18
UP
HV
HR
STS
RV
Fig. 15
HR Heating water return
HV
Heating water flow
RV
Spring-loaded check valve
STS Cylinder temperature sensor or temperature con-
troller and high limit safety cut-out (if required).
From 750 l: To left of heating water flow when
seen from connection side
UP
Circulation pump
1.
In the case of heating water flow temperatures in
excess of 95 °C and cylinder capacity from 160 to
300 l: Remove the pipe collars from the pipe out-
lets on the heating water side.
Note
Pipe collars have l.h. threads.
2.
Install the heat supply control unit.
Note
One temperature controller in one of the cylinders
is sufficient for cylinder banks. A water temperature
controller may also be used instead of the temper-
ature controller.
3.
Install the flow line with a rise and fit an air vent
valve at the highest point.
4.
Only for heating water flow temperatures above
110 °C: If the system does not already have one,
also install a type-tested high limit safety cut-out.
For this, use a TR/STB (temperature limiter and
high limit safety cut-out).
Connections on the DHW side
■
For connections on the DHW side, observe
DIN 1988 and DIN 4753.
■
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, check valve and time switch.
■
Connect the DHW circulation pump either to the
boiler control unit or via a time switch.
Permissible operating
pressure:
10 bar (1 MPa)
Test pressure:
16 bar (1.6 MPa)
Permissible tempera-
ture:
95 °C
L
P
S
T
U
L
R
L
M
N
O
P
L
R
E
H
G
F
A
A
D
B
C
K
Fig. 16
A
Internal indirect coil for connection to the heat gen-
erator
B
Diaphragm expansion vessel
C
Drain outlet
D
DHW circulation pipe
E
DHW
F
Spring-loaded check valve
G
DHW circulation pump
H
Visible discharge pipe outlet point (tundish)
K
Safety valve
L
Shut-off valve
M
Flow regulating valve
Connections on the heating water side
(cont.)
5813557
Summary of Contents for CVA
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