8
ROUTINE MAINTENANCE AND CARE
FOR THE EQUIPMENT OWNER
Before proceeding with those things you might want to maintain
yourself, please carefully consider the following:
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death, and/or property damage.
1.Turn off gas supply and electrical power to your unit before
servicing or performing maintenance.
2. Do not turn off electrical power to this unit without first
turning off gas supply.
3. When removing access doors or performing maintenance
functions inside your unit, be aware of sharp sheet metal
parts and screws. Although special care has been taken to
reduce sharp edges to a minimum, be extremely careful
when handling parts or reaching into the unit.
!
WARNING
Air Filter(s)
Air filters should be checked at least every 3 or 4 weeks and
changed or cleaned whenever they become dirty. T able 1 indicates
the correct filter size for your unit. Open the filter access panel to
replace or inspect the filters. All units have filter tracks into which
the filters slide. Remove the filters by pulling the filter slide
outward from the track. See Fig. 6 for filter access panel location.
Note the direction of flow arrows on the filter frame.
If you have difficulty in locating your air filter in the return--air
duct system, or if you have questions concerning proper filter
maintenance, contact your dealer for instructions. When replacing
your unit filters, always use the same size and type of filter that was
originally supplied by the installer.
Units with outdoor air capability have cleanable filters for the
outdoor air. These filters should be checked quarterly and cleaned
as necessary. Remove by pulling out the middle of the hood top.
Push up on the center filter and then remove. Slide the other filters
to the center and repeat.
FIRE AND EQUIPMENT DAMAGE HAZARD
Failure to follow this warning could result in personal injury,
death, and/or property damage.
Never operate unit without filters in place. Damage to blower
motor and/or compressors could result. An accumulation of
dust and lint on internal parts of your unit can cause loss of
efficiency and in some cases, fire.
!
WARNING
Table 1 – Indoor Air Filter Data
UNIT
48HG,HJ,
PG, PM
TYPE OF FILTER
QUANTITY...SIZE
(in.)
014- 024,
20-24
Standard Throwaway, Optional
30%, or Accessory 65% Pleated
9...16 x 25 x 2
28, 028
Standard Throwaway, Optional
30%, or Accessory 65% Pleated
9...20 x 25 x 2
PULL OUT CENTER OF
HOOD TO RELEASE OUTDOOR AIR
FILTER FROM TRACK
CONTROL BOX
ACCESS DOOR
INDOOR MOTOR
ACCESS DOOR
GAS VALVE
CONNECTION
FILTER
ACCESS
DOOR
HEAT
SECTION
ACCESS
PANEL
C07352
Fig. 6 -- Panel and Filter Locations
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 do the job properly. 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 proper
operation. The flue collector box cover must be replaced and sealed
correctly using high temperature “red” RTV. Contact your dealer
for the required periodic maintenance.
Fans and Belts
Check quarterly the condition of fan wheels and housings, and belt
tension. When service is necessary, call your dealer.
Evaporator, Condenser, and Combustion Fan
Motors
Lubrication is not recommended. Bearings will not require
lubrication for at least 5 years of normal operation. After 5 years,
motor life can be extended by having the motors serviced at an
authorized motor service shop.
(12 pages)
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