Subscribe to Our Youtube Channel
Related Manuals for Hitachi HYDRO FREE RWLT-3.0VN1E
Summary of Contents for Hitachi HYDRO FREE RWLT-3.0VN1E
- Page 1 – INSTALLATION & OPERATION MANUAL – HYDRO FREE MODELS RWLT-(3.0-10.0)VN1E RWHT-5.0VNF1E INSTALLATION AND OPERATION MANUAL PMEN0638 rev.0 - 04/2023...
- Page 3 Specifikationerna i den här handboken kan ändras utan föregående meddelande för att Hitachi ska kunna leverera de senaste innovationerna till kunderna. Vi på Hitachi gör allt vi kan för att se till att alla specifikationer stämmer, men vi har ingen kontroll över tryckfel och kan därför inte hållas ansvariga för den typen av fel.
- Page 4 C A U T I O N This product shall not be mixed with general house waste at the end of its life and it shall be retired according to the appropriated local or national regulations in a environmentally correct way. Due to the refrigerant, oil and other components contained in heat pump, its dismantling must be done by a professional installer according to the applicable regulations.
- Page 5 Important note: Please, check, according to the model name, which is your heat pump system, how it is abbreviated and referred to in this instruction manual. MODELS CODIFICATION This Installation and Operation Manual is related to HYDRO FREE Units. Nota importante: compruebe, de acuerdo con el nombre del modelo, el tipo de bomba CODIFICACIÓN DE de calor, su abreviatura y su referencia en el presente manual de instrucciones.
- Page 6 INDEX ÍNDICE 1 GENERAL INFORMATION 1 INFORMAÇÃO GERAL 2 SAFETY 2 SEGURANÇA 3 GENERAL DIMENSIONS 3 DIMENSÕES GERAIS 4 REFRIGERANT AND WATER PIPING 4 TUGAGEM DE REFRIGERANTE E DE ÁGUA 5 ELECTRICAL AND CONTROL SETTINGS 5 AJUSTES DE CONTROLO E ELÉTRICOS 6 UNIT INSTALLATION 6 INSTALAÇÃO DA UNIDADE 7 COMMISSIONING...
- Page 7 1 GENERAL INFORMATION No part of this publication may be reproduced, copied, filed Hitachi makes every effort to offer correct, up-to-date or transmitted in any shape or form without the permission of documentation. Despite this, printing errors cannot be controlled Johnson Controls-Hitachi Air Conditioning Spain, S.A.U.
- Page 8 In case that no access to the website or files are not • Check and make sure that the explanations of each part readable, please contact your Hitachi dealer or distributor. of this manual correspond to your air to water heat pump •...
- Page 9 GENERAL DIMENSIONS 3 GENERAL DIMENSIONS 3.1 SERVICE SPACE RWLT-(3.0-10.0)VN1E Front view Top view H: 1200~1500 mm Recommended unit height for proper access to the control unit panel (Unit controller). h: 350 mm Minimum unit height for installing the shut-off valves and the first bending pipe line.
- Page 10 GENERAL DIMENSIONS 3.2 NAME OF PARTS AND DIMENSIONAL DATA 3.2.1 RWLT-3.0VN1E Front view Side view Bottom view Wall support dimensions XEKS1793 Units in mm Nº Part name Nº Part name Plate heat exchanger Electrical box Water pump Switch for DHW emergency operation Solenoid valve (SV1) Water inlet pipe connection - G 1”...
- Page 11 GENERAL DIMENSIONS 3.2.2 RWLT-5.0VN1E Side view Front view Bottom view Wall support dimensions Units in mm XEKS1794 Nº Part name Nº Part name Plate heat exchanger Electrical box Water pump Switch for DHW emergency operation Solenoid valve (SV1) Water inlet pipe connection - G 1 1/4” female Expansion vessel 6L Water outlet pipe connection - G 1 1/4”...
- Page 12 GENERAL DIMENSIONS 3.2.3 RWLT-10.0VN1E Side view Front view Bottom view Wall support dimensions Units in mm XEKS1795 Nº Part name Nº Part name Plate heat exchanger Electrical box Water pump Switch for DHW emergency operation Solenoid valve (SV1) Water inlet pipe connection - G 1 1/4” Female Expansion vessel 10L Water outlet pipe connection - G 1 1/4”...
