Vertiv DataMate User Manual

Liebert®

DataMate™

Installer/User Guide

1.5-ton to 3-ton Capacity, 50Hz and 60Hz

The information contained in this document is subject to change without notice and may not be suitable for all applications. While every precaution has been taken to ensure the accuracy and completeness of this document, Vertiv assumes no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or omissions. Refer to other local practices or building codes as applicable for the correct methods, tools, and materials to be used in performing procedures not specifically described in this document.

The products covered by this instruction manual are manufactured and/or sold by Vertiv. This document is the property of Vertiv and contains confidential and proprietary information owned by Vertiv. Any copying, use or disclosure of it without the written permission of Vertiv is strictly prohibited.

Names of companies and products are trademarks or registered trademarks of the respective companies. Any questions regarding usage of trademark names should be directed to the original manufacturer.

Technical Support Site

If you encounter any installation or operational issues with your product, check the pertinent section of this manual to see if the issue can be resolved by following outlined procedures. Visit https://www.Vertiv.com/en-us/support/ for additional assistance.

Vertiv | Liebert® DataMate™ Installer/User Guide

TABLE OF CONTENTS

1 Important Safety Instructions 1

1.1 AHRICertified 6

1.2 Agency Listed 7

2 Nomenclature 9

2.1 Nomenclature for Evaporator and Chilled Water Units 9

2.2 Nomenclature for Condensing Units 10

2.2.1 Outdoor Prop Fan Condensing Units for Air Cooled Systems 10

2.2.2 Indoor Condensing Units for Air Cooled Systems 11

2.2.3 Close Coupled Condensing Unit for Water/Glycol CooledSystems 12

2.2.4 Remote, Indoor Water/Glycol Cooled Condensing Units 13

2.3 System Configurations 14

3 Site Preparation and Equipment Handling 17

3.1 Planning Dimensions 17

3.2 Room Preparation 17

3.3 Application Limits 17

3.4 Location Considerations 18

3.4.1 Location Considerations for Evaporator, Indoor CondensingandChilled WaterUnits 19

3.4.2 Location Considerations for an Outdoor Condensing Unit 20

3.5 Unit Weights 21

3.6 Equipment Inspection and Handling 21

4 Installation 23

4.1 Installing Wall Mounted EvaporatorsandChilled Water Units 23

4.1.1 Changing Air Flow Direction 23

4.2 Installing Outdoor Condensing Unit forAir CooledSplit Systems 23

4.3 Installing Ceiling Mounted Condensing Units 23

4.3.1 Installing Suspension Rods andMounting Ceiling Units 24

4.3.2 Guidelines for Ducted Systems 26

4.4 Close Coupled Installations forIntegralWater/Glycol CondensingUnits 27

4.4.1 Connecting the Close Coupled Refrigerant Circuit 33

4.4.2 Connecting the Close Coupled Electrical Wiring 35

4.4.3 Final Installation Steps for Close Coupled Units 36

5 Piping and Refrigerant Requirements 37

5.1 Fluid Piping Required 38

5.1.1 Evaporator Drain Line Installation Requirements 38

5.1.2 Humidifier Drain Line Installation Requirements 38

5.1.3 Condensate Drain Pump Kit 38

5.1.4 Water Supply Line to the Humidifier 39

5.1.5 Chilled Water Loop Piping 39

5.1.6 Water/Glycol Loop Piping 40

5.2 Refrigerant Piping 42

5.2.1 Piping when Condensing Unit is Above or Below Evaporator 43

5.2.2 Refrigerant Line Sizes and Equivalent Lengths 44

5.3 Refrigerant Charge Requirements 45

5.3.1 Field Fabricated Refrigeration Piping 46

5.3.2 Evacuation and Leak Testing Air Cooled Systems 46

5.3.3 Charging Air Cooled Systems 49

5.3.4 Field Charge Verification forAir Cooled Systems 49

5.3.5 Documenting Refrigerant Charge on Air Cooled Units 50

5.3.6 Evacuation and Leak Testing Water/Glycol Cooled Systems 50

5.3.7 Charging Water/Glycol Cooled Systems 52

5.3.8 Optimizing Refrigerant Charge on Water/Glycol Units 53

5.3.9 Documenting Refrigerant Charge on Water/Glycol-cooled Units 53

6 Electrical Connection Requirements 55

6.1 Input Power Connection Requirements 56

6.2 Control Wiring Connection Requirements 57

6.2.1 Wall Box Controller Control Connections 57

6.2.2 Split System Condensing Unit Control Connections 57

6.2.3 Water/Glycol Cooled Unit Control Connections 57

6.2.4 Additional Control Connections 57

7 Checklist for Completed Installation 59

8 Initial Start-up Checks andCommissioningProcedure forWarrantyInspection 61

9 Microprocessor Control 63

9.1 Controller Operation 63

