Solar domestic hot water system

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Solar domestic hot water system

How it works

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Solar domestic hot water system

How it works ETLV

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STS Maintenance

Example of installation

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How it works ETLV

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STS Maintenance

LEGEND FOR INSTALLATION DIAGRAMS

1 Heating flow 2 Heating return 3 3-bar safety valve 4 Pressure gauge 5a Flow meter 7 Automatic air vent 8 Manual bleed valve 9 Isolation valve 10 Three-way mixer valve 11 Heating accelerator 13 Flush valve 15 Shunt pump 16 Expansion vessel 17 Drain valve 18 Heating circuit filling 20 Water meter 21 Outside sensor 22 Boiler sensor

23 Flow sensor after mixing valve 24 Exchanger primary inlet 25 Exchanger primary outlet 26 Booster pump

27 Non-return valve 28 Domestic cold water inlet

29 Pressure reducer (if supply pressure > 80% of the safety valve rating)

30 Domestic safety unit calibrated and sealed to 7 bar

32 DHW loop pump 33 DHW sensor 34 Primary pump 35 Low-loss header 37 Balancing valve

44 65°C safety thermostat with manual reset for underfloor heating

46 2-position three-way directional valve 50 Disconnector

51 Thermostatic valve 56 DHW circulation loop return 57 Domestic hot water outlet 61 Thermometer

64 "Radiator" circuit

65 Heating circuit with mixing valve (underfloor heating for example) 68 Condensates neutralisation system 75 Pump for DHW use

79 Solar exchanger primary outlet 80 Solar exchanger primary inlet

85 Primary solar circuit pump 86 Solar primary flow rate adjustment 87 Safety valve calibrated to 6 bar 88 Solar circuit expansion vessel 89 Container for solar fluid

90 Anti-thermosiphon loop (= 10 x tube Ø) 101 Ball valve with non-return valve 109 Thermostatic mixing valve 112a Solar collector sensor 112b Solar tank DHW sensor 112c 2nd exchanger sensor

112d Plate heat exchanger outflow sensor 112e Top DHW sensor

114 Primary solar circuit filling and draining device

115 Thermostatic distribution valve for each zone 124 Thermostat controlled distribution valve 126 Solar regulator

129 DUO-TUBES

130 Manual venting degasser (Airstop) 131 Collector field

132 Solar station

133 Interactive remote control 166 Buffer tank pump

Work to do

 Thanks to your knowledge, explain how this system works. To begin with something simpler, you can describe the functioning below.

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How it works ETLV

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STS Maintenance ______________________________________________________________________________________________

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