32
CARE AND MAINTENANCE
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Never store anything on, near, or in contact with the
furnace, such as:
1. Spray or aerosol cans, rags, brooms, dust mops,
vacuum cleaners, or other cleaning tools.
2. Soap powders, bleaches, waxes or other cleaning
compounds, plastic or plastic containers, gasoline,
kerosene, cigarette lighter fluid, dry cleaning fluids,
or other volatile fluids.
3. Paint thinners and other painting compounds, paper
bags, or other paper products.
!
WARNING
For continuing high performance and to minimize possible
equipment failure, periodic maintenance must be performed on
this equipment. Consult your local dealer about proper frequency
of maintenance and the availability of a maintenance contract.
ELECTRICAL SHOCK AND FIRE HAZARD
Failure to follow this warning could result in personal
injury, death or property damage.
Turn off the gas and electrical supplies to the unit and
install lockout tag before performing any maintenance
or service. Follow the operating instructions on the label
attached to the furnace.
!
WARNING
CARBON MONOXIDE POISONING AND
FIRE HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Never operate unit without a filter or with filter access door
removed.
!
WARNING
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care
and wear appropriate protective clothing, safety glasses and
gloves when handling parts and servicing furnaces.
CAUTION
!
The minimum maintenance on this furnace is as follows:
1. Check and clean/replace air filter each month or more fre-
quently if required. Replace if torn.
2. Check burner inlet elbow opening for cleanliness and any
visible debris. Burner assembly removal should only be
performed for troubleshooting and diagnosis of opera-
tional issues. Refer to troubleshooting and service guide.
3. Check blower motor and wheel for cleanliness each
heating and cooling season. Clean as necessary.
4. Check electrical connections for tightness and controls for
proper operation each heating season. Service as
necessary.
5. Inspect the vent pipe/vent system before each heating
season for rust, corrosion, water leakage, sagging pipes or
broken fittings. Have vent pipes/vent system serviced by a
qualified service agency.
6. Inspect any accessories attached to the furnace such as a
humidifier or electronic air cleaner. Perform any service or
maintenance to the accessories as recommended in the
accessory instructions.
CLEANING AND/OR REPLACING AIR FILTER
The air filter arrangement will vary depending on the application.
The filter is exterior to the furnace casing.
NOTE
: If the filter has an airflow direction arrow, the arrow
must point towards the blower.
Table 16 – Filter Size Information (In. / mm)
FURNACE
CASING
WIDTH
In. (mm)
FILTER SIZE (In. / mm)
FILTER TYPE
Side Return
Bottom Return
17---1/2
(445)
16 X 25 X 3/4
(406 x 635 x 19)
16 X 25 X 3/4
(406 x 635 x 19)
Washable*
21 (533)
16 x 25 x 3/4
(406 x 635 x 19)
20 X 25 X 3/4
(508 x 635 x 19)
Washable*
* Recommended
Media cabinet filter procedures :
1. Turn off electrical supply to furnace before removing filter
access door.
2. Remove filter cabinet door.
3. Slide filter out of cabinet.
4. If equipped with permanent, washable 3/4--in. (19 mm) fil-
ter, clean filter by spraying cold tap water through filter in
opposite direction of airflow. Rinse filter and let dry. Oil-
ing or coating of the filter is not recommended. See Table
16 for size information.
5. If equipped with factory--specified disposable media filter,
replace only with media filter having the same part num-
ber and size. For expandable replacement media, refer to
the instructions included with the replacement media.
6. Slide filter into cabinet.
7. Replace filter cabinet door.
8. Turn on electrical supply to furnace.
BLOWER MOTOR AND WHEEL
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Blower access door switch opens 115--v power to control.
No component operation can occur unless switch is closed.
Caution must be taken when manually closing this switch
for service purposes.
!
WARNING
NOTE
: The blower wheel should not be dropped or bent as
balance will be affected. The following steps should be performed
by a qualified service agency.
