INSTALLATION INSTRUCTIONS G60DFV(X) Series

INSTALLATION
INSTRUCTIONS
E 2008 Lennox Industries Inc.
Dallas, Texas, USA
G60DFV(X) Series
GAS FURNACE
506179−01
10/2008
Supersedes 505,126M
Litho U.S.A.
Table of Contents
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
G60DFV(X) Parts Arrangement . . . . . . . . . . . . . . . . . . . 3
G60DFV(X) Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . 4
Shipping and Packing List . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Combustion, Dilution & Ventilation Air . . . . . . . . . . . . . . 6
Downflow Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Setting Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Duct System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Integrated Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Unit Start−Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Gas Pressure Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 32
High Altitude Information . . . . . . . . . . . . . . . . . . . . . . . . . 32
Other Unit Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Heating Sequence of Operation . . . . . . . . . . . . . . . . . . . 33
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Planned Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Repair Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Integrated Control Diagnostic Codes . . . . . . . . . . . . . . . 37
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Start−Up & Performance Check List . . . . . . . . . . . . . . . . 44
WARNING
FIRE OR EXPLOSION HAZARD.
Failure to follow safety warnings exactly could result in serious injury, death,
or property damage.
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
WHAT TO DO IF YOU SMELL GAS:
D Do not try to light any appliance.
D Do not touch any electrical switch; do not
use any phone in your building.
D Leave the building immediately.
D Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
D If you cannot reach your gas supplier, call
the fire department.
10/08
*2P1008*
506179−01
Page 1
*P506179-01*
G60DFV(X) Unit Dimensions − inches (mm)
3−3/4 (95)
5/8 (16)
D
RETURN AIR
OPENING
B
FLUE OUTLET
(Top)
5/8
(16)
19−1/2
(495)
5/8 (16)
TOP VIEW
28−1/2
(724)
A
5/8
(16)
B
5/8
(16)
19−1/2
(495)
AIR FLOW
40
(1016)
ELECTRICAL INLET
(Either Side)
4−7/8 (124) Right
2−1/4 (57) Left
GAS PIPING INLET
(Either Side)
9−1/4
(235)
3/4
(19)
C
Supply
Air
19−1/4 Supply
(489)
Air
3/4
(19)
FRONT VIEW
Model No
No.
G60DFV(X)−36A−070
G60DFV(X)−36B−090
G60DFV(X)−60C−090,
G50DFV(X)−60C−110
G60DFV(X)−60D−135
3/4
(19)
SIDE VIEW
A
B
C
D
in.
14−1/2
17−1/2
mm
368
446
in.
13−1/4
16−1/4
mm
337
413
in.
13
16
mm
330
406
in.
4−1/2
6
mm
114
152
21
533
19−1/4
502
19−1/2
495
7−3/4
197
24−1/2
622
23−1/4
591
23
584
9−1/2
241
Page 2
G60DFV(X) Parts Arrangement
Variable
Speed
Blower Motor
Blower Assembly
Internal Flue Pipe
Assembly
Gasket
Circuit
Breaker
Power Choke
(1HP Only)
Flue
Chase
Gasket
Door
Interlock Switch
Transformer
Limit
Shield
Two−Stage
Integrated Control
Flue Box Gasket
Primary
Limit
Flue Collector Box
Heat Exchanger
Flame Rollout Switches
Flame Sensor
Gasket
Air Intake
Cover
Burner Box Top
Air Baffle
Combustion
Air Orifice
Combustion Air Pressure Switch Assembly
(Two switches)
Combustion Air Inducer
Gas
Valve
Gasket
Gas
Orifices
Burners
Ignitor
Bracket
Ignitor
Sight Glass
Burner Box Bottom
Burner Box Cover
FIGURE 1
Page 3
G60DFV(X) Gas Furnace
The G60DFV(X) gas furnace is equipped with a two−stage,
variable speed integrated control. This control ensures
compatibility with Lennox’ Harmony III zone control system, as well as a thermostat which provides humidity control. Each G60DFV(X) unit is shipped ready for installation
in the downflow position.
In the USA, installation of gas furnaces must conform with
local building codes. In the absence of local codes, units
must be installed according to the current National Fuel
Gas Code (ANSI-Z223.1). The National Fuel Gas Code is
available from the following address:
American National Standards Institute, Inc.
11 West 42nd Street
New York, NY 10036
In Canada, installation must conform with current National
Standard of Canada CSA-B149 installation codes for natural gas burning appliances and equipment, local plumbing
or waste water codes and other applicable local codes.
Shipping and Packing List
Package 1 of 1 contains
1 − Assembled G60DFV(X) unit
1 − Bag assembly containing the following:
2 − Screws
3 − Wire nuts
1 − Snap bushing
1 − Snap plug
1 − Wire tie
1 − Vent warning label
1 − Owner’s manual and warranty card
Adequate clearance must be made around the air openings into the vestibule area. In order to ensure proper unit
operation, combustion and ventilation air supply must be
provided according to the current National Fuel Gas Code
or CSA-B149 standards.
Vent installations must be consistent with the venting
tables (in this instruction) and applicable provisions of local
building codes.
This furnace is CSA International certified for installation
clearances to combustible material as listed on the unit
nameplate and in the tables in figure 9. Accessibility and
service clearances must take precedence over fire protection clearances.
The following items may be ordered separately:
1 − Thermostat
1 − Propane/LP changeover kit
1 − Additive base
1 − High altitude kit
Check equipment for shipping damage. If you find any
damage, immediately contact the last carrier.
Safety Information
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal injury or loss of life. Installation and service must
be performed by a licensed professional installer (or
equivalent), service agency or the gas supplier.
CAUTION
As with any mechanical equipment, personal injury
can result from contact with sharp sheet metal
edges. Be careful when you handle this equipment.
G60DFV(X) units are CSA International certified to ANSI
Z21.47 and CSA 2.3 standard.
For installation in a residential garage, the furnace must be
installed so that the burner(s) and the ignition source are
located no less than 18 inches (457 mm) above the floor.
The furnace must be located or protected to avoid physical
damage by vehicles. When a furnace is installed in a public
garage, hangar, or other building that has a hazardous atmosphere, the furnace must be installed according to recommended good practice requirements and current National Fuel Gas Code or CSA B149 standards.
NOTE − Furnace must be adjusted to obtain a temperature
rise(high and low fire) within the range(s) specified on the
unit nameplate. Failure to do so may cause erratic limit operation and may also result in premature heat exchanger
failure.
This G60DFV(X) furnace must be installed so that its electrical components are protected from water.
When this furnace is used with cooling units, it shall be
installed in parallel with, or on the upstream side of, cooling
units to avoid condensation in the heating compartment.
With a parallel flow arrangement, a damper (or other
means to control the flow of air) must adequately prevent
chilled air from entering the furnace. If the damper is manually operated, it must be equipped to prevent operation of
either the heating or the cooling unit, unless it is in the full
HEAT or COOL setting.
When installed, this furnace must be electrically grounded
according to local codes. In addition, in the United States,
Page 4
installation must conform with the current National Electric
Code, ANSI/NFPA No. 70. The National Electric Code
(ANSI/NFPA No. 70) is available from the following address:
National Fire Protection Association
1 Battery March Park
Quincy, MA 02269
In Canada, all electrical wiring and grounding for the unit
must be installed according to the current regulations of the
Canadian Electrical Code Part I (CSA Standard C22.1)
and/or local codes.
NOTE − This furnace is designed for a minimum continuous
return air temperature of 60°F (16°C) or an intermittent operation down to 55°F (13°C) dry bulb for cases where a
night setback thermostat is used. Return air temperature
must not exceed 85°F (29°C) dry bulb.
The G60DFV(X) furnace may be installed in alcoves, closets, attics, basements, garages, and utility rooms in the
downflow position.
This furnace design has not been CSA International certified for installation in mobile homes, recreational vehicles,
or outdoors.
Lennox does not recommend the use of G60DFV(X) units
as a construction heater during any phase of construction.
Very low return air temperatures, harmful vapors and operation of the unit with clogged or misplaced filters will damage the unit.
G60DFV(X) units may be used for heating of buildings or
structures under construction, if the following conditions
are met:
D The vent system must be permanently installed per
these installation instructions.
D A room thermostat must control the furnace. The use of
fixed jumpers that will provide continuous heating is not
allowed.
D The return air duct must be provided and sealed to the
furnace.
D Return air temperature range between 60°F (16°C) and
80°F (27°C) must be maintained.
D Air filters must be installed in the system and must be
maintained during construction.
D Air filters must be replaced upon construction completion.
D The input rate and temperature rise must be set per the
furnace rating plate.
D
One hundred percent (100%) outdoor air must be provided for combustion air requirements during construction. Temporary ducting may supply outdoor air to the
furnace. Do not connect duct directly to the furnace.
Size the temporary duct following these instructions in
section for Combustion, Dilution and Ventilation Air in a
confined space with air from outside.
D
The furnace heat exchanger, components, duct system, air filters and evaporator coils must be thoroughly
cleaned following final construction clean−up.
D
All furnace operating conditions (including ignition, input rate, temperature rise and venting) must be verified
according to these installation instructions.
NOTE − The Commonwealth of Massachusetts stipulates these additional requirements:
D
Gas furnaces shall be installed by a licensed plumber or gas fitter only.
D
The gas cock must be T handle" type.
D
When a furnace is installed in an attic, the passageway to and service area surrounding the equipment
shall be floored.
General
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
having jurisdiction before installation.
In addition to the requirements outlined previously, the following general recommendations must be considered
when installing a G60DFV(X) furnace:
Page 5
D
Place the furnace as close to the center of the air distribution system as possible. The furnace should also be
located close to the chimney or vent termination point.
D
Do not install the furnace where drafts might blow directly into it. This could cause improper combustion and unsafe operation.
D
Do not block the furnace combustion air openings with
clothing, boxes, doors, etc. Air is needed for proper
combustion and safe unit operation.
D
When the furnace is installed in an attic or other insulated space, keep insulation away from the furnace.
WARNING
CAUTION
Product contains fiberglass wool.
Disturbing the insulation in this product during
installation, maintenance, or repair will expose you
to fiberglass wool. Breathing this may cause lung
cancer. (Fiberglass wool is known to the State of California to cause cancer.)
Fiberglass wool may also cause respiratory, skin,
and eye irritation.
To reduce exposure to this substance or for further
information, consult material safety data sheets
available from address shown below, or contact your
supervisor.
Lennox Industries Inc.
P.O. Box 799900
Dallas, TX 75379−9900
Insufficient combustion air can cause headaches,
nausea, dizziness or asphyxiation. It will also cause
excess water in the heat exchanger resulting in rusting and premature heat exchanger failure. Excessive
exposure to contaminated combustion air will result
in safety and performance related problems. Avoid
exposure to the following substances in the combustion air supply:
Permanent wave solutions
Chlorinated waxes and cleaners
Chlorine base swimming pool chemicals
Water softening chemicals
De-icing salts or chemicals
Carbon tetrachloride
Halogen type refrigerants
Cleaning solvents (such as perchloroethylene)
Printing inks, paint removers, varnishes, etc.
Hydrochloric acid
Cements and glues
Antistatic fabric softeners for clothes dryers
Masonry acid washing materials
Combustion, Dilution & Ventilation Air
In the past, there was no problem in bringing in sufficient
outdoor air for combustion. Infiltration provided all the air
that was needed. In today’s homes, tight construction practices make it necessary to bring in air from outside for combustion. Take into account that exhaust fans, appliance
vents, chimneys, and fireplaces force additional air that
could be used for combustion out of the house. Unless outside air is brought into the house for combustion, negative
pressure (outside pressure is greater than inside pressure)
will build to the point that a downdraft can occur in the furnace vent pipe or chimney. As a result, combustion gases
enter the living space creating a potentially dangerous situation.
In the absence of local codes concerning air for combustion and ventilation, use the guidelines and procedures in
this section to install G60DFV(X) furnaces to ensure efficient and safe operation. You must consider combustion
air needs and requirements for exhaust vents. A portion of
this information has been reprinted with permission from
the National Fuel Gas Code (ANSI-Z223.1). This reprinted
material is not the complete and official position of the ANSI
on the referenced subject, which is represented only by the
standard in its entirety.
In Canada, refer to the standard CSA B149 installation
codes.
CAUTION
Do not install the furnace in a corrosive or contaminated atmosphere. Meet all combustion and ventilation air requirements, as well as all local codes.
All gas-fired appliances require air for the combustion process. If sufficient combustion air is not available, the furnace or other appliances will operate inefficiently and unsafely. Enough air must be provided to meet the needs of
all fuel-burning appliances and appliances such as exhaust fans which force air out of the house. When fireplaces, exhaust fans, or clothes dryers are used at the
same time as the furnace, much more air is necessary to
ensure proper combustion and to prevent a downdraft. Insufficient air causes incomplete combustion which can result in carbon monoxide.
In addition to providing combustion air, fresh outdoor air dilutes contaminants in the indoor air. These contaminants
may include bleaches, adhesives, detergents, solvents
and other contaminants which can corrode furnace components.
The requirements for providing air for combustion and ventilation depend largely on whether the furnace is installed in
an unconfined or a confined space.
Unconfined Space
An unconfined space is an area such as a basement or
large equipment room with a volume greater than 50 cubic
feet (1.42 m3) per 1,000 Btu (.29 kW) per hour of the combined input rating of all appliances installed in that space.
This space also includes adjacent rooms which are not
separated by a door. Though an area may appear to be unconfined, it might be necessary to bring in outdoor air for
combustion if the structure does not provide enough air by
Page 6
infiltration. If the furnace is located in a building of tight
construction with weather stripping and caulking around
the windows and doors, follow the procedures in the air
from outside section.
Confined Space
A confined space is an area with a volume less than 50 cubic feet (1.42 m3) per 1,000 Btu (.29 kW) per hour of the
combined input rating of all appliances installed in that
space. This definition includes furnace closets or small
equipment rooms.
When the furnace is installed so that supply ducts carry air
circulated by the furnace to areas outside the space containing the furnace, the return air must be handled by ducts
which are sealed to the furnace casing and which terminate
outside the space containing the furnace. This is especially
important when the furnace is mounted on a platform in a
confined space such as a closet or small equipment room.
Even a small leak around the base of the unit at the platform
or at the return air duct connection can cause a potentially
dangerous negative pressure condition. Air for combustion
and ventilation can be brought into the confined space either from inside the building or from outside.
CHIMNEY
OR GAS
VENT
EQUIPMENT IN CONFINED
SPACE ALL AIR FROM INSIDE
WATER
HEATER
FURNACE
OPENINGS
(To Adjacent
Room)
NOTE − Each opening shall have a free area of at least one square
inch (645 mm 2) per 1,000 Btu (.29 kW) per hour of the total input rating of all equipment in the enclosure, but not less than 100 square
inches (64516 mm 2).
FIGURE 2
Air from Inside
If the confined space that houses the furnace adjoins a
space categorized as unconfined, air can be brought in by
providing two permanent openings between the two
spaces. Each opening must have a minimum free area of 1
square inch (645 mm2) per 1,000 Btu (.29 kW) per hour of
total input rating of all gas−fired equipment in the confined
space. Each opening must be at least 100 square inches
(64516 mm2). One opening shall be within 12 inches (305
mm) of the top of the enclosure and one opening within 12
inches (305 mm) of the bottom. See figure 2.
