17
300 and 500 l cylinder bank
Z
Z
Z
HV
KW
HR
WW
ELV TR
EV
Fig. 14
ELV Air vent valve
EV
Drain valve
HR Heating water return
HV Heating water flow
KW Cold water
TR
Temperature controller
WW DHW
Z
DHW circulation
750 and 950 l:
Install headers on site.
■
Install the temperature controller in the final cylinder,
as viewed from the heating water flow.
■
Connect the cold water supply opposite the DHW
connection.
Note
The "DHW" connection can also be made on the same
side as the heating water flow. The "cold water" con-
nection can be made on the same side as the heating
water return. This ensures that every cylinder is heated
and that water is drawn off from every cylinder equally.
Connections on the heating water side
■
Connect all pipework with detachable fittings.
■
Seal any connections that are not required with red
brass caps.
■
Adjust the temperature controller and high limit
safety cut-out so that the DHW temperature in the
DHW cylinder does not exceed 95 °C.
Individual cylinder
Cylinder bank with Viessmann header
Permissible heating water flow tempera-
ture
160 °C
120 °C
160 °C
Permissible operating pressure
■
Heating water side
25 bar
2.5 MPa
18 bar
1.8 MPa
16 bar
1.6 MPa
■
DHW side
10 bar
1 MPa
10 bar
1 MPa
10 bar
1 MPa
Test pressure
■
Heating water side
40 bar
4 MPa
■
DHW side
16 bar
1.6 MPa
Permissible DHW temperature
95 °C
Preparing a multi cylinder bank
(cont.)
5813557
Summary of Contents for CVA
Page 23: ...23 5813557 ...
