AquaFREE System. Technical Catalogue. Outdoor units: RAS-(3~5)HVRNE RAS-(4/5)HRNE. Indoor units: RWM-(3~5)FSN1E RWM-(3~5)FSN1E-(4.

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1 AquaFREE System Technical Catalogue Outdoor units: RAS-(3~5)HVRNE RAS-(4/5)HRNE Indoor units: RWM-(3~5)FSN1E RWM-(3~5)FSN1E-(4.5/6)H(1/3)

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3 Specifications in this manual are subject to change without notice in order that HITACHI may bring the latest innovations to their customers. Whilst every effort is made to ensure that all specifications are correct, printing errors are beyond Hitachi s control; Hitachi cannot be held responsible for these errors.

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5 Content C o n t e n t Benefits of AquaFREE General data Dimensional Data Capacities and selection data Working Range Refrigerant Cycle Piping and refrigerant charge Electrical data Electrical wiring and setup Remote control switches Available optional functions Troubleshooting page

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7 Contents Contents (Cont.) 1. Benefits of AquaFREE Choice benefits Selection Range Options and accessories Adaptable to customer needs Benefits from the point of view of Installation Compact Size Long piping length Easy installation and maintenance Easy and flexible communication installation Benefits from the start-up point of view Easy start-up Service checking tool Benefits from the point of view of functionality Designed for maximum comfort Easy to use High efficiency system Wide range of temperatures Benefits from the point of view of maintenance High reliability Designed for easy maintenance Main features of the elements that make up the AquaFREE module Main features of the H(V)RNE outdoor units High efficiency cooling circuit Highly efficient scroll compressor Noise reduction General data Indoor units RWM Aqua Free (Basic Models) RWM Aqua Free (Models with electrical resistance) Outdoor units RAS DC Inverter Main Component Data for Indoor Units RWM Aqua Free (Basic Models) RWM Aqua Free (Models with electrical resistance) Main Component data for Outdoor Units RAS DC Inverter Dimensions Data Indoor units Water Free - (Basic models with resistance) Outdoor units RAS - DC Inverter pag. 7

8 Contents Contents (Cont.) 4. Capacities and selection data Choosing your AquaFREE system How to use the data in this chapter Example of choosing units by heating load Example of selecting cooling load Capacity in heating mode Capacity in cooling mode Capacities and electrical power consumption Refreshing Floor/Heating Floor Fan coil/radiators Correction factors for piping length Noise data Working range Power supply Temperature range Refrigerant cycle Refrigerant cycle between the RWM unit and the RAS unit The RWM unit is connected to heating floor or to a radiator (low temperature)/fan-coil Piping, refrigerant load and water Refrigerant piping range Refrigerant piping length Refrigerant piping selection Amount of refrigerant loaded Caution in case of refrigerant leakage Maximum permissible concentration of HCFC Gas Calculation of Refrigerant Concentration Countermeasure in the event of refrigerant leakage according to the KHK Standard Hydraulic circuit Installation procedures Water piping length Setting the water flow Selecting the water pipe Electrical data Indoor units Outdoor units pag. 8

9 Contents Contents (Cont.) 9. Electrical wiring and set-up General verification Setting and function of DIP switches for outdoor units Setting and function of dip switches for AquaFREE indoor units: Main PCB Control PCB Boiler combination kit settings Setting the selection switch to set the options Common wiring between the AquaFREE module, the outdoor unit, the boiler combination kit and the boiler Electrical connection between AquaFREE and the boiler combination kit Remote Controls Switches Remote control switch (CTA IMH RF A) Liquid Crystal Display (L.C.D) Section Control keyboard Connection between the receiver (AquaFREE) and the PRT Language selection Setting the current date and time Operating mode selection Automatic mode setting PRT parameters - Setting operation to heating/cooling mode Setting temperature (Temperature 1, Temperature 2) for automatic mode Holiday mode setting Available optional functions Available optional functions for outdoor units Troubleshooting Remote control alarm code display: Alarm codes pag. 9

10 Contents MODEL CODIFICATION List of AquaFREE modules, outdoor units and accessories available in this technical catalogue AquaFREE (Basic Models) AquaFREE MODULES AquaFREE (Models with electrical resistance) Unit Code Unit Code Unit Code RWM-3FSN1E RWM-3FSN1E-4.5H RWM-4FSN1E RWM-4FSN1E-6H RWM-4FSN1E-6H RWM-5FSN1E RWM-5FSN1E-6H RWM-5FSN1E-6H RWM 1~ 1~ 3~ Unit type (indoor unit): RWM RWM-5FSN1E-6H1 Capacity (CV): Refrigerant: 410A Series E: Made in Europe Electrical power supply: 1~ 230V 50Hz 3N~ 400V 50Hz Model with electrical resistance: kw pag. 10

11 Contents OUTDOOR UNITS Utopia DC Inverter Unit Code Unit Code Unit Code RAS-3HVRNE 7E RAS-4HVRNE 7E RAS-4HRNE 7E RAS-5HVRNE 7E RAS-5HRNE 7E RAS- 1~ 3~ Unit type (outdoor unit): RAS RAS-5HVRNE System: Utopia (Heat/Cold) Capacity (CV): Compressor type: DC-Inverter E: Made in Europe -: Made in Japan Refrigerant: 410A Electrical power supply: 1~ 230V 50Hz 3N~ 400V 50Hz LIST OF ACCESSORY CODES Accessory Name Code Figure DBS-26 Drain discharging connection AF-BCK-01 Boiler Combination Kit (Boiler Combination Kit) NEW AF-DPK-WH Drain Pan Kit (Drain Pan Kit, Fan-coil accessory) (For AquaFREE unit with support resistance) 7E NEW AF-DPK-NH Drain Pan Kit (Drain Pan Kit, Fan-coil accessory) (For AquaFREE unit without support resistance) 7E NEW pag. 11

