Vertiv Mini-Mate User Manual

Liebert®

Mini-Mate™ VariableCapacity ThermalManagementSystems

Installer/User Guide

3, 4 and5 Ton(10.5, 14 and 17.5 kW) Capacity, Ceiling Mounted,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® Min i-Mate™ Install er/User Guide

TABLE OF CONTENTS

1 Important Safety Instructions 1

2 Nomenclature and Components 7

2.1 Mini-Mate Model Number Nomenclature 7

2.2 Component Location 9

3 Pre-installation PreparationandGuidelines 11

3.1 Planning Dimensions 11

3.2 Location Considerations 11

3.2.1 Location Considerations for Outdoor Condensing Unit 12

3.3 Connections and System Setup 12

3.4 Operating Conditions 12

3.4.1 Cooling, Humidification, and Dehumidification 13

3.4.2 Heating 13

3.5 Mini-Mate Unit Weights 13

3.6 Equipment Inspection and Handling 13

4 Piping and Refrigerant Requirements 15

4.1 Refrigerant Piping and Charging 15

4.1.1 Refrigerant Piping Guidelines forAir CooledSystems 16

4.1.2 Piping when Condensing Unit is Above or Below Evaporator 17

4.2 Refrigerant Line Sizes and Equivalent Lengths 18

4.2.1 Refrigerant Charge Requirements forAir Cooled Systems 19

4.2.2 Additional Oil Requirements for Digital Scroll Compressors 20

4.3 Water/Glycol Loop Piping Guidelines 21

4.3.1 Refrigerant Charge Requirements forWater/Glycol Cooled Systems 22

4.3.2 Evacuation and Leak Testing Water/Glycol Cooled Systems 23

4.3.3 Charging Water/Glycol Cooled Systems 26

4.3.4 Optimizing Refrigerant Charge on Water/Glycol Units 27

4.3.5 Documenting Refrigerant Charge on Water/Glycol Cooled Units 27

4.4 Drain and Humidifier Piping 27

4.4.1 Water Supply Line to the Humidifier 28

4.4.2 Drain Line Installation Requirements 28

4.4.3 Condensate Drain Pump Kit 30

5 Electrical Connection Requirements 31

5.1 Low Voltage Electrical Field Connections 32

6 Installation 35

6.1 Installing Ceiling Mounted Units 35

6.1.1 Installing Suspension Rods andMounting Ceiling Units 35

6.2 Installing Air Distribution Components for Evaporators 36

6.2.1 Installing a Filter Box for 3 Ton Models 36

6.2.2 Installing an Air Distribution Plenum for 3 Ton Models 37

6.2.3 Installing a Filter Box for 4 Ton and 5 Ton Models 37

6.2.4 Installing a Bottom Discharge Grille for4 Tonand5 TonModels 37

6.2.5 Guidelines for Ducted Systems 37

7 Checklist for Completed Installation 39

7.1 Moving and Placing Equipment 39

7.2 Electrical Installation Checks 39

7.3 Piping Installation Checks 39

7.4 Other Installation Checks 39

8 Initial Start-up Checks andCommissioning ProcedureforWarrantyInspection 41

9 Maintenance 43

9.1 Filters 44

9.1.1 Filter Replacement 44

9.2 Blower Drive System—EC Fans 45

9.2.1 Fan Impellers and Bearings Maintenance 45

9.2.2 Protective Features 46

9.2.3 Fan Assembly Troubleshooting 46

9.3 Direct Drive Blower System 50

9.3.1 Fan Impellers and Motor Bearings Maintenance 50

9.4 Steam Generating Humidifier Maintenance 50

9.4.1 Operating the Humidifier 51

9.4.2 Replacing the Canister 52

9.4.3 Circuit Board Adjustments 52

9.4.4 Humidifier Troubleshooting 53

9.5 Condensate Drain and Condensate Pump System Maintenance 54

9.5.1 Condensate Drain 54

9.5.2 Condensate Pump 54

9.6 Electric Reheat Maintenance 54

9.7 Thermostatic Expansion Valve (TXV) Maintenance 54

9.7.1 Determining Suction Superheat 54

9.7.2 Adjusting Superheat Setting with the TXV 55

9.7.3 Coaxial Condenser Maintenance (Water/Glycol Cooled Condensers Only) 55

9.7.4 Regulating Valve Maintenance (Water Glycol Cooled Condensers Only) 55

9.7.5 Glycol Solution Maintenance 55

10 Preventive Maintenance Checklist 57

Appendices 61

Appendix A: Technical Support and Contacts 61

Appendix B: Submittal Drawings 63

Vertiv | Liebert® Min i-Mate™ Install er/User Guide

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®Mini-Mate. 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 electric shock. Can cause serious injury or death. The Liebert® iCOM 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 Liebert® iCOM 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 electric shock. Can cause injury or death. Open all local and remote electric power-supply disconnect switches and verify that power is Off with a voltmeter before working within the condensate pump electrical connection enclosure. The Liebert® iCOM™ 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 Liebert®iCOM.