9.1.1 Powering On/Off with Wall Mounted Display 64

9.1.2 Silencing an Audible Alarm 64

9.2 Main Menu <MENU> 64

9.2.1 Editing Setpoints 67

9.2.2 Viewing Unit Status 67

9.2.3 Viewing Active Alarms 68

9.2.4 Setting Controller Time 68

9.2.5 Setting Controller Date 68

9.2.6 Programming Setback 68

9.2.7 Editing Setup Operation 69

9.2.8 Changing Setpoint and Setup Passwords 71

9.2.9 Calibrating Sensors and Setting Sensor Response Delay 71

9.2.10 Enabling/Disabling Alarms 72

9.2.11 Setting Alarm Delays 72

9.2.12 Activating the Common Alarm Relay 73

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9.2.13 Configuring Custom Alarms 74

9.2.14 Customizing Alarm Message Text 74

9.2.15 LCD Display Contrast 74

9.2.16 Non-volatile Memory 74

9.2.17 Equipment Options DIP Switches 75

9.3 Running Diagnostics 76

9.3.1 Showing Test Inputs 76

9.3.2 Testing Outputs 76

9.3.3 Testing the Microcontroller 77

9.4 System Control and Performance 80

9.4.1 Temperature Control 80

9.4.2 Cooling/Heating Required 80

9.4.3 Electric Reheat 80

9.4.4 Humidity Control 80

9.4.5 Load Control 81

9.4.6 Monitoring 81

9.5 Alarm Notification, Acknowledgment, and Descriptions 81

9.5.1 Custom Alarms 81

9.5.2 High Head Pressure Alarm 82

9.5.3 Humidity Level Alarms 82

9.5.4 Temperature Level Alarms 83

9.5.5 Humidifier Problem Alarm 83

9.5.6 Loss of Power Alarm 83

9.5.7 Short Cycle Alarm 83

10 Maintenance 85

10.1 System Testing 86

10.1.1 Environmental Control Function Tests 86

10.1.2 Cooling Test 86

10.1.3 Heating Test 86

10.1.4 Humidification Test 86

10.1.5 Dehumidification Test 86

10.1.6 Remote Shutdown Test 86

10.2 Filter Maintenance 87

10.3 Electric Panel Maintenance 87

10.4 Direct Drive Blower Package Maintenance 87

10.4.1 Fan Impeller and Motor Bearing Maintenance 87

10.4.2 Air Distribution Inspection 87

10.5 Electric Reheat Maintenance 87

10.6 Refrigeration System Maintenance 87

10.6.1 Refrigeration Suction Pressure 87

iii

10.6.2 Refrigeration Discharge Pressure 87

10.6.3 Thermostatic Expansion Valve (TXV) Maintenance 88

10.6.4 Air Cooled Condensing Unit Maintenance 88

10.6.5 Hot Gas Bypass Operation and Maintenance 88

10.6.6 Water/Glycol Condenser Maintenance 90

10.6.7 Regulating Valve Maintenance (Water/Glycol Cooled Condensers Only) 90

10.6.8 Glycol Solution Maintenance 90

10.7 Compressor Maintenance 91

10.7.1 Mechanical Failure of the Compressor 91

10.7.2 Electrical Failure of the Compressor 91

10.7.3 Replacement Compressors 92

10.7.4 Replacing a Failed Compressor 92

10.8 Steam Generating Humidifier Maintenance 92

10.8.1 Operating the Humidifier 93

10.8.2 Replacing the Canister 94

10.8.3 Circuit Board Adjustments 95

11 Preventive Maintenance Checklist 97

12 Troubleshooting 101

Appendices 105

Appendix A: Technical Support and Contacts 105

Appendix B: Submittal Drawings 107

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1 IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important safety instructions that should be followed during the installation and maintenance of the Liebert®DataMate. Read this manual thoroughly before attempting to install or operate this unit.

Only qualified personnel should move, install or service this equipment.

Adhere to all warnings, cautions, notices and installation, operating and safety instructions on the unit and in this manual. Follow all installation, operation and maintenance instructions and all applicable national and local building, electrical and plumbing codes.

WARNING! Arc flash and electric shock hazard. Open all local and remote electric power supply disconnect switches, verify with a voltmeter that power is Off and wear appropriate, OSHA approved personal protective equipment (PPE) per NFPA 70E before working within the electric control enclosure. Failure to comply can cause serious injury or death. Customer must provide earth ground to unit, per NEC, CEC, and local codes, as applicable. Before proceeding with installation, read all instructions, verify that all the parts are included and check the nameplate to be sure the voltage matches available utility power. The Liebert® controller does not isolate power from the unit, even in the Unit Off mode. Some internal components require and receive power even during the Unit Off mode of the controller. The only way to ensure that there is NO voltage inside the unit is to install and open a remote disconnect switch. Refer to unit electrical schematic. Follow all local codes.

