Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Close flow and return isolation valves
Discharge primary system water
Discharge primary system water
Observation:
Confirm the expansion vessel charge pressure is correct.
(valve location top rear center)
Expected pressure 0.75 bar approximately.
(valve location top rear center)
Expected pressure 0.75 bar approximately.