1 Important Safety Instr uctions

WARNING! Risk of over-pressurization of the refrigeration system. Can cause explosive discharge of highpressure 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 circuit from over-pressurization protection. Do not close off any field-installed, refrigerant-line isolation valves 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).

WARNING! Risk of improper moving. Can cause equipment damage, injury or death. Use only lifting equipment that is rated for the unit weight by an OSHA-certified rating organization. The center of gravity varies depending on the unit size and selected options. The slings must be equally spaced on either side of the center of gravity indicator. Unit weights are listed in Table 3.2 on page13.

WARNING! Risk of contact with high-speed rotating fan blades. Can cause serious 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 or on the fan assembly. If control voltage is applied, the fan motor can restart without warning after a power failure. Do not operate the unit with any or all cabinet panels removed.

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 who have been specially-trained in the installation of air-conditioning equipment and who are wearing appropriate, OSHA-approved PPE.

WARNING! Risk of improper wire sizing/rating 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 improper humidifier-canister maintenance. Can cause smoke and fire, 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.

Vertiv | Liebert® Min i-Mate™ Install er/User Guide

CAUTION: Risk of improper moving, lifting and handling. Can cause equipment damage or injury. Only properly trained and qualified personnel should work on this equipment. Evaporator fan modules weigh in excess of 37 lb (17kg). Use proper lifting techniques and wear appropriate, OSHA-approved PPE to avoid injury and dropping the fan module during removal. Equipment used in handling/lifting, and/or installing the fan assembly must meet OSHA requirements. Use handling/lifting equipment rated for the weight of the fan assembly. Use ladders rated for the weight of the fan assembly and technicians if used during installation. Refer to handling/lifting, and/or installation equipment operating manual for manufacturer's safety requirements and operating procedures.

CAUTION: Risk of improper moving, lifting and handling. Can cause equipment damage or injury. Only properly trained and qualified personnel should work on this equipment. Condenser fan modules weigh in excess of 37 lb (17kg). Use proper lifting techniques and wear appropriate, OSHA-approved PPE to avoid injury and dropping the fan module during removal. Equipment used in handling/lifting, and/or installing the fan assembly must meet OSHA requirements. Use handling/lifting equipment rated for the weight of the fan assembly. Use ladders rated for the weight of the fan assembly and technicians if used during installation. Refer to handling/lifting, and/or installation equipment operating manual for manufacturer's safety requirements and operating procedures.

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.

NOTICE

CAUTION: Risk of contact with hot surfaces. Can cause injury. The electronics housing, humidifier components, 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 exposure to harmful noise levels. Can cause hearing injury or loss. Depending on the installation and operating conditions, a sound pressure level greater than 70dB(A) may arise. Take appropriate technical safety measures. Operating personnel must wear appropriate, OSHA-approved PPE and observe all appropriate hearing-protection safety requirements.

Risk of improper power supply connection. Can cause equipment damage and loss of warranty coverage.

Prior to connecting any equipment to a main or alternate power source (for example: back-up generator systems) for start-up, commissioning, testing, or normal operation, ensure that these sources are correctly adjusted to the nameplate voltage and frequency of all equipment to be connected. In general, power source voltages should be stabilized and regulated to within ±10% of the load nameplate nominal voltage. Also, ensure that no three-phase sources are single phased at any time.

1 Important Safety Instr uctions

NOTICE

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

Liebert®Mini-Mate 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.

Risk of improper refrigerant charging. Can cause equipment damage.

Refrigerant charge must be weighed into air-cooled compressorized systems before they are started. Starting digital scroll compressors without proper refrigerant charging can cause the compressors to operate at less than 5°F (–15°C) evaporator temperature and at less than 55psig (379kPa). Operation for extended periods at less than 55psig (379kPa) can cause premature compressor failure.

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.

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.

Vertiv | Liebert® Min i-Mate™ Install er/User Guide

NOTICE

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.

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.

NOTICE

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. 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.

1 Important Safety Instr uctions

NOTICE

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.

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

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.

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.

NOTICE

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.

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.

Vertiv | Liebert® Min i-Mate™ Install er/User Guide

2 NOMENCLATURE AND COMPONENTS

This section describes the model number for Liebert® Mini-Mate units and components.

