Set Appliance State:
Mains Power Off
Pre-heat switched OFF (turn comfort switch to E position)
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Test 1.
Apply a DHW demand and allow boiler to 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 run for a 30 seconds, then remove CH demand.
Pump overrun should run for approximately 2 minutes.
(CH pump overrun may operate for less than 2 minutes depending on system temperature).
Does pump overrun operate correctly?
Apply a DHW demand and allow boiler to 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 run for a 30 seconds, then remove CH demand.
Pump overrun should run for approximately 2 minutes.
(CH pump overrun may operate for less than 2 minutes depending on system temperature).
Does pump overrun operate correctly?
Isolate as per TOPs P4
and refit as necessary