Filter
Top Products
7
20
For 58MTA and 58MVP
21
For 58MCA and 58MXA
22
6. Replace the main furnace door. (See Fig. 16.)
7. If the furnace is being shut down because of a malfunc-
tion, call your dealer as soon as possible.
PERFORMING ROUTINE
MAINTENANCE
NOTE:
The qualified installer or agency must use only
factory-authorized replacement parts, kits, and accessories
when modifying this product.
Installing and servicing heating equipment can be hazard-
ous due to gas and electrical components.
Only trained and qualified personnel should install, repair, or
service heating equipment. Untrained personnel can perform
basic maintenance functions such as cleaning and replacing
air filters.
All other operations must be performed by trained and qual-
ified service agency personnel. Observe safety precautions in
this manual, on tags, and on labels attached to the furnace,
and other safety precautions that may apply.
With proper maintenance and care, your furnace will operate
economically and dependably. Instructions for basic mainte-
nance are found on this and the following pages. However,
before beginning maintenance, follow these safety precautions:
FILTERING OUT TROUBLE
A dirty air filter will cause a loss of airflow in your duct
system. When excessive loss of airflow occurs, the furnace
may cycle on its safety controls. If this condition is left unat-
tended, the furnace will eventually lock out. It is recom-
mended that the furnace air filter be checked every 3 or 4
weeks and cleaned if necessary.
If installed with factory-specified disposable media filter,
check or replace filter before each heating and cooling sea-
son. Replace disposable media filter at least once a year.
The air filter is normally located in the blower compartment
(See Fig. 3 or 4.) or in the factory-supplied filter cabinet
attached to the side or bottom of the furnace casing. If air
filter has been installed in another location, contact your deal-
er for instructions. To inspect, clean, and/or replace the air
filter(s), follow these steps:
1. Turn off electrical supply to furnace. (See Fig. 20.)
2. Remove door/access panel
• AIR FILTERS(S) LOCATED IN BLOWER COMPART-
MENT
a. Remove main furnace door. (See Fig. 23.)
b. Remove blower access panel. (See Fig. 24.)
NOTE:
It will be necessary to remove 2 screws
• AIR FILTER LOCATED IN FILTER CABINET
CAUTION
Furnace is not to be installed, operated, and then
turned off and left turned off in an unoccupied
structure during winter. (See “Heading South for
the Winter” procedures in maintenance section on
page 9). Freeze damage to furnace would occur.
A04150
ON
OFF
or
!
WARNING
Turn off electrical power supply to your furnace
before removing the access doors to service or
perform maintenance. A failure to follow this
warning could result in personal injury/death or
property damage.
CAUTION
Although special care has been taken to minimize
sharp edges, be extremely careful when handling
parts or reaching into the furnace. Failure to follow
this caution would result in minor personal injury.
CAUTION
Never operate your furnace without a filter in place.
Doing so may damage the furnace blower motor.
An accumulation of dust and lint on internal parts
of your furnace can cause a loss of efficiency and
would cause minor property or product damage.
!
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