Document #15668 Rev. I 04/20/98 P/N 15668:I
43
The Control Module
NFPA Style Y Notification Appliance Circuit (Utilizing C304 Module)
All circuits are supervised and power-limited.
FIGURE 2-25:
Style Y NAC using C304
1 2 3 4 5 6
T
B
6
A B B+ A+ B- A-
Shield
1 2 3 4 5 6
T
B
4
+ - + - + -
MS-9200
SLC (+) TB6-3
SLC (-) TB6-5
24V (+) TB4-1
24V (-) TB4-2
+
+
-
-
C304
To Next Device on Loop
+
-
CAUTION! Do not loop wiring
under any terminals. Break wire
run to maintain supervision.
Resettable 24 VDC
4-wire smoke
detector power
(300 mA max.)
UL listed Power Supervision Relay
(must be wired as last device on
loop as shown).
24 VDC Notification Appliance
End-of-Line Resistor 47K ohm, ½ watt resistor
(N-ELR in Canada)
Loop Out
+
+
-
-
+
+
-
-
Note: If more than one C304 NAC is provided,
install the power supervision relay after the last
notification appliance.
24 VDC Notification Appliance
24 VDC Notification Appliance
-
+
+
-
-
-
+
+
3
4
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