WARNING! Risk of electric shock. Can cause equipment damage, injury, or death. Open all local and remote electric power supply disconnect switches and verify with a voltmeter that power is off before working within any electric connection enclosures. Service and maintenance work must be performed only by properly trained and qualified personnel and in accordance with applicable regulations and manufacturers’ specifications. Opening or removing the covers to any equipment may expose personnel to lethal voltages within the unit even when it is apparently not operating and the input wiring is disconnected from the electrical source.

WARNING! Risk of over-pressurization of the refrigeration system. Can cause piping rupture, explosive discharge of high pressure refrigerant, loss of refrigerant, environmental pollution, equipment damage, injury, or death. This unit contains fluids and gases under high pressure. Use extreme caution when charging the refrigerant system. Do not pressurize the system higher than the design pressure marked on the unit's nameplate. Relieve pressure before cutting into or making connections/disconnections to the piping system. Local building or plumbing codes may require installing a pressure relief device in the system.

Consult local building and plumbing codes for installation requirements of additional pressure relief devices when isolation valves are field installed. Do not isolate any refrigerant circuits from over-pressurization protection. The PFH and MCD condensing units include a factory installed pressure relief valve mounted on top of the receiver. The valve is rated for a maximum working pressure of 475 psig.

1 Im portant Safety Instructions

WARNING! Risk of contact with high speed, rotating fan blades. Can cause injury or death. Open all local and remote electric power supply disconnect switches, verify with a voltmeter that power is off, and verify that all fan blades have stopped rotating before working in the unit cabinet.

WARNING! Risk of electric shock. Can cause serious injury or death. The microprocessor does not isolate power from the unit, even in the Unit Off mode. Some internal components require and receive power even during the Unit Off mode of the control. Open all local and remote electric power disconnect switches and verify with a voltmeter that power is Off before working on any component of the system.

WARNING! Risk of improper wiring, piping, moving, lifting and handling. Can cause equipment damage, serious injury or death. Installation and service of this equipment should be done only by qualified personnel, wearing appropriate, OSHA approved PPE, who have been specially trained in the installation of air conditioning equipment.

WARNING! Risk of improper wire and loose electrical connections. Can cause overheated wire and electrical connection terminals resulting in smoke, fire, equipment and building damage, injury or death. Use correctly sized copper wire only and verify that all electrical connections are tight before turning power On. Check all electrical connections periodically and tighten as necessary.

WARNING! Risk of unit falling off of the wall. Can cause building and equipment damage and serious injury. A licensed professional structural engineer should evaluate the wall to determine if the unit may be safely mounted on the wall and determine the type and size of fasteners required to support the weight of the unit during all phases of operation because some vibration may occur during start, stop, and operation cycles. The wall may need to be reinforced to support the maximum load of the unit. See Table 3.5 on page21, for unit weights.

WARNING! Risk of ceiling collapse and heavy unit falling. Can cause building and equipment damage, serious injury or death. If using a ceiling mounted condensing unit, verify that the supporting roof structure is capable of supporting the weight of the unit(s) and the accessories. See the appropriate condensing unit installer/user guide for the unit weights. Securely anchor the top ends of the suspension rods and verify that all nuts are tight.

WARNING! Risk of smoke and fire. Can cause activation of fire suppression systems, building evacuation, dispatching of fire/rescue equipment and personnel and catastrophic canister failure resulting in water leaks, equipment damage, injury or death. Using a humidifier canister that has reached the end of it’s service life can be extremely hazardous. If the canister cannot be replaced immediately at the end of life condition, turn Off the power and water supply to the humidifier and remove the canister until a replacement canister can be installed. Do not ignore humidifier problem alarms. Resetting humidifier without addressing cause may result in fire or damage due to leaking water.

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CAUTION: Risk of excessive refrigerant line pressure. Can cause tubing and component rupture resulting in equipment damage and personal injury. Do not close off any field installed refrigerant line isolation valve for repairs unless a pressure relief valve is field installed in the line between the isolation valve and the check valve. The pressure relief valve must be rated 5% to 10% higher than the system design pressure. An increase in ambient temperature can cause the pressure of the isolated refrigerant to rise and exceed the system design pressure rating (marked on the unit nameplate).

CAUTION: Risk of contact with sharp edges, splinters, and exposed fasteners. Can cause injury. Only properly trained and qualified personnel wearing appropriate, OSHA approved PPE should attempt to move, lift, remove packaging from or prepare the unit for installation.

CAUTION: Risk of contact with hot surfaces. Can cause injury. The compressor, refrigerant discharge lines, fan motor, and some electrical components are extremely hot during unit operation. Allow sufficient time for them to cool to a touch-safe temperature before working within the unit cabinet. Use extreme caution and wear appropriate, OSHA approved PPE when working on or near hot components.

CAUTION: Risk of contact with hot surfaces. Can cause burn injury. The humidifier canister and steam discharge lines are extremely hot during operation. Allow sufficient time for them to cool to a touch-safe temperature before handling. Use extreme caution and wear appropriate, OSHA approved PPE when performing maintenance on the humidifier.

