Haier AU482FIERA Installation & Maintenance Instructions Manual
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Haier AU482FIERA Installation & Maintenance Instructions Manual

R410a heat pump mrviii-s (g)
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See also: Installation Manual
R410A HEAT PUMP
MRVIII-S (G)
Design, Installation &
Maintenance instruction
AU282FHERA
AU482FIERA (G)
AU48NFIERA (G)
AU60NFIERA (G)
SYJS-11-2015REV.D
Edition: 11-2015

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  • Page 1 R410A HEAT PUMP MRVIII-S (G) Design, Installation & Maintenance instruction AU282FHERA AU482FIERA (G) AU48NFIERA (G) AU60NFIERA (G) SYJS-11-2015REV.D Edition: 11-2015...

  • Page 2: Table Of Contents

    CONTENTS 1. General Information ........................1 2. Specification ..........................2 3. Indoor Model List ........................6 4. Refrigerant Circuit........................7 5. Dimension..........................10 6. Wiring Diagram ........................12 7. Performance Curves....................... 15 8. Outdoor Installation ........................ 18 9. Electric Installation........................29 10.

  • Page 3: General Information

    1. General Information MRVllI-S adopts refrigerant R410a, which is the new generation of H-MRV. It is with DC inverter technology, high efficiency and energy saving, intelligent control, etc. All indoor units are with EEV to adjust the refrigerant flow, collect the data by the precise temp. sensor. lndoors adopt the indoors of MRVllI-C below 48000BTU/h, add the central control, room card function on the basis of original H-MRV.

  • Page 4: Specification

    2. Specification Model AU282FHERA AU482FIERA (G) Power supply Ph/V/Hz 1/220~230/50 1/220~230/50/60 Rated capacity Rated capacity kBtu/h 27.3 51.2 Rated power input Cooling Max. power input 3.64 3.57 Rated current 10.5 21.2 Max. current 20.7 31.3 Rated capacity Rated capacity kBtu/h 32.4...
  • Page 5 Model AU282FHERA AU482FIERA (G) Number of rows Tube pitch (a)×row pitch (b) 19.05×22 19.05×22 Fin spacing 1.70 HYDROPHILIC HYDROPHILIC Fin type (code) ALUMINIUM ALUMINIUM Fin coating type Optional Clear lacquer Clear lacquer Outdoor coil Salt spray test duration Hour INNERGROOVE TUBE INNERGROOVE TUBE Tube outside dia.
  • Page 6 Model AU48NFIERA (G) AU60NFIERA (G) Power supply Ph/V/Hz 3/380~400/50/60 3/380~400/50/60 Rated capacity Rated capacity kBtu/h 51.2 61.4 Rated power input Cooling Max. power input 3.57 3.27 Rated current Max. current Rated capacity Rated capacity kBtu/h 68.2 Rated power input 5.25 Heating Max.
  • Page 7 Model AU48NFIERA (G) AU60NFIERA (G) Number of rows Tube pitch (a)×row pitch (b) 19.05×22 19.05×22 Fin spacing HYDROPHILIC HYDROPHILIC Fin type (code) ALUMINIUM ALUMINIUM Fin coating type Optional Clear lacquer Clear lacquer Outdoor coil Salt spray test duration Hour INNERGROOVE TUBE INNERGROOVE TUBE Tube outside dia.

  • Page 8: Indoor Model List

    3. Indoor Model List 4-WAY CASSETTE TYPE/PB-700lB HIGH WALL EEV INSIDE AB092MCERA AS072MGERA AS162MGERA AB122MCERA AS092MGERA AS182MGERA AB162MCERA AS122MGERA AS242MGERA 4-WAY CASSETTE TYPE/PB-950JB MED ESP DUCT TYPE (80/120Pa) AB182MCERA AD182MZERA AB242MCERA AD242MZERA AB282MCERA AD282MZERA AB302MCERA AD302MNERA AB382MCERA AD382MNERA AB482MCERA AD482MNERA LOW ESP DUCT TYPE MED ESP DUCT TYPE (50/96Pa) AD072MLERA...

