Emerson Liebert Prop Fan Condensing Unit Manuel d'installation

Precision CoolingFor Business-Critical Continuity™Liebert Mini-Mate2™Operation & Maintenance Manual - 5 Tons, 50 & 60Hz

Figure iv Model number designation—water/glycol condensing unitsTable i System configurations—60 HzNominalCapacity Cooling UnitCondensing Un

Introduction11.0 INTRODUCTION1.1 Product Description and FeaturesThe Mini-Mate2™ is a temperature/humidity control system designed to be installed abo

Introduction21.2.3 SCR Electric ReheatThe optional electric reheat is pulsed rapidly to provide precise temperature control, while cooling is locked o

Site Preparation and Installation32.0 SITE PREPARATION AND INSTALLATION2.1 Installation ConsiderationsThe evaporator unit is usually mounted above the

Site Preparation and Installation42.1.2 Location Considerations Locate the evaporator unit over an unobstructed floor space if possible. This will a

Site Preparation and Installation5Figure 3 Chilled water systems2.2 System Weights2.3 Equipment Inspection Upon ReceiptWhen the unit arrives, do not u

Site Preparation and Installation62.4 Installing the Ceiling UnitsThe evaporator unit and indoor condensing unit are usually mounted above the ceiling

Site Preparation and Installation7If the return air duct is short or if noise is likely to be a problem, sound-absorbing insulation should be used ins

Site Preparation and Installation8Water/Glycol Piping—Water and Glycol cooled systems require coolant loop connections as speci-fied in the condensing

Site Preparation and Installation9Quick Connect FittingsBe especially careful when connecting the quick connect fittings. Read through the following s

Site Preparation and Installation10Figure 4 Evaporator unit dimensional data39 3/8 "24 "1 1/16 "19 3/4 "1"17 5/8 "8"

Site Preparation and Installation11Figure 5 Threaded rod and hardware kit installationUnit Base Pan (ref)3/8" Hex Nut Nylock3/8" Hex Nut3/8&

Site Preparation and Installation122.4.4 Electrical ConnectionsEach unit is shipped from the factory with internal wiring completed. Refer to electric

Site Preparation and Installation13Figure 6 Evaporator unit electrical connectionsEarth Ground ConnectionConnection terminal for fieldsupplied earth g

Site Preparation and Installation14Figure 7 Close coupled installationEvaporator Unit (Left)Condensing UnitEvaporator Unit Refrigerant Quick Connect F

Site Preparation and Installation152.5 Indoor Air Cooled Centrifugal Fan Condensing Unit Installation2.5.1 Location ConsiderationsThe centrifugal fan

Site Preparation and Installation16Figure 8 Indoor air cooled centrifugal condensing unit dimensions and pipe connections51 13/16 "1 3/4 "21

Site Preparation and Installation17Figure 9 Indoor air cooled centrifugal condenser electrical connectionsField Supplied Unit DisconnectSwitch when Fa

Site Preparation and Installation18Figure 10 System piping with indoor or outdoor air cooled condensing unit2.6 Outdoor Air Cooled Condensing Unit Ins

Site Preparation and Installation192.6.2 Piping ConnectionsDetails for Refrigerant (R-22) Loop piping are in 2.4.3 - Piping Connections and Coolant Re

iTABLE OF CONTENTSPRODUCT MODEL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V1.0 I

Site Preparation and Installation202.7.3 Piping ConnectionsDetails for Refrigerant (R-22) Loop piping are in 2.4.3 - Piping Connections and Coolant Re

Site Preparation and Installation21Figure 11 Indoor water/glycol condensing unit dimensional data32 "32 "29 13/16 "33 5/8 "24 &quo

Site Preparation and Installation22Figure 12 Indoor water/glycol condensing unit electrical field connectionsField Supplied Unit DisconnectSwitch when

Site Preparation and Installation23Figure 13 System piping with indoor water/glycol cooled condensing unitTube in TubeCondenserTube in TubeCondenserHi

Site Preparation and Installation242.8 Optional Equipment Piping2.8.1 Free-Cooling CoilThe free-cooling coil is a secondary coil located downstream of

Site Preparation and Installation252.8.2 Hot Water Reheat CoilBuilding hot water can be piped to a factory-installed hot water reheat coil, located do

Site Preparation and Installation262.9 Checklist for Completed Installation___ 1. Proper clearance for service access has been maintained around the e

Microprocessor Control273.0 MICROPROCESSOR CONTROLThe Microprocessor Control for the Liebert Mini-Mate2 unit features an easy to use menu-driven LCD d

Microprocessor Control283.2 Main Menu <Menu>Press the MENU key to display the Main Menu. The menu selections (in the following order) include: •