Air from Outside
If air from outside is brought in for combustion and ventilation, the confined space must have two permanent openings. One opening shall be within 12 inches (305 mm) of the
top of the enclosure and one opening within 12 inches (305
mm) of the bottom. These openings must communicate directly or by ducts with the outdoors or spaces (crawl or attic) that freely communicate with the outdoors or indirectly
through vertical ducts. Each opening shall have a minimum
free area of 1 square inch (645 mm2) per 4,000 Btu (1.17
kW) per hour of total input rating of all equipment in the enclosure. See figures 3 and 4. When communicating with
the outdoors through horizontal ducts, each opening shall
have a minimum free area of 1 square inch (645 mm2) per
2,000 Btu (.56 kW) per total input rating of all equipment in
the enclosure. See figure 5.
When ducts are used, they shall be of the same cross−sectional area as the free area of the openings to which they
connect. The minimum dimension of rectangular air ducts
shall be no less than 3 inches (75 mm). In calculating free
area, the blocking effect of louvers, grilles, or screens must
be considered. If the design and free area of protective covering is not known for calculating the size opening required,
it may be assumed that wood louvers will have 20 to 25 percent free area and metal louvers and grilles will have 60 to
75 percent free area. Louvers and grilles must be fixed in
the open position or interlocked with the equipment so that
they are opened automatically during equipment operation.
Page 7
EQUIPMENT IN CONFINED SPACE
ALL AIR FROM OUTSIDE
(Inlet Air from Crawlspace and Outlet Air to Ventilated Attic)
CHIMNEY OR
GAS VENT
VENTILATION LOUVERS
(Each end of attic)
OUTLET
AIR
FURNACE
WATER
HEATER
INLET
AIR
VENTILATION
LOUVERS
(For unheated crawl space)
NOTE−The inlet and outlet air openings shall each have a free area of at least one square inch (645
mm2) per 4,000 Btu (1.17 kW) per hour of the total input rating of all equipment in the enclosure.
FIGURE 3
CHIMNEY
OR GAS
VENT
EQUIPMENT IN CONFINED SPACE
ALL AIR FROM OUTSIDE
(All Air Through Ventilated Attic)
CHIMNEY
OR GAS
VENT
VENTILATION LOUVERS
(Each end of attic)
EQUIPMENT IN
CONFINED SPACE
ALL AIR FROM
OUTSIDE
WATER
HEATER
OUTLET AIR
OUTLET
AIR
FURNACE
FURNACE
INLET AIR
(Ends 12 in.
above bottom)
INLET AIR
WATER
HEATER
NOTE − Each air duct opening shall have a free area of at least
one square inch (645 mm 2) per 2,000 Btu (.59 kW) per hour of
the total input rating of all equipment in the enclosure. If the
equipment room is located against an outside wall and the air
openings communicate directly with the outdoors, each opening shall have a free area of at least one square inch (645 mm2)
per 4,000 Btu (1.17 kW) per hour of the total input rating of all
other equipment in the enclosure.
NOTE−The inlet and outlet air openings shall each have a
free area of at least one square inch (645 mm 2) per 4,000
Btu (1.17 kW) per hour of the total input rating of all equipment in the enclosure.
FIGURE 4
FIGURE 5
Page 8
2 − After opening is cut, set additive base into opening.
Downflow Installation
Downflow unit installs in three ways: on non−combustible
flooring, on combustible flooring using an additive base, or
on a reverse−flow cooling cabinet. Do not drag the unit
across the floor.
Installation on Non−Combustible Flooring
1 − Cut floor opening keeping in mind clearances listed on
unit rating plate. Also keep in mind gas supply connections, electrical supply, flue and air intake connections
and sufficient installation and servicing clearances.
See table 1 for correct floor opening size.
2 − Flange warm air plenum and lower the plenum into the
opening.
3 − Set the unit over the plenum and seal the plenum to
the unit.
3 − Ensure that the seal is adequate.
3 − Check fiberglass strips on additive base to make sure
they are properly glued and positioned.
4 − Lower supply air plenum into additive base until plenum flanges seal against fiberglass strips.
NOTE − Be careful not to damage fiberglass strips.
Check for a tight seal.
5 − Set the furnace over the plenum.
6 − Ensure that the seal between the furnace and plenum
is adequate.
G60DFV(X)UNIT
SUPPLY AIR PLENUM
TABLE 1
NON−COMBUSTIBLE FLOOR OPENING SIZE
Front to Rear
M d l No.
Model
N
PROPERLY
SIZED FLOOR
OPENING
Side to Side
in.
mm
in.
mm
A Cabinet (14.5")
19 − 3/4
502
13 − 1/4
337
B Cabinet (17.5")
19 − 3/4
502
16 − 1/4
413
C Cabinet (21")
19 − 3/4
502
19 − 3/4
502
D Cabinet (24.5")
19 − 3/4
502
23 − 1/4
591
FIGURE 6
NOTE − Floor opening dimensions listed are 1/4 inch (6 mm) larger than
the unit opening. See unit dimensions on page 2.
Installation on Combustible Flooring
1 − When unit is installed on a combustible floor, an additive base must be installed between the furnace and
the floor. The base must be ordered separately for the
following cabinet sizes:
A cabinet 14.5" − # 11M59
D B cabinet 17.5" − # 11M60
D C cabinet −21" # 11M60
D D cabinet 24.5" − # 11M61
See table 2 for opening size to cut in floor.
D
ADDITIVE BASE
Installation on Cooling Cabinet
1 − Refer to reverse−flow coil installation instructions for
correctly sized opening in floor and installation of cabinet.
2 − When cooling cabinet is in place, set and secure the
furnace according to the instructions that are provided
with the cooling coil. Secure the furnace to the cabinet.
3 − Seal the cabinet and check for air leaks.
Return Air Opening −− Downflow Units
The following steps should be taken when installing plenum:
1 − Bottom edge of plenum should be flanged with a
hemmed edge (See figure 7).
CAUTION
The furnace and additive base shall not be installed
directly on carpeting, tile, or other combustible material other than wood flooring.
PLENUM
SECURE FROM
OUTSIDE CABINET
Side View
HEMMED EDGE
TABLE 2
ADDITIVE BASE FLOOR OPENING SIZE
Front to Rear
M d lN
Model
No.
FIBERGLASS
SEALING STRIP
(Field Provided)
Side to Side
in.
mm
in.
mm
A Cabinet (14.5")
22
559
15 − 3/4
400
B Cabinet (17.5")
22
559
18 − 3/4
476
C Cabinet (21")
22
559
22 − 3/4
578
CABINET SIDE PANEL
FIGURE 7
2 − Fiberglass sealing strips should be used.
22
559
25 − 3/4
654
NOTE − Floor opening dimensions listed are 1/4 inch (6 mm) larger than
unit opening. See unit dimensions on page 2.
D Cabinet (24.5")
3 − In all cases, plenum should be secured to top flanges
of furnace with sheet metal screws.
Page 9
Downflow Application
Allow for clearances to combustible materials as indicated on the unit nameplate. Minimum clearances for
closet or alcove installations are shown in figure 9.
PLENUM
Side View
SECURE FROM INSIDE CABINET
HEMMED EDGE
FIBERGLASS
SEALING STRIP
(Field Provided)
Downflow Application Installation Clearances
CABINET SIDE
PANEL
Top
FIGURE 8
4 − In closet installations, it may be impossible to install
sheet metal screws from the outside. In this case,
make plenum with a removable front and install
screws from the inside (See figure 8).
Left Side
Right Side
5 − Make certain that an adequate seal is made.
Setting Equipment
Bottom
WARNING
Do not install the furnace on its front or its back. Do
not connect the return air ducts to the back of the furnace. Doing so will adversely affect the operation of
the safety control devices, which could result in personal injury or death.
Install the G60DFV(X) gas furnace as shipped. Do not
install the furnace horizontally.
Select a location that allows for the required clearances
that are listed on the unit nameplate. Also consider gas
supply connections, electrical supply, vent connection, and
installation and service clearances [24 inches (610 mm) at
unit front]. The unit must be level.
NOTE − Units with 1/2 hp blower motors are equipped with
three flexible legs and one rigid leg. The rigid leg is
equipped with a shipping bolt and a flat white plastic washer (rather than the rubber mounting grommet used with a
flexible mounting leg). The bolt and washer must be removed before the furnace is placed into operation. After the bolt and washer have been removed, the rigid leg
will not touch the blower housing.
NOTE − G60DFV−60D−135 units are equipped with a shipping pad under the blower housing. Remove the shipping
pad prior to operation.
WARNING
The blower access panel must be securely in place
when the blower and burners are operating. Gas
fumes, which could contain carbon monoxide, can
be drawn into living space resulting in personal injury or death.
Type of Vent
Connector
Type C
Type B1
Top
1 in. (25 mm)
1 in. (25 mm)
*Front
3 in. (76 mm)
3 in. (76 mm)
Back
0
0
Sides
0†
0
Vent
6 in. (152 mm)
1 in. (25 mm)
Floor
NC††
NC††
*Front clearance in alcove installation must be 24 in. (610 mm).
Maintain a minimum of 24 in. (610 mm) for front service access.
†Left side requires 3 in. if a single wall vent is used on 14 −1/2 in.
cabinets, or 2 in. if a single wall vent is used on 17 − 1/2 in. cabinets.
††The furnace may be installed on a combustible wood floor if an
optional additive base is installed between the furnace and the
combustible floor.
FIGURE 9
WARNING
Improper installation of the furnace can result in personal injury or death. Combustion and flue products
must never be allowed to enter the return air system
or the living space. Use screws and joint tape to seal
the return air system to the furnace.
In platform installations with bottom return air, the
furnace should be sealed airtight to the return air plenum. A door must never be used as a portion of the
return air duct system. The base must provide a
stable support and an airtight seal to the furnace. Allow absolutely no sagging, cracks, gaps, etc.
The return and supply air duct systems must never
be connected to or from other heating devices such
as a fireplace or stove, etc. Fire, explosion, carbon
monoxide poisoning, personal injury and/or property damage could result.
Page 10
Filters
This unit is not equipped with a filter or rack. A field−provided high−velocity filter is required for the unit to operate
properly. Table 3 lists recommended filter sizes.
A filter must be in place any time the unit is operating.
TABLE 3
Furnace
Cabinet Width
Return Air Filter Size (inches)
14−1/2"
17−1/2"
14 X 25 X 1 (1)
16 X 25 X 1 (1)
21"
20 X 25 X 1 (1)
24−1/2"
24 X 25 X 1 (1)
NOTE − Use these instructions as a guide. They do not supersede local codes. This furnace must be vented according to all local codes, these installation instructions, and the
provided venting tables in these instructions
The venting tables in this manual were extracted from the
National Fuel Gas Code (NFPA 54 / ANSI Z223.1) and are
provided as a guide for proper vent installation. Proper application, termination, construction and location of vents
must conform to local codes having jurisdiction. In the absence of local codes, the NFGC serves as the defining document.
Refer to the tables and the venting information contained in
these instructions to properly size and install the venting
system.
IMPORTANT
Duct System
Use industry-approved standards (such as those published by Air Conditioning Contractors of America or American Society of Heating, Refrigerating and Air Conditioning
Engineers) to size and install the supply and return air duct
system. This will result in a quiet and low-static system that
has uniform air distribution.
NOTE − Do not operate the furnace with an external static
pressure that exceeds 0.8 inches w.c. Higher external static pressures may cause erratic limit operation.
Ensure that you have made a seal between the supply air
plenum and the furnace and between the furnace and the
return air plenum.
Once the venting system is installed, attach the Disconnected Vent" warning sticker to a visible area of
the plenum near the vent pipe. The warning sticker
is provided in the bag assembly.
WARNING
Asphyxiation hazard. The exhaust vent for this furnace must be securely connected to the furnace flue
transition at all times.
VENT CONNECTION
Return Air Plenum
VENT
PIPE
Return air must not be drawn from a room where this
furnace, or any other gas appliance (ie., a water heater), is installed. When return air is drawn from a room, a
negative pressure is created in the room. If a gas appliance
is operating in a room with negative pressure, the flue products can be pulled back down the vent pipe and into the
room. This reverse flow of the flue gas may result in incomplete combustion and the formation of carbon monoxide
gas. This toxic gas might then be distributed throughout the
house by the furnace duct system.
Venting
A 4−inch diameter flue transition is factory-installed on all
models. Modifying or removing the flue transition will
cause the unit to operate unsafely and will void the unit
certification. The vent connector does not require insulation.
The G60DFV(X) series units are classified as fan−assisted
Category I furnaces when vertically vented according to
the latest edition of National Fuel Gas Code (NFPA 54 /
ANSI Z223.1) in the USA and the current standards of CSA
B149 Natural Gas and Propane Installation Code in Canada. A fan−assisted Category I furnace is an appliance
equipped with an integral mechanical means to either draw
or force combustion products through the combustion
chamber and/or heat exchanger.
FURNACE
FLUE
TRANSITION
COLLAR
FIGURE 10
Use self−drilling sheet metal screws or a mechanical fastener to firmly secure the vent pipe to the round collar of the
flue transition. If self−drilling screws are used to attach the
vent pipe, it is recommended that three be used. Drive one
self−drilling screw through the front and one through each
side of the vent pipe and collar. See figure 10.
Install the first vent connector elbow at a minimum of six
inches (152 mm) from the furnace vent outlet.
Venting Using a Masonry Chimney
The following additional requirements apply when a lined
masonry chimney is used to vent this furnace.
Masonry chimneys used to vent Category I central furnaces must be either tile-lined or lined with a listed metal
lining system or dedicated gas vent. Unlined masonry
chimneys are prohibited. See figures 11 and 12 for common venting.
Page 11
Common Venting Using Tile−Lined Interior Masonry Chimney and Combined Vent Connector
MINIMUM LENGTH = AS SHORT AS PRACTICAL.
FOR MAXIMUM LENGTH SEE NOTE TO LEFT
NOTE− Refer to provided venting tables
for installations in the USA and the
venting tables in current CSA−B149 for
installations in Canada.
INTERIOR TILE−LINED
MASONRY CHIMNEY
NOTE − the chimney must be properly
sized per provided venting tables or
lined with listed metal lining system.
VENT
CONNECTOR
SEE NOTE 1 BELOW
FURNACE
OTHER
APPLIANCE
PERMANENTLY
SEALED FIREPLACE
OPENING
NOTE − Either single-walled or double-walled vent connector may be used. Refer to the capacity requirements as shown in the provided venting tables for installations in USA and the venting tables in current CSA−B149 for installations in Canada.
FIGURE 11
A chimney with one or more sides exposed to the outside of
DO NOT insulate the space between the liner and the
the structure is considered to be an exterior chimney.
chimney wall with puffed mica or any other loose granAn exterior masonry chimney that is not tile−lined must be
lined with B1 vent or a listed insulated flexible metal vent.
