Functional Description - Vaillant ecoTEC plus 937 Instructions For Installation And Servicing

2 Unit description, data and dimensions
2.5

Functional description

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19
18
c
Fig. 2.5 Sequence diagram
Key
1 Exhaust gas
2 Heat exchanger
3 Combustion chamber
4 Water condensate siphon
5 Expansion vessel
6 Operating display
7 Secondary heat exchanger
8 Automatic air vent
9 Pump
10 Pressure relief valve
11 Diverter valve
12 Gas valve
13 Fan
14 Compact thermal module
10
a
b
17
15
14
13
12
16
15 Shift load storage tank electronics
16 storage charging pump
17 Aqua-Sensor
18 Stainless steel storage tank
19 Storage tank insulation
20 Expansion vessel
NTC sensors shift load storage tank
a Storage tank sensor
b Infeed sensor SWT
c Storage tank charging sensor
ecoTEC plus 937 installation and maintenance manual
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