Shutting Down The Boiler; Removing The Boiler From The Pre-Plumbing Jig Or Mounting Frame - Viessmann Vitodens 100-W B1HF Series Installation And Service Instructions Manual

Troubleshooting
Repairs
(cont.)

Shutting down the boiler

1. Turn off the power supply at the ON/OFF switch.
2. Shut off the gas supply.

Removing the boiler from the pre-plumbing jig or mounting frame

2.
Fig. 42
80
3. If the boiler needs to be removed:
Isolate the system from the power supply, e.g. by
■
removing the separate fuse or by means of a
mains isolator, and check that it is no longer live.
■ Safeguard the system against reconnection.
■ Disconnect the balanced flue system.
Drain the boiler on the heating water and DHW
■
sides.
■ Disconnect the on-site cables/leads.
3 7
3 7
4.
3.
1.