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Mitsubishi Electric PWFY-P-NMU-E-AU Engineering Manual
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Mitsubishi Electric PWFY-P-NMU-E-AU Engineering Manual

Mitsubishi Electric PWFY-P-NMU-E-AU Engineering Manual

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HYDRONIC HEAT EXCHANGER UNITS
PWFY-P-NMU-E-BU/-AU
1. GENERAL DESCRIPTION ....................................................................................................................................PWFY-2
2. SPECIFICATIONS .................................................................................................................................................PWFY-3
3. EXTERNAL DIMENSIONS ....................................................................................................................................PWFY-6
4. CENTER OF GRAVITY .........................................................................................................................................PWFY-8
5. ELECTRICAL WIRING DIAGRAMS ......................................................................................................................PWFY-9
6. REFRIGERANT CIRCUIT DIAGRAMS ...............................................................................................................PWFY-11
7. SOUND PRESSURE LEVELS AND NC CURVES .............................................................................................PWFY-12
8. VIBRATION LEVELS ...........................................................................................................................................PWFY-13
9. CAPACITY TABLES .............................................................................................................................................PWFY-14
9-1.
Correction by Temperature ........................................................................................................................PWFY-14
9-2.
Water Pressure Drop .................................................................................................................................PWFY-24
10. OPTIONAL PARTS ..............................................................................................................................................PWFY-25
11. SYSTEM DESIGN ...............................................................................................................................................PWFY-26
11-1. Electrical Work ..........................................................................................................................................PWFY-26
11-2. M-NET Control ..........................................................................................................................................PWFY-27
11-3. Installation .................................................................................................................................................PWFY-32
PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)
PWFY-1

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Summary of Contents for Mitsubishi Electric PWFY-P-NMU-E-AU

  • Page 1: Table Of Contents

    8. VIBRATION LEVELS ............................PWFY-13 9. CAPACITY TABLES .............................PWFY-14 9-1. Correction by Temperature ........................PWFY-14 9-2. Water Pressure Drop ..........................PWFY-24 10. OPTIONAL PARTS ..............................PWFY-25 11. SYSTEM DESIGN ...............................PWFY-26 11-1. Electrical Work ............................PWFY-26 11-2. M-NET Control ............................PWFY-27 11-3. Installation ..............................PWFY-32 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-1...

  • Page 2: General Description

    50 to 100% <PWFY-P36,P72NMU-E-AU> PWFY with Only standard Only PWFY standard indoor units indoor units 50 to 150% 50 to 150% R2/WR2 series 50 to 100% 50 to 130% 50 to 130% Y/H2i/WY series 50 to 100% PWFY-2 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)

  • Page 3: Specifications

    * Please do not use groundwater and well water. to rounding variation. * Please do not use it as a drinking water. Discharge water from unit is not potable. Do not connect the output directly to a potable system. PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-3...
  • Page 4 * Please do not use groundwater and well water. * Please do not use it as a drinking water. Discharge water from unit is not possible. Do not connect the output directly to a potable system. PWFY-4 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)
  • Page 5 * Please do not use groundwater and well water. * Please do not use it as a drinking water. Discharge water from unit is not potable. Do not connect the output directly to a potable system. PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-5...

  • Page 6: External Dimensions

    3. EXTERNAL DIMENSIONS PWFY-P36NMU-E-BU PWFY-6 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)
  • Page 7 3. EXTERNAL DIMENSIONS PWFY-P36,72NMU-E-AU PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-7...

  • Page 8: Center Of Gravity

    17-23/32 (450) 11-13/16 (300) 19-11/16 (500) 17/32 (13) 8-3/32 (205) 1-7/8 (47) 20-11/16 (525) Model PWFY-P36NMU-E-BU 10-23/32 (272) 13 (355) 4-11/16 (119) PWFY-P36NMU-E-AU 11-13/32 (289) 13-5/8 (346) 4-1/16 (103) PWFY-P72NMU-E-AU 10-29/32 (277) 13-11/16 (347) 3-29/32 (99) PWFY-8 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)

  • Page 9: Electrical Wiring Diagrams

    5. ELECTRICAL WIRING DIAGRAMS PWFY-P36NMU-E-BU PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-9...
  • Page 10 5. ELECTRICAL WIRING DIAGRAMS PWFY-P36,72NMU-E-AU PWFY-10 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)

  • Page 11: Refrigerant Circuit Diagrams

    63HS 63LS TH11 Water outlet screw Brazed TH13 63H1 COMP PWFY-P36NMU-E-AU TH23 Brazed Water outlet screw LEV1Wa TH22 Brazed Water inlet screw PWFY-P72NMU-E-AU TH23 Brazed Water outlet screw LEV1Wa TH22 Brazed Water inlet LEV1Wb screw PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-11...

