Mitsubishi Electric t-NEXT DF DX 011 P1 S Manual
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Mitsubishi Electric t-NEXT DF DX 011 P1 S Manual

Air conditioners for it cooling with dual fluid system.to be matched with remote air-cooled condenser.
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CLOSE CONTROL AIR CONDITIONERS
t-NEXT DF DX
10 – 149 kW
Air conditioners for IT Cooling with Dual Fluid system.
To be matched with remote air-cooled condenser.
The picture of the unit is indicative and may vary depending on the model
•
PERIMETER INSTALLATION
•
FULLY HERMETIC ON/OFF COMPRESSORS
•
DUAL FLUID SYSTEM WITH ADDITIONAL COIL
•
SINGLE OR DOUBLE REFRIGERANT CIRCUIT
•
AIR DELIVERY FROM THE BOTTOM (UNDER) OR FROM THE TOP (OVER)
•
PLUG FANS WITH EC ELECTRIC MOTOR
•
ELECTRONIC EXPANSION VALVE
•
AIR SUCTION TEMPERATURE UP TO 40°C
Data Book: T_tNEXTDFDX_0719_EN
rcitcooling.com

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Summary of Contents for Mitsubishi Electric t-NEXT DF DX 011 P1 S

  • Page 1 CLOSE CONTROL AIR CONDITIONERS t-NEXT DF DX 10 – 149 kW Air conditioners for IT Cooling with Dual Fluid system. To be matched with remote air-cooled condenser. The picture of the unit is indicative and may vary depending on the model •...

  • Page 2: Table Of Contents

    t-NEXT DF DX INDEX MEHITS CERTIFICATIONS ........................................... 4 GENERAL CHARACTERISTICS ........................................5 INSTALLATION .............................................. 6 PRODUCT FEATURES AND BENEFITS ...................................... 6 F-GAS DIRECTIVE ............................................6 MODEL IDENTIFICATION ..........................................7 TRANSPORT AND STORAGE TEMPERATURE ..................................7 WORKING LIMITS ............................................8 MAIN COMPONENTS ............................................ 9 REMOTE AIR-COOLED CONDENSERS ....................................
  • Page 3 t-NEXT DF DX OPTIONAL ACCESSORIES: P071 - REMOTE T/RH PROBE ..............................46 OPTIONAL ACCESSORIES: 4666 – EXTERNAL AIR PROBE ..............................46 OPTIONAL ACCESSORIES: P111 – DUAL POWER SUPPLY ..............................47 OPTIONAL ACCESSORIES: P112 – DUAL POWER SUPPLY + OPTIONAL ..........................47 OPTIONAL ACCESSORIES: P113 –...

  • Page 4: Mehits Certifications

    t-NEXT DF DX MEHITS CERTIFICATIONS SYSTEM CERTIFICATIONS ISO 9001 CERTIFICATION – MEHITS S.p.A. Quality Management System ISO 14001 CERTIFICATION – MEHITS S.p.A. Environmental Management System BS OHSAS 18001 CERTIFICATION – MEHITS S.p.A. Occupational Health and Safety Management System PRODUCT CERTIFICATIONS BY COUNTRY CE MARKING MEHITS units are in compliance with the European Directives in force.

  • Page 5: General Characteristics

    t-NEXT DF DX GENERAL CHARACTERISTICS Air Conditioners for IT Cooling with Dual Fluid system. • Direct expansion, air cooled. For matching with remote air-cooled condenser; • Two independent cooling systems: Direct expansion coil; Chilled water coil; • Plug fans with EC electric motors; •...

  • Page 6: Installation

    t-NEXT DF DX INSTALLATION The series is particularly suitable for installation in Data Centre of medium / small size with constant load. DOWNFLOW VERSION (Under) Typical installation is on the perimeter. The units are placed along the perimeter of the Data Center. Air suction from the top of the unit and air delivery in the underfloor void.

  • Page 7: Model Identification

    t-NEXT DF DX MODEL IDENTIFICATION Air conditioners for IT Cooling model: t-NEXT DF DX O 041 P1 S t-NEXT Series DF DX Unit type DF – with dual fluid system Two independent cooling systems: Direct expansion coil, chilled water coil, DX –...

