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DESIGN REFERENCE MANUAL

24VDC

(-)

(+)

Smoke Damper Schematic

(If dampers are directly controlled by the fire alarm system.)

SLC

End of Line Relay

Example shown is a Notifier FRM Relay.

FRM Relay

Remote indicator light. “Select-a-switch” model SL53413- 6-BG (Light powered when damper closes.*)

9

C

8

NC

7

NO

NO

NC

6 5

C

1 2 3 4

(-)

(+)

*Exception: Elevator hoistway damper.

Neutral

Damper blade “end- switch” contacts

*Note: Seperate circuit w/locking breaker for indicator lite circuit.

To end switches To damper motor

Smoke Damper Motor

NC C

NO

(2) 120VAC Circuits

SOU fuse at each damper.

MR101 or MR201 relay*

*Note: This relay can feed several dampers.

  • O

    24 120 230

Brian O’Harra University of Iowa Fire Safety Department 319-335-6131

Design & Construction Services The University of Iowa (1/04)

Fire Alarm and Detection Systems 2.13-7

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