Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
CH Demand
CH temperature control set to MAX
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

Observation:

Allow the boiler to ignite and run
on central heating operation.
Confirm CH circuit power adjustment is set
correctly as per table opposite.
E.G.
A 28KW model factory set to 16.0KW would require
a burner pressure of approximately 16.0 Mbar
(Propane Gas G30), this is more than adequate
for most domestic properties.
Note:
When pressure gauge is removed the pressure test point should be tightened and checked for gas tightness.