  • Page 8: Working Limits

    t-NEXT DF DX WORKING LIMITS Relative humidity - % Dry bulb temperature - °C ROOM AIR CONDITIONS Room air temperature: 14°C minimum temperature with wet bulb. 24°C maximum temperature with wet bulb. 18°C minimum temperature with dry bulb 40°C maximum temperature with dry bulb. AREA “A”.

  • Page 9: Main Components

    t-NEXT DF DX MAIN COMPONENTS FRAMEWORK • Base in aluminium extrusion, painted with epoxy powders. Colour RAL 9005; • Frame in aluminium profile, painted with epoxy powders. The inner frame is provided with seals for the panels. Colour RAL 9005; •...
  • Page 10 t-NEXT DF DX COOLING SECTION – DIRECT EXPANSION COIL • Heat exchanger coil with internally corrugated copper tubes and high efficiency aluminium fins, specifically developed to provide high heat transfer and lower pressure drops. • Frame in galvanized steel or peraluman. •...

  • Page 11: Remote Air-Cooled Condensers

    t-NEXT DF DX REMOTE AIR-COOLED CONDENSERS The descriptions of these series can be found in Chapter REMOTE AIR-COOLED CONDENSERS..........Remote air-cooled condenser: Remote air-cooled condenser in PERALUMAN aluminium alloy with microchannel condensing coil: P821 - with AC axial fans and standard acoustic version series GR-Z A B 50;...
  • Page 12 t-NEXT DF DX P181 ........Network analyser (standard machine) Multifunction utility for calculating and displaying the machine electrical measurements. P182 ........Network analyser+optional (full optional machine) Multifunction utility for calculating and displaying the machine electrical measurements. P183 ........Kit network analyser (standard machine) Multifunction utility for calculating and displaying the machine electrical measurements.
  • Page 13 t-NEXT DF DX 2411 ........Phase sequence relay. Phases sequence control relay for the machine. The system checks that the phase sequence of the power supply is correct to prevent the opposite rotation of the three phase electric motors of the machine as compressors.

  • Page 14: Technical Data

    t-NEXT DF DX TECHNICAL DATA VERSION (1) U / O U / O U / O U / O U / O MODEL 011 P1 S 014 P1 S 016 P1 S 020 P1 S 022 P1 S SIZE COOLING CAPACITY (2) Total 10,3 13,8...
  • Page 15 t-NEXT DF DX TECHNICAL DATA VERSION (1) U / O U / O U / O U / O U / O MODEL 026 P1 S 032 P1 S 037 P1 S 041 P1 S 045 P1 S SIZE COOLING CAPACITY (2) Total 26,2 32,5...
  • Page 16 t-NEXT DF DX TECHNICAL DATA VERSION (1) U / O U / O U / O U / O U / O MODEL 039 P2 D 048 P2 D 055 P2 D 062 P2 D 075 P2 D SIZE COOLING CAPACITY (2) Total 38,1 48,6...
  • Page 17 t-NEXT DF DX TECHNICAL DATA VERSION (1) U / O U / O U / O MODEL 082 P2 D 092 P2 D 102 P2 D 117 P4 D 146 P4 D SIZE COOLING CAPACITY (2) Total 82,5 Sensible 79,5 88,1 94,9 SHR (3)

  • Page 18: Dual Fluid System

    t-NEXT DF DX DUAL FLUID SYSTEM DUAL FLUID system on the machine allows to obtain two independent cooling systems: • Chilled water coil • Direct expansion coil Air conditioner Liquid chiller Remote condenser The microprocessor control system automatically manages the system, by activating the cooling circuit more convenient according to the parameters set.

  • Page 19: 2-Way Ball Valve For Chilled Water Flow Control

    t-NEXT DF DX TECHNICAL DATA VERSION (1) U / O U / O U / O U / O U / O MODEL 039 P2 D 048 P2 D 055 P2 D 062 P2 D 075 P2 D SIZE COOLING CAPACITY (2) Total 48,8 55,5...

  • Page 20: Water Quality Of The Hydraulic Circuits

    t-NEXT DF DX WATER QUALITY OF THE HYDRAULIC CIRCUITS The values shown in the table must be guaranteed during the entire life cycle of the machine. Description Symbol Range Hydrogen Ions 7.5 ÷ 9 Presence of calcium (Ca) and magnesium (Mg) Hardness 4 ÷...

  • Page 21: Refrigerant Charge

    t-NEXT DF DX REFRIGERANT CHARGE The air conditioner is supplied with a minimum R410A refrigerant charge. Refrigerant must be charged. The following table shows the refrigerant charge that must be introduced for the air conditioner only. Remote condenser, connections pipes and optional are excluded. VERSION (1) U / O U / O...

  • Page 22: Pressure Relief Valve

    t-NEXT DF DX PRESSURE RELIEF VALVE The pressure relief valve of the refrigerant circuit is installed in the machines when required by Directive 2014/68/EU. The valve is installed on liquid receiver of each refrigerant circuit of the machine with the purpose to protect the circuit from overpressure. It is up to the installer to check whether the system complies with the 2014/68 / EU standard regarding the installation of the pressure relief valve.

  • Page 23: Refrigerant Circuit

    t-NEXT DF DX REFRIGERANT CIRCUIT Below refrigerant diagrams for version with single or double refrigerant circuit. The diagrams refer to the standard configuration, without optional. UNDER - SINGLE REFRIGERANT CIRCUIT CND1 VS = Pressure relief valve Only models 041 P1, 045 P1 SPH1 BPH1 BPL1...
  • Page 24 t-NEXT DF DX UNDER - DOUBLE REFRIGERANT CIRCUIT CND2 VS = Pressure relief valve SIZE E9 Only models 075 P2, 082 P2, CND1 092 P2, 102 P2, 117 P4, 146 P4 SPH2 BPH2 SPH1 BPH1 BPL2 BPL1 OVER - DOUBLE REFRIGERANT CIRCUIT CND2 VS = Pressure relief valve CND1...

  • Page 25: Recommended Refrigerant Lines

    t-NEXT DF DX RECOMMENDED REFRIGERANT LINES Values are referred to “EQUIVALENT LENGTH” of the piping. You are kindly requested to always refer to the “INSTALLATION DIAGRAM” for the allowable height difference and to properly select all necessary components. Verify the need to use pressure limiting devices (pressure relief valves) where not already provided for by Directive 2014/68 / EU. In some cases, the diameter of the refrigerant lines may not correspond with the diameter of the cooling taps.

  • Page 26: Installation Diagram

    t-NEXT DF DX INSTALLATION DIAGRAM CARRY OUT PIPING WITH SLOPES INDICATED TO FAVOR THE RETURN OF THE LUBRICANT OIL TO THE COMPRESSOR APPLY THE DIAGRAM TO ANY REFRIGERANT CIRCUIT OF THE MACHINE. Difference in height between the machine and the remote condenser: Value expressed in equivalent length LEGENDA Air conditioner...

  • Page 27: Acoustic Data

    t-NEXT DF DX ACOUSTIC DATA Acoustic data of the standard machine at full load working conditions. WARNING: In a closed room the noise produced by a sound source reaches the listener in two different ways: • Directly • Reflected from the surrounding walls, floor, ceiling, from furniture. With the same sound source, the noise produced in a closed room is greater than that produced outdoors.

  • Page 28: Electrical Data

    t-NEXT DF DX ELECTRICAL DATA Electrical data of the system at full load working conditions. VERSION (1) U / O U / O U / O U / O U / O MODEL 011 P1 S 014 P1 S 016 P1 S 020 P1 S 022 P1 S SIZE...

