Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Turn OFF Flow and Return Valves
Drain Primary Water from Boiler
Remove Combustion Cover Case
Remove Condensing Heat Exchanger following Manufacturers Instructions
Drain Primary Water from Boiler
Remove Combustion Cover Case
Remove Condensing Heat Exchanger following Manufacturers Instructions
Observation:
Look inside the Condensing heat exchanger flueways and check there is no restrictions or build up of debris.
Also check the flueway at the fan entry point of the heat exchanger and the condensate connection at the bottom.
Also check the flueway at the fan entry point of the heat exchanger and the condensate connection at the bottom.
Isolate as per TOPs P4
and refit as necessary