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3.3
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 14 AWG (2.08 mm
2
) or 16 AWG (1.31
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 X3302.
NOTE
Refer to “Power Consumption” in the “Specifications”
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 14. 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.
CaUtIon
Installation of the detector and wiring should be
performed only by qualified personnel.
Detector Mounting
Install the swivel mounting bracket assembly on the wall.
The installation surface should be free of vibration and
suitable to receive 1/4 inch (M6) screws with a length of
at least 1 inch (25 mm), and have sufficient capacity to
hold the detector and bracket weight. Refer to Figure 3
for dimensions.
Relay and 4-20 mA Output Models
Follow the instructions below to install the X3302.
Make field connections following local ordinances
1.
and guidelines in this manual.
Figure 4 shows the wiring terminal strip located
–
inside the detector’s integral junction box.
Figure 5 shows the wiring terminal identification for
–
the X3302 detector.
Figure 6 shows an EOL resistor installed within the
–
integral wiring compartment of the detector (refer to
“EOL Resistors” for details).
Figures 7 and 8 provide examples of typical
–
installations with a X3302 wired to a fire alarm
panel.
If the detector is equipped with a 4 to 20 mA output,
–
refer to Figures 9 through 12.
13,1
(33,3)
10,3
(26,2)
4,0
(10,2)
4,0
(10,2)
3,0
(7,6)
3,0
(7,6)
4X ø0,42
(1,1)
C2069
Figure 3—Q9033 Mounting Bracket Dimensions in Inches (cm)
(See Figure 1 for Correct Detector Orientation.)