  • Page 29: Microprocessor Control System

    t-NEXT DF DX MICROPROCESSOR CONTROL SYSTEM The unit is equipped with the controller connected to a 6 keys keyboard with graphic display on which all information in English language or easily identifiable symbols are displayed. The controller disposes of a “flash” memory that preserves the information even in absence of power supply.
  • Page 30 t-NEXT DF DX UNIT 2 UNIT 3 UNIT 10 LAN address=12 LAN address=13 LAN address=20 REMOTE TERMINAL LAN address=32 LAN address=2 LAN address=3 LAN address=10 UNIT 1 Display & Keyboard LAN address=11 FieldBus2 Controller - LAN address=1 MODBUS BACnet BACnet OVER IP MS/TP RS485 BMS 1...

  • Page 31: Demand Limit

    t-NEXT DF DX DEMAND LIMIT Demand Limit function is part of the control software for machines with double refrigerant circuit. It allows to limit the absorbed current of the machine. The function must be activated and configurated. A digital inlet on electrical panel connecting terminals allows the remote enabling of the function with an external signal without tension.

  • Page 32: Possible Air Intake For Over Versions

    t-NEXT DF DX POSSIBLE AIR INTAKE FOR OVER VERSIONS OVER VERSION - AIR INTAKE FROM THE BOTTOM Thanks to the particular basement design, it is possible to have the unit air intake from the bottom side. With this solution, it is necessary to foresee the optional blind frontal panels OVER VERSION - AIR INTAKE FROM THE BACK SIDE (Sizes E4, E5, E6, E7, E8, E9 excluded) It is possible to have the unit air intake from the back side.

  • Page 33: Remote Air-Cooled Condenser

    t-NEXT DF DX REMOTE AIR-COOLED CONDENSER Remote air-cooled condensers for matching to air conditioners for IT Cooling. The constructive solutions allow high application flexibility. Horizontal air flow, from coil to fan. The series has an independent power supply from the indoor unit. Among the indoor unit and the condenser is necessary the refrigerant connection and electrical connection of the condensing proportional control signal and the alarms.
  • Page 34 t-NEXT DF DX T-MATE DX SERIES T-MATE DX: Remote air-cooled condensers equipped with axial fans and condensing coil with copper tubes and aluminium fins. The machines are suitable for outdoor installation. A Version: Equipped with AC axial fans. T-MATE DX-A E Version: Equipped with EC axial fans.

  • Page 35: Optional Accessories: P121 - Front Air Intake+Bottom Panel

    t-NEXT DF DX OPTIONAL ACCESSORIES: P121 – FRONT AIR INTAKE+BOTTOM PANEL Available for OVER units. The optional is not compatible with “P122 Bottom air intake+blind panels” for OVER units. With this accessory, it is possible a noise insulation of the machine base, when the machine is installed directly on floor as raised floor, wood floor etc.

  • Page 36: Optional Accessories: P171 - Kit For Air -45°C Mch Axial Ac

    t-NEXT DF DX OPTIONAL ACCESSORIES: P171 – KIT FOR AIR -45°C MCH AXIAL AC OPTIONAL ACCESSORIES: P172 – KIT FOR AIR -45°C AXIAL AC P171 – LOW TEMPERATURE KIT MCH AXIAL AC (GR-Z A B 50) P172 – LOW TEMPERATURE KIT AXIAL AC (T-MATE DX-A STD) The optional is available only for air conditioners matched with remote air-cooled condensers with axial fans with AC electric motors: •...

  • Page 37: Optional Accessories: A492 - Water Leackage Detector + Additional Detector

    t-NEXT DF DX OPTIONAL ACCESSORIES: A492 – WATER LEACKAGE DETECTOR + ADDITIONAL DETECTOR The system includes an electronic relay installed in the electrical panel of the indoor machine and 2 water detectors to be connected in series. The electrical connections for the probe and the alarm contact are present in the indoor machine's terminal board.

  • Page 38: Accessori: P181 - Analizzatore Di Rete

    t-NEXT DF DX ACCESSORI: P181 – ANALIZZATORE DI RETE ACCESSORI: P182 – ANALIZZATORE DI RETE+OPTIONAL ACCESSORI: P183 – KIT ANALIZZATORE DI RETE ACCESSORI: P184 – KIT ANALIZZATORE DI RETE+ OPTIONAL This device provides continuous measurement of power consumption, monitoring current, voltage and power.

