Viessmann VITODENS 111-W Installation And Service Instructions Manual page 9

Preparing for boiler installation
Safety assembly to DIN 1988 and EN 806 on the cold water connection
A
B
D E F GH D
C
O
Fig. 2
Safety assembly (accessory for connection sets for
A
unfinished walls)
Safety valve
B
Visible discharge pipe outlet point (tundish)
C
Shut-off valve
D
Flow regulating valve (installation recommended)
E
Pressure gauge connection
F
Non-return valve
G
(cont.)
D H L M
K
Drain
H
Cold water
K
Drinking water filter
L
Pressure reducer to DIN 1988-2, Dec. 1988 issue
M
Non-return valve/pipe separator
N
Cold water connection at connection set (accesso-
O
ries)
Installation information
D N K
9