Fire Fighting Enterprises FIRERAY 2000 (Legacy) - Manual (Page 4)

Fireray 2000 Installation Guide 22318.00.R 25.08.05
4
Installation
Pre-installation at Ground Level
Confirm that all parts have been supplied as listed in the parts list. See page 8.
Control Unit
1. There are 20mm knockout holes on all side faces for fixing of cable glands. Four 7mm fixing holes are
located on the rear surface of the box, which are to be used to locate the Control Unit to the building
structure.
2. Select the required alarm threshold (See fig. 7 for switch configuration settings). The factory default setting
is 35% this should be adequate for most environments, if the Detector is to be installed into an exceptionally
dirty environment change the threshold to 50%.
3. Select latching or auto reset for the alarm relay. The factory default setting is auto reset, change this option
if required (See fig. 7 for switch configuration settings).
4. Select the AGC compensation setting; to comply with BS5839 leave the switch open, this is the default
factory setting. At the last AGC stage the Fireray will signal a fault, but in the event of any further signal loss
reducing the signal to the selected sensitivity level will result in a fire alarm (See fig. 7 for switch
configuration settings). If the switch is closed, at the last AGC stage the Fireray will signal a fault but the fire
relay will be inhibited.
5. Mount the Control Unit at ground level to a flat surface, preferably a wall, using the fixing holes provided.
Ease of access is essential for system commissioning and “follow on” service calls.
6. Terminate the field wiring (See figs. 5 & 6 for wiring instructions).
Transmitter and Receiver
1. Confirm that the Transmitter Power is set to maximum (See fig 3).
2. Locate positions for both Transmitter and Receiver using the positioning methods described earlier.
3. Ensure there is a clear line between the Transmitter and the Receiver. No more than 3 metres of the beams
path should be within 500mm of any wall or partition. Make sure that no single object is within 300mm of the
centre of the beam.
4. Fix the right angle brackets provided to a solid structure, which is not effected by thermal and or mechanical
movement.
X Do not fix to plaster board or cladded walls as these surfaces do and will move W
4. Mount the Transmitter and Receiver heads using the ‘U’ brackets provided onto the right angle brackets
(See fig 3 for details).
5. Wire the Receiver to the Control Unit using not less than 5 metres and no more than 100 metres of good
quality 3 core screened cable, make sure all junction boxes used are metal and terminated with the cable
screen. At the Control Unit terminate the screen at the entry gland (See fig 6 for details)
Do not terminate the screen inside the Control Unit.
Alignment
Receiver
1. Mechanically align the Receiver as accurately as possible (by eye) to the Transmitter.
2. Apply power to the Control Unit and check the voltage is within the operating parameters of 11.5 – 28 Volts.
Transmitter
1. Mechanically align the Transmitter as accurately as possible (by eye) to the Receiver.
2. Wire the Transmitter to a power supply (See fig 6 for details).
3. Apply power to the Transmitter and check the voltage is within the operating parameters of 11.5 – 28 Volts.