NOTICE

CAUTION: Risk of contacting caustic substances. Can cause injury. Avoid touching or contacting the gas and oils with exposed skin. Severe burns will result. Wear appropriate, OSHA approved PPE when handling contaminated parts.

Risk of oil contamination with water. Can cause equipment damage.

Liebert®DataMateDX systems require the use of POE (polyolester) oil. POE oil absorbs water at a much faster rate when exposed to air than previously used oils. Because water is the enemy of a reliable refrigeration system, extreme care must be used when opening systems during installation or service. If water is absorbed into the POE oil, it will not be easily removed and will not be removed through the normal evacuation process. If the oil is too wet, it may require an oil change. POE oils also have a property that makes them act as a solvent in a refrigeration system. Maintaining system cleanliness is extremely important because the oil will tend to bring any foreign matter back to the compressor.

1 Im portant Safety Instructions

NOTICE

Risk of clogged or leaking drain lines and leaking water supply lines. Can cause equipment and building damage.

This unit requires a water drain connection. Drain lines must be inspected at start-up and periodically, and maintenance must be performed to ensure that drain water runs freely through the drain system and that lines are clear and free of obstructions and in good condition with no visible sign of damage or leaks. This unit may also require an external water supply to operate.

Improper installation, application and service practices can result in water leakage from the unit. Water leakage can result in catastrophic and expensive building and equipment damage and loss of critical data center equipment.

Do not locate unit directly above any equipment that could sustain water damage.

We recommend installing a monitored fluid detection system to immediately discover and report coolant fluid system and condensate drain line leaks.

Risk of leaking water/glycol. Can cause equipment and building damage.

Improper installation, application, and service practices can result in water leakage from the unit. Do not mount this unit over equipment and furniture that can be damaged by leaking water. Install a water-tight drain pan with a drain connection under the cooling unit and the ceiling mounted water/glycol condensing unit. Route the drain line to a frequently used maintenance sink so that running water can be observed and reported in a timely manner. Post a sign to alert people to report water flowing from the secondary drain pan. We recommend installing monitored leak detection equipment for the unit and supply lines and in the secondary drain pan. Check drain lines periodically for leaks, sediment buildup, obstructions, kinks and/or damage and verify that they are free running.

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NOTICE

Risk of piping system corrosion and freezing fluids. Can cause leaks resulting in equipment and very expensive building damage. Cooling coils and piping systems are at high risk of freezing and premature corrosion. Fluids in these systems must contain the proper antifreeze and inhibitors to prevent freezing and premature coil and piping corrosion. The water or water/glycol solution must be analyzed by a competent local water treatment specialist before start-up to establish the inhibitor and antifreeze solution requirement and at regularly scheduled intervals throughout the life of the system to determine the pattern of inhibitor depletion.

The complexity of water/glycol solution condition problems and the variations of required treatment programs make it extremely important to obtain the advice of a competent and experienced water treatment specialist and follow a regularly scheduled coolant fluid system maintenance program.

Water chemistry varies greatly by location, as do the required additives, called inhibitors, that reduce the corrosive effect of the fluids on the piping systems and components. The chemistry of the water used must be considered, because water from some sources may contain corrosive elements that reduce the effectiveness of the inhibited formulation. Sediment deposits prevent the formation of a protective oxide layer on the inside of the coolant system components and piping. The water/coolant fluid must be treated and circulating through the system continuously to prevent the buildup of sediment deposits and or growth of sulfate reducing bacteria.

Proper inhibitor maintenance must be performed in order to prevent corrosion of the system. Consult glycol manufacturer for testing and maintenance of inhibitors.

Commercial ethylene glycol, when pure, is generally less corrosive to the common metals of construction than water itself. It will, however, assume the corrosivity of the water from which it is prepared and may become increasingly corrosive with use if not properly inhibited.

NOTICE

We recommend installing a monitored fluid detection system that is wired to activate the automatic closure of field installed coolant fluid supply and return shut-off valves to reduce the amount of coolant fluid leakage and consequential equipment and building damage. The shut-off valves must be sized to close off against the maximum coolant fluid system pressure in case of a catastrophic fluid leak.

Risk of frozen pipes and corrosion from improper coolant mixture. Can cause water leaks resulting in equipment and building damage.

When piping or the cooling unit may be exposed to freezing temperatures, charge the system with the proper percentage of glycol and water for the coldest design ambient temperature. Automotive antifreeze is unacceptable and must NOT be used in any glycol fluid system. Use only HVAC glycol solution that meets the requirements of recommended industry practices.

Risk of no flow condition. Can cause equipment damage. Do not leave the water/coolant fluid supply circuit in a no flow condition. Idle fluid allows the collection of sediment that prevents the formation of a protective oxide layer on the inside of tubes. Keep unit switched On and water/coolant fluid supply circuit system operating continuously.

