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Drainage valve must be installed at the lowest position of the piping system.
8.3 Cascade system
10
9
9
9
8
8
7
Code
Assembly unit
1.1
Master unit
1.2...n
Slave unit
2
User interface
3
Buffer tank(Field supply)
3.1
Automatic air purge valve
3.2
Drainge valve
3.3
Tbt: Buffer tank upper temperature sensor(optional)
3.4
Filling valve(Field supply)
4
P_o: Outside circulation pump (Field supply)
5
Expansion vessel(Field supply)
6
T1: Total water flow termperature sensor(Optional)
7
Filter(Accessory)
8
Check valve(Field supply)
9
Shut-off valve(Field supply)
NOTE
13
3
8
6
8
9
9
9
7
7
Code
15
10
12
4
12.1
12.2
5
3.4
3.1
9
9
3.3
3.2
Assembly unit
10
Collector/distributor(Field supply)
11
Bypass valve (Field supply)
12
Mixing station(Field supply)
12.1
SV3:Mixing valve(Field supply)
P_C: Zone2 circulation
12.2
pump (Field supply)
13
Water manometer(Field supply)
Zone2 water flow
temperature sensor (optional)
Fan coil unit (Field supply)
Floor heating loop (Field supply)
The space operates in
cooling/heating mode
The space only operates in
heating mode
Auxiliary heating
source(Field supply)
11
11
10
V.1
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