8 | nVent.com
Complete System Connections and Layout
A. TT500X-HS is available in bulkform, cut to length in the field
and joined using connector kits–or it can be obtained in
standard or custom cut lengths with connectors attached in
the factory. Each cable has a female metal connector on one
end and a male metal connector on the opposite end. Cable
sections plug together like extension cords.
B. (Optional) A branch connector (TT-MBC-MC-TW) is used
to connect and branch “T” lines. The branch connector
has one male connector and two female connectors. For
mapping purposes, the cable connected to the center leg of
the branch connector will be counted first, then the distance
measurements will continue from the second female
connector and continue along the rest of the system. A dead
band of 16 ft (5 m) is inserted at the beginning of each branch
to avoid any location ambiguity.
C. (Optional) It is permissible to have multiple sub-branches as
needed to fully trace the pipe system.
D. Install an end termination (TT-MET-MC) at the end of the main
line and each branch line. (Note: A good check on the system
design and bill of materials is that the total number of end
terminations installed in the system should equal the number
of branch connectors plus one).
E. (Optional) Install jumper cables (TT-MJC-xx-MC-BLK) as
needed if they are to connect sensing cable sections in
separate areas. Jumper cable is available in various pre-cut
and terminated lengths and is also available in bulk form
for long distance runs between the sensor cable and alarm
module location.
F. Install a leader cable (TT-MLC-MC-BLK) between the sensor
cable and the alarm module location. The factory standard
length of leader cable is 12 ft (4 m). It has a female metal
connector on one end and four tinned leads on the opposite
end for connection at the alarm module terminal block. In
some installations the distance between the alarm module
and the start of the sensor cable run will be much greater
than 12 feet. In those cases a simple solution is to purchase
a jumper cable of sufficient length, then cut off and discard
the male connector and any extra cable. Bulk jumper cable
and splicing kits are also available for lengths that exceed the
longest available standard jumper cable.
G. Use fastening straps to neatly coil and secure any excess
sensor cable, jumper cable, branch connectors, etc.
Modular jumper cable
(TT-MJC-xx-MC-BLK)
in conduit
RS-485 twisted pair
Note:
• Drawing not to scale.
• Not shown: heat-shrinkable tube
to cover each connection.
TraceTek alarm module
(several models available;
TTDM-128 alarm and
locating module is shown)
CH2
3 CGN
SUN
12 0
4 08
ACA
C
SHLD
RS–
RS+
AC AC
SHLD
RS–
RS+
AC AC
RED
GRN
YEL
BLK GND
TTSIM-1
Leak Location Module
RATING: 24V
ac
±
10%
50/60 Hz
3VA
Network
Addr
ess
8910
11
12
8910
11
12
TTSIM-1
(Sensor
interface
module)
TT500X-HS
in slotted pipe
240 m Max.
Do not exceed 240 m Max.
between pull boxes
TT500X-HS
in slotted pipe
TT500X-HS
in slotted pipe
Modular end termination
(TT-MET-MC)
Pull Box
TRA
CETE
K
