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Condensing Unit
(Inverter scroll compressor installed)
ECOV-X15VA(-BS)
INSTALLATION MANUAL
For safe and correct use, please read this installation manual thoroughly before installing the condensing unit.
http://www.mitsubishielectric.com/ldg/ibim/
Go to the above website to download manuals, select model name, then choose language.
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<ORIGINAL>
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Table of Contents
Related Manuals for Mitsubishi Electric ECOV-X15VA
Summary of Contents for Mitsubishi Electric ECOV-X15VA
- Page 1 <ORIGINAL> Condensing Unit (Inverter scroll compressor installed) ECOV-X15VA(-BS) INSTALLATION MANUAL For safe and correct use, please read this installation manual thoroughly before installing the condensing unit. http://www.mitsubishielectric.com/ldg/ibim/ Go to the above website to download manuals, select model name, then choose language.
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Page 2: Table Of Contents
Usage conditions ......................15 2-2. Usage conditions/environment ..................15 Unit components and parts list ................16 3-1. Unit components ......................16 3-1-1. ECOV-X15VA....................16 3-2. Package contents ......................16 3-3. Transporting and unpacking the unit ................17 Precautions for installation ..................18 4-1. - Page 3 Contents Pages Refrigerant piping work ...................25 7-1. General information ......................25 7-1-1. Removing the bypass pipe................25 7-1-2. Notes on water and contaminants..............25 7-1-3. Pipe size ......................26 7-1-4. Height difference between devices ..............26 7-1-5. Supporting the pipes ..................26 7-1-6.
- Page 4 Contents Pages Air tightness test/Vacuum drying ................39 9-1. Air tightness test ......................39 9-1-1. Purpose of air tightness test................39 9-1-2. Air tightness test pressure................39 9-1-3. Air tightness test procedure ................39 9-1-4. Refrigerant leakage detection ................. 40 9-2. Vacuum drying ........................
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Page 5: Safety Precautions
MITSUBISHI ELECTRIC accessories other than the ones recommended CORPORATION cannot be held responsible for by Mitsubishi Electric may result in smoke, fire, malfunctions or accidents resulting from the use burst pipes or units, or an explosion. of the wrong type of refrigerant. - Page 6 To reduce the risk of short circuit, current leak- When tightening or loosening the check joint, age, electric shock, malfunctions, smoke, or fire, use two spanners. The use of a single spanner do not splash water on electric parts. may cause the pipe to twist and become dam- aged, resulting in refrigerant leakage, oil spatter, To reduce the risk of electric shock, malfunc- or oxygen deprivation.
- Page 7 Plastic bags pose suffo- dealer or qualified personnel. Only use the parts cation hazard to children. specified by Mitsubishi Electric. Installation by unauthorized personnel or use of unauthorized Install a pressure relief device in accordance parts or accessories may result in water leakage, with applicable local regulations.
- Page 8 CAUTION To reduce the risk of rain water or drain water from entering the room and damaging the interi- or, drainage work must be performed by your dealer or qualified personnel according to the in- structions detailed in the Installation Manual. [4] Piping Work Piping Work WARNING...
- Page 9 To reduce the risk of injury or electric shock, To reduce the risk of current leakage, overheat- turn off the main power before performing elec- ing, smoke, or fire, use properly rated wires with trical work. adequate current carrying capacity. All electric work must be performed by a quali- Do not let bare wires protrude from the terminal fied electrician according to the local regula-...
- Page 10 When removing R744 from the system, wrap the tip of the hose with a cloth, and remove R744 gradually. Refrigerant in the dry ice state may spew out along with a large amount of oil. When removing R744 from the system, keep R744 away from plants and the building struc- tures.
- Page 11 Have a set of tools for exclusive use with R744. Consult your nearest Mitsubishi Electric Dealer. Do not repeatedly turn on and off the main power supply switch in less than 10 minutes. Doing so Keep dust, dirt, and water off the charging hose.
