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Connections on the water side
A
F
B
Fig. 16
Boiler flow G 1
A
½
Cold water inlet for thermally activated safety valve
B
R
¾
Hot water outlet for thermally activated safety
C
valve R
¾
Drain R
D
¾
Boiler return G 1
E
½
Note
■
Only connect controlled heating circuits with mixer.
■
Always install a return temperature raising facility
(minimum return temperature 65 °C).
Safety equipment block installation instructions
Install the safety lines.
Permiss. operating pressure: 3 bar (0.3 MPa)
Test pressure: 4 bar (0.4 MPa)
Note
Equip boilers with a safety valve that is type-tested to
■
TRD 721 [or local regulations] and is marked accord-
ing to the system version.
■
Installed length (including thread) of the sensor well
for the thermally activated safety valve: 155 mm.
(cont.)
G H
C
K L M
E
D
F
G
H
K
L
M
Sensor for thermally activated safety valve (not
part of the standard delivery)
Thermally activated safety valve
Cleaning aperture
Drinking water filter
Non-return valve
Pressure reducing valve
Installation sequence
23
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