Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Attach U-gauge to gas inlet pressure test point
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Reset appliance as necessary and allow the boiler to
complete its self check.
Set the boiler to service mode by holding down button
for 5 seconds until MAX is displayed.
Allow boiler to modulate to maximum rate
(this can take up to 40 seconds after ignition).
Does the pressure gauge show an acceptable gas inlet pressure, minimum N.G. 16.5mb / L.P.G. 28mb?
Note:
Press the button once to exit service mode.
When pressure gauge is removed the test point
should be tightened and checked for gas soundness.
complete its self check.
Set the boiler to service mode by holding down button
for 5 seconds until MAX is displayed.
Allow boiler to modulate to maximum rate
(this can take up to 40 seconds after ignition).
Does the pressure gauge show an acceptable gas inlet pressure, minimum N.G. 16.5mb / L.P.G. 28mb?
Note:
Press the button once to exit service mode.
When pressure gauge is removed the test point
should be tightened and checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary