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INSTALLATION MANUAL

1. as 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 Flow l min T1 Oan NO M1 M3 PELLET Outdoor unit Indoor unit Refrigerant heat exchanger Water heat exchanger Compressor Pump Shut off valve Collector field supply By pass valve field supply Radiator field supply Electronic expansion valve Indoor unit refrigerant stop valve Remote controller Individual motorized valve to control loop radiators field supply Individual room thermostat field supply Installation space Living room ESP kPa External static pressure kPa flow l min Flow l min Without 3 way valve Jeune seats Including 3 way valve Maximum external static pressure if AT 10 C heating Maximum external static pressure if 5 heating INFORMATION The ESP curve is the maximum ESP curve The pump of the indoor module is inverter controlled and controls to have a fixed AT between return and leaving water temperature In case of installing a domestic hot water tank there is an additional pressure drop over the 3 way valve delivered as accessory with the tank Check that the total water volume in the installation excluding the internal water volume of the unit is 20 minimum
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3. Interface relay K1E KSE Electronic expansion valve K R A P PCB relay 18 8 3 way valve K4S 2 way valve MAG Compressor Switch box cooling fan M1BM2P DC inverter pump PC A11P Power circuit PEGA inen Optocoupler input circuit PS A BP aussen Switching power supply Q1DI Q2DI Earth leakage protector E I Thermal protector water piping R1 R2 A4P Resistance Fille Reactor R1H A10P Humidity sensor RAT ROP Ambient sensor Domestic hot water tank thermistor External sensor floor or ambient Liquid thermistor R410A Returning water thermistor Leaving water thermistor heating Discharge thermistor Liquid thermistor R134a Fin thermistor Leaving water thermistor cooling Liquid thermistor cooling Suction thermistor cooling RGXd A P aiiis Receiver circuit SAPE ioc High pressure switch SUD Benefit kWh rate power supply contact SOS Laune Input multiple setpoint 1 548 Input multiple setpoint 2 SS1 unu Selector switch emergency 551 A2P sai sterne Selector switch master slave 551 A7P Selector switch TOA PB isis Transmitter circuit T1R T2R A P Diode bridge Power module V1
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5. 1 European International Technical Standard setting the limits for voltage changes voltage fluctuations and flicker in public low voltage supply systems for equipment with rated current 75 A 2 European International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low voltage systems with input current gt 16 A and lt 75 A per phase Installation manual 18 DAIKIN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 8 2 Internal wiring Parts table Refer to the wiring diagram sticker on the unit The abbreviations used are listed below AP User interface ASP Control PCB AAP Inverter PCB OP Sassen QA PCB Filter PCB ATP Digital I O PCB Demand PCB Multi tenant PCB A10P Thermostat PCB 1 Receiver PCB BTPH snaar unies High pressure sensor Low pressure sensor C1 C3 nnn Filter capacitor C1 C3 A4P PCB capacitor DSA ASP ra es Dip switch FAU Fuse T 3 2 A 250 V F1U Fuse T 3 15 A 250 V F1U Fuse T 6 3 A 250 V F1U F2U A7P Fuse 5 A 250 V F3U F4U Fuse T 6 3 A 250 V PCB LED IPM iae Integrated power module
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8. 03 minutes passed continue in External room Yes since 1 domestic hot water thermostat contol Yes Yes 2 T RS Operation will switch to Operation will Switch to space space heating heating 5 Space heating operation will since 2 continue till timer finished Yes b 4 ww N R N i Yes 2 Remote controller room y Storage setpoint 0 03 2 emperaire S Se thermostat control reached lt Tset 3 C since sel T Yes Yes Yes ww ww ww A Operation will Operation will Timer d 02 15 continue in Switch to space minutes passed P 9 domestic hot water heating since 2 P No k 4 Timer d 00 10 Yes 2 Space nen minutes passed operation will since 1 continue timer till finished 1 are in relation with each other 2 are in relation with each other Storage set point can be automatic value if 6 02 1 HXHD125A7V1B DAIKIN Installation manual VRVIII system indoor unit 4PW62584 1A 11 2010 35 9 7 Multiple set point control The request signals for space heating can be implemented in 2 different ways installer choice If you want to use multiple set point control a temperature reducing thermo ON OFF signal from external room thermostat device TRD is needed The temperature reducing device converts the high inlet water temperature to a reduced water outlet temperature which will be delivered to the appliance s When temperat
