Hitachi RPC-2.0FSR Installation & Maintenance Manual
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Hitachi RPC-2.0FSR Installation & Maintenance Manual

Inverter-driven multi-split system heat pump air conditioners
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Installation
&
Maintenance
Manual
INVERTER-DRIVEN
MULTI-SPLIT SYSTEM
HEAT PUMP
AIR CONDITIONERS
Type
RPC-1.5FSR
RPC-2.0FSR
RPC-2.5FSR
Ceiling
RPC-3.0FSR
RPC-4.0FSR
RPC-5.0FSR
RPC-6.0FSR
IMPORTANT:
READ AND UNDERSTAND
THIS MANUAL BEFORE
INSTALLING THIS HEAT
PUMP AIR CONDITIONERS.
KEEP THIS MANUAL FOR
FUTURE REFERENCE.
Model
A10762300A

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Summary of Contents for Hitachi RPC-2.0FSR

  • Page 1 Installation & Maintenance Manual INVERTER-DRIVEN MULTI-SPLIT SYSTEM HEAT PUMP AIR CONDITIONERS Type Model RPC-1.5FSR RPC-2.0FSR RPC-2.5FSR Ceiling RPC-3.0FSR RPC-4.0FSR RPC-5.0FSR RPC-6.0FSR IMPORTANT: READ AND UNDERSTAND THIS MANUAL BEFORE INSTALLING THIS HEAT PUMP AIR CONDITIONERS. KEEP THIS MANUAL FOR FUTURE REFERENCE.
  • Page 3 IMPORTANT NOTICE ● HITACHI pursues a policy of continuing improvement in design and performance of products. The right is therefore reserved to vary specifications without notice. ● HITACHI cannot anticipate every possible circumstance that might involve a potential hazard. ● This heat pump air conditioner is designed for standard air conditioning only. Do not use this heat pump air conditioner for other purpose such as drying clothes, refrigerating foods or for any other cooling or heating process. ● Do not install the unit in the following places. It may cause a fire, deformation, corrosion or failure. * Places where a fire, oil, steam or powder may enter directly to the unit such as right above a kitchen, etc. * Places where oil (including machinery oil) may be present in quantities. * Places where a lot of sulfide gas drifts such as in a hot spring. * Places where inflammable gas may generate or flow. * Places where strong salty wind blows such as coast regions. * Places with an atmosphere of acidity or alkalinity. * Places where gas from festering trash, etc. may generate. ● Do not install the unit in the place where silicon gas drifts. If the silicon gas attaches to the surface of heat exchanger, the fin surface repels water. As a result, drain water splashes outside of the drain pan and splashed water runs inside of electrical box. In the end, water leakage or electrical devices failure may occur. ● Pay attention to the following points when the unit is installed in a hospital or other facilities where an electromagnetic wave generates from a medical equipment. * Do not install the unit in the place where an electromagnetic wave is directly radiated to the electrical box, controller cable or controller. * Install the unit at least 3 meters away from an electromagnetic wave such as a radio. ● Do not install the unit in the place where the breeze directly catches animals and plants. It could adversely affect animals and plants. ● The installer and system specialist shall secure safety against the refrigerant leakage according to local regulations or standards. The following standards may be applicable, if local regulations are not available. International Organization for Standardization, ISO5149 or European Standard, EN378 or Japan Standard, KHKS0010. ● This unit RPC-(1.5~6.0)FSR is a partial unit air conditioner, complying with partial unit requirements of International Standard IEC 60335-2-40, and must only be connected to other units that have been confirmed as complying to corresponding partial unit requirements of this International Standard.
  • Page 4 21.5 DB Cooling Operation Outdoor 43 DB * -5 DB * Indoor 25 DB 17 DB Heating Operation Outdoor 15.5 WB * -10 WB * DB: Dry Bulb, WB: Wet Bulb * The temperature may change depending on the outdoor unit. ● This manual should be considered as a permanent part of the air conditioning equipment and should remain with the air conditioning equipment. CHECKING PRODUCT RECEIVED ● Upon receiving this product, inspect it for any shipping damage. Claims for damage, either apparent or concealed, should be filed immediately with the shipping company. ● Check the model number, electrical characteristics (power supply, voltage and frequency) and accessories to determine if they are correct. The standard utilization of the unit shall be explained in these instructions. Therefore, the utilization of the unit other than those indicated in these instructions is not recommended. Please contact your local agent, as the occasion arises. HITACHI’s liability shall not cover defects arising from the alteration performed by a customer without HITACHI’s consent in a written form. A10762300A-rev.1...

  • Page 5: Table Of Contents

    TABLE OF CONTENTS 1. Safety Summary .............................1 2. Structure .................................6 2.1 Name of Parts ............................6 2.2 Refrigerant Cycle ............................7 2.3 Necessary Tools and Instrument List for Installation ................7 3. Before Installation ............................8 3.1 Combination of Outdoor Unit and Indoor Unit ..................8 3.2 Transportation and Handling ........................8 4. Indoor Unit Installation ............................9 4.1 Factory-Supplied Accessories ........................9 4.2 Initial Check ............................10 4.3 Installation ............................11 4.3.1 Position of Suspension Bolts ......................

