Haier MRV SII AU042FNEUA Service Manual
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Haier MRV SII AU042FNEUA Service Manual

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MRV SII
Service Manual
SYJS-02-2021 REV.A
Edition: 2021-02

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Summary of Contents for Haier MRV SII AU042FNEUA

  • Page 1 MRV SII Service Manual SYJS-02-2021 REV.A Edition: 2021-02...

  • Page 2: Table Of Contents

    CONTENTS 1. General Information ...............................1 2. Specification ................................4 3. Dimension ................................8 4. Function Parts layout ............................9 5. Center of gravity ..............................10 6. Refrigerant Circuit ............................... 11 7. Wiring Diagram ..............................13 8. Performance Curves ............................15 9. Selection Procedure ............................19 10. Operation Range ...............................20 11.

  • Page 3: General Information

    1. General Information 1.1 Indoor units 4-WAY CASSETTE TYPE/PB-700lB ROUND-WAY SMART AIR FLOW CASSETTE/ PB- AB052MCERA 950KB AB072MCERA AB072MRERA AB092MCERA AB092MRERA AB122MCERA AB122MRERA AB162MCERA AB162MRERA AB182MCERA(C) AB182MRERA 4-WAY CASSETTE TYPE/PB-950JB AB242MRERA AB282MRERA AB182MCERA AB242MCERA AB282MCERA AB302MRERA AB382MRERA AB302MCERA AB482MRERA AB382MCERA AB482MCERA AB602MRERA MINI 4-WAY CASSETTE TYPE/PB-620KB...
  • Page 4 MED ESP DUCT TYPE (80/120Pa) MED ESP DUCT TYPE (50/96Pa) AD182MZERA AD182MMERA AD242MZERA AD242MMERA AD282MZERA AD282MMERA AD302MNERA AD302MMERA AD382MNERA AD382MMERA AD482MNERA AD482MMERA MED ESP DUCT TYPE (50/100Pa) CONSTANT AIR VOLUME DUCT TYPE AD052MJERA AD072MQERA AD072MJERA AD092MQERA AD092MJERA AD122MQERA AD122MJERA AD152MQERA AD162MJERA AD182MQERA AD182MJERA...
  • Page 5 N HIGH WALL AS052MNERA AS052MFERA AS072MNERA AS072MFERA AS092MNERA AS092MFERA AS122MNERA AS122MFERA AS162MNERA AS162MFERA AS182MNERA AS182MFERA AS242MNERA AS242MFERA AS282MNERA AS302MNERA CONSOLE NEW CONSOLE AF052MAERA AF052MBERA AF072MAERA AF072MBERA AF092MAERA AF092MBERA AF122MAERA AF122MBERA AF182MAERA AF182MBERA (New) CONVERTlBLE TYPE AC092MDERA AC282MDERA AC122MDERA AC302MDERA AC162MDERA AC382MDERA AC182MDERA AC482MDERA...

  • Page 6: Specification

    2. Specification Model AU042FNERA Power supply Ph/V/Hz 1/220~240/50/60 Rated capacity 12.10 Rated capacity kBtu/h 41.3 Rated power input 4.25 Cooling Max. power input 2.85 Rated current 20.3 Max. current 28.3 Rated capacity 12.10 Rated capacity kBtu/h 41.3 Rated power input 4.10 Heating Max.
  • Page 7 Model AU042FNERA Number of rows Tube pitch(a)x row pitch(b) 21*18.186 Fin spacing Fin type (code) Corrugated Fin Coating Type optional Hydrophilic aluminum Outdoor coil Salt Spray Test Duration Hour Tube outside dia.and type Internal thread copper tube Ф7 Coil length x height 1005*924 Number of circuits Coating type...
  • Page 8 Model AU052FNERA Power supply Ph/V/Hz 1/220~240/50/60 Rated capacity 14.00 Rated capacity kBtu/h 47.8 Rated power input 5.00 Cooling Max. power input 2.80 Rated current 23.9 Max. current 29.3 Rated capacity 14.00 Rated capacity kBtu/h 47.8 Rated power input 4.83 Heating Max.
  • Page 9 Model AU052FNERA Number of rows Tube pitch(a)x row pitch(b) 21*18.186 Fin spacing Fin type (code) Corrugated Fin Coating Type optional Hydrophilic aluminum Outdoor coil Salt Spray Test Duration Hour Tube outside dia.and type Internal thread copper tube Ф7 Coil length x height 1005*924 Number of circuits Coating type...

