Mitsubishi Electric PFAV-P250VM-E Data Book
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Mitsubishi Electric PFAV-P250VM-E Data Book

Air conditioning systems
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AIR CONDITIONING SYSTEMS
Model PUHY-P-Y(S)HM-A
PFAV-P-VM-E(-F)
DATA BOOK

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Summary of Contents for Mitsubishi Electric PFAV-P250VM-E

  • Page 1 AIR CONDITIONING SYSTEMS Model PUHY-P-Y(S)HM-A PFAV-P-VM-E(-F) DATA BOOK...

  • Page 2: Table Of Contents

    Contents ! . General Cautions % ! . System Design 1. Indoor Unit Line-up·········································1 1. Outdoor Installation······································59 2. Temperature range ·········································2 (1) Requirement on installation site 3. Notes on selecting equipments·····················3 (2) Spacing (1) Notes on using the Fresh Air Intake type units (3) Piping direction (4) Weather countermeasure ! ! .

  • Page 3: General Cautions

    ! . General Cautions 1. Indoor Unit Line-up Model type Standard type Model size P250 P500 P750 Nominal HP 10HP 20HP 30HP Nominal cooling cap. *1 25.0 50.0 71.0 Nominal heating cap. *2 28.0 56.0 80.0 Floor standing PFAV-P-VM-E Connectable outdoor unit type PUHY-P250YHM-A PUHY-P500YSHM-A PUHY-P750YSHM-A...

  • Page 4: Temperature Range

    2. Temperature range Standard type Cooling Heating Wet-bulb temperature Dry-bulb temperature Indoor temperature 10~25˚C [50~77˚F] (Note 1) 15~28˚C [59~82˚F] Dry-bulb temperature Wet-bulb temperature Outdoor temperature -5~43˚C [23~109˚F] -20~15.5˚C [-4~60˚F] Note 1. If units are operated for a long time at the dew point temperature of 23˚C [73˚F] or more, condensate may collect and drip from the indoor units.

  • Page 5: Notes On Selecting Equipments

    3. Notes on selecting equipments (1) Notes on using the Fresh Air Intake type units 1Fresh air intake type indoor units supply pretreated outside air into the room. This type of units are not designed to handle internal thermal load. Use other types of air conditioning units (e.g., CITY MULTI system) that are capable of handling internal thermal load in combination with the Fresh Air Intake type units.
  • Page 6 4Fan control The unit may be forced to operate in the heating mode to prevent cold draft when the return air temperature (outside air temperature sensor reading) reaches 5˚C[41˚F] or below. At the time of factory shipment, fan setting is made so that the fan will stop during the defrost cycle and when there is a problem with the entire refrigerant systems.

  • Page 7: Indoor Unit

    ! ! . Indoor Unit 1. Specifications (1) Standard type Indoor PFAV-P250VM-E PFAV-P500VM-E PFAV-P750VM-E PUHY-P250YHM-A PUHY-P750YSHM-A PUHY-P500YSHM-A Model Name (PUHY-P350YHM-A + (PUHY-P250YHM-A x 2, Outdoor PUHY-P400YHM-A, CMY-Y100VBK2) CMY-Y200VBK2) Cooling 25.0 (Maximum28.0) 50.0 (Maximum56.0) 71.0 (Maximum 80.0) System capacity 28.0 (Maximum 31.5) 56.0 (Maximum 63.0)
  • Page 8 (2) Fresh air intake type Indoor PFAV-P300VM-E-F PFAV-P600VM-E-F PFAV-P900VM-E-F PUHY-P250YHM-A PUHY-P500YSHM-A PUHY-P750YSHM-A Model Name (PUHY-P250YHM-A x 2, (PUHY-P350YHM-A + Outdoor CMY-Y100VBK2) PUHY-P400YHM-A, CMY-Y200VBK2) Cooling 28.0 (Maximum 33.5) 56.0 (Maximum 67.0) 80.0 (Maximum 100.0) System capacity 26.5 (Maximum 28.0) 50.0 (Maximum 56.0) 71.0 (Maximum 80.0) Heating Cooling...

  • Page 9: External Dimensions

    2. External dimensions (1) Standard type •PFAV-P250VM-E Unit:mm...
  • Page 10 •PFAV-P500VM-E Unit:mm...
  • Page 11 •PFAV-P750VM-E Unit:mm...
  • Page 12 (2) Fresh air intake type •PFAV-P300VM-E-F Unit:mm...
  • Page 13 •PFAV-P600VM-E-F Unit:mm...
  • Page 14 •PFAV-P900VM-E-F Unit:mm...

