Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Ensure hot water temperature control is set to MAX
Attach pressure gauge to gas valve pressure outlet test point
Disconnect the compensation pipe at the gas valve
Attach pressure gauge to gas valve pressure outlet test point
Disconnect the compensation pipe at the gas valve
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
1. Maximum burner pressure
Allow the boilers burner to ignite and establish.
Maximum burner pressure measured should be as per table 1.
2. Minimum burner pressure
Disconnect one lead to the gas valve modureg coil.
Mains power ON.
Allow the burner to ignite and establish.
Minimum burner pressure measured should be as per table 1.
Note: 1. Ensure a sufficient DHW flow rate to prevent boiler from modulating the burner pressure.
Allow the boilers burner to ignite and establish.
Maximum burner pressure measured should be as per table 1.
2. Minimum burner pressure
| Isolate Mains Power to appliance as per TOP's P4 |
Mains power ON.
Allow the burner to ignite and establish.
Minimum burner pressure measured should be as per table 1.
Note: 1. Ensure a sufficient DHW flow rate to prevent boiler from modulating the burner pressure.
Isolate as per TOPs P4
and refit as necessary