Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Attach U-gauge to fan pressure test point
Note:
If the fan air intake is removed to attach the
U-gauge it must be replaced before carrying out the test
Note:
If the fan air intake is removed to attach the
U-gauge it must be replaced before carrying out the test
| 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 into service mode by holding down the service mode
button for approx 5 seconds (red LED will flash to confirm).
Switch to maximum rate by turning the
temperature control to MAX.
Allow boiler to modulate to maximum rate
(this will take approx 40 seconds after ignition).
Check the observed fan pressure against the table.
Note: To turn service mode off press the service mode button once.
Set the boiler into service mode by holding down the service mode
button for approx 5 seconds (red LED will flash to confirm).
Switch to maximum rate by turning the
temperature control to MAX.
Allow boiler to modulate to maximum rate
(this will take approx 40 seconds after ignition).
Check the observed fan pressure against the table.
Note: To turn service mode off press the service mode button once.
Isolate as per TOPs P4
and refit as necessary