9. INFORMATION It is not possible to perform a test run if a forced operation from the outdoor unit is in progress Should forced operation be started during a test run the test run will be aborted Procedure for domestic water heating 1 Check the domestic hot water tank temperature through the remote controller read out mode See Temperature read out mode on page 40 Push the 7 button for 5 seconds The A icon will start blinking with 1 second intervals Keep the unit operating for 20 minutes and check the domestic hot water tank temperature through the remote controller again An increase of the value with 5 C should confirm the domestic water heating operation The operation will stop if the tank storage temperature has been reached 11 MAINTENANCE AND SERVICE In order to ensure optimal availability of the unit a number of checks and inspections on the unit and the field wiring have to be carried out at regular intervals This maintenance should be carried out by your local installer To activities as mentioned below it is only required to remove the front decoration panel To take away the front decoration panel remove the 2 bottom screws and then unhitch the panel execute the maintenance 11 1 Maintenance activities DANGER ELECTRICAL SHOCK See 2 General Safety precautions on page 2 WARNING ELECTRIC SHOCK A Before carrying out any maintenance or repair ac
10. 12 Troubleshooting 12 1 General guidelines 12 2 Opening the unit 12 8 Draining the system 12 4 General symptoms 12 5 Error codes 13 Unit specifications Installation manual System OVENI 44 Recovery vacuuming overview for 1 indoor unit maintenance R410A circuit connections Technical specifications Electrical specifications power supply Electrical specifications multi tenant power supply Thank you for purchasing this product The original instructions are written in English All other languages are translations of the original instructions A CAREFULLY READ THESE INSTRUCTIONS BEFORE INSTALLATION THEY WILL TELL YOU HOW TO INSTALL AND HOW TO CONFIGURE THE UNIT PROPERLY KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE REFERENCE HXHD125A7V1B CONTENTS Page 1 Definitions wee 1 1 Meaning of warnings and symbols nd 1 2 Meaning of used terms ini 2 General Safety precautions i2 Bx Ianirero EE 3 3 1 General information ad 3 2 Combination and options 3 3 3 Scope of the manual ia 3 4 Model identification iid 4 MECOS ONOG sexi iiA EHE Ie QE I er Led Re 4 4 1 Accessories supplied with this unit 2 4 5 Overview eec 4 5 1 Opening the unit 4 5 2 Main components in the unit 5 5 3 Switch box main components und 6 Design of t
11. Installation manual DAIKIN 8 HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 6 3 Application examples Fan coils without domestic hot water tank 5175 Floor heating without domestic hot water tank LLL EELT LEE 12 Outdoor unit Indoor unit Refrigerant heat exchanger Water heat exchanger Compressor Pump Shut off valve Pump Collector field supply Shut off valve By pass valve field supply Collector field supply 10 FCU Fan coil unit field supply 9 By pass valve field supply 11 Electronic expansion valve 10 FHL Floor heating loop field supply 12 Indoor unit refrigerant stop valve 11 Electronic expansion valve C1 Remote controller 12 Indoor unit refrigerant stop valve 1 Individual motorized valve to control loop radiators field C1 Remote controller supply M1 M3 Individual motorized valve to control loop radiators field T1 T3 Individual room thermostat field supply supply A Installation place T1 T3 Individual room thermostat field supply B Living room A Installation place B Living room numuuunumuuuuuuuuuk Outdoor unit Indoor unit Refrigerant heat exchanger Water heat exchanger Compressor ONOOARWN ONOaAhWND Radiator with domestic hot water tan
