Page 33
HEAT EXCHANGER ASSEMBLY
FIGURE 33
BURNER
COMBUSTION
AIR INDUCER
VENT
CONNECTOR
GAS VALVE
HEAT
EXCHANGER
TUBE
E-Flue Passageway and Flue Box (Gas Units)
1- Remove combustion air inducer assembly as
described in section D.
2- Remove flue box cover. Clean with a wire brush as
required.
3- Remove inserts if installed. See figure 34.
4- Clean tubes with a wire brush.
5- Reassemble the unit. The flue box cover gasket and
combustion air inducer gasket should also be
replaced during reassembly.
F-Gas Heat Exchanger Inserts
Inserts are installed on standard (130,000Btuh) heat
exchangers. Medium and high heat exchangers do not
require inserts. See figure 34.
STANDARD HEAT (130,000BTUH)
FIGURE 34
INSERTS (2)
Note - No inserts on
medium or high heat.
INSERT LOCATION
G-Evaporator Coil
Inspect and clean coil at beginning of each cooling season.
Clean using mild detergent or commercial coil cleaner.
Flush coil and condensate drain with water taking care not
to get insulation, filters and return air ducts wet.
H-Supply Air Blower Wheel
Annually inspect supply air blower wheel for accumulated
dirt or dust. Turn off power before attempting to remove
access panel or to clean blower wheel.
J-Condenser Coil
Clean condenser coil annually with detergent or
commercial coil cleaner and inspect monthly during the
cooling season. Access panels are provided on front and
back of condenser section.
K-Needlepoint Bipolar Ionizer
The ionizer was designed for low maintenance. The
device should be checked semi-annually to confirm the
brushes are clean for maximum output. The ionizer is
located on the blower deck. See figure 35.
FIGURE 35
BIPOLAR IONIZER
IONIZER
ASSEMBLY
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