Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Attach U-gauge to gas inlet pressure test point
CH Temperature control set to MAX
CH Temperature control set to MAX
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Reset boiler as necessary and allow the
appliance to complete its self check.
Observe the inlet pressure.
During the sparking stage of the ignition sequence there should be
a noticeable dip from standing to working pressure as the gas valve opens.
The Inlet pressure should also be at least 16.5mb (28mb for LPG) throughout the boiler ignition sequence and operation.
Note:
When pressure gauge is removed the test point should be tightened and checked for gas soundness.
appliance to complete its self check.
Observe the inlet pressure.
During the sparking stage of the ignition sequence there should be
a noticeable dip from standing to working pressure as the gas valve opens.
The Inlet pressure should also be at least 16.5mb (28mb for LPG) throughout the boiler ignition sequence and operation.
Note:
When pressure gauge is removed the test point should be tightened and checked for gas soundness.