  • Page 7: Safety Summary

    Safety Summary < Signal Words > ● Signal words are used to identify levels of hazard seriousness. Definitions for identifying hazard levels are provided below with their respective signal words. DANGER : DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury. WARNING : WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury. CAUTION : CAUTION, used with the safety alert symbol, indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. NOTICE : NOTICE is used to address practices not related to personal injury. NOTE : NOTE is useful information for operation and/or maintenance. A10762300A-rev.1...
  • Page 8 DANGER ● Do not perform the installation work, refrigerant piping work, drain pump, drain piping and electrical wiring connection without referring to our installation manual. If the instructions are not followed, it may result in a water leakage, electric shock or a fire. ● Use the specified refrigerant (R410A or R32) to the outdoor unit in the refrigerant cycle. Do not charge material other than R410A or R32 into the unit such as hydrocarbon refrigerants (propane or etc.), oxygen, flammable gases (acetylene or etc.) or poisonous gases when installing, maintaining and moving. These flammables are extremely dangerous and may cause an explosion, a fire, and injury. ● Do not pour water into the indoor unit. These products are equipped with electrical parts. If poured, it will cause a serious electrical shock. ● Do not open the service cover for the indoor or outdoor unit without turning OFF the main power supply. ● Do not touch or adjust safety devices inside the indoor unit or outdoor unit. If these devices are touched or readjusted, it may cause a serious accident. ● Refrigerant leakage can cause difficulty with breathing due to insufficient air. Turn OFF the main switch, extinguish any naked flames and contact your service contractor, if refrigerant leakage occurs. ● Make sure that a refrigerant leak test has been performed. Refrigerant (Fluorocarbon or Difluoromethane) for this unit is non-toxic, and odorless. If the refrigerant should somehow escape and come into contact with flame, toxic gas will form. This gas is heavier than air and will settle near floor areas and spread where it can cause suffocation to those nearby. In addition, difluoromethane is flammable and can cause fire. ● The installer and system specialist shall secure safety against refrigerant leakage according to local regulations or standards. ● Use an ELB (Earth Leakage Breaker). In the event of fault, there is danger of an electric shock or a fire if it is not used. ● Do not install the outdoor unit where there is high level of oil mist, flammable gases, salty air or harmful gases such as sulfur. ● For installation, firmly connect the refrigerant pipe before the compressor starts operating. For maintenance, relocation and disposal, remove the refrigerant pipe after the compressor stops. ● Do not perform a short-circuit of the protection device such as the pressure switch when operating. It may cause a fire and explosion.
  • Page 9 WARNING ● The installation work shall be performed by the specialist installer. If it is not completed, it may cause a water leakage, an electric shock, a fire or falling down the unit. ● Perform the electrical work according to Installation Manual and all the relevant regulation and standards. If the instructions are not followed, an electrical shock and fire may occur due to insufficient capacity and inadequate performance. ● The electrical wiring work must be performed by authorized installers. If not performing the electrical work completely or a capacity shortage of the power circuit, it may cause an electric shock or a fire. Additionally, if the earth wire is disconnected, it may cause an electric shock. Contact the authorized installer and connect the earth wiring. ● If the circuit breaker or fuse is often activated, stop the system and contact your service contractor. ● Check that the ground wire is securely connected. If the unit is not correctly grounded, it lead electric shock. Do not connect the ground wiring to a gas piping, water piping, lighting conductor or ground wiring for telephone. ● Use specified cables between units and choose the cables correctly. If not, an electrical shock or fire may occur. ● Ensure that the wiring terminals are tightened securely with the specified torques. If not, generating fire or an electrical shock at the terminal connection part may occur. ● Connect a fuse of specified capacity. ● Protect the wires, electrical parts, etc. from rats or other small animals. If not protected, rats may gnaw at unprotected parts and which may lead to a fire. ● Fix the cables securely. External forces on the terminals could lead to a fire. ● Provide a sufficiently strong foundation. If not, the unit may fall down and it may lead to injuries. ● If the indoor unit is installed in a small room and the refrigerant gas leakage occurs, the leaked refrigerant gas fills the room and it may cause suffocation. Do not exceed the maximum permissible concentration of the refrigerant gas in the room. Consult with distributor for countermeasure such a ventilation system, etc. ● Before performing any brazing work, check to ensure that there is no flammable material around.
  • Page 10 ● If abnormality (burnt odor, etc.) occurs, stop the operation and turn OFF the main power source immediately. If not, it may cause breakage of the product, an electric shock or a fire. Contact your distributor or contractor. ● Do not operate the indoor unit without the electrical box cover and the air inlet grille. It is unusually dangerous that the indoor fan and electrical parts are exposed. In addition, it may cause an electric shock due to touch the electrical parts. ● When the air conditioner is necessary to be repaired or relocated, contact your distributor or contractor. If the repair and the installation are not completed, it may cause an electric shock or a fire. ● Do not perform the installation work, the refrigerant piping work, the drain pump, the drain piping and electrical wiring connection without tuning OFF the main power source. It may cause an electric shock or injury. ● Perform the maintenance work with stable footing. If not, it may cause falling or injury. ● Do not spray water or detergent to the indoor unit when performing the maintenance work. It may cause an electric shock or a fire by electrical short-circuit. ● Protect securely the electrical parts and connectors not to splash water when performing the maintenance work. It not, It may cause an electric shock or a fire by electrical short-circuit. ● The inside piping charged refrigerant is high pressure. Perform securely the refrigerant piping work by the authorized installer. If not, it may cause a serious accident. NOTE Additional safety information for R32 refrigerant air conditioner and heat pump according to IEC 60335-2-40: 2018. Explanation of symbols displayed on the indoor unit or outdoor unit.
  • Page 11 CAUTION ● Do not step or put any material on the product. ● Do not put any foreign material on the unit or inside the unit. ● Do not turn OFF the main power source of the indoor unit during the season of heating and cooling. The water can not be discharged forcedly so that overflows from the drain pan. As the result, the floor and the ceiling surface are smudged. ● Hold the air filter and the air inlet grille by hand when attaching (removing). If not, it may cause falling or injury. ● Do not blow cold air to a person for a long time or overcool. It may cause deterioration of physical condition and health impairment. ● Do not handle the unit by one person. Although the unit may be packed by polypropylene band, do not use it for transportation. If the unit is handled by hand, the fin surface of heat exchanger causes a cut. NOTICE ● Do not install the indoor unit, outdoor unit, wired controller and cable within approximately 3 meters from strong electromagnetic wave radiators such as medical equipments. ● Supply electrical power to the system to energize the oil heater for 12 hours before startup after a long shutdown. ● Make sure that the outdoor unit is not covered with snow or ice, before operation. ● In some cases, the packaged air conditioner may not be operated normally under the following cases. * In case that electrical power for the packaged air conditioner is supplied from the same power transformer as the device*. * In case that the power source wires for the device* and the packaged air conditioner are located close to each other. Device*: (Ex) Lift, container crane, rectifier for electric railway, inverter power device, arc furnace, electric furnace, large-sized induction motor and large-sized switch. It consumes a large quantity of electrical power. Regarding the cases mentioned above, surge voltage may be inducted in the power supply wiring for the packaged air conditioner due to a rapid change in power consumption of the device and an activation of switch.