- Page 12 The design pressure must not be exceeded. (Equipment pressure: High pressure 12 MPa; Low pressure 8.5 MPa) This unit <ECOV-X15VA> is a condensing unit, complying with condensing unit requirements of IEC60335-2-40, must only be connected to other units that have been confirmed as complying to corresponding evaporator requirements of this international standard.
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Page 13: Installation Process And Safety Precautions For Use With R744
Installation process and safety precautions for use with R744 <Steps for installation> <Safety precautions for use with R744> <Page> Determination of installation area Check of condensing unit • Check that the unit is intended for use with R744. • Check the equipment pressure. specifications (High pressure 12.0 MPa, Low pressure 8.5 MPa) •... -
Page 14: Precautions For The Handling Of R744
1. Precautions for the handling of R744 1-1. Characteristics of R744 R744 is a natural refrigerant with the ozone depletion coefficient of zero and the global warming coefficient of 1. The pressure of R744 at the normal temperature (25°C(77°F)) is as high as 6.4 MPa, which is approximately five times that of R404A (1.24 MPa), requiring more stringent safety precautions. -
Page 15: Usage Conditions/Environment
2. Usage conditions/environment 2-1. Usage conditions Usage Low/Medium temperature Refrigerant type R744 Evaporation temperature °C (°F) -45 to -5 (-49 to 23) Suction pressure 0.73 to 2.94 Heat level of suction gas 10 to 40 Suction gas temperature °C (°F) 18 (64) or below Discharge pressure 1.60 to 11.0... -
Page 16: Unit Components And Parts List
3. Unit components and parts list 3-1. Unit components 3-1-1. ECOV-X15VA (Unit: in. [mm]) Air intake Discharge air Pressure display window Control box <Low pressure> Service panel Switch Compressor Liquid pipe <1/4[6.35]Brazed> Reducer < accessory > Trace rope access point... -
Page 17: Transporting And Unpacking The Unit
40 to 60 degrees Protection pad Protection pad Center of gravity Center of gravity Protection pad Protection pad Model ECOV-X15VA Weight (kg) (lbs) 115 (253) X (mm) (in.) 710 (28) Y (mm) (in.) 528 (21) Z (mm) (in.) 201 (8) WT10434X01_en... -
Page 18: Precautions For Installation
The design pressure on the liquid-line side is 12 MPa, and that on the suction-line side is 8 MPa. (Refer to "4-2-1.Refrigerant pipes".) Only use the refrigerant that is specified by Mitsubishi Electric. [2] Entire compressor is hot. The entire compressor is hot during operation and immediately after stoppage. Wait for the pressure and temperature inside the compressor to drop, especially before conducting a test run, maintenance, or servicing. -
Page 19: Specifications Of General Commercial Parts
4-2. Specifications of general commercial parts 4-2-1. Refrigerant pipes Do not reuse the existing pipes! [1] Piping materials/Wall thickness The design pressures of the liquid line and suction line are as shown in the table below. Liquid line (Unit outlet) Suction line (Unit inlet) Hot gas routing line 12.0 MPa... -
Page 20: Selecting The Installation Site
5. Selecting the installation site 5-1. Statutory compliance Select an installation location that is in compliance with the applicable laws and regulations related to noise, vibration, and installation environment. 5-2. Consideration for pollution prevention and environment protection Select an installation location in consideration of pollution prevention and environment protection. 5-3. -
Page 21: Required Space
5-5. Required space • Minimum installation spaces are shown below that are required for the use of the unit at the maximum ambient operating temperature. Up to three units can be installed side by side in each block. • Letters "D" and "h" in the figure represent arbitrary values. (e.g. 100, 200) (The air flow direction is upward in the examples.) 5-5-1. -
Page 22: Measures Against Strong Winds
5-6. Measures against strong winds Precautions for installing the unit in a place exposed to strong winds This unit is standard-equipped with air deflector grills to protect itself against headwinds. However, if the unit is installed on a roof or in an isolated place with no surrounding buildings, take appropriate measures so that the air discharge outlet on the unit is not exposed to winds. -
Page 23: Installation Work
6. Installation work • Do not install the unit indoor, in a depressed space, or in a halfway basement. 6-1. Progress of construction of building and construction conditions Perform installation work when the building is ready for the installation of the unit. 6-1-1. -
Page 24: Sound Insulation Work