2.1 Mini-Mate Model Number Nomenclature

The tables below describe each digit of the 25-digitconfigurationnumber. The 14-digit model number consists of the first 10 digits and last 4 digits of the configuration number.

Model Number Digit Definitions below describes each digit of the model number.

Table 2.1 Mini-Mate 25-Digit Configuration Number

ModelNumber Digits 1 to 10 ModelDetails ModelNumber Digits11to14

1 2 3 4 5 6 7 8 9 10 1 1 12 13 14 15 16 1 7 18 19 20 21 22 23 24 25

M T 0 6 0 H E 1 A 0 S H 2 0 D 0 U 0 P 0 0 A # # #

Table 2.2 Model Number Digit Definitions

Digit andDescription

Digits 1 and 2 = Unit Family

MT = Mini-Mat e Ceil ing System

Digits 3, 4, 5 = Nominal Cooli ng C apaci ty

036 = 36kBtuh

048 = 48kBtuh

060 = 60 kBtuh

Digit 6 = Air Di rect ion and Discharge

H = H oriz onta l air flow

Digit 7 = System ty pe

E = Split System evapora tor

Digit 8 = Fan type

1 = Dir ect Dri ve EC mot or (va ria ble-speed)

Digit 9 = Supply power

A = 460V / 3ph / 60 Hz

B = 575V / 3ph / 60 Hz (0 48 a nd 060 models only )

C = 208V / 3ph / 60Hz (0 48 and 060 models only)

D = 230V / 3ph / 60Hz (0 48 and 060 models only)

P = 20 8-230 /1ph/60Hz (0 36 model only)

Y = 20 8-230 /3ph/60 Hz (0 36 model onl y)

Digit 10 = Evaporator T ype

0 =Spli t System evapora tor

Digit 11 = Humidifier

0 = No humidifier

S = Steam-gen caniste r humidifier

2 Nomenclature an d Components

Table 2.2 Model Number Digit Definitions (continued)

Digit andDescription

Digit 12 = Display t ype

H = 9-i n. r emote display, I ntell iSlot -based monitori ng ( 048 and 0 60 models onl y)

1 = 9-in. remote display , iCOM-based monitor ing (036 model only)

Digit 13 = R eheat

0 = No reheat

2 = Elect ri c reheat

5 = SCR reheat ( 048 and 0 60 models only )

Digit 14 = Coi l, Valve, Pr essure

0 = Split Sy stem evaporat or

Digit 15 = H igh-v olta ge options

D = Non-locki ng di sconnect, 5k SCCR ( 048 and 0 60 models onl y)

L = Locking disconnect, 5kA SCCR (0 36 model only)

M = Locking disconnect, 65k SCCR (0 48 a nd 0 60 models onl y)

Digit 16 = Low-vol tage options

0 = None

L = Low vol tage te rminal pac kage (LVTP)

Digit 17 = Monitoring Cards

0 = No card, Intel liSlot onl y (048 and 0 60 models onl y)

U = IS-UNITY- DP card, factor y-i nstall ed (048 a nd 0 60 models only)

B = BACnet, Modbus, SNMP using iCOM board (036 model only)

Digit 18 = Sensors

0 = None

S = Smoke sensor

H = H igh Temperat ure sensor

F = Smoke and high temper atur e sensor

Digit 19 = P acka ging

P = Domesti c

C = Wood cr at e export

Digits 20, 21 = Future use

Digit 22 = Factory configurati on code

A = No SFA’s ( Any Alpha lett er exc ept S)

S = SFA

Digit23-25 = Factory Configuration Number

Vertiv | Liebert® Min i-Mate™ Install er/User Guide

2.2 Component Location

The unit component locations are described in the submittal documents included in the Submittal Drawings on page63.

The following tables list the relevant documents by number and title.

Table 2.3 Component Location Drawings

Document Number Title

DPN004808 Evaporator Unit, 3 Ton

DPN004179 Evaporator Unit, 4 Ton and 5 Ton

2 Nomenclature an d Components

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Vertiv | Liebert® Min i-Mate™ Install er/User Guide

3 PRE-INSTALLATION PREPARATIONANDGUIDELINES

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

Refer to Model Number Digit Definitions on page7, and submittal drawings to determine the type of system being installed and anticipate building alterations, piping and duct work needed.

The unit dimensions, pipe connection locations, and piping schematics are described in the submittal documents included in the Submittal Drawings on page63.

• Confirm that the room is properly insulated and has a sealed vapor barrier.

• For proper humidity control, keep outside or fresh air to an absolute minimum (less than 5% of total air circulated in the room).