1 Im portant Safety Instructions

NOTICE

Risk of improper water supply. Can reduce humidifier efficiency or obstruct humidifier plumbing.

Do not use completely demineralized water with this unit. The water must contain minerals for the electrode principle to work.

Do not use a hot water source. It will cause deposits that will eventually block the fill valve opening.

Risk of water backing up in the drain line. Leaking and overflowing water can cause equipment and building damage.

Do not install an external trap in the drain line. This line already has a factory installed trap inside the cabinet. Installation of a second trap will prevent drain water flow and will cause the water to overflow the drain pan.

This line may contain boiling water. Use copper or other material that is rated for handling boiling water for the drain line. Sagging condensate drain lines may inadvertently create an external trap.

Risk of doorway/hallway interference. Can cause unit and/or structure damage. The unit may be too large to fit through a doorway or hallway while on the skid. Measure the unit and passageway dimensions, and refer to the installation plans prior to moving the unit to verify clearances.

Risk of damage from forklift. Can cause unit damage. Keep tines of the forklift level and at a height suitable to fit below the skid and/or unit to prevent exterior and/or underside damage.

NOTICE

Risk of improper storage. Can cause unit damage.

Keep the unit upright, indoors and protected from dampness, freezing temperatures and contact damage.

1.1 AHRICertified

The Liebert® DataMate™ 60-Hz system is AHRI Certified™, the trusted mark of performance assurance for heating, ventilation, air conditioning, and commercial refrigeration equipment, using AHRI Standard 1360.

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1.2 Agency Listed

Standard 60-Hz units are CSA Certified to the harmonized U.S. and Canadian product safety standard CSA C22.2 No 236/UL 1995 for “Heating and Cooling Equipment” and are marked with the CSA c-us logo.

1 Im portant Safety Instructions

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2 NOMENCLATURE

This section describes the model number configuration for Liebert® DataMate units and components.

2.1 Nomenclature for Evaporator and Chilled Water Units

Table 2.2 below describes each digit of the model number.

Table 2.1 Nomenclature Example

1 2 3 4 5 6 7 8 9 10 11

D M E 0 3 7 E — P H N

Table 2.2 Nomenclature Digit Definitions for Evaporator and Chilled Water Units

Digit Description

Digits 1 , 2, 3 = The Base zunit

DME = DataMate evaporator/chilled water cooling unit

Digits 4, 5, 6 = Nominal Capacity, kB tuh

Digit7, 8 = Cooling Type

C – = Chilled water cooled

E – = Evaporator

Digit9 = Supply Power

P = 208/230V / 1 ph / 60Hz

W = 2 00/220 V / 1ph / 50Hz

Digit10 = Reheat and Humidifica tion

0 = Reheat only

C = Cooling only

H = Reheat and humidifier

Digit11 = Refrigerant/Revision

N = R-407C, field-supplied, field-charged (evaporator)

7 = Revision (chilled water)

2 N omenclature

2.2 Nomenclature for Condensing Units

This section describes the model number configuration for DataMate condensing units.

2.2.1 Outdoor Prop Fan Condensing Units for Air Cooled Systems

Table 2.4 below describes each digit of the model number.

Table 2.3 Prop Fan Condensing Unit Nomenclature Example

1 2 3 4 5 6 7 8 9 10 11

P F H 0 3 7 A — P L N

Table 2.4 Nomenclature Digit Definitions for Outdoor, Prop Fan Condensing Units

Digit Description

Digits 1 to 3 = The Base Unit

PFH = Prop fan condensingunit with hot gas bypass

Digit4 = Sound Level

0 = Standard

Z = Quiet-Line

Digit5 and 6 = Nominal Capacity, kBtuh

Digit7 = Cooling Type

A = Air cooled

Digit8 = Coil Type

— = Standardcoil

C = Coated coil (epoxy with UVtopcoat)

Digit9 = Supply Power

A = 460V / 3ph / 60Hz

B = 575V / 3ph / 60Hz

M = 380/415V / 3ph / 50Hz

P = 208/230V / 1 ph / 60Hz

S = 220V / 1ph / 50Hz

Y = 208/230V / 3ph / 60Hz

Digit10 = Ambient Rating/Control

L = 95°F Ambient, Liebert® Lee-Temp™

H = 105°F Ambient, Liebert® Lee-Temp™

Digit11 = Refrigerant

N = R-407C field-supplied, field-charged

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2.2.2 Indoor Condensing Units for Air Cooled Systems

Table 2.6 below describes each digit of the model number.