12. 0 5 C 0 5 C 3 0 C 35 ON OFF Operation Space heating A LS Domestic water heating B c D E F G H J Domestic hot water reheat thermo on request Domestic hot water tank temperature Room temperature thermo on request Remote controller room temperature Domestic hot water lower limit temperature Domestic hot water upper limit temperature maximum possible storage temperature b 03 Domestic hot water reheat minimum temperature b 00 Domestic hot water reheat maximum temperature b 01 Remote controller thermostat set point Storage operation When requesting space heating and domestic water heating storage at the same time domestic water will be heated but as soon as the room temperature drops 3 C from set point space heating will start till 0 5 C above set point then domestic water will be heated again till storage set point 0 5 C 0 5 C 3 0 C ON OFF 75 C F 35 C 4 1 3 2 Operation Space heating A iE Domestic water heating B G H J K Domestic hot water storage thermo on request Domestic hot water tank temperature Room temperature thermo on request Remote controller room temperature Domestic hot water lower limit temperature Domestic hot water upper limit temperature maximum possible storage temperature b 03 Domestic hot water reheat minimum temperature b 00 Domestic hot
13. Not applicable Do not change the default value 1 04 Pump only operation 0 0 25 1 res F Option setup continued 00 Not applicable Do not change the default value 5 01 Not applicable Do not change the default value 0 02 Heat recovery allowance setting 1 0 2 O3 Not applicable Do not change the default value 10 04 Not applicable Do not change the default value 50 HXHD125A7V1B DAIKIN Installation manual VRVIII system indoor unit 39 4PW62584 1A 11 2010 10 FINAL CHECK AND TEST RUN 10 1 Final check Before switching on the unit read the following W When the complete installation and all necessary settings have been carried out be sure that all panels of the unit are closed If this is not the case inserting your hand through the remaining openings can cause serious injury due to electrical and hot parts inside the unit EB The service panel of the switch box may only be opened by a licensed electrician for maintenance purposes In order to purge most of the air out of the system perform a pump operation as described below 1 Change field setting E 04 The default value is 0 W When changing the setting to 1 the pump will operate at low speed pump only the unit will not operate B When changing the field setting to 2 the pump will operate at high speed 2 When air purging is finished change the field setting back to 0 It is the res
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16. Procedure for space heating 1 Checkthe leaving water and entering water temperature through the remote controller read out mode and write down the displayed values See Temperature read out mode on page 40 2 Push the button 4 times so the TEST icon will be displayed 3 Perform the test as follows when no action is performed the user interface will return to normal mode after 10 seconds or by pressing the button once To test the space heating operation push the button to start the test run operation 4 test run operation will end automatically after 30 minutes or when reaching the set temperature The test run operation can be stopped manually by pressing the amp button once If there misconnections or malfunctions an error code will be displayed on the user interface Otherwise the user interface will return to normal operation 5 Toresolve the error codes see 12 5 Error codes on page 45 Installation manual 40 DAIKIN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 Check the leaving water and entering water temperature through the remote controller read out mode and compare them with the values noted with step 1 After 20 minutes of operation an increase of the values should confirm the space heating operation INFORMATION To display the last resolved error code push the button 1 time Push the gt button again 4times to return to normal mode
17. 03 Set point multiple set point 1 required temperature value 35 25 80 1 C 04 Set point multiple set point 2 required temperature 5 65 25 80 1 C b Domestic hot water set points 00 Set point reheat minimum temperature 35 35 65 1 C 01 Set point reheat maximum temperature 45 35 75 1 C 02 Status weather dependent domestic water heating 1 ON 0 1 03 Set point storage temperature 70 45 75 1 C 04 Automatic maximum domestic hot water storage o temperature 70 55 75 1 c C Leaving water temperature limits 00 Set point heating leaving water maximum temperature 80 37 80 1 c 01 Set point heating leaving water minimum temperature 25 25 37 1 c 02 Not applicable Do not change the default value 20 O3 Not applicable Do not change the default value 5 04 Not applicable Do not change the default value 0 d Domestic water heating retention times 00 Set point minimum time for domestic water heating 10 5 20 1 01 Set point maximum time for domestic water heating 30 10 60 5 02 Set point interval minimum stop time of domestic water heating 15 5 80 5 O3 Not applicable Do not change the default value 15 04 Not applicable Do not change the default value 40 E Service mode 00 Vacuum mode R134a 0 0 1 01 Not applicable Do not change the default value 0 02 Not applicable Do not change the default value 0 O3
