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Liqui-tect 460 Kits
User Manual
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Emerson Liqui-tect 460 Kits User Manual

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LIEBERT LIQUI-TECT® 460 KITS
Zone Leak Detection Module With Cable
Product Specification Sheet

Description

The Liebert Liqui-tect 460 (LT460) provides zone detection of leaks, protecting equipment by con­stantly monitoring the area for leaking liquids. The LT460 is the ideal solution for perimeter sensing or serpentine coverage of areas requiring up to 100 feet of cable.
Selectable modes of operation provide flexi­ble alarming options and protection for the cable. The LT460 con­stantly monitors a zone for leaks, internal faults and power fail­ures and warns of any abnormal conditions. Top cover LEDs provide status indication and also ensure the cable is prop­erly installed and operational under raised floors.
Two independent outputs provide a signal to a local alarm panel, Liebert environmental unit, remote building management system or external equip­ment, such as motorized water shut-off valves.

Components

Liqui-tect 460 Module

The LT460 consists of a metal enclosure with a hinged top door providing access to the internal cir­cuit board for wiring termination and configuration of DIP switches. The LT460 will monitor up to 100 feet of connected LT500Y leak detection cable.

LT500Y Leak Detection Cable

The cable material and construction allow the cable to lie flat when used with hold-down clips. The LT500Y is plenum-rated and UL-listed for safe operation.
• If obtained separately, cables are available in
lengths of 15, 35 and 50 feet. These cables can be connected incrementally to monitor from 15 feet up to 100 feet. An end terminator and hold-down clips (two clips required for each 6-8 ft. of cable) must be ordered separately.
• If obtained in a kit, cables are available in
lengths of 20, 25, 30, 35 and 45 feet. Cables in kits cannot be lengthened. Hold-down clips are provided.
Refer to the matrix on page 2 (Prepackaged Sizes for Liebert Units) to select a preconfigured kit sized to specific lengths for Liebert environmental units.
The LT460 kit is ideally suited for the following:

Applications

• Glycol, Condenser Water and Chilled Water Cooling Piping Leak
• Humidification Feed Water Piping
• Condensate Pumps and Drains
• Unit and Ceiling Auxiliary Drip Pans
• Overhead Piping Troughs

Locations

• Large-Scale Network Control Centers
• Data Centers
• MRI, CAT Scan Rooms
• Server Rooms - Closets
• Unattended Remote Shelters
• Sensitive Areas With Overhead Piping
• Mechanical Equipment Rooms
• Industrial Process Control Rooms

Configuration Switch Settings

A four-position DIP switch is used to select two alarm (filter) delays and three mutually exclusive alarm modes. The switches are located next to the wiring termination blocks.
Switch Settings OFF ON
1. Leak Detect Filter 10sec 2min
2. Alarm Latch No Yes
3. Alarm Retest Delay No 1hr
4. Not Used ——
ALL CIRCUITS: CLASS 2
Contacts shown in POWERED, NON-ALARM state
Contacts Rating:
24V,3A
Contacts Rating:
24V,3A
24V 50/60Hz
0.12A
TB3-3 TB3-2 TB3-1
TB2-3 TB2-2 TB2-1
TB1-2 TB1-1
CONNECT ENCLOSURE TO EARTH GROUND
S1
N.C. C
N.O.
N.C. C
N.O.
2
1
1

Specifications

Liqui-tect 460 Module
Power requirements
Enclosure dimensions W x D x H
24 VAC 120 mA, 50/60 Hz 3 VA (max.)
5.35" x 3.23" x 3.5"
(135.9mm x 82mm x 88.9mm) Mounting hole dimensions See diagrams at right Weight (assembled) 2.0 lb. (0.9 kg) Sensing cable
compatibility Maximum length of
sensing cable
All Liebert LT500 sensing
cables
100ft (30.5m)
Metal enclosure NEMA 1, IP 30
Environmental Conditions
Operating temperature 50°F to 104°F (10°C to 40°C)
Operating humidity
10% to 95% relative humidity
(non-condensing) Operating altitude 0 to 10,000 ft. (0 to 3,048m)
Output Relays
Contact rating 2 Form-C, 3 A rating at 24 VAC
Agency Listings
UL UL916 C-UL C22.2, No. 205-M1983 CE Yes FCC Compliance 47 CFR, Part 15