Sandwich the damper pad between the unit and the base. Vibration damper pad ø18 hole Approx. 8 mm 75 mm Vibration damper pad (example) Sample of concrete base 6-1-4. Sound insulation work Attach sound insulation boards around the unit when installing the unit on a base that is more than 300 mm (12 in.) tall. (See the figure on the right.) However, keep a space of approximately 100 mm (4 in.) over the boards because complete insulation may inter-... -
Page 25: Refrigerant Piping Work
7. Refrigerant piping work 7-1. General information Do not reuse the existing pipes! • Improper design and installation of refrigerant piping may affect the function and life of cooling equipment, or occurrence of problems. Design and install a water piping system according to the applicable regulations and the following instructions. 7-1-1. -
Page 26: Pipe Size
Because the refrigerant oil of this unit is non-miscible, select the liquid piping size considering the refrigerant oil return. Model Suction pipe [mm (in.)] Liquid pipe [mm (in.)] ECOV-X15VA ø9.52 (3/8) ø6.35 (1/4) The pipe sizes shown above are standard pipe sizes. -
Page 27: Installation Of Liquid Pipe
7-3. Installation of liquid pipe 7-3-1. Installing the solenoid valve <liquid> Install the solenoid valve <liquid> right in front of the expansion valve (upstream side). Installing the solenoid valve near the outdoor unit may cause capacity shortage to the pump down and the high pressure switch may cut the unit. 7-3-2. -
Page 28: About The Evaporator To Be Connected
Hot gas inlet Pipe size [mm (in.)] figure on the right. Model Unit port Pipe locally 1/2[12.7] procured Hot gas outlet Elbow ECOV-X15VA ø9.52 ø9.52 (Field-supplied) (3/8) (3/8) (Unit: mm) Hot gas outlet <3/8 [9.52] Brazed> Hot gas inlet <3/8 [9.52] Brazed>... -
Page 29: Connecting Pipes
• There is no set-up for hot gas defrosting. Due to the use of independent local hot gas (e.g. floor heating), only hot gas pipe routing is available. • When using hot gas piping, ensure that refrigerant oil does not accumulate in the piping or heat exchanger. •... -
Page 30: Pipe Routing: Single And Collective Installations
7-6. Pipe routing: Single and collective installations 1) The pipe can be routed from the front, right, or bot- tom of the unit. When multiple units are installed collectively or consecutively, any unit that has an- other unit on its right cannot have a pipe routed on its right side. -
Page 31: Electrical Wiring
8. Electrical wiring 8-1. Notes on wiring • Install an earth leakage breaker. Installation must be according to the applicable laws and regulations. (Earth leakage breaker is required for all refrigerating appliances including show cases.) • Do not wire at any place where dew may drop from suction parts. •... -
Page 32: Wire Capacity
8-2. Wire capacity Maximum allowable voltage for this unit is shown in the figure. Wire capacity must be according to the applicable laws Stop and regulations. The range of allowable voltage is listed During operation Voltage drop B in the next section "Electrical characteristics". Voltage The wire size is the minimum value for the metal conduit Volt-... -
Page 33: Electrical Characteristics
8-3. Electrical characteristics Model ECOV-X15VA Power source Single phase, 220/230/240 V, 50 Hz Safety class Class I Electrical Electric power consumption <Note 1> 1.90 characteris- Running current (220V/230V/240V) <Note 1> 9.0/8.6/8.2 tics Starting current 5.5/5.3/5.1 Maximum current 10.5 Compressor Rotation per minute (RPM) 4200 Electric heater <oil>... -
Page 34: Connecting Wires
3. If necessary, connect the transmission line (MODBUS ). (See 8-6. Model Wire type Connected to Notes ECOV-X15VA Power supply line Power supply terminal block inside the unit control box (TB1) Control line (220 to 240 V) Auxiliary terminal block (1 to 32) Transmission line Terminals for transmission lines (+, -, SG) - ®... -
Page 35: Output Signal To External Devices
8-5. Output signal to external devices Operation signals can be output from the terminal block on the control box. [1] Alarm signal Alarm signals can be output from terminal blocks 7 and 23. The output signal voltage of terminal blocks 7 and 23 are 220 to 240 VAC. <Use a current of 0.01 to 0.3 A.> Alarm signal will be output if the refrigerator has come to an abnormal stop. - Page 36 [5] Precautions for screwing When replacing electrical parts inside the control box, use the following recommended tightening torques for screwing. Recommended tightening torque Recommended tighten- Screw ing torque (Nꞏm) Power supply terminal block (TB1) 1.0 to 1.3 Auxiliary terminal block (including terminal block for transmission lines) M3.5 0.82 to 1.0 Follow the procedure below to check that the screws are properly tightened.