  • Page 12: Sound Pressure Levels And Nc Curves

    PWFY-P36, 72NMU-E-AU NC-70 3-1/4 ft. (1m) NC-60 Measurement location NC-50 NC-40 NC-30 NC-20 Approximate minimum audible limit on continuous noise Octave band center frequencies <Hz> dB(A) 60Hz 42.0 32.0 33.0 25.0 22.5 14.5 15.0 12.0 29.0 PWFY-12 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)

  • Page 13: Vibration Levels

    8. VIBRATION LEVELS VIBRATION LEVELS PWFY-P36NMU-E-BU Service panel Measurement location Concrete 7-7/8 in (200mm) 3-15/16 in (100mm) Model Vibration Levels[dBA] PWFY-P36NMU-E-BU PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-13...

  • Page 14: Capacity Tables

    1. 1 1. 2 1. 0 1. 1 0. 9 1. 0 0. 8 0. 9 0. 7 0. 8 0. 6 0. 7 0. 5 0. 6 0. 5 0. 4 Outdoor Temperature(FDB) Outdoor Temperature(FWB) PWFY-14 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)
  • Page 15 1. 2 1. 1 1. 1 1. 0 1. 0 0. 9 0. 9 0. 8 0. 8 0. 7 0. 7 0. 6 0. 6 0. 5 0. 5 0. 4 Outdoor Temperature(FDB) Outdoor Temperature(FWB) PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-15...
  • Page 16 1. 1 1. 2 1. 0 1. 1 0. 9 1. 0 0. 8 0. 9 0. 7 0. 8 0. 6 0. 7 0. 5 0. 6 0. 4 0. 5 Outdoor Temperature(FDB) Outdoor Temperature(FWB) PWFY-16 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)
  • Page 17 0. 6 0. 7 0. 5 0. 6 0. 4 0. 5 - 5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Outdoor Temperature(FWB) Outdoor Temperature(FDB) PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-17...
  • Page 18 0. 8 0. 7 0. 7 0. 6 0. 6 0. 5 0. 5 0. 4 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Outdoor Temperature(FDB) Outdoor Temperature(FWB) PWFY-18 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)
  • Page 19 1. 4 1. 1 1. 2 1. 0 0. 9 1. 0 0. 8 0. 8 0. 7 0. 6 0. 6 0. 5 0. 4 - 15 - 10 - 5 Outdoor Temperature(FDB) Outdoor Temperature(FWB) PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-19...
  • Page 20 Boost er uni t i nl et - wat er t emp.[ F] Out door t emp. [ FWB] Boost er uni t i nl et - wat er t emp. [ F] Out door t emp. [ FWB] PWFY-20 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)
  • Page 21 Boost er uni t i nl et - wat er t emp. [ F] Out door t emp. [ FWB] Boost er uni t i nl et - wat er t emp. [ F] Out door t emp. [ FWB] PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-21...
  • Page 22 Boost er uni t i nl et - wat er t emp. [ F] Out door t emp. [ FWB] Boost er uni t i nl et - wat er t emp. [ F] Out door t emp. [ FWB] PWFY-22 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)
  • Page 23 Boost er uni t i nl et - wat er t emp. [ F] Out door t emp. [ FWB] Boost er uni t i nl et - wat er t emp. [ F] Out door t emp. [ FWB] PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-23...

  • Page 24: Water Pressure Drop

    20 (60) 16.6 (50) PWFY-P36NMU-E-AU 13.6 (40) 10 (30) 6.6 (20) 3.3 (10) 2.2 (0.5) 4.4 (1) 6.6 (1.5) 8.8 (2) 11 (2.5) 13.2 (3) 15.4 (3.5) 17.6 (4) 19 (4.5) Water flow rate (GPM [m /h]) PWFY-24 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)

  • Page 25: Optional Parts

    (D) Fix power source wiring to terminal bed box by using buffer bushing for tensile force. (Conduit or the like.) Connect transmission wiring to transmission terminal bed through the knockout hole of terminal bed box using ordinary bushing. (E) Supplied only with the PWFY-P72NMU-E-AU. Install them at the strainer inlet. PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-25...

