Bosch ZBR 42-3 A NG User Manual

Commissioning
Greenstar – 6721822579 (2021/01)
50
8 Commissioning
Fig. 62 Overview of the controls
[1] Emissions test button
[2] Service button
[3] Burner operation indicator lamp
[4] ON/OFF power switch
[5] Key pad lock
[6] ECO button
[7] Reset button
[8] Display
[9] Automatic air vent (ZWB...-3A combi boilers only)
[10] Boiler water pressure gauge
[11] DHW thermostat
[12] Safety relief valve discharge hose
[13] Condensate drain hose
[14] Heating return pipe
[15] Cold water pipe (ZWB...-3A combi boilers only)
[16] Gas pipe
[17] DHW pipe (ZWB...-3A combi boilers only)
[18] Supply pipe
[19] Boiler high limit dial
eco
reset
1
2
3
4
5
6
7
8
9
11
10
12
13
151618
19
14
6 720 641 933-25.1O
17

Bosch ZBR 42-3 A NG Specifications

General

Brand	Bosch
Model	ZBR 42-3 A NG
Category	Boiler
Language	English