Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Remove PCB Cover
Safely connect a link between pin 1 and 2 on connector X4a
Attach U-gauge to burner pressure test point
Safely connect a link between pin 1 and 2 on connector X4a
Attach U-gauge to burner pressure test point
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Allow the burner to ignite and establish.
The required burner pressure will depend on the size of the central heating system and may be set at any point between 2.5mb and 9.5mb.
The factory set pressure is 6.0mb and should be
appropriate for most systems (16.7kW).
Adjust potentiometer P3 until U-gauge shows required burner pressure
(clockwise to decrease anti-clockwise to increase).
Notes:
When U-gauge is removed test point should be checked for gas tightness.
Remove link when test is complete.
The required burner pressure will depend on the size of the central heating system and may be set at any point between 2.5mb and 9.5mb.
The factory set pressure is 6.0mb and should be
appropriate for most systems (16.7kW).
Adjust potentiometer P3 until U-gauge shows required burner pressure
(clockwise to decrease anti-clockwise to increase).
Notes:
When U-gauge is removed test point should be checked for gas tightness.
Remove link when test is complete.
Isolate as per TOPs P4
and refit as necessary