  • Page 10: Dimension

    3. Dimension AU042FNEUA AU052FNEUA...

  • Page 11: Function Parts Layout

    4. Function Parts layout AU042FNEUA AU052FNEUA...

  • Page 12: Center Of Gravity

    5. Center of gravity...

  • Page 13: Refrigerant Circuit

    6. Refrigerant Circuit...
  • Page 14 Part name Sign Function Date Note Capacity control, meet indoor load request by adjusting frequency and Compressor 20°C opening and closing fixing frequency compressor. High pressure protection 4.15Mpa, OFF Pressure switch In cooling, compressor frequency adjustment and protection control for 0~1.7MPa abnormal pressure.

  • Page 15: Wiring Diagram

    7. Wiring Diagram 0150541652 【Wiring Diagram】 LPS TD TE(1) TC TS TA CN12 CN13 ACL’ 6.3A 250VAC FUSE1 CN2 CN3 CN4 CN5 CN6 CN7 CN29 CN28 CN30 blue white blue whit blue black yellow ACN’ CN19 CN21 frequency conversion board green CN18 white...
  • Page 16 【 Dial Code Description 】 Dial Model 0 represent OFF 1 represent ON - represent need to be setting when installing 【Symbol Description】 SYMBOL Description SYMBOL Description Live line High pressure switch Neutral line Low pressure switch HEATER Compressor heating belt Exhaust temperature sensor Unloading solenoid valve TE(1)

  • Page 17: Performance Curves

    8. Performance Curves (1) Calculation method of cooling capacity ----cooling capacity to be known = cooling capacity*(A*B*C*D*E) W A. Capacity compensation value of indoor B. Capacity compensation value of outdoor air wet-bulb temperature condition air dry-bulb temperature condition 40 43 Outdoor air dry-bulb temperature (°C ) Indoor air wet-bulb temperature (°C ) D.
  • Page 18 Notes for E: (1) The main pipe (from outdoor to the first branch pipe) diameter should be enlarged one size when the single way pipe length is over 90m. (2) When in cooling mode, outdoor is lower than indoor; or when in heating mode, outdoor is higher than indoor, the compensation factor should be decreased the below value from figure E.
  • Page 19 E. Capacity compensation value of pipe length, pipe diameter and height drop F. Capacity compensation value for defrost capability of outdoor heat exchanger Outdoor air wet-bulb temperature (°C) Notes for E: (1) The main pipe (from outdoor to the first branch pipe) diameter should be enlarged one size when the single way pipe length is over 90m.
  • Page 20 (1) Correction factor for pipe length and drop. In cooling Single pipe length from the farthest outdoor unit to the farthest indoor unit(m) Drop 0.000 0.000 0.000 0.920 0.890 0.872 0.861 0.840 0.000 0.000 0.947 0.920 0.890 0.872 0.861 0.840 0.000 0.980 0.947...

  • Page 21: Selection Procedure

    9. Selection Procedure Calculate each indoor load separately Select the indoor units that matches the indoor load Perform temperature correction to calculate the actual capacity Reselect the of the indoor unit indoor units Select the outdoor units Indoor actual capacity indoor load ≥...

  • Page 22: Operation Range

    10. Operation Range...

  • Page 23: Noise Level

    11. Noise Level (1) Testing illustration Front (2) Testing condition: a. Unit running in the nominal condition b. Test in the semi-anechoic chamber c. Noise level varies from the actual factors such as room structure, etc. (3) Octave band level AU052FNERA AU042FNERA Octave band center frequency Hz...

  • Page 24: Outdoor Installation

    12. Outdoor Installation 12.1 Safety The outdoor uint adopts "simultaneous control" type, all indoors should be heating or cooling simultaneously. To protect compressor, before startup, the unit should be electrified for over 12 hours. If the unit is not used for a long time, please cut off the power to save energy, or the unit will consume the power.
  • Page 25 • For the liquid pipe and the gas pipe, take measures for heat insulation too. If there is no heat insulation, the dew drop will wet the things. • If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.