Placement on Subfloor

Under Cooling Support Equipment

To a Liebert
environmental
unit and an
optional*
monitoring
panel
To e x ter n al power supply or directly from unit
LT460
* Output connections to external alarm monitoring panels
such as the Liebert contact closure alarm panels
Leak detection cable
Leak detection zone (directly beneath unit)

Dimensions - Top & Front Views

Leak detection cable connector
TOP VIEW
4.75"
(121mm)
Form-C relay outputs & power wiring connection
Shipping weight: 2 Ibs (0.9 kg) Mounting holes: #8 screws
FRONT VIEW
4.25"
(108mm)
3.25"
(83mm)
4.75"
(121mm)
2"
(51mm)

Prepackaged Sizes for Liebert Units

Leak Detection Kit Installation Suggestions

Scenarios
Upflow
Unit
Detection
around
Note:
indicates
placement
of LT460
module
Distance: Distance From Unit
In back
On sides
In front
Unit
(footprint- in.)
Challenger
(32.5 x 32.5) LT460-Z30 LT460-Z20 LT460-Z30 LT460-Z25
Himod
(69 x 35) LT460-Z35 LT460-Z20 LT460-Z35 LT460-Z25
entire unit
2' clearance
in front
2 ft 2 ft 2 ft
Deluxe System/3
(50 x 35) LT460-Z30 LT460-Z20 LT460-Z35 LT460-Z25 (74 x 35) LT460-Z35 LT460-Z20 LT460-Z35 LT460-Z25 (99 x 35) LT460-Z45 LT460-Z25 LT460-Z45 LT460-Z30 (122 x 35) LT460-Z45 LT460-Z25 LT460-Z45 LT460-Z30
DS
(73 x 35) LT460-Z35 LT460-Z20 LT460-Z45 LT460-Z30 (86 x 35) LT460-Z35 LT460-Z20 LT460-Z45 LT460-Z30 (98 x 35) LT460-Z45 LT460-Z25 LT460-Z45 LT460-Z30 (109 x 35) LT460-Z45 LT460-Z25 LT460-Z45 LT460-Z30 (132 x 35) LT460-Z45 LT460-Z25 LT460-Z45 LT460-Z30
Upflow
Unit
Detection
on sides and
in front of unit
2' clearance
in front
(No cable)
2 ft 2 ft
PART NUMBER
Downflow
Unit
Detection
around
entire unit
6' clearance
in front
1 ft 1 ft 6 ft
Downflow
Unit
Detection
on sides and
in front of unit
6' clearance
in front
(No cable)
1 ft 6 ft

Ordering Information

Packaging Quantity Product Number Description
LT460-Z20 Zone Leak Detection Kit With Cable and Hold-Down Clips 20-Foot Cable
Prepackaged
Kits
Available
Separately
LT460-Z25 Zone Leak Detection Kit With Cable and Hold-Down Clips 25-Foot Cable LT460-Z30 Zone Leak Detection Kit With Cable and Hold-Down Clips 30-Foot Cable LT460-Z35 Zone Leak Detection Kit With Cable and Hold-Down Clips 35-Foot Cable LT460-Z45 Zone Leak Detection Kit With Cable and Hold-Down Clips 45-Foot Cable LT460 Zone Leak Detection Module LT500-15Y Leak Detection Cable 15-Foot Cable LT500-35Y Leak Detection Cable 35-Foot Cable LT500-50Y Leak Detection Cable 50-Foot Cable LT500-ET End Terminator for LT500Y Cable HDC Hold-Down Clips
2

