Set Appliance State:
Mains Power Off
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
Selector switch to heating and hot water position
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Observe the system pressure gauge, while allowing the burner to fire and the CH system to heat.
Does the system pressure remain constant at approximately 1 to 1.5 bar?
Does the system pressure remain constant at approximately 1 to 1.5 bar?
Isolate as per TOPs P4
and refit as necessary