Mitsubishi Electric PFD-P250VM-E Service Manual
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- Installation manual (88 pages) ,
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Summary of Contents for Mitsubishi Electric PFD-P250VM-E
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Page 1: Table Of Contents
PUHY-P-YGM-A PFD-P-VM-E Close control CONTENTS 1. Specifications ······························································ ······························································ 1-1 Main Features ····· 1-2 List of Possible Combinations of Indoor and Outdoor Units 1-3 Unit Specifications ························································· 2. Capacity Curves ························································· ························································· 2-1 Cooling Capacity ························································· 2-2 Cooling Input ························································· 2-3 SHF Curves 2-4 Correction by refrigerant piping length ····························... -
Page 3: Specifications
MITSUBISHI ELECTRIC CORPORATION PAC-SC50KUA When using a PFD-P250VM-E as an indoor unit, connect an outdoor unit PUHY-P250YGM-A to each indoor unit and operate with a built-in remote control for the indoor unit. 1: Bold line indicates refrigerant piping (gas/liquid). This system consists of single refrigerant circuit. -
Page 4: List Of Possible Combinations Of Indoor And Outdoor Units
POWER RATING WEIGHT 2.11kg SERIAL No. MITSUBISHI ELECTRIC CORPORATION PAC-SC50KUA When using a PFD-P500VM-E as an indoor unit, connect 2 PUHY-P250YGM-A outdoor units to each indoor unit and operate with a built-in remote control for the indoor unit. At factory shipment, this model of indoor unit is designed and set to accommodate a single refriger- ant circuit. -
Page 5: Unit Specifications
*2. It is measured in anechoic room. Installation/foundation work, electrical connection work, duct work, insulation work, power source switch, and other items shall be referred to the Installation Manual. (2) Indoor Unit Model name PFD-P250VM-E PFD-P500VM-E Cooling Heating Cooling Heating System capacity 28.0... -
Page 6: Capacity Curves
2. Capacity Curves 2-1. Cooling Capacity Indoor unit inlet temperature (˚CWB) Outdoor unit inlet temperature (˚CDB) 2-2. Cooling Input Indoor unit inlet temperature (˚CWB) Outdoor unit inlet temperature (˚CDB) The correction curves indicate the values measured at the point where the compressor was operated at its maximum capacity. -
Page 7: Shf Curves
2-3. SHF Curves Standard Capacity Ratio 130% 120%110%100% 90% Indoor Temperature 27˚CDB 0.93 RH (%) Standard Capacity Ratio 130% 120%110%100% 90% Indoor Temperature 24˚CDB RH (%) Operation Temparature Range : Indoor : 12˚CWB~24˚CWB Outdoor : -15˚CDB~43˚CDB (RH : 30~80%) Standard Point " "... -
Page 8: Correction By Refrigerant Piping Length
2-4. Correction by refrigerant piping length To obtain a decrease in cooling/heating capacity due to refrigerant piping extension, multiply by the capacity correction factor based on the refrigerant piping equivalent length in the table below. Piping equivalent length (m) • How to obtain piping equivalent length Equivalent length = (Actual piping length to the farthest indoor unit) + (0.50 number of bent on the piping)m 2-5. -
Page 9: Sound Levels
3. Sound Levels 3-1. Noise Level (1) Outdoor Unit Measured point Noise Level Series (dB [Type A]) PUHY-P250YGM-A PUHY-P500YGM-A 60/61 (50Hz/60Hz) (2) Indoor Unit Noise Level Series (dB [Type A]) PFD-P250VM-E Measured point PFD-P500VM-E... -
Page 10: Nc Curves
1000 2000 4000 8000 1000 2000 4000 8000 OCTAVE BAND CENTER FREQUENCIES (Hz) OCTAVE BAND CENTER FREQUENCIES (Hz) (External static (External static PFD-P250VM-E PFD-P500VM-E pressure 120Pa) pressure 120Pa) 63Hz 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz dB(A) 63Hz... -
Page 11: External Dimensions
4. External Dimensions PUHY-P250YGM-A Unit : mm... - Page 12 PUHY-P500YGM-A Unit : mm...
- Page 13 PFD-P250VM-E Unit : mm...
- Page 14 PFD-P500VM-E Unit : mm...
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Page 15: Electrical Wiring Diagrams
5. Electrical Wiring Diagrams PUHY-P250YGM-A (Connected with PFD series) - Page 16 PUHY-P500YGM-A (Connected with PFD series)
- Page 17 PFD-P250VM-E...
- Page 18 PFD-P500VM-E...
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Page 19: Refrigerant Circuit Diagram And Thermal Sensor
6. Refrigerant Circuit Diagram And Thermal Sensor PUHY-P250YGM-A... - Page 20 PUHY-P500YGM-A...
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Page 21: System Design
7. System Design 7-1.Refrigerant Piping System Sample connection <Refrigerant system with one outdoor unit> <Refrigerant system with two outdoor units> Outdoor unit Outdoor unit Indoor unit Indoor unit Allowable piping Farthest piping length(L) 150 m or less in actual length length Allowable height Height difference between indoor... -
Page 22: Control Wiring
7-2.Control Wiring Restrictions when the PFD-type indoor units are connected (related to the system) 1. It is necessary to rewrite the S/W on the controller circuit board of the outdoor unit connected to the PFD-type indoor units. 2. The outdoor units whose S/W is changed to the dedicated S/W described above cannot be con- nected to the indoor units other than the PFD-type indoor units. -
Page 23: Types Of Switch Settings And Setting Methods
2 Remote control wiring MA remote controller Cable type VCTF · VCTFK · CVV · CVS · VVR · VVF · VCT No. of cable 2-core cable Wiring specifications 0.3~1.25mm Diameter (0.75~1.25mm Total Length Maximum length: 200 m 1: “MA remote controller” includes MA remote controller, Simple MA controller, and wireless remote controller. 2: Cables with a diameter of 0.75mm or smaller recommended for easier handling. - Page 24 (2) Power supply switch connector connection on the outdoor unit (Factory setting: The male power supply switch connector is connected to CN41.) Grouping the indoor Connection to Power supply unit units connected to Grouping system the system for transmission Power supply switch connector connection different outdoor controller lines...
