Related Manuals for Haier AC-8888-107
Summary of Contents for Haier AC-8888-107
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Page 1: Air Conditioner
HAIER COMMERCIAL AIR CONDITIONER Service Manual Part # AC-8888-107 HAIER TRADING COMPANY, LLC www.haieramerica.com... - Page 2 Mode- HR18A1VAR HR24A1VAR HR30A1VAR HR36A1VAR HR42A1VAR HR48A1VAR HR60A1VAR ●Features High efficiency design Hermetic compressor design Haier Hi-Efficiency fin and copper tube design Compact design of outdoor unit Convenient for installation and maintenance Heat pump, 10SEER Manual code: SYJS----AM-----004-05---Rev.2 Edition: 2005-03-22...
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Page 3: Table Of Contents
Commercial Air Conditioner Model: heat pump, 10SEER UNITS CONTENTS 1. DESCRIPTION OF PRODUCTS & FEARURES……………………..3 2.PHYSICAL AND ELECTRICAL SPECIFICATIONS………………..…5 3.SAFETY PRECAUTION…………………………………………….……9 4.SYSTEM COMPONENTS AND FUNCTIONS …………………………9 5.ELECTRICAL CONTROL DEVICES…………………………….…….11 6.APPLICATION…………………..……………………………………..…12 7.REFRIGERANT DIAGRAM ………………………………..…….……..13 8. INSTALLATION INSTRUCTIONS………………………..…………..14 9.MAINTENANCE INSTRUCTIONS………………………………..…….31 10.SERVICE AND TROUBLESHOOTING ……………………...………32 11.WIRING DIAGRAMS……………………………….…………………...43 12. -
Page 4: Description Of Products & Fearures
1.2 NOMENCLATURE FOR MODEL NUMBE Example Nominal Reserved SEER Design Haier System type capacity in Electric Designation Body style designation series (1000) Btuh A:10SEER;... - Page 5 Commercial Air Conditioner Model: heat pump, 10SEER UNITS CABINETS-Constructed of powder painted and galvanized steel providing protection to the outdoor unit and a durable finish. Fig.1-2 Facilitates unit servicing and provides a reliable and safe access to measure unit SERVICE VALVES- pressures .
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Page 6: Physical And Electrical Specifications
Commercial Air Conditioner Model: heat pump, 10SEER UNITS 2.Physical and Electrical Specifications 10 SEER Model Number HR18A1VAR HR24A1VAR HR30A1VAR HR36A1VAR HR42A1VAR HR48A1VAR HR60A1VAR 1.5-Ton Outdoor 2-Ton Outdoor 2.5-Ton Outdoor 3-Ton Outdoor 3.5-Ton Outdoor 4-Ton Outdoor 5-Ton Outdoor Comments Model Status New Model New Model New Model... - Page 7 Y es Y es Y es Y es Coil Design Haier Enhanced Co aier Enhanced Co aier Enhanced Co aier Enhanced Co aier Enhanced Co aier Enhanced Co aier Enhanced Co Fully Enclosed Motor Y es Y es Y es...
- Page 8 Commercial Air Conditioner Model: heat pump, 10SEER UNITS Filter Dry er Standard Standard Standard Standard Standard Standard Standard Full, Reusable Serv ice Valv es Y es Y es Y es Y es Y es Y es Y es Easy Serv ice Access Y es Y es Y es...
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Page 9: Safety Precaution
Commercial Air Conditioner Model: heat pump, 10SEER UNITS 3.SAFETY PRECAUTIONS CAUTION : To ensure proper installation and operation, completely read all instructions prior to attempting to assemble ,install ,operate, maintain or repair the product. WARNING:THE MANUFACTURER’S WARRANTY DOES NOT COVER ANY DAMAGE OR DEFECT CONDITIONER CAUSED ATTACHMENT... - Page 10 Commercial Air Conditioner Model: heat pump, 10SEER UNITS prevents thermostat short cycling and momentary power interruptions ,from damaging the compressor. Both compressor types are protected against over-current and over-temperature conditions. Some scroll compressors have an additional thermostat mounted externally in series electrically with the contactor coil.
