FIRE AND/OR EXPLOSION HAZARD
Failure to follow this warning could result in
property damage, personal injury, and/or death.
• TURN OFF GAS SUPPLY AND ELECTRICAL
POWER TO YOUR UNIT BEFORE SERVICING OR
PERFORMING MAINTENANCE.
• Do not turn off electrical power to this unit without first
turning off the gas supply.
• When removing access panels or performing
maintenance functions inside your unit, be aware of
Do NOT attempt to light the pilot or burner with a
match or flame of any kind.
ROUTINE MAINTENANCE
sharp sheet metal parts and screws. Although special
care is taken to reduce sharp edges to a minimum, be
extremely careful when handling parts or reaching
into the unit.
All routine maintenance should be handled by skilled,
experienced personnel. Your dealer can help you establish
a standard procedure.
For your safety, keep the unit area clear and free of
combustible materials, gasoline, and other flammable
liquids and vapors.
To assure proper functioning of the unit, flow of combustion
and ventilating air must not be obstructed from reaching the
unit. Clearance of at least 30 in. is required on all sides
except the duct side.
MAINTENANCE AND CARE FOR THE
EQUIPMENT OWNER
Before proceeding with those things you might want to
maintain yourself, please carefully consider the following:
TABLE 1 Filter Data
AIR FILTERS - Air filter(s) should be checked at least every
3 or 4 weeks and changed or cleaned whenever it becomes
dirty. Dirty filters produce excessive stress on the blower
motor and can cause the motor to overheat and shut down.
Table 1 indicates the correct filter size for your unit. Refer to
Fig. 5 to access the filter(s).
When installing the new filter(s), note the direction of the
airflow arrows on the filter frame.
If you have difficulty in locating your air filter(s), or if you
have questions concerning proper filter maintenance,
contact your dealer for instructions. When replacing filters,
always use the same size and type of filter that was supplied
originally by the installer. NEVER OPERATE THE UNIT
WITHOUT FILTERS IN PLACE. FAILURE TO OPERATE
WITHOUT FILTERS COULD RESULT IN DAMAGE TO
THE BLOWER MOTOR AND/OR COMPRESSOR,
Disposable Filters Washable Filters'
Nominal Size Minimum Area Nominal Size (_ Minimum Area
Model (qty x w x d) (sq. inches) x d) (inches) (sq. inches)
PGF324040K .... 1 x 20" x 20" 384 1 x 10" x 20" 192
PGF324060K .... 1 x 20" x 24" 480 1 x 12" x 20" 240
PGF330060K .... 1 x 20" x 24" 480 1 x 12" x 20" 240
PGF330080K .... 2 x 15" x 20" 576 1 x 15" x 20" 288
PGF336060K .... 2 x 15" x 20" 576 1 x 15" x 20" 288
PGF336080K .... 2 x 15" x 20" 576 1 x 15" x 20" 288
PGF336100K .... 2x 18" x 20" 720 1 x 18" x 20" 360
PGF342080K .... 2 x 18" x 20" 672 1 x 18" x 20" 336
PGF342100K .... 2x 18" x 20" 720 1 x 18" x 20" 360
PGF348080K .... 2 x 20" x 20" 768 1 x 20" x 20" 384
PGF348120K .... 2 x 20" x 20" 785 1 x 20" x 20" 393
PGF354100K .... 2 x 20" x 24" 960 1 x 20" x 24" 480
PGF354140K .... 2 x 24" x 24" 1008 1 x 24" x 24" 504
1 Washable filter size is based on an allowable face velocity of 600 ft/min. Refer to
filter manufacturer's specifications for allowable face velocity and required filter area.
HEAT EXCHANGER - To ensure dependable and efficient
heating operation, the heat exchanger should be checked
by a qualified maintenance person before each heating
season, and cleaned when necessary. This checkout
should not be attempted by anyone not having the required
expertise and equipment to properly do the job. Checking
and/or cleaning the heat exchanger involves removing the
gas controls assembly and the flue collector box cover and,
when completed, reinstalling the gas controls assembly for
141
proper operation. Also, the flue collector box cover must be
replaced correctly so that a proper seal is maintained.
Contact your dealer for the required periodic maintenance.
FANS AND FAN MOTOR - Periodically check the condition
of fan wheels and housings and fan-motor shaft bearings.
No lubrication of condenser- or evaporator-fan bearings or
motors is required or recommended.
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