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12 MAINTENANCE

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 factory-supplied

disconnect switch is inside the unit. The line side of this switch contains live high-voltage. 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 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.

The Liebert® DSE is a single component in the facility heat-removal system. The system includes air

distribution (raised floors, duct systems), outdoor heat rejection (condensers, pumps) and indoor cooling

and humidity loads (equipment load, location, outside air infiltration). Proper application and maintenance

of the entire system is critical to the life and reliability of the thermal-management units.

•

Good maintenance practices are essential to minimizing operation costs and maximizing

product life.

•

Read and follow monthly and semi-annual maintenance schedules included in this manual.

These MINIMUM maintenance intervals may need to be more frequent based on site-specific

conditions.

•

See the Liebert®iCOM™ user manual, SL-31075, for instructions on using the controller to

predict some service maintenance intervals.

•

We recommend the use of trained and authorized service personnel, extended service

contracts and factory-specified replacement parts. Contact your Vertiv sales representative.

12.1 Filters

NOTICE

Risk of improper filter installation. Can cause filter collapse and airflow reduction.

To maximize the performance and reliability of the equipment, use only Vertiv filters. Contact your Vertiv

representative to order replacement filters.

Verify that filters are installed and positioned so the air-flow direction marked on the filter is the same

direction as unit air flow.

12 Maintenance

Содержание Liebert DSE

Страница 1: ...Liebert DSE Thermal Management System System Design and User Manual Downflow 250 kW 71 ton Capacity 50 and 60 Hz ...

Страница 2: ...isclaims 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 ...

Страница 3: ...frigerant Requirements 37 8 1 Drain Fluid Piping 37 8 1 1 Field installed Gravity fed Drain Line Requirements 38 8 1 2 Condensate pump Drain Line Requirements 38 8 2 Refrigerant Piping and Charging 39 8 2 1 Refrigerant Piping Guidelines for Air cooled Systems 40 8 2 2 Piping Layout and Condenser Positioning 40 8 2 3 Refrigerant Line Sizes and Equivalent Lengths 41 8 2 4 Refrigerant Charge Requirem...

Страница 4: ...nsion Valve EEV Maintenance 57 12 5 Compressor Maintenance 57 12 5 1 Compressor Oil 57 12 5 2 Rotalock Valve 58 12 5 3 Replacement Compressors 58 12 5 4 Compressor Motor Burnout 58 12 5 5 Unloading Solenoid s on a Digital scroll Compressor 58 12 5 6 Replacing the Compressor 59 12 6 Evaporator Coil 59 12 7 Air Cooled Condenser Maintenance 60 13 Preventive Maintenance Checklist 61 Appendices 65 Appe...

Страница 5: ...ll and open a remote disconnect switch Refer to unit electrical schematic Follow all local codes WARNING Risk of electric shock Can cause serious 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 the component electric connection enclosures Fan motor controls can maintain an electric charge for 10...

Страница 6: ...e 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 CAUTION Risk of contact with sharp edges splinters and exp...

Страница 7: ...t 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 NOTICE Risk of oil contamination with water Can cause equipment damage Liebert DSE systems require t...

Страница 8: ...talled 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 cause an external trap NOTICE 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 pa...

Страница 9: ...th the Waste Electrical and Electronic Equipment WEEE Directive 2012 19 CE The crossed out wheelie bin symbol is placed on this product to encourage you to recycle wherever possible Please be environmentally responsible and recycle this product through your recycling facility at its end of life Do not dispose of this product as unsorted municipal waste Follow local municipal waste ordinances for p...

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Страница 11: ...NominalCooling Capacity kW 250 250 kW Digit 6 Air Discharge D Downflow bottom discharge H Downflow horizontaldischarge Digit 7 System Type P Air cooled Econ O Phase ready Digit 8 Air flow Fan Type 3 Direct drive VFD plenum Digit 9 Voltage A 460 V 3 ph 60 Hz B 575 V 3 ph 60 Hz G 415 V 3 ph 50 Hz For applications that require less than 400 V 3 ph 50 Hz please consult your localsales office for assis...

Страница 12: ...git 18 Option packages 0 None L Option package 1 low voltage terminalpackage R Remote humidifier contact Digit 19 Monitoring B Base comms and connectivity Digit 20 Sensors 0 None H High temperature sensor C Compressor overload sensors A Compressor high temperature sensors Digit 21 Packaging P Domestic C Export Digit 22 24 Factory Configuration Number Digit 25 Configuration Code A 1 S Special featu...

Страница 13: ...he following table lists the relevant documents by number and title Document Number Title DPN004368 Component Location Typical Downflow Horizontal discharge Models DA250 DPN004258 Component Location Typical MCV440 8 fan DPN004260 Component Location Typical MCV440 16 fan Table 2 3 Component location Drawings 2 Nomenclature and Components 13 ...

Страница 14: ...2 3 Blower Configurations Figure 2 1 Downflow horizontal discharge blower configurations with EC fans Vertiv Liebert DSE System Design and User Guide 14 ...

Страница 15: ...Figure 2 2 Downflow bottom discharge blower configurations with EC fans 2 Nomenclature and Components 15 ...