  • Page 9: Refrigerant Circuit

    4. Refrigerant Circuit AU282FHERA Liquid pipe   Strainer P MV Strainer Strainer   Te S 4-way valve   Strainer Gas pipe   Strainer   Oil segregator Oil return capillary Strainer   Gas-liquid Compressor Segregator Legend   Connected   Disconnected Outdoor unit    Indoor unit...
  • Page 10 AU482FIERA (G), AU48NFIERA (G), AU60NFIERA (G) One-way valve Liquid pipe 室外 HEX T Strainer Strainer PMV Strainer Accumulator Strainer 4-way valve Gas pipe Strainer SV1 Oil segregator Strainer Oil return capillary Compressor Gas-liquid Segregator Legend Connected Disconnected Outdoor Indoor...
  • Page 11 Part name Model Sign Function Date Motor resistance AU282 (at 20°C): 0.88Ω Capacity control, meet indoor load Motor resistance Compressor AU482 request by adjusting the frequency (at 20°C): 0.29Ω Motor resistance AU48/60N (at 20°C): 0.53Ω High pressure protection 4.15Mpa, OFF Pressure switch Low pressure protection 0.05Mpa, OFF...

  • Page 12: Dimension

    5. Dimension AU282FHERA AU482FIERA (G), AU48NFIERA (G), AU60NFIERA (G)
  • Page 13 1. Single unit scenario Back Front Front and profile Obstacles shall be lower than the outdoor unit Over Over When there are obstacles above Front and back Over Over Over The top and two side surfaces must be exposed to open space, and obstacles on at least one side of the front ※...

  • Page 14: Wiring Diagram

    6. Wiring Diagram AU282FHERA...
  • Page 15 AU482FIERA (G) Reactor 1 2 3 6 5 4 3 2 1 6 5 4 3 2 1 1 2 3 4...
  • Page 16 AU48NFIERA (G), AU60NFIERA (G)

  • Page 17: Performance Curves

    7. Performance Curves 7.1 Running range Note : AU282FHERA lowest cooling temperature is 10. 7.2 Calculation method (1) Calculation method of refrigerating capacity---Refrigerating capacity to be known =Refrigerating capacity×(A×B×C×D×E) W...
  • Page 18 unit (2) Calculation method of heating capacity---Heating capacity to be known = Heating capacity×(A×B×C×D×E×F) W (3) Calculation method of refrigerating capacity---Only one indoor unit running Outdoor modified capacity with a single indoor running = outdoor modified capacity * (Outdoor modified capacity: heating or cooling capacity after modify item 1 and 2)
  • Page 19 7.3 Noise level AU282FHERA AU482FIERA(G) NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 NC-20 NC-20 Limit of audible continuous Limit of audible noise continuous noise 1252 50 500 1000 2000 4000 8000 1252 50 500 1000 2000 4000 8000...

  • Page 20: Outdoor Installation

    8. Outdoor Installation 8.1 Installation cautions SAFETY PRECAUTIONS ■ Please read these "Safety Precautions" firstly then accurately execute the installation work. ■ Though the precautionary points indicated herein are divided under two headings, "WARNING" and "CAUTION", those points which are related to the strong possibility of an installation done in error resulting in death or serious injury are listed in the "WARNING"...

  • Page 21: Refrigerant Piping

    CATUION ■ Execute proper grounding. Do not connect the ground wire to a gas pipe, water pipe, lightening rod or a telephone ground wire. ■ Improper placement of ground wires can result in electric shock. ■ The installation of an earth leakage breaker is necessary depending on the established location of the unit. ■...
  • Page 22 c. Pipe "c" diameter (main pipe, between outdoor gather pipe and the first branch pipe) Gas pipe side Liquid pipe side Model Diameter Connecting method Diameter Connecting method AU282FHERA φ15.88 φ9.52 AU482/NFIERA (G) φ19.05 Flared joint φ9.52 Flared joint AU60NFIERA (G) φ19.05 φ9.52 d.
  • Page 23 8.3 Allowable pipe length and drop Indoor unit Length of the longest after the Model Allowable value Piping part AU282 Total length of piping (actual length) L1+L2+L3+L4+a+b+c+d+e AU48~60 100m AU282 Piping Longest piping L Actual length L1+L2+L3+L4+e AU48~60 length AU282 Max.
  • Page 24 8.4 Branch pipe dimension unit: mm; ID: inner diameter; OD: outer diameter Side Gas side Changing pipe Branch pipe selection: Note: 1. When connecting the pipe and the outdoor, please pay Total indoor capacity (100W) Model (optional) attention to the outdoor pipe dimension. Less than 335 FQG-B335A 2.

