Viessmann Vitodens 100 Series Installation And Service Instructions Manual page 19

Mounting the boiler and making connections
Connection set for gas condensing
boiler (accessories)
A
Gas connection
■ Gas supply pressure: 15 - 30 mbar
(1.5 - 3.0 kPa)
■ Set value: 20 mbar (2.0 kPa)
A
E
C
Installation sequence
(cont.)
Connection set for gas condensing
combi boiler (accessories)
B
A
1. Connect the gas shut-off valve (on-
site) to adaptor A.
E
D
C
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