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Страница 17: ...flow See Table 3 4 on the next page for values Table 3 1 Capacity data for 60 Hz Downflow horizontal discharge models Air side T Supply air Temperature Return air Temperature Outdoor Temperature Air flow6 Net Sensible Capacity Input Power SCOP F F C F C F C CFM CMH kW kBtu hr kW 20 70 21 90 32 95 35 36 000 61 165 220 751 74 1 3 0 74 23 94 34 95 35 38 000 64 560 231 788 77 4 3 0 25 70 21 95 35 95 3...

Страница 18: ...e Drain w opt Condensate Pump OD 1 2 in O D Cu Condensate Drain FTP 3 4 in Liquid Line O D Cu 1 3 8 in O D Cu Hot Gas Line O D Cu 1 5 8 in O D Cu Table 3 3 Physical data for 60 50 Hz models Air flow at 0 1 in 25 Pa ESP Air flow calibration voltage CFM CMH 60 Hz 50 Hz 25 000 42480 4 66 5 57 26 000 44179 4 83 5 78 27 000 45878 5 00 5 98 28 000 47578 5 17 6 19 29 000 49277 5 34 6 39 30 000 50976 5 52...

Страница 19: ... 50 Hz 40 000 67968 7 23 8 65 41 000 69667 7 41 8 86 42 000 71366 7 58 9 07 43 000 73066 7 75 9 27 44 000 74765 7 92 9 48 Maximum air flow calibration voltage must be adjusted based on the required air flow Table 3 4 Air flow Calibration Voltage continued 3 System Data 19 ...

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Страница 21: ... 5352 8 ft 6 in x 29 ft x 9 ft 6 in 2591 x 8839 x 2896 12 300 5579 9 ft 5 in x 29 ft 4 in x 9 ft 6 in 2870 x 8941 x 2896 10 730 4867 10 810 4904 Table 4 2 MCV Condenser unit domestic and export shipping dimensions and weights 4 2 Planning Dimensions The unit floor stand and plenum dimensions are described in the submittal documents included in the Submittal Drawings on page 67 The following table ...

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Страница 23: ...cuments included in the Submittal Drawings on page 67 5 2 Connections and System Setup The unit requires a drain which must comply with all applicable codes This drain line may contain boiling water See Field installed Gravity fed Drain Line Requirements on page 38 for details If seismic requirements apply consult your Vertiv representative for information about a seismic rated floor stand NOTE Se...

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Страница 25: ...on or off 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 Keep the unit upright indoors ...

Страница 26: ...at the fork length is suitable for the skid length Skid length is 128 in 3251 mm If the unit must be lifted higher than 2 in 51 mm to 4 in 102 mm all personnel not directly involved in moving the unit must be 20 ft 5 m or farther from the unit Always refer to the location of the center of gravity indicators when lifting the unit see Figure 6 1 below Figure 6 1 Center of gravity indicator Vertiv Li...

Страница 27: ...moved for immediate installation 1 Remove the bag from the unit when ready to remove the skid and install the unit Figure 6 2 Unpacking the Unit Item Description 1 Remove exterior wrap from unit 2 Remove corner and side packaging planks 3 Leave the bag on the unit untilready to install 6 Equipment Inspection and Handling 27 ...

Страница 28: ...uld occur to the panels and or base of the unit 1 Referring to Figure 6 3 below use a 9 16 in socket driver to remove the lag screws 24 total from the 4 corner brackets to detach the unit from the skid Figure 6 3 Remove corner bracket Vertiv Liebert DSE System Design and User Guide 28 ...

Страница 29: ...o the bottom base inside the door 3 Using the instructions included in the kit install the rigging hardware for lifting the unit from the skid Figure 6 4 below shows an example of one of the eye nuts installed Figure 6 4 Locate the rigging fastener hardware kit 6 Equipment Inspection and Handling 29 ...

Страница 30: ...o the eye nuts installed in Step 3 5 Using the rigging equipment lift the unit from the skid and remove the skid from under the unit see Figure 6 5 below Figure 6 5 Lifting unit and removing skid Vertiv Liebert DSE System Design and User Guide 30 ...

Страница 31: ...on see Figure 6 6 below Figure 6 6 Moving the unit with rigging 6 5 Unpacking and Handling the Fan Section See the Instructions Package Handling Fan Section DA250 document included with the fan section to un crate and handle the fan section 6 Equipment Inspection and Handling 31 ...

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Страница 33: ...3 7 WSA 169 6 OPD 175 415 V 50 Hz FLA 197 WSA 203 3 OPD 225 See Table 9 3 on page 48 for the heat rejection electricaldata 1 For 380 V 50 Hz application consult the factory for SFA Table 7 2 Electrical Data Single point Power DA250 MCV440 PRE 7 2 Electrical Field Connections Three phase electrical service is required for all models Electrical service must conform to national and local electrical c...

Страница 34: ...ate 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 factory supplied disconnect switch is inside the unit The line side of this switch contains live high voltage 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 electrica...

Страница 35: ...t be connected to the unit line voltage terminals in the proper sequence so that the compressors rotate in the proper direction Incoming power must be properly phased to prevent compressors from running backward We recommend checking the unit s phasing with proper instrumentation to ensure that power connections were made correctly We also recommend verifying discharge and suction pressures during...