18. 2 Turn on multiple set point 1 7 03 0 gt 7 03 1 Turn on multiple set point 2 7 04 0 7 04 1 3 Enterthe temperature multiple set point 1 A 03 see below Enter the temperature multiple set point 2 A 04 see below Configuration example Set Field point setting Thermo status 0 65 C Remote OFF ON OFF OFF OFF controller Space 1 45 A 03 OFF ON OFF ON ON OFF Space 2 35 A 04 OFF ON OFF OFF ON ON Resulting heat pump water OFF 65 C 45 C 45 C 35 C Pattern B can also be used to do some primary multi zoning if all set point temperatures are selected the same no temperature reducing device TRD is required Multiple thermo ON signals for 3 rooms can be generated Thermo OFF signals are only valid if all requests are OFF NOTICE Leaving water control is not allowed for pattern B W It is the installers responsibility to make sure no unwanted situations can occur e g too high water temperatures towards floor heating loops etc installers responsibility to make sure the water circuit is well balanced e g when a domestic hot water request occurs there will be sufficient flow towards other appliances as well etc B Daikin does not offer any temperature reducing device TRD This system only provides the possibility to use multiple set points W When space 0 is in thermo OFF but space 1 or 2 are activ
19. C G Reheat minimum water temperature b 00 e g 35 C t Time T Domestic hot water tank temperature See also 2 Automatic setback function on page 27 for more information about setback operation B 5 02 Leaving water setback temperature EB 5 03 Room setback temperature W 5 04 Setting not available Installation manual 28 DAIKIN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 6 Option setup 8 Option setup B 6 00 Domestic hot water tank option EB 8 00 Remote controller temperature control If the domestic hot water tank is installed its operation must be When using the remote control delivered with the unit 2 types of enabled by field setting Default 6 00 0 which means no tank is temperature control are possible Default 8 00 1 which means installed Set 6 00 to 1 if the optional domestic hot water tank is that the remote controller is used as room thermostat so the installed remote controller can be placed in the living room to control the room temperature Set 8 00 to 0 to use the unit in leaving water INFORMATION temperature control When enabling the domestic hot water tank option be 8 01 Setting not available aware that the advised settings become active 8 02 Setting not available B 1 00 1 FUE night pine 8 03 Quiet mode Mm 4 00 1 disinfection function The unit has a quiet mode functionality for which 3 levels can be selected W 6 01
20. Field piping only 4 measure and 2 8 indoor unit recovered R410A amount i l Open stop valve Apply outdoor 2 indoor units unit eem 4 pd 2 21 see ose stop valve edm gan A installation outdoor unit 1 Maintenance manual of vacuuming can start outdoor unit Open stop valve jud 2 Start vacuuming Apply outdoor unit field setting 2 21 see installation useage ec E R410A amount y Cancel outdoor unit field setting 2 21 see installation manual of outdoor unit i Open stop valve s if applicable Restart system a 1 and 2 refers to the legend of the figure in next chapter System overview on page 44 VAVI System indoor nit m iem A3 y i uni 4PW62584 1A 11 2010 System overview 12 2 Opening the unit To facilitate access to the air purge valve thermal cut out 3 way valve thermistors field wiring duct the top decoration panel of the unit can be removed by removing the 2 screws at the rear and then unhitch the panel Both the drain plates can be removed To gain access to the indoor unit at the front side the total Switch box can be removed from the unit To remove the front decoration panel remove the 2 bottom screws and then unhitch the panel Loosen the front screws and unhitch the total switch box Switch off all power supply also outdoor unit power A supply etc before removing the switch box