  • Page 12: Structure

    Heat Exchanger Distributor Strainer Micro-Computer Control Expansion Valve Electrical Control Box Refrigerant Gas Pipe Connection with fa Flare Nut Refrigerant Liquid Pipe Connection with fb Flare Nut Drain Pipe Auto Louver Motor Drain Pan Air Inlet Grille Air Filter Air Outlet Air Inlet Model RPC-1.5FSR 12.7 6.35 RPC-2.0FSR 12.7 6.35 RPC-2.5FSR 15.88 9.52 1270 1226 RPC-3.0FSR 15.88 9.52 1270 1226 RPC-4.0FSR 15.88 9.52 1580 1536 RPC-5.0FSR 15.88 9.52...

  • Page 13: Refrigerant Cycle

    2.2 Refrigerant Cycle Indoor Unit : Refrigerant Flow Direction (Cooling) : Refrigerant Flow Direction (Heating) : Field Refrigerant Piping : Flare Connection Refrigerant Gas Pipe Connection ( ) Refrigerant Liquid Pipe Connection ( ) Mark Part Name Heat Exchanger Distributor Strainer Micro-Computer Control Expansion Valve 1.5 and 2.0 2.5 to 6.0 A (Gas Pipe Connection) f12.7 x 0.8...

  • Page 14: Before Installation

    Before Installation 3.1 Combination of Outdoor Unit and Indoor (3) Push the side cover forward to remove the hooks and the hooking plate. Unit The combination capacity of indoor unit against Position for Fixing Screw the outdoor unit is selected by the outdoor unit capacity. Refer to the installation manual of outdoor unit and select the indoor unit and the Hooking Plate outdoor unit to be satisfied the combination unit number and the combination unit capacity. Hooks (3 Portions) 3.2 Transportation and Handling (4) Remove the side cover to lift upward. • When the indoor unit is unpacked, moved Do not put any material on the product. Do not and installed, do not take the air inlet grille, step on the product.

  • Page 15: Indoor Unit Installation

    Indoor Unit Installation 4.1 Factory-Supplied Accessories Check to ensure that the following accessories are packed with the indoor unit. Do not install the indoor unit in a flammable The hose clamp, screws, washers and cord clamps environment to avoid fire or an explosion. are put in the pipe insulation. ● Do not put any foreign material into the NOTE indoor unit and check to ensure that none • If any of these accessories are not packed with exists in the indoor unit before the installation the unit, please contact your contractor.

  • Page 16: Initial Check

    4.2 Initial Check • Consider the air distribution from the indoor unit to the space of the room, and select a suitable location so that uniform air temperature in the ● Check to ensure that the number of below room can be obtained. is within 0.3kg/m . Otherwise it may cause • Avoid obstacles such as electric light, partition danger situation if the refrigerant in the which may hamper the air inlet or the air outlet Outdoor Unit leaks into the room where this flow.

  • Page 17: Installation

    4.3 Installation • For the indoor unit with motion sensor, the detecting area for the motion sensor is shown in 4.3.1 Position of Suspension Bolts the figure below. (1) Determine the final location and installation < Detecting Area > direction of indoor unit with care to the space Example for 1.5 to 6HP indoor units for piping and wiring. (2) After the position of indoor unit is Depth 7m determined, make holes in the ceiling to install the suspension bolts. Floor-to- (3) The position of suspension bolts is shown Ceiling Detecting Area Detecting Area below. Height 2.7m 0.8m from Floor Level Upper Surface 1.8m...

  • Page 18: Installation Of Suspension Bolts

    4.3.2 Installation of Suspension Bolts (2) Hanging Indoor Unit < A. Hanging Indoor Unit (1) The structure of suspending part shall with Suspension Bracket > be strong enough. The ductor facilitates (a) Make holes in the ceiling for suspension suspending work. bolts. (2) Strengthen suspension bolts with support (b) Remove the side cover. plates for the earthquake resistant depending To remove the side cover, refer to the on the needs of the quakeproof. Apply M10 “Handling of Indoor Unit”. of suspension bolts and support plates for (c) Remove the suspension brackets the earthquake resistant. (Field-Supplied) attached to the indoor unit. < For Steel Beam > (d) Fix the suspension brackets to the suspension bolts. (4 portions) (e) Mount the indoor unit to the suspension brackets. (f) Tighten the 4 nuts and the fixing screw for suspension bracket.

