Vaillant aquaPLUS VUI 362-7 Service Manual download pdf (Page 6)

3.2 Boiler connections

Key:

1 Heating system return (22 mm tail)

2 Cold water connection with shut off valve (15 mm

tail)

3 Gas connection (22 mm tail)

4 Hot water connection (15 mm tail)

5 Heating system flow (22 mm tail)

6 Flue outlet (100 mm flue with turret)

7 Hanging bracket

Fig. 3.1: Connection diameters

543 21

122

780

100100

35 35

310

5 4321

130

180

3 Boiler Specification

Instructions for installation and servicing aquaPLUS VUI 362-76

3.3 Functional Diagram

Key:

1 Air duct

2Fan

Power store

4 Main heat exchanger

5 Temperature sensor (NTC I)

6 Temperature sensor (NTC III)

7 Diverter valve

8 DHW pressure relief valve

9 Temperature sensor (NTC IV)

10 DHW heat exchanger

11 DHW expansion vessel

12 DHW pump

13 Automatic bypass valve

14 CH flow service valve

15 Hot water outlet

16 Gas service valve

17 Cold water service valve

18 CH return service valve

19 Filling loop

20 Pressure relief valve

21 Aqua sensor (DHW flow switch)

22 Expansion vessel

23 Electronic box

24 Fully modulating automatic gas value

25 Circulating pump

26 Automatic air vent

27 Modulating burner

28 Temperature sensor (NTC II)

29 Air pressure switch

30 Flue gas duct

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Vaillant aquaPLUS VUI 362-7 Service Manual Page 6

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