• Install the units as close as possible to the largest heat load.

• Allow at least the minimum recommended clearances for maintenance and service. See the appropriate submittal drawings for dimensions.

• We recommend installing a water detection system. Contact your Vertiv representative for information.

3.1 Planning Dimensions

The unit dimensions described in the submittal documents included in the Submittal Drawings on page63.

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

Table 3.1 Dimension Planning Drawings

Document Number Title

DPN004800 Cabinet dimensions, 3 ton DX m odule

DPN004055 Cabinet dimensions, 4 tonand 5 ton DX m odule

Filter and Ducting O ptions

DPN004805 Dimensional data, filter box and duct flange, 3 ton

DPN004807 Dimensional data, air distributionplenum 3 ton

DPN004166 Dimensional data, filter box and duct flange, 4 and 5 ton

DPN004842 Dimensional data, bottom discharge grille, 4 and 5 ton

3.2 Location Considerations

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

The evaporator is usually mounted above the dropped ceiling and must be securely mounted to the roof structure. For ducted systems, the evaporator may be located in a different room. See Guidelines for Ducted Systems on page37 for additional guidelines. For a split system with an air cooled, outdoor condensing unit, the condensing unit may be mounted on the roof or remotely in an outdoor area. See Location Considerations for Outdoor Condensing Unit on the next page for additional guidelines.

Refer to Refrigerant Line Sizes and Equivalent Lengths on page18 for maximum refrigerant line lengths.

3 Pr e-inst allation Preparationand Guidelin es

The ceiling and ceiling supports of existing buildings may require reinforcement. See Mini-Mate Unit Weights on the facing page. Be sure to follow all applicable national and local codes.

For a split system with an indoor condensing unit, the condensing unit may be:

• Installed above the suspended ceiling near the evaporator.

• In any remote indoor area, subject to the requirements detailed in Table 4.3 on page17.

Refer to Refrigerant Line Sizes and Equivalent Lengths on page18 for maximum refrigerant line lengths.

Install the ceiling mounted unit over an unobstructed floor space if possible. This will allow easy access for routine maintenance or service. Do not attach additional devices (such as smoke detectors, etc.) to the housing, as they could interfere with the maintenance or service.

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

3.2.1 Location Considerations for Outdoor Condensing Unit

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 groundlevel 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.

Before beginning, refer to Piping and Refrigerant Requirements on page15 for unit placement, piping guidelines, and refrigerant charge requirements for your system.

3.3 Connections and System Setup

• The unit requires a drain, which must comply with all applicable codes. This drain line may contain boiling water. See Drain Line Installation Requirements on page28, for details.

• Electrical service is required for all models. Electrical service must conform to national and local electrical codes. See equipment nameplate for details.

• Plan the routing of wiring, piping, and duct work to the unit. Refer to the appropriate piping connection location drawings, piping schematics, and electrical connection drawings for your system in .

NOTE: Seal openings around piping and electrical connection to prevent air leakage. Failure to do so could reduce the unit’s cooling performance.

3.4 Operating Conditions

The Liebert® Mini-Mate must be operated in a conditioned space within the operating envelope that ASHRAE recommends for data centers. Operating the Mini-Mate outside of this envelope can decrease equipment reliability. Refer to ASHRAE’s publication, “Thermal Guidelines for Data Processing Environments.”

Vertiv | Liebert® Min i-Mate™ Install er/User Guide

3.4.1 Cooling, Humidification, and Dehumidification

For operation in the Cooling, Humidification, or Dehumidification modes, the Liebert® Mini-Mate unit’s return air requirements for proper unit operation are:

• Maximum dew point of 59°F (15°C)

• Minimum 65°F (20°C)DB

• Maximum 85°F (29.4°C) DB

3.4.2 Heating

For operation in the Heating mode, the Liebert® Mini-Mate unit’s return air requirements for proper unit operation are:

• Maximum humidity: less than 80% RH and less than 64°F (17.8°C) dew point.

• Maximum dry bulb of 80°F (27°C)

3.5 Mini-Mate Unit Weights

Table 3.2 Mini-Mate Unit Weights

Model# Weight, lb(kg)

MT036 328 (149)

MT048* 498 (226)

MT060* 498 (226)

* for 57 5-V units, add 32lb (14.5kg)

3.6 Equipment Inspection and Handling

SAFETY INFORMATION

WARNING! Risk of improper moving, lifting, or handling of the unit. Can cause equipment damage, injury or death. Read all of the following instructions and verify that all lifting and moving equipment is rated for the weight of the unit before attempting to move, lift, remove packaging from or prepare the unit for installation. Unit weights are specified in section Mini-Mate Unit Weights above.

