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