  • Page 26: Installation Instruction

    12.2 Installation instruction In installation, please check specially the below items: • If the connected units quantity and the total capacity is in the allowable range? • If the refrigerant pipe length is in the limited range? • If the pipe size is proper? And if the pipe is installed horizontally? •...
  • Page 27 The unit should be installed at the ■ The place where the water can flow ■ The unit is better not be installed place where the cold/hot air or fluently. at the below places, or it will cause noise will not interfere the neighbours. ■...
  • Page 28 CAUTION ■ In the installation and commissioning, the outdoor machine do not put any irrelevant material, to ensure that there is no debris inside the machine, or there may be a fire or accident. Pay attention to the following points when handling the equipment manually: 1.
  • Page 29 Outdoor Installation Installation location Note: 1. In snowy area, install the unit under the bracket or the snow-proof cover against the accumulative snow on the unit. 2. Do not install the unit at the place where the flammable gas will leak. 3.
  • Page 30 (3) Multi-unit installation in front and back (unit: in.(mm)) The top and two side surfaces must be exposed to open space, and barriers on at least one side of the front and back shall be lower than the outdoor unit. ■...
  • Page 31 19.05 is 0-type, the pressure preservation will be bad, thus it must be 1/2H type and over the min. thickness. 3. The branch pipe must be from Haier. 4. When installing the stop valve, refer to the relative operation instruction.
  • Page 32 Drain pipe disposal ■ Make sure the drain works properly. ■ In regions where buildups of snow can be expected, the accumulation and freezing of snow in the space between the heat exchanger and external plate may lower operating efficiency. ■...
  • Page 33 Piping connection method: gas pipes liquid pipes Enlarged diagram A, B, C, D:Copper pipe hole E:Power cord hole (with its own cable sheath) F:Communication line hole As shown in the figure, the piping can be connected from four directions. Through the front / rear hole piping piping the cover hole or crack directly across the floor.
  • Page 34 Long pipe and high drop 1. Allowable pipe length and height difference Outdoor unit First branch piping Indoor unit Length of the longest piping L Length of the longest piping after the h≤10m first branch piping L(*) Maximal length and drop height permissible of refrigerant piping Permissible Piping part value...
  • Page 35 Note: 1. When connecting the pipe and the outdoor, please pay attention to the outdoor pipe dimension. 2. When adjusting the diameter among pipes and among the units, please must execute at the branch pipe side. 3. When welding with hard solder, please must blow nitrogen. If not, a number of oxide will be produced and cause heavy damage.Besides,to prevent water and dust into the pipe, please make the brim as outer roll.
  • Page 36 ■ Weld the pipe at the same time charge the nitrogen. Or it will cause a number Seal the pipe end with of impurity (a film of oxidation) to clog the capillary and the expansion valve, adhesive tape or the stopper further cause the deadly failure.
  • Page 37 Because the unit is with refrigerant R410A, the below issues should be paid attention: ■ To prevent the different oil into the pipe, please use the special tool for R410A, especially for gauge manifold and charging hose. ■ To prevent the compressor oil into the refrigerant cycle, please use the anti-counter-flow adapter. (8) Check vale operation Open/close method: ■...
  • Page 38 Inspect WARNING ■ Switch off the main power switch of the indoor ■ To ensure that the electrical equipment used on the and outdoor machine for more than 1 minutes installation site (main power switch, circuit breaker, wire, before the wiring or regular inspection. conduit and wiring terminals, etc.) have been selected ■...
  • Page 39 The outdoor and all indoor units are in parallel through 2 non-polar wires. Three wiring methods between wired controller and indoor unit: A. 1 to multi (group control): one wired controller controls 2~16 indoors, as shown in above figure, indoor 1~indoor 2: indoor 2 is wired control master unit, the others are wired control slave units.
  • Page 40 ■ When power cable exceeds the range, thichen it appropriately. ■ The appliance shall be installed in accordance with national wiring regulations. ■ All wiring must be performed by an authorized electrician. ■ Be sure to install an earth leakage circuit breaker in accordance with applicable legislation.Failure to do so many cause electrical shock.

  • Page 41: Pcb Photo

    13. PCB Photo LED4，LED2 LED3 LED10 LED1...

  • Page 42: Dip Switch Setting

    14. Dip Switch Setting (1) BM1 introduction Definition Introduction Begin to search indoor (DEFAULT) Indoor searching after BM1_1 startup Stop searching indoor and lock the quantity Select by model (DEFAULT) Fan motor quantity BM1_2 selection Forced single fan (only 80/112/125/140/160 model use) AC (DEFAULT) BM1_3 Fan motor selection...
  • Page 43 Definition Introduction Heat pump (default) Cooling only or heat pump BM2-1 selection Cooling only BM2_2 BM2_3 Outdoor model selection BM2_4 Single phase (DEFAULT) BM2-5 Power supply selection 3-phase New communication protocol (DEFAULT) BM2-6 Communication protocol selection Old communication protocol BM2-7 BM2-8 Start mode selection First on indoor unit priority (DEFAULT)

