Repairs; Shutting Down The Boiler - Viessmann Vitodens 200-W B2HE Installation And Service Instructions Manual

Repairs

!
Please note
Residual water will escape when the boiler or
one of the following components is fitted or
removed:
■ Water-filled pipework
Heat exchanger
■
Circulation pumps
■
Plate heat exchanger
■
■ Components fitted in the heating water or
DHW circuit.
Water ingress can result in damage to other
components.
Protect the following components against
ingress of water:
■ Control unit components (especially in the
service position)
■ Electrical components
Plug-in connections
■
Cables and leads
■

Shutting down the boiler

1. Switch OFF the power supply.
2. Shut off the gas supply.
3. If the boiler needs to be removed:
■ Disconnect the balanced flue system.
■ Drain the boiler on the heating water and DHW
sides.
Disconnect the on-site cables/leads.
■
Troubleshooting
97