21. Option setup 8 01 on page 29 in the chapter 9 3 Field settings on page 24 2 When the signal is released again the voltage free contact will open and the unit will restart operation It is therefore important to leave the auto restart function enabled Refer to field setting 8 Option setup 8 01 on page 29 in the chapter 9 3 Field settings on page 24 HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 DAIKIN Installation manual 23 9 START UP AND CONFIGURATION The indoor unit should be configured by the installer to match the installation environment outdoor climate installed options etc and user expertise NOTICE It is important that all information in this chapter is read sequentially by the installer and that the system is configured as applicable 9 1 Pre operation checks WARNING Switch off the power supply before making any connections After the installation of the unit check the following 1 Field wiring Make sure that the field wiring has been carried out according to the instructions described in the chapter 8 Electrical wiring work on page 18 according to the wiring diagrams and according to European and national regulations 2 Fuses and protection devices Check that the fuses and other locally installed protection devices are of the size and type specified in the chapter Electrical specifications power supply on page 46 Make sure that n
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23. if the flux contains fluorine it will deteriorate the refrigerant oil INFORMATION The back plate is not shown on the illustration but it is not needed to take out the back plate for the installation Fixation of piping in case of left connection HXHD125A7V1B DAIKIN Installation manual VRVIII system indoor unit 4PW62584 1A 11 2010 13 Installation on final installation position Connecting the water circuit Wi Place the unit in the appropriate installation location CAUTION The weight of the unit is approximately 116 kg At least two persons are required to lift the unit Use the plates delivered with the unit accessory bag to lift the unit Level the unit to a stable position using the levelling feet INFORMATION Standard installation location of the optional domestic hot water tank is on top of the indoor unit If available service space to left and or right side is limited carefully consider all tank module installation Steps first W Push the sound strips against the ground and fix the side plates with the appropriate screws d an Close the sound panel s and decoration panel s which will be on the wall side and for which fixation is not possible anymore after the unit is put on its final location Water connections must be made The connected flexible pipes need to be connected
24. last programmed command overrules the preceding programmed command and will remain active until the next programmed command occurs Example imagine the actual time is 17 30 and actions are programmed at 13 00 16 00 and 19 00 The last programmed command 16 00 overruled the previous programmed command 13 00 and will remain active until the next programmed command 19 00 occurs So in order to know the actual setting one should consult the last programmed command It is clear that the last programmed command may date from the day before Refer to the operation manual The controller will be switched off operation LED will stop working However the schedule timer icon will stay displayed which means that the domestic heating stays enabled When pushing the amp button The schedule timer for space heating and domestic water heating along with the quiet mode will be stopped and will not start again The schedule timer icon will not be displayed anymore Operation example Schedule timer based on ON OFF instruction When setback function is enabled the setback operation will have priority over the scheduled action in the schedule timer if ON instruction is active If OFF instruction is active this will have priority over the setback function At any time the OFF instruction will have the highest priority B ON OFF Schedule timer Setback function When both setback functi
25. service cover The switch box can now be placed just before the indoor unit The compressor cable located at the backside of the unit can be untied to place the switch box further away from the unit CAUTION sure to always fix the cover with the screws when removing the switch box B Parts inside the unit can be hot and burning is possible B sure to switch off all power supplies before removing the switch box from the unit L 1 1 3 2 3 4 1 Stop valve outdoor unit 2 Stop valve indoor unit m 3 Brazing point 4 Field piping Recovery vacuuming overview for 1 indoor unit maintenance R410A circuit connections 1 1 Pressure reducing valve 2 Nitrogen 2 3 Refrigerant R410A tank siphon system 4 Measuring instrument 5 Vacuum pump 12 TROUBLESHOOTING This section provides useful information for diagnosing and correcting certain troubles which may occur in the unit This troubleshooting and related corrective actions may only be carried out by your local installer 12 1 General guidelines Before starting the troubleshooting procedure carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring WARNING When carrying out an inspection on the switch box of the unit always make sure that the main switch of the unit is Switched off When a safety device was activated stop the unit and find out why the safety d
