Remove diff. pressure switch tubing
24
Change/Replace Combustion Chamber (cont.)
Remove the 2 screws from Ignitor pull out slightly
then rotate 180 degrees then pull rest of way out.
Remove flame sensor
Step 17
Remove screw from the wire harness holder (left).
Remove wires from holder and set aside.
Remove wire harness screw
Step 18
Pull temp sensor wiring
Pull the thermistor (temperature sensor) wire out
of the heater.
Step 19
Remove silicone tubing from differential pressure
switch. Front hose goes to the “T” connection and
the rear hose goes to the blower.
Step 20
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