Bosch B8512G - 2-Wire Smoke Wiring (D125 B)

104 en | System wiring diagrams Control Panels
2018.07 | 10 | F.01U.303.996 Installation Manual Bosch Security Systems, Inc.
Cable capacitance Overall cable length Cable capacitance Overall cable length
pF/ft ft m pF/ft ft m
< 17 7500 2286 27 5185 1580
18 7500 2286 28 5000 1524
19 7350 2240 29 4828 1472
20 7000 2134 30 4700 1433
21 6666 2032 31 4516 1376
22 6363 1939 32 4400 1341
23 6086 1855 33 4242 1293
24 5800 1768 34 4100 1250
25 5600 1707 35 4000 1219
26 5385 1641 36 3800 1158
Table18.9: Maximum cable length
Notice!
Use unshielded cable only.
Maximum capacitance of 140nF (140,000 pF) per system. Contact the wire manufacturer for
the capacitance ratings of the wire being used.
18.6 2-wire smoke wiring (D125B)
CCD 0x - 0xxxx - 000 © RADIONICS INC.
D125B
1992
1
SWITCH
POWER
10
EARTH
GND
2
ZONE
B
4 5
PANEL
COMMON
3
ZONE
A
6
B-
LOOP
7
A-
LOOP
8
B+
LOOP
9
A+
LOOP
R21
R9
R10
R14
R11
R12
R22
RV2
RV3
RV4
R8
RV1
TB1/J1
R3
C1
R7
C3
C2
R13
R4 R5 R6
U1
PTC2
PTC1
R1
R2
D125B
USB POWER
STATUS
L
I
N
K
ETHERNETUSB
B
A
S
E
T
11
13 14
16
17
19
20
22
12
15
18
21
Quick Flash: Low
BATTERY STATUS
Slow Flash:
Charging
Off: Normal
On: Missing
Low 12.1 VDC
Load Shed 10.2 VDC
EARTH GROUND
COMMON
BATTERY ( - )
+ AUX POWER
BATTERY ( + )
CLASS 2
16.5 VAC 40 VA 60 Hz
TRANSFORMER
10
9
8
7
6
5
4
3
2
1
OUTPUT
B (2)
OUTPUT
A (1)
OUTPUT
C (3)
Do not connect
to a receptacle
controlled by
a switch.
Point 5 Point 6
Point 3 Point 4
Point 1 Point 2 Point 7 Point 8
ON-BOARD POINTS
1 k End-of-line-Resistors Required (P/N 15093130-004),
WARNING!
Multi-Battery
installation requires
Model D122 or D122L
Dual Battery Harness.
Improper installation
can be a fire hazard .
WARNING!
Incorrect wiring will
damage this
equipment.
Devices powered by
any output must be
supervised.
POWER SUPPL
The Power S
refer to the B
The system is intended
panel has been approv
RevPol.
Battery: Replace every 3 to
5 years with one or two
Model D126 or D1218 12V
Lead Acid Batteries.
WARNING!
To prevent risk of shock,
disconnect AC power and
communication lines before
servicing.
All exte
Require
Voltage Ranges: Open 3.7 - 5.0 VDC,
Owner I
be removed by
POINT 1 COM POINT 2 POINT 3 COM POINT 4 POINT 5 COM POINT 6 POINT 7 COM POINT 8
3
1
2
4
5
6, 8
7, 9
10
Callout ᅳ Description Callout ᅳ Description
1 ᅳ Switched auxiliary power from relay C of the control
panel
6 ᅳ Supervised smoke detector to B LOOP negative
2 ᅳ Supervised connection to Zone B power from an on-
board point of the control panel
7 ᅳ Supervised smoke detector to A LOOP negative