Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Isolate and drain DHW supply to boiler
Remove Gas Valve
Remove DHW flow switch
Remove Gas Valve
Remove DHW flow switch
Observation:
Inspect the DHW flow switch for blockages or restrictions.
Ensure all disturbed gas joints are checked
for gas tightness on reassembly.
Note:
If flow switch is clear do not
reassemble, continue to next test.
Ensure all disturbed gas joints are checked
for gas tightness on reassembly.
Note:
If flow switch is clear do not
reassemble, continue to next test.
Isolate as per TOPs P4
and refit as necessary