1. FEATURES SPACE SAVING, ELEGANCE AND PRESTIGE The unit is installed above the ceiling with only the supply and return air grille exposed to view. This ceiling concealed type of design has made it an “Evergreen” model without sacrificing the precious floor space. The air-conditioned space will appear as elegant and prestigious as centralized air-conditioned area but with only a fraction of the cost.
6. FAN PERFORMANCE CURVES External Static Pressure (mmAq) Model Fan Speed (CFM) High ACC10C Medium High ACC15C Medium High ACC20C Medium High 1060 1023 ACC25C Medium MODEL : ACC30C MODEL : ACC40C...
7. OUTLINES AND DIMENSIONS INDOOR UNIT MODEL : ACC10 C/CR All dimensions are in mm MODEL : ACC15 ~ 25 C/CR All dimensions are in mm Model ACC15C/CR 881.0 225.0 842.0 802.0 261.0 411.0 351.0 905.0 ACC20C/CR 1041.0 225.0 1002.0 962.0 261.0 411.0...
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MODEL : ACC30 ~ 60 C/CR All dimensions are in mm Model ACC30 C/CR 929.0 999.0 956.0 917.0 408.5 378.0 541.0 256.0 173.0 311.0 70.5 ACC40 C/CR 1045.0 1115.0 1072.0 1033.0 466.5 378.0 541.0 256.0 173.0 311.0 128.5 ACC50 C/CR 1299.0 1369.0 1326.0...
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OUTDOOR UNIT MODEL : ALC 10 / 15 B/BR A4LC 10 / 15 B/BR Note : Dimension in mm MODEL : ALC 20 / 25 B/BR, ALC 30B A4LC 20 / 25 B/BR Note : Dimension in mm...
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MODEL : ALC 30 / 40 / 50 / 60 C/CR A4LC 30 / 40 / 50 C/CR Note : Dimension in mm MODEL : AMC 60 C/CR Note : Dimension in mm...
9. SPECIAL PRECAUTIONS FOR R407C SPECIAL PRECAUTIONS WHEN DEALING WITH REFRIGERANT R407C UNIT 1) WHAT IS NEW REFRIGERANT R407C? R407C is a zeotropic refrigerant mixture which has Zero Ozone Depletion Potential (ODP = 0) and thus conformed to the Montreal Protocol regulation. It requires Polyol-ester oil (POE) oil for its compressor's lubricant. Its refrigerant capacity and performance are about the same as the refrigerant R22.
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c) Ensure that the compressor is not expose to open air for more than the recommended time specified by its manufacturer (typically less than 10 minutes). Removed the seal-plugs only when the compressor is about to be brazed. d) The system should be thoroughly vacuumed to 1.0 Pa (-700mmHg) or lower. This vacuuming level is more stringent than R22 system so as to ensure no incompressible gas and moisture in the system.
10. INSTALLATION PRELIMINARY SITE SURVEY Electrical supply and installation is to conform to local authority's codes and regulations. (e.g. National Electricity Board). Voltage supply fluctuation must not exceed +/- 10% of rated voltage. Electricity supply lines must be independent of welding transformers which can cause high supply fluctuation.
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OUTDOOR UNIT As condensing temperature rises, evaporating temperature rises and cooling capacity drops. In order to achieve maximum cooling capacity, the location selected for outdoor unit should fulfill the following requirements : • Install the condensing (outdoor) unit in away such that hot air distributed by the outdoor condensing unit cannot be drawn in again (as in the case of short circuit of hot discharge air).
11. OPERATION MAXIMUM PIPE LENGTH AND MAXIMUM NUMBER OF BENDS • When the pipe length becomes too long, both the capacity and reliability drop. As the number of bends increases, system piping resistance to the refrigerant flow increases, thus lowering the cooling capacity, and as the result the compressor may become defective.
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WIRING ELECTRICAL CONNECTIONS • Wiring regulations on wire diameters differ from country to country. Please refer to your LOCAL ELECTRICAL CODES for field wiring rules. Be sure that installation comply with such rules and regulations. GENERAL PRECAUTIONS • Ensure that the rated voltage of the unit corresponds to the name plate before carrying out proper wiring according to the wiring diagram.