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13 System Description I n t r o d u c t i o n : S y s t e m D e s c r i p t i o n System description HITACHI s AquaFREE system is a Heat pump heating system for winter, and a cooling system for summer. The system consists of an Inverter Heat Pump outdoor unit and a hydraulic module indoor unit. The heat pump absorbs or sends heat to the outside, and transfers it to the water circuit through the AquaFREE module. The AquaFREE air-conditioning system incorporates a set of technical benefits that make it one of the most attractive on the market. Right from the selection of the ideal type of equipment in each case, up to its maintenance, and through installation, startup and operation, AquaFREE always provides the best solution for every user, and greatly simplifies and eases the user s selection process. AquaFREE systems provide great comfort, high reliability, rigorous design, low electrical consumption, and a small installation space. The AquaFREE system is made up of the following units: H(V)RNE outdoor units with the following capacity: RAS-(3~5)HVRNE RAS-(4/5)HRNE Indoor units with or without support resistance: RWM-(3~5)FSN1E RWM-(3~5)FSN1E-(4.5/6)H(1/3) Main features of the system. Types of Applications: Heating floor, radiators/fan-coil heaters, hybrid systems: radiators + heating floor, and radiators + fan-coil. Large variety of indoor units with or without support resistance. Flexible installation, outdoor unit may be placed at a distance of up to 30m. By combining with a BCK (boiler combination kit), it is possible to combine with an existing boiler to optimize electrical power consumption. pag 13

14 System Description Uses R410A refrigerant They use R410A refrigerant. Hitachi Set Free units are environmentally-friendly because they use R410A refrigerant, and the RoHS and green dot regulations are applied during the assembly process. This shows that Hitachi is acutely aware and respectful of the environment. R410A is totally environmentally-friendly since it does not contain any substances that are harmful to the ozone layer, ODP (Ozone Depleting Product) =0. Refrigerant Highly efficient Hitachi AquaFREE units are highly efficient and allow important energy savings compared to conventional systems. These energy savings also mean that less CO 2, which causes the greenhouse effect, is produced. pag 14

15 Benefits of AquaFREE 1. B e n e f i t s o f A q u a F R E E This chapter describes the features and benefits of the new AquaFREE series. The flexibility and modularity of the systems offer you a complete solution for your air conditioning requirements. Contents 1 1. Benefits of AquaFREE Choice benefits Selection Range Options and accessories Adaptable to customer needs Benefits from the point of view of Installation Compact Size Long piping length Easy installation and maintenance Easy and flexible communication installation Benefits from the start-up point of view Easy start-up Service checking tool Benefits from the point of view of functionality Designed for maximum comfort Easy to use High efficiency system Wide range of temperatures Benefits from the point of view of maintenance High reliability Designed for easy maintenance Main features of the elements that make up the AquaFREE module Main features of the H(V)RNE outdoor units High efficiency cooling circuit Highly efficient scroll compressor Noise reduction...26 pag 15

16 Benefits of AquaFREE Selection benefits: 1.1. Choice benefits Selection Range Range of Outdoor units The H(V)RNE outdoor unit series range allows 3~5 CV units to be selected for single as well as three-phase combinations. The H(V)RNE units are very efficient and silent. The combination of the scroll compressor and the inverter type continuous control allow a high level of efficiency as well as important noise reduction as compared to conventional units. Outdoor units Capacity (HP) UTOPIA DC-INVERTER RAS-H(V)RNE AquaFREE module The AquaFREE module range allows a wide range of possibilities depending on the application chosen Single-phase and three-phase units, with or without electrical resistance, as shown in the following table: Modules Capacity (HP) AquaFREE MODULE AquaFREE + Electrical resistance (3~) AquaFREE + Electrical resistance (1~) Basic AquaFREE (1~) RWM- FSN1E-H3 RWM- FSN1E-H1 RWM -FSN1E Main Features: AquaFREE units have minimal dimensions and a low noise level. pag 16

17 Benefits of AquaFREE Selection benefits: Options and accessories The AquaFREE system has a series of options and accessories to improve the installation and make it more flexible depending on the required needs. Electrical Resistances They are support resistances that are used to increase the temperature of the water under very extreme outdoor conditions, such as low temperatures. They can be single or three-phase. The adjustment of these resistances depends on the needs of each installation. They can be adjusted using a single set of switches. Flexibility: Depending on the need of each installation, either of two operation modes can be selected using a single jumper 1 Boiler Combination Kit Boiler Combination Kit Device to combine the AquaFREE system and a conventional boiler (gas, diesel, etc.) using the same heating circuit and selecting the system to be used in accordance with the kilowatt price and/or the outside temperature. The Boiler Combination Kit allows 3 different operating modes: Automatic, the system selects the unit (conventional boiler or AquaFREE module) in accordance with the programmed needs. Boiler only, only conventional heating system. AquaFREE only, heating and cooling system using the AquaFREE module. Remote Thermostat The Remote thermostat s features are as follows: - Radio thermostat, wireless. - Innovative and ergonomic design. - Easy to handle, displayed on a large screen. - Different working modes depending on room occupancy. - Different programs for start, stop and timer operation. - Highly useful holiday mode. pag 17

18 Benefits of AquaFREE. Selection benefits: Adaptable to customer needs Selecting the most adequate system Depending on his needs, the user can choose between different systems: Heating floor systems. Radiator systems (low temperature). Fan-coil heating systems. Mixed radiator/fan-coil + heating floor systems. Mixed radiator + fan-coil systems. Easy temperature selection The water temperature can be adjusted using a 10-position rotary switch. These 10 different positions allow the installation to be optimized depending on the needs of each installation. The set temperature can be up to 48ºC. The working temperature range for each of these 10 positions is shown in the following graph: Water Temperature Ambient temperature pag 18

19 Benefits of AquaFREE Installation benefits: 1.2. Benefits from the point of view of Installation AquaFREE systems provide the following benefits from the point of view of installation: Compact Size The AquaFREE module requires less installation space than a conventional boiler. 1 More straightforward installation, no smoke outlet required Long piping length Water piping The AquaFREE system is prepared for long lengths of hydraulic piping with a pressure loss of up to 0,5 bar. Gas piping Available in lengths of up to 30 meters, with a distance that allows the installation to be flexible depending on each user s needs. Length of up to 30 m. pag 19