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Страница 37: ...rain line from the unit A drain line from the secondary drain pan if applicable Refrigerant piping connections between the evaporator unit and the MCV440 heat rejection skid See Refrigerant Piping and Charging on page 39 The pipe connection locations piping general arrangement and schematics are described in the submittal documents included in the Submittal Drawings on page 67 The following tables...

Страница 38: ... must comply with all applicable codes We recommend installing monitored under floor leak detection equipment 8 1 2 Condensate pump Drain Line Requirements NOTICE 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 Installa...

Страница 39: ... 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 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 c...

Страница 40: ...e base of vertical risers over 5 ft 1 5 m and every 20 ft 6 m or evenly divided over the vertical rise The DA250 has internally installed traps on the hot gas lines Pitch horizontal hot gas piping down at a minimum rate of 1 2 in per 10 ft 42 mm per 10 m so that gravity will aid in moving oil in the direction of refrigerant oil flow Consult factory if piping run exceeds 200 ft 61 m linear length o...

Страница 41: ...nt charge requirements for the Liebert DSE connected piping and condenser options System Type Model Outer Circuit lb kg Inner Circuit lb kg Air cooled DA250 25 11 3 25 11 3 System Charge indoor unit MCV440 heat rejection skid refrigerant lines For system charges over 200 lb 90 7 kg consult your Vertiv representative See Table 12 2 on page 57 for the recommended oilfor the system Source DPN003950 R...

Страница 42: ...stem charge levels In addition to oil added based on system charge additional oil is required for discharge line field installed traps Standard formed tube traps are required see Figure 8 1 below and Table 8 9 on the facing page because straight tubes and fittings used as traps require much more oil and the length of the straight tube can vary After the system has been fully charged with refrigera...

Страница 43: ... 7 138 4080 System Charge indoor unit MCV440 heat rejection skid refrigerant lines and is calculated per circuit For system charges over 200 lb 90 7 kg consult your Vertiv representative See 12 5 on page 57 for the recommended oilfor the system Source DPN003950 Rev 5 Table 8 8 Additional Oil Required per Refrigerant Charge Pipe diameter in Oil volume oz ml 1 2 0 2 5 9 5 8 0 4 11 8 3 4 0 6 17 7 7 8...

Страница 44: ... Circuit 1 open the compressor service valves in Circuit 2 If pressure increases in Circuit 2 the system is cross circuited and must be re checked for proper piping If there is no pressure increase repeat step 1 on Circuit 2 3 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 4 After 4 hou...

Страница 45: ...he charge function as many times as needed to complete unit charging NOTE You must establish and maintain a minimum 20 psig 138 kPa for the compressor to operate e Repeat step 7 for Compressor Circuit 2 8 Check the refrigerant level in the refrigerant level sight glasses on each receiver after the unit has been operating for at least 15 minutes NOTE Each receiver at the condenser has 2 sight glass...

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Страница 47: ...red for all condensers at the location of the condenser For the most reliable operation of the system the indoor unit and the MCV condenser should be on the same power source The Liebert DSE system offers an option for a power feed from the active source on the indoor unit to the outdoor condenser This configuration provides the greatest reliability and fastest recovery during power loss or source...

Страница 48: ...tions Field installed piping must be installed according to local codes The pipe connection locations are described in the submittal documents included in the Submittal Drawings on page 67 The following table lists the relevant documents by number and title Document Number Title DPN004208 Connection Locations DA250 DPN004257 Condenser connection data MCV440 Single skid DPN004262 Condenser connecti...

Страница 49: ...ation 10 3 Piping Installation Checks 1 Piping completed to refrigerant loop 2 Piping has been leak checked 3 Additional oil has been added for system charges over 40 pounds 18 1kg per circuit See Additional Oil Requirements for Scroll and Digital scroll Compressors on page 42 4 Piping is properly sized sloped and trapped as shown in the piping schematics 5 Check piping inside and outside of equip...

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Страница 51: ...y trained in the installation of air conditioning equipment and who are wearing appropriate OSHA approved PPE NOTICE Risk of improper electrical connection of three phase input power Can cause backward compressor rotation and unit damage Service technicians should use a gauge set on the system during the initial start up to verify that the three phase power is connected properly Three phase power ...

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Страница 53: ...hen it is apparently not operating and the input wiring is disconnected from the electrical source 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 wea...

Страница 54: ...gh the service access door and locate the supply side air filters in front of the heat exchanger 2 Referring to Figure 12 1 on the facing page remove all 15 filters Remove filter 15 first using the slot at that position Slide filter 14 down to the slot and remove Slide filters 13 through 10 over then down to the slot and remove Slide filters 6 through 9 over to the slot and remove Slide filter 5 u...

Страница 55: ... Vertiv WARNING Risk of electric shock Can cause serious injury or death Open all local and remote electric power supply disconnect switches and verify with a voltmeter that power is off before opening the fan motor electric connection enclosure Use only fully trained and qualified HVAC technicians to replace or perform maintenance on the EC fans WARNING Risk of contact with high speed rotating fa...

Страница 56: ...eneral 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 NOTE Do not assume that the fan blades will not start to spin If the motor is in a fault condition it will safely shut down Once the fault condition is cleared there are certain conditions in which the motor will au...

