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G60DF Series
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 inju-
ry or death.
Filters
This unit is not equipped with a filter or rack. A field−pro-
vided 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"
14 X 25 X 1 (1)
17−1/2"
16 X 25 X 1 (1)
21"
20 X 25 X 1 (1)
Duct System
Use industry-approved standards (such as those pub-
lished by Air Conditioning Contractors of America or Ameri-
can 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 0.5 inches w.c. Higher external stat-
ic 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.
Return Air Plenum
NOTE −
Return air must not be drawn from a room
where this furnace, or any other gas−fueled appliance
(i.e., water heater), or carbon monoxide−producing de-
vice (i.e., wood fireplace) 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 re-
verse flow of the flue gas may result in incomplete combus-
tion 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 insula-
tion.
The G60DF(X) series units are classified as fan−assisted
Category I furnaces when vertically vented according to
the latest edition of National Fuel Gas Code (ANSI
Z223.1/NFPA 54) in the USA and the current standards of
the CSA B149 Natural Gas and Propane Installation Codes
in Canada. A fan−assisted Category I furnace is an ap-
pliance equipped with an integral mechanical means to ei-
ther draw or force combustion products through the com-
bustion chamber and/or heat exchanger.
NOTE − Use these instructions as a guide. They do not su-
persede local codes. This furnace must be vented accord-
ing 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 (ANSI Z223.1/NFPA 54) and are
provided as a guide for proper vent installation. Proper ap-
plication, termination, construction and location of vents
must conform to local codes having jurisdiction. In the ab-
sence of local codes, the NFGC serves as the defining doc-
ument.
Refer to the tables and the venting information contained in
these instructions to properly size and install the venting
system.
IMPORTANT
Once the venting system is installed, attach the Dis-
connected 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 fur-
nace must be securely connected to the furnace flue
transition at all times.
Use self−drilling sheet metal screws or a mechanical fas-
tener 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.
FLUE TRANSITION
COLLAR
VENT CONNECTION
VENT
PIPE
FURNACE
FIGURE 10
Install the first vent connector elbow at a minimum of six
inches (152 mm) from the furnace vent outlet.
