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Hitachi RPS-90AN, Instruction Manual

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    HITACHI SPLIT-TYPE AIR CONDITIONERS 

Installation, Operation and Maintenance 

INSTRUCTIONS MANUAL

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INVERTER DRIVEN 

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AIR-COOLED TYPE 

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IMPORTANT: 

 

 

READ AND UNDERSTAND THIS 
INSTRUCTION MANUAL BEFORE 
USING THIS AIR CONDITIONER. 
KEEP THIS MANUAL FOR FUTURE 
REFERENCE. 

 

 

 

 
 
 
 

65MP3195

Models : 

Indoor Unit   

    

Outdoor Unit 

RPS-90AN    +

    

RAC-90J

K

 

Summary of Contents for RPS-90AN

Page 1: ...ion and Maintenance INSTRUCTIONS MANUAL INVERTER DRIVEN AIR COOLED TYPE IMPORTANT READ AND UNDERSTAND THIS INSTRUCTION MANUAL BEFORE USING THIS AIR CONDITIONER KEEP THIS MANUAL FOR FUTURE REFERENCE 65MP3195 Models Indoor Unit Outdoor Unit RPS 90AN RAC 90JK ...

Page 2: ...for identifying hazard levels are provided below with their respective signal words Immediate hazards which WILL result in severe personal injury or death Hazards or unsafe practices which COULD result in severe personal injury or death Hazards or unsafe practices which COULD result in minor personal injury or product or property damage Useful information for this operation and or maintenance If y...

Page 3: ...ATION AND REFRIGERANT CHARGE 4 1 Evacuation Procedure 16 4 2 Refrigerant Charge 16 5 ELECTRICAL WIRING 5 1 Schedule Check 17 5 2 Main Power Wiring Procedures 17 5 3 Main Power Wiring Specification 18 5 4 Control Wiring 18 5 5 Grounding Specification 18 6 TEST RUNNING 6 1 Final Installation Check 19 6 2 Preparation 19 6 3 Test Running 19 6 4 Safety and Control Device Setting 20 7 MAINTENANCE 7 1 Co...

Page 4: ...me of Parts INDOOR UNIT 1 Horizontal Louver Vertical Louver Air Outlet Front Cover OUTDOOR UNIT Air Inlet Air Outlet Liquid Refrigerant Piping Gas Refrigerant Piping Air Inlet Field and Control Wiring Power Supply Main Circuit Breaker Leakage Breaker ...

Page 5: ...n please don t open windows entrances and exits unless necessary and minimize as possible the number of persons entering or leaving the room Doors or windows should be closed properly to prevent the cooled air to leak outside the room Set up window curtains or window blinds It can insulate the heat source coming through the windows When there is a possibility of lightning strike turn the unit off ...

Page 6: ...agnetic wave at least 3m above For example radio 4 3 If noise signals generated by the unit please add noise filter to countermeasure 5 Because heat element designed inside the surface is warm when we touch this is a normal phenomenon 6 Do not pull out the communication wire in order to avoid the poor signal transmission stallation and Wiring In 1 Do not install at places where flammable objects a...

Page 7: ...xed by opposite angle position Name of each part HITACHI Main Function Introduction NOTE Always press once to turn the Remote Control LCD light ON ON OFF Function To operate the power ON and power OFF of the unit POWER ON First time pressing the power ON button the LCD will light ON Pressing the power ON button the second time the LCD light will turn off and the ON OFF button will display blue lig...

Page 8: ...r ON OFF mode To set the timer the unit must be power OFF TO SET ON Press for timer ON operation and the display will appear 1 Hr as starting time Then adjust the time by pressing 1 24 Hr Each press is increased or decreased by 1Hr And the unit will automatically shutdown after the set time TO SET OFF Press the sleep button and the controller will automatically set the timer OFF then the unit will...

Page 9: ...ction by pressing button then press ENTER to turn OFF the auto sweep function Wiring 1 Method of connecting to air conditioner 1 1 Remove the front cover and electric box cover of the Indoor unit 1 2 Connect the communication wire to the PCB of the Indoor unit connector no CN22 1 3 Re install the electric box cover and front cover be careful don t clip the wire Abnormality 1 When abnormality occur...

Page 10: ...7 Please contact your service center if the problem is still not solved Do not try to repair the unit by yourself ARNING W Maintenance 1 Clean or replace the air filter 2 Clean the cabinet with clean dry cloth 3 Clean the condensate drain pan and the drain piping 4 Clean the condenser and evaporator coil Call your serviceman to do this type of work 5 Check for abnormal sound and vibration If you f...

Page 11: ...er 20m under 12 4 Do not install the air conditioner in place where there are flammable gases and acid solvents 5 Do not install the air conditioner near high frequency machines 6 No radiation sources shall be allowed near the installation site 7 The installation shall be duly secured for vibration and noise Hot air released from the outdoor unit shall be led off the neighboring windows Water drop...

Page 12: ...ront open space in the back by the sides and on the top 1 In case of existence of obstruction on top and in the back open space at front and by the side 9 4 In case of existence of obstruction in the back and on the front open space by the sides and on the top 5 In case of existence of obstruction in the surrounding open space on top Combined Installation 1 Horizontal 2 2 Unit Leveled Installation...

Page 13: ...on 3 In order to obtain proper clearance beneath the either rooftop or on the ground installation provide a gravel or concrete space around the outdoor unit air intake In order to avoid air flow obstruction due to grass or other vegetation 1 4 Unit Check Check to ensure that the unit has been transported without damage File a damage claim with the transportation companies if mishandling due to tra...