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Page 25: Sample System Connection
7-4.Sample System Connection (1) An example of a system to which an MA remote controller is connected 1 System connected to one outdoor unit Control Wiring Diagram Leave the male connector on CN41 as it is. One indoor controller (controller circuit board) is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) TB5-1... - Page 26 (1) An example of a system to which an MA remote controller is connected 2 System connected to two outdoor units Control Wiring Diagram Disconnect the male power supply connector from CN40 and connect it to CN41. One indoor controller (controller circuit board) is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards) TB5-1...
- Page 27 (1) An example of a system to which an MA remote controller is connected 3 System in which two MA remote controllers are connected to one indoor unit Control Wiring Diagram Leave the male connector on CN41 as it is. One indoor controller (controller circuit board) is equipped in the indoor unit (10HP), and two indoor controllers (controller circuit boards)
- Page 28 (1) An example of a system to which an MA remote controller is connected 4 System in which two indoor units are grouped with the MA remote controller Control Wiring Diagram Leave the male connector Leave the male connector on CN41 as it is. on CN41 as it is.
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Page 29: External Input/Output Specifications
7-5.External input/output specifications (1) Input/output specifications Input Usage Signals Function Start/stop Turning · Pulse [Factory setting: Dip SW1-9 ON] ON/OFF (a-contact with voltage/without the indoor voltage) 1 unit <With voltage> Power Source: DC12~24V Electrical Current: Approximately 10mA (DC12V) <Standard Pulse> over 200ms over 200ms (Pulse powering time) - Page 30 (2) Wiring External input/output board Input with voltage TB23 External power source SW12 Stop/Start Short Circuit Input without voltage TB21 CN53 Common SW11 Stop/Start Short Circuit Relay Contact Point Output TB22 Power Source for Display No.1 Operation Status CN54 No.1 Error Status No.2 Operation Status No.2 Error Status 20HP only...
- Page 31 (3) Wiring Method 1 Check the indoor unit setting (Refer to 7-5.(2) Wiring ) 2 When using the external output function, connect each signal line to External output Terminal (TB22) on the unit, depending on the usage. 3 When using external input function, peal the outer layer of the signal line off, and connect it to external input terminal (TB21 or TB23) on the unit, depending on the usage.
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Page 32: Air Conditioning The Computer Room
8. Air Conditioning the Computer Room 8-1 Main Features of the Floor-Duct Air Conditioners This system is installed by building a floor over an existing floor and using the space between these two floors as an air-conditioning duct. This system has the following characteristics: 1 The temperature and humidity can efficiently and reliably be controlled, since the air-conditioned air is sent directly to the machine. -
Page 33: Step-By-Step Plan For The Implementation Of The Air-Conditioning
8-3 Step-by-Step Plan for the Implementation of the Air-Conditioning Purpose Making decisions on the computer system Basic Accommodates possible future expansion (ensuring the acquisition route) Conditions Operation schedule Back-up system (in case of breakdowns, power outage, water-supply cut offs etc.) Air conditioning methods (continuous, floor-duct type etc.) Securing Computer room, CVCF room, MT Disk Storage room... -
Page 34: Conditions For The Installation Of Computer-Room Air Conditioners
8-4 Conditions for the Installation of Computer-Room Air Conditioners (1) Outdoor Temperature and Humidity Generally the values set for general air conditioners are used, although the value higher than the maxi- mum outdoor temperature and humidity may be set for devices like computer-room air conditioners that must keep the air temperature and humidity under predetermined levels. -
Page 35: Setting The Air Conditioners
8-5 Setting the Air conditioners (1) Air-Conditioning Load 1 Once the floor plan is made and the conditions for the air-conditioning system are set, air conditioning capacity has to be determined by calculating the load. 2 Unlike the outdoor air, computer load remains constant throughout the year. However, it is possible that there are considerable fluctuations within a day. - Page 36 (2-3) Calculating the Load and Selecting a Model Calculate the temperature difference by setting the outdoor temperature; then, calculate hourly loads. The chart shows the result of a calculation, supposing that the system reaches its highest load at 12 o'clock. Outdoor temperatures in this example Summer : 32˚CDB relative humidity 60% Winter : -2˚CDB relative humidity 42%...
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Page 37: Automatic Control Of The Computer Room
8-6 Automatic Control of the Computer Room Example PFD-P500VM-E automatically controls the cooling temperature with a built-in controller. (suction temperature or discharge temperature control) This unit is designed for high sensible-heat specifications, and it does not include a humidifier or a dehumidi- fier. -
Page 38: Maintenance/Inspection
9. Maintenance/Inspection 9-1. Maintenance/Inspection Schedule Having the units inspected by a specialist on a regular basis, in addition to regular maintenance such as changing the filters, will allow the users to use them safely and in good condition for an extended period of time. - Page 39 Details of Maintenance/Inspection Inspection Unit Parts Check points Assessment What to do Cycle Fan motor · Check for unusual noise · Free of unusual noise Replace when insulation · Measure the insulation · Insulation resistance over 1MΩ resistance is under 1MΩ resistance Bearing ·...
- Page 41 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Issued in Mar. 2006 MEE05K442 New publication, effective Mar. 2006 Printed in Japan Specifications subject to change without notice...