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Infrastructure Management & Monitoring
For Business-Critical Continuity™
®
Liebert Liqui-tect 460
Installation Manual - Zone Leak Detection Sensor
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TABLE OF CONTENTS INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 EXTERIOR DIMENSIONS AND MOUNTING DETAILS. . . . . . . . . . . 1 PLACEMENT ON SUBFLOOR UNDER COOLING SUPPORT EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 POWER WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 WIRING TO AUXILIARY ALARM PANELS . . . . . . . . . . . . . . . . . . 4 CONFIGURATION SWITCH SETTINGS . . . . . .
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Introduction ® Liebert Liqui-tect Leak Detection Sensors install quickly and work simply for reliable detection of conductive aqueous fluid leaks. The Liqui-tect 460 Sensor provides zone protection using the easy-to- install and quick-drying Liebert leak detection cable. LEDs located on the top cover of the module provide visual indication. A reset button provides optional manual acknowledgement of alarms. The top cover is hinged, allowing easy access to the electronics housed inside the st
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Placement on Subfloor Under Cooling Support Equipment (Other applications such as long perimeter walls can be monitored) To a Liebert environmental unit and an optional* monitoring panel To external power Leak supply or detection directly cable from unit Leak detection (see zone (directly Power Wiring beneath unit) on page 3) LT460 * Output connections to external alarm monitoring panels such as the Liebert contact closure alarm panels As shown above, the Liqui-tect 460 (LT460) may b
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Power Wiring 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, LT460 MM2 (8 Ton) Challenger, Himod or Mini-Mate2 (8 ton) LT460 TB TB1 1 TB TB1 1 T5 (24V) TB1-1 T5 (24V) TB1-1 G5 (Ground) TB1-2 G5 (Ground) TB1-2 Liebert MM2 (1 to 5 Ton) LT460 TB1 Power Wiring 4V transformer of (24V) here are no TB1-1 ated terminal (Ground) 24V from Liebert Environmental Unit to LT460 tions) TB1-2 Location
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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 LT460 MM2 (8 Ton) LT460 Liebert DS TB2 TB2 Environmental TB2-3 (N.C.) TB2-3 (N.C.) Env. Unit unit TB2-2 (C) 24 (24V) TB2-2 (C) 24 (24V) TB2-1 (N.O.) 50, 51, 55 or 56 TB2-1 (N.O.) 51 LT460 Liebert Deluxe System/3, LT460 Liebert MM2 (1 to 5 Ton) Challenger, Him
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Configuration Switch Settings A four-position DIP switch is used to Switch Settings OFF ON select two alarm (filter) delays and 1. Leak Detect Filter 10sec 2min three mutually exclusive alarm 2. Alarm Latch No Yes S1 3. Alarm Retest Delay No 1hr modes. The switches are located 4. Not Used —— next to the wiring termination ALL CIRCUITS: CLASS 2 blocks. Contacts shown in POWERED, NON-ALARM state N.C. TB3-3 Contacts C Leak Detect Filter Delay(SS1) Rating: TB3-2 2 24V,3A TB3-1 N.O. SS1 selects t
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Alarm Retest Delay (SS3) SS3 selects the alarm retest delay, the setting in which an alarm is latched and retested every hour. OFF = Non-latching (default) ON = Latching-retest each hour The factory default is OFF=Non-latching. If SS3=ON and a leak is detected, the alarm condition is latched, the sensor goes into a “sleep” mode and power to the leak detection cable is discontinued. After one hour, the sensor will automatically retest if the leak is still present. If the leak has cleared its
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LED Operation System Normal (Green): ® Liqui-tect Sensor • ON continuously when power is applied to sensor. LT460 Alarm Pending (Yellow): • ON continuously during leak detect filter System Normal delay and cable fault delay. • FLASHING (with Leak Detected LED) to Alarm Pending indicate cable fault condition. Cable Fault Leak Detected Leak Detected (Red): • FLASHING to indicate leak detected Reset alarm. • FLASHING (with Alarm Pending LED) to indicate cable fault condition. Notes This eq
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Installation of Leak Detection System Cable 1. Attach the leak detection cable to the LT460 module. 2. Activate module and test detection cable. (Touch detection cable with a clean moist cloth or paper towel.) Dry detection cable to remove the alarm condition. (A hair dryer can be used to speed up the drying.) Note: Do not try to saturate the detection cable for testing! It only requires a small amount of water to alarm. The detection cable will have to dry for the alarm condition to clear.
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4. The installation of the hold-down clips should be in pairs according to Figure 5 with the following considerations: Figure 5 Installation of hold-down clips in pairs a. One pair every 6 to 8 feet in straight patterns (see Figure 6). b. One pair every 3 to 4 feet in circular patterns (see Figure 7). c. One pair at the beginning and end of the arc when turning 90 degrees (see Figure 8). d. One pair as needed to maintain consistent uniform contact between the floor and detection cable. Figure
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Leak Detection Kit Installation Scenarios Scenarios Upflow Downflow Downflow Upflow Unit Unit Unit Unit Detection Detection Detection Detection around on sides and around on sides and entire unit in front of unit entire unit in front of unit 2-ft clearance 2-ft clearance 6-ft clearance 6-ft clearance in front in front in front in front Distance from unit Distance: In back 2 ft No cable behind 1 ft No cable behind On sides 2 ft 2 ft 1 ft 1 ft In front 2 ft 2 ft 6 ft 6 ft Unit Part number (f
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Ensuring The High Availability Of Mission-Critical Data And Applications. Technical Support / Service Locations United States Web Site 1050 Dearborn Drive www.liebert.com P.O. Box 29186 Monitoring Columbus, OH 43229 liebert.monitoring@emerson.com Europe 800-222-5877 Via Leonardo Da Vinci 8 Outside North America: +00800 1155 4499 Zona Industriale Tognana Single-Phase UPS & Server Cabinets 35028 Piove Di Sacco (PD) Italy liebert.upstech@emerson.com +39 049 9719 111 800-222-5877 Fax: +39 049 5841 2