  • Page 19: Installation Of Wired Controller

    < B. Hanging Indoor Unit without Suspension Bracket > (If there is not enough service space (4) Attach the side cover and the supporting between the ceiling and the indoor unit, hang string. the indoor unit by method A.) (5) Remove the protection film attached to the (a) Determine the position to install the louver surface. suspension bolt. (6) Remove the protection tape attached to the (b) Fix the washer and nut to the suspension air inlet filter. bolt. (c) Mount the indoor unit to the suspension bolts. Suspension Bolt (Field-Supplied) 4.3.4 Installation of Wired Controller Nut (Field-Supplied) The installation of wired controller shall be Washer (Field-Supplied) performed according to the installation manual of itself.

  • Page 20: Refrigerant Piping Work

    For the refrigerant piping work, vacuum pump and refrigerant charge, the details shall be referred to “Installation & Maintenance Manual” of the outdoor unit. 5.1 Piping Materials (1) The tolerance of refrigerant piping length differs depending on the combination with the outdoor unit. The details shall be referred to “Installation & Maintenance Manual” of the outdoor unit. (2) Select the piping size from the following table. mm (in.) Model Gas Piping Liquid Piping RPC-1.5FSR f12.7 (1/2) f6.35 (1/4) RPC-2.0FSR RPC-2.5FSR RPC-3.0FSR RPC-4.0FSR f15.88 (5/8) f9.52 (3/8) RPC-5.0FSR RPC-6.0FSR (3) Prepare field-supplied copper pipes. (4) Select clean copper pipes. Make sure there is no dust and moisture inside. (5) The refrigerant lubricating oil used in these units is Polyvinylether (PVE), a chemically stable, resilient, synthetic lubricant that, when combined with refrigerant R410A or refrigerant R32, maintains its compatibility, lubricity, and viscosity over extended periods of time and is impervious to heat, oxidation, moisture absorption and breakdown as long as it remains in a sealed system. Its chemical properties will remain intact only so long as moisture is not introduced into the system.

  • Page 21: Piping Connection

    5.2 Piping Connection Cap (Rear Side) 5.2.1 Position of Pipe Connection 146 (Liquid Pipe) The piping connection is performed inside 94 (Gas Pipe) the indoor unit. The pipe connection can be performed from 3 directions, rear, right and upper. For rear and upper pipe connection, the plastic cap is attached at knockout hole for the refrigerant pipe and the drain pipe. Cut out the knockout 147 (Drain Pipe) hole of cap for piping and attach the cap again after running the refrigerant pipe through the cap. Drain Pipe Connection (VP20, left side) < Hole Position and Size > Drain Pipe Connection (VP20, right side) Ceiling φ130 View from Front Right End of Indoor Unit 205 (Gas Pipe)

  • Page 22: Piping Connection

    5.2.2 Piping Connection (2) Perform the flaring work as shown below. (1) Open the air inlet grille and perform the +  2   connecting work from lower side. mm (in.) (a) Press and slide the cover of the air inlet Diameter grille in the direction of the arrow with -0.4 fingers in the holes on the cover. 6.35 (1/4) 9.52 (3/8) 13.2 0.4 ~ 0.8R 12.7 (1/2) 16.6 15.88 (5/8) 19.7 (3) Use specific flare nut. Holes (4) Check that there are no scratch, chip, (2 or 3 Portions) deformation, gap or at the flaring part.
  • Page 23 (6) When on-site piping with joint such as elbow, socket is buried, provide a service access door to facilitate the check for connecting ● Do not apply excessive force to the flare nut part. when tightening. If applied, the flare nut may (7) Perform to support for earthquake resistant crack due to aged degradation and refrigerant to the pipes in order not to damage by an leakage may occur. external force. Use the specified tightening torque. (8) Do not clamp tightly the refrigerant pipe ●...

  • Page 24: Refrigerant Piping For R32

    5.2.3 Refrigerant Piping for R32 (1) Refrigerant piping length between indoor unit and Refrigerant Amount Minimum Area outdoor unit (kg) 1.84 2.14 The unit installation and refrigerant piping should comply with the relevant local and national regulations for the 2.29 designed refrigerant. 2.53 2.79 Due to R32 refrigerant and depending on final refrigerant charge amount, a minimum floor area for installation 3.06 must be considered. 3.35 ● If total refrigerant charge amount < 1.84kg, there are 3.65 no additional minimum floor area requirements. 3.96 4.28 ● If total refrigerant charge amount ≥ 1.84kg, there are additional minimum floor area requirements to be 4.61 checked. 4.96 5.32 5.70 6.08 6.48 6.89 7.32 7.75 (2) Minimum area requirements In case of total refrigerant amount ≥ 1.84kg, the unit should be installed, operated and stored in a room with a floor area larger than the minimum criteria. Use following graphic and table to determine these...