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Page 37: How To Use Modbus
® 8-6. How to use MODBUS ® 8-6-1. Precautions for using MODBUS • Do not connect a power supply to the terminal block for transmission lines (+, -, SG). If connected, the electronic parts will burn out. ® • When connecting MODBUS wiring, be sure to connect to the terminals (+, -, SG) for transmission lines. -
Page 38: Electric Circuit Diagram
[3] Connecting the communication devices ® Connect the MODBUS communication devices with cables. ® Daisy-chain the MODBUS communication devices as shown in Figure 3-1. Communication may not be established properly if the devices are connected in the star wiring configuration or branched from the module as shown in Figure 3-2. -
Page 39: Air Tightness Test/Vacuum Drying
9. Air tightness test/Vacuum drying 9-1. Air tightness test 9-1-1. Purpose of air tightness test Check for any refrigerant leakage in the refrigerant pipes and the indoor unit. The condensing unit has been subjected to an air tightness test prior to shipping. 9-1-2. -
Page 40: Refrigerant Leakage Detection
6. Apply a foaming agent. If no bubbles occur, there are no leaks. Leave the system in the defined value for 24 hours. If the pressure is maintained, there are no leaks. When the outside air temperature changes by 1°C, the pressure changes by approximately 0.01 MPa. Adjust the test con- ditions as necessary. - Page 41 [3] Vacuum drying procedure Be sure to use a vacuum pump for vacuum drying of the system. Vacuum drying must be performed by a specialist. The low pressure is digitally displayed on the Main board. Unless the unit is energized during the vacuum drying, the low-pressure is not displayed on the Main board.
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Page 42: Connection Of The Vacuum Pump
9-2-3. Connection of the vacuum pump [1] ECOV-X15VA WT10434X01_en... -
Page 43: Procedures For Stopping The Vacuum Pump
9-2-4. Procedures for stopping the vacuum pump To prevent the backflow of vacuum pump oil to the unit, open the relief valve on the vacuum pump, or draw in air by loosening the charging hose. Then stop operating the vacuum pump. Use the same procedures when stopping a vacuum pump with a check valve. -
Page 44: Parts Names
2)Procedure to operate the check joint • Remove the cap, and turn the valve rod with a 4-mm Allen wrench. Turn the valve rod counterclockwise to open the valve, and clockwise to close it. • Tighten the cap to a torque of 15 Nꞏm at the completion of valve rod operation. Failure to replace the cap will lead to refrigerant leakage. -
Page 45: Refrigerant Charging
10. Refrigerant charging 10-1. Refrigerant charging procedure Charge the system with refrigerant from the high-pressure side first. Charging the system from the low-pressure side first may damage the compressor. Follow the instructions below to charge refrigerant. 1. Complete vacuum drying. 2. -
Page 46: Allowable Amount Of Refrigerant To Be Charged
10-2. Allowable amount of refrigerant to be charged Charge the refrigerant according to the table below. (Install an additional accumulator if the amount of refrigerant exceeds the allowable amount shown in the table.) (kg) Medium temperature (ET -5~-20°C) Low temperature (ET -20~-45°C) Pipe length Evaporator internal volume (L) Evaporator internal volume (L) -
Page 47: Insulating
10-3. Insulating • Insulating must be done after air tightness test. • The liquid pipe and suction pipe must be insulated. Refer to the table below. Use foamed polyurethane and styrol with no hygroscopicity for insulation. (Unit: mm) Pipe Insulation Cold storage Freezer storage Thickness of insulation... -
Page 48: Test Run
11. Test run 11-1. To ensure proper test run Check if the wiring work has been done properly. The crankcase heater that is used for preventing the foaming of lubricating oil is powered only when the compressor is After wiring work, be sure to measure the insulation resis- stopped. -
Page 49: Setting The Target Evaporation Temperature