An exterior tile−lined chimney that is sealed and capped
may be lined with a listed uninsulated flexible metal vent.
If the existing chimney will not accommodate a listed metal
liner, either the chimney must be rebuilt to accommodate
one of these liners or an alternate approved venting method must be found.
Insulation for the flexible vent pipe must be an encapsulated fiberglass sleeve recommended by the flexible vent
pipe manufacturer. See figure 12.
Common Venting Using Metal−Lined Masonry Chimney
SEALED
5 ft. (1.5 m)
minimum
MAX. LENGTH
−− SEE NOTE 1
BELOW.
MIN. LENGTH −− AS
SHORT AS PRACTICAL
EXTERIOR
CHIMNEY WITH
METAL
LINER
VENT CONNECTOR
SEE NOTE 2
4 in. (102 mm)
minimum
FURNACE
OTHER
APPLIANCE
PERMANENTLY
SEALED FIREPLACE
OPENING
NOTE 1 − Refer to the provided venting tables for installations in the USA
and the venting tables in CSA−B149 for installations Canada.
NOTE 2 − Either single-walled or double-walled vent connector may be
used. Refer to the capacity requirements shown in the provided venting
tables for installations in USA and the venting tables in current CSA−
B149 for installations in Canada.
FIGURE 12
ular insulating material
IMPORTANT
SINGLE appliance venting of a fan-assisted furnace
into a tile-lined masonry chimney (interior or outside
wall) is PROHIBITED. The chimney must first be lined
with either type B1 vent or an insulated single wall
flexible vent lining system which has been sized according to the provided venting tables and the vent
pipe manufacturer’s instructions.
A fan−assisted furnace may be commonly vented into an
existing lined masonry chimney if the following conditions
are met:
S The chimney is currently serving at least one drafthood
equipped appliance
S The vent connectors and chimney are sized according
to the provided venting tables for the USA, and the appropriate venting tables in the standards of the CSA
B149 Natural Gas and Propane Installation Codes in
Canada.
If type B1 double-wall vent is used inside a chimney, no other appliance can be vented into the chimney. The outer wall
of type B1 vent pipe must not be exposed to flue products.
A type B1 vent or masonry chimney liner shall terminate
above the roof surface with a listed cap or a listed roof assembly according to the terms of their respective listings
and the vent manufacturer’s instructions.
When inspection reveals that an existing chimney is not
safe for the intended purpose, it shall be rebuilt to conform
to nationally recognized standards, lined or relined with
suitable materials, or replaced with a gas vent or chimney
suitable for venting G60DFV(X) series units. The chimney
passageway must be checked periodically to ensure that it
is clear and free of obstructions.
Do not install a manual damper, barometric draft regulator,
or flue restrictor between the furnace and the chimney.
Page 12
Never connect a Category I appliance to a chimney that is
servicing a solid−fuel appliance. If a fireplace chimney flue
is used to vent this appliance, the fireplace opening must
be permanently sealed.
A type B or listed chimney lining system that passes
through an unused masonry chimney flue is not considered
to be exposed to the outdoors.
General Venting Requirements
Vent all G60DFV(X) furnaces according to these instructions:
1 − Vent diameter recommendations and maximum allowable piping runs are found in the provided venting
tables for the USA, and the appropriate venting tables
in the standards of the CSA B149 Natural Gas and Propane Installation Codes for Canada.
2 − In no case should the vent or vent connector diameter
be less than the diameter specified in the provided
venting tables for the USA, and the appropriate venting
tables in the standards of the CSA B149 Natural Gas
and Propane Installation Codes for Canada.
3 − The minimum vent capacity determined by the sizing
tables must be less than the low fire input rating and the
maximum vent capacity must be greater than the high
fire input rating.
4 − Single appliance vents − If the vertical vent or tile-lined
chimney has a larger diameter or flow area than the
vent connector, use the vertical vent diameter to determine the minimum vent capacity and the vent
connector diameter to determine the maximum vent
capacity. The flow area of the vertical vent, however,
shall not exceed 7 times the flow area of the listed appliance categorized vent area, drafthood outlet area or
flue collar area unless designed according to approved
engineering methods.
5 − Multiple appliance vents − The flow area of the largest
section of vertical vent or chimney shall not exceed 7
times the smallest listed appliance categorized vent
area, drafthood outlet area or flue collar area unless
designed according to approved engineering methods.
6 − The entire length of single wall metal vent connector
shall be readily accessible for inspection, cleaning,
and replacement.
7 − Single appliance venting configurations with zero lateral lengths (tables 5 and 6) are assumed to have no
elbows in the vent system. For all other vent configurations, the vent system is assumed to have two 90° elbows. For each additional 90° elbow or equivalent (for
example two 45° elbows equal one 90° elbow) beyond
two, the maximum capacity listed in the venting table
should be reduced by 10% (0.90 x maximum listed capacity).
8 − The common venting tables (7, 8, 9, and 10) were generated using a maximum horizontal vent connector
length of 1−1/2 feet (.46 m) for each inch (25 mm) of
connector diameter as follows:
TABLE 4
Connector Diameter
inches (mm)
Maximum Horizontal
Connector Length feet (m)
3 (76)
4−1/2 (1.37)
4 (102)
6 (1.83)
5 (127)
7−1/2 (2.29)
6 (152)
9 (2.74)
7 (178)
10−1/2 (3.20)
9 − If the common vertical vent is offset, the maximum
common vent capacity listed in the common venting
tables should be reduced by 20%, the equivalent of two
90° elbows (0.80 x maximum common vent capacity).
The horizontal length of the offset shall not exceed
1-1/2 feet (.46 m) for each inch (25 mm) of common
vent diameter.
10 − The vent pipe should be as short as possible with the
least number of elbows and angles required to complete the job. Route the vent connector to the vent using the shortest possible route.
11 − A vent connector shall be supported without any dips
or sags and shall slope a minimum of 1/4 inch (6.4 mm)
per linear foot (305 mm) of connector, back toward the
appliance.
12 − Vent connectors shall be firmly attached to the furnace
flue collar by self−drilling screws or other approved
means, except vent connectors of listed type B vent
material which shall be assembled according to the
manufacturer’s instructions. Joints between sections
of single wall connector piping shall be fastened by
screws or other approved means.
13 − When the vent connector used for Category I appliances must be located in or pass through a crawlspace or other areas which may be cold, that portion of
the vent connector shall be constructed of listed
double-wall type B vent material or material having
equivalent insulation qualities.
14 − All venting pipe passing through floors, walls, and ceilings must be installed with the listed clearance to combustible materials and be fire stopped according to local codes. In absence of local codes, refer to NFGC
(Z223.1).
15 − No portion of the venting system can extend into, or
pass through any circulation air duct or plenum.
16 − Vent connectors serving Category I appliances shall
not be connected to any portion of mechanical draft
systems operating under positive pressure such as
Category III or IV venting systems.
Page 13
chimney.
17 − If vent connectors are combined prior to entering the
common vent, the maximum common vent capacity
21 − When connecting this appliance to an existing dedilisted in the common venting tables must be reduced
cated or common venting system, you must inspect the
by 10%, the equivalent of one 90° elbow (0.90 x maxiventing system’s general condition and look for signs
mum common vent capacity).
of corrosion. The existing vent pipe size must conform
18 − The common vent diameter must always be at least as
to these instructions and the provided venting tables
large as the largest vent connector diameter.
for the USA, and the appropriate venting tables in the
19 − In no case, shall the vent connector be sized more than
standards of the CSA B149 Natural Gas and Propane
two consecutive table size diameters over the size of
Installation Codes for Canada. If the existing venting
the draft hood outlet or flue collar outlet.
system does not meet these requirements, it must be
20 − Do not install a manual damper, barometric draft reguresized.
lator or flue restrictor between the furnace and the
TABLE 5
Capacity of Type B Double−Wall Vents with Type B Double−Wall Connectors
Serving a Single Category I Appliance
Vent and Connector Diameter − D (inches)
Height
H
(feet)
6
8
10
15
20
30
Lateral
L
(feet)
3 Inch
4 Inch
5 Inch
6 Inch
Appliance Input Rating in Thousands of Btu Per Hour
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
0
0
78
0
152
0
251
0
375
2
13
51
18
97
27
157
32
232
4
21
49
30
94
39
153
50
227
6
25
46
36
91
47
149
59
223
0
0
84
0
165
0
276
0
415
2
12
57
16
109
25
178
28
263
5
23
53
32
103
42
171
53
255
8
28
49
39
98
51
164
64
247
0
0
88
0
175
0
295
0
447
2
12
61
17
118
23
194
26
289
5
23
57
32
113
41
187
52
280
10
30
51
41
104
54
176
67
267
0
0
94
0
191
0
327
0
502
2
11
69
15
136
20
226
22
339
5
22
65
30
130
39
219
49
330
10
29
59
40
121
51
206
64
315
15
35
53
48
112
61
195
76
301
0
0
97
0
202
0
349
0
540
2
10
75
14
149
18
250
20
377
5
21
71
29
143
38
242
47
367
10
28
64
38
133
50
229
62
351
15
34
58
46
124
59
217
73
337
20
48
52
55
116
69
206
84
322
0
0
100
0
213
0
374
0
587
2
9
81
13
166
14
283
18
432
5
21
77
28
160
36
275
45
421
10
27
70
37
150
48
262
59
405
15
33
64
44
141
57
249
70
389
20
56
58
53
132
66
237
80
374
30
NR
NR
73
113
88
214
104
346
NOTE − Single appliance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system. For all other
vent configurations, the vent system is assumed to have two 90° elbows. For each additional 90° elbow or equivalent (for example two 45°
elbows equal one 90° elbow) beyond two, the maximum capacity listed in the venting table should be reduced by 10 percent (0.90 x maximum listed capacity).
Page 14
TABLE 6
Capacity of Type B Double−Wall Vents with Single−Wall Metal Connectors
Serving a Single Category I Appliance
Vent and Connector Diameter − D (inches)
Height
H
(feet)
6
8
10
15
20
30
Lateral
L
(feet)
3 Inch
4 Inch
5 Inch
6 Inch
Appliance Input Rating in Thousands of Btu Per Hour
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
0
38
77
59
151
85
249
126
373
2
39
51
60
96
85
156
123
231
4
NR
NR
74
92
102
152
146
225
6
NR
NR
83
89
114
147
163
220
0
37
83
58
164
83
273
123
412
2
39
56
59
108
83
176
121
261
5
NR
NR
77
102
107
168
151
252
8
NR
NR
90
95
122
161
175
243
0
37
87
57
174
82
293
120
444
2
39
61
59
117
82
193
119
287
5
52
56
76
111
105
185
148
277
10
NR
NR
97
100
132
171
188
261
0
36
93
56
190
80
325
116
499
2
38
69
57
136
80
225
115
337
5
51
63
75
128
102
216
144
326
10
NR
NR
95
116
128
201
182
308
15
NR
NR
NR
NR
158
186
220
290
0
35
96
54
200
78
346
114
537
2
37
74
56
148
78
248
113
375
5
50
68
73
140
100
239
141
363
10
NR
NR
93
129
125
223
177
344
15
NR
NR
NR
NR
155
208
216
325
20
NR
NR
NR
NR
186
192
254
306
0
34
99
53
211
76
372
110
584
2
37
80
55
164
76
281
109
429
5
49
74
72
157
98
271
136
417
10
NR
NR
91
144
122
255
171
397
15
NR
NR
115
131
151
239
208
377
20
NR
NR
NR
NR
181
223
246
357
30
NR
NR
NR
NR
NR
NR
NR
NR
NOTE − Single appliance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system. For all other
vent configurations, the vent system is assumed to have two 90° elbows. For each additional 90° elbow or equivalent (for example two 45°
elbows equal one 90° elbow) beyond two, the maximum capacity listed in the venting table should be reduced by 10 percent (0.90 x maximum listed capacity).
Page 15
TABLE 7
Vent Connector Capacity
Type B Double−Wall Vents with Type B Double−Wall Connectors
Serving Two or More Category I Appliances
Vent
Height
H
(feet)
6
8
10
15
20
30
Vent and Connector Diameter − D (inches)
Connector
Rise
R
(feet)
3 Inch
4 Inch
5 Inch
6 Inch
Appliance Input Rating in Thousands of Btu Per Hour
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
1
22
37
35
66
46
106
58
164
2
23
41
37
75
48
121
60
183
3
24
44
38
81
49
132
62
199
1
22
40
35
72
49
114
64
176
2
23
44
36
80
51
128
66
195
3
24
47
37
87
53
139
67
210
1
22
43
34
78
49
123
65
189
2
23
47
36
86
51
136
67
206
3
24
50
37
92
52
146
69
220
1
21
50
33
89
47
142
64
220
2
22
53
35
96
49
153
66
235
3
24
55
36
102
51
163
68
248
1
21
54
33
99
46
157
62
246
2
22
57
34
105
48
167
64
259
3
23
60
35
110
50
176
66
271
1
20
62
31
113
45
181
60
288
2
21
64
33
118
47
190
62
299
3
22
66
34
123
48
198
64
309
TABLE 8
Common Vent Capacity
Type B Double−Wall Vents with Type B Double−Wall Connectors
Serving Two or More Category I Appliances
Vent
Height
H
(feet)
Common Vent Diameter − D (inches)
4 Inch
5 Inch
6 Inch
7 Inch
Appliance Input Rating in Thousands of Btu Per Hour
FAN + FAN
FAN + NAT
FAN + FAN
FAN + NAT
FAN + FAN
FAN + NAT
FAN + FAN
FAN + NAT
6
92
81
140
116
204
161
309
248
8
101
90
155
129
224
178
339
275
10
110
97
169
141
243
194
367
299
15
125
112
195
164
283
228
427
352
20
136
123
215
183
314
255
475
394
30
152
138
244
210
361
297
547
459
Page 16
TABLE 9
Vent Connector Capacity
Type B Double−Wall Vents with Single−Wall Metal Connectors
Serving Two or More Category I Appliances
Vent
Height
H
(feet)
6
15
30
Vent and Connector Diameter − D (inches)
Connector
Rise
R
(feet)
3 Inch
4 Inch
5 Inch
6 Inch
Appliance Input Rating in Thousands of Btu Per Hour
MIN
MAX
MIN
MAX
MIN
MAX
MIN
1
NR
NR
NR
NR
NR
NR
NR
MAX
NR
2
NR
NR
NR
NR
NR
NR
168
182
3
NR
NR
NR
NR
121
131
174
198
1
NR
NR
79
87
116
138
177
214
2
NR
NR
83
94
121
150
185
230
3
NR
NR
87
100
127
160
193
243
1
47
60
77
110
113
175
169
278
2
50
62
81
115
117
185
177
290
3
54
64
85
119
122
193
185
300
TABLE 10
Common Vent Capacity
Type B Double−Wall Vents with Single−Wall Metal Connectors
Serving Two or More Category I Appliances
Vent
Height
H
(feet)
Common Vent Diameter − D (inches)
4 Inch
5 Inch
6 Inch
7 Inch
Appliance Input Rating in Thousands of Btu Per Hour
FAN + FAN
FAN + NAT
FAN + FAN
FAN + NAT
FAN + FAN
FAN + NAT
FAN + FAN
FAN + NAT
6
89
78
136
113
200
158
304
244
8
98
87
151
126
218
173
331
269
10
106
94
163
137
237
189
357
292
15
121
108
189
159
275
221
416
343
20
131
118
208
177
305
247
463
383
30
145
132
236
202
350
286
533
446
Removal of the Furnace from Common Vent
In the event that an existing furnace is removed from a
venting system commonly run with separate gas appliances, the venting system is likely to be too large to properly vent the remaining attached appliances.
