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Service
The unit should be inspected once a year by a qualified
service technician.
CAUTION
Label all wires prior to disconnection when servic
ing controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after
servicing.
WARNING
This product contains a chemical known to the
State of California to cause cancer, birth defects, or
other reproductive harm.
A-Filters
Units are equipped with four 20 X 25 X 2” filters. Filters
should be checked monthly and replaced when
necessary with filters of like kind and size. Take note of
air flow direction marking on filter frame when
reinstalling filters. See figure 22.
NOTE-Filters must be U.L.C. certified or equivalent for
use in Canada.
B-Lubrication
All motors are lubricated at the factory. No further
lubrication is required.
FIGURE 22
REMOVE FILTERS
PULL TO
REMOVE
FILTERS
C-Burners (Gas Units)
Periodically examine burner flames for proper
appearance during the heating season. Before each
heating season examine the burners for any deposits or
blockage which may have occurred.
Clean burners as follows:
1- Turn off both electrical power and gas supply to unit.
2- Remove burner compartment access panel.
3- Remove screws securing burners to burner support
and lift the individual burners or the entire burner
assembly from the orifices. See figure 23. Clean as
necessary.
4- Locate the ignitor under the left burners. Check
ignitor spark gap with appropriately sized twist drills
or feeler gauges. See figure 24.
BURNER BOX ASSEMBLY
FIGURE 23
GAS
VALV
E
GAS
MANIFOLD
BURNERS
FIGURE 24
IGNITOR
SPARK GAP
SHOULD BE 1/8”
(3mm)
