SCHEDULED MAINTENANCE
42
G
TG
T
R BR RG R
TG T T
T R R
B RT
R T RRT
G R JR R T
T T TTR T R TG
T GTR B T BR GR RG G R
BRT RT R GTR R
Q RR R T GTR
service agency at least once per year. This check should be
performed at the beginning of the heating season. This will
ensure that all furnace components are in proper working
order and that the heating system functions appropriately. Pay
particular attention to the following items. Repair or service
as necessary.
• • Flue pipe system. Check for blockage and/or leakage.
Check the outside termination and the connections at
and internal to the furnace.
• • Combustion air intake pipe system (where applicable).
Check for blockage and/or leakage. Check the outside
termination and the connection at the furnace.
• • Heat exchanger. Check for corrosion and/or buildup
within the heat exchanger passageways.
•
• • Drainage system. Check for blockage and/or leakage.
Check hose connections at and internal to furnace.
• • Wiring. Check electrical connections for tightness and/
or corrosion. Check wires for damage.
• • Filters.
R RT R TT TR T T
T B TR RT RTG
QT G B R
Filters must be used with this furnace. Filters do not ship
with these furnaces but must be provided by the installer for
proper furnace operation.
inadequate heating or cooling performance.
inadequate heating or cooling performance. Filters should
be cleaned (permanent) or replaced (disposable) every two
months or as required. It is the owner’s responsibility to keep
can be applied. Filters can be installed in the central return
Product Design
section of this manual or the product Specication Sheet must
be followed to ensure proper unit performance. Refer to the
Follow the manufacturer’s directions for service.
Filters in horizontal installations are located in the central
return register.
The bearings in the induced draft blower and circulator blower
motors are permanently lubricated by the manufacturer. No
further lubrication is required. Check motor windings for
accumulation of dust which may cause overheating. Clean
as necessary.
Model Minimum Recommended Filter Size^
*MEC960303AN* 1 - 16 X 25 Side or 1 - 14 X 25 Bottom
*MEC960403AN* 1 - 16 X 25 Side or 1 - 14 X 25 Bottom
*MEC960603AN* 1 - 16 X 25 Side or 1 - 14 X 25 Bottom
*MEC960302BN* 1 - 16 X 25 Side or Bottom
*MEC960402BN* 1 - 16 X 25 Side or Bottom
*MEC960603BN* 1 - 16 X 25 Side or Bottom
*MEC960803BN* 1 - 16 X 25 Side or Bottom
*MEC960804CN* 1 - 16 X 25 Side or Bottom
*MEC961004CN* 1 - 16 X 25 Side or Bottom
*MEC961005CN* 1 - 20 X 25 Bottom / 2 - 16 X 25 Side Return
*MEC961205DN* 1 - 20 X 25 Bottom / 2 - 16 X 25 Side Return
*CEC960403BN* 2 - 10 X 20 or 1 - 16 X 25 Top Return
*CEC960603BN* 2 - 10 X 20 or 1 - 16 X 25 Top Return
*CEC960803BN* 2 - 10 X 20 or 1 - 16 X 25 Top Return
*CEC961005BN* 2 - 14 X 20 or 1 - 20 X 25 Top Return
^ Larger filters may be used, filters may also be centrally located
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