- Page 13 GENERAL DIMENSIONS 3.2.4 RWHT-5.0VNF1E Top view Side view Front view XEKS1717 Units in: mm Nº Part name Nº Part name Electronic expansion valve (R410A) Safety valve Refrigerant strainer (x2) Drain pipe Check joint (R410A) Air purger Check valve (R410A) Water strainer Plate heat exchanger (R410A-R134a) Expansion vessel 12L Solenoid valve (1 cycle)
- Page 14 REFRIGERANT AND WATER PIPING 4 REFRIGERANT AND WATER PIPING 4.1 GENERAL NOTES BEFORE PERFORMING PIPING WORK • Prepare locally-supplied copper pipes. • If piping installation is not completed until next day or over a longer period of time, braze off the ends of the piping •...
- Page 15 REFRIGERANT AND WATER PIPING 4.3 SPACE HEATING AND DHW D A N G E R Do not connect the power supply to the indoor unit prior to filling the space heating circuit (and DHW circuit if it were the case) with water and checking water pressure and the total absence of any water leakage.
- Page 16 1 Recirculation water pump (field supplied): this water pump (4) will help to correctly recirculate the hot water to the DHW • inlet. 1 Water check valve (ATW-WCV-01 accessory): this Hitachi accessory (3) is connected after the recirculation water pump (4) • in order to ensure the non-return of water.
- Page 17 REFRIGERANT AND WATER PIPING 4.3.4 Requirements and recommendations for the hydraulic circuit Make sure that all field supplied components installed in the • The maximum piping length depends on the maximum • pressure availability in the water outlet pipe. Please check piping circuit can withstand the water pressure and the water the pump curves.
- Page 18 As DHW Tank water is being used for storing drinking water, this water is mandatory to ensure a high water quality with low levels of has to be in accordance with national regulations and Hitachi’s quality CaCO3. minimum requirements. The use of softeners, active anodes or others protective systems will not bring a derogation from Hitachi’s provided...
- Page 19 ELECTRICAL AND CONTROL SETTINGS 5 ELECTRICAL AND CONTROL SETTINGS 5.1 GENERAL CHECK • Make sure that the following conditions related to power • The status of Harmonics for each model, regarding supply installation are satisfied: compliance with EN IEC 61000-3-2 and EN 61000-3-12, is as follows: The power capacity of the electrical installation is large enough to support the power demand of the system...
- Page 20 ELECTRICAL AND CONTROL SETTINGS 5.2 SYSTEM WIRING DIAGRAM Connect the units according to the following electric diagram: : Terminal board : Field wiring : Field-supplied : Circuit breaker : Earth leakage breaker : Outdoor-Indoor communication SET FREE H-LINK operating Line Outdoor unit (Twisted shielded pair cable or shielded pair cable)
- Page 21 The data corresponding to DHW tank heater is calculated in combination with the domestic hot water tank accessory “DHWT-(200/300)S-3.0H2E”. • When using a DHW tank other than those from Hitachi, the maximum connectable heater load is 3 kW (connected to TB2 terminals 30-31). •...
- Page 22 ELECTRICAL AND CONTROL SETTINGS 5.5 OPTIONAL INDOOR UNIT WIRING (ACCESSORIES) Summary of the terminal board connections (TB2) RWLT RWHT 1000012056 PMEN0638 rev.0 - 04/2023...
- Page 23 ELECTRICAL AND CONTROL SETTINGS Mark Part name Description TERMINAL BOARD 1 (TB1) 1~ 230V 50Hz Main power supply connection TERMINAL BOARD 2 (TB2) The H-LINK transmission has to be done between the indoor unit and the terminals 1-2 of either H-LINK commutation outdoor unit and central devices.
- Page 24 ELECTRICAL AND CONTROL SETTINGS Mark Part name Description Output 1 (3-way valve for swimming The air to water heat pump can be use to heat swimming pool. This output will be ON when 35(C) pool) (*) swimming pool is activated. 36(L) Output 2 (Water pump 3 (WP3)) (*) When there is a hydraulic separator or buffer tank, additional water pump (WP3) is needed.
- Page 25 ELECTRICAL AND CONTROL SETTINGS 5.6.2 Function of DIP switches and rotary switches Unit and installation pipes antifreeze protection N O T E The mark “■” indicates the dip switches positions. • Standard / ECO water pump operation No mark “■” indicates pin position is not affected. •...