Conduct the following test while each appliance is operating and the other appliances (which are not operating) remain connected to the common venting system. If the venting system has been installed improperly, you must
correct the system as indicated in the general venting requirements section.
1 − Seal any unused openings in the common venting system.
2 − Inspect the venting system for proper size and horizontal pitch. Determine that there is no blockage, restriction, leakage, corrosion, or other deficiencies which
could cause an unsafe condition.
3 − Close all building doors and windows and all doors between the space in which the appliances remaining
connected to the common venting system are located
4−
5−
6−
7−
Page 17
and other spaces of the building. Turn on clothes dryers and any appliances not connected to the common
venting system. Turn on any exhaust fans, such as
range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers.
Follow the lighting instructions. Turn on the appliance
that is being inspected. Adjust the thermostat so that
the appliance operates continuously.
After the main burner has operated for 5 minutes, test
for leaks of flue gases at the draft hood relief opening.
Use the flame of a match or candle, or smoke from a
cigarette, cigar, or pipe.
After determining that each appliance connected to the
common venting system is venting properly, (step 3)
return all doors, widows, exhaust fans, fireplace dampers, and any other gas−burning appliances to their previous mode of operation.
If a venting problem is found during any of the preceding tests, the common venting system must be modified to correct the problem.
Resize the common venting system to the minimum
vent pipe size determined by using the appropriate
tables in Appendix G. (These are in the current standards of the National Fuel Gas Code ANSI Z223.1 in
the USA, and the appropriate Category 1 Natural Gas
and Propane appliances venting sizing tables in the
current standards of the CSA B149 Natural Gas and
Propane Installation Codes in Canada.)
Gas Piping
CAUTION
If a flexible gas connector is required or allowed by
the authority that has jurisdiction, black iron pipe
shall be installed at the gas valve and extend outside
the furnace cabinet.
3 − The gas piping must not run in or through air ducts,
clothes chutes, gas vents or chimneys, dumb waiters,
or elevator shafts.
4 − The piping should be sloped 1/4 inch (6.4 mm) per 15
feet (4.57 m) upward toward the meter from the furnace. The piping must be supported at proper intervals
[every 8 to 10 feet (2.44 to 3.01 m)] with suitable hangers or straps. Install a drip leg inside vertical pipe runs
to the unit.
5 − A 1/8" N.P.T. plugged tap or pressure post is located
on the gas valve to facilitate test gauge connection.
See figures 20 and 21.
6 − In some localities, codes may require the installation of
a manual main shut-off valve and union (furnished by
the installer) external to the unit. The union must be of
the ground joint type.
Gas Supply
1 − This unit is shipped standard for left or right side installation of gas piping. Connect the gas supply to the piping assembly.
2 − When connecting the gas supply piping, consider factors such as length of run, number of fittings, and furnace rating to avoid excessive pressure drop. Table 11
lists recommended pipe sizes for typical applications.
IMPORTANT
Compounds used on threaded joints of gas piping
must be resistant to the actions of liquified petroleum gases.
NOTE − If emergency shutoff is necessary, shut off the
main manual gas valve and disconnect main power to the
furnace. The installer should properly label these devices.
TABLE 11
Gas Pipe Capacity − ft3/hr (m3/hr)
Nominal
Iron Pipe
Size
inches
(mm)
Internal
Diameter
inches
(mm)
10
(3.048)
20
(6.096)
30
(9.144)
40
(12.192)
50
(15.240)
60
(18.288)
70
(21.336)
80
(24.384)
90
(27.432)
100
(30.480)
3/8
(9.53)
.493
(12.522)
95
(2.69)
65
(1.84)
52
(1.47)
45
(1.27)
40
(1.13)
36
(1.02)
33
(.73)
31
(.88)
29
(.82)
27
(.76)
1/2
(12.7)
.622
(17.799)
175
(4.96)
120
(3.40)
97
(2.75)
82
(2.32)
73
(2.07)
66
(1.87)
61
(1.73)
57
(1.61)
53
(1.50)
50
(1.42)
3/4
(19.05)
.824
(20.930)
360
(10.19)
250
(7.08)
200
(5.66)
170
(4.81)
151
(4.28)
138
(3.91)
125
(3.54)
118
(3.34)
110
(3.11)
103
(2.92)
1
(25.4)
1.049
(26.645)
680
(919.25)
465
(13.17)
375
(10.62)
320
(9.06)
285
(8.07)
260
(7.36)
240
(6.80)
220
(6.23)
205
(5.80)
195
(5.52)
1−1/4
(31.75)
1.380
(35.052)
1400
(39.64)
950
(26.90)
770
(21.80)
660
(18.69)
580
(16.42)
530
(15.01)
490
(13.87)
460
(13.03)
430
(12.18)
400
(11.33)
1−1/2
(38.1)
1.610
(40.894)
2100
(59.46)
460
(41.34)
1180
(33.41)
990
(28.03)
900
(25.48)
810
(22.94)
750
(21.24)
690
(19.54)
650
(18.41)
620
(17.56)
2
(50.8)
2.067
(52.502)
3950
(111.85)
2750
(77.87)
2200
(62.30)
1900
(53.80)
1680
(47.57)
1520
(43.04)
1400
(39.64)
1300
(36.81)
1220
(34.55)
1150
(32.56)
2−1/2
(63.5)
2.469
(67.713)
6300
(178.39)
4350
(123.17)
3520
(99.67)
3000
(84.95
2650
(75.04)
2400
(67.96)
2250
(63.71)
2050
(58.05)
1950
(55.22)
1850
(52.38)
3
(76.2)
3.068
(77.927)
11000
(311.48)
7700
(218.03)
6250
(176.98)
5300
(150.07)
4750
(134.50)
4300
(121.76)
3900
(110.43)
3700
(104.77)
3450
(97.69)
3250
(92.03)
Length of Pipe − feet (m)
NOTE − Capacity given in cubic feet (m 3 ) of gas per hour and based on 0.60 specific gravity gas.
Page 18
Left Side Piping
(Standard)
AUTOMATIC
GAS VALVE
(with manual
shut−off valve)
MANUAL
MAIN SHUT−OFF
VALVE
MANUAL
MAIN SHUT−OFF
VALVE
AUTOMATIC
GAS VALVE
(with manual
shut−off valve)
GROUND
JOINT
UNION
GROUND
JOINT
UNION
DRIP LEG
Right Side Piping
(Alternate)
FIELD
PROVIDED
AND INSTALLED
DRIP LEG
FIGURE 13
Leak Check
Electrical
After gas piping is completed, carefully check all piping
connections (factory− and field−installed) for gas leaks. Use
a leak detecting solution or other preferred means.
NOTE − If emergency shutoff is necessary, shut off the
main manual gas valve and disconnect the main power to
the furnace. The installer should properly label these devices.
ELECTROSTATIC DISCHARGE (ESD)
Precautions and Procedures
CAUTION
Some soaps used for leak detection are corrosive to
certain metals. Carefully rinse piping thoroughly after leak test has been completed. Do not use
matches, candles, flame or other sources of ignition
to check for gas leaks.
Electrostatic discharge can affect electronic components. Take precautions during furnace installation
and service to protect the furnace’s electronic controls. Precautions will help to avoid control exposure
to electrostatic discharge by putting the furnace, the
control and the technician at the same electrostatic
potential. Neutralize electrostatic charge by touching hand and all tools on an unpainted unit surface,
such as the gas valve or blower deck, before performing any service procedure.
The furnace must be isolated from the gas supply system
by closing its individual manual shut-off valve during any
pressure testing of the gas supply system at pressures less
than or equal to 1/2 psig (3.48 kPa, 14 inches w.c.).
The unit is equipped with a field make−up box. The make−
up box may be moved to the right side of the furnace to facilitate installation. Secure the excess wire to the existing
harness to protect it from damage.
CAUTION
INTERIOR MAKE−UP BOX INSTALLATION
(Left Side)
IMPORTANT
When testing pressure of gas lines, gas valve must
be disconnected and isolated. See figure 14. Gas
valves can be damaged if subjected to pressures
greater than 1/2 psig (3.48 kPa, 14 inches w.c.).
MANUAL MAIN
SHUT−OFF VALVE
WILL NOT HOLD
NORMAL TEST
PRESSURE
MAKE−UP
BOX
ISOLATE
GAS VALVE
FURNACE
CAP
FIGURE 15
FIGURE 14
Page 19
USA and current Canadian Electric Code part 1 (CSA
standard C22.1) for Canada. A green ground wire is
provided in the field make−up box.
NOTE − The G60DFV(X) furnace contains electronic
components that are polarity sensitive. Make sure
that the furnace is wired correctly and is properly
grounded.
INTERIOR MAKE−UP BOX INSTALLATION
(Right Side)
MAKE−UP
BOX
FIGURE 16
Refer to figure 17 for schematic wiring diagram and troubleshooting and table 12 and figure 18 for field wiring.
1 − Select circuit protection and wire size according to the
unit nameplate. The power supply wiring must meet
Class I restrictions.
2 − Holes are on both sides of the furnace cabinet to facilitate wiring.
3 − Install a separate disconnect switch (protected by either fuse or circuit breaker) near the furnace so that
power can be turned off for servicing.
4 − Before connecting the thermostat or the power wiring,
check to make sure the wires will be long enough for
servicing at a later date. Remove the blower access
panel to check the length of the wire.
5 − Complete the wiring connections to the equipment.
Use the provided unit wiring diagram and the field wiring diagrams shown in table 12 and figure 18. Use
18−gauge wire or larger that is suitable for Class II rating for thermostat connections.
6 − Electrically ground the unit according to local codes or,
in the absence of local codes, according to the current
National Electric Code (ANSI/NFPA No. 70) for the
7 − One line voltage EAC" 1/4" spade terminal is provided
on the furnace integrated control. Any electronic air
cleaner rated up to one amp can be connected to this
terminal with the neutral leg of the circuit being connected to the one of the provided neutral terminals.
See figure 19 for control configuration. This terminal is
energized when the indoor blower is operating.
8 − One line voltage HUM" 1/4" spade terminal is provided on the furnace integrated control. Any humidifier
rated up to one amp can be connected to this terminal
with the neutral leg of the circuit being connected to
one of the provided neutral terminals. See figure 19 for
control configuration. This terminal is energized in the
heating mode whenever the combustion air inducer is
operating.
9 − One 24V H" terminal is provided on the furnace control
terminal block. Any humidifier rated up to 0.5 amp can
be connected to this terminal with the ground leg of the
circuit being connected to either ground or the C" terminal. See figure 19 for control configuration.
10 −Install the room thermostat according to the instructions provided with the thermostat. See table 12 for
field wiring connections in varying applications. If the
furnace is being matched with a heat pump, refer to the
instruction packaged with the dual fuel thermostat.
Indoor Blower Speeds
1 − When the thermostat is set to FAN ON," the indoor
blower will run continuously at approximately 38% of
the second−stage cooling speed when there is no cooling or heating demand.
2 − When the G60DFV(X) is running in the heating mode,
the indoor blower will run on the heating speed designated by the positions of dip switches 11 and 12.
3 − When there is a cooling demand, the indoor blower will
run on the cooling speed designated by the positions
of dip switches 5 and 6.
Page 20
TABLE 12
Field Wiring Applications
Thermostat
DIP Switch Setting and On−Board Links (See figure 19)
W915
W914 DehuW951
Two−Stage
midification
DIP Switch 1
Cooling
or Harmony Heat Pumps
III
Wiring Connections
1 Heat / 1 Cool
NOTE − Use DIP
switch 2 to set
second−stage
heat ON delay.
OFF−10 minutes. ON−15
minutes.
ON
Intact
Intact
Intact
S1
T’STAT
1 Heat / 2 Cool
NOTE − Use DIP
switch 2 to set
second−stage
heat ON delay.
OFF−10 minutes. ON−15
minutes.
ON
Cut
Intact
Intact
S1
T’STAT
1 Heat / 2 Cool
with t’stat with
humidity control
NOTE − Use DIP
switch 2 to set
second−stage
heat ON delay.
OFF−10 minutes. ON−15
minutes.
ON
Cut
Cut
Intact
Page 21
S1
T’STAT
CONTROL
TERM. STRIP
CONTROL
TERM. STRIP
OUTDOOR
UNIT
OUTDOOR
UNIT
CONTROL
OUTDOOR
TERM. STRIP
UNIT
TABLE 12
Field Wiring Applications (Continued)
Thermostat
DIP Switch Setting and On−Board Links (See figure 19)
W915
W914 DehuW951
Two−Stage
midification
DIP Switch 1
Cooling
or Harmony Heat Pumps
III
2 Heat / 2 Cool
OFF
Cut
Intact
Intact
2 Heat / 2 Cool
with t’stat with
humidity control
OFF
Cut
Cut
Intact
2 Heat / 1 Cool
OFF
Intact
Intact
Intact
Page 22
Wiring Connections
S1
T’STAT
S1
T’STAT
S1
T’STAT
CONTROL
TERM. STRIP
OUTDOOR
UNIT
CONTROL
OUTDOOR
TERM. STRIP
UNIT
CONTROL
TERM. STRIP
OUTDOOR
UNIT
G60DFV(X) Schematic Wiring Diagram
FIGURE 17
Page 23
TYPICAL G60DFV(X) FIELD WIRING DIAGRAM
FIELD INSTALLED CLASS II 24V
FIELD INSTALLED LINE VOLTAGE
FIGURE 18
TWO−STAGE, VARIABLE SPEED INTEGRATED CONTROL
1/4" QUICK CONNECT TERMINALS
NEUTRALS= 120 VAC NEUTRAL
THERMOSTAT CONNECTIONS (TB1)
DIAGNOSTIC
LEDs
INDOOR
BLOWER DIP
SWITCHES
HEATING
DIP
SWITCHES
H= 24V HUMIDIFIER OUTPUT
L= LENNOX SYSTEM OPERATION MONITOR
1= FUTURE USE
ON−BOARD
LINKS
DIP SWITCH FUNCTIONS
HTG DIP SWITCH(ES)
W915
W951
W914
1
2
3 and 4
INDOOR BLOWER
DIP SWITCH(ES)
5 and 6
7 and 8
9 and 10
11 and 12
FIGURE 19
Page 24
FUNCTION
T’stat Heat Stages (single or two−stage)
Second Stage ON Delay (single−stage t’stat)
Heating Fan OFF Delay
FUNCTION
Cooling Mode Blower Speed
Blower Speed Adjustment
Cooling Mode Blower Ramping Profile
Heating Mode Blower Speed
Integrated Control
G60DFV units are equipped with a two−stage, variable
speed integrated control. This control manages ignition
timing, heating mode fan off delays and indoor blower
speeds based on selections made using the control DIP
switches. The control includes an internal watchguard feature which automatically resets the integrated control when
it has been locked out. After one hour of continuous thermostat demand for heat, the watchguard will break and remake thermostat demand to the furnace and automatically
reset the control to relight the furnace.