  • Page 44: Monitor Tools

    15. Monitor Tools Main function instruction: By setting the rotary switch, the digital tube will display the outdoor and indoor unit parameters (the outdoor current, discharge temp., suction temp., defrosting temp., coil temp. and outdoor ambient temp.; indoor unit coil temp. and valve open angle and so on), the data is inform of decimal integer.
  • Page 45 SW01 SW02 Digital tube display Td: exhaust gas sensor (unit: Celsius) Ta: ring temperature sensor (unit: Celsius) Ts: suction sensor (unit: Celsius) Te: defrost sensor (unit: Celsius) Pd: High pressure pressure (unit: kg) Ps: Low pressure (unit: kg) Outdoor machine PMV opening (unit: pls, maximum display 999) Valve state First bit: 4WV (0- closed, 1- open);...

  • Page 46: Outdoor Unit Control

    16. Outdoor Unit Control 1. Compressor startup control After receiving the outdoor startup instruction, outdoor open SV1 30 seconds and then standby. When startup, the compressor will keep for 3 min at 45rps (when Ta<40°C) or 3 min at 40rps (when Ta>=40°C). In cooling mode, meet running 1min &...
  • Page 47 3. Defrosting control In order to have the effect heating operation, need defrosting control. 3.1 Entering condition: Ta≤20°C ■ & After heating startup 60min ■ OR Last defrosting~ heating cumulative operation time is more than 60 minutes A: Ta≥6°C, Te≤-10°C For 5min continuously ■...
  • Page 48 B: In heating mode When load rate<25%: after 1 hours, 4-way valve doesn't reversing oil return operation 25%≤load rate<50%: after 2 hours, 4-way valve The master unit compressor cumulative ■ OR ■ & doesn't reversing oil return operation operation time Load rate≤30% 50%≤load rate<75%: after 4 hours, 4-way valve ■...

  • Page 49: Failure Code

    17. Failure Code Inverter outdoor unit failure code Digital tube indication on Failure code definition Failure description Remarks master unit Defrosting temp.sensor Te AD value is below 11(open circuit) or over 1012(short failure circuit) for 60seconds, in cooling mode, if the sensor Resumable is abnormal, the unit does not deal with it, besides, in Defrosting temp.sensor Tc...
  • Page 50 Digital tube indication on Failure code definition Failure description Remarks master unit 3 times in an hour, confirm CT current is too low or 3 minutes after recovery failure; once current sensor fault confirmation, un-resumable Cannot receive valve plate module signal in 200 Valve plate module continuous rounds or receive wrong data,recover Resumable...
  • Page 51 Digital tube indication on Failure code definition Failure description Remarks master unit Transient over current in IPM Transient over current in IPM module rectifier side module rectifier side software software Current detection circuit Current detection circuit abnormality abnormality 3 times in an IPM modular over current, in short circuit, over heat, IPM modular protection (F0) hour, confirm...