- Page 26 ELECTRICAL AND CONTROL SETTINGS DSW6: Not used Example of system setting with a value Factory setting of: 16 (Do not change) DSW16 & RSW1: Unit number setting DSW7: Not used It is required to change factory default setting, with any value from 0 up to 63.
- Page 27 UNIT INSTALLATION 6 UNIT INSTALLATION 6.1 GENERAL NOTES 6.1.1 Components at receipt HYDRO FREE Low Temperature HYDRO FREE High Temperature N O T E For outdoor unit installation information, please refer to the outdoor unit Installation and operational manual. 6.1.2 Selection of the installation location The indoor unit of the split system with air to water heat pump •...
- Page 28 UNIT INSTALLATION 6.1.3 Unpacking N O T E All units are supplied with a wooden base, packed by a • The previous accessories are supplied inside the packing assembly (besides the indoor unit). cardboard box and plastic bag. Additional refrigerant piping (field supplied) for connections to outdoor •...
- Page 29 UNIT INSTALLATION 6.2 INSTALLATION OF HYDRO FREE LOW TEMPERATURE 6.2.1 Removing the indoor unit service cover 6.2.2 Removing indoor unit electrical box N O T E D A N G E R The indoor unit service cover needs to be removed for any task inside •...
- Page 30 UNIT INSTALLATION RWLT-(5.0-10.0)VN1E 1 Remove the indoor unit service cover as explained above. 2 Unscrew the 4 front screws of the electrical box cover and then, remove it. 3 Fix the indoor unit at the bottom side using the 4 screws which had been previously removed during the unpacking procedure.
- Page 31 UNIT INSTALLATION 2 Place the holes on the right side of the indoor unit cover over 6.2.6 Drain pipes connection the back plate hooks (x2 locations). When the right side is For a correct drainage, connect the drain pipe for the safety centred, repeat the operation on the left side.
- Page 32 UNIT INSTALLATION 6.3 INSTALLATION OF HYDRO FREE HIGH TEMPERATURE 3 Pull the indoor unit upper cover forward and then remove it. 6.3.1 Removing the indoor unit covers N O T E • Front cover needs to be removed for any task inside the indoor unit. •...
- Page 33 UNIT INSTALLATION b. If it is needed, the electrical box can be completely 6.3.2 Removing indoor unit electrical box extracted by disconnecting all the necessary wiring. Please, refer to the chapter of the “Servicing” “Service D A N G E R for the specific instructions.
- Page 34 UNIT INSTALLATION 6.3.3 Installation procedure N O T E • The safety valve is activated when water pressure reaches 3 bars. N O T E • Drain taps must be provided at all low points of the installation to permit complete drainage of the circuit during servicing. Please, try to perform all this procedure following all the steps in the exact order in which they are presented below.
- Page 35 UNIT INSTALLATION 6.4 POWER AND TRANSMISSION WIRING CONNECTION 6.4.1 Safety instructions 6.4.2 Connection procedure Access to the electrical box before performing the next steps: N O T E 1 Using the appropriate cable, connect the power circuit to the Check the requirements and recommendations in the chapter appropriate terminals as shown on the wiring label and the “5 ELECTRICAL AND CONTROL SETTINGS”.
- Page 36 COMMISSIONING 7 COMMISSIONING 7.1 BEFORE OPERATION • Turn OFF the main switch (Outdoor unit and Indoor unit) when the system is to be stopped for a long period of time: as the oil heater is C A U T I O N always energized even when the compressor is not working, there •...
- Page 37 In case of Heater Forced OFF (by optional dip switch setting) these temperatures condition is not performed and heating is performed by Heat Pump. Hitachi is not responsible for its operation. During commissioning and when water temperature is very low, it is important for the water to be heated gradually.
- Page 38 UNIT CONTROLLER 8 UNIT CONTROLLER N O T E HYDRO FREE models are not suitable for cooling mode (only Heating mode available). For installations where are required a Hydro Free in cooling operation please contact with our CSC in order to approve its installations in cooling mode and receive setting instructions.
- Page 39 UNIT CONTROLLER 8.2 MAIN SCREEN Depending on the working mode of the user controller, the main screen is shown in a different way. When the user controller is working as a master unit controller, a comprehensive view with all the elements is shown, whereas when the user controller is working as a room thermostat (located in one of the controlled zones), the main screen appears with simplified information.