Page 14: ...th the anti tumbler angle iron 2 To keep the air conditioner from tumbling fix it on the floor and the wall Securing of the wall fixation angle iron Refer to the table below for measurement of distance between air conditioner and wall For vertical measurement to the floor refer to the angle iron installation site 11 ...

Page 15: ...atch for strong wind In case of installation in an open space such as on top of a tall building where the outdoor unit outlet oppose strong winds with impacts on its rotation and cooling capacity as well the following are suggestions for improvement Keep outdoor unit face as shown the wall and the inlet toward outside with a gap of 60cm between the wall and the front of the outdoor unit Keep outdo...

Page 16: ... the pipe 3 1 Preparations 1 Confirm that the piping are de oxidized seamless copper tubes and that they are free from dirt and moisture 2 Piping connections to the outdoor unit can be performed at the stop valves for liquid outlet and gas inlet in the machine compartment Flare nuts are attached at liquid and gas connections of the indoor and the outdoor unit 3 All refrigerant and drainage piping ...

Page 17: ... the piping the entire exposed tube adapter shall be duly covered with insulator and tightened with a band Tightening Flare Nut When tightening the flare nut utilize two spanners as shown below The required tightening torque is as follows Pipe Size Tightening Torque mm in kgf cm 6 35 1 4 140 190 9 53 3 8 350 450 12 7 1 2 450 550 15 88 5 8 500 600 Tightening Work of Flare Nut DANGER Do not charge O...

Page 18: ... piping length 30m 3 3 Drainage piping 1 The indoor drainage and the outdoor drainage shall be joined with adherent agents 2 For assurance of normal drainage tubing operation a water filler shall be given for a gradual adding of 1000cc of water from the right side of the air outlet to the evaporator while checking for leakage in the drainage ...

Page 19: ...ion of the gauge shows approximately 756mmHg 3 Stop the vacuum pump wait for approximately 5 minutes and confirm the vacuum pressure has not increased 4 Close the vacuum pump connection line V1 V2 closed 4 2 Refrigerant Charge 1 Purge air from the refrigerant cylinder connection line V1 V2 closed 2 Charge liquid refrigerant gas as required into the refrigeration cycle by weighing the refrigerant c...

Page 20: ... 230V 60Hz 5 2 Main Power Wiring Procedures 1 If the phase is wrong exchange two of the three wires connected from the main power source to the main terminals of the unit as indicated with the dotted lines and then check the rotation direction of the phase sequence indicator once again Do not exchange the wires in the unit side in order to protect the compressor against the reversal rotation Locki...

Page 21: ...a 5 4 Control Wiring Connect the control wires between the indoor unit terminals and the outdoor unit terminals according to the following to the wiring label B C A RED WHITE BLACK 1 2 3 Indoor Unit Terminal Outdoor Unit Terminal Indoor unit 5 5 Grounding Specification 1 Grounding impedance shall be below 100 2 Grounding wire of over Ø 2 0mm and up in diameter RPS 90AN RAC 90JK ...

Page 22: ...n tightened 6 2 Preparation Tools and Instruments High and Low Pressure Compound Gauge s Electrical Tester General Tools Confirm the system switch is at the OFF position 6 3 Test Running When the unit is wired according to the standard label test running should be performed as follows 1 Confirm the system switch is at OFF position 2 Check to ensure that the electrical resistance is more than 1 meg...

Page 23: ...h Cut out kg cm2 G 42 kPa 4150 Cut In kg cm2 G 32 kPa 3200 Discharge Gas Thermostat Cut Out o C 110 Cut In o C Internal Thermostat for Outdoor Fan Motor Cut Out o C 110 Cut In o C Reverse Phase Protection Relay For Outdoor Fan Motor Fuse Capacity A 2 5 For Control Circuit Fuse Capacity A 2 5 For Power Circuit Fuse Capacity A 25 20 RAC 90JK ...

Page 24: ...oosened fixed screw and abnormal sounds 8 Operate Panel Check for abnormal function 7 2 Lubrication Compressor The compressors are charged at the factory with the correct quantity of oil listed on the compressor nameplates It is unnecessary to add oil if the refrigeration cycle remains sealed Fan Motor Bearings of fan motor are pre lubricated Lubrication is not required 7 3 Refrigerant Charge When...

Page 25: ...om the condenser and evaporator coils 5 Check the fan screw tightness 6 Check the fan balance and try to operate the fan 7 Inspect the refrigerant piping for leakage 8 Tighten all wiring connections and access panels 7 6 Replacement of Parts Replacement of parts should be performed by ordering from the HITACHI Parts List The Form A HITACHI Recommended Spare Parts List is advisable When replacement...

Page 26: ...WB__________________o C 6 Check suction line Temperature and Superheat Suction line Temperature ______________o C Superheat ______________o C 7 Check Pressures Gas Valve Pressure __________________________kg cm G Liquid Valve Pressure _________________________kg cm G 8 Check Voltage Rated Voltage __________________________V Operation Voltage 1 2_________________V 2 3________________V 3 1__________...

Page 27: ...eport Zone Philippines TEL 02 362 4847 TEL SERVICE 02 362 3842 RP AF H Specifications in this manual are subject to change without prior notice in order that HITACHI may bring the latest innovations to our customers Johnson Controls Hitachi Air Conditioning Philippines Inc ...

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