26. 01 Not applicable Do not change the default value 0 02 Multiple set point pattern 0 A 0 1 03 Multiple set point 1 0 OFF 0 1 04 Multiple set point 2 0 OFF 0 1 8 Option setup 00 Remote controller temperature control 1 ON 0 1 01 Not applicable Do not change the default value 1 02 Not applicable Do not change the default value 0 OFF 03 Status low noise level 1 1 3 1 04 Status freeze up prevention 0 0 2 1 Installation manual DAIKIN HXHD125A7V1B 38 VRVIII system indoor unit 4PW62584 1A 11 2010 Installer setting at variance with default value First Second Default code code Setting name Date Value Date Value value 9 Automatic temperature compensation 00 Leaving water temperature compensation value 6 heating 0 2 2 0 2 C 01 Domestic hot water tank compensation value 0 5 5 0 5 C 02 Thermo ON OFF admission 0 5 5 0 5 C O3 Not applicable Do not change the default value 0 04 Not applicable Do not change the default value 0 A Option setup 00 Current limitation 0 0 2 1 01 Not applicable Do not change the default value 0 02 Set point heating required temperature difference 10 3 45 1 C for leaving and returning water 7
27. 5 03 which is indicated on the user interface display The first digit 5 indicates the first code or field setting group The second and third digit 03 together indicate the second code A list of all field settings and default values is given in the 9 8 Field setting table on page 38 In this list we provided for 2 columns to register the date and value of altered field settings at variance with the default value A detailed description of each field setting is given under 9 5 Detailed description on page 25 Installation manual 24 DAIKIN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 9 To 4 Procedure change one or more field settings proceed as follows 9 5 Detailed description For a summary of all field settings refer to 9 8 Field setting table on page 38 0 Remote control setup EB 0 00 User permission level The remote controller can be programmed to make certain buttons and functions unavailable for the user There are 2 permission levels defined Both levels level 2 and level 3 are 3 5 SETTING 1 basically the same the only difference is that for level 3 no water temperature settings are possible see table below Permission level 2 level 3 Operation ON OFF Operable Operable Domestig water heating operation ON Operable Operable
28. C Leaving water temperature limits To prevent misuse concerning leaving water temperatures it is possible to limit the set points C 00 Maximum leaving water setpoint in heating operation C 01 Minimum leaving water setpoint in heating operation C 02 Setting not available C 03 Setting not available B 04 Setting not available d Domestic water heating retention times The heat pump can only work in either space heating operation or domestic water heating operation No simultaneous operation is possible except when using multiple set point control see chapter 9 7 Multiple set point control on page 36 for more information B 4 00 Set point minimum operation time for domestic water heating B 4 01 Set point maximum operation time for domestic water heating B 4 02 Set point interval minimum stop time of domestic water heating Changing the timer values can have an impact on space heating and domestic water heating heat up timers The default values are proposed but can be changed depending on the complete system installation For a detailed explanation about simultaneous request of space heating and domestic water heating see chapter 9 6 Simultaneous demand of space heating and domestic water heating on page 32 B 4 03 Setting not available H 4 04 Setting not available E Service mode B 00 Vacuum mode When recovering vacuuming of the indoor unit is needed field Setting E 00 can
