Viessmann VITODENS 242-F Installation And Service Instructions Manual page 23

3.2 to 26 kw gas condensing/solar storage combi boiler gas council no. 41-819-18; 41-819-19 natural gas and lpg version
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Installing the boiler
Connections on the heating water and the DHW side
E
D
C
B
A
Shown with connection sets for finished walls (accessories)
A Heating flow R¾
B DHW R½
C DHW circulation R½ (separate
accessory)
(cont.)
A B
C
D E
Installation sequence
D Cold water R½
E Heating return R¾
A
B
C
D
E
23

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