3.13 BURNER/DOOR ASSEMBLY REPLACEMENT
3.12 BURNER INJECTOR REPLACEMENT
1. Refer to Sections 3.2 to 3.4.
2. Remove the ignition, detection and earth leads.
3. Remove the 2 clips securing the gas inlet pipe and remove the pipe.
4. Remove the fan leads.
5. Remove the 4 securing nuts retaining the burner/door/fan assembly.
6. Remove the assembly from the heat exchanger.
7. To remove the venturi release the 2 securing screws.
8. To remove the fan release the 3 screws securing the fan to the burner / door
assembly.
9. Remove the ignition and detection probes.
10. Ret the fan, venturi, ignition probe and detection probe to the new burner / door
assembly.
11. Ret in reverse order
12. Check the operation of the boiler. Refer to Sections 2.24 - 2.27.
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3.14 RETURN THERMISTOR RENEWAL
1. Refer to Sections 3.2 to 3.3
2. Unclip the return thermistor.
3. Disconnect the electrical lead from the thermistor
4. Reconnect the electrical lead to the new
thermistor and reassemble in reverse order,
ensuring that the thermistor is securely tted to
the pipe on the thermistor locator tabs as shown.
5. Check the operation of the boiler. Refer to
Sections 2.24 - 2.27.
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3
1. Refer to Sections 3.2 to 3.4
2. Remove the 2 clips securing the gas inlet pipe and remove the pipe.
3. Carefully ease the injector out of the gas valve.
4. Replace injector ‘O’ ring.
5. Re-t in reverse order ensuring the sealing o ring is in good condition or
replace if necessary.
6. Ret the gas pipe ensuring the seals are in good condition and correctly
located.
7. Secure with the clips.
8. Check the operation of the boiler. Refer to Sections 2.24 - 2.27.
SERVICINGSERVICING
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