Table 2.5 Indoor, Air Cooled Condensing Unit Nomenclature Example

1 2 3 4 5 6 7 8 9 10

M C D 3 6 A L A H N

Table 2.6 Nomenclature Digit Definitions for Indoor, Air Cooled Condensing Units

Digit Description

Digits 1 to 2 = the Base Unit

MC = Mini-Mate2-style condensing unit

Digit3 = Disconnect

D = Disconnect switch

Digit4 and 5 = Nominal Capacity

24 = 24 kB tuh, 2-ton, 60Hz

35 = 35 kBtuh, 3-ton, 50Hz

36 = 36 kB tuh, 3-ton, 60Hz

Digit6 = Cooling Type

A = Air cooled

Digit7 = Head Pressure Control

L = Liebert® Lee-Temp™ Receiver

Digit8 = Supply Power

A = 460V / 3ph / 60Hz

M = 380/415V / 3ph / 50Hz

P = 208/230V / 1 ph / 60Hz

S = 220V / 1ph / 50Hz

X = 277V / 1ph / 50 Hz

Y = 208/230V / 3ph / 60Hz

Digit9 = Hot Gas B ypass

H = Hot gas bypass

Digit10 = Refrigerant

N = R-407C field-supplied, field-charged

2 N omenclature

2.2.3 Close Coupled Condensing Unit for Water/Glycol CooledSystems

Table 2.8 below describes each digit of the model number.

Table 2.7 Close Coupled Water/Glycol Condensing Unit Nomenclature Example

1 2 3 4 5 6 7 8 9 10 11

D M C 0 4 0 W G P 0 N

Table 2.8 Nomenclature Digit Definitions for Close Coupled Water/Glycol Units

Digit Description

Digits 1 , 2, 3 = The Base Unit

DMC = DataMate condensingunit

Digits 4, 5, 6 = Nominal Capacity, kB tuh

Digit7, 8 = Cooling Type

WG = Water/Glycol cooled

Digit9 = Supply Power

P = 208/230V / 1 ph / 60Hz

Digits 1 0, 11 = Refrigerant

0N = R-407C, field-supplied, field-charged

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2.2.4 Remote, Indoor Water/Glycol Cooled Condensing Units

Table 2.10 below describes each digit of the model number.

Table 2.9 Remote, Indoor Water/Glycol Condensing Unit Nomenclature Example

1 2 3 4 5 6 7 8 9 10

M C D 3 8 W 2 A H N

Table 2.10 Nomenclature Digit Definitions for Indoor, Water/Glycol Cooled Condensing Units

Digit Description

Digits 1 to 2 = The Base Unit

MC = Mini-Mate2-style condensing unit

Digit3 = Disconnect

D = Disconnect switch

Digit4 and 5 = Nominal Capacity, kBtuh

Digit6 = Cooling Type

W = Water/Glycol cooled

Digit7 = Head Pressure Control

2 = 2-way standardpressure fluid regulating valve

3 = 3-way standard pressure fluid regulating valve

D = 2-way high pressure fluid regulating valv e

T = 3-way high pressure fluid regulating valv e

Digit8 = Supply Power

A = 460V / 3ph / 60Hz

M = 380/415V / 3ph / 50Hz

P = 208/230V / 1 ph / 60Hz

S = 220V / 1ph / 50Hz

X = 277V / 1ph / 50 Hz

Y = 208/230V / 3ph / 60Hz

Digit9 = Hot Gas B ypass

H = Hot gas bypass

Digit10 = Refrigerant

N = R-407C field-supplied, field-charged

2 N omenclature

2.3 System Configurations

The following figures show the available capacity and cooling options for the Liebert® DataMate.

Figure 2.1 Air Cooled Units

Item Description

1 Air cooled with outdoor condensing unit suitable for installation on a roof or at ground level.

2 Air cooled with indoor condensing unit for applications where roof or other outdoorlocations are impractical.

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Figure 2.2 Water/Glycol Cooled Units

Item Description

1 Water/Glycol cooled with close coupled condensing unit conveniently needs only a single power supply and water supply connection installed.

2 Water/Glycol cooled with remote, indoor condensing unit that installs under the raised floor or above the dropped ceiling.

2 N omenclature

Figure 2.3 Chilled Water Units

Item Description

1 Chilled water cooled c onnects quickly and easily to a chilled water loop for ease of installation.

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3 SITE PREPARATION AND EQUIPMENT HANDLING

NOTE: Before installing unit, determine whether any building alterations are required to run piping, wiring and ductwork. Follow all unit dimensional drawings and refer to the submittal engineering dimensional drawings of individual units for proper clearances.

3.1 Planning Dimensions

The unit dimensions are described in the submittal documents included in the Submittal Drawings on page107.

The following table lists the relevant documents by number and title.

Table 3.1 Dimension Planning Drawings

Docu ment Number Title

Evaporators/Chilled Water Units

DPN000262 Cabinet Dimensions, Evaporator/Chilled Water Unit

IndoorCondensing Units

DPN004420 Cabinet Dimensions, Air Cooled units

DPN004421 Cabinet Dimensions, Water/Glycol Cooled units

DPN000269 Cabinet Dimensions, Close Coupled Water/Glycol Condensing Unit

3.2 Room Preparation

The room should be well insulated and must have a sealed vapor barrier. The vapor barrier in the ceiling and walls can be a polyethylene film. Paint on concrete walls and floors should be vapor resistant.