  • Page 25: Drain Piping

    Drain Piping Perform the drain piping work after connecting the < For Left Side Drain Piping > refrigerant pipes and attaching insulations. Left Side Cord Clamp Insulation Do not insert the drain pipe for the indoor unit Drain Plug to the drainage trench where corrosive gases occur. Poisonous gases flow into the room, so Drain Pan that may cause the poisoning. Remove the drain plug.
  • Page 26 (3) Connecting Drain Piping (4) After the drain piping work is completed, check that water flows smoothly by pouring (a) Prepare a polyvinyl chloride pipe with a water into the drain pan by hose. 26mm outer diameter. (VP20 (based on JIS K6741) is recommended.) NOTE: (b) When the drain hose is used, do not The optional drain-up mechanism is required create rising part or twist. when the drain piping is connected from (c) Insulate surely the polyvinyl chloride pipe the upper surface of indoor unit. The after connecting. details shall be referred to Installation (d) Tighten the hose clamp after surely & Maintenance Manual of the drain-up inserting the polyvinyl chloride pipe. mechanism. (e) The drain pipe must be performed with a down-slope pitch of 1/25 to 1/100. Insulation (Accessory) (f) Wrap the insulation (accessory) around the hose clamp to cover drain hose, drain pan, hose clamp without gap. NOTES: Hose Clamp * Do not connect the drain pipe with sanitary or sewage piping or any other drainage piping.

  • Page 27: Electrical Wiring

    Electrical Wiring ● The electrical wiring work must be performed ● Wrap the accessory packing around the by authorized installers. If not, it may cause wires, and plug the wiring connection hole an electric shock or a fire. with the seal material to protect the product ● Perform the electrical work according to from any condensate water or insects.

  • Page 28: Electrical Wiring Capacity

    (B) Check to ensure that the stop valves of the outdoor unit are fully opened, and then start the system. (C) Check to ensure that the switch on the main power source has been ON for more than 12 hours, to warm the compressor oil by the crankcase heater. • 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 90 Power Source Cable Size Transmitting Cable Size Power Maximum Model Source Current IEC 60335-1 *1 MLFC *2 IEC 60335-1 *1 MLFC *2 RPC-1.5FSR RPC-2.0FSR RPC-2.5FSR 220-240V/1f/50Hz RPC-3.0FSR 0.75mm 0.5mm 0.75mm 0.5mm 220V/1f/60Hz RPC-4.0FSR RPC-5.0FSR RPC-6.0FSR NOTES: 1) Follow local codes and regulations when selecting field wires. 2) The wire sizes marked with *1 in the above table are selected at the maximum current of the unit according to the European Standard, IEC 60335-1. Use the wires which are not lighter than the ordinary tough rubber sheathed flexible cord (code designation H05RN-F) or ordinary polychloroprene sheathed flexible cord (code designation H05RN-F). 3) The wire sizes marked with *2 in the above table are selected at the maximum current of the unit according to the wire, MLFC (Flame Retardant Polyflex Wire) manufactured by Hitachi Cable Ltd., Japan.

  • Page 29: Details Of Electrical Wiring Connection

    7.2.2 Details of Electrical Wiring Connection The electrical wiring capacity of the outdoor unit should be referred according to “Installation & Maintenance Manual” of the outdoor unit. Setting Dip Switch may be required depending on the combination with the outdoor unit. NOTE: When installing the unit in Australia, connect the both ends of shielded twist pair cable (controller cable and control cable) to the earth. (Refer to the item 7.3 (8) for details.) (1) For UTOPIA Series Select wiring capacity according to the table 7.1. Install the ELB and the main switch to each as shown in the following figures. Use CASE B method wiring for Australia. The control cable length between the outdoor unit and the indoor unit shall be less than 75m. < Case A > Power Source Type: 3 Phase 4 Wires Power Source Type: 3 Phase 3 Wires Wired Wired Controller Controller Controller Cable Controller Cable (Option) (Option) 220V / 50Hz...
  • Page 30 < Case B > ● Wiring Connection (Single Indoor Unit) Power Source Type: 3 Phase 4 Wires < 3f 380-415V/50Hz > 220-240V / 50Hz 380V-415V / 50Hz (3N~) *1, *2 Wired Controller (Option) Main Main Switch Switch Outdoor Unit Indoor Unit L2L3 N Earth Wiring Controller Cable Refer to “Installation & Maintenance Manual” of connected outdoor unit Control Cable (Field-Supplied) Power Source Cable...
  • Page 31 ● Wiring Connection (Twin, Triple and Quad Combinations for Simultaneous Operation) For following wiring connection, turn OFF No.1 pin at DSW6. Refer to “Installation & Maintenance Manual” of outdoor unit for details. Power Source Type: 3 Phase 4 Wires < 3f 380-415V/50Hz > 220-240V / 50Hz 380V-415V / 50Hz (3N~) *1, *2 Wired Controller (Option) Main Main Switch Switch Outdoor Unit Indoor Unit No.1 Indoor Unit No.2 Indoor Unit No.3 Indoor Unit No.4 L2 L3 N Earth Wiring Pull Box Pull Box...
  • Page 32 ● Wiring Connection (Twin, Triple and Quad Combinations for Individual Operation) Power Source Type: 3 Phase 4 Wires < 3f 380-415V/50Hz > 220-240V / 50Hz 380V-415V / 50Hz (3N~) *1, *2 Wired Wired Wired Wired Controller Controller Controller Controller (Option) (Option) (Option) (Option) Main Main Switch Switch Outdoor Unit Indoor Unit No.1 Indoor Unit No.2 Indoor Unit No.3 Indoor Unit No.4 L2 L3 N Earth...
  • Page 33 Table 7.1 Recommended Wiring Capacity and Size for UTOPIA Series Model Main Switch Wiring Capacity (mm Transition Wiring Transition Rated Rated Fuse Power between O.U. and I.U. Wiring Current Current Capacity Source Earth Controller between Power Cable Wiring Cable Combination Control Indoor Supply Circuit Units Indoor Indoor Indoor Indoor < 20m Single Type 0.75 0.75 Twin, Triple, Quad 0.75 ELB: Earth Leakage Breaker I.U.: Indoor Unit O.U.: Outdoor Unit...
  • Page 34 Capacity *1) < 7A 2 Core <10A Cable 0.75 0.75 ~ 1.25 < 15A ELB: Earth Leakage Breaker *1): The above wiring line length shows the case that the indoor units are connected in series. (The voltage drop is within 2%.) When the power source wiring is longer than the above value, select the minimum wiring size which the voltage drop is within 2%. NOTICE ● Check the recommended size of the ELB shown in Table. Select high-sensitive high speed ELB when the rated sensitive current is less than 30mA. (The motion time should be within 0.1 second.) ● Use 2 core cable (equivalent to following cables: VCTF, VCT, CVV, MVVS, VVR or VVF, size: 0.75mm to 1.25mm (manufactured by HITACHI Cable Co. Ltd.)) or 2 core twist pair cable (equivalent to following cables: KPEV or KPEV-S (manufactured by HITACHI Cable Co. Ltd.)) for the control cable between the outdoor unit and the indoor unit. The total cable length should be less than 1000m. ● Use 2 core twist pair cable (equivalent to following cables: KPEV or KPEV-S) for the controller cable and the control cable between indoor units. The total cable length should be less than 500m. If the total length of the cable is less than 30m, other cables can be used (the cable size is 0.3mm ● Select the wiring size, ELB (Earth Leakage Breaker) and isolating switch according to each regulation of region and “Installation & Maintenance Manual”, and the dedicated electrical circuit must be used. ● On the outside indoor unit, the power source cable, control cable and controller cable shall be installed separately as possible. A10762300A-rev.1...

