3
recharges your body with static electricity (for example;
DO NOT move or shuffle your feet, DO NOT touch un-
grounded objects, etc.).
4. If you touch ungrounded objects (recharge your body with
static electricity), firmly touch furnace again before touch-
ing control or wires.
5. Use this procedure for installed and uninstalled (un-
grounded) furnaces.
6. Before removing a new control from its container, dis-
charge your body’s electrostatic charge to ground to pro-
tect the control from damage. If the control is to be
installed in a furnace, follow items 1 through 5 before
bringing the control or yourself into contact with the fur-
nace. Put all used AND new controls into containers be-
fore touching ungrounded objects.
7. An ESD service kit (available from commercial sources)
mayalsobeusedtopreventESDdamage.
CARE AND MAINTENANCE
For continuing high performance and to minimize possible
furnace failure, it is essential that maintenance be performed
annually. Consult your local dealer for maintenance and
maintenance contract availability.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Turn off the gas and electrical supplies to the unit before
performing any maintenance or service. Follow the
operating instructions on the label attached to the
furnace.
!
WARNING
The minimum maintenance that should be performed on this
equipment is as follows:
1. Check and clean or replace air filter each month as needed.
2. Check blower motor and wheel for cleanliness annually.
3. Check electrical connections for tightness and controls for
proper operation each heating season. Service as neces-
sary .
4. Check for proper condensate drainage. Clean as necessary .
5. Check for blockages in combustion--air and vent pipes
annually.
6. Check burners for cleanliness annually.
Step 1—Cleaning and/or Replacing Air Filter
The air filter arrangement may vary depending on the application
or orientation.
FIRE, CARBON MONOXIDE AND POISONING
HAZARD
Failure to follow this warning could result in personal
injury , death or property damage.
Never operate unit without a filter or with the blower
access panel removed. Operating a unit without a filter
or with the blower access door removed could cause
damage to the furnace blower motor. Dust and lint on
internal parts of furnace can cause a loss of efficiency.
!
WARNING
NOTE: If the filter has an airflow direction arrow, the arrow
must point toward the blower.
To clean or replace filters, proceed as follows:
If filter is installed in filter cabinet adjacent to furnace:
1. Turn off electrical supply to furnace.
2. Remove filter cabinet door.
3. Slide filter out of cabinet.
4. If equipped with permanent, washable filter, clean filter by
spraying cold tap water through filter in opposite direction
of airflow. Rinse filter and let dry. Oiling or coating of the
filter is not recommended.
5. If equipped with factory specified disposable media filter,
replace only with a factory specified media filter of the
same size.
6. Slide filter into cabinet.
7. Replace filter cabinet door.
8. Turn on electrical supply to furnace.
If filter is installed in furnace blower compartment:
1. Turn off electrical supply to furnace.
2. Remove main furnace door and blower access panel.
3. Release filter retainer wire. (See Fig. 3 or 4.)
WASHABLE
FILTER
FILTER
SUPPORT
FILTER
RETAINER
WASHABLE FILTER OR
DISPOSABLE MEDIA FILTER
IN FILTER CABINET
A00232
Fig. 3 --- Bottom Filter Arrangement
FILTER
RETAINER
WASHABLE
FILTER
IN FURNACE
WASHABLE FILTER OR
DISPOSABLE MEDIA
FILTER IN FILTER CABINET
A00233
Fig. 4 --- Filter Installed for Side Inlet
NOTE: Filters shown in Fig. 3 and 4 can be in furnace blower
compartment or in filter cabinet, but not in both.
4. Slide filter out of furnace.
58MVB
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