Bosch 940 ESO Instruction Manual page 24

Installation instructions
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22
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Fig. 32 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
8 Cold inlet
9 Check valve
10 Pump
11 Thermostatic mixing valve
12 Thermometer (optional)
13 DHW outlet
14 Water to water heat exchanger
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
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T
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16 15
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5 4
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