Specifications

Page 61
FIREFINDER SERIES II INSTALLATION, COMMISSIONING &
OPERATION
11.14 Warning Signs
Description
The warning signs are driven by a 2 wire system and may be configured for single or dual stage
operation.
An on-board buzzer provides an audible warning which may be disabled by removing JP3.
External evacuation devices, e.g. sounders may be connected to TB3 of the input termination board.
An external mute push-button (N/O contacts) may also be connected to Term 3 on the warning sign
PCB to enable the user to silence the internal buzzer and evacuation device. Inserting JP4 disables
this function.
Enclosures
The IP50 is a metal enclosure. The facia surround is fitted by removing the screw on the left hand
side of the enclosure and pulling it away to the left. The facia sign is fitted in place and the tabs bent
over to hold it in place. Two holes in the backpan of the chassis allow for mounting.
The IP65 ABS enclosure has 10 screws, tightened evenly but not over tightened, hold the facia in
place. 4 holes in the backpan allow for mounting.
Specifications:
Operational Voltage
27VDC
Power Consumption Continuous
At 24VDC 55mA Stage 1
At 24VDC 140mA Stage 2 (100mA Muted)
IP Ratings
IP50 190mm (H) x 315mm (W) x 73mm (D)
IP65 200mm (H) x 295mm (W) x 65mm (D)
Environmental
-10˚C to +55˚C Dry heat
+40˚C @ 0 to 93% Relative Humidity
Installation
 Remove the backpan from the enclosure to ensure it is not damaged while mounting the
enclosure.
 Bring the cabling into the enclosure by removing the knockouts most appropriate for the
installation.
 Mount the enclosure, remount the back pan, set the configuration and then cable as per the
following diagram.
 ENSURE THE AGENT IS ISOLATED and test from the Agent Release Module.
Cabling
Term 3 (Buzzer Mute)
BUZZER MUTE Normally Open (N/O) Push Button Switch (Optional)
INPUT
Term 4 ( Single pair polarity reversing / 2 Stage Input )
Stage 1
0V – 24VDC
Stage 2
24VDC – 0V