95-8704
6
2.7
• Although IR detectors are less affected by smoke
than other detectors, the X3301 should not be
placed where rising combustion products can
obscure its vision. If smoke is expected before
fire, smoke or other alternative detectors should
be used in conjunction with the X3301. For
indoor applications, if dense smoke is expected
to accumulate at the onset of a fire, install
the detector on a side wall at least a few feet
(approximately 1 meter) down from the ceiling.
• If possible, fire tests can be conducted to verify
correct detector positioning and coverage.
• For ATEX/IECEx installations, the X3301 Flame
Detector housing must be electrically connected
to earth ground.
DETECTOR ORIENTATION
Refer to Figure 2 and ensure that the
o
i
plate
will be oriented as shown when the X3301 is
installed and sighted. This will ensure proper
operation of the
o
i
system and will also minimize
the accumulation of moisture and contaminants
between the
o
i
plate and the viewing windows.
IMPORTANT
If removed, the
o
i
plate must be securely
tightened to ensure proper operation of
the
o
i
system (40 oz./inches [28.2 N
.
cm]
recommended).
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 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, 2.5
mm
2
shielded cable is recommended. Wires should
be stripped 3/8 inch (9 mm). A minimum input
voltage of 18 Vdc must be present at the X3301.
NOTE
Refer to “Power Consumption” in the
“Specications” section of this manual.
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 7 through 12
and Figure 15. Consult the factory if not using
shielded cable.
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.
13.1
(33.3)
10.6
(27.0)
(10.2)
4.0
(10.2)
3.0
(7.6)
3.0
(7.6)
4X ø0.42
(1.1)
NOTE: THIS ILLUSTRATION SHOWS THE
DETECTOR MOUNTED AT THE 10° MINIMUM.
THESE DIMENSIONS WILL CHANGE BASED
ON THE DETECTOR’S MOUNTING ANGLE.
Figure3—Q9033 Mounting Arm without Collar Attachment Dimensions in Inches (cm)
(See Figure 1 for Correct Detector Orientation.)
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