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WARNING
Disconnect electrical power before servicing
unit. Failure to do so could result in electrical
shock or death.
ANNUAL MAINTENANCE
Routine inspection and maintenance procedures are the
responsibility of the user and are outlined below.
1. Before inspecting unit:
a. Turn room thermostat to lowest or off setting.
b. Turn off equipment gas shut off valve.
c. Wait for unit to cool if it was recently
operating.
d. Turn off electrical power to unit.
2. Inspect the following:
a. Vent terminal and combustion air intake
terminal. Make sure both are free from
obstructions.
b. Vertical Vent Applications – Inspect venting
system. Make sure system has no holes, is
physically sound and free from obstructions.
c. Make sure the supply and return air flange
sleeves or duct work are securely fastened to
unit and physically sound.
d. Supply and return grilles must be open and
free from obstructions.
e. Inspect to make sure the unit is securely
fastened to the wall. Seal any possible leaks
between unit and wall with appropriate
exterior sealing material.
f. Inspect burners, heat exchanger, induced
draft blower, and induced draft blower
collector box. There must be no obvious
signs of deterioration.
g. Inspect all electrical connections and wiring.
h. Check all gas piping for leaks with soap
solution used to detect leaks.
i. Inspect, clean, and repair as needed the entire
blower assembly, air filters, draft inducer,
cooling coils, and vent options (if installed).
Manual 2100-535
Page
38 of 71
ROUTINE MAINTENANCE
1. Air Filters – Check the condition at least monthly
when the unit is in use, and replace as necessary.
2. Lubrication Requirements – The indoor circulating
air blower motor and outdoor circulating air fan
motor are permanently lubricated and require no re-
oiling. The combustion air blower motor requires no
re-oiling.
WARNING
Turn off electrical power supply to prevent
injury from moving parts or electric shock.
ROUTINE INSPECTION
1. Inspect the physical support of the unit annually to
make sure it is securely fastened to the building.
Also look for any obvious signs of deterioration.
Inspect the main burners at the beginning of each
2.
heating season and clean as necessary.
3. Inspect the vent terminal and combustion air intake
hood for any obvious deterioration, to make sure it is
free and clear of any obstructions.
29. REPLACEMENT PARTS
WARNING
Use replacement parts listed in Replacement
Parts list. Failure to do so could cause
improper furnace operation, resulting in
property damage, personal injury, or death.
Replacement parts for the gas/electric units are
available through local distributors.
A replacement parts list manual is supplied with each
unit. When ordering parts or making inquires
pertaining to any of the units covered by these
instructions, it is very important to always supply the
complete model number and serial number of the unit.
This is necessary to assure that the correct parts (or an
approved alternate part) are issued to the service
agency.
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