FFE Fireray 100RU Technical Bulletin - page 4
22318.10.03 15.09.05
3
4. Installation.
4.1. Pre-Installation At Ground Level.
Confirm that all parts have been supplied as listed in the parts list. See page 9.
Select the required Alarm threshold using switches 3 and 4 (See fig. 4. 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%.
Do not use the 25% Alarm threshold setting for the 100RU, as this does not conform to UL268.
Switch 1 selects latching or auto reset for the Alarm relay. The factory default setting is auto reset;
change this option if required. See fig. 4.
The Detector Head Assembly is now ready for installation. If switches 1 to 4 require resetting after
installation, a power down reset is required (entering into Alignment Mode can also be used as a reset).
Do not install in locations where nominal ambient temperatures exceed 100
°F.
4.2. Detector Head Assembly Installation.
Remove the outer cover before installation; this is only to prevent the cover becoming dislodged during
handling.
Do not mount on plasterboard or cladded walls as these surfaces do, and will move.
Determine the position of the Head Assembly, which must be mounted on a solid structure. Ensure that
there is a clear line of sight to the proposed position of the prism.
Using the template provided mark and install all 4 fixing points to the structure. The rear mounting plate
of the Detector Head Assembly is provided with 4 keyhole slotted apertures to allow for easy installation
onto the 4 fixing points.
Replace the outer cover.
Terminate the field wiring. See section 8.
4.3. Prism Installation.
Due to the principle of the detector i.e. reflective, the prism must NOT be mounted on glass or a polished reflective
surface.
Mount the Prism on a solid structure between 15 to 160 feet (Fireray 50RU), and 160 to 330 feet (Fireray 100RU)
directly opposite the Detector.
50RU =
100RU =
1
Prism
4
Prisms
Ensure that there is a clear line of sight to the Detector, taking care that no moving objects i.e. doors, mechanical
lifting equipment etc. Which will interfere with the light path between the Detector and Prism.
Note: On ranges of ≥15 feet and ≤160 feet use a 50RU.
On ranges of ≥160 feet and ≤330 feet use a 100RU.