Class A Nac Wiring - Simplex XPS Installation Instructions Manual

Class A NAC wiring

To connect the XPS to appliances using Class A wiring, read the following instructions and refer to Figure 11.
1. Route wire (between 12 [3.309 mm²] and 18 AWG [0.8231 mm²]) from the B+ and B- outputs on TB1 of the XPS 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. Repeat for each appliance.
Route wire from the last appliance to the A+ and A- inputs on the same NAC circuit of TB1 of the XPS.
3.
4. Repeat steps 1 through 3 for each NAC output you want to use.
5. Leave the 10k, factory-installed, 1/2 W, brown/black/orange resistor (378-030) on each unused circuit. The circuit must connect B+ to B- terminals.
No external end-of-line resistor is needed for circuits in use.
Note: * Ferrite beads required for CE compliance. Use kit 4100-5129.
page 12
Figure 11: Class A wiring
XPS and XNAC Installation Instructions
574-772 Rev. Q