  • Page 39: Optional Accessories: P021 - 2-Way Ball By-Pass Valve

    t-NEXT DF DX OPTIONAL ACCESSORIES: P021 – 2-WAY BALL BY-PASS VALVE The optional is available for main chilled water circuit only. 2-way motorized valve with 0÷10 VDC control actuator and emergency manual control for the third way (by-pass) of the hydraulic circuit. The valve is in combination with the main 2-way water flow control valve.
  • Page 40 t-NEXT DF DX TECHNICAL DATA VERSION (1) U / O U / O U / O U / O U / O U / O U / O MODEL 011 P1 S 014 P1 S 016 P1 S 020 P1 S 022 P1 S 026 P1 S 032 P1 S...

  • Page 41: Optional Accessories: A431 - Electric Heaters

    t-NEXT DF DX OPTIONAL ACCESSORIES: A431 – ELECTRIC HEATERS OPTIONAL ACCESSORIES: A432 – EXTRA POWER ELECTRIC HEATERS A431 –ELECTRIC HEATERS Electric heater consisting of finned aluminum elements, ensuring low surface temperature and deleting the air ionization problems. The optional is installed downstream the main cooling coil. In electric heaters with three working steps the activation is binary type.
  • Page 42 t-NEXT DF DX A432 – EXTRA POWER ELECTRIC HEATERS The optional is not available for sizes E1, E2. The components are the same of the standard accessory TECHNICAL DATA VERSION (1) U / O U / O U / O U / O U / O U / O...

  • Page 43: Optional Accessories: 4301 - Steam Humidifier 3Kg/H

    t-NEXT DF DX OPTIONAL ACCESSORIES: 4301 – STEAM HUMIDIFIER 3KG/H OPTIONAL ACCESSORIES: 4303 – STEAM HUMIDIFIER 8KG/H OPTIONAL ACCESSORIES: 4305 – STEAM HUMIDIFIER 15KG/H Modulating steam humidifier with immersed electrodes fitted with safety and running accessories The optional includes the control board. The optional requires mandatory accessory “P161 T/rH air intake sensor“.
  • Page 44 t-NEXT DF DX TECHNICAL DATA VERSION (1) U / O U / O U / O U / O U / O U / O MODEL 032 P1 S 037 P1 S 041 P1 S 045 P1 S 039 P2 D 048 P2 D SIZE STEAM PRODUCTION...
  • Page 45 t-NEXT DF DX EXTRA POWER HUMIDIFIERS The optional is not available for size E1, E2, E3. The components are the same of the standard accessory TECHNICAL DATA VERSION (1) U / O U / O U / O U / O U / O U / O MODEL...

  • Page 46: Optional Accessories : P051 - Dehumidification Function

    t-NEXT DF DX TECHNICAL DATA VERSION (1) MODEL 117 P4 D 146 P4 D SIZE STEAM PRODUCTION kg/h Power input 11,3 11,3 Absorbed current (OA) 16,2 16,2 Max absorbed current (FLA) Water content 10,3 10,3 Max water supply pressure 1÷8 1÷8 NET WEIGHT (2) HYDRAULIC CONNECTION...

  • Page 47: Optional Accessories: P111 - Dual Power Supply

    t-NEXT DF DX OPTIONAL ACCESSORIES: P111 – DUAL POWER SUPPLY OPTIONAL ACCESSORIES: P112 – DUAL POWER SUPPLY + OPTIONAL OPTIONAL ACCESSORIES: P113 – KIT DUAL POWER SUPPLY OPTIONAL ACCESSORIES: P114 – KIT DUAL POWER SUPPLY + OPTIONAL The motorised changeover switches automatically manage changeover under load between two three- phase power supplies, or manually for emergency operations.

  • Page 48: Optional Accessories: A381 - Drain Pump

    t-NEXT DF DX OPTIONAL ACCESSORIES: A381 - DRAIN PUMP A plastic case contains the vertical type pump, the water tank with float plus safety switch and hydraulic and electric connection. Together the pump 10 linear meters anti-crushing plastic discharge spiral tube is supplied The optional must be installed as shown in the documentation delivered together with the unit.

