Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Turn Hot Water Tap On
Disconnect the detection electrode at the in-line connector
Attach pressure gauge to gas valve pressure outlet test point
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Measurement:


Reset appliance if required (press reset button for 2 seconds and release).
Allow the boiler to start, during the ignition sequence adjust the left hand
potentiometer (soft light adjustment) until the gas pressure reads the
required soft light gas pressure as listed in the table below:
CATEGORY II2H3 +Natural GasLiquid Butane Gas Liquid Propane Gas
24 KW Model5.0 Mbar12.0 Mbar12.0 Mbar
28 KW Model5.5 Mbar12.0 Mbar12.0 Mbar
32 KW Model5.5 Mbar12.0 Mbar12.0 Mbar

1. Appliance will enter lockout during this adjustment, reset as required.
2. When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.