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Table of Contents
Related Manuals for Hitachi Primairy Series
Summary of Contents for Hitachi Primairy Series
- Page 1 LARGE SINGLE SPLIT DC-INVERTER SERIES OUTDOOR UNITS RAS-3.0UFESNH1 RAS-3.5UFESNH1 RAS-4.0UFESNH1 RAS-5.0UFESMH1 RAS-6.0UFESMH1 RAS-6.5UFESMH1 HO2019292HA...
- Page 3 NOTE • This air conditioner is designed for the following temperatures. It should be operated within this range: Outdoor operation temperature range (ºC) Mode Maximum Minimum Cooling operation Heating operation • Storage condition: T emperature -25~60ºC Humidity 30%~80% • The numbers in the model represent the cooling capacity (HP). • For example, 3.0HP represents RAS-3.0UFESNH1.
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Page 4: Table Of Contents
Contents Safety precautions ............................1 Refrigerant flow diagram ..........................9 Electrical wiring diagram ..........................9 Installation instructions ..........................10 Transportation and handling before installation ......................10 Installation locations selection ............................. 10 Drainage elbow and drain hose installation ........................11 Outdoor unit installation ..............................11 Refrigerant piping ................................ -
Page 5: Safety Precautions
SAFETY PRECAUTIONS Safety precautions This air conditioner uses new refrigerant HFC(R32). Since the max. working pressure is 4.3MPa (R22: 3.1MPa), some of the piping and installation and service tools are special. This air conditioner uses power supply: 220-240V ~, 50Hz (3.0/3.5/4.0HP) 380-415V 3N ~, 50Hz (5.0/6.0/6.5HP) Please read these SAFETY PRECAUTIONS carefully to ensure correct installation. - Page 6 SAFETY PRECAUTIONS CAUTION • Perform grounding. Do not connect the earth wire to a gas pipe, water pipe, lightning rod or telephone earth wire. Defective grounding could cause an electric shock. • Do not install the unit in a place where an inflammable gas leaks. If gas leaks and accumulates in the area surrounding the unit, it could cause an explosion. • Fasten a flare nut with a torque wrench as specified in this manual. When fastened too tight, a flare nut may break after a long period, thereby causing refrigerant leakage. • Install an earth leakage breaker depending on the installation place (where it is humid). If an earth leakage breaker is not installed, it could cause an electric shock. • Perform the drainage/ piping work securely according to the installation manual. • If there is a defect in the drainage/piping work, water could drop from the unit and household goods could be wet and damaged.
- Page 7 SAFETY PRECAUTIONS Safety precautions for using R32 refrigerant The basic installation work procedures are the same as the conventional refrigerant (R22 or R410A). However, pay attention to the following points: WARNING 1 Transport of equipment containing flammable refrigerants Attention is drawn to the fact that additional transportation regulations may exist with respect to equipment containing flammable gas. The maximum number of pieces of equipment or the configuration of the equipment permitted to be transported together will be determined by the applicable transport regulations. 2 Equipment signs Signs for similar appliances (containing flammable refrigerants) used in a work area generally are addressed by local regulations and give the minimum requirements for the provision of safety and/or health signs for a work location. All required signs are to be maintained and employers should ensure that employees receive suitable and sufficient instruction and training on the meaning of appropriate safety signs and the actions that need to be taken in connection with these signs. The effectiveness of signs should not be diminished by too many signs being placed together. Any pictograms used should be as simple as possible and contain only essential details.
- Page 8 SAFETY PRECAUTIONS • All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which flammable refrigerant can possibly be released to the surrounding space. • Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable hazards or ignition risks. “No Smoking” signs shall be displayed. 6.7. Ventilated area • Ensure that the installation area is outdoors or that it is adequately ventilated before dismanteling the system or conducting any hot work. • Ventilation shall continue during the period that the work is carried out. • The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere. 6.8. Checking the refrigeration equipment • Where electrical components are being changed, they shall be fit for the purpose and to the correct specification.
- Page 9 SAFETY PRECAUTIONS 8 Repairing intrinsically safe components • Do not apply any permanent inductive or capacitive loads to the circuit without ensuring that this will not exceed the permissible voltage and current for the equipment in use. • Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmosphere. The test device shall be at the correct rating. • Replace components only with parts specified by the manufacturer. • Other parts may result in the ignition of refrigerant in the atmosphere from a leak. 9 Cabling • Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. • The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.
- Page 10 SAFETY PRECAUTIONS 13 Charging procedures • In addition to conventional charging procedures, the following requirements shall be followed: Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimise the amount of refrigerant contained in them. Cylinders shall be kept upright.
- Page 11 SAFETY PRECAUTIONS • In addition, a set of calibrated weighing scales shall be available and in good working order. • Hoses shall be complete with leak-free disconnect couplings and in good condition. • Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release. • Consult manufacturer if in doubt. • The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant Waste Transfer Note arranged.
- Page 12 SAFETY PRECAUTIONS Explanation of symbols displayed on the indoor unit or outdoor unit This symbol shows that this appliance uses a flammable refrigerant. WARNING If the refrigerant is leaked and exposed to an external ignition source, there is a risk of fire. CAUTION This symbol shows that the operation manual should be read carefully. This symbol shows that a service personnel should handle this equipment with reference to CAUTION the installation manual.
