Class B Wiring - Simplex 4007-9101 Installation Manual

3. Route the wire from the last appliance to the A+ and A- inputs on the same NAC circuit of the power supply.
4. Repeat steps 1 through 3 for each NAC output you want to use.
5. Leave the 10 KOhms, 1/2 W, brown/black/orange resistor (378-030) on each unused circuit. No external end-of-line resistor is needed for circuits in
use.

4.3.4 Class B wiring

NOTE:
The Class B wiring style is set up in the ES Panel Programmer. See the 4007ES Programmer's Manual (579-1167), for more information.
To connect the power supply to appliances using Class B wiring, complete the following steps:
1. Route the wire from the B+, B- outputs on TB2 and TB3 of the power supply to the appropriate inputs on a peripheral notification appliance. Use
NAC1, NAC2, NAC3, or NAC4.
2. Route the wire from the first appliance to the next. T-tapping is not permitted. Repeat this for each appliance.
3. Route the wire from the last appliance to the EOLR harness (10KOhms, 1/2 W: P/N 733- 894).
4. Repeat steps 1 through 3 for each NAC output you want to use.
5. Leave the factory installed EOL resistor (10 KOhms*, 1/2 W; brown/black/orange) on each unused circuit. The circuit must connect B+ to B-
terminals.
6. Document the EOL value in the panel for each circuit.
*If using a 4007ES hybrid panel, keep the original value and set the ES Panel Programmer accordingly.
Page 15
Fig 12: Class A NAC wiring
Fig 13: Class B NAC wiring
4007ES and 4007ES Hybrid Fire Alarm Systems Installation Manual
579-1102 Rev H