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EL180DFE BURNER, COMBUSTION AIR INDUCER ASSEMBLY &
HEAT EXCHANGER REMOVAL
FIGURE 24
heat exchanger
gasket
collector box
orifice plate
internal flue pipe
pressure switch
combustion air inducer
retention rings
cross over
flue chase
gasket
Sensor
Rollout Switch
Rollout Switch
(Alternate Location)
11- To clean the combustion air inducer visually inspect and
using a wire brush clean where necessary. Use com
pressed air to clean off debris and any rust.
12- Reinstall heat exchanger in vestibule. (Replace the
five screws in the cabinet from step 10 if removed).
13- Reinstall collector box, combustion air assembly, inter
nal flue pipe and flue chase.
Seal with high tempera
ture RTV
. Reinstall all screws to the collector box and
combustion air inducer. Failure to replace all screws
may cause leaks. Inspect gaskets for any damage and
replace if necessary.
14- Reinstall burner box, manifold assembly and burner box
cover.
15- Reconnect all wires.
16- Reconnect top cap and vent pipe to combustion air in
ducer outlet.
17- Reconnect gas supply piping.
18- Turn on power and gas supply to unit.
19- Set thermostat and check for proper operation.
20- Check all piping connections, factory and field, for gas
leaks. Use a leak detecting solution or other preferred
means.
Some soaps used for leak detection are
corrosive to certain metals. Carefully rinse piping
thoroughly after leak test has been completed. Do
not use matches, candles, flame or other sources
of ignition to check for gas leaks.
21- If a leak is detected, shut gas and electricity off and
repair leak.
22- Repeat steps 21 and 23 until no leaks are detected.
23- Replace access panel.
FIGURE 25
Remove five screws if necessary
(either side of cabinet)
1
2
3
4
5