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Page 11: Electrical Control Devices
Commercial Air Conditioner Model: heat pump, 10SEER UNITS Distributor assy Fig.4-4 REFRIGERANT CIRCUIT There are two types of outdoor coil circuiting: single and multi-circuited. The 10 series are all multi –circuits. Fig.4-5 SERVICE VALVES There are two types of service valve used on the air conditioning .They are the service port valve or “Schrader valve”... -
Page 12: Application
Commercial Air Conditioner Model: heat pump, 10SEER UNITS automatically when pressure value becomes normal. Fig.1-10 RELAYS Relays provide control switching .The voltages controlled may be either low(24V.A.C.)or line voltage. It is usually 24 volts. Contact voltage may be either low or line voltage. COMPREESSOR CONTACTOR The compressor contactor is a large relay. -
Page 13: Unit Dimensions
Commercial Air Conditioner Model: heat pump, 10SEER UNITS The cooling load calculation determines the unit size. There are two capacities that enable the equipment to provide comfort. The first is sensible capacity. How much sensible heat can the unit remove? Sensible heat is the heat energy measured on the dry bulb thermometer. The second form of heat is called latent or hidden heat. -
Page 14: Installation Instructions
Commercial Air Conditioner Model: heat pump, 10SEER UNITS piston sizes: Note: the piston placed in the outdoor unit packaging box is used for indoor unit when cooling. Piston Piston Size Outdoor unit Size(placed Indoor coil model (Installed in in package outdoor) bag) HR18A1VAR... - Page 15 Commercial Air Conditioner Model: heat pump, 10SEER UNITS Heat Pump Refrigerant Circuit Figure 7 Cooling DISCHARGE TEMP. SENSOR SERVICE PORT REVERSING VALVE SERVICE VALVE HIGH PRESSOR LOW PRESSOR ACCUMULATOR COMPRESSOR SERVICE PORT SERVICE PORT DEFROSED SENSOR CHECK VALVE INDOOR COIL OUTDOOR COIL DRYER CHECK VALVE ORIFICE...
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Page 16: Equipment Protection From Environment
Commercial Air Conditioner Model: heat pump, 10SEER UNITS injury or death. This product is designed and manufactured to permit installation in accordance with National Codes. It is the installer's responsibility to install the product in accordance with National Codes and/or prevailing local codes and regulations. The manufacturer assumes no responsibility for equipment installed in violation of any codes or regulations. - Page 17 Commercial Air Conditioner Model: heat pump, 10SEER UNITS The metal parts of the unit may be subject to rust or corrosion in adverse environmental conditions. This oxidation could shorten the unit life. Salt spray or mist in seacoast areas, sulphur or chlorine from lawn watering systems and various chemical contaminants from industries such as paper mills and petroleum refineries are especially corrosive.
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Page 18: Unit Clearances
Commercial Air Conditioner Model: heat pump, 10SEER UNITS ! WARNING - Install the unit securely in a place that can bear the weight of the unit. When installed in an insufficiently strong place, the unit could fall causing injury. 8.4.UNIT CLEARANCES Fig. - Page 19 Commercial Air Conditioner Model: heat pump, 10SEER UNITS Figure A Figure B Figure C Fig. 8-2 Only refrigeration-grade copper piping (dehydrated and sealed) should be used. Take extreme care to keep the refrigerant tubing clean and dry prior to and during installation. If in doubt, blow out the tubing with dry nitrogen to remove any chips or debris before connection.
- Page 20 Commercial Air Conditioner Model: heat pump, 10SEER UNITS undesirable heat transfer resulting in capacity loss and increased power consumption. Refrigerant Line Sizing Check the following table (Table 8-1) for correct suction and liquid line sizes for any combination of the unit size and the maximum refrigerant line length. Refrigerant Line Sizing Refrigerant Line Length (Ft) Unit Size...
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Page 21: Charging The System
Commercial Air Conditioner Model: heat pump, 10SEER UNITS 3.Push the tubing into the fitting until it stops. This prevents flux from getting into the system. 4.Remove the cap and Schrader valve core from the service port to protect the valve seals. 5.Wrap a wet rag around the valve stub before brazing. -
Page 22: Electrical Wiring
Commercial Air Conditioner Model: heat pump, 10SEER UNITS System Superheat Ambient Return Air Temperature ( ) ℉ Temperature At Condenser Inlet ℉ Table 8-2:System charging table by superheat 8.8.ELECTRICAL WIRING ! WARNING – A means of strain relief must be installed to this appliance at the electrical service entrance. - Page 23 Commercial Air Conditioner Model: heat pump, 10SEER UNITS Copper Wire Size - AWG (1% Voltage Drop) Supply Circuit Supply Wire Length - Ft Ampacity Table8-3: Minimum Wire Size Based on N.E.C. for 60 C Type Copper Conductors Below 100 Ampacity. The owner should be made familiar with the location of the over-current protection, the proper size for this application and the proper procedure for disconnecting power service to the unit.