20 Benefits of AquaFREE. Installation benefits: Easy installation and maintenance The use of electricity as the energy source instead of fossil fuels implies a series of benefits from the installation as well as the subsequent maintenance point of view. The benefits are the following: - High efficiency - Compact installation - No accumulation tanks required for the energy source Conventional boiler Accumulator tank The AquaFREE module does not require an Accumulator Tank Easy and flexible communication installation No polarity The system s units are interconnected via the communication bus that uses H-Link language. This internal Hitachi communication language allows two nonpolarity cables to be used allowing lengths up to 1,000 meters. Length of up to 1,000 m. pag 20

21 Benefits of AquaFREE Start-up benefits: 1.3. Benefits from the start-up point of view As far as start-up is concerned, the AquaFREE system provides the following benefits: Easy start-up Selection switches Start-up is performed by means of an intuitive system to select the different parameters that make up the AquaFREE module. 1 Test run This selection is performed by means of rotary switches that configure the different basic parameters of the module: Set water temperatures, and adjustment of the Electric heater s working range. There are different start-up and temperature adjustment conditions to adjust the support electrical resistances. Each installation can be customized depending on needs. Liquid crystal display Example of Alarm 02 detection Alarm code Alternating indication every second Alarm code Alarm system Rigorous alarms detection system. AquaFREE systems provide a wide alarm detection range which has a direct impact on the set-up and subsequent maintenance of the installation, allowing all the unit s key points to be controlled using the PC-P2HTE. All the control parameters of all the key point of the systems cans be viewed with a simple check mode: inverter compressor frequency reading, thermistor temperature reading, etc. The PC-P1HE is very useful for subsequent maintenance of the system and units Service checking tool The liquid crystal display on the front part of the module will display an alarm code so that a diagnostic of the installation can be performed rapidly pag 21

22 Benefits of AquaFREE. Functionality benefits: 1.4. Benefits from the point of view of functionality Designed for maximum comfort Hitachi s AquaFREE technology materializes into very functional machines that are designed to provide maximum comfort to users. An example of this are the new technologies used in the AquaFREE series air conditioning systems. One of these new technologies is controlling the system using a single 10-position rotary switch located on one of the sides of the electrical box which allows the set temperature of the water to be customized depending on each installation Easy to use. User-friendly, the complete operation of the unit can be controlled using just three buttons High efficiency system. Increased system capacity AquaFREE systems are highly efficient due to the following technical features: - A more efficient heat exchanger. - Gas injection circuit Reduced power consumption - Highly efficient DC scroll compressor Neodymium magnets in the rotor of the compressor motor - New inverter control Highly Efficient DC Scroll Compressor pag 22

23 Benefits of AquaFREE Functionality benefits: High COP and EER As an example of this high level, the capacity operation power (COP) and the energy efficiency ratio (EER) for the RWM-3FSN1E + RAS-3HVRNE system are shown. Heating mode Cooling mode Wide range of temperatures. RANGE The use of the inverter systems along with the AquaFREE module involves a wide range of temperatures. Temperature range for heating floor and radiator/fan-coil operation. Outside air temperature Water outlet temperature Cooling operation (DB) Heating operation (WB) Cooling operation Heating operation NOTE: DB: Dry Bulb WB: Wet Bulb pag 23

24 Benefits of AquaFREE. Maintenance benefits: 1.5. Benefits from the point of view of maintenance High reliability Minimizes maintenance Faithful to Hitachi s usual philosophy, HITACHI s AquaFREE units have been designed to guarantee great reliability and robustness in order to reduce maintenance operations to a minimum Designed for easy maintenance Easy accessibility All AquaFREE system components are easily accessible. You can access all of the unit s components to perform the necessary operations through a simple cover. The entire system is designed for maintenance operations to be easy and simple. Monotubular heat exchanger 29 alarm codes for easy maintenance These units use up to 29 very precise alarm codes in order to rapidly locate any problem that might occur. The alarms are grouped by elements within the system in order to facilitate maintenance work and optimize the fitter s job Main features of the elements that make up the AquaFREE module Expansion tank Monotubular heat exchanger The monotubular exchanger has developed a very efficient exchanger system with a system of external fins and an internal system by slotted tube It allows easy disassembly for cleaning and maintenance work. It has a polyamide cover to avoid risks of corrosion. Expansion tank Stainless steel sanitary type expansion tank pag 24

25 Benefits of AquaFREE Main features of the H(V)RNE units: 1.6. Main features of the H(V)RNE outdoor units The RAS-H(V)RNE outdoor units are characterized by their silence and their efficiency; they were designed with very high technology High efficiency cooling circuit For the refrigerant cycle, HITACHI has developed a new and more efficient heat exchanger. New aluminum fins for the heat exchanger The new heat exchange with lower airflow resistance that uses new aluminum fins reduces airflow resistance and loss of pressure in the pipes. 1 Air flow resistance decreased by 20%. The optimized slit shape minimizes noise by reducing air intake resistance. Pressure drop in heat exchanger pipe has been decreased. Larger heat exchanger The new larger heat exchanger increases efficiency. A lower flow resistance provides more silent operation Highly efficient scroll compressor Hitachi s exclusive Scroll Compressor The strong points of the new Hitachi high pressure scroll compressor Improvement of the compressor shaft s rotation system, which has two bearings located on the ends of the shaft which allow for greater system reliability. New scroll coil which enables the overlap between the two scrolls to be optimized, thus greatly reducing intake loss due to leakage. Oil return circuit design largely reduces heat loss. Improved lubrication system to provide accurate oiling for the compressor. pag 25

26 Benefits of AquaFREE. Main features of the H(V)RNE units: Compressor control by means of an inverter Control by inverter provides a very fine control of the compressor which allows the set temperature to be reached quickly and a stable operation to be maintained which saves energy and reduces the noise level. This operation is possible because the compressor operates continuously and self-adjusts itself depending on the system s needs. This prevents the energy waste of conventional systems when stopping and starting up when the set temperature is reached. At the same time, possible compressor breakage is eliminated since many startups and stops are avoided. Diagram of operation (in heating mode): Set temperature Water temperature DC INVERTER Machine with constant speed Time Noise reduction HITACHI AquaFREE systems have been designed to reduce noise to a minimum. The AquaFREE module has been designed rigorously to reduce the installation s noise to 28 db (A). Because HITACHI has used all of the technology it has available to develop its products, AquaFREE is one of the most silent systems on the market. The compressor s features are as follows: Scroll type The use of neodymium magnets improves the performance at low frequencies. Two-part rotor reduces electromagnetic noise. pag 26

