Liebert 8 Tons, 50 & 60Hz user manual Heat rejection connection. Field

Page 30

Site Preparation and Installation

Figure 14 Indoor air-cooled centrifugal condenser electrical connections

Field Supplied Unit Disconnect

Switch when Factory Unit

Disconnect Switch is not

Supplied.

Electric Service not by Liebert.

Line VoltageElectric Power Supply Conduit.

Removable

Access Panels

Connection Terminal for

Field Supplied Earth

Grounding Wire.

Optional Factory Installed

Disconnect Switch.

 

 

 

Heat rejection connection.Field

 

 

 

supplied 24V NEC class 2 wiring. See note 2.

 

 

 

Wire connections from evaporator module:

LowVoltageElectric Power

1.

24V GND System 1

Supply Conduit Entrance.

 

2.

24V Supply System 1

 

 

 

3.

High Pressure Alarm System 1

 

 

 

4.

Hot Gas Bypass Connection System 1

 

 

 

 

(only on units with hot gas bypass.

Openings for Field Supplied

 

 

 

If no hot gas bypass, connection is

 

 

 

provided in the evaporator module.

24V NEC Class 2 Wiring

 

 

 

 

 

 

Connect wire 4 and wire 2 to the

Between Condensing Unit and

 

 

 

 

 

 

24V supply).

Fan/Coil Unit.

 

 

 

 

 

5.

24V GND System 2

 

 

 

 

 

 

6. 24V Supply System 2

 

 

 

7.

High Pressure Alarm System 2

 

 

 

8.

Hot Gas Bypass Connection System 2

 

 

 

 

(only on units with hot gas bypass.

6

"

4"

 

If no hot gas bypass, connection is

(101.6mm)

 

provided in the evaporator module.

(152.4mm)

 

 

 

Connect wire 8 and wire 6 to the

8 1/2

"

 

 

 

 

24V supply).

(215.9mm)

 

9.

24V GND Condenser Fan

12 1/2 "

 

 

10. 24V SUPPLY Condenser Fan

(317.5mm)

 

 

 

 

16 1/2 " (419.1mm)

NOTES:

 

1.

Refer to specification sheet for full load amp. and wire size amp. ratings.

 

2.

Control voltage wiring must be a minimum of 16 GA (1.6mm) for up to 75’ (23m) or not

DPN000249_Rev0

 

to exceed 1 volt drop in control line.

22

Image 30
Contents Liebert Mini-Mate2 Page Table of Contents Microprocessor Control System Performance Microprocessor ControlsAlarms System OPERATION, TESTING, and MaintenanceFigures Table iii Heat rejection matchup 60 Hz Table iv Heat rejection matchup 50 HzPage Standard Product Features Optional Equipment Ancillary Ship Loose Accessories Room Preparation Installation ConsiderationsInput Voltage Entering Fluid Temperature Min Application limits, evaporator and chilled-water unitsLocation Considerations Drycooler Evaporator System Weights Unit weightsEquipment Inspection upon receipt Installing the Evaporator or Chilled-Water Units NylockLocking nut Hex nut Close Coupled Installations Nut Clamps are for shipping purposes onlyEvaporator external static pressure 60 at 3750 CFM 6371 CMH Evaporator Air Distribution Filter BoxConnections for Ducted Systems Hp Motor std Hp Motor opt Turns External OpenDrain installation Piping Connections and Coolant Requirements Drain LineCondensate Pump Humidifier Water Supply LineGeneral arrangement diagram chilled-water systems Chilled-Water Piping-Chilled-water Systems OnlyRefrigerant R-22 Piping Recommended refrigerant line sizesEquivalent Suction Feet Circuit Liquid Line Ton unit refrigerant charge Total refrigerant = Units and LinesQuick Connect Fittings Line charges field pipingOptional Filter BOX Power Connections Electrical Connections, Evaporator or Chilled-Water UnitEvaporator unit electrical connections Front of UnitDucting General ConsiderationsConsiderations for Specific Applications Piping Connections Electrical Connections Condensing UnitControl Connections DPN000248Rev1 Heat rejection connection. Field Outdoor Air-Cooled Condensing Unit Installation Electrical ConnectionsLow voltage Electric service connectionHigh voltage Earth ground connectionFootprint Dimensions 11-1/2 152292 Water/Glycol Piping Considerations Condensing Unit Fluid RequirementsRegulating Valve Indoor water/glycol condensing unit dimensional data Site Preparation and Installation Two circuits provided. Single circuit shown Optional Equipment Piping Optional free cooling coil 3-way valve on water/glycol unitsOptional free cooling coil 3-way valve on air-cooled units Checklist for Completed Installation Feature Overview Wall boxMain Menu Menu Default setpoints and allowable ranges Active AlarmsAlarm History SetpointsTime Setup OperationRestart Time Delay DateHumidity Control Method Show DIP Switch10.2 C/F Degrees Lead CompressorSetup functions, default values and allowable ranges Change PasswordsAlarm Enable Calibrate SensorsCustom Alarms Alarm Time DelayCommon Alarm Enable Alarm default time delaysLCD Display Contrast Equipment Options SwitchesCustom Text Nonvolatile MemoryRun Diagnostics Test OutputsTest Inputs Test Micro TB3-3 Connection to Terminal #3 Wallbox TB3-1 TB3-2 TB3-3 TB4-4 Wall Box DIP SwitchesTB3-4 Connection to Terminal #4 Wallbox TB3-2 Connection to Terminal #2 WallboxControl Type Response Proportional Control CoolingReheat Communications Load Control FeaturesDehumidification / Humidification Percent Required Humidification Operation System ActivationHigh Head Pressure Alarms Definitions and TroubleshootingCustom Alarms Air-Cooled SystemsHigh-Water Alarm TemperatureHumidifier Problem Alarm Loss of PowerOptional/Custom Alarms Change FilterSystem Testing Maintenance and Component Operation Discharge Pressure Refrigeration SystemSuction Pressure Thermostatic Expansion ValveGlycol Solution Maintenance Regulating Valves Water/Glycol Condensing UnitsHot Gas Bypass Optional Replacement Procedures Steam Generating Humidifier Operation Procedures Replacing the Humidifier Canister Circuit Board AdjustmentsHumidifier control board DIP switch settings AmpsMaintenance Inspection Checklist Troubleshooting Display freezes Symptom Possible Cause Check or Remedy Cooling cycle tooShort Control padsTroubleshooting Troubleshooting Troubleshooting Page Tin NetIti That