  • Page 15: Center Of Gravity

    3. Center of gravity (1) Indoor unit •PFAV-P250,P500 (P300-F, P600-F) Model PFAV-P250VM-E 1234 PFAV-P500VM-E 1450 1144 PFAV-P300VM-E-F 1234 PFAV-P600VM-E-F 1450 1113 •PFAV-P750 (P900-F) 1774 Model PFAV-P750VM-E 1020 PFAV-P900VM-E-F...

  • Page 16: Electrical Wiring Diagram

    4. Electrical wiring diagram (1) Standard type •PFAV-P250, 500VM-E...
  • Page 17 •PFAV-P750VM-E...
  • Page 18 (2) Fresh air intake type •PFAV-P300, 600VM-E-F...
  • Page 19 •PFAV-P900VM-E-F...

  • Page 20: Sound Pressure Levels

    5. Sound Pressure Levels •PFAV-P250VM-E Power sorce : 3N 380/400/415V 50/60Hz Measurement location 50Hz, 60Hz NC Curve NC-70 NC-60 NC-50 NC-40 NC-30 63Hz 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz dB(A) 50Hz 46.5 45.5 NC-20 ·Approximate minimum 60Hz 58.5 47.5 38.5...

  • Page 21: Pfav-P300Vm-E-F 1234

    •PFAV-P750VM-E Power sorce : 3N 380/400/415V 50/60Hz Measurement location 50Hz/60Hz NC Curve NC-70 NC-60 NC-50 NC-40 NC-30 63Hz 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz dB(A) 50Hz 72.5 63.5 62.5 62.5 44.5 NC-20 ·Approximate minimum 60Hz 72.5 63.5 62.5 62.5 44.5 audible limit on continuous noise.

  • Page 22: Pfav-P600Vm-E-F 1450

    •PFAV-P600VM-E-F Power sorce : 3N 380/400/415V 50/60Hz Measurement location 50Hz, 60Hz NC Curve NC-70 NC-60 NC-50 NC-40 NC-30 63Hz 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz dB(A) 50Hz 60.5 45.5 34.5 27.5 NC-20 ·Approximate minimum 60Hz 69.5 61.5 54.5 46.5 34.5 audible limit on continuous noise.

  • Page 23: Vibration Levels

    6. Vibration levels •PFAV indoor unit PFAV Unit Measurement Concrete location 20cm Model Vibration Levels [dBA] PFAV-P250,500,750VM-E 40 or less PFAV-P300,600,900VM-E-F...