- Page 40 UNIT CONTROLLER 8.2.2 Room thermostat view Time and date Next circuit The current time/date information is displayed. This It informs that there is a room thermostat view for a second information can be changed on the configuration menu circuit and it is possible to access by pressing the right key.
- Page 41 UNIT CONTROLLER 8.3 DESCRIPTION OF THE ICONS 8.3.1 Common icons 8.3.2 Icons for the comprehensive view Icon Name Values Explanation Icon Name Values Explanation This icon informs about pump Circuit I or II is in Demand-OFF. operation. There are three available pumps Circuit I or II is on Thermo-OFF.
- Page 42 UNIT CONTROLLER 8.3.3 Icons for the room thermostat view Icon Name Values Explanation Manual mode Manual/Auto mode Auto mode with timer setting Auto mode without timer setting Setting temperature Setting/Room temperature Room temperature End of timer period The end hour of the timer period is indicated below this icon End of holiday period The end hour of the holiday period is indicated below this icon This icon appears while the setting temperature is being changed, and indicates...
-
Page 43: Table Of Contents
UNIT CONTROLLER 8.4 CONTENTS Menu Contents Menu Contents Level 5 Level 1 Level 2 Level 3 Level 4 Level 6 Level 5 Level 1 Level 2 Level 3 Level 4 Level 6 Circuit 1 Operation Information Circuit 2 General Circuit 1 Circuit 2 Space Heating Circuit 1... -
Page 44: Menu Contents
UNIT CONTROLLER Installer mode Menu Contents Level 5 Level 1 Level 2 Level 3 Level 4 Level 6 Icon means that this menu is available only for installer, Controller Options a special user with higher access privileges to configure the Room Name system. - Page 45 UNIT CONTROLLER 8.4.1 Advanced Configuration In case of executing the Advanced Configuration, the following screens are displayed. 8.4.1.1 Screen 1: Controller Settings CODE Description Default Value Range Steps Units Notes Controller Settings Unit LCDM Controller Type Unit Room Unit + Room Room C1 If Controller type (LCDM) "Room"...
-
Page 46: Operation Information
UNIT CONTROLLER 8.4.1.3 Screen 4: External Elements CODE Description Default Value Range Steps Units Notes If Controller type (LCDM) is selected External Elements as “Unit” or “Unit + Room”. Visible only if Controller type (LCDM)= “Unit” or Controller None RTType1 Thermostat 1 None type (LCDM)= “Unit + Room and... - Page 47 UNIT CONTROLLER N O T E • (*1): If Water calculation mode for circuit 1 heating (C1WC) not “Disabled”. • (*2): If Water calculation mode for circuit 2 heating (C2WC) not “Disabled”. • (*3): If Status (DHWs)= “Enabled”. • (*4): If Status (SWP)= “Enabled”. •...
-
Page 48: Circuit
UNIT CONTROLLER 8.5.1.2 Circuit 1 Access Description Default Value Range Steps Units Notes Circuit 1 C1Op Operation Demand ON/OFF C1Mo Mode Comfort/ECO C1Rt Room T ºC (*1) C1Rs Room setting T ºC (*1) HPTo Current Water T ºC C1TC Water Setting T ºC C1OTCs Water OTC Setting T... -
Page 49: Dhw
UNIT CONTROLLER 8.5.1.4 DHW Available if Status (DHWs)= “Enabled” in “DHW” option of the “System Configuration” menu. Access Description Default Value Range Steps Units Notes DHWOp Operation Demand ON/OFF DHWt Current Temperature ºC DHWst Setting Temperature ºC DHWSHst El.Heater Status Enabled/Disabled DHWHOp El.Heater Op... -
Page 50: Electrical Heater
UNIT CONTROLLER 8.5.1.7 Electrical Heater Available if Heating source (HES)= “HP+Heater” in the “Complementary Heating” option of the “System Configuration” menu. Access Description Default Value Range Steps Units Notes Electrical Heater EHOp Operation Demand ON/OFF Current Temperature ºC EHst Setting Temperature ºC EHLF Load Factor... -
Page 51: Holiday Mode
UNIT CONTROLLER N O T E (*)This option is availbale only when the controller is set as “Room Thermostat”. 8.5.2.1 General Options • Holiday Mode (*1)(*3) • Air Eco Offset (*1) • Room Thermostats (*2) • Central Operation (*2) N O T E •... -
Page 52: Thermostat 2
UNIT CONTROLLER Room Thermostats Available if Controller type (LCDM)= “Unit” or “Unit + Room”. • Thermostat 1 (*1) • Thermostat 2 (*1) • Compensation Factors (*2) • Room Temp Demand OFF (*2) • Check RT Address (*3) N O T E •... - Page 53 UNIT CONTROLLER Circuit 2 Access Description Default Value Range Steps Units Notes Circuit 2 Rfacth1 Compen.Factor Heat OFF / 1~5 (*1) Maxfacthp1 Max Compen.Factor Heat + 0-10 ºC (*1) Maxfacthn1 Max Compen.Factor Heat - -10-0 ºC (*1) N O T E •...