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CAUTION FOR R407C Do not top-up when servicing leak, as this will reduce the unit performance. Vacuum the unit thoroughly and then charge the unit with fresh R407C according to the amount recommended in the specification. ADDITIONAL CHARGE • The refrigerant gas has already charged into the outdoor unit. For the piping length of 5m. Additional refrigerant charge after vacuuming is not necessary.
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STANDARD OPERATING CONDITION COOLING ONLY UNIT Temperature Ts °C Th °C minimum indoor temperature 19.4 13.9 maximum indoor temperature 26.7 19.4 minimum outdoor temperature 19.4 13.9 maximum- outdoor temperature 46.0 24.0 HEAT PUMP UNIT Temperature Ts °C Th °C minimum indoor temperature 10.0 maximum indoor temperature 26.7...
12. REMOTE CONTROL OPERATION GUIDE SENSOR ON/OFF ON/OFF AUTO COOL HIGH MODE TEMP TEMP HEAT SWING SLEEP TIMER SWING SLEEP TIMER MODE 6. “Sleep” mode 1. “ON/OFF” switch • Press button to activate the sleep function. • Press to start the air conditioner unit. •...
13. SERVICING AND MAINTENANCE Warning Disconnect from Main Supply before Servicing the air conditioner The unit is designed to give a long life operation with minimum maintenance required. However, it should be regularly checked and the following items should be given due attention. Components Maintenance Procedure Recommended Schedule...
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The design of the ALC outdoor series allows servicing to be carried out readily and easily. The removal of the top side, front and back panel make almost every part accessible. Under normal circumstances, these outdoor units only require a check and cleaning of air intake coil surface once quarterly.
14. TROUBLESHOOTING When any air-conditioner malfunction is noted, immediately switch off the power supply to the unit, and contact the local dealer, if necessary. Some simple troubleshooting tips are given below : FAULT CAUSE • Protection against the frequent starting. Wait 3 or 4 minutes. 1.
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FOR COOLING ONLY MODELS OR HEAT PUMP MODELS (COOLING CYCLE) DIAGNOSIS BY FLOW CHART The following chart are efficient checking procedures for troubleshooting when these fan-coil units, are coupled with the condensing units using standard wiring. For dual circuited models, perform the procedures for each circuit.
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INSUFFICIENT COOLING Insufficient Cooling Cycling On Compressor Cycling High Discharge Pressure or Low See "High Discharge Pressure" or Tripping Suction Pressure "Low Suction Pressure" Dual Pressure Switch Clogged Capillary or Pressure Repair Clogging and Replace Switch The Switch If Required Switch Faulty Repair or Change If Necessary Running...
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HIGH SUCTION PRESSURE High Suction Pressure Evaporator Air Inlet Excessive Fresh Air Intake Reduce The Fresh Air Intake Temperature Insufficient Duct Insulation Reinforce The Duct Insulation Defective Compressor Valve Change Or Repair The Compressor Overcharged Refrigerant Purge The Refrigerant LOW SUCTION PRESSURE Low Suction Pressure Evaporator Restricted...
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FOR HEAT PUMP MODELS By means of pressure readings : PRESSURE PROBABLE CAUSE Data Circuit High Side 1. Overcharged with refrigerant. Low Side 2. Non-condensable gases in refrigerant circuit (e.g. oil). 3. Obstructed air-intake/discharge. 4. Short circuiting of hot air outdoor unit. High Side 1.
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The most common causes of air conditioner failure to “start" are: a) Voltage not within ±10% of rated voltage. b) Power supply interrupted. c) Control settings improper. d) Air conditioner is disconnected from main power source. e) Fuse blown or circuit breaker off. ii) DIAGNOSIS OF REFRIGERANT CIRCUIT / APPLICATION There might be some cases where the unit starts running but does not perform satisfactory, i.e.
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