27 Benefits of AquaFREE Main features of the H(V)RNE units: The fan s features are as follows: Uses DC motors DC motor Efficiency increased by 40% (motor input halved) 1 Motor efficiency (%) AC motor Revolutions per Min. (rpm) Control using PWM (pulse width modulation). This control system allows the fan s start-up and stop rate to be controlled and adjusted Electricity Time 120 Current Voltage 180 Electricity Time 180 Current Voltage 180º RECTANGULAR WAVE PWM CONTROL By combining these elements, the system s electromagnetic noises have been reduced. pag 27

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29 General data 2. G e n e r a l d a t a This chapter gives a brief description of the most important features of the AquaFREE modules and their extra RAS- H(V)RNE outdoor units from Hitachi s DC Inverter series. Contents 2. General data Indoor units RWM Aqua Free (Basic Models) RWM Aqua Free (Models with electrical resistance) Outdoor units RAS DC Inverter Main Component Data for Indoor Units RWM Aqua Free (Basic Models) RWM Aqua Free (Models with electrical resistance) Main Component data for Outdoor Units RAS DC Inverter pag 29

30 General data 2.1. Indoor units RWM Aqua Free (Basic Models) Electrical power supply Heating floor (Min/Nom/Max) Conditions: Water Inlet/Outlet: 18/23ºC Outdoor temperature: (DB/WB): 35/-ºC Fan-coil (Min/Nom/Max) Conditions: Water Inlet/Outlet: 12/7ºC Outdoor temperature: (DB/WB): 35/-ºC Capacity for Heating floor (Min/Nom/Max) Conditions: Water Inlet/Outlet: 30/35ºC Outdoor temperature: (DB/WB): 7/6ºC Capacity for radiators (Min/Nom/Max) Conditions: Water Inlet/Outlet: 40/45ºC Outdoor temperature: (DB/WB): 7/6ºC Cooling capacity Heating capacity Capacity for Heating floor (Nom/Max) Conditions: Water Inlet/Outlet: 30/35ºC Outdoor temperature: (DB/WB): -7/-8ºC RWM model RWM-3FSN1E RWM-4FSN1E RWM-5FSN1E 1~ 230V 50Hz kw 3.90/7.10/ /10.00/ /12.50/14.00 kw 2.90/6.00/ /7.20/ /9.20/10.30 kw 4.00/8.00/ /11.20/ /14.00/16.70 kw 3.60/7.20/ /9.80/ /13.70/15.70 kw 6.00/ / /12.50 Capacity for radiators (Nom/Max) Conditions: Water Inlet/Outlet: 40/45ºC kw 5.30/ / /12.40 Outdoor temperature: (DB/WB): -7/-8ºC Pump input power W Sound Pressure Level db(a) Height mm 900 External dimensions Width mm 526 Depth mm 372 Net weight Kg Refrigerant - R410A Refrigerant Piping Connection - Connection with flare nuts mm Connection Liquid Piping Ø9.53 (3/8 ) (inches) measurements mm Gas piping Ø15.88 (5/8 ) (inches) Nominal water flow m 3 /h Water Pipe Connection - Connection with flare nuts mm Connection Circuit Ø25.4 (1 ) (inches) measurements mm Supply Ø19.05 (3/4 ) (inches) Water Working pressure (Nom) maq Expansion tank volume l 5 Maximum electrical power consumption A Packaging dimensions m Color (Munsell code) - Aluminum Gray ( - ) Remote Control SW - CTA- IMH RF A NOTE: 1. The nominal cooling and heating capacity is the combined capacity of HITACHI s AquaFREE system, and it is based on the following standards: EN Piping Length: 7.5 meters Piping lift: 0 meters DB: dry bulb WB: wet bulb Heating floor Fan-coil/Radiators Operation condition Cooling Heating Cooling Heating Water temperature Outdoor air inlet temperature Inlet 23.0 C 30.0 C 12.0 C 40.0 C Outlet 18.0 C 35.0 C 7.0 C 45.0 C DB 35.0 C 7.0 C 35.0 C 7.0 C WB C C 2. The Sound Pressure Level is based on following conditions: 1 meter from the unit front surface. Voltage of the power supply is 230V. The above data was measured in an anechoic chamber, so reflected sound should be taken into consideration when installing the unit. pag 30