  • Page 24: Fan Characteristic Curves

    7. Fan characteristic curves •PFAV-P250VM-E 50Hz ······Standard 2.2kW Internal resistance Airflow rate < m / min > 60Hz ······Standard 2.2kW Internal resistance Airflow rate < m / min >...
  • Page 25 Specification(Pulley , Belt ) Standard(Factory set) <50Hz> Motor pulley Fan pulley Over current relay V-belt (H) Motor Pitch diameter Nominal (Fan motor) <mm / in> Bore (E) <ø> Bore (E) <ø> (Changeability) <PCø> diameter (B) <ø> 2.2kW 140.2 1423 / 56 5.0A Motor 2.2kW,1450rpm <50Hz>...
  • Page 26 Variable-width pulley PC ø table Number of Pulley distance PC ø of variable-width turns to apply (mm) pulleys for 2.2kW motor Pulley 150.0 (0.4) 148.8 (0.8) 147.5 (1.1) 146.3 (1.5) 145.1 1·1/4 (1.9) 143.9 1·1/2 (2.3) 142.6 1·3/4 (2.6) 141.4 (3.0) 140.2 2·1/4...
  • Page 27 •PFAV-P500VM-E 50Hz ······Standard 5.5KW Internal resistance Airflow rate < m / min > 60Hz ······Standard 5.5KW Internal resistance Airflow rate < m / min >...
  • Page 28 Specification(Pulley , Belt ) Standard(Factory set) <50Hz> Motor pulley Fan pulley Over current relay V-belt (H) Motor Nominal Nominal (Fan motor) <mm / in> Bore (E) <ø> Bore (E) <ø> diameter (B) <ø> diameter (B) <ø> 5.5kW 1042 / 41 Motor 5.5kW,1450rpm <50Hz>...
  • Page 29 Shape of the pulley (unit:mm) 12.5 (keyway) 12.5 Rz 6.3 Rz 6.3 Rz 6.3 Rz 3.2 :Pulley nominal diameter 34˚ Belt 161 < d 36˚ 201 < d 38˚ 16.5 40˚ H (outer center) * See p.40 for "How to choose the pulley."...
  • Page 30 •PFAV-P750VM-E 50Hz ······Standard 1100 1000 7.5kW Internal resistance Airflow rate < m / min > 60Hz ······Standard 1100 1000 7.5kW Internal resistance Airflow rate < m / min >...
  • Page 31 Specification(Pulley , Belt ) Standard(Factory set) <50Hz> Motor pulley Fan pulley Over current relay V-belt (H) Motor Nominal Nominal (Fan motor) <mm / in> Bore (E) <ø> Bore (E) <ø> diameter (B) <ø> diameter (B) <ø> 7.5kW 1347 / 53 Motor 7.5kW,1450rpm <50Hz>...
  • Page 32 Shape of the pulley (unit:mm) 12.5 (keyway) 12.5 Rz 6.3 Rz 6.3 Rz 6.3 Rz 3.2 :Pulley nominal diameter 34˚ Belt 161 < d 36˚ 201 < d 38˚ 16.5 40˚ H (outer center) * See p.40 for "How to choose the pulley."...
  • Page 33 •PFAV-P300VM-E-F 50Hz ······Standard 1.5kW Internal resistance Airflow rate < m / min > 60Hz ······Standard 1.5kW Internal resistance Airflow rate < m / min >...
  • Page 34 Specification(Pulley , Belt ) Standard(Factory set) <50Hz> Motor pulley Fan pulley Over current relay V-belt (H) Motor Pitch diameter Nominal (Fan motor) <mm / in> Bore <ø> Bore (E) <ø> (Changeability) <PCø> diameter (B) <ø> 1.5kW 1499 / 59 3.6A Motor 1.5kW,1450rpm <50Hz>...
  • Page 35 Variable-width pulley PC ø table Number of Pulley distance PC ø of variable-width turns to apply (mm) pulleys for 2.2kW motor Pulley 140.0 (0.4) 138.8 (0.8) 137.5 (1.1) 136.3 (1.5) 135.1 1·1/4 (1.9) 133.9 1·1/2 (2.3) 132.6 1·3/4 (2.6) 131.4 (3.0) 130.2 2·1/4...
  • Page 36 •PFAV-P600VM-E-F 50Hz ······Standard 2.2KW Internal resistance Airflow rate < m / min > 60Hz ······Standard 2.2KW Internal resistance Airflow rate < m / min >...
  • Page 37 Specification(Pulley , Belt ) Standard(Factory set) <50Hz> Motor pulley Fan pulley Over current relay V-belt (H) Motor Nominal Nominal (Fan motor) <mm / in> Bore (E) <ø> Bore (E) <ø> diameter (B) <ø> diameter (B) <ø> 2.2kW 1194 / 47 5.0A Motor 2.2kW,1450rpm <50Hz>...
  • Page 38 Shape of the pulley (unit:mm) (keyway) Rz 6.3 Rz 6.3 Rz 12.5 Rz 3.2 :Pulley nominal diameter 34˚ Belt 161 < d 36˚ 12.5 12.5 201 < d 38˚ 16.5 40˚ H (outer center) * See p.40 for "How to choose the pulley."...
  • Page 39 •PFAV-P900VM-E-F 50Hz 60Hz ······Standard ······Standard 1000 1000 3.7kW 3.7kW Internal Internal resistance resistance Airflow rate < m / min > Airflow rate < m / min >...
  • Page 40 Specification(Pulley , Belt ) Standard(Factory set) <50Hz> Motor pulley Fan pulley Over current relay V-belt (H) Motor Nominal Nominal (Fan motor) <mm / in> Bore (E) <ø> Bore (E) <ø> diameter (B) <ø> diameter (B) <ø> 3.7kW 1423 / 56 7.5A Motor 3.7kW,1450rpm <50Hz>...
  • Page 41 Shape of the pulley (unit:mm) 12.5 (keyway) 12.5 Rz 6.3 Rz 6.3 Rz 6.3 Rz 3.2 :Pulley nominal diameter 34˚ Belt 161 < d 36˚ 201 < d 38˚ 16.5 40˚ H (outer center) * See p.40 for "How to choose the pulley."...
  • Page 42 1347 / 53 35.5 Note1. Use two V-belts for P750 indoor unit. Note 1. When replacing the motor on site, reset the thermal relay accordingly. Note 2. Mitsubishi Electric shall not be held responsible for the pulley or motor modified on site.

