508187-01
Issue 2116
Page 35 of 51
Maintenance
ELECTRICAL SHOCK, FIRE,
OR EXPLOSION HAZARD.
Failure to follow safety warnings exactly could result in
dangerous operation, serious injury, death or property
damage.
Improper servicing could result in dangerous operation,
serious injury, death, or property damage.
Before servicing, disconnect all electrical power to
furnace.
When servicing controls, label all wires prior to
disconnecting. Take care to reconnect wires correctly.
Verify proper operation after servicing.
WARNING
At the beginning of each heating season, system should
be checked as follows by a qualified service technician:
Blower
Check the blower wheel for debris and clean if necessary.
The blower motors are prelubricated for extended bearing
life. No further lubrication is needed.
The blower access panel must be securely in place
when the blower and burners are operating. Gas fumes,
which could contain carbon monoxide, can be drawn
into living space resulting in personal injury or death.
WARNING
Filters
All air filters are installed external to the unit. Filters should
be inspected monthly. Clean or replace the filters when
necessary to ensure proper furnace operation. Table 15
lists recommended filter sizes.
If a high-efficiency filter is being installed as part of this
system to ensure better indoor air quality, the filter must
be properly sized. High-efficiency filters have a higher
static pressure drop than standard-efficiency glass/foam
filters. If the pressure drop is too great, system capacity
and performance may be reduced. The pressure drop
may also cause the limit to trip more frequently during
the winter and the indoor coil to freeze in the summer,
resulting in an increase in the number of service calls.
Before using any filter with this system, check the
specifications provided by the filter manufacturer
IMPORTANT
Cabinet Width
Filter Size
Side Return
Bottom Return
14-1/2”
16 x 25 x 1
14 x 25 x 1
17-1/2”
16 x 25 x 1
21”
20 x 25 x 1
Table 15.
Exhaust and Air Intake Pipes
Check the exhaust and air intake pipes and all connections
for tightness and to make sure there is no blockage.
NOTE:
After any heavy snow, ice or frozen fog event the
furnace vent pipes may become restricted. Always check
the vent system and remove any snow or ice that may be
obstructing the plastic intake or exhaust pipes.
Annual Furnace Maintenance
At the beginning of each heating season, and to comply
with the Allied Air Limited Warranty, your system should
be checked by a licensed professional technician (or
equivalent) as follows:
Disconnect power before servicing unit.
WARNING
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after
servicing.
CAUTION
The blower access panel must be securely in place
when the blower and burners are operating. Gas fumes,
which could contain carbon monoxide, can be drawn
into living space resulting in personal injury or death.
WARNING
1.
Check wiring for loose connections, voltage at indoor
unit and amperage of indoor motor.
2. Check the condition of the belt and shaft bearings if
applicable.
3.
Inspect all gas pipe and connections for leaks.
4.
Check the cleanliness of filters and change if necessary
(monthly).
5.
Check the condition and cleanliness of burners and
heat exchanger and clean if necessary.