Страница 57: ...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 NOTE Intermit...

Страница 58: ...rt 3 Back seat 6 System side of valve 12 5 3 Replacement Compressors Replacement compressors are available through your Vertiv sales office If the unit is under warranty the replacement compressor must be obtained from and the original compressor returned to your local Vertiv sales office Compressors are shipped in reusable packaging and the original compressor should be returned in the same packa...

Страница 59: ...fied Body NOTE Release of refrigerant to the atmosphere is harmful to the environment Refrigerant must be recycled or discarded in accordance with federal state and local regulations 1 Attach suction and discharge gauges to access fittings 2 Front seat service valves to isolate the compressor Recover refrigerant using an approved recovery procedure and equipment Use a filter drier when charging th...

Страница 60: ...inhibit airflow Check for bent or damaged coil fins and correct Do not permit snow to accumulate around or under outdoor unit Periodically consider commercial cleaning of coil surface Inspect fans motors and controls for proper operation Check all piping and capillaries for proper support Inspect for leaks Check contactors for pitting Replace if pitted Vertiv Liebert DSE System Design and User Gui...

Страница 61: ...urther information on unit operation We recommend the use of trained and authorized service personnel extended service contracts and factory certified replacement parts Contact your local sales representative for more details Check all that apply Evaporator Filters 1 Check Replace filters 2 Grille area unrestricted 3 Wipe section clean 4 Coil clean 5 Clean condensate pan 6 Clean trap in condensate...

Страница 62: ...s inside compressor box 6 Compressor operation vibration noise 7 Check crank case heater fuses operation 8 Check for refrigerant leaks 9 Suction pressure Circuit 1 _______ Circuit 2 _______ Circuit 3 _______ 10 Discharge Pressure Circuit 1 _______ Circuit 2 _______ Circuit 3 _______ 11 Superheat Circuit 1 _______ Circuit 2 _______ Circuit 3 _______ 12 Low pressure switch cut out Circuit 1 _______ ...

Страница 63: ...ge verification a Outdoor Ambient Temperature __________ b Subcooling __________ c Indoor unit Return air Temperature __________ d Sight glass level if Lee Temp or pumped refrigerant _________ 12 Motor amp draw 1 L1 L2 L3 2 L1 L2 L3 3 L1 L2 L3 4 L1 L2 L3 5 L1 L2 L3 6 L1 L2 L3 7 L1 L2 L3 8 L1 L2 L3 9 L1 L2 L3 10 L1 L2 L3 11 L1 L2 L3 12 L1 L2 L3 13 L1 L2 L3 14 L1 L2 L3 15 L1 L2 L3 16 L1 L2 L3 Lieber...

Страница 64: ...your records Compare readings information to previous maintenance worksheet To locate your local Vertiv representative for Vertiv engineered parts check https www vertivco com en us support or Call 1 800 543 2778 Vertiv Liebert DSE System Design and User Guide 64 ...

Страница 65: ...bert Thermal Management Products 1 800 543 2778 Liebert Channel Products 1 800 222 5877 Liebert AC and DC Power Products 1 800 543 2378 A 2 Locations United States Vertiv Headquarters 1050 Dearborn Drive Columbus OH 43085 USA Europe Via Leonardo Da Vinci 8 Zona Industriale Tognana 35028 Piove Di Sacco PD Italy Asia 7 F Dah Sing Financial Centre 3108 Gloucester Road Wanchai Hong Kong 65 ...

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Страница 67: ...ow HorizontalDischarge DPN004557 Cabinet and Plenum Airflow Schematic DA250 Downflow Bottom Discharge Piping Schematics DPN004476 Piping Schematic DA250 Piping Arrangement Liebert MCV Condenser and EconoPhase Pump Locations DPN003965 Mounting the MCV Condenser EconoPhase Above or at Same Levelas DSE Piping Connections Downflow Units DPN004208 Connection Locations DA250 ElectricalConnections DPN004...

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Страница 69: ... CAN ON SW6 1 2 3 DETAIL 3 JUMPER AND DIPSWTICH LOCATION CONDENSER CONTROL BOARDS FACTORY SET CONDENSER A B SEE SHEET 2 FOR COMPONENT NOTES CABLE NOTES WIRE NOTES CIRCUIT 1 J6 1 3 CAN ON SW6 CAN ON SW6 J6 1 3 CIRCUIT 2 SH 49 1 49 3 230 71 70 DETAIL 2 HEAT REJECTION INTERLOCK B DETAIL 1 CANBUS CABLE CONNECTION A A B 4 3 ECONOPHASE CONTROL BOARDS FACTORY SET SW6 ON CAN 3 1 J6 CIRCUIT 2 SW6 ON CAN CI...

Страница 70: ...RATED TO MEET LOCAL CODES AND CONDITIONS EXAMPLES BELDEN 89207 PLENUM RATED OR ALPHA WIRE 6454 CATEGORY 5 5E OR HIGHER 2 DO NOT RUN IN SAME CONDUIT RACEWAY OR CHASE AS HIGH VOLTAGE WIRING 3 FOR CANBUS NETWORK LENGTHS GREATER THAN 450FT 137M CONTACT LIEBERT FACTORY COMPONENT NOTES 1 COMPONENT APPEARANCE ORIENTATION AND POSITION MAY VARY BETWEEN PRODUCT LINES TERMINAL NAMES REMAIN CONSTANT 2 ALL CIR...