31 General data RWM Aqua Free (Models with electrical resistance) RWM model RWM-3FSN1E- 4.5H1 RWM-4FSN1E- 6H1 RWM-5FSN1E- 6H1 RWM-4FSN1E- 6H3 RWM-5FSN1E- 6H3 Electrical power supply 1~ 230V 50Hz 3N~ 400V 50Hz Heating floor (Min/Nom/Max) Conditions: Water Inlet/Outlet: 18/23ºC kw 3.90/7.10/ /10.00/ /12.50/ /10.00/ /12.50/14.00 Outdoor temperature: (DB/WB): 35/-ºC Cooling capacity Heating capacity Fan-coil (Min/Nom/Max) Conditions: Water Inlet/Outlet: 12/7ºC Outdoor temperature: (DB/WB): 35/-ºC kw 2.90/6.00/ /7.20/ /9.20/ /7.20/ /9.20/10.30 Capacity for Heating floor (Min/Nom/Max) Conditions: Water Inlet/Outlet: 30/35ºC kw 4.00/8.00/ /11.20/ /14.00/ /11.20/ /14.00/16.70 Outdoor temperature: (DB/WB): 7/6ºC Capacity for radiators (Min/Nom/Max) Conditions: Water Inlet/Outlet: 40/45ºC kw 3.60/7.20/ /9.80/ /13.70/ /9.80/ /13.70/15.70 Outdoor temperature: (DB/WB): 7/6ºC Capacity for Heating floor (Nom/Max) Conditions: Water Inlet/Outlet: 30/35ºC kw 6.00/ / / / /12.50 Outdoor temperature: (DB/WB): -7/-8ºC Capacity for radiators (Max) Conditions: Water Inlet/Outlet: 40/45ºC kw 5.30/ / / / /12.40 Outdoor temperature: (DB/WB): -7/-8ºC 4.50kW auxiliary resistance at 230V kw 1.50/3.00/ (min/med/max) at 400V kw kW auxiliary resistance at 230V kw /4.00/ /4.00/ (min/med/max) at 400V kw /4.00/ /4.00/6.00 Pump input power W Sound Pressure Level db(a) Height mm 900 Outside measurements Width mm 526 Depth mm 372 Net weight Kg Refrigerant - R410A Refrigerant Piping Connection - Connection with flare nuts Connection measurements mm Liquid Piping Ø9.53 (3/8 ) (inches) mm Gas piping Ø15.88 (5/8 ) (inches) Nominal water flow Heating m 3 /h Water Pipe Connection - Connection with flare nuts Connection measurements mm Circuit Ø25.4 (1 ) (inches) mm Supply Ø19.05 (3/4 ) (inches) Water Working pressure (Nom) maq Expansion tank volume l 5 Maximum electrical power consumption A Packaging dimensions m Color (Munsell code) - Aluminum Gray ( - ) Remote Control SW - CTA- IMH RF A NOTE: 1. The nominal cooling and heating capacity is the combined capacity of HITACHI s AquaFREE system, and it is based on the following standards: EN cooling capacity Piping Length: 7.5 meters Piping lift: 0 meters DB: dry bulb WB: wet bulb Heating floor Fan-coil/Radiators Operation condition Cooling Heating Cooling Heating Water temperature Outdoor air inlet temperature Inlet 23.0 C 30.0 C 12.0 C 40.0 C Outlet 18.0 C 35.0 C 7.0 C 45.0 C DB 35.0 C 7.0 C 35.0 C 7.0 C WB C C 2. The Sound Pressure Level is based on following conditions: 1 meter from the unit front surface. Voltage of the power supply is 230/400V. The above data was measured in an anechoic chamber, so reflected sound should be taken into consideration when installing the unit. 2 pag 31

32 General data 2.2. Outdoor units RAS DC Inverter RAS Model RAS-3HVRNE RAS-4HVRNE RAS-5HVRNE RAS-4HRNE RAS-5HRNE Electrical power supply 1~ 230V 50Hz 3N~ 400V 50Hz Color (Munsell code) - Natural gray (1.0Y8.5/0.5) Sound Pressure Level (night mode) Outside measurements db(a) 43/(39) 45/(41) 47/(43) 45/(41) 47/(43) Height mm Width mm Depth mm Net weight Kg Refrigerant - R410A Flow control - Microprocessor-controlled expansion valve Compressor type - Hermetic (Rotary) Hermetic (Scroll) Hermetic (Scroll) Hermetic (Scroll) Hermetic (Scroll) Heat exchanger Qty Power kw 0,98 1,38 1,38 2,20 3,00 Multi-pass cross-finned tube Condenser Fan Type - Propeller fan Qty Air flow rate m³/min Power W Refrigerant piping - Connection with flare nuts Connection Liquid Piping mm (inches) Ø9.53 (3/8 ) Ø9.53 (3/8 ) Ø9.53 (3/8 ) Ø9.53 (3/8 ) Ø9.53 (3/8 ) measurements mm Gas piping (inches) Ø15.88 (5/8 ) Ø15.88 (5/8 ) Ø15.88 (5/8 ) Ø15.88 (5/8 ) Ø15.88 (5/8 ) Refrigerant load Kg 2,4 3,6 3,6 3,6 3,6 Maximum electrical power consumption A 21,0 28,0 29,0 11,0 15,0 Packaging measurements m³ 0,34 0,55 0,55 0,55 0,55 OD: Outer diameter NOTE: 1. The nominal cooling and heating capacity is the combined capacity of HITACHI s AquaFREE system, and it is based on the following standards: EN cooling capacity Heating capacity in units with EN 255 reversible cycle Heating floor Fan-coil/Radiators Operation condition Cooling Heating Cooling Heating Water temperature Outdoor air inlet temperature Inlet 23.0 C 30.0 C 12.0 C 40.0 C Outlet 18.0 C 35.0 C 7.0 C 45.0 C DB 35.0 C 7.0 C 35.0 C 7.0 C WB C C 2. The Sound Pressure Level is based on following conditions: 1 meter from the unit front surface. Voltage of power supply is 230/400V. The above data was measured in an anechoic chamber, so reflected sound should be taken into consideration when installing the unit. Piping Length: 7.5 meters Piping lift: 0 meters DB: dry bulb WB: wet bulb pag 32