NOTICE

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.

3 Pr e-inst allation Preparationand Guidelin es

NOTICE

Risk of improper storage. Keep the unit upright, indoors and protected from dampness, freezing temperatures and contact damage.

Upon arrival of the unit and before unpacking:

• Verify that the labeled equipment matches the bill of lading.

• Carefully inspect all items for visible or concealed damage.

• Report damage immediately to the carrier and file a damage claim with a copy sent to Vertiv or to your sales representative.

Equipment Recommended for Handling the Unit:

• Forklift

• Pallet jack

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4 PIPING AND REFRIGERANT REQUIREMENTS

All fluid and refrigeration connections to the unit, with the exception of the condensate drain and humidifier supply line, are sweat copper. Factory installed piping brackets must not be removed. Field installed piping must be installed in accordance with local codes and must be properly assembled, supported, isolated, and insulated. Avoid piping runs through noise sensitive areas, such as office walls and conference rooms.

Refer to specific text and detailed diagrams in this manual for other unit specific piping requirements.

The following pipe connections are required:

• Refrigerant piping connections between the evaporator unit and the condensing unit.

• A drain line from the unit or a drain line from the optional condensate pump (if applicable).

• A drain line from the secondary drain pan (if applicable).

• A water supply line to the optional humidifier (if applicable).

• On water/glycol systems: connections to a water or glycol loop. See Water/Glycol Loop Piping Guidelines on page21, for additional requirements.

The pipe connection locations, piping general arrangement, and schematics are described in the submittal documents included in the Submittal Drawings on page63.

The following tables list the relevant documents by number and title.

Table 4.1 Piping General Arrangement Drawings

Document Number Title

Air Cooled System

DPN004060 Pipingarrangement, 3, 4 and 5 ton split system

Water/Glycol CooledSystem

DPN004893 Piping arrangement, 3, 4 and 5 ton split system

Table 4.2 Piping Connection Drawings

Document Number Title

DPN004801 Primary connection loca tions, 3 ton DX m odule

DPN004806 Condensate pump c onnection locations, 3 ton

DPN004056 Primary connection locations, 4 ton and 5 ton DX module

DPN004077 Condensate pump connection locations, 4 ton and 5 ton

4.1 Refrigerant Piping and Charging

4 Pipin g and Refrigeran t Requirements

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.

NOTICE

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

4.1.1 Refrigerant Piping Guidelines forAir CooledSystems

• Evaporators and condensing units ship with an inert gas holding charge. Do not vent the evaporator and condensing unit until all refrigerant piping is in place, ready for connection to the unit and condensing unit.

• Use copper piping with a brazing alloy with a minimum temperature of 1350°F (732°C), such as Sil-Fos. Avoid soft solders, such as 50/50 or 95/5.

• Use a flow of dry nitrogen through the piping during brazing to prevent formation of copper oxide scale inside the piping. When copper is heated in the presence of air, copper oxide forms. POE oils will dissolve these oxides from inside the copper pipes and deposit them throughout the system, clogging filter driers and affecting other system components.

• A pure dry nitrogen flow of 1-3 ft3/min (0.5-1.5 l/s) inside the pipe during brazing is sufficient to displace the air. Control the flow using a suitable measuring device.

• Ensure that the tubing surfaces to be brazed are clean and that all burrs have been removed from the ends of the tubes.

• Ensure that all loose material has been cleaned from inside the tubing before brazing.

• Protect all refrigerant line components within 18in. (460mm) of the brazing site by wrapping them with a wet cloth or with a suitable heat sink compound.

• Isolate piping from building using vibration isolating supports.

• When sealing openings in walls and to reduce vibration transmission, use a soft, flexible material to pack around the tubes to prevent tube damage.

• When installing remote condensing units above the evaporator, the suction gas lines should be trapped at the evaporator. These traps will retain refrigerant oil in the off cycle. When the unit starts, oil in the traps is carried up the vertical risers and returns to the compressors. For rises over 25ft (7.6m), trap every 20ft (6m)or evenly-divided.

• Consult factory if piping run exceeds 150ft(46m) equivalent length.

• Keep piping clean and dry, especially on units with R-410A refrigerant.

• Avoid piping runs through noise sensitive areas.

• Do not run piping directly in front of discharge air stream.

• Refrigerant oil – do not mix oil types.

Refer to ASHRAE Refrigeration Handbook for general, good practice refrigeration piping.

NOTE: All indoor and outdoor suction line piping must have 1/2 in. minimum of insulation. All outdoor insulation must be UV and ozone resistant.

