Viessmann HMU Notice De Montage page 8

GB
Removing the front panels
1. ■ Vitodens:
Turn off the ON/OFF switch and
safeguard against reconnection.
■ Vitovalor PT2:
Only turn off the ON/OFF switch
of the gas condensing module
and safeguard against reconnec-
tion. Do not turn off the ON/OFF
switch of the fuel cell module.
Operating instructions
8
2. Remove the front panels.
Installation and service
instructions