Heating Operation DIP Switch Settings
Switch 1 −− Thermostat Selection −− This unit may be
used with either a single−stage or two−stage thermostat.
The thermostat selection is made using a DIP switch which
must be properly positioned for the particular application.
TheDIP switch is factory−positioned for use with a two−
stage thermostat. If a single−stage thermostat is to be used,
the DIP switch must be repositioned.
a − Select OFF" for two−stage heating operation controlled by a two−stage heating thermostat (factory setting);
b − Select ON" for two−stage heating operation controlled by a single−stage heating thermostat. This setting provides a timed delay before second−stage heat
is initiated.
Switch 2 −− Second Stage Delay (Used with Single−
Stage Thermostat Only) −− This switch is used to determine the second stage on delay when a single−stage thermostat is being used. The switch is factory−set in the OFF
position, which provides a 10−minute delay before second−
stage heat is initiated. If the switch is toggled to the ON
position, it will provide a 15−minute delay before second−
stage heat is initiated. This switch is only activated when
the thermostat selector jumper is positioned for SINGLE−
stage thermostat use.
Switches 3 and 4 −− Blower−Off Delay −− The blower−on
delay of 45 seconds is not adjustable. The blower−off delay
(time that the blower operates after the heating demand
has been satisfied) can be adjusted by moving switches 3
and 4 on the integrated control. The unit is shipped from the
factory with a blower−off delay of 90 seconds. The blower
off delay affects comfort and is adjustable to satisfy individual applications. Adjust the blower off delay to achieve a
supply air temperature between 90° and 110°F at the exact
moment that the blower is de−energized. Longer off delay
settings provide lower supply air temperatures; shorter settings provide higher supply air temperatures.Table 13 provides the blower off timings that will result from different
switch settings.
TABLE 13
Blower Off Delay Switch Settings
Blower Off Delay
Switch 3
Switch 4
(Seconds)
60
Off
On
90
Off
Off
120
On
Off
180
On
On
Indoor Blower Operation DIP Switch Settings
Switches 5 and 6 −− Cooling Mode Blower Speed −−
Switches 5 and 6 are used to select cooling blower motor
speed. The unit is shipped from the factory with the dip
switches positioned for high speed (4) indoor blower motor
operation during the cooling mode. The table below provides the cooling mode blower speeds that will result from
different switch settings. Refer to tables 18 through 22 for
corresponding cfm values.
TABLE 14
Cooling Mode Blower Speeds
Speed
Switch 5
Switch 6
1 − Low
On
On
2 − Medium Low
Off
On
3 − Medium High
On
Off
4 − High (Factory)
Off
Off
Switches 7 and 8 −− Blower Speed Adjustment −−
Switches 7 and 8 are used to select blower speed adjustment settings. The unit is shipped from the factory with the
dip switches positioned for NORMAL (no) adjustment. The
dip switches may be positioned to adjust the blower speed
by +10% or −10% to better suit the application. The table
below provides blower speed adjustments that will result
from different switch settings. Refer to tables 18 through 22
for corresponding cfm values.
TABLE 15
Blower Speed Adjustment
Adjustment
Switch 7
Switch 8
+10% (approx.)
On
Off
NORMAL (Factory)
Off
Off
−10% (approx.)
Off
On
Switches 9 and 10 −− Cooling Mode Blower Speed
Ramping −− Switches 9 and 10 are used to select cooling
mode blower speed ramping options. Blower speed ramping may be used to enhance dehumidification performance. The switches are factory set at option A which has
the greatest effect on blower motor performance. Table 16
provides the cooling mode blower speed ramping options
that will result from different switch settings. The cooling
mode blower speed ramping options are detailed on the
next page.
NOTE − The off portion of the selected ramp profile also applies during heat pump operation in dual fuel applications.
Page 25
TABLE 16
Cooling Mode Blower Speed Ramping
Ramping Option
A (Factory)
B
C
D
Switch 9
Off
On
Off
On
Switch 10
Off
Off
On
On
Ramping Option A (Factory Selection)
Motor runs at 50% for 30 seconds.
Motor then runs at 82% for approximately 7−1/2 minutes.
If demand has not been satisfied after 7−1/2 minutes,
motor runs at 100% until demand is satisfied.
Once demand is met, motor runs at 50% for 30 seconds then ramps down to stop.
D
D
D
D
7 1/2 MIN
82% CFM
OFF
100%
CFM
OFF
1/2 MIN
50% CFM
1/2 MIN
50% CFM
COOLING DEMAND
S
S
Ramping Option B
Motor runs at 82% for approximately 7−1/2 minutes. If
demand has not been satisfied after 7−1/2 minutes,
motor runs at 100% until demand is satisfied.
Once demand is met, motor ramps down to stop.
7 1/2 MIN
82%CFM
OFF
100% CFM
OFF
COOLING DEMAND
S
S
Ramping Option C
Motor runs at 100% until demand is satisfied.
Once demand is met, motor runs at 100% for 45 seconds then ramps down to stop.
OFF
100% CFM
100% CFM
DEMAND
45 SEC.
Ramping Option D
S Motor runs at 100% until demand is satisfied.
S
Once demand is met, motor ramps down to stop.
OFF
100% CFM
COOLING
DEMAND
OFF
OFF
Switches 11 and 12 −− Heating Mode Blower Speed −−
Switches 11 and 12 are used to select heating mode blower
motor speed. The unit is shipped from the factory with the
dip switches positioned for medium low (2) speed indoor
blower motor operation during the heating mode. The table
below provides the heating mode blower speeds that will
result from different switch settings. Refer to tables 18
through 22 for corresponding cfm values.
TABLE 17
Heating Mode Blower Speeds
Speed
Switch 11
Switch 12
1 − Low
On
On
2 − Medium Low
Off
On
(Factory)
3 − Medium High
On
Off
4 − High
Off
Off
On−Board Link W914
On−board link W914, is a clippable connection between terminals DS and R on the integrated control. W914 must be
cut when the furnace is installed with either the Harmony
IIIt zone control or a thermostat which features humidity
control. If the link is left intact the PMW signal from the Harmony III control will be blocked and also lead to control
damage. Refer to table 23 for operation sequence in applications including G60DFV, a thermostat which features
humidity control and a single−speed outdoor unit. Table 24
gives the operation sequence in applications with a two−
speed outdoor unit.
On−Board Link W951
On−board link W951 is a clippable connection between terminals R and O on the integrated control. W951 must be cut
when the furnace is installed in applications which include a
heat pump unit and a thermostat which features dual fuel
use. If the link is left intact, terminal O" will remain energized eliminating the HEAT MODE in the heat pump.
On−Board Link W915
On−board link W915 is a clippable connection between terminals Y1 and Y2 on the integrated control. W915 must be
cut if two−stage cooling will be used. If the link is not cut the
outdoor unit will operate in second−stage cooling only.
Status LEDs (SPEED, CFM, STATUS, E−COM)
The green SPEED LED indicates circulating blower speed
in response to the DS signal. The LED is lit during normal
blower operation and is off during a dehumidification demand. In Harmony III applications, the brightness of the
LED indicates the requested blower speed.
The green CFM LED indicates the blower air flow. Count
the number of blinks between the two−second pauses to
determine the CFM. Each blink represents approximately
100 CFM.
The STATUS LED flashes diagnostic codes, which are detailed on page 38.
The green E−COM LED indicates that the control is receiving and processing of commands and inputs. The LED may
flash rapidly or may display a single flash, depending upon
the activity.
Page 26
TABLE 18
G60DFV−36A−070 BLOWER MOTOR PERFORMANCE
0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range
Factory Settings: Heating Speed − 2; Cooling Speed − 4; Speed Adjust − NORM
ADJUST"
Switch
Positions
+
1 NORM
ADJUST"
Switch
S
tc
P iti
Positions
+
1 NORM
Speed Switch Positions
Second Stage HEAT" Speed
Second Stage COOL" Speed
1
14
1
2
3
4
1
2
3
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
945
445 1105 525 1375 650 1425 670 1105 520 1290 610 1390 655 1505 710
855
405 995 470 1240 585 1285 605 1010 475 1140 540 1240 585 1360 645
785
370 885 420 1090 515 1125 530 875 415 1025 485 1090 515 1195 565
First Stage HEAT" Speed
First Stage COOL" Speed
1
14
1
2
3
4
1
2
3
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
855
405 1005 475 1240 585 1295 610 765 360 855 405 910 430 1000 470
795
375 900 425 1110 525 1165 550 710 335 790 375 840 395 905 430
730
345 810 385 990 465 1025 485 660 310 725 345 765 360 810 385
1 Factory
default jumper setting.
NOTES − The effect of static pressure is included in air volumes shown.
Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position.
Lennox Harmony IIIt Zone Control Applications − Minimum blower speed is 426 cfm (201 L/s).
TABLE 19
G60DFV−36B−090 BLOWER MOTOR PERFORMANCE
0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range
Factory Settings: Heating Speed − 2; Cooling Speed − 4; Speed Adjust − NORM
ADJUST"
Switch
Positions
+
1 NORM
ADJUST"
Switch
S
tc
P iti
Positions
+
1 NORM
Speed Switch Positions
Second Stage HEAT" Speed
Second Stage COOL" Speed
12
14
1
3
4
1
2
3
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
1005 475 1165 550 1435 680 1495 705 1145 540 1330 625 1425 675 1555 735
920
435 1055 495 1295 610 1350 635 1040 490 1195 565 1285 605 1405 660
N/A
N/A 935 440 1150 540 1185 560 920 435 1060 500 1140 540 1235 585
First Stage HEAT" Speed
First Stage COOL" Speed
12
14
1
3
4
1
2
3
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
915
430 1060 500 1300 615 1350 640 805 380 910 430 970 455 1055 495
840
395 955 450 1170 555 1210 570 745 350 825 390 875 410 950 450
N/A
N/A 860 405 1040 490 1080 510 695 330 765 360 800 380 860 405
1 Factory
default jumper setting.
N/A − First and second stage HEAT positions shown cannot be used on this model.
NOTES − The effect of static pressure is included in air volumes shown.
Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position.
Lennox Harmony IIIt Zone Control Applications − Minimum blower speed is 523 cfm (245 L/s).
Page 27
TABLE 20
G60DFV−60C−090 BLOWER MOTOR PERFORMANCE
0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range
Factory Settings: Heating Speed − 2; Cooling Speed − 4; Speed Adjust − NORM.
ADJUST"
Switch
Positions
+
1 NORM
ADJUST"
Switch
S
tc
P iti
Positions
+
1 NORM
Speed Switch Positions
Second Stage HEAT" Speed
Second Stage COOL" Speed
12
14
1
3
4
1
2
3
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
1620 765 1820 860 2030 960 2260 1065 1750 825 1860 880 2100 990 2365 1115
1465 690 1660 785 1865 880 2060 975 1565 740 1685 795 1905 900 2130 1005
1300 615 1475 695 1675 790 1845 870 1390 655 1505 710 1710 810 1920 905
First Stage HEAT" Speed
First Stage COOL" Speed
12
14
1
3
4
1
2
3
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
1470 695 1685 795 1885 890 2060 970 1200 565 1280 605 1460 690 1665 785
1325 625 1515 715 1725 815 1885 890 1090 515 1165 550 1315 620 1475 695
1200 565 1335 630 1520 715 1695 800 970 455 1050 495 1190 560 1315 620
1 Factory
default jumper setting.
NOTES − The effect of static pressure is included in air volumes shown.
Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position.
Lennox Harmony IIIt Zone Control Applications − Minimum blower speed is 520 cfm (245 L/s).
TABLE 21
G60DFV−60C−110 BLOWER MOTOR PERFORMANCE
0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range
Factory Settings: Heating Speed − 2; Cooling Speed − 4; Speed Adjust − NORM.
ADJUST"
Switch
Positions
+
1 NORM
ADJUST"
Switch
S
tc
P iti
Positions
+
1 NORM
Speed Switch Positions
Second Stage HEAT" Speed
Second Stage COOL" Speed
12
14
1
3
4
1
2
3
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
1565 740 1765 835 1980 935 2210 1040 1685 795 1800 850 2035 960 2295 1080
1400 660 1620 765 1805 850 1995 940 1510 715 1645 775 1855 875 2075 980
N/A
N/A 1415 670 1615 760 1780 840 1340 630 1450 685 1670 790 1845 870
First Stage HEAT" Speed
First Stage COOL" Speed
12
14
1
3
4
1
2
3
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
1415 670 1625 765 1815 860 2000 945 1150 545 1235 580 1400 660 1585 745
1280 605 1465 690 1655 780 1830 865 1045 495 1130 530 1265 595 1420 670
N/A
N/A 1290 610 1465 690 1645 775 930 440 1000 470 1135 535 1265 595
1 Factory
default jumper setting.
N/A − First and second stage HEAT positions shown cannot be used on this model.
NOTES − The effect of static pressure is included in air volumes shown.
Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position.
Lennox Harmony IIIt Zone Control Applications − Minimum blower speed is 475 cfm (225 L/s).
Page 28
TABLE 22
G60DFV−60D−135 BLOWER MOTOR PERFORMANCE
0.0" to 0.8" w.g. (0 through 200 Pa) External Static Pressure Range
Factory Settings: Heating Speed − 2; Cooling Speed − 4; Speed Adjust − NORM.
ADJUST"
Switch
Positions
+
1 NORM
−
ADJUST"
Switch
S
tc
P iti
Positions
+
NORM
Speed Switch Positions
Second Stage HEAT" Speed
Second Stage COOL" Speed
12
14
1
3
4
1
2
3
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
1570 740 1785 845 2000 945 2235 1055 1680 795 1810 855 2050 970 2310 1090
1410 665 1610 760 1825 860 2020 955 1500 710 1645 775 1865 880 2095 990
N/A
N/A 1420 670 1620 765 1805 850 1340 630 1440 680 1670 790 1865 880
First Stage HEAT" Speed
First Stage COOL" Speed
12
14
1
3
4
1
2
3
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
cfm
L/s
1415 670 1630 770 1840 670 2030 955 1160 550 1235 580 1400 660 1595 750
1280 605 1465 690 1665 785 1850 875 1045 495 1125 530 1265 600 1420 670
N/A
N/A 1295 610 1475 695 1645 775 935 440 1005 475 1145 540 1270 600
1 Factory
default jumper setting.
N/A − First and second stage HEAT positions shown cannot be used on this model.
NOTES − The effect of static pressure is included in air volumes shown.
Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position.
Lennox Harmony IIIt Zone Control Applications − Minimum blower speed is 477 cfm (225 L/s).
