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Notification Appliance Circuits
• Style Z (Class A) - install NACKEY into JP6 with
Class A pointing down toward circuit board as
illustrated to the right.
• Style Y (Class B) - install NACKEY into JP6 with
Class B pointing down toward circuit board .
NACKEY must be inserted with text side facing in
toward center of main circuit board and key into key-
slot as illustrated to the right. It is keyed to prevent
incorrect insertion.
Top edge of MS-9200UDLS
Main Circuit Board
NACKEY card slot
Figure 2.7 NAC Configuration Using NACKEY
4 Style Y (Class B) Notification Appliance Circuits, supervised and power-limited - 4.7 kΩ, ½ watt P/N:71252 UL listed
Polarized Bells
Polarized Strobes
Polarized Horns
Notification Appliance Circuit
polarity shown in alarm state
circuit number
MS-9200UDLS PN 52750:A 11/04/05
2.5.1 Configuring NACs
The Notification Appliance Circuits on the main circuit board are configured for Style
Y (Class B) or Style Z (Class A) by properly orienting the NACKEY card in JP6 which
is located at the top of the main circuit board near the NAC terminal blocks TB3 and
TB4. The default configuration is for Style Y (Class B). Refer to Figure 2.7 for
information on installing the NACKEY card.
Key
Key-slot
TB3
TB4
JP6
2.5.2 Style Y (Class B) NAC Wiring
NAC 1
NAC 3
+
+
+
+
+
+
B
B
B
B
-
-
+
+
-
1
1
3 3
TB3
TB4
Figure 2.8 NAC Style Y (Class B) Wiring
NACKEY Card
CLASS A
NACKEY -PCA
NAC 4
NAC 2
Polarized Bells
+
+
Polarized Strobes
+
+
Polarized Horns
+
+
B
B
B
B
-
-
+
+
Dummy Load all unused circuit
2
4 4
2
Installation
JP6
33
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