-
Page 54: Circuit
UNIT CONTROLLER N O T E (*1):This setting is only configurable in multi system control 8.5.2.2 Timer and Schedule • Circuit 1 (*1) • Circuit 2 (*2) • DHW (*3) • Swimming Pool (*4) Delete All Timer Configuration • N O T E •... -
Page 55: Dhw Swp
UNIT CONTROLLER Timer and Schedule ‘any of the previous views’ Each of the following submenus share these parameters shown on the table • Circuit 1 Heating (Air) • Circuit 1 Heating (Water) • Circuit 2 Heating (Air) • Circuit 2 Heating (Water) •... -
Page 56: Space Heating
UNIT CONTROLLER 8.5.2.3 Water settings Only available when the system is configured as “Room Thermostat”. • Space Heating (*1) • (*2) • Swimming Pool (*3) N O T E • (*1): If circuit 1 or circuit 2 are operating and Water calculation mode for circuit 1 heating (C1WC) or Water calculation mode for circuit 2 heating (C2WC)= “Fix”... -
Page 57: Water Calculation Mode
UNIT CONTROLLER DHW and Swimming Pool Access Description Default Value Range Steps Units Notes DHW and Swimming Pool roomDHW Setting Temperature (DHW) 30 ~ (TDHWmax) ºC roomSWP Setting Temperature (Swimming Pool) 24~33 ºC 8.5.2.4 Space Heating If Controller type (LCDM)= “Unit” or “Unit+Room”. •... -
Page 58: Water Calculation Mode
UNIT CONTROLLER Water Calculation Mode The main parameter for configuration of space heating is the water calculation temperature. The water calculation mode establishes the temperature setting for each circuit, selecting a function to assign each temperature setting depending on the ambient temperature. Each circuit has its own Water Calculation type for heating. -
Page 59: Working Limits
UNIT CONTROLLER This calculation mode sets the circuit’s temperature setting to a defined value, forcing the unit to maintain it. Variables used in these views are displayed in the following table. Access Description Default Value Range Steps Units Notes Points C1TA1L Low ambient T (Circuit 1) -20~6... -
Page 60: Dhw
UNIT CONTROLLER N O T E • (*1): Table: CODE RWLT RWHT 70 (**) 70 (**) 80 (**) 45(*) 80 (**) - (*) In case of Boiler combination complementary heating activation (Heating source (HES) = Boiler or Boiler + Heater) maximum supply temperature range can be setting up to 80ºC: - (**): If R134a compressor disabled (DSW4#1: ON) setting must be 45ºC. - Page 61 UNIT CONTROLLER • (*5): Setting hidden and considered as “Standard” when there is no DHW heater installed. (*6): If Status (DHWs)= “Enabled” and Mode (DHWm)= “Standard”. • • (*) Refer to the table: RWLT Code RWHT 5-10HP 75 ºC (2) 50 ºC (1) 55 ºC (1) 45 ºC...
-
Page 62: Offset Temperature
UNIT CONTROLLER 8.5.2.6 Swimming Pool Available if Controller type (LCDM)= “Unit” or “Unit + Room”. • Status • Setting Temperature • Offset Temperature Access Description Default Value Range Steps Units Notes Swimming Pool Status Disabled Disabled / Enabled SWPs Setting Temperature 24~33 ºC (*1) - Page 63 UNIT CONTROLLER Heating Source Access Description Default Value Range Steps Units Notes Heating Source HP Only Heating source HP Only HP + Heater HP + Boiler Electrical Heater Access Description Default Value Range Steps Units Notes Electrical Heater HEBP Bivalent Point -20~20...
