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)
6Flue outlet (100 mm flue with turret)
7
Hanging bracket
Fig. 3.1: Connection diameters
7
5
4 3
2
1
6
122
780
100
100
35
35
6
310
5
4
3
2
1
130
180
3 Boiler Specification
Instructions for installation and servicing aquaPLUS VUI 362-7
6
3.3 Functional Diagram
Key:
1
Air duct
2
Fan
3
Power store
4
Main heat exchanger
5
Temperature sensor (NTC I)
6Temperature 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
16Gas 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
26Automatic air vent
27
Modulating burner
28
Temperature sensor (NTC II)
29
Air pressure switch
30
Flue gas duct
Supplied by HeatingSpares247.com
