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HORIZONTAL LEFT POSITION
Top Vent Discharge
FIGURE 19
D Disconnect pressure switch hose from barbed fitting on the
pressure switch assembly. Remove pressure switch assembly
(1 screw) and cut wire tie to free pressure switch wires. Re−
install pressure switch on the other side of orifice plate and re−
connect pressure switch hose.
D Re−secure pressure switch wires: Either pull excess wires
through the blower compartment and secure using supplied
wire tie, or coil excess wire and secure to the gas manifold.
Pressure
Switch
Vent Pipe
Flue
Transition
Cover Plate
Make−Up Box
Collector Box
FLOW
AIR
FIGURE 20
Make−Up Box
Collector Box
Vent Pipe
Pressure Switch
HORIZONTAL LEFT POSITION
Side Vent Discharge
D Disconnect pressure switch hose from barbed fitting on the
pressure switch assembly. Remove pressure switch assembly
(1 screw) and cut wire tie to free pressure switch wires. Re−
install pressure switch on the other side of orifice plate and re−
connect pressure switch hose.
D Re−secure pressure switch wires: Either pull excess wires
through the blower compartment and secure using supplied
wire tie, or coil excess wire and secure to the gas manifold.
FLOW
AIR
D Cut combustion air inducer tubing from 9" to 7" to avoid inter-
ference with inducer motor
HORIZONTAL RIGHT POSITION
Top Vent Discharge
FIGURE 21
D Remove make−up box assembly (2 screws) and cut wire tie to
free make−up box wires. Re−install make−up box on other side
of cabinet.
D Re−secure make−up box wires: Either pull excess wires through
the blower compartment and secure using supplied wire tie, or
coil excess wire and secure to the gas manifold.
FLOW
AIR
Flue
Transition
Vent Pipe
Pressure Switch
Cover Plate
Make−Up Box
Collector Box
D Gas supply piping must be brought into the unit from the bot-
tom in order to accommodate the flue pipe.
D Cut combustion air inducer tubing from 9" to 8" to avoid inter-
ference with inducer motor
HORIZONTAL RIGHT POSITION
Side Vent Discharge − no modifications necessary
FIGURE 22
FLOW
AIR
Pressure Switch
Flue Transition
Collector Box
Make−Up Box
Vent Pipe