Страница 71: ...A250 with horizontal discharge has internally installed traps on the hot gas discharge line 3 Pitch horizontal hot gas piping at a minimum of inch per 10 feet 42mm per 10m so that gravity will aid in moving oil in the direction of the refrigeration flow 4 Unit piping entrance varies by unit and may be through the top of the unit 5 All indoor and outdoor field refrigerant piping must be insulated i...

Страница 72: ...raps on the hot gas discharge line 3 Pitch horizontal hot gas piping at a minimum of inch per 10 feet 42mm per 10m so that gravity will aid in moving oil in the direction of the refrigeration flow 4 Unit piping entrance varies by unit and may be through the top of the unit 5 All indoor and outdoor field refrigerant piping must be insulated inch minimum All outdoor insulation must be UV and ozone r...

Страница 73: ...O D Cu 1 5 8 O D Cu Liquid Circuit Hot Gas Circuit 114 3 4 2914 84 1 8 2138 1 1 2 Connection Size Opening Top View Bottom View POINT Description Electrical Conn High Volt 117 12 2984 8 1 8 206 1 1 2 2 1 2 Notes 1 Drawing not to scale All dimensions from right corner on service side and have a tolerance of 1 2 13mm 2 Field pitch Condensate Drain line a minimum of 1 8 3 2mm per 12 305mm All units co...

Страница 74: ...Field Electrical Connections A DETAIL A Piping Connections 101 1 4 2572mm 18 11 16 1 2 475mm 13mm 64 11 16 1644mm Center of Box 34 864mm Bottom of Box 19 13 16 504mm Circuit 1 Circuit 2 3 1 2 76mm 13mm Typ 1 5 16 33mm Typ 1 3 16 29mm Typ 1 3 8 Liquid Line Circuit 1 1 3 8 Liquid Line Circuit 2 1 5 8 Hot Gas Line Circuit 1 1 5 8 Hot Gas Line Circuit 2 27 13 16 706mm Bottom of Box 52 1320mm Center of...

Страница 75: ... EC Fans 3 Econophase Pump 4 High voltage customer connection 5 Low voltage customer connection 6 Piping connections Note 1 Piping connections for entire assembly are in one location item 6 2 Electrical connections for entire assembly are located in high voltage customer connection boxes item 4 and low voltage customer connection box item 5 Front 5 4 3 6 1 2 ...

Страница 76: ...Minimum clearance on the Main Unit Disconnect Enclosure shall be 48 1219mm or per local code 2 Recommended minimum 48 1219mm clearance when multiple skids are mounted side by side to ensure proper airflow Contact the factory for other spacing requirements 3 Preliminary assembly weight 5 365 lbs 2 433 kg Main Electrical Box End 101 1 4 2572mm 175 4436mm 111 2819mm ...

Страница 77: ...moved for clarity 2 Four mounting holes and four 3 4 field supplied bolts required to secure skid base assembly to customer support structure Bolt grade to be specified by local requirements A DETAIL A Typ 4 Places 20 508mm 13 330mm 1 5 8 42mm Main Electrical Box End O 3 4 19mm 4 Weep Holes REF O 7 8 22mm 4 Mounting Holes Contact Points 148 15 16 3783mm 97 15 16 2488mm 101 1 4 2572mm 175 4443mm ...

Страница 78: ...High voltage customer connection System 1 8 High voltage customer connection System 2 9 Low voltage customer connection System 1 10 Low voltage customer connection System 2 11 Piping connections Systems 1 2 Note 1 Electrical connections for entire assembly are located in high voltage customer connection boxes items 7 8 and low voltage customer connection box item 9 10 2 Piping connections for enti...

Страница 79: ...e Main Unit Disconnect Enclosure shall be 48 1219mm or per local electrical code 2 Recommended minimum 48 1219mm clearance when multiple skids are mounted side by side to ensure proper airflow Contact the factory for other spacing requirments 3 Dry weight 10 550 lbs 4 785 kg Shipping weight 11 580 lbs 5 253 kg Main Electrical Box End System 1 System 2 101 1 4 2572mm 350 8892mm 111 2819mm ...

Страница 80: ...to secure skid base assembly to customer support structure Bolt grade to be specified by local requirements Underside of Unit Coil and Fans removed for clarity A DETAIL A Typical 4 Places 20 508mm 13 331mm 350 8892mm 101 1 4 2572mm O 7 8 22mm 8 Mounting Holes 1 5 8 41mm 26 1 4 667mm 97 15 16 2488mm Typ Main Electrical Box End 148 7 8 3782mm 148 7 8 3782mm O 7 8 22mm TYP 8 Mounting Holes Contact Po...