33 General data 2.3. Main Component Data for Indoor Units RWM Aqua Free (Basic Models) Pump Heat exchanger RWM model RWM-3FSN1E RWM-4FSN1E RWM-5FSN1E Type - Special Shell and Tube Material - Finned copper/plastic pipe (PP) Mains water inlet Ø mm 25,40 25,40 25,40 Piping Refrigerant Gas Piping Ø mm 15,88 15,88 15,88 Refrigerant Liquid Piping Ø mm 9,53 9,53 9,53 Water Inlet Ø mm 25,40 25,40 25,40 Water Outlet Ø mm 25,40 25,40 25,40 Maximum refrigerant working pressure MPa 4,15 4,15 4,15 Maximum water working pressure mm Type - Centrifugal (WILO / - ) Electrical power supply - 1~230V, 50 Hz Lift pressure (Min/Max) maq 1 / 4 1 / 4 1 / 5 Water flow (Min/Max) m³/h 1,1 / 3 1,1 / 3 1,2 / 3,5 Type - Sanitary Expansion tank Material - Steel Volume l RWM Aqua Free (Models with electrical resistance) Heat exchanger Pump RWM model RWM-3 FSN1E- 4.5H1 RWM-4 FSN1E-6H1 RWM-5 FSN1E-6H1 Type - Special Shell and Tube Piping Expansion tank Material - Finned copper/plastic pipe (PP) RWM-4 FSN1E- 6H3 RWM-5 FSN1E- 6H3 Mains water inlet Ø mm 25,40 25,40 25,40 25,40 25,40 Refrigerant Gas Piping Ø mm 15,88 15,88 15,88 15,88 15,88 Refrigerant Liquid Piping Ø mm 9,53 9,53 9,53 9,53 9,53 Water Inlet Ø mm 25,40 25,40 25,40 25,40 25,40 Water Outlet Ø mm 25,40 25,40 25,40 25,40 25,40 Maximum refrigerant working pressure MPa 4,15 4,15 4,15 4,15 4,15 Maximum water working pressure mm Type - Centrifugal (WILO / - ) Electrical power supply - 1~230V, 50 Hz 3~400V, 50 Hz Lift pressure (Min/Max) maq 1 / 5 1 / 5 1 / 5 1 / 5 1 / 5 Water flow (Min/Max) m³/h 1,2 / 3,5 1,2 / 3,5 1,2 / 3,5 1,2 / 3,5 1,2 / 3,5 Type - Sanitary Material - Steel Volume l 5 pag 33

34 General data 2.4. Main Component data for Outdoor Units RAS DC Inverter RAS Model RAS-3 HVRNE RAS-4 HVRNE RAS-5 HVRNE RAS-4 HRNE RAS-5 HRNE Heat exchanger Fan unit Compressor Heat exchanger type - Multi-pass cross-finned tube Piping Fins Material - Copper piping Outer diameter mm Rows Number of tubes/coil Material - Aluminum Pitch mm 1,9 1,9 1,9 1,9 1,9 Maximum operation pressure MPa 4,15 4,15 4,15 4,15 4,15 Total face area m² 0,64 1,00 1,00 1,00 1,00 Number of coils/unit Fan Motor Type - Propeller fan Number/unit Qty Outer diameter mm Revolutions rpm Nominal air flow/fan m 3 /min Type - Drip-proof enclosure Starting method - Permanent condenser Power W Qty Insulation class - E E E E E Model - 2YC45BXD E305AHD-27D4 E405AHD-36D2 E305AHD-27D4 E405HD-36D4 Pressure resistance Motor Type Oil Discharge MPa 4,15 4,15 4,15 4,15 4,15 Suction MPa 2,21 2,21 2,21 2,21 2,21 Starting method - Inverter-Driven Poles Insulation class - E E E E E Type - FVC50K FVC68D FVC68D FVC68D FVC68D Q ty l 0,75 1,2 0,5 1,2 1,2 Refrigerant load Kg 2,4 3,6 3,6 3,6 3,6 pag 34

35 Dimensions Data 3. D i m e n s i o n s D a t a This chapter shows the measurements and the minimum installation space required for the AquaFREE modules and their extra RAS-H(V)RNE outdoor units from Hitachi s DC Inverter series. Contents 3. Dimensions Data Indoor units Water Free - (Basic models with resistance) Outdoor units RAS - DC Inverter pag 35

36 Dimensions Data 3.1. Indoor units Water Free - (Basic models with resistance) RWM-3~5FSN1E-(4.5/6H1/3) View from A (Only for units without electrical resistance) 3D view of the RWM unit Installation space NOTE: Use the Fan-coil Accessory Kit (FCK) for fan-coil applications. Units in: mm No. Description Remarks 1 Heat exchanger 2 Refrigerant gas pipe Ø15.88 (5/8 ) flare nut connection 3 Refrigerant liquid pipe Ø9.53 (3/8 ) flare nut connection 4 Expansion valve 5 Air drain valve 6 Safety valve 7 Front cover 8 Electrical Control Box 9 Water Pump 10 Water connection Ø19.05 (3/4 ) 11 Water inlet from the heating floor Size of heating floor water circuit connections Ø25.4 (1 ) 12 Water outlet to heating floor circuit 13 Remote Control 14 Electrical resistance Models (4.5/6H1/3) only 15 Fan-coil accessory kit pag 36 Drawing code: XEKS1053

37 Dimensions Data 3.2. Outdoor units RAS - DC Inverter RAS-3HVRNE 3 Installation space Units in: mm No. Description Remarks 1 Service cover 2 Refrigerant gas pipe Ø15.88 (5/8 ) flare nut connection 3 Refrigerant liquid pipe Ø9.53 (3/8 ) flare nut connection 4 Holes for Refrigerant piping Knockout hole 5 Holes for control line wiring Ø26.5 knockout hole 6 Drain holes Ø26 7 Drain holes 4-Ø24 8 Holes for power supply wiring Ø26.5 knockout hole 9 Holes for fixing machine to floor 2 U Cut Holes 10 Holes for fixing machine to wall M5 self-tapping screws NOTE: Even if there are no walls in front of or behind the unit, a minimum space of 600 mm is required in front of the unit, and 200 mm behind it. If there are walls around the unit, then vent holes must be made through the wall. When there are obstacles above the unit, the four surrounding sides must be kept open. Drawing code: XEKS0831 pag 37

38 Dimensions Data RAS -4/5H(V)RNE Installation space Units in: mm No. Description Remarks 1 Service cover 2 Refrigerant gas pipe Ø15.88 (5/8 ) flare nut connection 3 Refrigerant liquid pipe Ø9.53 (3/8 ) flare nut connection 4 Holes for Refrigerant piping Knockout hole 5 Holes for control line wiring Ø26.5 knockout hole 6 Drain holes Ø26 7 Drain holes 4-Ø24 8 Holes for power supply wiring Ø26.5 knockout hole 9 Holes for fixing machine to floor 2 U Cut Holes 10 Holes for fixing machine to wall M5 self-tapping screws NOTE: Even if there are no walls in front of or behind the unit, a minimum space of 600 mm is required in front of the unit, and 300 mm behind it. If there are walls around the unit, then vent holes must be made through the wall. When there are obstacles above the unit, the four surrounding sides must be kept open. Drawing code: XEKS0831 pag 38

