4/20
Fixing Instructions Doc. version 2
FV400
Triple IR Flame Detectors
Fitting the Weather hood
1 Loosen the three detector fixings and slide the
detector forward.
2 Position the central slot of the Weather hood
over the top fixing and slide it downwards
behind the detector.
3 Ensure that the two slots at the bottom of the
Weather hood slide over the two lower fix-
ings.
4 Tighten the three detector fixings.
A small adjustment may then be necessary to the
detector orientation.
Removal of the Weather hood
The Weather hood can be removed without
having to completely remove the detector
from the mounting bracket.
1 Loosen the fixings.
2 Slide the Weather hood in the upward direc-
tion away from the detector.
Detector Wiring
Recommended Cable Types
The cable selected for interconnection to the con-
trol equipment should meet the requirements of
any national codes (for example, BS5839) or rele-
vant approval bodies.
Cables should normally have a cross sectional
area of at least 1 mm
2
for solid conductors or
0.5 mm
2
for stranded conductors.
Multicore cables are required that must have an
overall screen and drain wire that are terminated
inside the detector using the EMC clamp. The
signals from the different interfaces can be freely
mixed together and do not need an individual
screen for each interface.
Any cabling and conduits must be chosen and
installed to meet the local safety (flameproof)
requirements and standards.
Cable temperature rating must allow for an
increase in the enclosure temperature of 20°C
above ambient for non-camera models and 25°C
for models with a camera.
Cable Routing
It is important to route cables to minimise any
coupling effects. Ensure that the detector cables
are not run in the same conduit or trunking as
heavy power cables.
The wiring between the detectors and the control
equipment must be mechanically protected to
meet the local standards. Additionally, it should
be sufficiently flexible to allow alignment of the
detector to be adjusted to suit the area protected.
To meet the mandatory EMC requirements of EN
61000-6-3 for emissions and EN 50130-4 for sus-
ceptibility, it is necessary to terminate the
screening of the cable through 360° at the detec-
tor cable gland and ensure that the detector is
solidly bonded to a good local earth.
The EMC clamp provided must be fitted to
ensure that the cable screen is correctly termi-
nated inside the detector.
CAUTION
Detectors must be appropriately
earthed to the required local standards.
Note
Wherever the detector cables need to
cross-over heavy power cables, ensure
that the cross-over is made at right
angles.