TABLE 23
OPERATING SEQUENCE
G60DFV, Thermostat with Humidity Control Feature and Single−Speed Outdoor Unit
OPERATING MODE
SYSTEM DEMAND
SYSTEM RESPONSE
System Condition
Thermostat
Demand
*Relative Humidity
(EfficiencyPlus Lights)
Blower
CFM
(COOL)
Normal operation
Y1
COOL
Compressor demand and indoor blower
speed controlled by thermostat demand.
*Call for humidity
removal during
cooling demand
Y1
No demand. Humidity
level is acceptable
Humidity level rises
above setpoint. Demand
initiated.
60%/65%
of COOL
Call for dehumidification initiated by thermostat. Indoor blower speed reduced by
thermostat.
When humidity demand is satisfied, blower speed immediately increases to the
COOL CFM to hasten the end of the cycle.
Dehumidification
demand satisfied
during cooling demand.
Call for cooling after
call for humidity
removal.
Humidity demand
satisfied between
thermostat demands
(unit off cycle).
Y1
Humidity level falls below
setpoint. No demand
COOL
None
Humidity level above setpoint. Demand initiated.
Off
Y1
Humidity level above setpoint. Demand initiated.
60%/65%
of COOL
None
Over setpoint (1 or more)
Off
Y1
Change to acceptable
COOL
Comments
Dehumidification mode begins when rela
relative humidity is greater than setpoint.
While unit is not operating (no thermostat
demand) slide switch is moved down and
demand),
back up. Blower operates at COOL CFM.
NOTE − When changing unit mode of operation from cooling to heating, indicating lights that are on will stay on until the first thermostat heating demand.
* Reduced blower speed is 65% of COOL for the −36A and −36B units; 60% of COOL for −60C and −60D series units.
Page 29
TABLE 24
OPERATING SEQUENCE
G60DFV, Thermostat with Humidity Control Feature and Two−Speed Outdoor Unit
OPERATING MODE
System
Condition
SYSTEM DEMAND
SYSTEM RESPONSE
Thermostat
Demand
*Relative Humidity
(EfficiencyPlus Lights)
****Compressor
Speed
Blower CFM
(COOL)
Y1
No demand. Acceptable
Low
**42%/46% of
HIGH COOL
Y2
No demand. Acceptable
High
Y1
No demand. Acceptable
Low
HIGH COOL
**42%/46% of
HIGH COOL
Low
**42%/46% of
HIGH COOL
Off
Off
High
***65%/60% of
HIGH COOL
Low
**42%/46% of
HIGH COOL
High
***65%/60% of
HIGH COOL
High
***65%/60% of
HIGH COOL
Y1
Humidity level falls below
setpoint. No demand.
High
HIGH COOL
None
No demand. Acceptable
Off
Off
Y1
No demand. Acceptable
Low
**42%/46% of
HIGH COOL
Y2
No demand. Acceptable
High
HIGH COOL
High
***65%/60% of
HIGH COOL
Normal operation
Call for humidity
removal during
1st−stage cooling
demand
Y1
Demand
satisfied
Y1
Significant increase in
humidity during
thermostat cooling
demand.
Y1
Y1
Y1
Humidity demand
satisfied during
thermostat demand.
Call for humidity
removal during 2nd
stage thermostat
demand
Y2
Y2
Humidity level rises slightly
(1) above setpoint. Demand
initiated.
Humidity level remains
slightly (1) above setpoint.
Demand continues.
Humidity level remains
slightly (1) above setpoint.
Demand continues.
No demand. Acceptable
Humidity level rises significantly (2 or more) above
setpoint. Demand initiated.
Humidity level
above setpoint.
Humidity level rises slightly
(1) above setpoint. Demand
initiated.
No demand. Acceptable
High
HIGH COOL
Off
Off
*Call for 1st stage
cooling after call for
humidity removal.
None
Humidity level is slightly (1)
above setpoint.
Y1
Humidity level is slightly (1)
above setpoint.
Low
**42%/46% of
HIGH COOL
Call for 2nd stage
cooling after call for
humidity removal
None
Humidity level is slightly (1)
above setpoint.
Off
Off
Y2
Humidity level is slightly (1)
above setpoint.
High
***65%/60% of
HIGH COOL
Call for cooling after
significant increase in
humidity
None
Humidity level is significantly
above setpoint (2 or more).
Off
Off
Y1 or Y2
Humidity level is significantly
above setpoint (2 or more).
High
***65%/60% of
HIGH COOL
None
Humidity level is slightly (1)
above setpoint.
Off
Off
Y1 or Y2
Humidity level falls below
setpoint. No demand.
High
HIGH COOL
Humidity demand
satisfied between
thermostat demands
(unit off cycle).
Comments
Compressor demand and indoor
blower speed controlled by
thermostat demand
Dehumidification mode does not begin
until after initial thermostat demand is
satisfied and new cooling demand is
initiated.
If humidity rises significantly above setpoint, or if slide switch is moved signifi
significantly,
l uniti will
ill iimmediately
di l go iinto d
dehumidification mode (in presence of
thermostat demand).
When humidity demand is satisfied,
blower immediately shifts to the COOL
CFM in order to hasten the end of the
cycle Unit can only shift out of high
cycle.
beginspeed compressor operation at begin
ning of next cycle.
Blower immediately changes speed in
response to thermostat demand.
Dehumidification mode (high speed
compressor) begins with next thermothermo
stat demand after initial demand is satisfied.
Reduced blower speed (dehumidification speed) begins immediately with
thermostat demand
If humidity increases significantly over
setpoint, or if slide switch is moved,
unit immediately goes into dehumidifidehumidifi
cation mode (in presence of thermostat
demand).
While unit is not operating (no thermostat demand), slide switch is moved
down and back up
up. Blower and com
compressor operate at high speed until
next thermostat demand.
NOTE − When changing unit mode of operation from cooling to heating, indicating lights that are on will stay on until the first thermostat heating demand.
*IMPORTANT - If power to unit is turned on with thermostat calling for humidity removal, outdoor unit may be locked into high
speed indefinitely. To reset, move humidity slide switch all the way down then back up to desired setpoint (with unit running)
** Reduced blower speed is 42% of HIGH COOL for −36A and −36B units; 46% of HIGH COOL for −60C and −60D series units.
*** Reduced blower speed is 65% of HIGH COOL for −36A and −36B units; 60% of HIGH COOL for −60C and −60D series units.
****If the two−speed control on a two−speed outdoor unit is set for LATCH 2 (15 minutes) or LATCH 3 (30 minutes), the compressor will latch into high speed after a Y1 demand has occurred for that period of time.
Page 30
Unit Start−Up
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING
Do not use this furnace if any part has been underwater. Immediately call a licensed professional service
technician (or equivalent) to inspect the furnace and
to replace any part of the control system and any gas
control which has been under water.
WARNING
If overheating occurs or if gas supply fails to shut off,
shut off the manual gas valve to the appliance before
shutting off electrical supply.
Gas Valve Operation (Figures 20 and 21)
1 − STOP! Read the safety information at the beginning of
this section.
2 − Set the thermostat to the lowest setting.
3 − Turn off all electrical power to the unit.
4 − This furnace is equipped with an ignition device which
automatically lights the burners. Do not try to light the
burners by hand.
5 − Remove the upper access panel.
6 − White Rodgers 36E Gas Valve − Move gas valve control switch to OFF. See figure 20.
Honeywell VR8205 Gas Valve − Turn knob on gas
valve clockwise
to OFF. Do not force. See figure
21.
7 − Wait five minutes to clear out any gas. If you then smell
gas, STOP! Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s instructions. If you do not smell gas go to next step.
WHITE RODGERS 36E SERIES GAS VALVE
CAUTION
HIGH FIRE
MANIFOLD
PRESSURE
ADJUSTMENT
ON SIDE
(under cap)
Before attempting to perform any service or maintenance, turn the electrical power to unit OFF at disconnect switch.
WARNING
During blower operation, the ECM motor emits energy that may interfere with pacemaker operation. Interference is reduced by both the sheet metal cabinet
and distance.
MANIFOLD
PRESSURE
TAP ON SIDE
INLET PRESSURE
TAP ON SIDE
BEFORE LIGHTING smell all around the appliance area
for gas. Be sure to smell next to the floor because some gas
is heavier than air and will settle on the floor.
GAS VALVE SHOWN IN OFF POSITION
FIGURE 20
HONEYWELL VR8205 SERIES GAS VALVE
The gas valve on the G60DFV(X) unit may be equipped
with either a gas control knob or gas control switch. Use
only your hand to move the control switch or to turn the gas
control knob. Never use tools. If the knob will not turn or if
the switch will not move by hand, do not try to repair it. Call a
licensed professional service technician (or equivalent).
Force or attempted repair may result in a fire or explosion.
Placing the furnace into operation:
G60DFV(X) units are equipped with an automatic ignition
system. Do not attempt to manually light burners on these
furnaces. Each time the thermostat calls for heat, the burners will automatically light. The ignitor does not get hot
when there is no call for heat on units with an automatic
ignition system.
WARNING
If you do not follow these instructions exactly, a fire
or explosion may result causing property damage,
personal injury or death.
LOW FIRE MANIFOLD
PRESSURE ADJUSTMENT
ON SIDE (under cap)
HIGH FIRE
ADJUSTING SCREW
(under cap)
MANIFOLD
PRESSURE
TAP
LOW FIRE
ADJUSTING SCREW
(under cap)
INLET PRESSURE
TAP
GAS VALVE SHOWN IN OFF POSITION
FIGURE 21
8 − White Rodgers 36E Gas Valve − Move gas valve control switch to ON. See figure 20.
Honeywell VR8205 Gas Valve − Turn knob on gas
valve counterclockwise
to ON. Do not force. See
figure 21.
9 − Replace the upper access panel.
10 − Turn on all electrical power to to the unit.
Page 31
NOTE − In Canada, certification for installations at elevations over 4500 feet (1372 m) is the jurisdiction of local authorities.
11 − Set the thermostat to desired setting.
NOTE − When unit is initially started, steps 1 through 11
may need to be repeated to purge air from gas line.
NOTE − A natural to L.P. propane gas changeover kit is
necessary to convert this unit. Refer to the changeover kit
installation instruction for the conversion procedure.
12− If the appliance will not operate, follow the instructions
Turning Off Gas to Unit" and call your service technician or gas supplier.
Turning Off Gas to Unit
Other Unit Adjustments
1 − Set the thermostat to the lowest setting.
2 − Turn off all electrical power to the unit if service is to be
performed.
3 − Remove the upper access panel.
4 − White Rodgers 36E Gas Valve − Move gas valve control switch to OFF.
Honeywell VR8205 Gas Valve − Turn knob on gas
valve clockwise
to OFF. Do not force.
5 − Replace the upper access panel.
Primary and Secondary Limits
The primary limit is located on the heating compartment
vestibule panel. The secondary limits (if equipped) are located in the blower compartment, attached to the back side
of the blower. These limits are factory set and require no
adjustment.
Flame Rollout Switches (Two)
Gas Pressure Adjustment
These manually reset switches are located on (or inside of)
the burner box. If tripped, check for adequate combustion
air before resetting.
Gas Flow
To check for proper gas flow to the combustion chamber,
determine the Btu (kW) input from the unit nameplate. Divide this input rating by the Btu (kW) per cubic foot (cubic
meter) of available gas. The result is the required number
of cubic feet (cubic meter) per hour. Determine the flow of
gas through the gas meter for two minutes and multiply by
30 to get the hourly flow of gas.
Pressure Switches
The pressure switch assembly (includes two switches) is
located in the heating compartment adjacent to the combustion air inducer. These switches check for proper combustion air inducer operation before allowing ignition trial.
The switches are factory−set and require no adjustment.
Temperature Rise
Place the unit into operation with a second−stage heating
demand. After supply and return air temperatures have
stabilized, check the temperature rise. If necessary, adjust
the heating blower speed to maintain the temperature rise
within the range shown on the unit nameplate. Increase the
blower speed to decrease the temperature rise. Decrease
the blower speed to increase the temperature rise. Failure
to properly adjust the temperature rise may cause erratic
limit operation and may result in premature heat exchanger
failure.
Gas Pressure
1 − Check the gas line pressure with the unit firing at maximum rate. A minimum of 4.5 in. w.c. for natural gas or
11.0 in. w.c. for LP/propane gas should be maintained.
2 − After the line pressure has been checked and adjusted, check the low fire and high fire manifold pressures. See figures 20 and 21 for the location of the
manifold pressure adjustment screws. Low and high
fire manifold pressures are given in table 25. A natural
gas to LP/propane gas changeover kit is required to
convert the unit.
Thermostat Heat Anticipation
Set the heat anticipator setting (if adjustable) according to
the amp draw listed on the wiring diagram that is attached
Refer to table 25 for high altitude requirements and manto the unit.
ifold pressure settings at all altitudes.
TABLE 25
High Altitude Requirements / Manifold Pressure Settings
High Altitude Information
Altitude
Model
Input
Size
−070, −090,
−110, −135
0 − 7500 ft.
(0 − 2285 m)
Gas
Nat.
Manifold Pressure
at all altitudes
7501−10,000 ft.
(2286 − 3048 m)
Low Fire
High Fire
Required
Conversion Kit
Pressure
Switch
Required
Conversion Kit
Pressure
Switch
in. w.g.
kPa
in. w.g.
kPa
N/A
No Change
44W51
44W31
1.7
0.42
3.5
0.87
LPG
44W48
No Change
44W50
44W31
4.9
1.22
10.0
Pressure switch is factory set. No adjustment necessary. All models use the factory installed pressure switch from 0−7500 feet (0−2285 m).
Page 32
2.5
Electrical
1 − Check all wiring for loose connections.
2 − Check for the correct voltage at the furnace (furnace
operating).
3 − Check amp-draw on the blower motor.
Motor Nameplate__________Actual__________
NOTE − Do not secure the electrical conduit directly to the
air ducts or structure.
Electronic Ignition
The two−stage, variable speed integrated control used in
G60DFV units has an added feature of an internal Watchguard control. The feature serves as an automatic reset device for ignition control lockout caused by ignition failure.
This type of lockout is usually due to low gas line pressure.
After one hour of continuous thermostat demand for heat,
the Watchguard will break and remake thermostat demand
to the furnace and automatically reset the control to begin
the ignition sequence.
Flue And Chimney
1 − Check flue pipe, chimney and all connections for tightness and to make sure there is no blockage.
2 − Check unit for proper draft.
3 − Is pressure switch closed? Obstructed flue will cause
unit to shut off at pressure switch. Check flue and outlet
for blockages.
4 − Reset manual flame rollout switches on burner box.
Failure To Operate
If the unit fails to operate, check the following:
1 − Is the thermostat calling for heat?
2 − Are access panels securely in place?
3 − Is the main disconnect switch closed?
4 − Is there a blown fuse or tripped circuit breaker?
5 − Is the filter dirty or plugged? Dirty or plugged filters will
cause the limit control to shut the unit off.
6 − Is gas turned on at the meter?
7 − Is the manual main shut-off valve open?
8 − Is the internal manual shut-off valve open?
9 − Is the unit ignition system in lock out? If the unit locks
out again, call the service technician to inspect the unit
for blockages.
Heating Sequence of Operation
NOTE − The integrated control thermostat selection DIP
switch is factory−set in the TWO−STAGE" position.