Power Wiring

4
t
t
The LT460 is rated for 24 VAC, 50/60 Hz and 0.12 amp.
Figure 1 24V from Liebert environmental units to LT460
Challenger, Himod or
Liebert DS, Deluxe System/3,
MM2 (8 Ton)
LT460
Challenger, Himod or Mini-Mate2 (8 ton) LT460
TB1TB1
TB1
T5
T5 (24V)
(24V)
TB1
TB1-1
TB1-1
G5 (Ground)
G5
(Ground)
Liebert MM2 (1 to 5 Ton) LT460
V transformer of
ere are no ted terminal ions)
V transformer of
ere are no ted terminal ions)
Power Wiring
(24V)
(Ground)
24V from Liebert Environmental Unit to LT460
Liebert Deluxe Sys/3,
24V from Transformer to LT460
Challenger, Himod or MM2 (8 Ton)
Transformer
TB1
(24V)
T5
From 24V transformer
G5
(Ground)
Liebert MM2 (1 to 5 Ton) LT460
Liebert Mini-Mate2 (1 to 5 ton) LT460
(24V)
From 24V
transformer*
(Ground)
* Requires a 24V external transformer (there are
no designated terminal connections on the unit)
TB1
LT460
LT460
TB1
TB1
TB1
TB1
TB1-2
TB1-2
TB1-1
TB1-2
Location of T5 (24V) connection on Liebert unit
TB1-1
TB1-1
TB1-2
TB1-2
TB1-1
TB1-1
TB1-2
TB1-2
Figure 2 24V from transformer to LT460
Transformer LT460
Transformer
From 24V
From 24V
transformer
transformer
LT460
TB1
TB1
TB1-1
TB1-1
TB1-2
TB1-2
3

Wiring to Auxiliary Alarm Panels

The LT460 has two Form-C dry contact alarm output contacts (TB2 & TB3). Each contact is rated for 24 VAC at 3 amp.
Figure 3 LT460 to Liebert environmental units
Liebert Deluxe Sys/3, Challenger, Himod or MM2 (8 Ton)
Liebert DSLT460
Environmental
Env. Unit
unit
24 (24V)
24
50, 51, 55 or 56
51
(24V)
TB2-3 (N.C.)
TB2-3
(N.C.)
TB2-2 (C)
TB2-2
(C)
TB2-1 (N.O.)
TB2-1
(N.O.)
LT460
TB2
TB2
TB2-3 (N.C.)
TB2-3
(N.C.)
TB2-2 (C)
TB2-2
(C)
TB2-1
(N.O.)
TB2-1 (N.O.)
LT460
LT460
TB2
TB2
Liebert Deluxe System/3,
Liebert MM2 (1 to 5 Ton)
Challenger, Himod or
Mini-Mate2 (8 ton)
Environmental
Env. Unit
unit
OR
Liebert MM2 (1 to 5 Ton)LT460
LT460
TB2
TB2
TB2-3 (N.C.)
TB2-3
(N.C.)
TB2-2 (C)
TB2-2
(C)
TB2-1 (N.O.)
TB2-1
(N.O.)
Figure 4 LT460 to Liebert contact monitor panel
LT460
LT460
TB2
TB2
TB2-3 (N.C.)
TB2-3
(N.C.)
TB2-2 (C)
(C)
TB2-2
TB2-1 (N.O.)
TB2-1
(N.O.)
Liebert Mini-Mate2
(1 to 5 ton)
Environmental
Env. Unit
unit
Liebert Contact
Liebert contact
Monitor Panel
monitor panel
Alarm panel
Alarm Pa nel
24 (24V)
TB1-1
(24V)
TB1-2
51, 55 or 56
TB1-1 (24V)
(24V)
TB1-1
TB1-2 or TB1-3
TB1-3
Input
Input
contact
Contact
(N.O.)
(N.O.)
Liebert Corporation
1050 Dearborn Drive P.O. Box 29186 Columbus, OH 43229
© 2007 Liebert Corporation All rights reserved throughout the world. Specifications subject to change without notice.
Telephone: 1-800-877-9222 Facsimile: 1-614-841-6022 www.liebert.com
® Liebert and the Liebert logo are registered trademarks of Liebert Corporation. All names referred to are trademarks or registered trademarks of their respective owners.
SL-31052_REV0_06-07
4
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