- Page 64 UNIT CONTROLLER Input demand Access Description Default Value Range Steps Units Notes Input demand SOLHy DHW Hysteresis 1-30 (*1) SOLmxt DHW Maximum Time 30~240 (*1) N O T E (*1): Available if Solar combination (SOLStSet) = “Input Demand” and Status (DHWs) = “Enabled”. Total control Access Description...
- Page 65 UNIT CONTROLLER Water Pump Configuration Access Description Default Value Range Steps Units Notes Water Pump Configuration ΔT/Fix WPOp Operation Mode WPSS Space Speed 50~100 (*1) WPDS DHW Speed 50~100 (*2) WPWS SWP Speed 50~100 (*3) WPMinf Minimum OFF Time 0~120 WPMino Minimum ON Time...
- Page 66 UNIT CONTROLLER System • Hydraulic Sep. Status • Smart Function Access Description Default Value Range Steps Units Notes System Hydraulic Sep. Status Disabled Disabled / Enabled Smart Function Smart Function Access Description Default Value Range Steps Units Notes Smart Function TarSt Status Disabled...
- Page 67 UNIT CONTROLLER Available if Status (DHWs)= “Enabled”. Access Description Default Value Range Steps Units Notes Disabled, AutoST Circuit pump Disabled Enabled, Anti-Legionella Disabled, Push, AutoT DHW Boost Push (*1) Open, Closed AutoDiff Boost setting 30 ~ (TDHWmax) (*2) N O T E (*1) This parameter is set to “Disabled”...
- Page 68 UNIT CONTROLLER Inputs range visualizations and constraints table: Available at Constraints Value Visibility Disabled Always Available if some of the Water Calculation modes (Water calculation mode for circuit 1 heating (C1WC) or Water calculation mode for circuit 2 heating (C2WC) Demand On/Off are not set as “Disabled”.
- Page 69 UNIT CONTROLLER Outputs Access Description Default Value Range Steps Units Notes Outputs SWP 3WV Output 1 (if SWP) Water Pump3 Output 2 (if boiler or hydraulic separator) Output 3 Boiler (if boiler) / Relay 1 Solar Pump See “Outputs range Output 4 (if solar) visualization and...
- Page 70 UNIT CONTROLLER Auxiliary Sensors Access Description Default Value Range Steps Units Notes Auxiliary Sensors Taux1 Sensor 1 Two3 (if Boiler) *See “Inputs range Taux2 Sensor 2 Swimming pool (if SWP existing) visualization and constraints table” below Taux3 Sensor 3 Outdoor Sensor Sensors range visualization and constraints table: Available at...
- Page 71 UNIT CONTROLLER 8.5.3.1 Controller Options Access Description Default Value Range Steps Units Notes Controller Options Unit LCDUop Operation view Unit (*4) (*1) Room Holiday Eco / Comfort ButtonAction Favourite Action (*2) Timer DHW Boost tempOffset Temperature Sensor Offset -5 to 5 ºC (*3) N O T E...
- Page 72 UNIT CONTROLLER 8.5.3.3 Date and Time • Adjust Date and Time • European Summer Time • UTC Zone Access Description Default Value Range Steps Units Notes Date and Time Adjust Date and Time euSumerTime European Summer Time Disabled Enabled / Disabled UTC Zone 0 to 12 (*1)
- Page 73 UNIT CONTROLLER UTC Zone When European Summer time is selected as “Enabled”. Europe spans 7 primary time zones (5 of them can be seen on the map in this article, while 2 other zones contain the European part of Kazakhstan and some very eastern territories of European Russia). Most of European countries use daylight saving time and switch to it at the same moment, which is ‘harmonise’...
- Page 74 UNIT CONTROLLER 8.5.4 Commissioning • Air Purge Procedure • Unit Test Run Access Description Default Value Range Steps Units Notes Commissioning Air purge procedure Unit test run 8.5.4.1 Air Purge Procedure • Duration • Start air purge Access Description Default Value Range Steps Units...
- Page 75 UNIT CONTROLLER 8.5.5 About In this menu, it is possible to consult some useful information. There are two main options: • System Information • Contact Information 8.5.5.1 System Information System information view will give the version number of the HYDRO FREE and the PC-ARFWE. It will be done in a view as the following one: In this view, nothing can be edited.