Applications Using a Two−Stage Thermostat
A − Heating Sequence −− Control Thermostat Selection
DIP Switch in Two−Stage" Position (Factory Setting)
1 − On a call for heat, thermostat first−stage contacts close
sending a signal to the integrated control. The integrated control runs a self-diagnostic program and
checks high temperature limit switches for normally
closed contacts and pressure switches for normally
open contacts.The combustion air inducer is energized at low speed and the 120 VAC humidifier terminal is energized.
2 − Once the control receives a signal that the low pressure switch has closed, the combustion air inducer begins a 15−second pre−purge in low speed.
3 − After the pre−purge is complete, a 20−second initial ignitor warm−up period begins. The combustion air inducer continues to operate at low speed.
4 − After the 20−second warm−up period has ended, the
gas valve is energized on low fire (first stage) and ignition occurs. At the same time, the control module
sends a signal to begin an indoor blower 45−second
ON−delay. When the delay ends, the indoor blower
motor is energized on the low fire heating speed and
the 24V humidifier terminal is energized. The furnace
will continue this operation as long as the thermostat
has a first−stage heating demand.
5 − If second−stage heat is required, the thermostat second−stage heat contacts close and send a signal to the
integrated control. The integrated control initiates a
30−second second−stage recognition delay.
6 − At the end of the recognition delay, the integrated control energizes the combustion air inducer at high
speed. The control also checks the high fire (second
stage) pressure switch to make sure it is closed.The
high fire (second stage) gas valve is energized and the
indoor blower motor is energized for operation at the
high fire heating speed.
7 − When the demand for high fire (second stage) heat is
satisfied, thecombustion air inducer is switched to the
low−fire heating speed and the high−fire (second
stage) gas valve is de−energized. The low−fire (first
stage) gas valve continues operation. The indoor
blower motor is switched to the low−fire heating speed.
8 − When the thermostat demand for low−fire (first stage)
heat is satisfied, the gas valve is de−energized and the
field−selected indoor blower off delay begins. The
combustion air inducer begins a 5−second post−purge
period.
9 − When the combustion air post−purge period is complete, the inducer and humidifier terminals are de−energized. The indoor blower is de−energized at the end
of the off delay.
Applications Using A Single−Stage Thermostat
B − Heating Sequence −− Control Thermostat Selection
DIP Switch in Single−Stage" Position
NOTE − In these applications, two−stage heat will be initiated by the integrated control if heating demand has not
been satisfied after the field adjustable period (10 or 15
minutes).
1 − On a call for heat, thermostat first−stage contacts close
sending a signal to the integrated control. The integrated control runs a self-diagnostic program and
checks high temperature limit switches for normally
closed contacts and pressure switches for normally
open contacts.The combustion air inducer is energized at low speed and the 120 VAC humidifier terminal is energized.
2 − Once the control receives a signal that the low pressure switch has closed, the combustion air inducer begins a 15−second pre−purge in low speed.
3 − After the pre−purge is complete, a 20−second initial ignitor warm−up period begins. The combustion air inducer continues to operate at low speed.
Page 33
4 − After the 20−second warm−up period has ended, the
gas valve is energized on low fire (first stage) and ignition occurs. At the same time, the control module
sends a signal to begin an indoor blower 45−second
ON−delay. When the delay ends, the indoor blower
motor is energized on the low fire heating speed and
the 24V humidifier terminal is energized. The integrated control also initiates a second−stage on delay
(factory−set at 10 minutes; adjustable to 15 minutes).
5 − If the heating demand continues beyond the second−
stage on delay, the integrated control energizes the
combustion air inducer at high speed. The control also
checks the high fire (second stage) pressure switch to
make sure it is closed.The high fire (second stage) gas
valve is energized and the indoor blower motor is energized for operation at the high fire heating speed.
6 − When the thermostat heating demand is satisfied, thecombustion air inducer begins a 5−second low speed
post−purge. The field−selected indoor blower off delay
begins. The indoor blower operates at the low−fire
heating speed.
7 − When the combustion air post−purge period is complete, the inducer and humidifier terminals are de−energized. The indoor blower is de−energized at the end
of the off delay.
Service
WARNING
Disconnect power before servicing unit.
CAUTION
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.
At the beginning of each heating season, a licensed professional technician (or equivalent) should check the system
as follows:
Blower
Check the blower wheel for debris and clean if necessary.
The blower motors are prelubricated for extended bearing
life. No further lubrication is needed.
WARNING
The blower access panel must be securely in place
when the blower and burners are operating. Gas
fumes, which could contain carbon monoxide, can
be drawn into living space resulting in personal injury or death.
Filters
All G60DFV(X) filters are installed external to the unit. Filters should be inspected monthly. Clean or replace the filters when necessary to ensure that the furnace operates
properly. Replacement filters must be rated for high velocity airflow. Table 3 lists recommended filter sizes.
Flue And Chimney
Check the flue pipe, chimney and all connections for tightness and to make sure there is no blockage.
Electrical
1 − Check all wiring for loose connections.
2 − Check for the correct voltage at the furnace (furnace
operating).
3 − Check amp−draw on the blower motor.
Motor Nameplate__________Actual__________
Cleaning the Heat Exchanger and Burners
NOTE − Use papers or protective covering in front of the furnace during cleaning.
Cleaning the heat exchanger requires a steel spring
snake," a reversible drill and a vacuum cleaner. The steel
spring snake may be constructed by purchasing a 4 ft. long
by 1/4 inch diameter steel wire cable and a 1/4 inch diameter wire brush. These items are available at a hardware
store. Insert wire end of brush into the open end of the
spring cable. Crimp the cable around the brush so that the
brush is secured and will not come off during cleaning. Attach the other end of the cable to the reversible drill to complete the tool for cleaning the heat exchanger.
1 − Turn off both electrical and gas power supplies to furnace.
2 − Remove flue pipe and top cap from the unit. Label the
pressure switch wires, then disconnect them.
3 − Remove the four screws that secure the combustion
air inducer. Carefully remove the combustion air inducer to avoid damaging blower gasket. If gasket is damaged, it must be replaced to prevent leakage. See figure 1.
4 − Remove the collector box located behind the combustion air inducer. Be careful with the collector box gasket. If the gasket is damaged, it must be replaced to
prevent leakage.
5 − Label the wires from gas valve and rollout switches,
then disconnect them.
6 − Remove the four screws securing the burner box cover
and remove the cover.
7 − Disconnect gas supply piping. Remove six screws securing the burner box / manifold assembly to the vestibule panel and remove the assembly from the unit.
Take care not to damage the gasket.
8 − NOx units only − Remove the three screws that attach
the NOx insert to the corbel at the entrance to each
heat exchanger section. Carefully remove the NOx insert from each section. See figure 23.
9 − Insert the brush end of cable snake into the top of one
of the heat exchanger openings. Do not force the
cable into the heat exchanger. Insert the cable and
operate the drill on slow speed. Move the cable in and
out of the heat exchanger section three or four times or
until sufficient cleaning is accomplished. Reverse drill
and slowly work the cable out of opening.
Page 34
12 −Remove the cable from the heat exchanger. Use a vacuum cleaner to remove debris knocked loose during
cleaning.
13 −Attach the exhaust end (positive pressure) of the vacuum cleaner to the top of the heat exchanger section.
Any loose debris will be forced to the bottom of the heat
exchanger section. Vacuum debris from bottom openings.
G60DFV(X) COMBUSTION AIR INDUCER,
BURNER BOX & HEAT EXCHANGER REMOVAL
Heat Exchanger
14 −Replace collector box and combustion air inducer.
Check gaskets for damage. Damaged gaskets must
be replaced to avoid heat exchanger leaks. Replace all
screws to the collector box and combustion air inducer.
Failure to replace all screws may cause leaks.
Combustion Air
Inducer
Burner Box Assembly
15 −To clean the burner, run a vacuum cleaner with a soft
brush attachment over the face of burners. Visually inspect inside the burners and crossovers for any blockage caused by foreign matter. Remove any blockage.
16 −NOx units only − Reattach the NOx inserts to the corbels at the entrance to each heat exchanger opening.
See figure 23.
17 −Re−install gasket and burner box / manifold assembly
onto the vestibule panel. Replace burner box cover
and re−secure using screws.
NOTE − Gasket must be replaced if it was damaged
during disassembly.
FIGURE 22
NOx INSERTS
(X models only)
18 −Reconnect wires to pressure switch, roll−out switches,
gas valve and combustion air inducer. Refer to unit wiring diagram.
19 −Re−install top cap and re−secure vent pipe to combustion air inducer outlet.
20 −Reconnect gas supply piping.
21 −Turn on power and gas supply to unit.
22 −Set thermostat and check for proper operation.
23 −Check all piping connections, factory and field, for gas
leaks. Use a leak detecting solution or other preferred
means.
CAUTION
NOx INSERT
Some soaps used for leak detection are corrosive to
certain metals. Carefully rinse piping thoroughly after leak test has been completed. Do not use
matches, candles, flame or other sources of ignition
to check for gas leaks.
FIGURE 23
10 −Repeat procedure for each heat exchanger section.
11 −After each of the top heat exchanger sections has been
cleaned, insert the brush end of the cable snake into
the bottom openings of each of the heat exchanger
sections and clean as described in step 8.
24 −If a leak is detected, shut gas and electricity off and repair leak.
25 −Repeat steps 23 and 24 until no leaks are detected.
26 −Replace front access panel.
Page 35
Planned Service
The following items should be checked during an annual inspection. Power to the unit must be shut off for the service
technician’s safety.
Fresh air grilles and louvers (on the unit and in the room
where the furnace is installed) − Must be open and unobstructed to provide combustion air.
Burners − Must be inspected for rust, dirt, or signs of water.
Vent pipe − Must be inspected for signs of water, damaged
or sagging pipe, or disconnected joints.
Unit appearance − Must be inspected for rust, dirt, signs
of water, burnt or damaged wires, or components.
Blower access door − Must be properly in place and provide a seal between the return air and the room where the
furnace is installed.
Return air duct − Must be properly attached and provide
an air seal to the unit.
Operating performance − Unit must be observed during
operation to monitor proper performance of the unit and the
vent system.
Combustion gases − Flue products must be analyzed and
compared to the unit specifications.
Problems detected during the inspection may make it necessary to temporarily shut down the furnace until the items
can be repaired or replaced.
Pay attention to your furnace. Situations can arise between annual furnace inspections that may result in unsafe
operation.
Repair Parts List
The following repair parts are available through independent Lennox dealers. When ordering parts, include the complete
furnace model number listed on the CSA International nameplate −− Example: G60DFV(X)−36A−070−7.
Heating Parts
Cabinet Parts
Upper access panel
Flame Sensor
Blower panel
Heat exchanger assembly
Top cap
Gas manifold
Control Panel Parts
Two−speed combustion air inducer
Transformer
Two−stage gas valve
Two−stage, variable speed integrated control
Main burner cluster
Door interlock switch
Main burner orifices
Circuit breaker
Pressure switch
Blower Parts
Ignitor
Blower wheel
Primary limit control
Blower housing
Flame rollout switch
Motor
Secondary limit
Motor electronics
Power choke (1 hp only)
Motor mounting frame
Motor capacitor
Blower housing cutoff plate
Page 36
Integrated Control Diagnostic Codes
FLASH CODE
(X + Y)
STATUS / ERROR DESCRIPTION
FLASH CODE DESCRIPTIONS
Pulse
A 1/4 second flash followed by four seconds of off time.
Heartbeat
Constant 1/2 second bright and 1/2 second dim cycles.
X+Y
LED flashes X times at 2Hz, remains off for two seconds, flashes Y times at 2Hz, remains off for four
seconds, then repeats.
Pulse
Power on − Standby.
Heartbeat
Normal operation − signaled when heating demand initiated at thermostat.
FLAME CODES
1+2
Low flame current −− run mode.
1+3
Flame sensed out of sequence −− flame still present.
2+3
Low pressure switch failed open.
2+4
Low pressure switch failed closed.
2+5
High pressure switch failed open.
2+6
High pressure switch failed closed.
2+7
Low pressure switch opened during ignition trial or heating demand.
PRESSURE SWITCH CODES
LIMIT CODE
3+1
Limit switch open.
4+1
Watchguard −− Exceeded maximum number of retries.
4+2
Watchguard −− Exceeded maximum number of retries or last retry was due to pressure switch opening.
4+3
Watchguard −− Exceeded maximum number of retries or last retry was due to flame failure.
4+5
Watchguard −− Limit remained open longer than three minutes.
4+6
Watchguard −− Flame sensed out of sequence; flame signal gone.
4+7
Ignitor circuit fault −− Failed ignitor or triggering circuitry.
4+8
Low line voltage.
WATCHGUARD CODES
HARD LOCKOUT CODES
5+1
Hard lockout −− Rollout circuit open or previously opened.
5+2
Control failed self check, internal error (control will restart if error recovers).
5+3
No Earth ground (control will restart if error recovers).
5+4
Reversed line voltage polarity (control will restart if the error recovers).
5+6
Low secondary (24VAC) voltage.
Page 37
Troubleshooting: Heating Sequence of Operation
HEATING SEQUENCE OF OPERATION
NORMAL AND ABNORMAL HEATING MODE
POWER ON
CONTROL SELF−CHECK OKAY?
POLARITY OKAY?
NO
GAS VALVE OFF. COMBUSTION AIR INDUCER OFF.
INDOOR BLOWER OFF. (RESET CONTROL BY
TURNING MAIN POWER OFF.)
POLARITY REVERSED.
STATUS ERROR CODE 5 + 4.
NO
YES
IS THERE A
PROPER GROUND?
NO
SIGNAL HOLDS UNTIL UNIT IS PROPERLY GROUNDED.
STATUS ERROR CODE 5 + 3.
YES
A
NORMAL OPERATION:
STATUS LED −− PULSE
NO
COMBUSTION AIR INDUCER OFF.
INDOOR BLOWER ON. HAS PRIMARY OR
SECONDARY LIMIT RESET WITHIN 3 MINUTES? YES
STATUS ERROR CODE 3 + 1.
B
THERMOSTAT CALLS FOR HEAT:
STATUS LED −− HEARTBEAT
NO
NO
60−MINUTE LIMIT WATCHGUARD MODE.
GAS VALVE OFF, COMBUSTION AIR
INDUCER OFF, INDOOR BLOWER OFF WITH
DELAY.
STATUS ERROR CODE 4 + 5.
YES
PRIMARY AND SECONDARY LIMIT
SWITCHES CLOSED?
YES
ROLLOUT SWITCH CLOSED?
NO
YES
FIRST (LOW) STAGE PRESSURE SWITCH
CONTACTS OPEN?
NO
YES
SECOND (HIGH) STAGE PRESSURE SWITCH
CONTACTS OPEN?
NO
GAS VALVE OFF. COMBUSTION AIR INDUCER ON.
NO
INDOOR BLOWER ON.
STATUS ERROR CODE 5 + 1.
