Bosch 940 ESO Installation Manual page 23

18
22
5
21
20
19
Fig. 30 Space heating diagram
1 Hot water outlet
2 Cold water inlet
3 Pressure relief valve
4 Gas supply
5 Shut off gas valve
6 Thermal expansion tank (as required)
7 Atmospheric vacuum breaker
Cold inlet
8
9 Check valve
10 Pump
Thermostatic mixing valve
11
12 Thermometer (optional)
13 DHW outlet
Water to water heat exchanger
14
15 Backflow preventer
16 Automatic water feed
17 Thermostat
18 Space heating zone
19 Zone controller
20 Space heating pump
21 Expansion tank
22 Pressure relief valve
6 720 644 956
13
17
T
12
15
16
14
5
8
11
9
9 6
10
9
Installation instructions
7
1
3
5 4
6720644887-02.1V
2
23