2-Wire Smoke Wiring (D125B) - Bosch B6512 Installation Manual

Control panels
Callout ᅳ Description
5 ᅳ 1.8 kΩ EOL resistor (P/N: F01U009011) (included with the module)
6 ᅳ Smoke reset wire
7.4

2-wire smoke wiring (D125B)

PTC2
R2
R21
R9
R10
R8
TB1/J1
D125B
1 2 3
SWITCH ZONE ZONE
POWER B A
Callout ᅳ Description
1 ᅳ Switched auxiliary power from Output A (NC)
control panel
2 ᅳ Connection from an on-board point on the control
panel to Zone B
3 ᅳ Connection from an on-board point on the control
panel to Zone A
4/5 ᅳ Connection to common on the control panel (one
connection only)
6 ᅳ Supervised smoke detector to B LOOP negative
1 You can also use Output B or C in conjunction with a D133 or D134 relay module.
Bosch Security Systems B.V.
PTC1
R14
U1
RV1
RV4
RV3
4 5 6 7 8 9 10
PANEL B- A- B+ A+ EARTH
COMMON LOOP LOOP LOOP LOOP GND
R1
R11
R12
R22
RV2
18VAC + BAT -
Callout ᅳ Description
1 of of the 7 ᅳ Supervised smoke detector to A LOOP negative
8 ᅳ Supervised smoke detector to B LOOP positive
9 ᅳ Supervised smoke detector to A LOOP positive
10 ᅳ Earth ground
11 ᅳ Output A jumper (under cover) set to AUX PWR
UL Installation manual
System wiring diagrams | en
NO C NC COM AUX R Y G B 1 C O M 2 3 COM 4 5 COM
OUTPUT A PWR A B COM
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2019-12 | 10 | F.01U.287.185
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7 COM 8
6 7 C O M 8