39 Capacities and selection data 4.C a p a c i t i e s a n d s e l e c t i o n d a t a This chapter is a guide for selecting the most suitable units for your requirements and shows you the performance details of each AquaFREE unit. Contenido 4. Capacities and selection data Choosing your AquaFREE system How to use the data in this chapter Example of choosing units by heating load Example of selecting cooling load Capacity in heating mode Capacity in cooling mode Capacities and electrical power consumption Refreshing Floor/Heating Floor Fan coil/radiators Correction factors for piping length Noise data pag 39

40 Capacities and selection data 4.1. Choosing your AquaFREE system The following steps are an example of how to choose the system units and indicates the way to decide on the model best suited to your own specific needs: We recommend that you choose the AquaFREE system according to the heating load How to use the data in this chapter Define the installation requirements: load, operating temperature and special installation needs. Then select the most suitable units. Decide on where to put the outdoor unit to allow easy maintenance and service. Use the following information to calculate the most suitable units: Relevant sections of Chapter 4: Heating capacity curves: Section 4.2 Piping length and correction factors: Section 4.5 Noise-related data: Section 4.6 In addition, use the following information from the technical catalogue: General data: Chapter 2 Hydraulic circuit: Section 7.4 Setting and function of DIP switches for AquaFREE indoor units: Section Example of choosing units by heating load We suggest the following method to determine the characteristics of the system units: System requirements Step 1: Heating load: Wet bulb temperature of the outside air inlet: -5 ºC Temperature of the water outlet: 35 ºC Temperature of the water inlet: 30 ºC Thermal Load: 8.00 kw Type of installation: Heating floor NOTE: The calculation methods for thermal loads in the building should comply with the regulations applicable in each country. Installation restrictions: Power supply: AquaFREE module lower than the outdoor unit: Total equivalent distance between the AquaFREE module and the outdoor unit: 230 V, 1~, 50 Hz 15 m 20 m Type of AquaFREE module: AquaFREE RWM modules needed pag 40

41 Capacities and selection data Step 2: Select the units Select the units to make up the AquaFREE system according to the thermal load needed. The system chosen should have a load capacity greater than the thermal load required by the installation. Use section 4.2 to calculate your choice Unit chosen: The total heating load is 8.00 kw, and the choice of system depends on the table of capacities (section 4.2) for heating floor (35/30ºC) Heating floor Table 1: Heating capacity data AquaFREE UNITS Outside air inlet temperature WB (ºC) Water outlet/inlet temperature (35/30ºC) Max. CAP RWM-4FSN1E Apply a correction factor according to the length and height of the piping (section 4.5) and the heating capacity given in Table 1: NOTE: The defrosting factor is included in Table 1. Heating capacity of the system (THA) = heating capacity (TH) x correction factor for piping length (F) = 9.40 x 0.99 = 9.30 kw The outdoor unit most suitable for your system requirements is: Unit chosen RAS-4HVRNE/RWM-4FSN1E pag 41

42 Capacities and selection data Step 3: Select units with electrical resistance It is a geographical area where the 8.00 kw load is required at given moments. Therefore, a 3 HP unit with supporting electrical resistance can be selected. Wet bulb temperature of the outside air inlet: -5 ºC Temperature of the water outlet: 35 ºC Temperature of the water inlet: 30 ºC Thermal load: 8.00 kw Type of installation: Heating floor Installation restrictions: Power supply: AquaFREE module lower than the outdoor unit: Total equivalent distance between the AquaFREE module and the outdoor unit: Total heating load: 230 V, 1~, 50 Hz 15 m 20 m 8.00 kw The total heating load is 8.00 kw, and the choice of system depends on the table of capacities (section 4.2) for heating floor (35/30ºC) Table 2: Heating capacity data Heating floor AquaFREE UNITS Outside air inlet temperature WB (ºC) Water outlet/inlet temperature (35/30ºC) Max. CAP RWM-3FSN1E NOTE: As can be seen, the Total heating load > Capacity of the unit. These conditions require the use of additional electrical elements. The capacity of the electrical elements required can be checked in Chapter 2 (General Data). In the table and chapter 2 (General Data), select the unit with electrical resistance, which is model RWM-3FSN1E-6H1, with a total power of (6.70 x 0.98) kw of electrical resistance. We advise using support heaters rather than overloading the selected unit. Unit with selected electrical element. RWM-3FSN1E-6H1 pag 42

43 Capacities and selection data Step 4: Choice of units for installations with radiators or mixed installations (radiators + heating floor) In the case of installations with radiators, use the same process as the heating floor method. Choose the values in the table of water outlet/inlet temperature (45/40ºC) For mixed installations, use the graphs corresponding to the radiator installations Example of selecting cooling load We suggest the following method to determine the characteristics of the system units: Step 1: Cooling load: System requirements Dry bulb temperature for outside air inlet: 30 ºC Temperature of the water outlet: 7 ºC 4 Temperature of the water inlet: 12 ºC Thermal Load: 7.00 kw Type of installation: Fan-coil Installation restrictions: Power supply: 230 V, 1~, 50 Hz AquaFREE module lower than the outdoor unit: Total equivalent distance between the AquaFREE module and the outdoor unit: 15 m 20 m Type of AquaFREE module: AquaFREE RWM modules needed pag 43

44 Capacities and selection data Step 2: Select the units Select the units to make up the AquaFREE system according to the thermal load needed. The system chosen should have a load capacity greater than the thermal load required by the installation. Use section 4.3 to calculate your choice Unit chosen: The total cooling load is 7.00 kw, and the choice of system depends on the table of capacities (section 4.3) for fan-coil heating (7/12ºC) Heating floor AquaFREE UNITS Outside air inlet temperature DB (ºC) Water outlet/inlet temperature (7/12ºC) Max. CAP RWM-4FSN1E Apply a correction factor according to the length and height of the piping (section 4.5) and the cooling capacity given in Table 1: Cooling capacity of the system (TCA) = cooling capacity (TC) x correction factor for piping length (F) = 8.70 x 0.96 = 8.35 kw The outdoor unit most suitable for your system requirements is: Step 3: Unit chosen RAS-4HVRNE/RWM-4FSN1E If you want to use heating floor for cold applications, please take the following points into account: The water temperatures to be used for this type of installation vary between 19ºC and 21ºC depending on the ambient humidity. The use of temperatures at 7ºC for this type of installation could cause condensation. pag 44

