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Description
®
The Liebert
Outdoor Control Enclosure is designed to be used with a Liebert condenser or drycooler
to control one or more pump and/or fan motors.
Installation of Enclosure
CAUTION
!
Only qualified technicians may install this enclosure.
1. Mount the enclosure to a Liebert condenser or drycooler using the brackets provided or to a secure
wall or building surface. Ensure that the field wiring knockouts are facing downward and the
enclosure cover is in a vertical position.
2. The enclosure mounting brackets may be removed if necessary. Seal any resulting holes with a
permanent water resistant type material to prevent rain water from wetting hazardous voltage
components within the enclosure.
3. Insure that the enclosure cover securing bolts are in place and tightened securely when the
installation is complete.
Electrical Connections
WARNING
!
Risk of electric shock. Can cause injury or dPeath! Disconnect all local and
remote power supplies before working within.
Hazardous Voltage Power Supply Wiring
Wire per NEC and local codes.
Hazardous voltage electrical service is required at the location of the control enclosure. Use the
knockouts provided at the bottom of the enclosure. This power supply does not have to be the same
voltage as the Liebert indoor unit. This separate power source may be 208, 230, 460, or 575 volt, 1 or
3 phase, 60 Hertz: or 200, 230, 380, or 415 volt, 1 or 3 phase, 50 Hertz as appropriate.
Install a field-supplied disconnect as required per local and national codes.
O
C
UTDOOR
ONTROL
Installation Manual
E
NCLOSURE
1
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Summary of Contents for Liebert OUTDOOR CONTROL ENCLOSURE
- Page 1 This power supply does not have to be the same voltage as the Liebert indoor unit. This separate power source may be 208, 230, 460, or 575 volt, 1 or 3 phase, 60 Hertz: or 200, 230, 380, or 415 volt, 1 or 3 phase, 50 Hertz as appropriate.
- Page 2 Electrical Connections Extra-Low Voltage Control Wiring Control interlock between the control enclosure and the indoor unit(s) is required. It is connected between 70 and 71 on the wire raceway in the compressor compartment of the indoor unit and the control box. Multiple indoor units may be connected in parallel if the controlled pumps will feed them all.
- Page 3 Dual Pump Package Sequence of Operation Dual Pump Package Sequence of Operation On a call for cooling, the compressor contactor and/or the R5 Econ-O-Coil relay in the Liebert unit is energized. The relay and contactor are in the Liebert indoor evaporator section. Each compressor con- tactor has a side switch wired in parallel with the R5 relay and is responsible for closure of the low-voltage pump-control circuit.
- Page 4 The Company Behind the Products Technical Support/Service Web Site With over a million installations around the globe, www.liebert.com Liebert is the world leader in computer protection Monitoring systems. Since its founding in 1965, Liebert has 800-222-5877 developed a complete range of support and monitoring@liebert.com...
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