  • Page 43: Optional Parts

    8. Optional parts (1) Plenum chamber -CC83PL-E For P250 indoor unit 1200 10- 3 Holes Branch duct hole (Knockout) Air outlet -CC85PL-E For P500 indoor unit 1420 10- 3 Holes Branch duct hole (Knockout) Side air outlet Air outlet -CC87PL-E For P750 indoor unit 1750 Air outlet...

  • Page 44: Outdoor Unit

    0.46 x 1 Motor output 0Pa(0mmH 0Pa(0mmH 0Pa(0mmH 0Pa(0mmH 0Pa(0mmH External static press. Compressor Type x Quantity Inverter scroll hermetic compressor Manufacture MITSUBISHI ELECTRIC CORPORATION Starting method Inverter Inverter Inverter Inverter Inverter Motor output 10.3 10.5 Case heater 0.035 0.035 0.035...

  • Page 45: External Dimensions

    2. External dimensions •PUHY-P250YHM-A(-BS) Unit:mm...
  • Page 46 •PUHY-P350,400YHM-A Unit:mm...
  • Page 47 •PUHY-P500YSHM-A(-BS) Unit:mm...
  • Page 48 •PUHY-P750YSHM-A(-BS) Unit:mm...

  • Page 49: Center Of Gravity

    3. Center of gravity • PUHY-P250YHM-A Model PUHY-P250YHM-A (-BS) Unit:mm • PUHY-P350, P400YHM-A 1220 Model PUHY-P350YHM-A (-BS) PUHY-P400YHM-A (-BS) Unit:mm 1060...

  • Page 50: Electrical Wiring Diagram

    4. Electrical wiring diagram •PUHY-P250, 350, 400YHM-A...

  • Page 51: Sound Pressure Levels

    5. Sound Pressure Levels •PUHY-P250YHM-A(-BS) Measurement location Standard 50/60Hz 50/60Hz NC-70 NC-60 NC-50 NC-40 NC-30 Approximate minimum audible limit on NC-20 dB(A) continuous noise Standard 50/60Hz 59.0 62.0 60.0 54.0 50.5 46.0 41.0 35.0 57.0 Low Noise Mode 50/60Hz 58.0 53.5 44.0 39.0 36.5 32.5 31.0 24.5 44.0 When Low Noise Mode is set,the A/C system's capacity is limited.
  • Page 52 •PUHY-P750YSHM-A(-BS) Measurement location Standard 50/60Hz 50/60Hz NC-70 NC-60 NC-50 NC-40 NC-30 dB(A) Approximate minimum Standard 75.0 68.0 64.5 60.0 56.5 53.0 49.5 43.0 63.5 50/60Hz audible limit on NC-20 Low Noise Mode 56.0 57.0 52.0 48.0 47.5 49.0 47.0 43.0 55.0 50/60Hz continuous noise...

  • Page 53: Optional Parts

    6. Optional parts (1) Outdoor twinning kit For PUHY-P-YSHM, following optional Outdoor Twinning Kit is needed to use to combine to refrigerant flows of its PUHY-P- YHM. Details of selecting the proper kit should be referred to the System Design Section. CMY-Y100VBK2 For Gas pipe: For Liquid pipe:...

  • Page 54: Capacity Tables

    ! %. Capacity Tables (1) Correction by temperature 1Cooling • P250 • P500 • Cooling capacity • Cooling capacity Indoor Temperature (˚CWB) Indoor Temperature (˚CWB) Outdoor temperature (˚CDB) Outdoor temperature (˚CDB) • Cooling input • Cooling input Indoor Temperature (˚CWB) Indoor Temperature (˚CWB) Outdoor temperature (˚CDB) Outdoor temperature (˚CDB)
  • Page 55 2Heating • P250 • P500 • Heating capacity • Heating capacity Indoor Temperature [˚CDB] Indoor Temperature [˚CDB] Outdoor temperature (˚CWB) Outdoor temperature (˚CWB) • Heating input • Heating input Indoor Temperature [˚CDB] Indoor Temperature [˚CDB] Outdoor temperature (˚CWB) Outdoor temperature (˚CWB) •...