Страница 81: ...1 4 2572mm 52 1320mm CENTER OF BOX 56 3 16 1427mm CENTER OF BOX 64 11 16 1644mm CENTER OF BOX 69 3 16 1758mm CENTER OF BOX 6 5 8 1 2 168mm 13mm 27 1 2 699mm BOTTOM OF BOX 34 864mm BOTTOM OF BOX 19 11 16 501mm LOW VOLTAGE CUSTOMER CONNECTION SYSTEM 2 LOW VOLTAGE CUSTOMER CONNECTION SYSTEM 1 3 1 2 76mm 13mm TYP 1 5 8 HOT GAS SYSTEM 2 CIRCUIT 2 1 11 16 42mm TYP 1 5 8 HOT GAS SYSTEM 2 CIRCUIT 1 1 5 8 ...

Страница 82: ... TB3 P71 P72 P74 P64 E5 P67 P66 P11 P12 P21 P20 P13 P7 P76 P95 P100 P75 2 RS485 ETHERNET SITE AND BMS COMMUNICATION CONNECTIONS iCOM MICROPROCESSOR AND I O BOARD ETHERNET CABLE FIELD SUPPLIED TB3 P 2 DETAIL A 1 2 A UNIT TO UNIT NETWORKING SWITCH FIELD SUPPLIED P95 DVI D CABLE CONNECTION TO 7 INCH ICOM DISPLAY P100 POWER SUPPLY TO 7 INCH ICOM DISPLAY ...

Страница 83: ...0 P13 P7 P76 P95 P100 P75 2 iCOM MICROPROCESSOR AND I O BOARD TB3 P71 P72 P74 P64 E5 P67 P66 P11 P12 P21 P20 P13 P7 P76 P95 P100 P75 2 iCOM MICROPROCESSOR AND I O BOARD NOTE For dual unit network configurations only P95 DVI D CABLE CONNECTION TO 7 INCH ICOM DISPLAY P100 POWER SUPPLY TO 7 INCH ICOM DISPLAY P95 DVI D CABLE CONNECTION TO 7 INCH ICOM DISPLAY P100 POWER SUPPLY TO 7 INCH ICOM DISPLAY ...

Страница 84: ...EBERT DSE Front View Data Hall Side Top View For Unit Disassembly Data Refer to DPN004369 61 1550mm Fan Section 65 1 8 1654mm Louvers 59 1499mm Louver Section Rear View Service on Gallery Side Notes 1 Louvers in non raised floor application 118 3 8 3007mm Louvers 44 3 8 1127mm 134 1 8 3406mm 83 1 2 2122mm 120 1 8 3050mm ...

Страница 85: ...4 AIRFLOW SCHEMATIC LIEBERT DSE Return Air from Data Center Supply Air to Data Center Front Data Hall Side 114 1 8 2899mm 62 1575mm 18 3 4 475mm 7 3 8 186mm 3 75mm 53 1 8 1348mm Outside of Duct Flange 3 1 2 90mm 115 3 8 2929mm Outside of Duct Flange 2 3 8 60mm 60 1524mm Fan Section 1 3 4 44mm Duct Flange ...

Страница 86: ...IAGRAM LIEBERT DSE 1 Blower Motor Typical 3 2 Line Reactor Transformers Typical 3 3 Evaporator Coil 4 Air Filters 5 Condensate Pump optional 6 Compressor Compartment 7 Electric Panel 8 575v Step Down Transformer 9 VFD Assemblies Typical 3 1 4 5 6 7 8 3 Filter removed for clarity 2 2 2 9 9 9 ...

Страница 87: ...uired for systems with or without EconoPhase unit 5 All indoor and outdoor field refrigerant piping must be insulated 1 2 minimum thickness All outdoor insulation must be UV and ozone resistant 6 Components are not supplied by Liebert but are required for proper circuit operation and maintenance DA250 with top piping has internally installed traps on the discharge lines 7 Traps must be installed a...

Страница 88: ... feet are provided with u 1 1 2 38mm adjustment from nominal height A 2 Dimensions are to center of feet 1 Front View Top View Right Side View 78 1 2 1994mm Typ 39 1 4 997mm Typ 2 Plcs 116 1 4 2953mm 33 7 8 860mm 46 1168mm 36 3 8 924mm 119 3 4 3042mm Overall Width 2 2 2 2 2 2 82 2083mm Overall Depth 36 3 8 924mm 46 1168mm 33 7 8 860mm 2 2 2 A 1 3 4 44mm Typ 1 3 4 44mm Typ 2 2 ...

Страница 89: ...d in this zone Gallery Side Electrical Panel Access Data Hall Electrical Panel Access 68 1727mm 42 1067mm Fan service zone Piping Cables must not be routed in this zone Gallery Side 88 2235mm Installation and replacement clearance for full unit Installation and coil replacement service clearance with disassembly INSTALLATION REPLACEMENT FROM DATA CENTER SIDE MAINTENANCE FROM GALLERY ...

Страница 90: ...mm Data Hall Fan service zone Piping Cables must not be routed in this zone Gallery Side Full Unit and Electrical Panel Access Data Hall Fan service zone Piping Cables must not be routed in this zone Gallery Side 68 1727mm Unit Disassembly access and Electrical Panel access INSTALLATION SERVICE AND MAINTENANCE FROM GALLERY ...

Страница 91: ...BERT DSE 88 2235mm Full Unit and Electrical Panel access Data Hall Fan service zone Piping Cables must not be routed in this zone Fan service zone Piping Cables must not be routed in this zone Data Hall 68 1727mm Unit Disassembly access and Electrical Panel access PERIMETER INSTALLATION AND SERVICE CLEARANCE ...

