Page 13
UPFLOW POSITION
Right Side Vent Discharge
FIGURE 16
FLOW
AIR
Cover Plate
Flue Transition
Vent Pipe
Pressure
Switch
Collector Box
Cut combustion air inducer tubing from 229 mm ( 9” ) to 127 mm
(5”) to avoid interference with inducer motor
HORIZONTAL LEFT POSITION
Top Vent Discharge
FIGURE 17
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.
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
Collector Box
FLOW
AIR
FIGURE 18
Make-Up Box
Collector Box
Vent Pipe
Pressure Switch
HORIZONTAL LEFT POSITION
Side Vent Discharge
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.
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
Cut combustion air inducer tubing from 227 mm (9”) to
178 mm (7”) to avoid interference with inducer motor
HORIZONTAL RIGHT POSITION
Top Vent Discharge
FIGURE 19
FLOW
AIR
Flue
Transition
Vent Pipe
Pressure Switch
Cover Plate
Collector Box
Gas supply piping must be brought into the unit from the
bottom in order to accommodate the flue pipe.
Cut combustion air inducer tubing from 227 mm (9”) to 203
mm (8”) to avoid interference with inducer motor
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