6-9
Chapter 6 4100ES SPS Field Wiring
SPS NAC Wiring (continued)
Class B NAC
Wiring
To connect the SPS to appliances using Class B wiring, read the following instructions and
refer to Figure 6-4.
1. Route wire (between 12 and 18 AWG) from the B+, B-, and SHIELD outputs on TB2 of the
SPS to the appropriate inputs on a peripheral notification appliance. Use NAC1, NAC2, or
NAC3.
2. Route wire from the first appliance to the next one. “T” tapping is not allowed. Repeat for
each appliance.
3. Route wire from the last appliance to the EOLR harness (10K ohm, 1/2W: P/N 733-894,
PID# 4081-9008).
4. Repeat steps 1 through 3 for each NAC output you want to use.
5. Leave the factory installed EOL Resistor (10 K Ohm, ½ W; brown/black/orange) on each
unused circuit. The circuit must connect “B+” to “B-” terminals.
Figure 6-4. Class B Wiring
Note:
• Notification appliances are rated per individual nameplate label.
• Maintain correct polarity on terminal connections. Do not loop wires under terminals.
P1
3
2
1
B+ B- A+ A-
TYPICAL
APPLIANCE
KLBDER
NAC1
B+ B- A+ A-
NAC1
B+ B- A+ A-
NAC1
LED1 LED2 LED3
TYPICAL
APPLIANCE
10K 1/2W (133-894)
NAC2 NAC3
DERDER
DERDER
IMPORTANT: Conductors must test
free of all grounds.
12 AWG to 18AWG
BLK
BLK
BLK
4081-9008 EOL Harness
Leave the factory installed
EOL Resistor (10 K Ohm, ½
W; brown/black/orange) on
unused circuits
Ferrite bead
required for RF
immunity to CE
specified levels. Use
kit 4100-5129.
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