Wiring Nacs And Idcs For Class A - Fire-Lite MS-2 User Manual
Fire alarm control panel
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Also See for MS-2:
- Owner's manual (21 pages) ,
- Instruction manual (56 pages) ,
- User manual (56 pages)
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Class B (Style B)
IDC - 4.7 K
½ watt ELR
(supervised and
power-limited)
Class A (Style Z) NAC
(supervised and power-limited)
Polarized
Polarized
Polarized
Circuit polarities
shown in alarm
condition
B+ B-
NAC 1
2.6.1.2 Wiring NACs and IDCs for Class A
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IMPORTANT!
All devices must be
Ω
within 20 feet of the
resistor
Class A portion of
P/N:71252
the circuit and
wiring must be in
conduit.
Smoke
Bell
Strobe
Pull Station
Horn
1.2 K
Ω
½ watt
Heat
In-Line
resistor
P/N:75579
B+
B-
B+
NAC 2
ZONE 1 ZONE 2
A+
A-
A+
A-
CLASS A CLASS A
CLASS A CLASS A
NAC 1
NAC 2
CAC-4 Class A Converter Module
Figure 2.11 Wiring NACs and IDCs for Class A Operation
Class A
(Style D) IDC
Combo Waterflow
& Supervisory
20KΩ, ½ watt ELR
resistor P/N:75477
(supervised and
power-limited)
Tamper
Smoke
Tamper
Pull Station
Waterflow
Heat
B-
B+
B-
B+
B-
ZONE 3 ZONE 4
A+
A-
A+
A-
A+
CLASS A CLASS A
ZONE 1
ZONE 2
ZONE 3
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Class A
(Style D) IDC
(supervised and
power-limited)
Dummy load all unused
circuits - 4.7 K
Ω
½ watt ELR resistor
(P/N: 71245)
MS-4
Circuit Board
B+
B-
A-
A+
A-
ZONE 4
0606 31 %
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