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Mitsubishi Electric PEH-P8YE Technical & Service Manual

Air-cooled heat pump type packaged air conditioners, indoor unit
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AIR-COOLED HEAT PUMP TYPE
PACKAGED AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
<Indoor unit>
Models
PEH-P8YE, PEH-P10YE
For use with the R407C
2000

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  Summary of Contents for Mitsubishi Electric PEH-P8YE

  • Page 1 2000 AIR-COOLED HEAT PUMP TYPE PACKAGED AIR CONDITIONERS TECHNICAL & SERVICE MANUAL <Indoor unit> Models PEH-P8YE, PEH-P10YE For use with the R407C...
  • Page 2: Table Of Contents

    Contents Page 1 1 1 1 1 PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT ........1 [1] Storage of Piping Material ....................2 [2] Piping Machining ......................... 3 [3] Necessary Apparatus and Materials and Notes on Their Handling ........4 [4] Brazing ..........................
  • Page 3: 1 1 1 1 Precautions For Devices That Use R407C Refrigerant

    1 1 1 1 1 PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT Caution Do not use the existing refrigerant piping. Use a vacuum pump with a reverse flow check valve. • The vacuum pump oil may flow back into the refriger- •...
  • Page 4: Storage Of Piping Material

    [1] Storage of Piping Material (1) Storage location Store the pipes to be used indoors. (Warehouse at site or owner’s warehouse) Storing them outdoors may cause dirt, waste, or water to infiltrate. (2) Pipe sealing before storage Both ends of the pipes should be sealed until immediately before brazing. Wrap elbows and T’s in plastic bags for storage.
  • Page 5: Piping Machining

    [2] Piping Machining Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections. Use only the necessary minimum quantity of oil ! Reason: 1. The refrigerator oil used for the equipment is highly hygroscopic and may introduce water inside. Notes: •...
  • Page 6: Necessary Apparatus And Materials And Notes On Their Handling

    [3] Necessary Apparatus and Materials and Notes on Their Handling The following tools should be marked as dedicated tools for R407C. <<Comparison of apparatus and materials used for R407C and for R22>> Apparatus Used R407C Gauge manifold Evacuating, refrigerant filling Current product Charging hose Operation check...
  • Page 7: Brazing

    [4] Brazing No changes from the conventional method, but special care is required so that foreign matter (ie. oxide scale, water, dirt, etc.) does not enter the refrigerant circuit. Example: Inner state of brazed section When non-oxide brazing was not used When non-oxide brazing was used Items to be strictly observed: 1.
  • Page 8: Airtightness Test

    [5] Airtightness Test No changes from the conventional method. Note that a refrigerant leakage detector for R22 cannot detect R407C leakage. Halide torch R22 leakage detector Items to be strictly observed: 1. Pressurize the equipment with nitrogen up to the design pressure and then judge the equipment’s airtightness, taking temperature variations into account.
  • Page 9: Charging Of Refrigerant

    [7] Charging of Refrigerant R407C must be in a liquid state when charging, because it is a non-azeotropic refrigerant. For a cylinder with a syphon attached For a cylinder without a syphon attached Cylin- Cylin- Cylinder color identification R407C-Gray Charged with liquid refrigerant R410A-Pink Valve Valve...
  • Page 10: 2 2 2 2 Part Names And Functions

    2 2 2 2 2 PART NAMES AND FUNCTIONS Indoor unit Air inlet • Air inlet : Sucks the ambient air in. • Filter : The filter bruit into the unit as standard is a simple filter to remove visible dust and dirt. If Filter air pulification is one of the conditions required for use, consult with your dealer.
  • Page 11 Display In this display example on the bottom left, a CENTRALLY CLOCK display condition where all display lamps light is CONTROLLED display This current time, start time and stop shown for explanation purposes although time can be displayed in ten second This indicates when the unit is controlled intervals by pressing the time switch by optional features such as central con-...
  • Page 12: 3 3 3 3 Specifications

    3 3 3 3 3 SPECIFICATIONS Specifications of air-source heat pump type packaged air conditioner (Ceiling concealed type indoor unit) PEH-P8YE Model name Quantity Symbol Cooling Heating Capacity kcal/h 18,000 19,000 20.9 23.7 27 °C/19 °C 20 °C/– Indoor side...
  • Page 13 Specifications of air-source heat pump type packaged air conditioner (Ceiling concealed type indoor unit) Model name Quantity Symbol PEH-P10YE Cooling Heating Capacity kcal/h 22,400 26,200 26.0 30.5 27 °C/19 °C 20 °C/– Indoor side Dry bulb temperature/wet bulb temperature Air con- dition 35 °C/24 °C 7 °C/ 6 °C...
  • Page 14: 4 4 4 4 Part Names And Functions

    4 4 4 4 4 PART NAMES AND FUNCTIONS (1) Indoor Unit • Models PEH-P8YE/P10YE A→ Note: When connecting duct to the inlet side, remove the air filter attached to the unit body, and mount an air filter onto the inlet duct side separately.
  • Page 15 (2) Remote Controller • Models PAR-S27AA ON/OFF – CENTRALLY CONTROLLED 1Hr. ON OFF ˚C CHECK CLOCK FILTER CHECK MODE TEST RUN ˚C STAND BY NOT AVAILABLE FUNCTION ERROR CODE DEFROST CLOCK ON OFF FILTER CHECK TEMP. TIMER SET TEST RUN REMOTE CONTROLLER PAR-S27AA N OTE...
  • Page 16: 5 5 5 5 Electrical Wiring Diagram