SEQUENCE HOLDS UNTIL ROLLOUT SWITCH IS YES
RESET AND MAIN POWER IS INTERRUPTED OR
T’STAT IS CYCLED OFF/ON FOR 3 SEC. MINIMUM.
GAS VALVE OFF. COMBUSTION AIR INDUCER OFF.
INDOOR BLOWER OFF. CONTROL REMAINS UNTIL
PRESSURE SWITCH IS DETECTED OPEN.
STATUS ERROR CODE 2 + 4
YES
TWO−STAGE OR SINGLE−STAGE THERMOSTAT
CALL FOR HEAT
COMBUSTION AIR INDUCER ON LOW SPEED.
STATUS LED −− HEARTBEAT
GAS VALVE OFF.
COMBUSTION AIR INDUCER OFF.
INDOOR BLOWER OFF.
CONTROL WILL NOT ATTEMPT SECOND−STAGE
OPERATION DURING THIS HEAT DEMAND.
FIRST−STAGE OPERATION WILL BE ATTEMPTED.
STATUS ERROR CODE 2 + 6.
CONTINUED ON NEXT PAGE
Page 38
Troubleshooting: Heating Sequence of Operation (Continued)
HEATING SEQUENCE OF OPERATION
CONTINUED
THERMOSTAT CALLS FOR HEAT
STATUS LED − HEARTBEAT.
(Refer to box A on previous page)
NO
FIRST−STAGE (LOW FIRE) PRESSURE
SWITCH CLOSED WITHIN 2.5 MINUTES?
YES
GAS VALVE OFF. COMBUSTION AIR INDUCER
OFF. INDOOR BLOWER OFF. UNIT WILL RETRY
AFTER 5−MINUTE WAIT PERIOD.
STATUS ERROR CODE 2 + 3.
15−SECOND COMBUSTION AIR INDUCER
PRE−PURGE INITIATED BY CLOSED
FIRST−STAGE PRESSURE SWITCH (or 15
SECOND INTER−PURGE PERIOD.)
STATUS LED −− HEARTBEAT.
IGNITOR WARM−UP (20 SECONDS)
STATUS LED −− HEARTBEAT.
YES
COMBUSTION AIR INDUCER OFF, IGNITOR
OFF.
SIGNAL HOLDS UNTIL IGNITOR IS REPLACED
OR RECONNECTED.
STATUS ERROR CODE 4 + 7.
NO
IS IGNITOR INTACT AND CONNECTED?
YES
AT END OF IGNITOR 20 SECOND WARM UP
PERIOD, 4−SECOND TRIAL FOR IGNITION.
GAS VALVE OPENS, IGNITOR ENERGIZED DURING
4−SECOND TRIAL UNTIL FLAME SENSED.
IS VOLTAGE ABOVE 90 VOLTS?
YES
NO
YES
4−SECOND FLAME STABILIZATION PERIOD.
NO
FLAME RECTIFICATION CURRENT CHECK
CAN FLAME BE PROVEN WITHIN 4
SECONDS AFTER GAS VALVE OPENS?
(u0.20 microamps)
COMBUSTION AIR INDUCER OFF, IGNITER OFF.
SIGNAL HOLDS UNTIL VOLTAGE RISES ABOVE 95
VOLTS. STATUS ERROR CODE 4 + 8.
GAS VALVE OFF. COMBUSTION AIR
INDUCER ON. INDOOR BLOWER OFF.
STATUS LED −− HEARTBEAT.
HAS CONTROL FAILED TO SENSE
FLAME FOR FIVE CONSECUTIVE TRIES
DURING A SINGLE HEAT DEMAND?
NO
YES
WATCHGUARD MODE. GAS VALVE OFF,
COMBUSTION AIR INDUCER OFF.
INDOOR BLOWER OFF.
STATUS ERROR CODE 4 + 1.
IS 60−MINUTE RESET PERIOD COMPLETE?
YES
YES
FLAME PRESENT?
YES
CONTINUED ON NEXT PAGE
NO
HAS CONTROL RESET IGNITION SEQUENCE
FOUR (4) TIMES?
WATCHGUARD MODE.
STATUS ERROR CODE 4 + 3.
Page 39
NO
Troubleshooting: Heating Sequence of Operation (Continued)
HEATING SEQUENCE OF OPERATION
CONTINUED
THERMOSTAT CALLS FOR HEAT.
STATUS LED −− HEARTBEAT.
SEE BOX A.
FLAME SIGNAL ABOVE
(u1.40 microamps)
NO
LOW FLAME SIGNAL
(Does not affect control operation)
STATUS ERROR CODE 1 + 2.
YES
YES
SINGLE−STAGE THERMOSTAT MODE
(DIP SWITCH SET AT SINGLE")
TWO STAGE THERMOSTAT MODE
(DIP SWITCH SET AT TWO")
YES
YES
START SECOND−STAGE RECOGNITION
ON DELAY (10 OR 15 MINUTES).
STATUS LED −− HEARTBEAT
45−SECOND INDOOR BLOWER ON DELAY BEGINS.
STATUS LED −− HEARTBEAT.
YES
YES
ROLLOUT SWITCHES CLOSED?
NO
NO
YES
YES
FIRST−STAGE (LOW FIRE)
PRESSURE SWITCH CLOSED?
YES
PRIMARY & SECONDARY LIMIT SWITCHES
CLOSED?
NO
NO
GAS VALVE OFF. COMBUSTION AIR INDUCER ON.
INDOOR BLOWER ON.
STATUS ERROR CODE 5 + 1. SEQUENCE HOLDS
UNTIL ROLLOUT SWITCH IS RESET AND MAIN
POWER IS INTERRUPTED OR THERMOSTAT
IS CYCLED OFF/ON FOR 3 SECOND MINIMUM.
GAS VALVE OFF, COMBUSTION AIR INDUCER
OFF, INDOOR BLOWER ON.
STATUS ERROR CODE 3 + 1.
FIRST−STAGE HEAT DEMAND SATISFIED?
YES
HAS PRIMARY OR SECONDARY LIMIT
SWITCH CLOSED WITHIN 3 MINUTES?
(Indoor blower on low speed during 3−minute period)
GAS VALVE OFF, COMBUSTION AIR INDUCER
OFF FOLLOWING POST PURGE.
INDOOR BLOWER OFF WITH DELAY
STATUS LED −− PULSE
NO
LIMIT SWITCH WATCHGUARD MODE.
GAS VALVE OFF, COMBUSTION AIR INDUCER OFF,
INDOOR BLOWER OFF WITH DELAY.
YES
STATUS ERROR CODE 4 + 5
IS 60−MINUTE RESET PERIOD COMPLETE?
SECOND−STAGE HEAT DEMAND.
SECOND−STAGE HEAT DEMAND REQUIRED?
YES
SECOND STAGE PRESSURE SWITCH CLOSED?
ABNORMAL FLASH CODE.
NOTE − IF SECOND−STAGE PRESSURE SWITCH
WAS ORIGINALLY FOUND CLOSED,
ABNORMAL CODE WILL FLASH.
YES
NO
GAS VALVE OFF. COMBUSTION AIR INDUCER ON.
INDOOR BLOWER OFF AFTER DELAY.
STATUS ERROR CODE 2 + 3. CONTROL RESTARTS YES
IGNITION SEQUENCE IF PRESSURE SWITCH
CLOSES WITHIN 2−1/2 MINUTES.
SECOND−STAGE PRESSURE SWITCH CLOSED
AT BEGINNING OF HEAT DEMAND?
STATUS ERROR CODE 2 + 6.
SECOND−STAGE 30−SECOND DELAY ON BEGINS.
STATUS LED −− HEARTBEAT.
YES
SECOND−STAGE COMBUSTION AIR INDUCER
ON. SECOND−STAGE GAS VALVE ON. HIGH
HEAT INDOOR BLOWER SPEED ON.
STATUS LED −− HEARTBEAT.
YES
SECOND−STAGE PRESSURE SWITCH CLOSED
IN LESS THAN TEN (10) SECONDS?
STATUS LED −− HEARTBEAT
YES
NO
SECOND STAGE HEAT DEMAND
STATUS LED −− HEARTBEAT.
NO
RETURNS TO FIRST−STAGE HEAT MODE WHICH
CONTINUES UNTIL SECOND−STAGE PRESSURE
SWITCH CAN BE PROVEN or HEAT DEMAND IS
SATISFIED. FIVE (5) MINUTE WAIT PERIOD
INITIATED BEFORE RETRY. WERE 5 ATTEMPTS
MADE FOR SECOND−STAGE HEAT?
YES
CONTINUES FIRST−STAGE HEATING
DEMAND. WILL NOT REATTEMPT
SECOND−STAGE HEATING DEMAND.
STATUS ERROR CODE 2 + 5.
YES
CONTINUED ON NEXT PAGE
Page 40
NO
Troubleshooting: Heating Sequence of Operation (Continued)
HEATING SEQUENCE OF OPERATION
CONTINUED
SEE BOX A
NORMAL OPERATION.
SEE BOX B
THERMOSTAT CALLS FOR HEAT.
SECOND−STAGE (HIGH FIRE) HEAT
PRESSURE SWITCH CLOSED?
RETURN TO FIRST−STAGE HEAT MODE.
FIRST−STAGE CONTINUES UNTIL SECOND−
STAGE PRESSURE SWITCH CAN BE PROVEN
or HEAT DEMAND IS SATISFIED. A FIVE (5)
MINUTE WAIT PERIOD IS INITIATED BEFORE
RETRY. WERE 5 ATTEMPTS MADE FOR
SECOND−STAGE HEAT?
NO
SEE BOX C
FIRST−STAGE HEAT DEMAND SATISFIED?
NO
YES
HEAT DEMAND SATISFIED?
STATUS LED −− HEARTBEAT.
YES
YES
SINGLE−STAGE THERMOSTAT MODE
(DIP SWITCH SET AT SINGLE")
TWO STAGE THERMOSTAT MODE?
(DIP SWITCH SET AT TWO")
YES
YES
GAS VALVE OFF, COMBUSTION AIR
INDUCER OFF AFTER 5−SECOND
LOW SPEED POST PURGE PERIOD,
INDOOR BLOWER OFF DELAY
INITIATED ON LOW HEAT SPEED.
STATUS LED −− HEARTBEAT.
YES
YES
FIRST AND SECOND STAGE HEAT
DEMAND SATISFIED SIMULTANEOUSLY.
STATUS LED −− HEARTBEAT.
NO
SECOND STAGE HEAT
DEMAND SASTISFIED?
STATUS LED −− HEARTBEAT.
YES
GAS VALVE, COMBUSTION AIR INDUCER
AND INDOOR BLOWER RETURN TO FIRST−
STAGE OPERATION.
STATUS LED −− HEARTBEAT.
FIRST STAGE HEAT DEMAND SATISFIED?
YES
GAS VALVE OFF. COMBUSTION AIR INDUCER
OFF AFTER 5−SECOND LOW SPEED POST−
PURGE PERIOD. INDOOR BLOWER OFF.
DELAY INITIATED ON LOW HEAT SPEED.
STATUS LED −− PULSE.
DEMAND FOR HEAT SATISFIED.
POWER ON STAND BY.
STATUS LED −− PULSE.
Page 41
Troubleshooting: Cooling Sequence of Operation
COOLING SEQUENCE OF OPERATION
POWER ON
YES
IS POLARITY REVERSED?
SIGNAL POLARITY REVERSED.
CONTROL WILL CONTINUE TO CALL FOR COOLING
IN THIS CONDITION.
STATUS ERROR CODE 5 + 4.
NO
IS THERE
PROPER GROUND?
SIGNAL IMPROPER GROUND AT LED.
CONTROL WILL CONTINUE TO CALL FOR COOLING
IN THIS CONDITION.
STATUS ERROR CODE 5 + 3.
NO
YES
THERMOSTAT CALLS FOR FIRST−STAGE COOL.
COMPRESSOR AND CONDENSER FAN
ENERGIZED.
INDOOR BLOWER ENERGIZED ON FIRST STAGE
COOL SPEED AFTER 2 SECOND DELAY.
FIRST−STAGE DEMAND FOR COOL SATISFIED?
YES
COMPRESSOR AND CONDENSER FAN DE−ENERGIZED.
INDOOR BLOWER DE−ENEGIZED.
NO
THERMOSTAT CALLS FOR SECOND−STAGE COOL.
INDOOR BLOWER RAMPS UP TO SECOND−STAGE COOL SPEED.
SECOND−STAGE DEMAND FOR COOL SATISFIED?
YES
UNIT RETURNS TO FIRST STAGE COOL
Page 42
Troubleshooting: Continuous Fan Sequence of Operation
CONTINUOUS LOW SPEED FAN SEQUENCE OF OPERATION
MANUAL FAN SELECTION MADE AT THERMOSTAT.
AFTER 2 SECOND DELAY, INDOOR BLOWER IS
ENERGIZED ON CONTINUOUS FAN SPEED.
YES
YES
THERMOSTAT CALLS FOR FIRST STAGE COOL.
THERMOSTAT CALLS FOR FIRST−STAGE HEAT.
YES
YES
AFTER 45−SECOND DELAY, INDOOR BLOWER
SWITCHES TO LOW HEAT SPEED.
INDOOR BLOWER RAMPS TO FIRST STAGE
COOLING SPEED AFTER A 2−SECOND DELAY.
YES
FIRST−STAGE HEAT DEMAND SATISFIED.
FIRST−STAGE COOL DEMAND SATISFIED?
NO
NO
SECOND STAGE COOL DEMAND
THERMOSTAT CALLS FOR SECOND−STAGE HEAT.
YES
INDOOR BLOWER RAMPS TO SECOND
STAGE COOL SPEED
INDOOR BLOWER SWITCHES TO HIGH HEAT SPEED
AFTER 30−SECOND RECOGNITION PERIOD.
SECOND STAGE COOL DEMAND SATISFIED?
SECOND−STAGE HEAT DEMAND SATISFIED.
YES
YES
YES
INDOOR BLOWER RAMPS DOWN TO FIRST STAGE
COOL SPEED.
INDOOR BLOWER RAMPS DOWN TO LOW
HEAT SPEED.
Page 43
YES
G60DFV(X) Start−Up & Performance Check List
Job Name
Job No.
Date
Job Location
City
State
Installer
City
State
Unit Model No.
Technician
Serial No.
Heating Section
Electrical Connections Tight?
Line Voltage
Blower Motor H.P.
Blower Motor Amps
Gas Piping Connections
Tight & Leak−Tested?
Fuel Type: Natural Gas?
LP/Propane Gas?
Furnace Btu Input (High fire)
Line Pressure
Low Fire Manifold Pressure
w.c. − Nat.:
w.c. − LP/Propane
High Fire Manifold Pressure
w.c. − Nat.:
w.c. − LP/Propane
Flue Connections Tight?
Combustion Gas Tested (high fire and low fire)?
Blower ON delay confirmed?
(45 Seconds Fixed On)
Proper Draft?
CO2
CO
External Static Pressure?
(0.8 maximum)
Temperature Rise
Blower OFF Delay Setting (60, 90, 120 or 180)?
Filter Clean & Secure?
Thermostat
Heat Anticipator Setting?
Thermostat Level?
Page 44