  • Page 35: Position Of Electrical Wiring Connection

    7.3 Position of Electrical Wiring Connection ● Do not connect the main power source cables to the control line (Terminals A, B, 1 and 2 of TB2). ● Tightly secure wirings to the terminal If connected, the printed circuit board (PCB) will block according to the specified torque. If be broken. tightening the terminals is not completed, ● Pay attention to followings when wires are heat generation, an electric shock or a fire connected to terminal block. will occur at the terminal connection. (A) Attach an insulation tape or a sleeve to each ● Make sure that the wires are securely fixed terminal.
  • Page 36 (9) The wiring work for the indoor unit should be (c) Simultaneous Operation performed according to the electrical wiring (The indoor unit is H-LINK II model.) diagram and “Installation & Maintenance Manual” of the outdoor unit. Indoor Unit Outdoor Unit Indoor Unit (10) In Case that Power Source (220V / 240V) Is Applied to Control Line If 220V / 240V is applied to the control line l The simultaneous (Terminal 1 and 2 of TB2) due to mistake, Wired operation is available PCB1 Controller the fuse on the PCB for the control line will up to 4 indoor units. DSW6 blow out. In this case, perform the recovery work as shown in the below. (a) Reconnect the wirings correctly. Set No.1 Pin (b) Set No.1 pin of DSW7 (on PCB) at ON at OFF side. side. T This indoor unit is adopted four (4) steps of fan PCB is recovered from the fuse blowing out.
  • Page 37 (c) Connecting Wired Controller in Case of Connecting between Refrigerant Cycles Indoor Unit Indoor Unit Indoor Unit Indoor Unit Outdoor Unit Outdoor Unit Wired Wired Wired Controller Controller Controller Individual Individual Simultaneous (Thermo ON / OFF individually) (12) Attach the ring core (black) (accessory) when installing PC-ARF1 wired controller. [Procedure] Insert the controller cable into the ring core 2 turns as shown in the below figure before connecting to the terminal block. Fix the cable by using the band (accessory). Band Controller Cable Ring Core ● The Dip Switches setting in the outdoor unit should be performed according to “Installation &...

  • Page 38: Transition Wiring For Wired Controller

    7.4 Transition Wiring for Wired Controller In the twin, triple, and quad combination of indoor units, the transition wiring for the wired controller is not required. However, when connecting indoor units without transition wiring for wired controller, the followings are limited. Power Source Wiring (1) The following functions are available to set only to the main unit with the wired controller PC-ARF1. * “Remote ON/OFF function, 1 and 2" * “Power supply ON/OFF function, 1 and 2" * “Prohibiting operation by wired controller” Transition wiring is unnecessary. Wired Controller (PC-ARF1) (2) The following connection is NOT available. (a) Connection between Main Units without Transition Wiring When the indoor units in multiple refrigerant cycles are controlled by one wired controller, all the indoor units are required to be connected with the transition wirings. Main Main Main Main Incorrect Correct (b) Connection between Main Unit without Transition Wiring and Unit with Transition Wiring When the indoor units in multiple refrigerant cycles are controlled by one wired controller, all the indoor units are required to be connected with the transition wirings. Main Main Main Main Incorrect Correct (c) Connecting Wired Controller to Sub unit without Transition Wiring...
  • Page 39 (d) Connecting to Wall Type Indoor Unit with Receiver The transition wiring is required when the wall type indoor unit (with receiver) is connected. Main Main Wall Type Wall Type Incorrect Correct (3) The address of indoor unit can not be changed from the wired controller. (4) This indoor unit is adopted four (4) steps of fan speed (HIGH 2, HIGH, MED and LOW). When it is installed with three (3) steps of fan speed type, connect the wired controller to four (4) steps of fan speed type. If not, “HIGH 2” will not be indicated and can not be selected. The wired controller PC-ARF1 or PC-AWR with PC-ALHP1 must be used. (5) In the case of connecting the centralized controller, the followings are limited. If they are utilized without following limitations, the operation is not run correctly. Name Model Restrictions PSC-A64S PSC-5S Central Station PSC-A64GT PSC-A32MN Central Station DX PSC-A128WX2 Centralized ON/OFF Controller PSC-A16RS Central Station NT PSC-A128WEB3 Central Station EX PSC-A128EX HARC70-P1 HARC70-P1 When the condition of the indoor unit which is not connected to the wired controller is checked on the centralized controller, the indication is always HARC-BX...

