Det-Tronics X3301 Multispectrum IR Flame Detector with Pulse Output - Manual (Page 8)

95-8528 11.1 6
figure 3—Q9033 mounting arm without Collar attachment Dimensions in Inches (cm)
(See figure 1 for Correct Detector Orientation .)
pROTECTION agaINST MOISTURE DaMagE
It is important to take proper precautions during
installation to ensure that moisture will not come in contact
with the electrical connections or components of the
system. The integrity of the system regarding moisture
protection must be maintained for proper operation and
is the responsibility of the installer.
If conduit is used, we recommend installing drains,
according to local codes, at water collection points to
automatically drain accumulated moisture. It is also
recommended to install at least one breather, according
to local codes, at upper locations to provide ventilation
and allow water vapor to escape.
Conduit raceways should be inclined so that water will
flow to low points for drainage and will not collect inside
enclosures or on conduit seals. If this is not possible,
install conduit drains above the seals to prevent the
collection of water or install a drain loop below the
detector with a conduit drain at the lowest point of the
loop.
Conduit seals are not required for compliance with
explosion-proof installation requirements, but are highly
recommended to prevent water ingress in outdoor
applications. Units with M25 threads must use an IP66/
IP67 washer to prevent water ingress.
WIRINg pROCEDURE
Wire Size and Type
The system should be wired according to local codes.
The wire size selected should be based on the number
of detectors connected, the supply voltage, and the
cable length. Typically 16 AWG or 2.5 mm 2 shielded
cable is recommended. Wires should be stripped
3/8 inch (9 mm). In some cases where the X3301 is
replacing existing pulse output detectors, the wiring
and power supplies may not be adequate. Consult the
factory for assistance.
Important
A minimum input voltage of 18 Vdc must be
present at the X3301.
The use of shielded cable is required to protect against
interference caused by EMI and RFI. When using cables
with shields, terminate the shields as shown in Figures
6 through 10. Consult the factory if not using shielded
cable.
The “B” (pulse output) and “D” ( oi driver) leads from
each detector should be shielded from the “B” and
“D” leads of all other detectors in order to prevent
false alarms resulting from crosstalk between zones.
It is recommended that the “A” and “C” leads also be
shielded to provide maximum immunity to EMI/RFI. (See
Figures 6 to 10.)
In applications where the wiring cable is installed in
conduit, the conduit must not be used for wiring to other
electrical equipment.
If disconnection of power is required, separate disconnect
capability must be provided.
CaUtIon
Installation of the detector and wiring should be
performed only by qualified personnel.
Detector Mounting
Install the mounting arm assembly on a rigid surface.
The ideal installation surface should be free of vibration
and suitable to receive 3/8 inch or M10 bolts with a
length of at least 1 inch (25 mm). The surface must
also have sufficient capacity to hold the detector and
mounting arm weights (see “Specifications” section).
Refer to the Q9033 Mounting Arm and Collar Attachment
Manual (95-8686) for additional mounting information.
See Figure 3 for dimensions.
13.1
(33.3)
10.6
(27.0)
4.0
(10.2)
4.0
(10.2)
3.0
(7.6)
3.0
(7.6)
4X ø0.42
(1.1)
F2069
NOTE: THIS ILLUSTRATION SHOWS THE
DETECTOR MOUNTED AT THE 10° MINIMUM.
THESE DIMENSIONS WILL CHANGE BASED
ON THE DETECTOR’S MOUNTING ANGLE.