Lenox Lennox Merit Series Gas Furnace Upflow/Horizontal air discharge. Furnace User Manual


 
Page 36
ML180UHE BURNER, COMBUSTION AIR INDUCER ASSEMBLY
&
HEAT EXCHANGER REMOVAL
FIGURE 37
Heat Exchanger
Gasket
Collector Box
Orifice Plate
Flue Transition
Pressure Switch
Combustion Air Inducer
Manifold And Gas Valve
Retention Rings
Cross Over
Ignitor
Rollout Switches
(−090, −110 −135 units)
Sensor
Rollout Switches
(−045 and −070 units)
ML180UHE NOx INSERTS
FIGURE 38
NOx Insert
CAUTION
Some soaps used for leak detection are corrosive to
certain metals. Carefully rinse piping thoroughly af-
ter leak test has been completed. Do not use
matches, candles, flame or other sources of ignition
to check for gas leaks.
FIGURE 39
Remove 5 screws if necessary
(either side of cabinet)
1
2
3
4
5