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NOTE: Proper safety equipment and proper refrigeration tools are required when working with R-410A refrigerant. Check unit serial tag for correct refrigerant type before topping off or recharging a system.

NOTE: Refrigerant R-410A uses a POE (polyolester) lubricant. The refrigerant must be introduced and charged from the cylinder only as a liquid.

NOTE: When installing field piping, you must take care to protect all refrigerant lines from the atmosphere especially when using refrigerants with POE oils. Do not allow the piping to stand open to air for more than 15minutes. Units designed for R-410A have a compressor that contains POEoil, which quickly absorbs water from the air. The longer that the refrigerant piping is left open to air, the harder it will be to fully evacuate the system. If left open too long, the POE oil may require replacement to achieve the required vacuum level.

• Refer to Refrigerant Line Sizes and Equivalent Lengths on the next page, for recommended refrigerant piping sizes based on equivalent pipe lengths.

• Refer to the condensing unit's Installer/User Guide for the complete charging procedure of the system.

4.1.2 Piping when Condensing Unit is Above or Below Evaporator

Refer to Table 4.3 below for the maximum vertical rise/fall between condensing unit and evaporator.

When installing remote condensing units above the evaporator, trap the suction gas line at the evaporator as shown in Figure 4.1 below. Traps recommended at the base of riser exceeding 5 ft. (1.5 m) and every 20 ft. (6 m) of vertical rise. This trap will retain refrigerant oil during the "Off" cycle. When the unit starts, oil in the trap is carried up the vertical riser and returns to the compressor.

When installing remote condensing units below the evaporator, trap the suction gas line with an inverted trap the height of the evaporator as shown in the following figure. This prevents refrigerant migration to the compressor during "Off" cycles.

Table 4.3 Pipe Length and Condensing Unit Elevation Relative to Evaporator

Maximum Equivalent Pipe Length, ft. (m)

150 (45) 50 (15) 15 (4.6)

Maximum CondensingUnit Level Above

Evaporator, ft. (m)

Maximum CondensingUnit Level Below

Evaporator, ft. (m)

Figure 4.1 Refrigerant Piping Diagram When Condenser is Above or Below Evaporator

NOTE: Any horizontal pipe must be pitched down toward the condensing unit at a minimum rate of 1/2 in. (13 mm) per 10 ft. (3 mm) to assure oil return to compressor.

4 Pipin g and Refrigeran t Requirements

4.2 Refrigerant Line Sizes and Equivalent Lengths

The following tables list the information required to field install the refrigerant piping for the system.

Table 4.4 Recommended Refrigerant Line Sizes, O.D.cubyEquivalentLength

3 Ton 4 Ton 5 Ton

Equivalent Length, ft (m)

50 (15) 7/8 1/2 7/8 1/2 1-1/8 1/2

75 (23) 7/8 1/2 1-1/8 1/2 1-1/8 5/8

100 (30) 7/8 1/2 1-1/8 5/8 1-1/8 5/8

125 (38) 7 /8 1/2 1-1/8¹ 5/8 1-1/8 5/8

150 (45) 7/8 1/2 1-1/8 5/8 1 -1/8 5/8

Consult factor y for proper line sizing for runs l onger than maximum equival ent length shown.

1.Use one li ne size smaller on suction lines for v ert ica l risers.

Source: DPN000 788 Rev. 13

Suction Liquid Suction Liquid Suction Liquid

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4.2.1 Refrigerant Charge Requirements forAir Cooled Systems

To calculate the charge requirements:

1. Determine the charge for your units by model number from the following tables.

2. Determine the charge for the piping by line size and length.

3. Add these all together to obtain the total refrigerant charge for your system.

Table 4.5 Indoor Evaporator Approximate R-410ARefrigerant Charge

Model# Charge, lb (kg)

MT036HE 1 (0.45)

MT048HE 2.2 (1.0)

MT060HE 2.2 (1.0)

Table 4.6 Interconnecting Piping Refrigerant Charge for R-410A using Type L Copper Tube

Line Size,

O.D., in.

