Viessmann VITOCELL 100-W - Connections on the DHW Side

18
A
B
C
Fig. 16
1. Install the heat supply control unit.
2.
Check connections
A
and
B
for leaks and tighten
if required.
Torque: 45 to 50 Nm
3. When using copper pipes:
Insert support sleeves
C
supplied.
Torque for both union nuts: 30 Nm
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.
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.
Permissible temperature: 95 °C
Permissible operating pressure: 10 bar
(1.0 MPa)
Test pressure: 16 bar
(1.6 MPa)
Connecting the heating water side and solar side (cont.)
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