  • Page 52: Troubleshooting

    18. Troubleshooting [20~24] Temperature sensor failure ensor terminal is fixed well Reconnect If sensor resistor Replace sensor /characteristic is proper Check if PCB is faulty, if yes, replace it [28, 29] High/low pressure sensor failure If sensor terminal is fixed well Reconnect If voltage between red terminal and black terminal is 5V when...
  • Page 53 [26-0, 26-1, 26-2] Communication circuit between indoor and outdoor If wiring between P and Q Modify the communication wire is wrong or broken down If wire of CN29 on outdoor Modify the port connecting board is normal If wire of CN15 outdoor connecting board is normal If indoor and outdoor are Connect power source...
  • Page 54 [33] Outdoor EEPROM failure Reconnect If the EEPROM is fixed well Replace EEPROM [35] 4-way valve reversing failure If connection between 4-way valve Re-connect and connecting board is good If system meets condition of 4-way valve reversing: Check if SV1 leaks Pd-Ps>0.6MPa Measure if CN49 voltage on connecting board is...
  • Page 55 [30] High pressure switch shutoff failure 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 Make pressure switch terminal...
  • Page 56 [36] Protection of oil temperature too low If Toil is fixes well and if Fix again or replace the sensor its characteristic is correct If the terminal of LEVb is fixed well Reconnect In cooling mode, when the Replace or adjustment indoor unit off if the EEV the indoor unit EEV can't completely close...
  • Page 57 [39-0, 39-1] Low pressure too low and compression ratio too high If actual pressure is in conformance with the Replace pressure sensor measured data by sensor Check if stop valve Open stop valve is open fully Check if system is Recharge refrigerant lack of refrigerant Check if terminal of...
  • Page 58 [40] High pressure protection If characteristic of high pressure Replace pressure sensor sensors are normal If stop valve Open stop valve opens fully If in cooling Check fan motor outdoor fan motor runs normally If in heating indoor fan Check indoor motor runs normally and if filter is clogged Check if piping...
  • Page 59 [43] Discharging temp. sensor Td too low protection If the sensor characteristic Replace the sensor is correct If the teminal of sensor Reconnect is fixed well In cooling mode, when the Replace of adjustment the indoor unit off if the EEV can't indoor unit EEV completely close Check if refrigerant...
  • Page 60 [49] Low pressure switch failure If connection between pressure Re-connect switch and connecting board is good If the system pressure meets the If the system lack of refrigerant condition that pressure switch shuts off Recharge the refrigerant Make pressure switch terminal Replace connecting board on connecting board in short circuit, check if failure exists still...
  • Page 61 [64] CT over current Check if wire between connecting board and module Re-connect is connected normally Check if CT wire is conductive Replace wire If normal after If temperature on top of fixed If AC contactor replacing CT work fixed frequency compressor detector is too high Replace PCB...
  • Page 62 [71] DC motor blocked Rotate fan motor by Replace fan motor hand to check if there is obviously fiction Check the motor and Re-connect PCB connection is well Forced the fan in low speed, measure if it has alternating Replace the motor voltage between FG and GND Replace the outdoor PCB...
  • Page 63 [75] No pressure drop between high pressure and low one Check if high/low pressure Re-connect sensor is connected well Check if compressor wire is Correct compressor wire connect normally If wires of inverter compressor Correct compressor wire are connected oppositely Replace 4-way valve If 4-way valve is interconnected Measure if there is voltage U, V, W...
  • Page 64 [82] Compressor current protection [108] Transient over current in IPM module rectifier side software [109 Current detection circuit abnormality [123] Transient over current in IPM module rectifier side hardware Check if the wires of the Reconnect or change the wires compressor connect well Measured the compressor winding Change the compressor...
  • Page 65 [110] Power module overcurrent Improve power supply Check if voltage of power supply is circuit normal Check if wire of electric box Correct the wiring due to is correct, and if compressor diagram wire is fixed well If power module is Replace power module normal If compressor is normal...
  • Page 66 [111] Compressor out of control Check if voltage of power supply is normal Improve power supply circuit Check the wires among U, V, Replace the wires W of compressor are normal If compressor is normal Replace the compressor (compressor coil resistor, insulation) Compressor load too much, check the reason [81] IPM modular temp.
  • Page 67 [113] Protection of overload Improve power supply circuit Check if voltage of power supply is normal Check if wire of electric box is correct Correct the wiring due to diagaram If compressor is normal (compressor Replace compressor coil resistor, insulation) If power module is normal Replace power module Compress load too much, check...
  • Page 68 [115] Voltage too high of DC bus line of transducer Check if voltage of power Improve power supply circuit supply is normal Check if wire of electric box is correct Correct the wiring due to diagram Measure if DC bus line Circuit of DC bus line voltage on voltage between P and N of inverter control board abnormal,...
  • Page 69 [117] Transducer over current (software protection) Check voltage of power supply is normal Improve power supply circuit Check if wire of electric box is correct Correct the wiring due to diagram If compressor is normal Replace compressor (compressor coil resistor, insulation) If power module is normal Replace power module Compressor load too much,...
  • Page 70 [119] Current detecting circuit abnormal of transducer Check if wire between DCCT and control board wire between IPM and compressor are correct; if Correct the wiring due to diagram wiring direction of DCCT is normal Check if current sensor is Replace current sensor normal Replace inverter PCB...
  • Page 71 [120] Power supply of transducer abnormal Improve power supply circuit Check if voltage of power supply is normal Check if wire of electric box is correct Correct the wiring due to diagram Adjust or replace relay If relay or AC contactor acts well or AC contactor Measure if DC bus line DC bus line voltage circuit on...
  • Page 72 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 73 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 74 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 75 (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 76 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 77 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 78 (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 79 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 80 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 81 Enthalpy-humidity chart Vapour partial pressure 0 10 0mmHg Humidity d. g/kg Dry air k∫ /kg kcal /kg °C °C °C °C Wet air enthalpy-humidity chart 1000 1013.25mbar Atmospheric pressure (10Pa) 760mmHg =1.01t+0.001d (2500+1.84t)k∫/kg dry =1.24t+0.001d (597.3+0.44t)kcal/kg dry air...
  • Page 82 Haier Commercial Air Condition Web: Http://www.haier.com Haier reserves the right to make change without any notice.

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