Notification Appliance Circuits

Installation

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.

•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 .

Key

NACKEY must be inserted with text side facing in

toward center of main circuit board and key into key- Key-slotslot as illustrated to the right. It is keyed to prevent

incorrect insertion.

Top edge of MS-9200UDLS

TB3

TB4

Main Circuit Board

 

 

NACKEY card slot

 

 

JP6

NACKEY Card

NACKEY-PCA

BCLASS

CLASS A

NACKEY -PCA

92nackey.cdr

JP6

Figure 2.7 NAC Configuration Using NACKEY2.5.2 Style Y (Class B) NAC Wiring

4 Style Y (Class B) Notification Appliance Circuits, supervised and power-limited - 4.7 kΩ, ½ watt P/N:71252 UL listed

 

NAC 1

NAC 3

NAC 4

NAC 2

 

Polarized Bells

+

+

+

+

Polarized Bells

Polarized Strobes

+

+

+

+

Polarized Strobes

 

 

Polarized Horns

+

+

+

+

Polarized Horns

Notification Appliance Circuit

 

 

 

 

 

 

 

 

 

polarity shown in alarm state

B B B

B

B B B B

 

 

 

circuit number

+

+

-

-

+

+

-

-

Dummy Load all unused circuit

1

3

3

1

2

4

4

2

TB3

 

 

 

 

TB4

 

 

 

 

9200nacy.cdr

Figure 2.8 NAC Style Y (Class B) Wiring

MS-9200UDLS PN 52750:A 11/04/05

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