3/8 3.2 (1.4) —

1/2 5. 9 (2.7) 0.2 (0.1 )

5/8 9.6 (4.3) 0.4 (0.2)

LiquidLine, lb/100ft (kg/30m) Suction Line, lb/100ft (kg/30m)

3/4 14.3 (6.4) 0.6 (0.3)

7/8 19.8 (8.8) 0.8 (0.4)

1-1/8 33. 8 (15.1) 1.4 (0.6)

1-3/8 51.5 (23.0) 2.1 (1.0 )

Source:DPN003099 Rev. 1

Table 4.7 PFD Condensing Unit R-410A Refrigerant Charge

Model# Charge, lb(kg)

PFD037A-*L1 13.4 (6.1)

PFD037A-*H1 27 (12.2)

PFD054A-*L1 27 (12.2 )

PFD067A-*L1 27 (12.2)

PFDZ67A-*L1 57 (25.8)

PFD067A-*H1 57 (25.8)

4 Pipin g and Refrigeran t Requirements

4.2.2 Additional Oil Requirements for Digital Scroll Compressors

NOTICE

Risk of improper compressor lubrication. Can cause compressor and refrigerant system damage.

Failure to use oil types, viscosities and quantities recommended by the compressor manufacturer may reduce compressor life and void the compressor warranty.

• Do not mix polyolester (POE) and mineral-based oils.

• Do not mix oils of different viscosities.

• Consult your Vertiv sales representative, visit https://www.Vertiv.com/en-us/support/, or contact the compressor manufacturer if questions arise.

System charges may require additional oil charge to be added. See Table 4.8 below, for the amount required for various system charge levels.

After the system has been fully charged with refrigerant, use a hand pump to add the additional oil at the suction side of the system while the system is running.

On the tag marked “Oil Added Field Service Record,” attached to each compressor, record the date the oil was added and the amount of oil added.

Table 4.8 Additional Oil Required per Refrigerant

Charge

3 Ton 4 Ton 5 Ton

Refrigerant System

Charge per Circuit,

lb (kg)*

<40 (18.1) 0 0 0

40 (18.1) 4 (120) 4 (120) 6 (180)

50 (22.7) 6 (180) 6 (180) 9 (270)

60 (27.2) 8 (240) 8 (240) 12 (350)

70 (31.8) 10 (300) 10 (300) 15 (440)

80 (36.3) 12 (350) 12 (350) 18 (530)

* System Charge = indoor unit + condensing unit + refrigerant lines.

For system charges over 80lb. (36.3 kg), consult your Vertiv representative.

Source: DP N003950 Rev 5.

Additional Oil Required Per Circuit, oz (ml)

Table 4.9 Compressor Oil types for R-410A Refrigerant

Compressor Type Oil Type

Copeland Digital Scroll POE Oil - ISO 32 Centistoke Viscosity

1. Use CopelandP OE Oil ULTRA 32-3MAF or other Copeland approved oils.

Source: DP N003950. Rev. 5

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4.3 Water/Glycol Loop Piping Guidelines

WARNING! Risk of improper piping installation, leak checking, fluid chemistry and fluid maintenance can cause equipment damage and personal injury. Installation and service of this equipment should be done only by qualified personnel who have been specially trained in the installation of air conditioning equipment and who are wearing appropriate, OSHA approved PPE.

NOTICE

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

When the cooling unit or piping 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. Do not use galvanized pipe.

NOTICE

Risk of piping system corrosion and freezing fluids. Can cause leaks resulting in equipment and expensive building damage. Cooling coils and piping systems are at high risk of freezing and premature corrosion. Fluids in these systems must contain an inhibitor to prevent premature corrosion.

The system coolant fluid must be analyzed by a competent fluid treatment specialist before start up to establish the inhibitor level and evaluated at regularly scheduled intervals throughout the life of the system to determine the pattern of inhibitor depletion. The fluid complexity and variations of required treatment programs make it extremely important to obtain the advice of a competent and experienced fluid treatment specialist and follow a regularly scheduled coolant fluid system maintenance program.

Fluid chemistry varies greatly 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 coolant fluid used must be considered, because 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 coolant fluid must be treated and circulating through the system continuously to prevent the buildup of deposits and/or growth of bacteria. Proper inhibitor maintenance must be performed to prevent corrosion of the system.

Consult fluid manufacturer for testing and maintenance of inhibitors.

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

Vertiv recommends 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.

4 Pipin g and Refrigeran t Requirements

NOTICE

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.

• Use copper piping with a brazing alloy with a minimum temperature of 1350°F (732°C), such as Sil-Fos. Avoid soft solders, such as 50/50 or 95/5.

• Follow local piping codes and safety codes.

• Qualified personnel must install and inspect system piping.

• The water/glycol cooled system will operate in conjunction with a cooling tower, city water or drycooler.

• Contact a local water consultant regarding water quality, corrosion protection and freeze protection requirements.

• Install manual shut-off valves at the supply and return line to each unit to permit routine service and emergency isolation of the unit.