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Page 24: Indoor Unit Installation
Commercial Air Conditioner Model: heat pump, 10SEER UNITS 8.9 INDOOR UNIT INSTALLATION UNIT DIMENSIONS a. For HB***M20 air handler Fig. 8--3... - Page 25 Commercial Air Conditioner Model: heat pump, 10SEER UNITS b. For HB***M25 air handler 12.2" 0.83" 0.83" 0.83" [31 cm] [2.12 cm] [2.12 cm] [2.12 cm] 5.12" [13 cm] PRIMARY & SECONDARY CONDENSATE DRAINS- HORIZONTAL 3/4" NPT SUCTION LINE 2.00" 2.00" [5.08 cm] [5.08 cm] TYPICAL...
- Page 26 Commercial Air Conditioner Model: heat pump, 10SEER UNITS Before installing this appliance insure that it is properly sized and adequate power is available. This appliance can be installed in the vertical or right horizontal position without modification. The horizontal left and downflow positions require product modification. This product is designed for zero inch (0") clearance;...
- Page 27 Commercial Air Conditioner Model: heat pump, 10SEER UNITS Fig.8-4 HORIZONTAL LEFT-HAND INSTRUCTIONS Important: Read instructions below carefully. Fig.8-5 1) With Air handler in the vertical position, remove all three access panels. 2) Remove J-shape metal bracket. Slide out from the Air handler cavity the "A" coil pan assembly with horizontal drain pan on the right side.
- Page 28 Commercial Air Conditioner Model: heat pump, 10SEER UNITS knockout only if this drain is required in this particular installation. WARNING: If incorrect knockouts are removed, flooding will occur. 5) Reinstall in the Air handler , the "A" coil pan assembly with the horizontal drain pan on the left-hand side.
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Page 29: Downflow Instructions
Commercial Air Conditioner Model: heat pump, 10SEER UNITS DOWNFLOW INSTRUCTIONS Important: Read instructions below carefully 1.Before putting the Air Handler in the downflow position, remove the three access panels and remove the metal coil retaining bracket and filter close off. Then remove the horizontal and vertical drain pans. - Page 30 Commercial Air Conditioner Model: heat pump, 10SEER UNITS THIS APPLIANCE EMPLOYS A DRAW-THROUGH COIL, THEREFORE A TRAP MUST BE INSTALLED IN THE DRAIN LINE(S) TO ALLOW FOR PROPER CONDENSATE DISPOSAL. The condensate trap must not be the "running" type, or "R" type. A "P " trap is required. The total workable height of this trap, in inches, must exceed the total negative pressure, in inches of water, as measured in the return duct.
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Page 31: System Startup
Commercial Air Conditioner Model: cooling only, 10SEER UNITS TABLE 8-4 Max.Over- Model Min. ampacity Fan motor Blower motor Blower motor current(A) (indoor units) 208/230V capacitor(UF) 208/230V HB2400VA1M20 15/15 HB2400VC1M20 15/15 HB3000VA1M20 15/15 HB3600VA1M20 15/15 HB3600VC1M25 15/15 HB4200VA1M25 15/15 HB4800VA1M25 15/15 HB6000VA1M25 15/15 HB6000VC1M25... -
Page 32: Maintenance Instructions
Commercial Air Conditioner Model: heat pump, 10SEER UNITS 4. This warm ,high pressure liquid leaves the outdoor coil ,and flows through the small copper refrigerant liquid line. 5. At the end of the liquid line the refrigerant passes through the a flowcheck device ,reducing a pressure and temperature . -
Page 33: Service And Troubleshooting
Commercial Air Conditioner Model: heat pump, 10SEER UNITS A. First TURN OFF ELECTRICAL POWER to the outdoor unit B. Remove the top with the outdoor fan attached. C. Flush water through the coil from the inside out. NOTE: Do not to get water on any controls or other electrical devices. If anything electrical gets wet, dry it thoroughly before energizing. - Page 34 Commercial Air Conditioner Model: heat pump, 10SEER UNITS a system and safely stores it in a department of Transportation (DOT) approved container until it is re-used or returned for reclaim. The authors of the EPA regulations enforcing the Clean Air Act realized that an accidental release of the refrigerant may happen in the course of normal service.