  • Page 25: Piping Installation

    8.5 Piping installation Important ■ Please don't let the pipe and the parts in the unit collide each other. When connecting the pipes, close the valves fully. ■ Protect the pipe end against the water, impurity into the pipes (welding after being flat, or being sealed with adhesive tape).
  • Page 26 ■ The refrigerant pipe should be clean. The nitrogen should flow under the pressure of about 0.5Mpa and when charging the nitrogen, stop up the end of the pipe by hand to enhance the pressure in the pipe, then loose the hand (meanwhile stop up the other end).

  • Page 27: Continuous

    8.7 Evacuation Evacuate at the check valve of liquid stop valve and both sides of the gas stop valve. Operation procedure: After reaching -100.7KPa or Leave it for over 1 less (below -755mmHg), let hour, vacuum pointer the vacuum pump running does not arise.

  • Page 28: Additional Refrigerant Charging

    Additional refrigerant charging per meter (kg/m) Charge when out of factory Model φ22.22 φ19.05 φ15.88 φ12.7 φ9.52 φ6.35 AU282FHERA 2.6kg AU482FIERA (G) 0.35 0.25 0.17 0.11 0.054 0.022 3.6kg AU48/60NFIERA (G) 4.0kg Refrigerant charging amount when out of factory excludes that in the distributing pipe.
  • Page 29 8.9 Utilized tool comparison for MRVIII R22 and R410A TOOL PURPO8E R410A REA8ON Knife Cut the pipe Ο Ο Expander Enlarge the pipe Ο Χ For R410A, must enlarge the projecting pipe. Spanner Fasten the flare nut Ο Χ Standard torque of 1/2, 5/8 pipe is larger. Flare tool Flare the pipe Ο...

  • Page 30: Noise

    8.10 Trial operation 8.10.1. Before trial running Make sure the following works have been finished according to the installation manual. a. Piping work b. Wiring work c. Leakage check d. Evacuate work e. Additional refrigerant charging f. Also check if the indoor works have been finished Note: Recommend that the unit has been electrified for 12 hours for compressor protection.

  • Page 31: Electric Installation

    9.1 Wiring system (1) Power wiring figure Outdoor Outdoor Outdoor AU48~60NFIERA(G) AU282FHERA AU482FIERA(G) Leakage breaker Leakage breaker Leakage breaker over current breaker over current breaker over current breaker Power source: 3N~, 380-400V, 50/60HzP ower source: 1N~, 220-230V, 50Hz Power source: 1PH, 220-230V~, 50/60Hz...
  • Page 32 (mA) Section Model Screw Response time (S) AU282FHERA 1PH,220-230V,50Hz 30A 30mA below 0.1S AU482FIERA (G) 1PH,220-230V,50/60Hz 50A 30mA below 0.1S AU48NFIERA (G) 20A 30mA below 0.1S 3N~,380-400V,50/60Hz AU60NFIERA (G) 20A 30mA below 0.1S a. Power cable must be fixed firmly.
  • Page 33 LED3: Power indicator light (It is light when power on and extinguishes when power off) (2) SW01 definition SW01 Function definition LED2 definition Model selection dip switch AU482FIERA (G) LED2 flicker 4 times by 1Hz AU48NFIERA (G) LED2 flicker 5 times by 1Hz AU60NFIERA (G) LED2 flicker 6 times by 1Hz...
  • Page 34 (3) Function explanation of switch SW01, SW02. We can know the number of some parameters by using testing device, but must to connect the testing device. Which is not in the control board. The testing device must be bought from manufacturer. SW01 SW02 Display of numeral pipe light with seven segments Error code of outdoor unit display, "--"...
  • Page 35 SW01 SW02 Display of numeral pipe light with seven segments No used Error view (previous 3 error code displayed; quit this condition automatically in 2 min; check the last/next error code with UP/DOWN button. This error code list cannot be cleared. The earliest error code is blushed off after the new one is saved.)(New function with 0151800123A PCB) 4-15 No used...

