Liebert 3000 3.1Condenser Location, 3.2Electrical Connections, 3.0AIR COOLED MODELS

Air Cooled Models

3.0AIR COOLED MODELS

3.1Condenser Location

The air cooled condenser should be located for maximum security and maintenance accessibility. Avoid ground level sites with public access or areas that contribute to heavy snow or ice accumula- tions. Utilize centrifugal condensers whenever interior building locations must by used. To assure adequate air supply, it is recommended that condensers be located in a clean air area, away from loose dirt and foreign matter that may clog the coil. In addition, condensers should not be located in the vicinity of steam, hot air, or fume exhausts. Also, condensers should be located no closer than three feet (1 meter) from a wall, obstruction, or adjacent unit.

Install condensers in a level position to assure proper refrigerant flow and oil return. For roof instal- lation, mount condensers on steel supports in accordance with local codes. To minimize sound and vibration transmission, mount steel supports across load bearing walls. For ground installation, a concrete pad will provide adequate support. Condenser legs have mounting holes for securing the con- denser to the steel supports or concrete pad.

3.2Electrical Connections

Refer to equipment nameplate regarding wire size and circuit protection requirements. Refer to elec- trical schematic when making connections. Make all wiring and electrical connection in accordance with local and national codes.

! WARNING

Use voltmeter to make sure power is turned off beforE making any electrical connections.

3.2.1Line Voltage

Line voltage electrical service is required for all air cooled condensers at the location of the condenser. This power supply does not have to be the same voltage as the indoor unit. This separate power source may be 208, 230, 460, or 575 V, 60 Hz; or 200, 230, or 380/415 V, 50 Hz. The disconnect switch may be factory-supplied and mounted in the electrical panel or field-supplied and mounted per local and national codes.

3.2.2Low Voltage

A control interlock between the condenser and the indoor unit is required and is connected between 70 and 71 in the handy box of the indoor unit and the electric panel of the air cooled condenser. NEC Class 1 wiring is required.

3.2.3Lee-Temp/Flood Back Head Pressure Control Condensers

Lee-Temp condensers require a separate power supply for the heated receivers. This power supply is connected to the electrical connection box on the end of the receiver.

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