Emerson Liqui-tect 460 Kits User Manual

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.

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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

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