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Functional Diagram Of The Heater - Bosch WR11B series Installation Manual And Operating Instructions

Gas instantaneous water heater
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2.8

Functional diagram of the heater

Fig. 2
Functional diagram
1
Pilot burner
2
Igniter electrode
3
Ionisation detector
4
Heat exchanger
5
Main burner
6
Injector
7a
Testing point for burner pressure
7b
Testing point for supply pressure
8
Venturi
9
Temperature/volume selector
10
Water valve
11
Adjusting screw for min. water flow rate
12
Water flow regulator
13
Water filter
14
Cold water supply pipe
15
Diaphragm
16
Microswitch
17
Main gas valve
18
Regulating screw
Technical Characteristics and Dimensions | 7
19
Gas inlet
20
Gas filter
21
Battery compartment
22
Hot water pipe
23
Igniter unit
24
Led indicator for burner status
25
ON/OFF switch
26
Led indicator for battery charge level
27
Servo valve
28
Output control
29
Gas valve
30
Gas valve for pilot burner
31
Pilot burner injector
32
Gas pipe for pilot burner
33
Temperature limiter
34
Flue gas safety device
6 720 648 592 (2011/06)

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