Viessmann Vitodens 100 Series Installation And Service Instructions Manual page 13

Preparing for installation
Dimensions and connections
400
5
A B C D
F
58 58
123 123
A Heating flow G ¾
B Gas condensing system boiler:
Cylinder flow G ¾
Gas condensing combi boiler:
DHW G ½
C Gas connection G ¾
D Gas condensing system boiler:
Cylinder return G ¾
Gas condensing combi boiler:
Cold water G ½
(cont.)
E
Preparing for installation
350
158
128
225
E Heating return G ¾
F Condensate drain/safety valve
drain: Plastic hose 7 22 mm
13