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Page 13: Refrigerant Flow Diagram
REFRIGERANT FLOW DIAGRAM Refrigerant flow diagram INDOOR UNIT OUTDOOR UNIT piping Compressor Accumulator Service valve with check joint 4-way valve Liquid piping Service valve Heating cycle Cooling cycle Electrical wiring diagram Outdoor unit Outdoor unit Indoor unit Indoor unit Terminals Terminals Terminals Terminals 1(L) 1(L) Transmission cable Transmission cable 1(L) -
Page 14: Installation Instructions
INSTALLATION INSTRUCTIONS Installation instructions Transportation and handling before installation Transport the product as close to the installation location as practical before unpacking. • Handling Method • Handling When handling the unit, ensure a balance of the unit, check If the product has no package to move, please protect with safety and lift it up smoothly. cloth or paper. 1 Do not remove any packing materials. 2 Hang the unit under packing condition with two ropes, as shown in figure below. Put cloth or paper Installation locations selection Before choosing the installation site, obtain user’s approval. • Where it is not exposed to strong wind. -
Page 15: Drainage Elbow And Drain Hose Installation
INSTALLATION INSTRUCTIONS Drainage elbow and drain hose installation Install Drainage Elbow and Drain Hose • The condensate water may drain from the outdoor unit when the unit operates in heating mode. In order to avoid disturbing neighbors and protect the environment, it is necessary to install a drainage elbow and a drain hose to drain out the condensate water. -
Page 16: Refrigerant Piping
INSTALLATION INSTRUCTIONS Refrigerant piping 1 Piping requirement Outer diameter of pipe (mm) Model Liquid 3.0/3.5HP 15.88 9.52 4.0/5.0/6.0/6.5HP 19.05 9.52 The shorter the refrigerant piping is, the better the performance will be. So the connecting pipe should be as short as possible. Pipe length L Indoor unit Slope: 1/200~1/250 Height difference H Outdoor unit... - Page 17 INSTALLATION INSTRUCTIONS CAUTION When installing pipe through the wall, Do not place the pipe directly on the Correct Incorrect secure a cap at the end of the pipe. ground. Correct Incorrect Correct Incorrect Rain water can enter Attach a cap or vinyl Attach a cap or Attach a cap or bag with rubber band.
- Page 18 INSTALLATION INSTRUCTIONS 4 Piping connection 1. Confirm that the valve is closed 2. Connect the indoor unit and the outdoor unit with field-supplied refrigerant piping. Suspend the refrigerant piping at certain points and prevent the refrigerant piping from touching the weak part of the building such as wall, ceiling, etc. (If touched, abnormal sound may occur due to the vibration of the piping. Pay special attention in case of short piping length.) Double spanner work 3. Tighten the flare nut with two spanners as shown in the right figure. Tube size Torque (Nm) 4. Apply the refrigerant oil (field-supplied) thinly at the seat surface of ∅6.35mm the flare nut and pipe before connecting and tightening. And when ∅9.52mm tightening the flare nut, use two spanners. ∅12.7mm 5. Outdoor refrigerant piping should connect with stop valve. ∅15.88mm ∅19.05mm Tightening torque for flare nut...
- Page 19 INSTALLATION INSTRUCTIONS 6 Vacuum pumping and charge refrigerant • Vacuum pumping 1. Remove the service port cap of the stop valve on the gas pipe side of the outdoor unit. 2. Connect the manifold gauge and vacuum pump to the service port of the stop valve on the gas pipe side of the outdoor unit.
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Page 20: Wiring
INSTALLATION INSTRUCTIONS Wiring WARNING • Turn OFF the main power switch of the indoor unit and the outdoor unit and wait for more than 3 minutes before electrical wiring work or a periodical check is performed. • Check to ensure that the indoor fan and the outdoor fan have stopped before electrical wiring work or a periodical check is performed. • Protect the wires, electrical parts, etc. from rats or other small animals. If not protected, rats may gnaw at unprotected parts and at the worst, a fire will occur. • Avoid the wiring from touching the refrigerant pipes, plate edges and electrical parts inside the unit. If not do, the wires will be damaged and at the worst, a fire will occur. • Install an ELB (Electric Leakage Breaker) in the power source. If ELB is not used, it will cause electric shock or fire at the worst. • This unit uses an inverter, which means that it must be used an earth leak detector capable of handing harmonics in order to prevent malfunctioning of the earth leak detector itself. - Page 21 INSTALLATION INSTRUCTIONS Electrical wiring diagram Power source Transmission cable size cable size Circuit breaker Model (capacity) Power supply Nominal sensitive Rated current (A) EN60335-1*1 EN60335-1*1 current (mA) 3.0/3.5HP 220-240V ~, 50Hz 3x2.5mm 4x1.5mm 4.0HP 220-240V ~, 50Hz 3x4.0mm 4x1.5mm 5.0/6.0/6.5HP 380-415V 3N ~, 50Hz 5x2.5mm 4x1.5mm Max. Running Current (A): REFER TO NAMEPLATE NOTE: 1 Follow local codes and regulations when selecting field wires, and all the above are the minimum wire size.
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Page 22: Test Run
INSTALLATION INSTRUCTIONS Test run Test run should be performed after refrigerant piping, drain, wiring, etc. have been finished. CAUTION The air conditioner is provided with a crankcase heater, check to ensure that the switch on the main power source has been ON for more than 6 hours ahead of power on preheating, otherwise it might damage the compressor! Do not operate the system until all the check points have been cleared. a. Check to ensure that the stop valves of the outdoor unit are fully opened. b. Check to ensure that the electric wires have been fully connected. c. Check to ensure that the electrical resistance is more than 2MΩ, by measuring the resistance between ground and the terminal of the electrical parts. If not, do not operate the system until the electrical leakage is found and repaired. Test run function identification Operate remote controller to turn ON the appliance, and then proceed test run. Pay attention to the following items while the system is running. Do not touch any of the parts by hand at the discharge gas side, since the compressor chamber and the pipes at the discharge side are heated higher than 90ºC. - Page 24 They can take this product for environmental safe recycling. Specifications in this document are subject to change without notice, in order that Hitachi-Johnson Controls Air Conditioning, Inc. may bring the latest innovations to their customers.