Viessmann C3TB, Installation And Service Instructions For Contractors

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26
Heating water and DHW connections
F
C
A
B
E
A
C
F
E
B
A C F
B E
D
D
D
Fig. 20 The illustration shows all of the connection
sets available as accessories.
A
Heating flow R
¾
B
DHW R
½
C
Gas connection R
½
D
DHW circulation R
½
E
Cold water R
½
F
Heating return R
¾
!
Please note
Under certain operating conditions, DHW outlet
temperatures above 60 °C may arise, which
could result in scalding.
Install an automatic thermostatic mixing valve
(accessories) in the DHW line as protection
against scalding.
Safety assembly to DIN 1988 and EN 806 on the cold water connection
C
F
B
D E GH D
K
D H L M D N K
A
O
Fig. 21
A Safety assembly
B
Safety valve 10 bar (AT: 6 bar)
C
Visible discharge pipe outlet point (tundish)
D
Shut-off valve
E
Flow regulating valve (installation recommended)
F
Pressure gauge connection
G
Non-return valve
H
Drain
K Cold water
L
Drinking water filter
M
Pressure reducing valve to DIN 1988-2, Dec. 1988
issue
N
Non-return valve/pipe separator
O
Cold water connection at connection set (accesso-
ries)
Installation sequence
Installing the Vitovalor 300-P
(cont.)
5775 636 GB
Installation