  • Page 36: Trial Operation And The Performance

    10. Trial Operation and The Performance 3-minute delay function If starting up the unit after being powered off, the compressor will run about 3 minutes later against being damaged. Cooling/heating operation Indoor units can be controlled individually, but cannot run in cool and heat mode at the same time. If the cool mode and the heat mode are existing simultaneously, the unit set latter will be standby, and the unit set earlier will run normally.
  • Page 37 10.1 System marks On the condition that multi MRV II systems are installed, in order to confirm the relationship between outdoor and indoor, please make marks on outdoor electric control box cover to indicate the connected indoor unit. As the below figure: Indoor model: 10.2 Trial operation sequence Indoor confirmation...

  • Page 38: Continuous

    10.3.2 Outdoor unit confirmation Inspection items Results If outdoor unit is in good condition, and if the electric box is fixed firmly. If outdoor wiring is correct. If the wires are broken. If the dip switch of outdoor unit is set correctly. If the outdoor address is correct. The master unit No.

  • Page 39: Trial Operation

    10.4 State setting of trial operation Confirm being electrified Indoor and outdoor are electrified respectively and then check as the following table: Inspection items Results If outdoor PCB is electrified; if the communication indicator flashes. If indoor communication indicator flashes. Check the indoor running parameters are correct after outdoor is connected the testing board and the testing software, such as the sensor characteristic, the EEV open angle, etc.

  • Page 40: Noise

    (3) Cooling operation confirmation Start Once outdoor stops, re-start up Set the mode as COOL: press the button the unit 2 and a half minutes for over 5 seconds at OFF state later Confirm the running state of the If blowing out cold air compressor, indoor EEV If the louver direction If the ventilation is good...

  • Page 41: Noise

    (4) Heating operation confirmation Start Once outdoor stops, re-start up Set the mode as HEAT: press the button the unit 2 and a half minutes for over 5 seconds at OFF state later Confirm the running state of the If blowing out hot air compressor, indoor EEV If the louver direction If the ventilation is good...
  • Page 42 Check indoor power cable If voltage among A, B, If voltage between If voltage between C on wired controller A and B on indoor L and N on indoor If indoor fuse is is AC 14V terminal block is AC terminal block is AC 220V Check the abnormal reason...
  • Page 43 1. Indoor PCB abnormal If voltage among B, If voltage between 2. Wiring of indoor PCB C on wired B and C on indoor If the other indoors If fan motor runs is damaged or the port controller is AC terminal block is begin to run is not inserted well...
  • Page 44 Note 1: Temp. difference between air inlet and air outlet 8tandard A. In cooling mode, after running for at least 30 minutes, it is normal that the temp. difference between air inlet and air outlet is over 10°C, (at max. frequency). B.

  • Page 45: Failure Code

    The nixie light of the outdoor unit control panel displays malfunction code directly when malfunction occurs. (This malfunction table only applies to the follow models referred in this manual.) AU282FHERA, AU482FIERA (G), AU48NFIERA (G), AU60NFIERA (G) malfunction code and malfunction confirming...
  • Page 46 Indication Malfunction on wired Malfunction position code controller Power module overload due to constant high current Over current at steady state (software trip) Over current at deceleration state (software trip) Compressor is not connected Communication loss time out between IPM and control PCB Changeover failure Compressor rotor wrong position compare to the driver Microchip reset...

