Set Appliance State:
Mains Power Off
Set Boiler Control Thermostat to MAX position
CH Demand
Note
This test is relevant only if the appliance is connected to a sealed heating system. Select "System pressure stable" if appliance is connected to an open vented system and read diagnostic text.
Gas On
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Observation:
Allow boiler to fire and system to heat.
Observe system pressure, does it remain stable at the system design pressure?
This is nominally 0.7-1.0 bar, however system may require different pressures and this should be investigated as necessary i.e. BS 5449.
Observe system pressure, does it remain stable at the system design pressure?
This is nominally 0.7-1.0 bar, however system may require different pressures and this should be investigated as necessary i.e. BS 5449.