  • Page 56: Correction At Frosting And Defrosting

    (2) Correction at frosting and defrosting • Table of correction factor at frosting and defrosting Outdoor temp. ˚CWB PUHY-P250YHM-A 1.00 0.95 0.84 0.83 0.83 0.87 0.90 0.95 0.95 0.95 0.95 PUHY-P500YSHM-A 1.00 0.98 0.89 0.86 0.89 0.90 0.92 0.95 0.95 0.95 0.95 PUHY-P750YSHM-A...

  • Page 57: (Cooling) (Heating)

    (4) Correction by indoor unit airflow rate • P250 • P500 • Cooling • Cooling 1.10 1.10 1.00 1.00 0.90 0.90 Airflow rate (m /min) Airflow rate (m /min) • Heating • Heating 1.10 1.10 1.00 1.00 0.90 0.90 Airflow rate (m /min) Airflow rate (m /min)

  • Page 58: Input Correction By Capacity

    (5) Input correction by capacity • P250 • P300-E-F • Cooling • Cooling 1.00 1.00 0.90 0.90 0.80 0.80 0.70 0.70 0.60 0.60 0.50 0.50 0.40 0.40 100% 100% Ratio of cooling capacity (*1) Ratio of cooling capacity (*1) • Heating •...

  • Page 59: Bypass Factor

    (6) Bypass factor • P250 • P750 0.40 0.40 0.30 0.30 0.20 0.20 0.10 0.10 0.00 0.00 Airflow rate (m /min) Airflow rate (m /min) • P500 • P300-E-F 0.50 0.30 0.40 0.20 0.30 0.20 0.10 0.10 0.00 0.00 Airflow rate (m /min) Airflow rate (m /min)

  • Page 60: Controller

    %. Controller 1. Local remote controller (1) MA Remote controller PAR-21MAA : built-in the indoor unit. Functions :Each unit :Each group :Each block :Each floor :Collective :Not available Description Operations Display Item ON/OFF Run and stop operation for a single group TIME SUN MON TUE WED THU FRI SAT TIMER Switches between Cool / Fan / Heat.

  • Page 61: System Design

    % ! . System Design 1. Outdoor Installation (1) Requirement on installation site 1. No direct thermal radiation to the unit; 2. No possibility of annoying the neighbors by the sound of the unit; 3. Avoid the sites where strong winds blow. 4.
  • Page 62 (2) Spacing • PUHY-P250YHM-A Unit : mm...
  • Page 63 (3) Piping direction a) Lifting method · When lifting the unit with ropes, run the ropes under the unit and use the lifting hole. · Support the unit at four points with two ropes, and avoid giving mechanical shock. · Suspension rope angle must be or less, so as to avoid compressing fan guard.
  • Page 64 b) IInstallation <Outdoor Unit> When the pipes and/or cables are routed at the bottom of the unit, make sure that the through hole at the base of the unit does not get blocked with the installation base. When the pipes are routed at the bottom of the unit, the base should be at least 100 mm [3-15/16 in.] in height. ·...
  • Page 65 d) Installation · Secure the unit with anchor bolts as shown in the figure below so that the unit will not topple over with strong wind or during an earthquake. · Install the unit on a durable base made of such materials as concrete or angle steel. ·...
  • Page 66 f ) Twinning on the outdoor unit side • The tilt angle of the twinning pipe The tilt angle of the twinning pipe must be within ±15 ° with the ground. Tilting the twinning pipe more than specified will cause damage to the unit. •...
  • Page 67 g) Twinning on the outdoor unit side See the following drawing for connecting the pipes between the outdoor units. <PUHY-P500YSHM-A> Field piping Twinning kit Field piping CAUTION The length of the straight pipe must be 500mm or longer. If not, it may cause improper operation.
  • Page 68 (4) Weather countermeasure In cold and/or snowy areas, sufficient countermeasures to wind and snow damages should be taken for operating unit in normal and good condition in winter time. Even in the other areas, full consideration is required for installation of unit in order to prevent abnormal operations caused by wind or snow. When rain and snow directly fall on unit in the case of air-conditioning operations in 10 or less degrees centigrade outdoor air, mount inlet and outlet ducts on unit for assuring stable operations.
  • Page 69 Countermeasure to wind Referring to the figure shown below, take appropriate measures which will suit the actual situation of the place for installation. A unit installed alone is vulnerable to strong winds. Select the installation site carefully to minimize the effect of winds.