Microprocessor Control293.4 StatusThe operator can monitor the percentage heating, cooling, dehumidifying and humidifying status of the unit by select

2.7 Indoor Water and Glycol Cooled Condensing Unit Installation . . . . . . . . . . . . . . . . . . . . . . 192.7.1 Location Consideration

Microprocessor Control303.8 SetbackThe microprocessor can be programmed for night and weekend setback. Two (2) events can be pro-grammed for a five-da

Microprocessor Control313.9.3 Humidity Control MethodThe operator may select either relative (direct) or absolute (predictive) humidity control. If “r

Microprocessor Control323.10 Change PasswordsThe display will prompt the operator to enter a three digit password when attempting to make changes. The

Microprocessor Control333.14 Common Alarm EnableEach individual alarm can be selected to activate or deactivate the common alarm relay. If the ener-gi

Microprocessor Control34Equipment Options SwitchesEquipment options are selected and enabled using DIP switches 1 through 7. These are located on the

Microprocessor Control35Test OutputsWhen this feature is selected, the controller is effectively turned off. When stepping from one load to the next,

Microprocessor Control36Figure 17 Control menuStatus Display75 F 50%RHNO ALARMSMenuSetpointsStatusActive AlarmsTimeDateSetbackSetup OperationSetpoint

Microprocessor Control37Figure 18 Control board—inside evaporatorFigure 19 Wall box boardTB2-4 — Hot Gas BypassTB2-3 — High Head Alarm ConnectionTB2-2

System Performance Microprocessor Controls384.0 SYSTEM PERFORMANCE MICROPROCESSOR CONTROLSThis section describes in detail how the Mini-Mate2 responds

System Performance Microprocessor Controls394.2.3 Humidification OperationThe canister humidifier is activated when the humidity control calculates a

iii5.0 ALARMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .405.1 Alarms:

Alarms405.0 ALARMSThe microprocessor control system will audibly and visually signal all ENABLED Alarms (including two (2) custom alarms). These speci

Alarms415.1.3 Humidity LevelThe humidity level alarm may be activated under the following conditions:• High: The room return air humidity exceeds the

Alarms425.2 Optional/Custom Alarms5.2.1 Change FilterPeriodically, the return air filters in the evaporator must be changed. The Change Filter alarm n

System Operation, Testing and Maintenance436.0 SYSTEM OPERATION, TESTING AND MAINTENANCEThis section describes system testing, maintenance and replace

System Operation, Testing and Maintenance446.2.3 Blower SystemMonthly inspection of the blower package include: motor mounts, belts, fan bearings and

System Operation, Testing and Maintenance45Discharge PressureThe discharge pressure will vary greatly with load and ambient conditions (Table 18). The

System Operation, Testing and Maintenance46Hot Gas Bypass (Optional)OperationThe hot gas bypass valve is installed between the compressor discharge pi

System Operation, Testing and Maintenance47Replacement ProceduresCompressor Replacement—Infrequently a fault in the motor insulation may result in a m

System Operation, Testing and Maintenance48Proper procedures to remove and replace the failed compressor are:1. Disconnect power2. Attach suction and

System Operation, Testing and Maintenance495. Over a period of time, the electrode surface will become coated with a layer of insulating material, whi

FIGURESFigure i Model number designation—Evaporators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

System Operation, Testing and Maintenance506.2.7 Circuit Board AdjustmentsThe humidifier control board governs humidifier operation. There are three p

Maintenance Inspection Checklist517.0 MAINTENANCE INSPECTION CHECKLISTLiebert Mini-Mate2 Notes:Signature:__________________________________________

Troubleshooting528.0 TROUBLESHOOTINGTable 20 TroubleshootingSymptom Possible Cause Check Or RemedyUnit will not startNo power to unit Check voltage at

Troubleshooting53Cooling cycle too shortSensor response delay too shortIncrease sensor response delay. See 3.11 - Calibrate Sensors.Display freezes an

Troubleshooting54NOTES

Troubleshooting55

Troubleshooting56

Ensuring The High Availability0f Mission-Critical Data And Applications.Emerson Network Power, the global leader in enabling business-criticalcontinui

vPRODUCT MODEL INFORMATIONFigure i Model number designation—EvaporatorsM = Microprocessor ControlM = Mini-Mate2Nominal BTUHs (1000)E = Split Evaporato

Figure ii Model number designation—chilled water unitsM = Mini-Mate2M = Microprocessor ControlNominal BTUHs (1000)D = Disconnect Switch0 = N

viiFigure iii Model number designation—air cooled centrifugal condensing unitsMM = Mini-Mate2D = Disconnect Switch0 = No Disconnect SwitchNominal BTUH