4.2.3
Replace in reverse order and carry out a gas test
4.3
Removing the ultrasonic receiver.
4.3.1
Remove the burner from the combustion chamber as described in
section 4.1.
4.3.2
Disconnect the control wires from the receiver.
4.3.3
Disconnect the ignition wire.
4.3.4
Re-fit the new receiver and re-fit the control wires to the control valve.
4.3.5
Re-assemble the burner unit to the combustion chamber and carry out a
gas tightness test.
4.4
Removing the pilot assembly
4.4.1
Remove the burner from the combustion chamber as described in
section 4.1.
4.4.2
Disconnect the pilot supply pipe, ignition wire and thermocouple
connection to the gas contol valve.
4.4.3
Remove the pilot retaining screws and lift the pilot assembly clear
4.4.4
Re-assemble in reverse order and carry out a gas tightness test.
4.5
Removing the convection fan / thermal switch
4.5.1
Remove the burner from the combustion chamber as described in
section 4.1.
4.5.2
Ensure that the electrical supply to the fire is isolated.
4.5.3
Disconnect the wiring to the motor on the convection fan
4.5.4
Remove the retaining screws that hold the convection fan assembly to
the base of the combustion chamber.
4.5.5
Disconnect the thermal switch wires.
4.5.6
Lift the convection fan assembly clear if required.
4.5.7
Re-assemble in reverse order.
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