  • Page 47: Troubleshooting

    12. Troubleshooting [01~05] Temperature senor failure Reconnect If sensor terminal is fixed well If sensor resistor Replace sensor /characteristic is proper Check if PCB is faulty, if yes, replace it [6] Incorrect dip switch setting for model selection on outdoor PCB Check Check if the outdoor dip switch is Reset the dip switch...
  • Page 48 [8] DC motor failure Replace the motor Check if the wiring of the motor is well Measure if the PCB VCC-EARTH voltage Replace PCB is 15V±15%, and 310V-EARTH voltage is 310V±15% Replace the motor solve the fault Replace PCB...
  • Page 49 [9] Alarm and stop when the testing indoor numbers are inconsistent with the initial searched locked numbers which can recoverable Setting the indoor Check if the indoor communication unit address setting address by manual, by manual research indoor unit and lock Check if all the indoor Check indoor and outdoor Replace the shielded...
  • Page 50 [11] Compressor discharging temp. Td protection Reconnect If sensor terminal is fixed well If sensor resistor Replace sensor /characteristic is proper If the system is lack of Charge refrigerant refrigerant Replace connecting board [12] Protecting action of IPM temperature [24] IPM temperature too high Clean the condenser Check if the condenser is blocked...
  • Page 51 [13][14] High/ low pressure switch open circuit If connection between pressure Re-connect switch and connecting board is good If the system pressure meets the Replace pressure switch condition that pressure switch shuts off Make pressure switch close, measure if terminal is conductive by multimeter If the system is clogged Check the piping system...
  • Page 52 [15] Discharge temperature is too low Discharge sensor Reconnect well connected Reconnect of discharge Change sensor sensor is ok? Recharge Refrigerant overcharged? Outdoor PCB is good? Check fan motor, indoor PCB and fan All indoor fans run normally motor wire connection Change indoor TC1 and TC2 is good? Change...
  • Page 53 [16] Suction temp. too high Reconnect If sensor terminal is fixed well If sensor resistor Replace sensor /charactenstic is proper Replace PCB If PCB terminal is well If the system is lack Charge refrigerant and repaired the leakage of refrigerant or leak [17] Capacity overmatch Change indoor total Check if the total indoor...
  • Page 54 [18] Alarm and stop when current exceed the standard value which can recoverable automatically Use the PC-monitor detector and ampere meter to test the current value, whether the difference is within±15% Replace the current transducer [20] Communicating fault of control panel and IPM Check if the communication wiring Reconnect...
  • Page 55 [21] Compressor over current Replace the Check if the wiring compressor wiring of compressor is normal Measure if the Replace compressor compressor short circuit to ground Measure if the Replace compressor phase resistance of compressor is normal Replace inverter module...
  • Page 56 [22] Communicating fault of indoor and outdoor units Check if the communication wiring PQ between indoor and Replace the outdoor units is short communication wiring circuit or short circuit to ground Setting the indoor Check if the indoor communication unit address setting by address by manual manual Replace PCB...
  • Page 57 [23][25][26][27][29][30][31][32][33][35][36][37][38][39][40][41][42][43] Check the wiring connection of the electrical Replace the box according abnormal wiring to the wiring diagram, if loosening, flint, etc. Check if the dip switch Reset the dip switch of outdoor PCB setting is right Change the PCB to search state, and Replace PCB confirm if the outdoor...
  • Page 58 [28] DC bus under voltage Check if the outdoor voltage Check the within ±15% of the power supply standard voltage Check if the PTC wiring connect wrong, if not Check if the PTC relay is replace the PTC relay pull in normally Replace the inverter board...
  • Page 59 [34] Compressor is not connected Check if the wiring Reconnect or replace of compressor the wiring connect right and if fall off or burned Replace the inverter board...

