7
95-8723
3.5
placed through the counter bored holes in the
detector flange, secure the detector junction box
to the surface location.
WIRING CABLE REQUIREMENTS
Always use proper temperature rated cabling
type and diameter for input power as well as
output signal wiring. 14 to 18 AWG (.75 - 2.5 mm
2
)
shielded stranded copper wire is recommended.
The field wiring terminal connections are
certified for a single wire in size from 12-24 AWG
(0.2 to 2.5 mm
2,
or two conductors with same
cross section 0.2 to 0.75 mm
2
). The screws must
be tightened down with a torque 4.4 - 5.3 in-
lb (0.5 to 0.6 Nm). The metal housing must be
electrically connected to earth ground.
A minimum of 12 Vdc must be present at the
U5015 to ensure proper operation. The maximum
cable length from power source to U5015 is 2000
feet (610 m). When the U5015 Smoke Detector is
mounted remotely using an STB termination box,
maximum cable length from U5015 to STB is 500
feet (150 m).
WARNING
For field connections, use wires/cables that
are rated at 20°C greater than the maximum
ambient temperature.
NOTE
In applications where the wiring is
installed in conduit, dedicated conduit is
recommended. Avoid low frequency, high
voltage, and non-signaling conductors to
prevent nuisance EMI problems.
JUMPER
Depending on the wiring option that is used,
jumpers may be required. See Table 3 for the
Jumper Usage Guide and Figures 12 to 15 for
wiring examples.
WIRING PROCEDURE
Ensure that all cables are terminated properly.
Conductor insulation should be stripped off with
a bare conductor length of 0.28 inch (7 mm)
maximum. Ensure that cable shield is properly
terminated and that bare shield wire is not allowed
to accidentally contact the metal housing or any
other wire.
Use the following instructions when wiring the
U5015 detector:
1. Slightly loosen the three setscrews located
on the retaining ring (see Figure 7).
Figure 7—Setscrew Location
Figure 6—U5015 Wall Mount
Table 3—Jumper Usage Guide
Wiring
Option
0-20 mA
Relay
1
Used
No jumper
required
Not
Used
No jumper
required
2
Used
No jumper
required
Used
Jumper
required in
terminals 7 &
4 (P5)
3
Not
Used
Jumper
required in
terminals 5 &
4 (P11)
Used
Jumper
required in
terminals 7 &
4 (P5)