Functional Diagram - Vaillant TURBOmax Pro 28/2 E Instructions For Installation And Servicing

BOILER SPECIFICATION
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Fig. B.2: Functional Diagram
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Supplied By www.heating spares.co Tel. 0161 620 6677
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Functional Diagram

1 Air duct
2 Fan
31
3 Main heat exchanger
4 Temperature sensor (NTC I)
30
5 Flame sensing electrodes
6 Modulating burner
29
7 Fully modulating automatic gas
value
8 Maximum hot water temperature
control
28
9 Maximum radiator temperature
control
10 Diverter valve
27
11 DHW heat exchanger
12 Automatic bypass valve
26
13 CH flow service valve
25
14 Hot water outlet
24
15 Gas service valve
23
16 Service valve
22
17 Service valve
21
18 Pressure relief valve
19 Aqua sensor (DHW flow switch)
21 Main on/off control
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22 Pressure gauge
23 Indicator lights
24 Expansion vessel
18
25 Expansion vessel charging valve
26 Circulating pump
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16
27 Automatic air vent
28 Ignition electrode
29 Temperature sensor (NTC II)
30 Air pressure switch
31 Flue gas duct