• When the fluid quality is poor, we recommend installing a 16-20# mesh Y-strainer filter in the supply line to extend the service life of the coaxial condensers. These filters must be easily replaced or cleaned.

• Install 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.

Coolant Regulating Valve Requires No Adjustment

Water/glycol cooled units include a coolant flow regulating valve that is factory adjusted and should not need field adjustment.

Contact Vertiv technical support before making any adjustments.

4.3.1 Refrigerant Charge Requirements forWater/Glycol Cooled Systems

To calculate the charge requirements:

1. Determine the charge for your units by model number from the following tables.

2. Determine the charge for the piping by line size and length.

3. Add these all together to obtain the total refrigerant charge for your system.

Table 4.10 Water/Glycol, Indoor Condenser R-410A Refrigerant Charge

Model# Charge, lb(kg)

MTC38W 4.2 (1.9)

MTC55W 4.2 (1.9)

MTC69W 4.2 (1.9)

Vertiv | Liebert® Min i-Mate™ Install er/User Guide

Table 4.11 Indoor Evaporator Approximate R-410ARefrigerant Charge

Model# Charge, lb (kg)

MT036HE 1 (0.45)

MT048HE 2.2 (1.0)

MT060HE 2.2 (1.0)

Table 4.12 Interconnecting Piping Refrigerant Charge for R-410A Using Type L Copper Tube

Line Size,

O.D., in.

3/8 3.2 (1.4) —

1/2 5. 9 (2.7) 0.2 (0.1 )

5/8 9.6 (4.3) 0.4 (0.2)

3/4 14.3 (6.4) 0.6 (0.3)

7/8 19.8 (8.8) 0.8 (0.4)

1-1/8 33. 8 (15.1) 1.4 (0.6)

1-3/8 51.5 (23.0) 2.1 (1.0 )

Source:DPN003099 Rev. 1

LiquidLine, lb/100ft (kg/30m) Suction Line, lb/100ft (kg/30m)

4.3.2 Evacuation and Leak Testing Water/Glycol Cooled Systems

For proper leak check and evacuation, you must open all system valves and account for all check valves, see Figure 4.2 on the next page.

4 Pipin g and Refrigeran t Requirements

Figure 4.2 Valves and Connections for Water/Glycol Condensing Unit

Item Description

1 Suction line

2 Schrader port with v alve core

3 Apply a manifold gauge hose on the suction line and discharge line Schrader port.

4 2-stage scroll compressor

5 High-pressure switch

6 Tube-in-tube condenser

7 Water/Glycol supply line

8 2-way water regulating va lve

9 Water/Glycol return line

10 Fluid supply to unit

11 Fluid return from unit

12 Hose bibs (required, field supplied)

13 Shut-off valves (required, field supplied)

14 Liquidline

Vertiv | Liebert® Min i-Mate™ Install er/User Guide

Item Description

15 3-way water regulating valve (optional)

To evacuate and leak test the system:

1. Connect a manifold gauge hose on the discharge and suction line Schrader ports, open the service valve, and place a 150Psig(1034kPa)charge of dry nitrogen with a tracer of refrigerant, then check the system for leaks with a suitable leak detector.

2. After completion of leak testing, release the test pressure, (observe local code) and pull an initial deep vacuum of 500microns on the system with a suitable pump.

3. After fourhours, check the pressure readings and, if they have not changed, break vacuum with dry nitrogen. Pull a second and third vacuum to 500 microns or less. Re-check the pressure after twohours. When the three checks are complete, proceed to Charging Water/Glycol Cooled Systems on the next page.

4 Pipin g and Refrigeran t Requirements

+ 65 hidden pages

Vertiv Mini-Mate User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 IMPORTANT SAFETY INSTRUCTIONS

2 NOMENCLATURE AND COMPONENTS

2.1 Mini-Mate Model Number Nomenclature

2.2 Component Location

3.1 Planning Dimensions

3.2 Location Considerations

3.2.1 Location Considerations for Outdoor Condensing Unit

3.3 Connections and System Setup

3.4 Operating Conditions

3.4.1 Cooling, Humidification, and Dehumidification

3.4.2 Heating

3.5 Mini-Mate Unit Weights

3.6 Equipment Inspection and Handling

4 PIPING AND REFRIGERANT REQUIREMENTS

4.1 Refrigerant Piping and Charging

4.1.2 Piping when Condensing Unit is Above or Below Evaporator

4.2 Refrigerant Line Sizes and Equivalent Lengths

4.2.2 Additional Oil Requirements for Digital Scroll Compressors

4.3 Water/Glycol Loop Piping Guidelines

4.3.2 Evacuation and Leak Testing Water/Glycol Cooled Systems