Pentair TRACETEK TTDM-128 Installation Instructions Manual page 8

CONNECT THE SENSING CABLE
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If the TTDM-128 will be used to monitor a sensor directly, follow these instructions to connect
the sensor to the TTDM-128. If the TTDM-128 is being used only as a network master, skip to
Connecting the TraceTek Network.
prepare sensing cable.
Ensure that the sensing cable has been installed and tested in accordance with the instructions
provided with the cable.
Make connections.
WARNING:
Shock hazard. Disconnect from live voltage prior to opening enclosure door.
• Confirm that power to the unit has been shut off.
• Open the enclosure door.
• Feed the end of the TraceTek Leader Cable (or Jumper Cable) through the gland plate
adapter/bushing into the enclosure.
• Remove the sensor cable plug
• Connect the four color-coded wires to the Sensor Interface plug.
Important: Observe the color coding. If wires are not connected to the proper terminals, the
leak detection system cannot operate properly.
• Insert the sensing cable plug back into the socket on the Sensor Interface Board

SENSOR CABLE
PL
Install zener barrier, if applicable.
When sensing cable will be located in Class I, Division 1 (Zone 0 or Zone 1 in Europe) hazardous
locations, approval agencies require that the sensing cable be protected with a zener barrier
between the sensing cable and the TTDM-128 module. Contact TraceTek to select the proper zener
barrier.
When installing a zener barrier, wire it in accordance with the instructions provided with the kit.
Ordinary Area
TTDM-128
TRACETEK
Zener
barrier
Leader or jumper cable
EN-TraceTekTTDM128-IM-H57341 04/16
from the socket on the sensor interface board
cn
Black
Yellow
Green
Red
Class I, Division 1
(Zone 0 or Zone 1 in Europe)
Hazardous Location
Sensing cable
Jumper cable
br
.
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