- Page 76 UNIT CONTROLLER 8.5.6 Factory Reset This function is only visible for the installer. It asks for removing all the settings and retourns to the factory setting configuration. 8.5.7 Return to user mode This function allows to getting out of the “Installer mode”. PMEN0638 rev.0 - 04/2023...
- Page 77 UNIT CONTROLLER 8.6 INDEX OF REFERENCES REFERENCE PAGE COT ..................... 47 ABSENTDAY ..................45 ABSENTMONTH ................. 45 CURRENTLANGUAGE ............... 64 ABSENTSETTING ................45 DESFUN ....................43 ABSENTTIME ..................45 DESFUN ....................55 ABSENTYEAR ..................45 DHWAOP ..................... 43 AUTODIFF ................... 61 DHWHOP ....................
- Page 78 UNIT CONTROLLER I6......................61 TARST ....................60 I7......................61 TAUX1 ....................64 KEEPP ....................55 TAUX2 ....................64 LCDBRIGHTNESS ................67 TAUX3 ....................64 LCDCONTRAST .................. 67 TDHWMAX ..................54 LCDL ....................39 TDHWMAXTIME ................. 54 LCDM ....................39 TDHWS ....................54 LCDUOP ....................
- Page 79 TROUBLESHOOTING 9 TROUBLESHOOTING Alarm code indication on remote control switch: Alarm indication Alarm code Alarms for Indoor units Alarm Retry Stop RWLT RWHT Origin Detail of Abnormality Main Factors Code Code Transmission Alarm (Not outdoor unit Loose, disconnected, broken or Communication detected) short-circuited connector...
- Page 80 TROUBLESHOOTING Alarm Retry Stop RWLT RWHT Origin Detail of Abnormality Main Factors Code Code No Opentherm/Hlink Indoor-LCD Receiver Communication failure communication for a continuous period of 10 minutes. There is no communication for 1 Indoor-LCD RF Communication failure hour with on or two RF receives which are bound to the RF-Bridge.
- Page 81 TROUBLESHOOTING Alarms for Outdoor units Code Category Type of abnormality Main cause number Activation of PSH, locked motor, abnormal operation in the power supply phase. Failure of fan motor, drain discharge, PCB, relay, float switch Activation of protection device (high pressure Outdoor unit cut) activated.
- Page 82 MAINTENANCE Code Category Type of abnormality Main cause number Incorrect setting address or refrigerant cycle Over 64 indoor units setting by number or indoor unit address. Number setting Incorrect setting of indoor unit number for The number of indoor units connected to the H-LINK II of one system is 17 or higher.
- Page 83 MAINTENANCE contact that is caused by the loosened terminal connections, the oxidized contacts, the foreign matter and other items. Check the electrical insulation resistance. 6 Control device and protection device Setting: Do not readjust the setting in the field unless the setting is maintained at a point that is different from the point listed in •...
- Page 84 MAINTENANCE The manometer is placed at different positions according to each unit model. The manometer is installed factory supplied as it is shown: RWLT RWHT Manometer Manometer N O T E The water pressure must remain above 1 bar in order to prevent air from entering the circuit, and below 3.0 bars (safety valve opening value). DHW (if used): Check there is no loss of pressure and ensure that DHW pressure is not higher than 6 bars.
- Page 85 MAINTENANCE 6 Filter +: The Filter + valve is an on-off ball valve containing an interchangeable cylindrical filter which is easy to inspect and remove for normal maintenance operations. Normally, Filter + ball valve it is used as a shut-off valve by turning the handle 90º clockwise (1). Filter+ ball valve makes the maintenance operations easier.
- Page 86 MAINTENANCE position. 11 Refrigerant piping connection • Leakage: Check for the refrigerant leakage at the refrigerant piping connections in the indoor unit. Check the different connections of the plate heat exchanger. 12 Electrical equipment • Activation: Check for an abnormal activation of the magnetic contactor, the relay, the PCBs and others. •...
- Page 88 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. Ronda Shimizu, 1 - Políg. Ind. Can Torrella 08233 Vacarisses (Barcelona) Spain © Copyright 2023 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. – All rights reserved. PMEN0638 rev.0 - 04/2023 Printed in Spain...
Need help?
Do you have a question about the HYDRO FREE RWLT-3.0VN1E and is the answer not in the manual?
Questions and answers