11-3. Setting the target evaporation temperature Set the dip switch (SW2) according to the following table to set the target evaporation temperature. • Always turn off the power of the unit before setting the dip switch (SW2). 1: ON 0: OFF Dip switch (SW2) Dip switch (SW2) Target evaporation... -
Page 50: Test Run Procedure
11-4. Test run procedure 11-4-1. Initial processing It will take approximately two minutes (max. five minutes) for the low pressure to be displayed on the digital display on the MAIN board after the unit is turned on. If the low pressure does not appear on the digital display after a while, check for wiring errors. 1) What to expect during the initial processing During the initial setting of the LEV, the LEV will make clicking noises, but this is not a malfunction. -
Page 51: Display Of The Main Board (Inside The Control Box)
11-4-4. Display of the MAIN board (inside the control box) Operation status display on LED4 Symbol Operation status Compressor stoppage (by using operation switch) Compressor in operation LPoF Low-pressure cutoff function is stopped. Compressor stoppage (by using capacity control) Compressor preliminary stoppage (during the 3-minute restart delay mode) 000H Compressor error stoppage oIL1... -
Page 52: Preventing Short-Cycling Operation
11-5-2. Preventing short-cycling operation 1) Checking if the operation is in short-cycling or not Check the cycle of operation/stop time. If it is within 15 minutes, the operation is in short-cycling. Eliminate the cause of the short-cycling. The unit is equipped with a delay timer (at a maximum 200 seconds) to prevent frequent short-cycling operations. 2) Preventing short-cycling operation (frequent repeat of operation/stop) As an essential measure to prevent short-cycling operation, the operation pattern needs to be set as shown in the figure. -
Page 53: Post-Installation Inspection
12. Post-installation inspection 12-1. Installation check list When the installation work is complete, inspect the installation according to the following list. If there are any problems, be sure to correct them. (Otherwise, not only may the functionality be restricted, safety may also be compromised.) Check items Details... -
Page 54: Check Items For Refrigerant Circuit Components
12-2. Check items for refrigerant circuit components Check item Causes or remedies Check for any dirt or clogging in the strainer. Check that the heat exchanger fins are not clogged. Check the strainer. A clogged condenser fin can cause the high pressure and discharge gas temperature to rise dangerously high. -
Page 55: Providing Guidance On The Usage To The End Users
13. Providing guidance on the usage to the end users • According to this Installation Manual and a separately provided instruction manual, explain the correct use to the end users. • If the end users are not present, provide explanation to the owner and/or building manager. •... -
Page 56: Cleaning The Discharge Heat Duct Mesh
13-7. Cleaning the discharge heat duct mesh Keep the discharge heat duct mesh on the divider in the center of the unit clean and clog-free. WT10434X01_en... -
Page 57: Specifications
Sound pressure level -35°C 54 dB (A) Temperature range -25°C to 43°C MITSUBISHI ELECTRIC CORPORATION AIR-CONDITIONING & Contact details REFRIGERATION SYSTEMS WORKS 5-66, Tebira, 6-Chome, Wakayama City 640-8686, Japan *1 Measured at a distance of 1 meter from the product. - Page 58 IX, and/or to the directive 2006/66/EC Article 20 Information for end-users and Annex II. Your MITSUBISHI ELECTRIC product is designed and manufactured with high quality materials and com- ponents which can be recycled and/or reused. This symbol means that electrical and electronic equipment, batteries and accumulators, at their end-of-life, should be disposed of separately from your household waste.
- Page 60 Please be sure to put the contact address/telephone number on this manual before handing it to the customer. HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN WT10434X01_en...
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