29. External room thermostat option If the optional external room thermostat is installed its operation 8 03 1 low noise level 1 default must be enabled by field setting Default 6 01 0 which means 8 03 2 low noise level 2 no external room thermostat is installed Set 6 01 to 1 if the optional external room thermostat is installed Ye fae oe p b hing the QUIET MODE The external room thermostat only gives an ON OFF signal to PEE aum Vice A nobia i de Ha imer the heat pump based on the room temperature Because it does ENA Semone a 9 not give continuous feedback information to the heat pump it is W 8 04 Freeze up prevention mM supplementary to the remote controller room thermostat The unit has a freeze up prevention functionality for which function To have a good control of the system and avoiding 3 levels can be selected frequent ON OFF it is advised to use the automatic weather Wi 8 04 0 prevention level 0 default no prevention dependent set point operation W 8 04 1 prevention level 1 W 6 02 Setting not available m 8 04 2 vices 041 2 prevention leve m 6 03 Setting not available The freeze up prevention is only active when the unit is in B 6 04 Benefit kWh rate power supply mode thermo OFF condition If prevention level 1 is enabled the If benefit kWh rate power supply is used the mode must be freeze up prevention will start if the outdoor ambient selected Default 6 04 0 which means no be
30. OFF instruction can be B Before shipping the set values have been set as used in the schedule timer for space heating shown under 9 8 Field setting table on page 38 Refer to the operation manual for details how to program the a sica schedule timer ye DET se The schedule timer for space heating can be programmed in Si itself 2 different ways based on the temperature set point both leaving water temperature and room temperature based on the ON OFF instruction NOTICE When running through the field settings you may notice that there are some more field settings as there are mentioned in the 9 8 Field setting table on page 38 These field settings are not applicable and may not be changed HXHD125A7V1B DAIKIN Installation manual VRVIII system indoor unit 4PW62584 1A 11 2010 25 INFORMATION By default space heating based on temperature set point method 1 is enabled so only temperature shifts are possible no ON OFF instruction Advantage of this method is that you can simply switch off the space heating operation by pushing the amp button without disabling the automatic domestic hot water storage operation e g during summertime when no space heating is required In the following tables both methods on how to interpret the schedule timer are shown Method 1 Space heating based on temperature set point During operation During schedule timer operation the operation LED is l
31. be activated It will force the unit into thermo OFF and will open the expansion valve of the indoor unit R134a circuit so full vacuuming is possible By default E 00 0 set to 1 to enable the vacuum mode NOTICE Do not forget to restore the field setting E 00 to the default value when vacuuming is finished See also 11 3 Vacuuming recovery and maintenance on refrigerant side on page 43 B 01 Setting not available B 02 Setting not available B 03 Setting not available B 04 Pump only operation When commissioning and installing the unit it is very important to get all air out of the water circuit Through this field setting the pump can be operated without actual operation of the unit By doing so this will enhance the air removal from the circuit The pump can operate at different speed W E 04 0 normal operation of the unit default W E 04 1 low pump speed operation W E 04 2 high pump speed operation If you select E 04 1 or 2 and 6 00 1 the unit will activate the domestic hot water 3 way valve This function is a helpful feature to get all air removed out of the system as well in Space heating as in domestic hot water heating E 04 1 or 2 Y Pump operation for 20 minutes space 3 way valve in space heating mode IE 6 00 1 Pump operation for 10 minutes 3 way valve in domestic hot water heating mode See chapter 10 Final check and test run on page 40
32. diagram or connection diagram for connecting this PCB to the unit Demand PCB option An optional EKRP1AHTA demand PCB can be connected to the indoor unit This PCB is needed when Daikin room thermostat EKRTR or EKRTW is installed or when multiple set point control is used and provides the communication with the indoor unit Refer to the demand PCB installation manual for further details Refer to the wiring diagram or connection diagram for connecting this PCB to the unit 3 3 Scope of the manual This manual does NOT include the selection procedure and the water system design procedure Only some precautions and tips and tricks about the design of the water circuit are given in a separate chapter of this manual Once the selection is done and the water system is designed this manual describes the procedures for handling installing and connecting the HXHD125 unit This manual has been prepared to ensure adequate maintenance of the unit and it will provide help if problems occur INFORMATION Refer to the installation manual of the outdoor unit for items not described in this manual The operation of the indoor unit is described in the indoor unit operation manual 3 4 Model identification For European market 1N 220 240 V 50 Hz Series Identification of the unit capacity Refrigerant R134a High temperature floorstanding Inverter Hydro box HXHD125A7V1B VRVIII system ind
