Lennox ELITE Series Installation Instructions Manual page 14

Gas furnace upflow / horizontal air discharge
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HORIZONTAL LEFT POSITION
Top Vent Discharge
Vent
Pipe
Flue
Transitio
n
Cover Plate
Make-Up Box
S
Disconnect pressure switch hose from barbed fitting on the pres­
sure 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.
S
Re-secure pressure switch wires by either pulling excess wires
through the blower compartment and securing with supplied wire
tie or coil excess wire and secure to the gas manifold.
FIGURE 18
HORIZONTAL LEFT POSITION
Side Vent Discharge
Pressure Switch
Flue Transition
Make-Up Box
S
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.
S
Re-secure pressure switch wires by either pulling excess wires
through the blower compartment and securing with supplied
wire tie, or coil excess wire and secure to the gas manifold.
FIGURE 19
Horizontal Position
Pressure Switch
AIR
FLOW
Collector Box
AIR
FLOW
Collector Box
Page 14
HORIZONTAL RIGHT POSITION
Top Vent Discharge
Vent Pipe
Flue Transition
AIR
FLOW
S
Gas supply piping must be brought into the unit from the bottom
in order to accommodate the flue pipe.
S
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.
S
Re-secure make-up box wires by either pulling excess wires
through the blower compartment and securing with supplied
wire tie, or coil excess wire and secure to the gas manifold.
FIGURE 20
HORIZONTAL RIGHT POSITION
Side Vent Discharge
Pressure Switch
AIR
FLOW
make up box
FIGURE 21
Pressure Switch
Cover Plate
Collector Box
Make-Up Box
Flue
Transition
Collector Box

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