  • Page 60: Appendix

    APPENDIX Sensor characteristic Temp. sensor characteristic No. Sensor type Characteristic Indoor coil/outdoor suction/oil temp./defrost/ambient R (25°C)=10KΩ B (25°C/50°C)=3700K temp. sensor Wired controller ambient temp./indoor ambient temp. R (25°C)=23KΩ B (25°C/50°C)=4200K sensor Outdoor discharging temp. sensor R (80°C)=50KΩ B (25°C/80°C)=4450K Herein, the sensor typical resistor is as follows: (1) R (25°C)=10KΩ...
  • Page 61 R25=10KΩ±3% B25/50=3700K±3% Temp Resistance (KΩ) % (Resist. tol) (°C) Rmax R (t) Normal Rmin MAX (+) MIN (-) 22.54 21.61 20.68 4.31 4.31 21.52 20.65 19.77 4.24 4.24 20.56 19.74 18.92 4.16 4.16 19.65 18.87 18.10 4.09 4.09 18.78 18.05 17.33 4.02 4.02...
  • Page 62 R25=10KΩ±3% B25/50=3700K±3% Temp Resistance (KΩ) % (Resist. tol) (°C) Rmax R (t) Normal Rmin MAX (+) MIN (-) 3.12 2.97 2.83 5.00 5.00 3.02 2.87 2.73 5.06 5.06 2.91 2.77 2.63 5.13 5.13 2.82 2.68 2.54 5.19 5.19 2.72 2.59 2.45 5.25 5.25...
  • Page 63 (2) R (25°C)=23KΩ B (25°C/50°C)=4200K R25=23KΩ±3% B25/50=4200K±3% Temp Resistance (KΩ) % (Resist. tol) °C Rmax R (t) Normal Rmin MAX (+) MIN (-) 538.77 513.12 487.46 5.00 5.00 502.58 478.89 455.21 4.95 4.95 469.29 447.41 425.53 4.89 4.89 438.61 418.38 398.15 4.84 4.84...
  • Page 64 R25=23KΩ±3% B25/50=4200K±3% Temp Resistance (KΩ) % (Resist. tol) °C Rmax R (t) Normal Rmin MAX (+) MIN (-) 32.98 32.22 31.45 2.38 2.38 31.39 30.67 29.96 2.33 2.33 29.87 29.21 28.55 2.27 2.27 28.45 27.83 27.21 2.22 2.22 27.10 26.52 25.95 2.16 2.16...
  • Page 65 R25=23KΩ±3% B25/50=4200K±3% Temp Resistance (KΩ) % (Resist. tol) °C Rmax R (t) Normal Rmin MAX (+) MIN (-) 4.15 3.99 3.84 3.84 3.84 4.00 3.85 3.70 3.88 3.88 3.86 3.71 3.56 3.93 3.93 3.72 3.58 3.44 3.97 3.97 3.59 3.45 3.31 4.01 4.01...
  • Page 66 (3) R (80°C)=50KΩ B (25°C/80°C)=4450K R80=50KΩ±3% B25/80=4450K±3% Temp Resistance (KΩ) % (Resist.tol) °C Rmax R (t) Normal Rmin MAX (+) MIN (-) 1749.01 1921.99 2094.97 9.00 9.00 1651.43 1813.27 1975.10 8.93 8.93 1560.17 1711.65 1863.13 8.85 8.85 1474.74 1616.59 1758.45 8.78 8.78 1394.71...
  • Page 67 R80=50KΩ±3% B25/80=4450K±3% Temp Resistance (KΩ) % (Resist.tol) °C Rmax R (t) Normal Rmin MAX (+) MIN (-) 168.70 178.33 187.96 5.40 5.40 161.74 170.83 179.93 5.33 5.33 155.09 163.68 172.28 5.25 5.25 148.75 156.87 164.98 5.18 5.18 142.70 150.37 158.04 5.10 5.10 136.92...
  • Page 68 R80=50KΩ±3% B25/80=4450K±3% Temp Resistance (KΩ) % (Resist.tol) °C Rmax R (t) Normal Rmin MAX (+) MIN (-) 26.34 27.48 28.61 4.13 4.13 25.45 26.56 27.68 4.20 4.20 24.59 25.69 26.78 4.27 4.27 23.76 24.84 25.91 4.33 4.33 22.97 24.02 25.08 4.40 4.40 22.20...
  • Page 69 Haier Commercial Air Condition Web: Http://www.haier.com Haier reserves the right to make change without any notice.

This manual is also suitable for:

Au282fheraAu48nfieragAu60nfieraAu60nfieragAu482fieragAu48nfiera

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