- Page 35 Commercial Air Conditioner Model: heat pump, 10SEER UNITS ………….Correct control voltage ………….Proper disconnect switches and breakers for indoor and outdoor units ………….Correct wire sides for both indoor and outdoor units. OUTDOOR UNIT INSTALLATION ………….Unit level with proper clearances for air flow and service …………..Proper elevation of outdoor unit …………..Solid pad ………….Coil free from dirt and debris...
- Page 36 Commercial Air Conditioner Model: heat pump, 10SEER UNITS Run capacitor Fig.10-2 Some compressor require the assistance of an additional potential relay to start. The potential relay connect to the contactor. The potential use two terminals:5 and 2 ;The relay coil that opens them is between terminal 2 and 5 START KIT ELECTRICAL CHECKS WARNING:DISCONNECT ALL POWER TO THE OUTDOOR UNIT BEFORE BEGINNING THIS...
- Page 37 Commercial Air Conditioner Model: heat pump, 10SEER UNITS electrical characteristics. CONDENSER FAN BLADE LOCATION Dimension “A” will be from 2” to 4” depending on the unit model number. Be sure to check this dimension BEFORE removing the fan blade. Note: When parts combination results in motor /blade interference ,the fan blade should be located to provide 1/8” motor /blade clearance.
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Page 38: Wiring Diagrams
Commercial Air Conditioner Model: heat pump, 10SEER UNITS drop tables are available ,they indicate the cubic feet of air per minute(CFM) moving through the coil .An inclined manometer is an example of this type of instrument. A velometer measures the velocity of the air in feet per minute(FPM). If the area of duct is known, the velometer reading times the area of duct (in square feet ) calculates the air flow. - Page 39 Commercial Air Conditioner Model: heat pump, 10SEER UNITS B. Measure from Start TERMINAL TO COMMON TERMINAL. .Middle ohm value of the three measurements. .Approximately 2.0 to 3.0 ohms Measure from Start TERMINAL TO Run terminal. .Highest ohm value of the three measurements. .Approximately the sum of the first two measurements.
- Page 40 Commercial Air Conditioner Model: heat pump, 10SEER UNITS A. suction pressure holds. normal condition. B. Suction pressure rises to a point and stops. .Some refrigerant finally evaporated in the coil and made its pressure felt on the gauge .Normal condition .Do not start the compressor to force this little refrigerant into the condenser. C.
- Page 41 Commercial Air Conditioner Model: heat pump, 10SEER UNITS and moisture. ACTION: Remove and recover the refrigerant .Evacuate the system Charge with fresh ,clean refrigerant. B. The system pressure is below the chart pressure. Cause :A mixed refrigerant is present . ACTION: Remove and recover the refrigerant .Evacuate the system Charge with fresh ,clean refrigerant.
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Page 42: Troubleshooting Guide
Commercial Air Conditioner Model: heat pump, 10SEER UNITS .Break each vacuum with dry nitrogen to 3.0 psi. Use the largest connections and hoses possible to expedite the process. J. Charge with clean ,new or reclaimed R-22 refrigerant .Charge in accordance with proper charging procedures. - Page 43 Commercial Air Conditioner Model: heat pump, 10SEER UNITS Run or start capacitor defective Replace Loose connection Check and tighten all connections. Compressor stuck, grounded or open Wait for 2 hours for overload to reset. Condenser fan runs, motor winding, open internal overload Replace compressor if still open.
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Page 44: Wiring Diagram
Commercial Air Conditioner Model: heat pump, 10SEER UNITS 11. Wiring Diagram Heat Pump Wiring Diagram 0010575257 LINE VOLTAGE INDOOR FACTORY STANDARD OUTDOOR FIELD INSTALLED UNIT OPTIONAL UNIT OPTIONAL ELECTRIC HEATER KIT STRLY LOW VOLTAGE BRK L1 CMPR FACTORY STANDARD FIELD INSTALLED RCAP USE COPPER CONDUCTORS ONLY WARNING CABINET MUST BE PERMANENTLY GROUNDED... - Page 45 Commercial Air Conditioner Model: heat pump, 10SEER UNITS Sincere Forever Haier Group Haier Industrial Park, No.1, Haier Road 266101, Qingdao, China http://www.haier.com...