Connections On The Dhw Side - Viessmann Vitocell 100-B Installation Instructions Manual

Connecting the heating water side and solar side
C
A
B
Fig. 16
1. Install the heat supply control unit.
2. Check connections
if required.
Torque: 45 to 50 Nm
3. When using copper pipes:
Insert support sleeves
Torque for both union nuts: 30 Nm

Connections on the DHW side

■ For connecting the DHW side, observe DIN 1988
and DIN 4753 (CH: SVGW regulations)
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.
Connection of the DHW circulation pump:
■
Connection to the boiler control unit, provided this
–
is equipped with a DHW circulation pump connec-
tion.
– Connection with a time switch, if there is no DHW
circulation pump connection on the boiler control
unit.
18
and for leaks and tighten
A B
supplied.
C
(cont.)
4. Install the flow line with a rise and fit an air vent
valve at the highest point.
5. Only for heating water flow temperatures above
110 °C:
Install a type-tested high limit safety cut-out, if one
has not yet been installed in the system (see
pages 17 and 20). For this, use a temperature
limiter and a high limit safety cut-out.
Permissible temperature:
Permissible operating pressure:
Test pressure:
95 °C
10 bar
(1.0 MPa)
16 bar
(1.6 MPa)