NOTE: The vapor barrier is the single most important requirement for maintaining environmental control in the conditioned area.

Outside or fresh air should be kept to a minimum when tight temperature and humidity control is required. Outside air adds to the site’s cooling, heating, dehumidifying and humidifying loads. We recommend keeping the outside air below 5% of the total air circulated in the computer room. Doors should be properly sealed to minimize leaks and should not contain ventilation grilles.

3.3 Application Limits

Table 3.2 Application Limits for Evaporator and Chilled Water Units

Input Vo ltage Range o f Return Air Co nditio ns to the U nit*

Minimum Maximum Dry Bulb Temperature Relative Humidity

–5% +10% 65 to 85°F (18 to 29°C) 20 to 80%

*The unit willoperate a t these conditions, but it will not control to these conditionextremes.

3 S ite Preparation and Equipment Hand ling

Table 3.3 Application Limits for Indoor and Outdoor Air Cooled Condensing Unit

Input Vo ltage

Condensing Unit Type

Minimum Maximum Minimum Maximum

–5% +10%

*Unit capacity ratings are stated for 95°F (35°C) for standard units and 105°F (41°C)for P FH highambient units. Exceeding these rating points by 20°F (11°C) will result in lower cooling capacities, but will not dama ge the equipment.

Outdoor prop fa n

condensing unit

Indoorair cooled condensing

unit

Entering Dry Bu lb Air Temperature

115°F (48°C) standard

–30°F (–34°C)

–30°F (–34°C) 115°F (48°C)

ambient unit*

125°F (52°C)high ambient

unit*

Table 3.4 Application Limits for Indoor Water/Glycol Cooled Condensing Unit

Input Vo ltage Entering Fluid Temperature

Minimum Maximum Minimu m Maximum

–5% +10% 65°F (18°C)* 115°F (46°C)

*Operation below 65°F (18°C)m ay result in fluid noise and reduced valve life.

3.4 Location Considerations

When determining installation locations, consider that these units contain water and that water leaks from ceiling mounted condensing units can cause damage to sensitive equipment and furniture below.

NOTICE

Risk of leaking water/glycol. Can cause equipment and building damage.

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3.4.1 Location Considerations for Evaporator, Indoor CondensingandChilled WaterUnits

The system can be installed in several ways. However, you should always mount the evaporator on a wall in the equipment room.

• For an air cooled system with an indoor condensing unit, the condensing unit may be installed near the evaporator to minimize piping, or near the outside wall to minimize air duct work.

• For water/glycol cooled systems, a DMC condensing unit may be close coupled with the evaporator or a remote MCD indoor condensing unit may be installed above the ceiling or below a raised floor.

Refer to Refrigerant Line Sizes and Equivalent Lengths on page44 for maximum refrigerant line lengths.

Do not install units in areas where normal unit operating sound may disturb the working environment.

When installing an air cooled or water/glycol cooled unit inside a space, ensure that national and local codes are met for refrigerant concentration limits that might vary with building type and use.

Try to locate the evaporator in an unobstructed floor space to facilitate service. Avoid locations in confined areas that affect the air flow pattern and result in short cooling cycles, downdrafts and air noise. Figure 3.1 below, shows location recommendations. Avoid locating the unit in an alcove or at the extreme end of a long, narrow room. Avoid installing multiple units close to each other, which can result in crossing air patterns, uneven loads and competing operating modes. Do not attach additional devices (such as smoke detectors, etc.) to the cabinet. Doing so interferes with routine maintenance and service.

Figure 3.1 Proper Location in the Room

3 S ite Preparation and Equipment Hand ling

3.4.2 Location Considerations for an Outdoor Condensing Unit

For an air cooled system using an outdoor condensing unit, the condensing unit may be mounted on the roof or remotely in any outdoor area.

Observe the following when planning the installation of the outdoor unit:

• To ensure a satisfactory air supply, locate air cooled condensing units in an environment with clear air, away from loose dirt and foreign matter that may clog the coil.

• Condensing units must not be located in the vicinity of steam, hot air, or fume exhausts or closer than 18 inches from a wall, obstruction, or adjacent unit.

• Avoid areas where heavy snow will accumulate at air inlet and discharge locations.

• The condensing unit should be located for maximum security and maintenance accessibility. Avoid ground level sites with public access. Install a solid base, capable of supporting the weight of the condensing unit.

• The base should be at least 2in. (51mm) higher than the surrounding grade and 2 in. (51mm) larger than the dimensions of the condensing unit base. For snowy areas, a base of sufficient height to clear snow accumulation must be installed.

• Securely attach the unit to the base using the holes provided in the unit mounting rails to prevent unit movement that might stress refrigerant piping and electrical wiring.

