Gas Connection - Viessmann Vitodens 100-W Installation And Service Instructions Manual

Installing the boiler and making all connections

Gas connection

A
Installation sequence
(cont.)
1. Connect gas shut-off valve to con-
nection A.
2. Carry out a leak/tightness test.
!
Please note
Excessive test pressure may
damage the boiler and the gas
valve.
Max. test pressure 150 mbar.
Where higher pressure is
required for tightness tests,
separate the boiler and the
gas valves from the gas sup-
ply pipe (undo the fitting).
3. Vent the gas supply pipe.
11