Viessmann VITODENS 111-W Installation And Service Instructions Manual page 15

Mounting the boiler and making the connections
Making the connections on the water side
See separate installation instruc-
tions for installation of fittings on
the heating water side and DHW
side.
!
Please note
To prevent appliance damage,
connect all pipework free of load
and torque stress.
A B C
¨
A Heating flow
B Heating return
C Gas connection
D Cold water
E DHW
Connection on the domestic hot
water side
Permiss. cylinder operating pressure:
10 bar.
Fit a safety valve and pressure limiter in
the case of higher mains pressure.
No flow limiter is fitted into the cold water
supply.
D E
Installation sequence
(cont.)
15