  • Page 40: Cautions For Individual Louver Setting

    7.4.1 Cautions for Individual Louver Setting (1) The individual louver setting is available up to 16 indoor units by one wired controller. The connection more than 17 indoor units are not available. Individual Louver Individual Individual Individual Individual Louver Louver Louver Louver Wired Controller (PC-ARF1) Maximum 16 Indoor Units (2) The individual louver setting in the same refrigerant cycle are available up to 4 indoor units without the transition wiring for the wired controller. Individual Individual Individual Individual Louver Louver Louver Louver Wired Controller (PC-ARF1) NOTE: When the individual louver is set, the indoor unit shall be seen from the place of the wired controller. In the case of connecting the multiple indoor units, pay attention to the positional relationship between wired controller and the indoor units. (3) This “Individual Louver Setting” is NOT available with 2 (two) wired controllers.

  • Page 41: Cautions For Motion Sensor Kit (Sor-Nep)

    7.4.2 Cautions for Motion Sensor Kit (SOR-NEP) (1) The motion sensor can be connected up to 16 indoor units by one wired controller (PC-ARF1). The motion sensor will be activated even if it is installed without motion sensor. (2) When the multiple indoor units with motion sensor are controlled by one wired controller (PC-ARF1), the transition wiring for wired controller is required to all the indoor units. If not, the indoor units with motion sensor will not be activated. with Motion with Motion with Motion with Motion Sensor Kit Sensor Kit Sensor Kit Sensor Kit Transition Wiring for Wired Controller Wired Controller (PC-ARF1) (3) In the case that 2 wired controllers are connected, the motion sensor can be set on only the main wired controller. The sub wired controller is for the indication only. with Motion with Motion Sensor Kit Sensor Kit Wired Controller...
  • Page 42 < Use Conditions and Precaution Statements > (1) The motion sensor detects the change of the infrared light. Therefore, it may detect the moving objects such as small animals which are difference in temperature against atmosphere. Additionally, it may detect as absence in the case of staying for long time with a bit motion or a rapid motion. DO NOT install the motion sensor (SOR-NEP) in the following places. It may cause misdetection, undetectable of motion or the deterioration of the motion sensor. * Places where ambient temperature changes drastically. * Places where excessive force or vibration is applied to the motion sensor. * Places where static electricity or electromagnetic waves may generate. * Places where is interference for infrared light such as glasses or mist in a detecting area. * Places where the lens for motion sensor is exposed in high temperature and humidity for a long time. * Places where fluid and corrosive gas exist. * Places where direct lights such as sunlight or headlight affect the motion sensor. * Places where hot air from a heater, etc. affects directly the motion sensor. * Places where the air flow returns to the motion sensor by hitting obstacles such as shelf, locker, etc. * Places where the blower devices such as ceiling fan, ventilating fan, etc. affect the air flow from the indoor unit. * Places where weather affects directly the surface of the motion sensor. * Places where the lens surface may smudge or be damaged such as a dusty environment. Pay attention that the detecting function will be decreased if the lens for motion sensor smudges. In this case, wipe off smudges by a cotton swab soaked alcohol (Isopropyl alcohol is recommended.) or a soft cloth. (When wiping off smudges on the lens for motion sensor, do not apply excessive force. If excessive force is applied, the resin lens may be damaged so that may cause malfunctions such as misdetection or undetectable of the motion.) (2) Do not run the wiring for motion sensor and the power source wiring in parallel. (3) The motion sensor detects the human activity. Therefore, if the human activity is small, the detecting area becomes smaller. Additionally, it may detect as absence even if some is in a room.

  • Page 43: Caution For Electrical Wiring

    7.4.3 Caution for Electrical Wiring Do not fix the power source wire and the control wire to one terminal together. The pull box is required when the transition wiring is required. Indoor Unit Indoor Unit Indoor Unit Indoor Unit Indoor Unit Indoor Unit Pull Box A10762300A-rev.1...

  • Page 44: Wiring Connection

    7.5 Wiring Connection (d) After the wiring is completed, attach the electrical box cover again with care in (1) The wiring connection for the indoor unit is order not to bite wires. shown in the figure below. Wire for Fan Motor Upper Side Wire Connection Rear Side Wire Connection Tightly clamp wires by the cord clamp after the (2) The wiring connection for electrical box is as wiring is completed to the terminal block. If not follows.

  • Page 45: Function Selection By Wired Controller

    (4) Capacity Code Setting (DSW3) NOTE No setting is required, due to setting before shipment. This switch is utilized for setting ● The “n” mark indicates position of dip switches. the capacity code which corresponds to the Figures show setting before shipment. Horse Power of the indoor unit. ● When the unit number and the refrigerant cycle are set, record the unit number and refrigerant Horsepower cycle to facilitate maintenance and servicing activities thereafter. Setting Position 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 Horsepower Turn OFF all the power supply of the indoor unit Setting...

