Gas Connection - Viessmann VITODENS 200 Installation Instructions Manual

Gas connection

A Gas connection
Notes regarding operation with
LPG.
We recommend the installation of an
external safety solenoid valve when
installing the boiler in rooms below
ground level.
1. Carry out a gas soundness test.
!
Please note
Excessive test pressure
may damage the boiler and
the gas valve.
Max. test pressure 150mbar.
Where higher pressure is
required for leak tests, sepa-
rate the boiler and the gas
valves from the mains gas
supply pipe (undo the fit-
ting).
2. Vent the gas supply pipe.
Conversion to other gas
types:
Conversion kit installation
instructions
9