Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Pre-heat enabled (pre-heat indicator lit)
No CH or DHW demand
Ensure there is a demand for pre-heat, this can be achieved
by running a hot water tap with the gas OFF at the boiler
Attach a temperature clamp to the flow pipe
No CH or DHW demand
Ensure there is a demand for pre-heat, this can be achieved
by running a hot water tap with the gas OFF at the boiler
Attach a temperature clamp to the flow pipe
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Does the appliance perform pre-heat satisfactorily?
Boiler fires until primary heat exchanger reaches approximately 50 - 60°C then shuts down.
Note. This function is enabled or disabled by rotating the DHW temperature control knob fully clockwise to the pre-heat position, hold for 2 seconds and return to the desired hot water temperature.
Pre-heat enabled displayed as 0.
Pre-heat disabled displayed as 0
Boiler fires until primary heat exchanger reaches approximately 50 - 60°C then shuts down.
Note. This function is enabled or disabled by rotating the DHW temperature control knob fully clockwise to the pre-heat position, hold for 2 seconds and return to the desired hot water temperature.
Pre-heat enabled displayed as 0.
Pre-heat disabled displayed as 0
