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Anleitung Zusammenfassung
21 mm slot SG79Y281H07 SPLIT-TYPE AIR CONDITIONERS Models MSZ-A09/A12YV Series MUZ-A09/A12YV(H) [FLARE CONNECTION TYPE] This product is designed and intended for use in the residential, commercial and light-industrial environment. The product at hand is based on the following EU regulations: • Low Voltage Directive 73/23/ EEC • Electromagnetic Compatibility Directive 89/336/ EEC HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN English 7-3 GAS CHARGE 1 Connect gas cylinder to the service port of stop valve (3-way). 2 Execute air purge of the pipe (or hose) coming from refrigerant gas cylinder. 3 Replenish specified amount of the refrigerant, while operating the air conditioner for cooling. Note: In case of adding refrigerant, comply with the quantity specified for the refrigerating cycle. CAUTION • Do not discharge the refrigerant into the atmosphere. Take care not to discharge refrigerant into the atmosphere during installation, reinstallation, or repairs to the refrigerant circuit. • For additional charging, charge the refrigerant from liquid phase of the gas cylinder. If the refrigerant is charged from the gas phase, composition change may occur in the refrigerant inside the cylinder and the outdoor unit. In this case, ability of the refrigerating cycle decreases or normal operation can be impossible. However, charging the liquid refrigerant all at once may cause the compressor to be locked. Thus, charge the refrigerant slowly. To maintain the high pressure of the gas cylinder, warm the gas cylinder with warm water (under 40°C) during cold season. But never use naked fire or steam. Tightening torque N·m kgf·cm Cap for service port 13.7 to 17.7 140 to 180 Cap for stop valve 19.6 to 29.4 200 to 300 6-5 TEST RUN • Before performing the test run, recheck for any wrong wiring. Wrong wiring prevents normal operation or results in blown fuse disabling operation. • The test run can be started by pressing EMERGENCY OPERATION switch. When the EMERGENCY OPERATION switch is once pressed, the unit will start the test run (continuous operation) for 30 minutes. A thermostat does not work during this time. After 30 minutes the unit will start the EMERGENCY OPERATION at a fixed temperature setting of 24 °C in COOL MODE. • Perform test run in the following procedure. Note: Insert the power supply plug into the power outlet and/or turn on the breaker. Check that both of the operation indicator lamps are not lit. If they are blinking, the horizontal vanes are not installed correctly. In this case, disconnect the power supply plug and/or turn off the breaker, and then reinstall the horizontal vanes. (See the OPERATING INSTRUCTIONS page 11.) PURGING PROCEDURES Connect the refrigerant pipes (both liquid pipe and the gas pipe) between the indoor and the outdoor unit. Remove the service port cap of the stop valve on the side of the outdoor unit gas pipe. (The stop valve will not work in it initial state fresh out of the factory (totally closed with cap on).) Connect the gauge manifold valve and the vacuum pump to the service port of the stop valve on the gas pipe side of the outdoor unit. Run the vacuum pump. (Vacuumize for more than 15 minutes.) Check the vacuum with the gauge manifold valve, then close the gauge manifold valve, and stop the vacuum pump. Leave as it is for one or two minutes. Make sure the pointer gauge manifold valve remains in the same position. Confirm that the pressure gauge shows–0.101 Mpa [Gauge] (–760 mmHg). Pipe length up to 7 m No gas charge is needed. Pipe length exceeding 7 m Charge the prescribed amount of gas. (refer to 3) Remove the gauge manifold valve quickly from the service port of the stop valve. After refrigerant pipes are connected and evacuated, fully open all stop valves on both sides of gas pipe and liquid pipe. Operating without fully opening lowers the performance and this causes trouble. Tighten the cap to the service port to obtain the initial status. Retighten the cap. Leak test 3. INSTALLATION DIAGRAM & ACCESSORIES FLARED CONNECTIONS • This unit has flared connections on both indoor and outdoor sides. • Remove the outdoor units valve cover, then connect the pipe. • Refrigerant pipes are used to connect the indoor and outdoor units. • Be careful not to crush or bend the pipe in pipe bending. Limits Pipe length 20 m max. Height difference 12 m max. No. of bends 10 max. • Refrigerant adjustment ... If pipe length exceeds 7 m, additional refrigerant (R410A) charge is required. (The outdoor unit is charged with refrigerant for pipe length up to 7 m.) Pipe length Up to 7 m No additional charge is required. Exceeding 7 m Additional charge is required. (Refer to the table below.) Refrigerant to be added 30 g/m . (refrigerant piping length (m) -5) ACCESSORIES Check the following parts before installation.