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G2 LHD-INT Installation Manual

Digital linear heat cable interface
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LHD-INT & LHD-EOL
Digital Linear Heat Cable Interface

Introduction

This guide gives an overview of the installation of the digital linear heat cable interface and end of
line unit. There are 2 distinct parts; LHD-INT and LHD-EOL but they operate as a pair. The units
are a universal unit and should operate with most digital linear heat cables available on the market.
However we supply and have tested these units exclusively with the LHDC supplied by PATOL.
The purpose of the 2 units is to act as an interface between the fire control equipment and the digital
linear heat cable. This allows for a flexible cable to be routed to the initial position of the digital
linear heat cable and then for end to end monitoring and testing between the LHD-INT and LHD-
EOL. At the INT position the status of the cable can be seen by the 3 LED status indicators and by
pressing the two buttons on the EOL unit a fault and fire condition can be simulated without the
need to open either terminating enclosure.
LHD-INT & LHD-EOL Installation Guide
Page 1
Rev.1.7 ©G2 Security Pty Ltd

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Summary of Contents for G2 LHD-INT

  • Page 1 This guide gives an overview of the installation of the digital linear heat cable interface and end of line unit. There are 2 distinct parts; LHD-INT and LHD-EOL but they operate as a pair. The units are a universal unit and should operate with most digital linear heat cables available on the market.
  • Page 2 General Specification The general parameters of LHD-INT and LHD-EOL can be found in table 1 and table 2 respectively. Model LHD-INT Operating Voltage 24Vdc Voltage Range 16Vdc to 28Vdc Current Standby <20mA Current Fire <30mA Condition Current Fault <25mA Condition...
  • Page 3 Physical Characteristics Diagram 1 – Physical Layout LHD-INT Diagram 2 – Physical Layout LHD-EOL LHD-INT & LHD-EOL Installation Guide Page 3 Rev.1.7 ©G2 Security Pty Ltd...
  • Page 4 The LHD-INT unit has two cable glands, the left hand gland facilitates the entry of the digital linear heat cable so that it can be terminated in the LHD-INT as shown in diagram 3. The right hand cable gland allows for a 4 core cable to enter the LHD-INT unit to terminate the 24Vdc power and the zone interface.
  • Page 5 Pressing the Fire Test button (diagram 4) results in placing a simulated fire condition on the digital linear heat cable. The corresponding LHD-INT should indicate a fire condition as detailed in the follow section of this document. In addition any connected fire alarm equipment should also signal a fire condition.
  • Page 6 EOL testing. It will also indicate that it has triggered the fault event through to the fire control equipment If NO LED indicates are lit then the LHD-INT is not operational. Diagram 5 – LHD-INT operation LHD-INT & LHD-EOL Installation Guide Page 6 Rev.1.7 ©G2 Security Pty Ltd...
  • Page 7 Testing is simply achieved by carrying out the operational steps as detailed in the above sections of this manual. If the device does not perform as expected then both the LHD-INT and LHD-EOL units should be opened and cable terminations be inspected.

This manual is also suitable for:

Lhd-eol

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