Page 26
11 -
To clean the combustion air inducer visually inspect
and using a wire brush clean where necessary. Use
compressed 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,
internal flue pipe and flue chase. Seal with high
temperature 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
inducer 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.
21 - If a leak is detected, shut gas and electricity off and
repair leak.
CAUTION
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.
22 - Repeat steps 21 and 23 until no leaks are detected.
23 - Replace access panel.
Remove five screws if necessary
(either side of cabinet)
1
2
3
4
5
FIGURE 25
