User's Manual

These instructions do not purport to cover all the details or variations in the equipment de
-
scribed, nor do they provide for every possible contingency to be met in connection wit
h
installation, operation and maintenance. All specifications subject to change without notice
.
Should furhter information be desired or should particular problems arise which are not cov
-
ered sufficiently for the purchaser’s purposes, the matter should be referred to KIDDE-FENWA
L
INC., Ashland, MA 01721. Telephone: [phone]
06-236279-003 Rev AC ©2006 Kidde-Fenwal Inc. Printed in U.S.A.
LHS is a trademark of Kidde-Fenwal, Inc.
connecting cable, or an end-of-line device, is to make the
connection inside a junction box.
1. The sensor cable can be joined using any industry stan-
dard method for connecting copper conductors. Posi-
tive, compression type connectors must be used, such
as wire nuts (3M/Highland H-30 or equal), butt splices
(Panduit BSN18 or equal), or a 2-position terminal block
(Molex/Beau C1502-151 or equal), following the
manufacturer’s installation instructions.
2. Any standard electrical junction box with a cover may
be used. In wet or damp locations, a waterproof box
must be used. The P/N 73-117068-027 Weather-Tight
Connector (or equivalent) must be used to provide strain
relief on the sensor cable where it enters the box. Do
not use “Romex” style cable clamps, as they may crush
the cable, possibly causing a false alarm.
Alternate Method – In-line Splice:
Where permitted by the AHJ, in-line splicing of two lengths
of sensor cable may be permitted. In-line splicing is not rec-
ommended for connecting sensor cable to copper lead-in
wire, interconnecting cable, or an end-of-line device. In-line
splicing is also not recommended if the sensor cable is un-
der any significant tension.
When used for proximity detection, loop the sensor cable,
as the splice area does not provide detection coverage.
1. The sensor cable must be joined using nylon insulated
compression butt splices (Panduit BSN18 or equal).
Offset the two butt splices from each other.
2. Strip the jacket and insulation from each cable as shown
in figure 7.Trim the two conductors with the offset as
shown.
1 1/4” (30 mm)
1/4” (6.4 mm)
1/4” (6.4 mm)
4” (100 mm)
Figure 7. Strip the Sensor Cable
3. Crimp on the two butt splices as shown in figure 8, us-
ing an approved crimp tool (Panduit CT-1550 or equal).
Butt Splice
Figure 8. Crimp the Sensor Cable
4. For dry locations, seal the splice by wrapping electrical
tape (3M/Scotch Super 33+ or equal) around the splice,
following the manufacturer’s instructions. Stretch and
overlap each turn of the tape by about 1/2 its width. The
tape should extend 2” (50 mm) beyond the ends where
the sensor cable jacket was cut. See figure 9.
Wrap over
Butt Splice
2” (50mm)2” (50mm)2” (50mm)2” (50mm) 2” (50mm)2” (50mm)
Figure 9. Seal the Splice
5. For damp or wet locations, seal the splice by wrapping
silicon fusion tape (Tyco Electronics/Amp 608036-1 or
equal) around the splice, following the manufacturer’s
instructions. The tape should extend 2” (50 mm) be-
yond the ends where the sensor cable jacket was cut.
See figure 9.
TESTING
Functional testing of the LHS sensor cable should follow
the guidelines for fixed-temperature non-restorable line type
heat detectors in Chapter 7 of NFPA-72, National Fire Alarm
Code. Consult with the AHJ for additional testing require-
ments that may apply to your specific installation. Functional
testing verifies the electrical operation of the sensor cable
and does not require a heat source.
1. Place a short across the end-of-line (EOL) device for
an LHS zone, and verify that the zone goes into alarm.
2. (If required by the AHJ) Remove one leg of the EOL for
an LHS zone, and verify that the zone goes into trouble.
3. (If required by the AHJ) Disconnect both conductors of
the LHS zone from the FCP. Place a short across the
EOL. At the FCP end of the zone, measure and record
the total loop resistance of the sensor cable. Compare
it to the acceptance test value.
MAINTENANCE
The LHS sensor cable requires no maintenance, other than
visual inspection to insure the integrity of the installation.
Damage To The Sensor Cable:
If the sensor cable is physically damaged, the conductors
may short together, causing an alarm. Locate the short cir-
cuit by visual inspection, by using an ohmmeter (comparing
to the value obtained during the acceptance test), or by us-
ing a tone generator & probe set. Splice in a new piece of
sensor cable. Replace at least 3 ft. (1 m) of the sensor cable
on both sides of the damaged piece.
After A Fire Event:
As the LHS sensor cable is non-restoring, it must be re-
placed after detecting a fire. If the entire zone is not being
replaced, splice in a new piece of sensor cable, extending
at least 10 ft. (3 m) beyond the affected section.