Страница 92: ...HARGE Form No DPN001040_REV4 CABINET DIMENSIONAL DATA LIEBERT DSE Front View Data Hall Side Top View For Unit Disassembly Data Refer to DPN004369 61 1550mm Fan Section Rear View Service on Gallery Side 44 3 8 1127mm 134 1 8 3406mm 83 1 2 2122mm 120 1 8 3051mm ...

Страница 93: ...e Top View 44 3 8 1127mm 134 1 8 3406mm Top View of Bottom of Frame 115 3 4 2940mm Bottom Discharge Opening 53 3 4 1366mm Bottom Discharge Opening Return Air From Data Center Supply Air To Data Center 1 3 4 44mm Duct Flange 60 1524mm Fan Section 115 3 8 2929mm Outside of Duct Flange 53 1 8 1348mm Outside of Duct Flange 3 1 2 90mm 2 3 8 60mm ...

Страница 94: ...a Hall Side A DETAIL A Gasketing shown is for pictorial purposes only to show edges of unit that require gap sealing Gasketing and method to be provided and applied by others in the field Data Hall Side 3 4 20mm Minimum Gap to be filled with gasketing between each unit 1 Notes 1 Gap is measured between frame memebrs of adjacent units ...

Страница 95: ...s terminals 75 76 for remote indication 1 AMP 24VAC max load Use Class 1 field supplied wiring 9 Heat rejection interlock On any call for compressor operation normally open dry contact is closed across terminals 70 71 230 to heat rejection equipment 1 AMP 24VAC max load Use Class 1 field supplied wiring CANbus ELECTRICAL CONNECTIONS 10 CANbus Connector Terminal block with terminals 49 1 CAN H and ...

Страница 96: ...tem that may be required by local or national codes 1 AMP 24VAC max load Use Class 1 field supplied wiring 17 Analog inputs Terminals 41 42 43 and 44 are user configurable for 0 10V 0 5V or 4 20MA OPTIONAL LOW VOLTAGE TERMINAL PACKAGE CONNECTIONS 18 Remote unit shutdown Two additional contact pairs available for unit shutdown labeled as 37B 38B 37C 38C Replace jumpers with field supplied normally ...

Страница 97: ...75 76 94 95 96 97 102 103 106 107 37C 38C 37B 38B 37 38 88 89 70 71 230 56 59 84 85 11 12 T6 T1 80 81 91 92 93 42 43 44 41 A 24 50 51 55 56 75 76 94 95 96 97 102 103 106 107 37C 38C 37B 38B 37 38 88 89 70 71 230 56 59 84 85 11 12 80 81 91 92 93 42 43 44 41 DETAIL A 2 1 5 1 2 7 8 19 12 9 21 20 13 14 6 18 SH 49 1 49 3 10 11 3 4 15 16 17 23 22 ...

Страница 98: ...Appendix C Guide Specifications The following are the guide specifications for the Liebert DSE 69 ...

Страница 99: ...Vertiv Liebert DSE System Design and User Guide 70 This page intentionally left blank ...

Страница 100: ...rmance SCOP shall meet ASHRAE 90 1 1 3 SUBMITTALS Submittals shall be provided with the agreement of the proposal and shall include Single Line Diagrams Dimensional Electrical and Capacity Data Piping and Electrical Connection Drawings 1 4 SERVICEABILITY ACCESS The cabinet shall be designed so that all components are easily accessible for service and maintenance through the unit s service non data...

Страница 101: ...match color of the main unit 2 2 FILTERS DA250 The filter chamber shall be located within the evaporator coil cabinet and filters shall be removable from the service side non data center side of the unit 2 2 1 Filters 4 in MERV 8 or MERV11 Filters shall be deep pleated 4 in 102 mm filters with an ASHRAE 52 2 2007 MERV8 or MERV11 rating Extra Filter Set ____ extra set s of filters shall be provided...

Страница 102: ...or and electronic expansion valves Compressors shall be located outside the air stream and shall be removable and serviceable from the service side of the unit Each compressor circuit shall be connected to the full face area of the evaporator coil 2 7 COMPRESSORS 2 7 1 Tandem Digital Scroll Compressors DA250 The compressors shall be tandem scroll type with a variable capacity operation capability ...

Страница 103: ... contractor 2 11 AIR COOLED SYSTEMS The indoor evaporator unit shall include refrigerant piping and shall have a factory holding charge of nitrogen The hot gas and liquid lines shall be spun shut and each shall include a factory installed Schrader valve Field relief of the Schrader valve shall indicate a leak free system from the factory Installing contractor shall cut the evaporator piping and sh...

Страница 104: ...ckup unit configuration settings to internal memory or USB storage drive Configuration settings may be transferred to another unit for a more streamlined unit startup Parameter Download The Liebert iCOM shall enable the user to download a report that lists parameter names factory default settings and user programmed settings in csv format for remote reference Parameter Search The Liebert iCOM shal...