  • Page 26: System Design

    Compressor Model Voltage Max. Volts RLA(A) MCA(A) SC(A) range Fuse(A) PWFY-P36NMU-E-BU 60Hz 208/230V 188 to 253V 12.30/11.12 1.25 Unit Model Voltage Max. Volts RLA(A) MCA(A) range Fuse(A) PWFY-P36NMU-E-AU 60Hz 208/230V 188 to 253V 0.072/0.065 0.09 PWFY-P72NMU-E-AU PWFY-26 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)

  • Page 27: M-Net Control

    11-2-2. Address Setting Switch Operation Operate with the main power turned OFF SWU2 SWU1 SWU3 • There are two types of rotary switch setting available: setting addresses 1 to 9 and over 10, and setting branch numbers. How to set addresses Example: If Address is “3”, remain SWU2 (for over 10) at “0”, and match SWU1 (for 1 to 9) with “3”. How to set branch numbers SWU3 (Series R2 only) Match the indoor unit’s refrigerant pipe with the BC controller’s end connection number. Remain other than R2 at “0”. • The rotary switches are all set to “0” when shipped from the factory. These switches can be used to set unit addresses and branch numbers at will. PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-27...
  • Page 28 Note2: Outdoor units OC and OS in one refrigerant circuit system are automatically detected. OC and OS are ranked in descending order of capacity. If units are the same capacity, they are ranked in ascending order of their address. PWFY-28 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)
  • Page 29 5. Assign an address to each of the sub BC controllers (SC1 and SC2) which equals the sum of the smallest address of the indoor units that are connected to each sub BC controller and 50. PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-29...
  • Page 30 2. Address should be set to Indoor units, LOSSNAY and central controller. 3. M-NET power is supplied by the Outdoor unit at TB3, while Indoor unit and MA consume the M-NET power for transmission use. For details, refer to "System configuration restrictions". PWFY-30 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)
  • Page 31 Note: Dip S/W 1-1 OFF: Water Inlet Temp. Dip S/W 1-1 ON : Water Outlet Temp. The factory setting for Dip SW 1-1 is OFF. Signal priority = External input > centralized controller > remote controller PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-31...

  • Page 32: Installation

    Be sure to install the unit in a location which can adequately support its weight. If there is insufficient strength to support the unit’s weight, it could fall and cause injuries. Combining indoor units with BC controllers and outdoor units For combining indoor units with BC controllers and outdoor units, refer to section BC controllers and outdoor units installation manual. PWFY-32 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)
  • Page 33 The conversion of M BTU to BTU x 1,000 / C. Total (A+B) Total Heating Capacity x (100% x (100% %) = D. No. of units required Safety factor; x (100% %) / 39900BTU = units units are required PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-33...
  • Page 34 Follow customer’s specifications, if applicable. Refrigerant Piping, Drain Pipe, and Filling Port (A) Refrigerant piping (gas) (B) Refrigerant piping (liquid) (C) Water inlet (D) Water outlet (E) Drain outlet *1: PWFY-P36, 72NMU-E-AU (5-9/32) (4-1/2) 184 (7-1/4) 206 (8-1/8)*1 PWFY-34 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)
  • Page 35 10) Cold/Hot water pipe Use pipes that allow for easy air purging, and provide sufficient insulation. 11) Drain valve Install drain valves so that water can be drained for servicing. 12) Strainer Install a strainer near the PWFY unit to keep foreign materials from entering the water-side heat exchanger. PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-35...
  • Page 36 Be sure to interlock unit operation and the water-circuit pump. Use the terminal blocks for interlocking TB142A (IN1) that can be found on the unit. TB142A Control Box Operation signal Pump interlock Broken lines are field supply products. Strainer Water Pump Pump Interlock Example Diagram PWFY-36 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)
  • Page 37 Corrosion can occur in cold-water systems even if there has been no prior signs of corrosion. If the water quality level has dropped, please adjust water quality sufficiently before replacing the unit. Do not exceed the maximum of 100L circulating water in the water pipe. PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010) PWFY-37...
  • Page 38 PWFY-38 PWFY-P-NMU-E-BU/PWFY-P-NMU-E-AU (Sept. 2010)

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