Before beginning, refer to Piping and Refrigerant Requirements on page37 for unit placement, piping guidelines, and refrigerant charge requirements for your system.

The condensing unit must be located within the maximum distance from the evaporator using the evaporator guidelines listed in Piping when Condensing Unit is Above or Below Evaporator on page43.

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3.5 Unit Weights

Table 3.5 Evaporator and Condensing Unit weights

Evaporator Section

Outdoor, Propeller Fan CondensingUnit

Indoor, Centrifugal Fan Condensing Unit

Model Numb er

lb. (kg)

60Hz 50Hz

DME020E — 230 (104)

DME027E — 330 (150)

DME037E DME037E 365 (166)

DME044C DME044C 365 (166)

PFH020A — 200 (91)

PFH027A — 200 (91)

PFH037 A PFH036A 2 41 (109)

MCD24A — 230 (104)

MCD36A MCD35A 240 (109)

Water/Glycol Cooled CondensingUnit

MCD26W — 175 (79)

MCD38W MCD37W 220 (100)

Close Coupled Water/Glycol CondensingUnit

DMC022WG — 170 (77)

DMC029WG — 17 0 (77)

DMC040WG — 170 (77)

3.6 Equipment Inspection and Handling

Do not un-crate the equipment until it is close to its final location. All required assemblies are banded and shipped in corrugated containers. If any damage is discovered when the unit is un-crated, report it to the shipper immediately. If any concealed damage is later discovered, report it to the shipper and to your Vertiv representative.

3 S ite Preparation and Equipment Hand ling

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4 INSTALLATION

Refer to the appropriate installation procedures depending the configuration and options of your Liebert® DataMate Thermal Management System.

4.1 Installing Wall Mounted EvaporatorsandChilled Water Units

Unlatch the front cabinet door and remove the screws that secure the cabinet to the chassis. Lift off the cabinet. Eight keyholes (0.50 in. head, 0.22 in. slot) are provided on the back of the unit for mounting on the wall. The unit must be level.

4.1.1 Changing Air Flow Direction

The air discharge grille on the evaporator can be placed in one of three different positions: vertical, horizontal, or 45°.

To change the air flow direction:

1. Remove the front panel using quarter-turn fasteners.

2. Remove the cabinet by removing the four retaining screws, then lift off the cabinet.

3. Remove the left end panel.

4. Remove the grille by sliding it to the left end of the unit.

5. Rotate or invert the grille to change the air discharge direction.

6. Reverse steps 1 through 4, to re-assemble the unit.

4 Inst allation

4.2 Installing Outdoor Condensing Unit forAir CooledSplit Systems

Refer to the appropriate guidelines and drawings when installing an outdoor, condensing unit for an air cooled split system. See Location Considerations for an Outdoor Condensing Unit on page20. Follow all applicable national and local building, electrical and plumbing codes.

4.3 Installing Ceiling Mounted Condensing Units

WARNING! Risk of ceiling collapse and heavy unit falling. Can cause building and equipment damage, serious injury or death. If using a ceiling mounted condensing unit, verify that the supporting roof structure is capable of supporting the weight of the unit(s) and the accessories. See Table 3.5 on page21, for the unit weights. Securely anchor the top ends of the suspension rods and verify that all nuts are tight.

NOTICE

Risk of leaking water/glycol. Can cause equipment and building damage.

4.3.1 Installing Suspension Rods andMounting Ceiling Units

Refer to the Location Considerations on page18 before beginning installation. These instructions apply to indoor air cooled and remote indoor water/glycol condensing units.

NOTE: Follow all national and local building, electrical, and plumbing codes.

• The ceiling and ceiling supports of existing buildings may require reinforcements.

• Four 3/8-in.-16 TPI threaded suspension rods are required and field supplied.

• The factory supplied 3/8-in. 16 TPI hardware kit includes the remaining installation hardware.

• Recommended clearance between ceiling grids and building structural members is the unit’s height plus 3in. (76mm).

To install the suspension rods:

1. Install the four field supplied 3/8-in. 16 TPI threaded rods by suspending them from suitable building structural members so that they will align with the four mounting locations on the unit base.

2. Securely anchor the top ends of the suspension rods with field supplied nuts.

3. Make sure all nuts are tight and locked.

To lift and install the unit on the rods:

1. Using a suitable lifting device that is rated for the weight of the unit (see Unit Weights on page21), raise the unit and pass the threaded rods through the four mounting locations in the unit base.

2. Attach the threaded rods to the flanges using the plain nuts to hold the unit in place as shown in Figure 4.1 on the facing page.

3. Slowly lower the lifting device, making sure that the rods securely hold the weight of the unit.

4. Adjust the plain nuts to distribute the weight of the unit evenly by the rods, making sure that the unit does not rest on the ceiling grid and that the unit is level.

5. Use the Nylock nuts to jam the plain nuts in place as shown in Figure 4.1 on the facing page.

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