c -
cessory filter rack. To determine airflow performance without this filter, assume an additional 0.1 in. wc available external static pressure.
--- --- Indicates unstable operating conditions.
RETURN---AIR
INLET
Bottom or
Side(s)
Bottom or
Side(s)
Bottom or
Side(s)
Bottom or
Side(s)
Bottom or
Side(s)
Bottom or
Side(s)
Bottom or
Side(s)
Bottom Only
Both Sides or 1
Side & Bottom
1Side Only
Bottom or
Side(s)
Bottom or
Side(s)
Bottom Only
Bottom Sides
or 1 Side & Bot-
tom
1Side Only
SPEED
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
1085
920
820
1440
1360
1250
1030
835
725
1425
1320
1200
1805
1630
1460
1650
1515
1385
2060
1790
1505
2405
2225
2020
2530
2285
1995
2475
2260
1950
1625
1510
1360
2035
1745
1530
2530
2230
1920
--- --2235
1920
2540
2125
--- ---
1035
875
775
1375
1300
1210
1010
815
700
1375
1280
1175
1740
1585
1420
1600
1485
1360
1985
1765
1505
2310
2155
1955
2450
2215
1945
2395
2190
1910
1575
1470
1335
1965
1710
1515
2470
2205
1900
--- ---
220
1900
2495
2120
1795
EXTERNAL STATIC PRESSURE (IN. WC)
975
830
730
1305
1240
1160
980
790
675
1320
1240
1145
1670
1530
1385
1535
1440
1320
1915
1715
1480
2220
2080
1880
2365
2150
1900
2300
2110
1855
1515
1415
1295
1880
1650
1470
2400
2165
1880
2415
2155
1880
2430
2105
1790
915
770
680
1240
1175
1100
945
760
645
1265
1205
1105
1600
1470
1325
1465
1380
1260
1820
1645
1440
2130
1995
1805
2270
2075
1840
2200
2035
1795
1445
1355
1250
1790
1560
1400
2320
2110
1845
2350
2100
1845
2355
2060
1765
845
710
620
1160
1115
1040
900
720
600
1200
1140
1050
1530
1405
1280
1385
1300
1195
1720
1560
1375
2025
1895
1730
2165
1985
1770
2090
1940
1730
1355
1285
1180
1680
1450
1310
2220
2035
1795
2250
2040
1795
2265
2010
1720
770
640
555
1070
1040
965
845
675
555
1125
1075
990
1445
1330
1220
1285
1220
1120
1610
1470
1300
1920
1785
1630
2065
1890
1685
1985
1845
1650
1260
1185
1100
1495
1340
1215
2115
1950
1730
2145
1955
1730
2175
1940
1650
675
555
470
975
950
885
775
610
475
1035
995
920
1360
1255
1155
1175
1115
1025
1490
1345
1190
1790
1675
1535
1940
1780
1600
1865
1735
1555
1165
1070
985
1365
1205
1095
2000
1855
1650
2015
1850
1650
2065
1840
1585
565
440
360
870
850
790
680
490
390
940
905
840
1280
1170
1080
1055
990
915
1340
1195
1045
1660
1565
1420
1805
1660
1480
1730
1620
1445
990
890
810
1215
1090
990
1865
1740
1555
1875
1740
1555
1935
1730
1500
390
250
190
730
725
670
490
375
300
830
790
725
1180
1080
995
895
830
710
1135
1010
890
1530
1420
1275
1670
1525
1350
1585
1475
1310
785
725
--- ---
1075
955
830
1730
1615
1460
1715
1595
1460
1785
1615
1390
195
--- ---
--- ---
560
575
520
335
265
--- ---
655
620
555
1075
990
910
645
600
565
925
820
740
1350
1260
1135
1505
1360
1180
1425
1325
1150
--- ---
--- ---
--- ---
875
750
670
1590
1485
1340
1560
1470
1340
1650
1485
1280
PG8J/M
15
Table 5 ⎯ Air Delivery -- CFM (with Filter)* (Continued)
FURNACE
SIZE
048135
066135
060155
PG8J/M
* A filter is required for each return --- air inlet. Airflow performance included 3/4 ---in. (19 mm) washable filter media such as contained in factory--- a u th o r i z ed a c -
cessory filter rack. To determine airflow performance without this filter, assume an additional 0.1 in. wc available external static pressure.
--- --- Indicates unstable operating conditions.
RETURN---AIR
INLET
Bottom or
Side(s)
Bottom Only
Bottom, Sides
or 1 Side & Bot-
tom
1SideOnly
Bottom Only
Both Sides Or 1
Side & Bottom
1Side Only
UPFLO
SPEED
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
High
M e d --- H i g h
M e d --- L o w
W OWNFLOW
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
2090
1790
1545
2485
2195
1880
--- ---
“2180
1880
--- --2135
1880
2465
2115
1800
--- --2155
1800
--- --2140
1800
2010
1755
1525
2400
2150
1850
--- --2145
1850
--- --2085
1850
2430
2105
1790
--- --2135
1790
--- --2095
1790
D
EXTERNAL STATIC PRESSURE (IN. WC)
1930
1705
1500
2310
2090
1820
2385
2060
1820
2245
2035
1820
2375
2075
1770
2375
2095
1770
2260
2040
1770
1835
1640
1450
2215
2000
1780
2305
2010
1780
2155
1975
1780
2305
2030
1735
2285
2040
1735
2180
1975
1735
1710
1550
1380
2110
1920
1715
2195
1945
1715
2055
1895
1715
2230
1980
1695
2200
1975
1695
2085
1890
1695
1590
1465
1315
2000
1825
1635
2085
1865
1635
1940
1795
1635
2110
1910
1640
2105
1895
1640
1975
1810
1640
HORIZONTAL
1470
1360
1215
1880
1720
1540
1960
1765
1540
1825
1685
1540
2000
1830
1570
1995
1790
1570
1865
1705
1570
1335
1210
1005
1725
1565
1415
1825
1660
1415
1695
1565
1415
1865
1725
1465
1870
1685
1465
1740
1595
1465
1025
945
855
1535
1405
1290
1670
1515
1290
1555
1445
1290
1725
1590
1345
1730
1550
1345
1605
1480
1345
835
785
670
1355
1255
1160
1465
1325
1160
1385
1265
1160
1545
1425
1225
1570
1400
1225
1455
1325
1225
90˚
120˚
MIN
YES
YES
NOT
RECOMMENDED
120˚
MIN
Fig. 14 --- Duct Flanges
YES
YES
NOT
RECOMMENDED
90˚
120˚
MIN
YES
YES
NOT
RECOMMENDED
A02329
16
Loading...