Johnson Controls MPS-24A - Typical NFPA Style D Initiating Device Circuit Page

Installation—Installing the FC-2000 37
Figure 27: Style D Field Wiring of IZM-8 Initiating Zone Module
with IZE-A Expander
Notes:
1. Initiating device circuits are supervised, power limited, and may be
connected to limited-energy cable. Initiating devices include
non-coded manual pull stations, heat detectors, photo and ion
detectors, and waterflow alarm and waterflow supervisory devices.
Connect waterflow alarm devices to a dedicated circuit, programmed
for waterflow option. Connect N.O. waterflow supervisory devices to
a dedicated zone programmed for supervisory operation. Terminal
block will accept 12 to 22 AWG wire. Initiating circuit current will
ensure alarming of one 2-wire detector only.
Typical NFPA
Style D Initiating
Device Circuit
IZB
Jumper all unused
circuits as shown.
UL Listed 2-wire Smoke Detector (Note 2)
Manual Pull Station
Heat Detector
nfpa-d
1 2 3 4 5 6 7 8
A+ A-
1 2 3 4 5 6 7 8
A+ A-
1 2 3 4 5 6 7 8
B+ B-
1 2 3 4 5 6 7 8
B+ B-
a+a- a+a- a+a- a+a-
A B C D E F G H
b+b- b+b- b+b- b+b-
b+b- b+b- b+b- b+b-
a+a- a+a- a+a- a+a-
Typical NFPA Style D
Initiating Device Circuit
PUSH IN
THEN
PULL DOWN
FIRE
A
INITIATING
ZONE
RED-ALARM
YELLO W- TR OUBLE
DISPLAY PROGRAM
MODULE
TYPE
LAMPS
SWITCH
INITIATING
ZONE
RED-ALARM
YELLO W- TR OUBLE
DISPLAY PROGRAM
MODULE
TYPE
LAMPS
SWITCH
E
B
F
C
G
D
H