Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Boiler On/Off switch Off
Remove and disconnect internal programmer
Central Heating Thermostat to Maximum Position
DHW Thermostat to Minimum Position
Remove and disconnect internal programmer
Central Heating Thermostat to Maximum Position
DHW Thermostat to Minimum Position
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Boiler On/Off switch On.
Reset lockout if necessary.
With all other heating controls calling for heat, does the boiler now fire?
Reset lockout if necessary.
With all other heating controls calling for heat, does the boiler now fire?
Isolate as per TOPs P4
and refit as necessary