Connections On The Dhw Side - Viessmann VITOCELL 300-B Installation And Service Instructions Manual

Installation sequence

Connections on the DHW side

For connections on the DHW side, observe
■
DIN 1988 and DIN 4753.
: SVGW regulations.
c
■ Connect all pipework with detachable fittings.
■ Seal any connections that are not required with red
brass caps.
Equip the DHW circulation pipe with a DHW circula-
■
tion pump and a check valve.
■ Connecting the DHW circulation pump:
– Connection to the boiler control unit if it is equip-
ped with a DHW circulation pump connection.
Connection with a time switch if no DHW circula-
–
tion pump connection is available on the boiler
control unit.
– Connection via time switch.
■ Always install cylinder banks with connected DHW
circulation.
F
H
G
K
A
D
A
B
C
B
E
Fig. 16 300 l capacity
Upper Internal indirect coil for connection to the
A
heat generator
Lower indirect coil for connecting to solar collec-
B
tors
C Diaphragm expansion vessel
DHW circulation pipe
D
Drain
E
DHW
F
G Spring-loaded check valve
DHW circulation pump
H
Visible discharge pipe outlet point
K
20
S
L
M O
R
N P M
!
Please note
The internal indirect coil is installed with gas-
kets.
■ Temperatures > 150 °C at the connections will
damage the gaskets.
Maintain a safe distance when soldering and
welding.
Realigning the connector will damage the gas-
■
kets.
M
T M W
U V
R
Safety valve
L
Shut-off valve
M
N Flow regulating valve
Pressure gauge connector
O
Non-return valve
P
Drain
R
Cold water
S
Drinking water filter
T
Pressure reducer
U
Non-return valve/pipe separator
V
Cold water
W