  • Page 49: Optional Accessories: P084 - Air Filter Epm 10 50

    t-NEXT DF DX OPTIONAL ACCESSORIES: P084 – AIR FILTER ePM The ePM 50% air filters (according to ISO EN 16890), replace the standard one. The filters generate a pressure drops higher than the standard ones. The filters are made of glass micro-fibre and are not regenerable. VERSION (1) U / O U / O...

  • Page 50: Optional Accessories: A531 - On-Off Damper

    t-NEXT DF DX OPTIONAL ACCESSORIES: A531 – ON-OFF DAMPER Non-return air damper with frame driven by electric servomotor. Accessory installed on units air delivery and it can be matched to plenums and support frame. The accessory requires mandatory accessory “9973 Wooden cage packing”. FRAMEWORK •...
  • Page 51 t-NEXT DF DX INSTALLATION EXAMPLE A531: OVER Damper Damper A531: UNDER Damper Damper WORKING LOGIC The damper opens at supply fans activation to allow air flow. When the fans stop for failure or stop command, the damper closes, preventing air flow into the unit. MEHITS S.p.A.

  • Page 52: Optional Accessories: P011 - Empty Plenum

    t-NEXT DF DX OPTIONAL ACCESSORIES: P011 - EMPTY PLENUM OPTIONAL ACCESSORIES: P012 - EMPTY PLENUM CL.A1 OPTIONAL ACCESSORIES: P031 - EMPTY INTAKE PLENUM OPTIONAL ACCESSORIES: P032 - EMPTY INTAKE PLENUM CL.A1 OPTIONAL ACCESSORIES: P013 - PLENUM + 3 GRILLES OPTIONAL ACCESSORIES: P014 - PLENUM + 3 GRILLES CL.A1 OPTIONAL ACCESSORIES: P015 - SILENCED PLENUM OPTIONAL ACCESSORIES: P016 - SILENCED PLENUM + 1 GRILLE OPTIONAL ACCESSORIES: P017 - PLENUM + FILTER EPM2.5 50%...
  • Page 53 t-NEXT DF DX P011 / P012 – P031 / P032: EMPTY PLENUM The plenum is void and can be used to rise the intake/delivery air inlet/outlet. Remove the frontal panels for inspection. Also available with fire reaction in class “0” or “A1” (EN 13501-1). The optional accessories “P031 Empty intake plenum, for OVER version”...
  • Page 54 t-NEXT DF DX P015: SILENCED PLENUM The plenum must be installed on air delivery. The plenum is fitted with noise absorption partitions to reduce the noise emission. Remove the frontal panels for inspection. P015 UNDER P015 OVER VERSION (1) U / O U / O U / O U / O...
  • Page 55 t-NEXT DF DX ACOUSTIC DATA VERSION (1) U / O U / O U / O U / O U / O U / O MODEL 055 P2 D 062 P2 D 075 P2 D 082 P2 D 092 P2 D 102 P2 D SIZE SOUND LEVEL ISO 3744 (2)
  • Page 56 t-NEXT DF DX ACOUSTIC DATA VERSION (1) U / O U / O U / O U / O U / O U / O MODEL 011 P1 S 014 P1 S 016 P1 S 020 P1 S 022 P1 S 026 P1 S SIZE SOUND LEVEL ISO 3744 (2)
  • Page 57 t-NEXT DF DX P017 / P018 / P019: SUPPLY PLENUM + FILTER The plenum must be installed on air delivery. The optional is not compatible with “P084 Air filter ePM10 50%”. The plenum is fitted with high efficiency rigid bag filters. Filters are made of glass micro fibre and are not regenerable.
  • Page 58 t-NEXT DF DX VERSION (1) U / O U / O U / O U / O U / O U / O MODEL 055 P2 D 062 P2 D 075 P2 D 082 P2 D 092 P2 D 102 P2 D SIZE PRESSURE DROPS (2) Filters ePM...

