Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Observation:
Visually inspect the flow and return isolation valves.
Are they both fully open?
Note:
Isolation valves are fully open when the line on the valve is in line with the pipework to and from it as shown below.
Are they both fully open?
Note:
Isolation valves are fully open when the line on the valve is in line with the pipework to and from it as shown below.