45 Capacities and selection data 4.2 Capacity in heating mode The following tables show the heating capacity corresponding to a particular outside temperature, and with a water outlet/inlet temperature of 35/30 ºC and 45/40 ºC. Temperatures of between 35/30 ºC are recommended for heating floor. Temperatures of between 45/40 ºC are recommended for low-intensity radiators. AquaFREE UNITS Outside air inlet temperature WB (ºC) Water outlet/inlet temperature (35/30ºC) Max. CAP Water outlet/inlet temperature (45/40 ºC) Max. CAP Heating floor Radiators RWM-3FSN1E RWM-4FSN1E pag 45

46 Capacities and selection data AquaFREE UNITS Outside air inlet temperature WB (ºC) Water outlet/inlet temperature (35/30ºC) Max. CAP Water outlet/inlet temperature (45/40 ºC) Max. CAP Heating floor Radiators RWM-5FSN1E NOTES: Compressor capacity at maximum frequency (kw) The correction factor for defrosting is included. pag 46

47 Capacities and selection data Water outlet/inlet temperature (35/30 ºC) Capacity (kw) 4 Outside temperature (ºC) (WB) Water outlet/inlet temperature (45/40 ºC) Capacity (kw) Outside temperature (ºC) (WB) NOTES: Compressor capacity at maximum frequency (kw) The correction factor for defrosting is included. pag 47

48 Capacities and selection data 4.3 Capacity in cooling mode The heating floor and (7/12ºC) if fan-coil heating is used. AquaFREE UNITS RWM-3FSN1E RWM-4FSN1E RWM-5FSN1E Outside air inlet temperature DB (ºC) Water outlet/inlet temperature (18/23 ºC) Max. CAP Heating floor Water outlet/inlet temperature (7/12ºC) Max. CAP Fan-coil NOTES: Compressor capacity at maximum frequency (kw) pag 48

49 Capacities and selection data Water outlet/inlet temperature (18/23 ºC) Capacity (kw) 4 Outside temperature (ºC) (DB) Water outlet/inlet temperature (7/12ºC) Capacity (kw) Outside temperature (ºC) (DB) pag 49

50 Capacities and selection data 4.4. Capacities and electrical power consumption Refreshing Floor/Heating Floor Outdoor Unit Refreshing Floor Heating Floor Indoor Unit Capacity Input Power (kw) (kw) EER Performance Capacity Input Power (kw) (kw) COP Performance RAS-3HVRNE RWM-3FSN C B RAS-3HVRNE RWM-3FSN1E-4.5H C B RAS-4HVRNE RWM-4FSN1E E E RAS-4HRNE RWM-4FSN1E E E RAS-4HVRNE RWM-4FSN1E-6H E E RAS-4HRNE RWM-4FSN1E-6H E E RAS-5HVRNE RWM-5FSN1E RAS-5HRNE RWM-5FSN1E RAS-5HVRNE RWM-5FSN1E-6H RAS-5HRNE RWM-5FSN1E-6H Operation Condition Refreshing Floor Heating Floor Water temperature Outdoor Air Inlet Temperature Inlet 23.0ºC 30.0ºC Outlet 18.0ºC 35.0ºC DB 35.0ºC 7.0ºC WB - 6.0ºC Performance Class Refreshing Floor Multi-split Conditioner Heating Floor A 3.80<EER 4.05<COP B 3.80 EER> COP>3.90 C 3.65 EER> COP>3.75 D 3.50 EER> COP>3.60 E 3.35 EER> COP>3.45 F 3.20 EER> COP>3.30 G 3.05 EER 3.30 COP pag 50

51 Capacities and selection data Heating Floor (-7ºC) Outdoor Unit Indoor Unit Capacity (kw) Heating Floor Input Power (kw) COP RAS-3HVRNE RWM-FSN1E RAS-3HVRNE RWM-3FSN1E-4.5H RAS-4HVRNE RWM-4FSN1E RAS-4HRNE RWM-4FSN1E RAS-4HVRNE RWM-4FSN1E-6H RAS-4HRNE RWM-4FSN1E-6H RAS-5HVRNE RWM-5FSN1E RAS-5HRNE RWM-5FSN1E RAS-5HVRNE RWM-5FSN1E-6H RAS-5HRNE RWM-5FSN1E-6H Operation Condition Water temperature Outdoor Air Inlet Temperature Inlet Outlet DB WB Heating Floor 30.0ºC 35.0ºC -7.0ºC -8.0ºC Fan coil/radiators Outdoor Unit Indoor Unit Capacity (kw) Fan coil Input Power (kw) EER Performance Capacity (kw) Radiators Input Power (kw) COP Performance RAS-3HVRNE RWM-FSN1E B B RAS-3HVRNE RWM-3FSN1E-4.5H B B RAS-4HVRNE RWM-4FSN1E D D RAS-4HRNE RWM-4FSN1E D D RAS-4HVRNE RWM-4FSN1E-6H D D RAS-4HRNE RWM-4FSN1E-6H D D RAS-5HVRNE RWM-5FSN1E RAS-5HRNE RWM-5FSN1E RAS-5HVRNE RWM-5FSN1E-6H RAS-5HRNE RWM-5FSN1E-6H Operation Condition Fan coil Radiators Water temperature Outdoor Air Inlet Temperature Inlet 12.0ºC 40.0ºC Outlet 7.0ºC 45.0ºC DB 35.0ºC 7.0ºC WB - 6.0ºC Performance Multi-split Conditioner Class Fan coil Radiators A 3.10<EER 3.20<COP B 3.10 EER> COP>3.00 C 2.90 EER> COP>2.80 D 2.70 EER> COP>2.60 E 2.50 EER> COP>2.40 F 2.30 EER> COP>2.20 G 2.10 EER 2.20 COP pag 51

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