Notification Appliance Circuits; 1: Style Y (Class B) Nac Wiring - Fire-Lite MS-9200UDLS Manual

Installation

2.5 Notification Appliance Circuits

The control panel provides four Style Y (Class B) or four Style Z (Class A) NACs (Notification
Appliance Circuits) when using the optional ZNAC-92 Class A converter module. Each circuit is
capable of 2.5 amps of current. Total current in alarm for all external devices cannot exceed 6.0
amps (refer to "Calculating the System Current Load" on page 159). Use UL listed 24 VDC notifi-
cation appliances only. Circuits are supervised and power-limited. Refer to the Device Compatibil-
ity Document for a listing of compatible notification appliances. The NACs, which are located on
the main circuit board, may be expanded via the FCPS Series field charger/power supplies.
The following sections describe the configuration and wiring of Style Y and Style Z Notification
Appliance Circuits on the MS-9200UDLS main circuit board.
2.5.1 Style Y (Class B) NAC Wiring
4 Style Y (Class B) Notification Appliance Circuits, supervised and power-limited - 4.7 k, ½ watt P/N:71252 UL listed
Polarized Bells
Polarized Strobes
Polarized Horns
Notification Appliance Circuit
polarity shown in alarm state
circuit number
34
NAC 1
NAC 3
TB3
TB4
Figure 2.8 NAC Style Y (Class B) Wiring
NAC 4
NAC 2
Polarized Bells
Polarized Strobes
Polarized Horns
Dummy Load all unused circuit
MS-9200UDLS Series Manual — P/N 52750:H 4/14/2014
Notification Appliance Circuits