Set Appliance State:
Mains Power Off
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Test 1.
Apply a DHW demand and allow boiler to ignite and run for 30 seconds, then remove DHW demand.
Pump overrun should run for approximately 30 seconds.
Test 2.
Apply a CH demand and allow boiler to ignite and run for 30 seconds, then remove CH demand.
Pump should overrun for approximately 5 minutes (factory set).
Does the pump overrun operate as expected?
Note:
Early versions of these appliances had a pump without PWM control even though a wire for it is present (these pumps can be identified by not having the letter "IZA" after the pump model number) for these pumps DHW overrun will be 2.5 minutes and CH overrun will be 7 minutes.
Apply a DHW demand and allow boiler to ignite and run for 30 seconds, then remove DHW demand.
Pump overrun should run for approximately 30 seconds.
Test 2.
Apply a CH demand and allow boiler to ignite and run for 30 seconds, then remove CH demand.
Pump should overrun for approximately 5 minutes (factory set).
Does the pump overrun operate as expected?
Note:
Early versions of these appliances had a pump without PWM control even though a wire for it is present (these pumps can be identified by not having the letter "IZA" after the pump model number) for these pumps DHW overrun will be 2.5 minutes and CH overrun will be 7 minutes.
Isolate as per TOPs P4
and refit as necessary