Страница 105: ... analog inputs for field provided sensors The analog inputs shall accept a 4 to 20mA signal The user shall be able to change the input to 0 to 5VDC or 0 to 10VDC The gains for each analog input shall be programmable from the front display The analog inputs shall be able to be monitored from the front display Diagnostics Service Mode The Liebert iCOM shall be provided with self diagnostics to aid i...

Страница 106: ...of the following conditions High Temperature Low Temperature High Humidity Low Humidity Fan Fault Change Filters Loss of Air Flow Loss of Power Compressor Overload High Head Pressure Low Suction Pressure Custom Alarms Custom alarm inputs shall be provided to indicate facility specific events Custom alarms can be identified with programmable labels Frequently used alarm inputs shall include Leak Un...

Страница 107: ...ptions 3 3 1 Controlling Sensor Options The Liebert iCOM shall be flexible in the sense that it shall allow controlling the capacity and fan from multiple different sensor selections The sensor selections shall be Cooling Capacity Supply Remote Return Fan Speed Supply Remote Return Manual for diagnostics or to receive a signal from the BMS through Liebert remote monitoring devices or analog input ...

Страница 108: ...g capacity with heat load In the Optimized Aisle mode the fans operate in parallel Fans can be controlled exclusively by remote temperature or using static pressure with a secondary remote temperature sensor s as an override to ensure that the inlet rack temperature is being met Cooling Compressors Economizer or EconoPhase is controlled off unit supply air conditions The Liebert iCOM calculates th...

Страница 109: ...rt EconoPhase unit and shall communicate with them via field supplied CANbus wires This communication shall allow Liebert iCOM to control Liebert MCV condenser EconoPhase modes and operation and to monitor their health and alarm status 3 11 WIRED SUPPLY SENSOR Each Liebert iCOM shall have one factory supplied and connected supply air sensor that may be used as a controlling sensor or reference Whe...

Страница 110: ... high pressure is detected the control shall reduce the system discharge pressure by altering the compressor loading and the condenser fan speed preventing circuit shut down If the unit is unsuccessful in correcting the problem through this interaction an alarm shall occur and the affected compressor shall be immediately locked off The control shall automatically re enable the compressor when pres...

Страница 111: ...OTE The Auto setting attempts to maintain equal run times between compressors However the control will not turn Off a compressor to equalize run time when it is needed to control the space First priority If the safety timings are acceptable for only one compressor that compressor shall be the next to be started stopped Second priority If both compressors are Off the one with fewer working hours sh...

Страница 112: ...MANUAL COMPRESSOR DISABLEMENT The user shall have the ability to disable compressor operation using a set of either normally open or normally closed dry contacts tied directly to the control or through remote monitoring An additional enable disable feature shall be provided to allow the user to permanently disable an individual compressor circuit for maintenance using the local display 3 26 MANUAL...

Страница 113: ...down the unit upon high water condition 4 4 LOW VOLTAGE TERMINAL PACKAGE OPTIONAL Factory installed and factory wired terminals shall be provided Remote Shutdown Terminals 2 additional pairs of terminals provide the customer with additional locations to remotely shut down the unit by field installed devices or controls Extra Common Alarm Contacts 2 additional pairs of terminals provide the custome...

Страница 114: ... can have up to ten 2T sensors 20 sensor readings total for control or reference As part of the U2U network those sensors shall be shared and used to control the cooling units and provide greater flexibility visibility and control to respond to changes in the conditioned space When the sensors are used for control the user may set the control to be based off a maximum or average of a selected high...

Страница 115: ... by adjusting heat rejection capacity Microchannel coils shall provide superior heat transfer reduce air side pressure drop increase energy efficiency and significantly reduce the system refrigerant volume required EC fans and fan operating techniques shall provide reduced maximum sound levels 5 4 LIEBERT MCV CONDENSER COIL 5 4 1 Aluminum Microchannel Coil Microchannel coils shall be constructed o...

Страница 116: ... voltage interlock wires The control board shall use sensor and communication inputs to maintain refrigerant pressure by controlling each EC fan on the same refrigerant circuit to the same speed The control system provides refrigerant head pressure and system starting for outdoor ambient temperature as low as 30 F 35 C provided the total temperature design range from minimum to maximum is 125 F 70...

Страница 117: ...thin a bright aluminum NEMA 3R enclosure The Liebert EconoPhase is mounted wired and piped into the Liebert MCV Condenser Skid to provide significant jobsite installation savings The Liebert EconoPhase refrigerant pumps are individually activated and speed controlled during cooler outdoor ambient coordinated with Liebert DSE compressors idled and refrigerant bypassed around them Cool temperatures ...

Страница 118: ...e requirements for a computer room environmental control system The system shall be designed to maintain temperature and humidity conditions in the rooms containing electronic equipment The manufacturer shall design and furnish all equipment to be fully compatible with heat dissipation requirements 6 4 WARRANTY START UP AND CONTROL PROGRAMMING Install the indoor unit in accordance with manufacture...

Страница 119: ...Vertiv Liebert DSE System Design and User Guide ...

Страница 120: ...d logos referred to are trade names trademarks or registered trademarks of their respective owners While every precaution has been taken to ensure accuracyand completeness herein Vertiv Co assumes no responsibility and disclaims allliability for damages resulting from use of this information or for any errors or omissions Specifications are subject to change without notice SL 18945_REV2_9 18 590 1...

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