  • Page 59: Optional Accessories: P034 - Intake Free-Cooling Plenum

    t-NEXT DF DX OPTIONAL ACCESSORIES: P034 – INTAKE FREE-COOLING PLENUM The optional is supplied separately and the installation on the unit is at Customer care. The optional requires mandatory accessories “P161 T/rH air intake sensor“, “4666 External air probe”, “A812 Free-cooling direct control” and “P122 Bottom air intake+blind panels, for OVER version only”. The plenums have same technical characteristics and base dimensions of the machine cabinet.
  • Page 60 t-NEXT DF DX OVER VERSION SIZE E1 / E2 / E3 SIZE E4 / E5 SIZE E6 / E7 / E8 VERSION (1) SIZE 1085 1305 1630 1873 2175 2499 1025 1035 1335 1664 1965 2220 147,5 Weight (2) U = Under, downflow / O = Over, upflow Add this value to the total unit weight MEHITS S.p.A.
  • Page 61 t-NEXT DF DX UNDER VERSION SIZE E1 / E2 / E3 SIZE E4 / E5 SIZE E6 / E7 / E8 / E9 VERSION (1) SIZE 1085 1305 1630 1873 2175 2499 2899 1025 1035 1335 1664 1965 2220 2670 147,5 Weight (2) U = Under, downflow / O = Over, upflow...
  • Page 62 t-NEXT DF DX WARNING IT IS COMPULSORY TO INSTALL INTO THE ROOM AN APPROPRIATELY SIZED OVERPRESSURE DAMPER TO ALLOW THE ROOM AIR EXHAUSTION DURING FREE-COOLING WORKING MODE OVERPRESSURE DAMPER – Not supplied During free-cooling operation, the air conditioner supplies ambient air directly into the room, this causes an increase in air pressure inside the room.

  • Page 63: Optional Accessories: P041 - Support Frame H 255-350Mm

    t-NEXT DF DX OPTIONAL ACCESSORIES: P041 – SUPPORT FRAME H 255-350MM OPTIONAL ACCESSORIES: P042 – SUPPORT FRAME H 355-450MM OPTIONAL ACCESSORIES: P043 – SUPPORT FRAME H 400-510MM The accessory is supplied as an assembly kit. It is not possible to match the unit floor stand with plenum installed under the machine. The floor stand is available in 3 different heights.

  • Page 64: Optional Accessories: 1511 - Soft Starter

    t-NEXT DF DX OPTIONAL ACCESSORIES: 1511 – SOFT STARTER The optional is not available for size E1, E2. Compressor motors soft-starter system. The system is contained in the electrical box. Its function is to reduce the starting current of the motor with a monitored start. The reduction of the starting current produced by soft starter optional accessory reduces the stress on the power line and on the compressors contributing to increase the components lifetime.

  • Page 65: Optional Accessories: A272 - Cl.0 Or A1 (En13501-1) Insulation

    t-NEXT DF DX OPTIONAL ACCESSORIES: A272 – CL.0 or A1 (EN13501-1) INSULATION The optional is designed TO SUPPLY THE PANELING ONLY WITH FIRE REACTION IN CLASS “0” OR “A1 (EN 13501-1)”; furthermore, allows a noise insulation of the panels of the air conditioners. The pressure level reduction of the unit is about 2 dB(A).

  • Page 66: Machine Drawings

    t-NEXT DF DX MACHINE DRAWINGS Dimensions in mm - UNDER E1 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 67 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - UNDER E2 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 68 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - UNDER E3 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 69 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - UNDER E4 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 70 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - UNDER E5 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 71 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - UNDER E6 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 72 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - UNDER E7 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 73 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - UNDER E8 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 74 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - UNDER E9 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 75 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - OVER E1 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 76 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - OVER E2 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 77 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - OVER E3 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 78 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - OVER E4 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 79 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - OVER E5 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 80 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - OVER E6 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 81 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - OVER E7 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 82 t-NEXT DF DX MACHINE DRAWINGS - Dimensions in mm - OVER E8 MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...

