Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
ON/OFF Switch in ON Position
CH Temp Selector in Minimum position
DHW Temp Selector in Maximum position
Mode Selector Switch in Heat and Hot water position
Attach U-gauge to Inlet Pressure Test Point
CH Temp Selector in Minimum position
DHW Temp Selector in Maximum position
Mode Selector Switch in Heat and Hot water position
Attach U-gauge to Inlet Pressure Test Point
Gas On
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Allow Fan to run and ignition sequence to commence.
Does the U-gauge show a constant Inlet Pressure of at least 18mb throughout the ignition sequence?
Note:
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Does the U-gauge show a constant Inlet Pressure of at least 18mb throughout the ignition sequence?
Note:
When U-gauge is removed pressure test point should be tightened & checked for gas soundness.
Isolate as per TOPs P4
and refit as necessary