    5 5 5 5 5 ELECTRICAL WIRING DIAGRAM (1) Indoor Unit • Models PEH-P8YE/P10YE INDOOR UNIT SYMBOL NAME Fan motor(with inner thermostat) Over current relay (fan motor) Magnetic contactor (fan motor) Inner thermostat Terminal bed (power) Terminal bed (indoor/outdoor connecting line) Terminal bed (remote controller transmission line) Thermistor (room temperature sensor 0 °C/15 kΩ.25 °C/5.4 kΩ)
  • Page 17: 6 6 6 6 Technical Data To Meet Lvd

    6 6 6 6 6 TECHNICAL DATA TO MEET LVD [1] Capacity/Input Ratio against Changes in Room Airflow Rate • Models PEH-P8YE Heating Cooling 1.05 1.05 Input Input Capacity Capacity 0.95 0.95 Airflow rate (m /min) Airflow rate (m /min) •...
  • Page 18: Bypass Factor Curves

    0.20 0.10 0.15 0.05 0.10 0.00 Airflow rate (m /min) Airflow rate (m /min) [3] Cooling Sensible Heating Capacity Table (1) PEH-P8YE (Airflow rate 60m /min) Indoor inlet air temperature (DB/WB°C) Outdoor 23/16 25/18 27/19 28/20 30/22 temp. (°C) 18100...
  • Page 19: Airflow Characteristic Curves

    [4] Airflow Characteristic Curves PEH-P8YE PEH-P10YE Operating airflow range Operating airflow range Airflow rate (m /min) Airflow rate (m /min) [5] Center of Gravity (Indoor unit) • • • • • • • • • • Top of the unit •...
  • Page 20: Nc Curve (Indoor Unit)

    [6] NC Curve (Indoor unit) PEH-P8YE Measurement condition External static pressure: 50Pa External static pressure: 150Pa Aux. duct NC60 NC50 NC40 Measured point NC30 Approximate minimum NC20 audible limit on continuous noise 1000 2000 4000 8000 OCTAVE BAND CENTER FREQUENCIES <Hz>...
  • Page 21: 7 7 7 7 Service Data

    7 7 7 7 7 SERVICE DATA [1] Appearance of Equipment • PEH-P8YE/P10YE Electrical Parts Box (with cover removed) Terminal bed (remote controller transmission line) Magnetic contactor (fan motor) Over current relay (fan motor) Terminal bed Terminal bed (indoor/outdoor (power)
  • Page 22: 8 8 8 8 Function Of Switch On Indoor Circuit Board

    8 8 8 8 8 FUNCTION OF SWITCH ON INDOOR CIRCUIT BOARD [1] DIP SW1 for model Selection (DIP SW1 has been set at factory) PEH-P8YE/P10YE : SW1-1, -4 ON, SW1-2, -3, -5 OFF [2] DIP SW2 for Capacity Setting (DIP SW2 has been set at factory)
  • Page 23: 9 9 9 9 Test Run

    9 9 9 9 9 TEST RUN [1] Before test run s s s s s After installation of indoor and outdoor units, and piping and electric wiring work, re-check that the unit is free from leaks of refrigerant, loosened connections, and incorrect polarity. s s s s s Measure an impedance between the power supply terminal block on the outdoor unit and the ground with a Ω...
  • Page 24 (*1) After turning ON the power, the system will go into startup mode, and the remote controller operation lamp (red) and the room temperature display section’s “H0” will flash. Also, in the case of the indoor substrata LEDs, LED 1 and LED 2 light up (when address is 0) or become dim (when address is not 0), and LED 3 flashes.
  • Page 25: Self-Diagnosis

    2 Test run start and finish • Operation from the indoor unit Execute the test run using the installation manual for the indoor unit. • Operation from the outdoor unit Execute settings for test run start, finish and operation mode (cooling, heating) using the DIP switch SW 4 on the outdoor substrate.
  • Page 26 (3) When the address does not exist 1Hr. ON OFF ˚C CHECK CLOCK FILTER ˚C CHECK MODE STAND BY INDOOR UNIT ERROR CODE FUNCTION DEFROST ADDRESS NO 4 Reset error history Display the error history at the self-diagnosis result display screen 1Hr.
  • Page 27: Remote Controller Diagnosis

    [4] Remote controller diagnosis If operation cannot be carried out from the remote controller, use this function to diagnose the remote controller. 1 First, check the electricity current marker If the correct voltage (DC 12 V) is not displayed on the remote 1Hr.
  • Page 28 The Air Conditioning & Refrigeration Systems Works acquired ISO 9001 certification under Series 9000 of the International Standard Organization (ISO) based on a review of quality warranties for the production of refrigeration and air conditioning equipment. ISO Authorization System The ISO 9000 series is a plant authorization system relating to quality warranties as stipu- lated by the ISO.

This manual is also suitable for:

Peh-p10ye