  • Page 70: Indoor Installation

    2. Indoor Installation (1) Requirement on installation site 1. In the way that the supply air is evenly distributed throughout the room, 2. In a place where the intruding air does not affect the unit's performance, 3. In a place where the flow of supply or return air is not obstructed, 4.
  • Page 71 (2) Spacing • PFAV-P250,500VM-E (Unit mm) Optional plenum chamber P250: 800 or more P500: 1000 or more (Front space) Through hole for the remote controller Refrigerant pipes wiring to outdoor unit Drain pipe Power cable hole (380V or more) Wire hole for the device power supply P250: 500 or more 100 or more...
  • Page 72 • PFAV-P750VM-E (Unit mm) • PFAV-P900VM-E-F 1000 or more A (Front space) B Remote controller cable hole (to outdoor unit) Power cable Refrigerant pipe hole (380V (liquid) ormore) 750 or more 500 or more 400 or more Wood base • Select a solid surface, and install the unit on a wood base at least 8.5 cm in thickness to allow for proper discharge of drain water and to prevent vibration from the air conditioning units from being transmitted to the floor.
  • Page 73 (3) Installing the Indoor Unit WARNING Install the unit on a level surface. • If the unit is installed on an incline, water leakage or malfunctions may result. Check for straightness with a level. WARNING Do not stand on the unit. •...
  • Page 74 Notes on when an optional plenum chamber is installed The unit described in this manual is designed to be used with a duct. When an Optional plenum chamber is used, an adjustment of the pulley is required. • Refer to the manual that came with the plenum chamber for how to install it. Notes on how to remove the top front panel on the unit (P250, P500, P300-F,P600-F models) Before removing the top front panel (panel with a built-in remote controller) to adjust or replace the pulley or belt, or to install optional parts, remote controller cables need to be disconnected.
  • Page 75 Important notes on pulleys and pulley belts • Adjusting the variable-width pulley Adjust the PC ø of variable-width pulley according to the procedures described below. 1Loosen the setscrew holding the fixed and the sliding discs in place. 2Turn the sliding disc counter-clockwise until no gap is left (0 mm) between the fixed and the sliding discs.
  • Page 76 • Horizontal pulley alignment and proper belt tension (1) The fan pulley and the motor pulley must be aligned to meet the criteria shown in Figure 1 and Table 1. (2) Set the tension for the V-belt so that the deflection force falls within the range as shown in the table in ! !-7.
  • Page 77 Separating the indoor unit to allow for easy transportation Instructions for separating the indoor unit into parts P500, P600-F The indoor unit can be separated into the base block, fan block, and other parts. Place the unit on a level surface before separating the unit. Base block net weight The dimension of the base block after it is separated from the other parts is Net weight...
  • Page 78 • Instructions for separating the P750, P900-F indoor unit into parts The heat exchanger block can be separated from the main body of indoor unit (Brazing is required). Place the unit on a level surface before separating the unit. indicates the surface to split up. The dimensions of the base block after being separated from the heat exchanger block are marked with ✻...
  • Page 79 f. Remove supporting plates on both sides of the drain pan B This is the separation process. Use caution not to damage or scratch the unit during transportation. Take extra precautions when transporting the heat exchanger to prevent damaging its fin or heat transfer tube from shock.
  • Page 80 (5) Internal diagram • PFAV-P250VM-E • PFAV-P300VM-E-F Outlet Material: Material: Hot-dip galvanized steel sheet Hot-dip galvanized steel sheet Siroccofan Rear panel Material: Front panel (Upper) Hot-dip galvanized Material: steel sheet Alloyed hot-dip galvanized steel sheet Pulley Materials: Gray cast iron...
  • Page 81 • PFAV-P750VM-E • PFAV-P900VM-E-F Front panel (upper) Fan motor Material: Pulley Heat exchanger Material: Alloyed hot-dip Material: Material: Hot-dip galvanized Material: galvanized steel Hot-rolled mild steel Gray cast iron steel sheet Coil phosphorus deoxidized sheet sheet copper Scroll dumper Fins aluminum Air filter Material: PP Honeycomb...

  • Page 82: Piping Design

    The maximum operation pressure of R410A air conditioner is 4.30 MPa. The refrigerant piping should ensure the safety under the maximum operation pressure. MITSUBISHI ELECTRIC recommends pipe size as Table 1-1, or You shall follow the local industrial standard. Pipes of radical thickness 0.7mm or less shall not be used.