  • Page 83: Hole In The Raised Floor For Downflow Version

    t-NEXT DF DX HOLE IN THE RAISED FLOOR FOR DOWNFLOW VERSION HOLE IN THE RAISED FLOOR WITHOUT FLOOR STAND Foresee a hole in the floor with the following dimensions: SIZE 1185 1510 1755 2055 2380 2780 HOLE IN THE RAISED FLOOR WITH FLOOR STAND (OPTION) Foresee a hole in the floor with the following dimensions: SIZE 1105...

  • Page 84: Example For Machines Noise Emission Calculation

    t-NEXT DF DX EXAMPLE FOR MACHINES NOISE EMISSION CALCULATION UNDER MACHINE WITH DUCT ON AIR INTAKE Duct Lp A = Front side Under catalogue value Lp B = Air delivery Under catalogue value Lp C = Air intake Under catalogue value The points B and C do not influence the point A UNDER MACHINE UNDER WITH PLENUM ON AIR DELIVERY Lp A = Front side Under catalogue value...
  • Page 85 t-NEXT DF DX EXAMPLE FOR MACHINES NOISE EMISSION CALCULATION OVER MACHINE WITH PLENUM ON AIR DELIVERY Lp A = Air intake Over catalogue value Lp B = Air delivery Over catalogue value – plenum noise reduction Lp A+B = 10 log OVER MACHINE WITH DUCT AND PLENUM ON AIR DELIVERY Blind front panel Lp A = Front side Over catalogue value...

  • Page 86: Valve Pressure Drop Calculation As Function Of Water Flow Rate

    t-NEXT DF DX VALVE PRESSURE DROP CALCULATION AS FUNCTION OF WATER FLOW RATE Flow coefficient k v defines the water flow (between 5°C and 40°C) expressed in m /h that cross a valve with a pressure drop of 1bar (100kPa). With this data is possible to calculate the localized pressure drop as function of the water flow rate.

  • Page 87: Air Filters Replacement

    t-NEXT DF DX AIR FILTERS REPLACEMENT FOR UNDER VERSION MACHINES SIZE E4 – E5 – E6 – E7 – E8 – E9 Installation with an obstacle Installation with an air intake Installation with a Free- on the top plenum with noise partitions Cooling plenum Installation with an air intake duct...

  • Page 88: Shipment: Packing Dimensions

    t-NEXT DF DX SHIPMENT: PACKING DIMENSIONS Values referred to basic machine. The presence of some accessories increases the weight of machine. The machines are shipped on pallet and covered with shrink wrap. On request packing on pallet covered with shrink wrap and wooden cage. OPTIONAL 9973: WOODEN CAGE PACKING STANDARD PACKING DIMENSIONS...

  • Page 89: Shipment: Optionals Packing Dimensions And Shipping Weight

    t-NEXT DF DX OPTIONAL 9973: WOODEN CAGE PACKING 011 P1 014 P1 016 P1 020 P1 022 P1 026 P1 032 P1 037 P1 041 P1 045 P1 Model Size Weight UNDER 336,2 341,2 537,5 542,5 554,5 562,5 Weight UNDER (1) kg 361,2 366,2 581,5...
  • Page 90 t-NEXT DF DX P034: INTAKE FREE-COOLING PLENUM The plenums are shipped on pallet and covered with shrink wrap. Size DIMENSIONS 1200 1400 1750 2000 2280 2650 3000 1050 1050 1050 1050 1050 1050 SHIPPING WEIGHT P034 - Intake free-cooling plenum “U” P034 - Intake free-cooling plenum “O”...
  • Page 91 t-NEXT DF DX MEHITS S.p.A. T_tNEXTDFDX_0719_EN DATA BOOK...
  • Page 92 The Company reserves the right to make any variation in technical specification to the equipment described, or to withdraw or replace products without prior notification or public announcement. Mitsubishi Electric Hydronics & IT Cooling Systems S.p.A. is constantly developing and improving its products. All descriptions, illustrations, drawings and specifications present in this publication are general information and shall not part of any contract.

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