Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
DHW Selector in Minimum (-) position
CH Selector in Maximum (+) position
ON/OFF Switch in ON position
DHW Selector in Minimum (-) position
CH Selector in Maximum (+) position
ON/OFF Switch in ON position
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Allow boiler to ignite and CH system to heat.
Monitor the system pressure gauge as the system heats up.
Does the system pressure remain constant as the central heating heats up?
Monitor the system pressure gauge as the system heats up.
Does the system pressure remain constant as the central heating heats up?
Isolate as per TOPs P4
and refit as necessary