  • Page 83: Piping Design

    2. Piping Design 1-2-1. PUHY-P250 Piping Note1. "-" Note2. If the A/C system is designed to use cooling mode under outdoor temperature 0˚C, H’<=15m. Note3. As bents cause pressure loss on transportation of refrigerant, fewer bents design is better; Piping length needs to consider the actual length and equivalent length which bents are counted. Equivalent piping length (m)=Actual piping length+"M"...
  • Page 84 1-2-2. PUHY-P500, 750 Piping Note1. "-" Note2. If the A/C system is designed to use cooling mode under outdoor temperature 0˚C, H’<=15m. Note3. As bents cause pressure loss on transportation of refrigerant, fewer bents design is better; Piping length needs to consider the actual length and equivalent length which bents are counted. Equivalent piping length (m)=Actual piping length+"M"...
  • Page 85 1-2-3. PUHY-P-YHM's refrigerant charging calculation Sample connection (with PFAV-P600VM-E-F) Note1. "-" Note2. If the A/C system is designed to use Cooling-mode under Outside temperature 0˚C, H’<=15m. Note3. As bents cause pressure loss on transportation of refrigerant, fewer bents design is better; Piping length needs to consider the actual length and equivalent length which bents are counted.

  • Page 86: Wiring Design

    Over-current protector Wiring breaker Non-fuse breaker Outdoor unit *1 The Ground-fault interrupter should support Inverter circuit. (e.g. Mitsubishi Electric's NV-C series or equivalent). Indoor unit *2 Ground-fault interrupter should combine using of local switch or wiring breaker. System controller *3 It shows data for B-type fuse of the breaker for current leakage.
  • Page 87 Over-current protector Wiring breaker Non-fuse breaker Outdoor unit *1 The Ground-fault interrupter should support Inverter circuit. (e.g. Mitsubishi Electric's NV-C series or equivalent). Indoor unit *2 Ground-fault interrupter should combine using of local switch or wiring breaker. System controller *3 It shows data for B-type fuse of the breaker for current leakage.

  • Page 88: Electrical Work

    2. Electrical work (1) Power cable specifications Thickness of wire for main power supply, capacities of the switch and system impedance Minimum wire thickness (mm Local swtich (A) Breaker for Model Breaker for current leakage Main cable Branch Capacity Fuse Ground wiring (NFB) (A) PUHY-P250...

  • Page 89: M-Net Control

    3. M-NET control Control wiring depends on system configurations. Be sure to read the section "4. An Example of a System to which an MA Remote Controller is connected" before starting wiring work. (1) Types and maximum allowable length of cables Control lines are categorized into two types: transmission line and remote controller line.
  • Page 90 1Address setting The need for address settings and the address setting range depend on the system configuration. See "4. An Example of a System to which an MA Remote Controller is connected" for details. Address set at Address setting Unit or controller Mark Setting procedure time of shipment...

  • Page 91: An Example Of A System To Which An Ma Remote Controller Is Connected

    4. An Example of a System to which an MA Remote Controller is connected ❈ P750,P900-F models only...
  • Page 93 (* L2 + L31 + L4 + L32 200m [656ft])

  • Page 94: System Control

    5. System control (1) System control for the indoor units 1. Various start/stop control (Indoor unit setting) (1) The restart setting for the indoor unit can be set with the DIP SW (SW1-9, 10) on the unit. Setting(SW1)(Note Function Operation recovery after power failure Indoor unit will go into operation within approximately five minutes of Power reset power restoration regardless of its operation status before power off...
  • Page 95 (3) Emergency Operation Mode...
  • Page 97 (2) System control for the outdoor units 1. Various types of control using input-output signal connector on the outdoor unit (various connection options) Take out signals from the outdoor unit that is designated as OC if multiple outdoor units exist in a single system.

  • Page 100: Caution For Refrigerant Leakage

    Note 1. Countermeasure 3 should be done in a proper way in which the fresh air supply shall be on whenever the leakage happens. Note 2. In principle, MITSUBISHI ELECTRIC requires proper piping design, installation and air-tight testing after installation to avoid leakage happening.
  • Page 101 DATA BOOK PUHY-P-Y(S)HM-A PFAV-P-VM-E(-F) Issued in Jul. 2009 MEE08K100 New publication effective Jul. 2009. Printed in Japan Specifications subject to change without notice.

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