Bosch ZWB 42-3 A NG - Examples of Installations; Multiple Zones Using Zone Valves with DHW

Examples of Installations
25
Greenstar – 6721822579 (2021/01)
5 Examples of Installations
5.1 Multiple zones using zone valves with DHW
Fig. 9 Piping
[1] Motorized valve heating zone 2
[2] To heating zone 2
[3] Bosch room temperature controller heating zone 2 (CRC100)
[4] Motorized valve heating zone 1
[5] To heating zone 1
[6] Bosch controller heating zone 1 and DHW (CRC200)
[7] System pump
[8] DHW pump
[9] To indirect tank
[10] Comfort Zone Module CZM100
[11] External system supply temperature sensor for system supply
pipe (to be installed in closest vicinity with boiler supply Tee)
[12] Boiler primary line - supply pipe 1"
[13] Boiler primary line - return pipe 1"
[14] Heating boiler ZBR...-3A
[15] From indirect tank
[16] From heating zone 1
[17] From heating zone 2
[18] Expansion vessel
X ≤ 4 × pipe diameters on boiler primary side (here ≤ 4 × 1")
For all accessories not included in the package please refer to the Bosch
Product Catalog.
ϑ
MM
2
3 6
5
9
7
8
X
1615 17
13
1
4
14
18
10
12
11
6 720 806 992-03.2O