
Individual cy-
linder
Cylinder bank with
Viessmann header
Permissible heating water
flow temperature
160 °C
120 °C
160 °C
Permissible operating pres-
sure
&
heating water side
25 bar
18 bar
16 bar
&
DHW side
10 bar
10 bar
10 bar
Test pressure
&
heating water side
40 bar
&
DHW side
13 bar
Permissible DHW tempera-
ture
95 °C
HR
Heating water return
HV
Heating water flow
RV
Spring-loaded check valve
STS Cylinder temperature sensor or
thermostat and high limit safety
cut-out (if required).
From 750 litres: As seen from
the connection side, on the l.h.
side of HV.
UP
Circulation pump
1.
For heating water flow tempera-
tures in excess of 95 ºC: Remove
the cover bezels from the primary
pipe outlets (bezels have l.h.
threads).
Connection on the heating water side
(cont.)
26
58
62
890
GB