  • Page 46: Test Run

    Test Run (3) Check to ensure that each wire is correctly connected at the power source. If incorrectly Test run should be performed according to this connected, the unit will not operate and manual and “Installation & Maintenance Manual” of the wired controller will indicate the alarm the outdoor unit. code “05”. In this case, check the phase Do not operate the system until all the check points of the primary power source according to have been cleared. the attached attention label on the rear side of the service cover. Then, perform the reconnection work correctly with turning OFF the power supply. ● Check to ensure that the electrical resistance (4) Check to ensure that the main power source is more than 1 megohm, by measuring the has been turned ON for more than 12 hours, resistance between ground and the terminal to warm the compressor oil by the crankcase of the electrical parts.
  • Page 47 2) The total number of the indoor units (c) Check to ensure that the motion sensor is connected is indicated on the LCD operated correctly as following procedures (Liquid crystal display). The case of the (in the case of the lower cover with the twin combination (one (1) set with two motion sensor). (2) indoor units) is indicated “2 units”, 1) Press and hold “Menu” and “Back/Help” and the triple combination (one (1) set simultaneously for at least 3 seconds with three (3) indoor units) is indicated “3 during the test run mode. The check units”. menu screen “A” is displayed. “A” Test Run Setting: 2 units Check Menu MODE COOL Check 1 SPEED AUTO Check 2 Alarm History Display Model Display Function 5 Sel.
  • Page 48 4) Press “ ” to change the screen until (d) The temperature detections by the indicating the check screen “q1”. thermistors are invalid though the 5) Perform the motion detection (waving a protection devices are valid during the test hand, etc) under the motion sensor of run. the indoor unit selected with for approx. (e) SET FREE Series: 10 to 15 seconds. According to the label “Checking of 6) Check the value of “q1” after 30* Outdoor Unit by 7-Segment Display on seconds from starting the motion PCB1” attached to the rear side of the detection at item 5). The detecting front cover of the outdoor unit, check information of the motion sensor against temperature, pressure and the operation the motion detection is indicated with frequency, and connected indoor unit the range of 0% to 100%. numbers by 7-segment displays. (f) To finish the test run, press “ On/Off” *1: The transmission between the indoor unit and the wired controller is 30 seconds again or pass over the set test run time. cycle. The timing of the motion detection When changing the test run time, press and the detected information display is “ ” or “ ” to select “Test Time”. Then, set shown in the figure below.
  • Page 49 • The run indicator on the wired controller flashes when some abnormalities such as protection devices activated, etc occur during the test run. In addition, the alarm code, the unit model code and connected number of indoor units will be displayed as shown in the figure below. If flashing RUN indicator for 2 seconds, it may be a failure in the transmission between the indoor unit and the wired controller (loose connector, disconnecting wiring or breaking wire, etc). In this case, Check the alarm (abnormality) code table shown in the next page and perform for troubleshooting. Consult to authorized service engineers if abnormality can not be recovered. 01-02 Alarm Code: Chek MODEL : F .02 AlarmRst I.U. : RCI-3.0FSN3 : ****** Address : ****** O.U. : RAS-3HVRNM2 Sel. OP MODE Entr Refrigerant Cycle No.
  • Page 50 Alarm (Troubleshooting) Code Table Code Category Nature of Problem Likely Cause Activation of a protection device Activation of the float switch; (High water level present in Indoor Unit (Float switch) the drain pan.) A problem exists in the piping. Activation of protection device; High Pressure Cut; (R410A: (4.15MPa)), fan motor lockup Outdoor Unit (Except for Alarm Code: 41, 42) during the outdoor unit cooling operation. Communication failure between Incorrect wiring, loose terminals, disconnected wiring or a Communication indoor and outdoor units blown fuse. 04-09 Problem with the outdoor unit; (Refer to the "Installation and Maintenance Manual" for outdoor units.) Inlet Air Thermistor failure Outlet Air Thermistor failure Sensor on Loosely connected, disconnected, or a severed Indoor Unit connection. Freeze Protection Thermistor failure Gas Piping Thermistor failure Fan motor lockup, fan motor protection control device for Fan Motor Problem with Indoor Fan indoor unit activated. 20-29 Problem with the outdoor unit; (Refer to the "Installation and Maintenance Manual" for outdoor units.) Incorrect capacity setting for indoor Incorrect capacity code setting for combination, excessive and outdoor units. or insufficient total indoor unit capacity code. Incorrect setting of other indoor unit Problem with a different Indoor Unit in the same refrigerant cycle; (Failure at the power supply, defective PCB).

  • Page 51: Safety And Control Device Setting

    All the installation work of the air conditioning is completed. Handover this information to the building owner and request to maintain all the equipment manuals and warranty. Refrigerant Leak Check Conduct a periodic refrigerant leak check to maintain product performance and secure storage of refrigerant. After completing installation, record the following results into this "Installation and Maintenance Manual": 1. Results of a test for air-tight integrity 2. Total refrigerant charge volume dispensed (including a trim charge added following the installation) 3. Result of the refrigerant leak check Then hand it over to users and ask them to retain for reference. All periodic service and maintenance procedures must be conducted only by authorized and trained personnel. Safety and Control Device Setting Indoor Unit RPC-1.5FSR, RPC-2.0FSR, RPC-2.5FSR, RPC-3.0FSR, Model RPC-4.0FSR, RPC-5.0FSR, RPC-6.0FSR For Evaporator Fan Motor Thermostat Cut-Out Cut-In For Control Circuit Fuse Capacity Freeze Protection Thermostat Cut-Out Cut-In Thermostat Differential All the installation work of the air conditioning is completed. Deliver and describe to keep this “Installation & Maintenance Manual” to a user.
  • Page 52 © 2020 Hitachi-Johnson Controls Air Conditioning, Inc. A10762300A-rev.1, 2020 Printed in Japan...

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