23
D
F
G H
K L M
E
A
C
B
Fig. 16
A
Boiler flow G 1
½
B
Cold water inlet for thermally activated safety valve
R
¾
C
Hot water outlet for thermally activated safety
valve R
¾
D
Drain R
¾
E
Boiler return G 1
½
F
Sensor for thermally activated safety valve (not
part of the standard delivery)
G
Thermally activated safety valve
H
Cleaning aperture
K
Drinking water filter
L
Non-return valve
M
Pressure reducing valve
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.
Installation sequence
Connections on the water side
(cont.)
5777 985 GB
Installation
Содержание VITOLIGNO 200-S
Страница 72: ...72 Maintenance Extension kit for heating circuit with mixer cont 5777 985 GB Maintenance ...
Страница 78: ...78 Parts lists Control unit assembly cont 5777 985 GB Components ...
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