Emerson Liqui-tect MC68HC16Z1- Manuals

2 Placement on Subfloor Under Cooling Support Equipment (Other applications such as long perimeter walls can be monitored) As shown above, the Liqui-tect 460 (LT460) may be placed on a sub- floor, where it is connected to the leak detection cable that surrounds the leak detection zone —the area dire...

3 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 Figure 2 24V from transformer to LT460 Power Wiring 24V from Liebert Environmental Unit to LT460 Liebert Deluxe Sys/3,Challenger, Himod orMM2 (8 Ton) TB1 T5 (24V) G5 (Ground) L...

4 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 Figure 4 LT460 to Liebert contact monitor panel Liebert Deluxe Sys/3,Challenger, Himod orMM2 (8 Ton)...

5 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. Leak Detect Filter Delay (SS1) SS1 selects the leak detect filter delay , the interval for ...

6 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, ...

7 LED Operation System Normal (Green): • ON continuously when power is applied to sensor. Alarm Pending (Yellow): • ON continuously during leak detect filter delay and cable fault delay. • FLASHING (with Leak Detected LED) to indicate cable fault condition. Leak Detected (Red): • FLASHING to indicat...

8 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 ...

9 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 Figur...

10 Leak Detection Kit Installation Scenarios Scenarios Upflow Unit Detection around entire unit Upflow Unit Detection on sides and in front of unit Downflow Unit Detection around entire unit Downflow Unit Detection on sides and in front of unit Distance from unit Distance: In back On sides In front ...

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