Bosch ZBR16-3A Series - Page 29

Common Applications of ZBR boilers | 29
6 720 806 992 (2015/03)Greenstar
Fig. 10 Wiring
[1] PCB in heating boiler ZBR..-3A... with FW 200 installed on front
[2] White plug for mains power supply, 120 V AC, 60 Hz
( chapter 7.3.4, page 49)
[3] 120 V AC, 60 Hz
[4] Red plug for external DHW tank ( chapter 7.3.3, page 49)
[5] DHW pump
[6] Black plug for extermnal (system) pump ( chapter 7.3.2,
page 48)
[7] System pump
[8] DPDT Relay
[9] Motorized valve heating zone 2
[10] Motorized valve heating zone 1
[11] 24 V AC transformer
[12] Outdoor temperature sensor
[13] LWCO (Low Water Cut Off, 24V AC Transformer required)
[14] DHW temperature sensor (connection with clear connector)
[15] External supply temperature sensor (connection with white plug)
B
B
F
A
6 720 806 992-04.1O
9
8
7
LZ
NZ
4
2
L
N
NH344556
T T COM
RW
24VAC
F
V
L
N
LS NS
MM
8
12
6
5
4
1
3
7
9
3
11
13
15
14
3
2
10