33. electrical wires of both remote controllers in the same way like described below Select a master and a slave remote controller by switching the SS1 selector switch S Slave M Master Only the remote controller set as master can work as room thermostat HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 DAIKIN Installation manual 21 Unit Rear part of the remote controller Front part of the remote controller Wired from the rear Wired from the top Notch the part for the wiring to pass through with nippers etc Connect the terminals on top of the front part of the remote controller and the terminals inside the unit P1 to X3M P1 P2 to X3M P2 NOTICE Peel the shield for the part that has to pass through the inside of the remote controller case ww 0 0 3 Reattach the upper part of the remote controller NOTICE Be careful not to pinch the wiring when attaching First begin fitting from the clips at the bottom Connection to a benefit kWh rate power supply NOTICE A benefit kWh rate power supply is only possible for the indoor unit For compressor reliability reasons it is not allowed to connect the outdoor unit to such a power supply Electricity companies throughout the world work hard to provide reliable electric service a
34. for more information F Option setup F 00 Setting not available B F 01 Setting not available B F 02 Heat recovery allowance setting Heat recovery is possible from DX indoor units operating in cooling mode to the domestic hot water tank of this HXHD125 unit If you activate this setting your domestic hot water tank will be automatically heated when other indoor units operate in cooling mode F 02 0 Heat recovery operation is possible F 02 1 or 2 Heat recovery operation is not possible B 03 Setting not available B F 04 Setting not available HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 DAIKIN Installation manual 31 9 6 Simultaneous demand of space heating and 2 domestic water heating Remote controller leaving water temperature control When the reheat temperature is reached the further heat up till storage temperature of the domestic hot water tank will be decided by the running timers which are programmed by the installer 1 Reheatoperation When requesting space heating and domestic water heating reheat at the same time the domestic water will be heated till maximum reheat temperature then space heating will start again ON D OFF G 75 C 35 ON OFF Operation Space heating A EE Domestic water heating B Cc D F G H J Domestic hot water reheat thermo on request Domestic hot water
35. order to keep the refrigerant concentration from exceeding allowable safety limits in the event of a refrigerant leak WARNING Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency EB not climb sit or stand on top of the unit EB Do not place any objects or equipment on top of the unit top plate EB not install the unit in places often used as workplace In case of construction works where a lot of dust is created the unit must be covered EB Do not install the unit in places with high humidity e g bathroom max humidity RH 85 Installation manual 10 DAIKIN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 7 2 Dimensions and service space Dimensions of unit 694 BO INR E DUC 611 804 465 120 15 16 16 precem d OE BEC es HP LP gas pipe connection 12 7 solder R410A Liquid pipe connection 29 52 solder R410A R134a service ports 5 16 flare low R134a service ports 5 16 flare high Pressure gauge Blow off valve Drain valve water circuit Air purge 9 Shut off valves 10 Water filter 11 Water in connection G1 female 12 Water out connection G1 female 13 Control wiring intake knock out hole O37 14 Power supply wiring intake knock out hole O37 15 Knock out hole for refrigerant piping and water piping 16 Levelling feet 17 Liqui
36. supply 16 Shut off valve field supply 17 Radiator field supply 18 Mixing valve field supply 19 Pump field supply 20 Non return valve field supply C1 Remote controller TRD1 Temperature reducing device 1 field supply TRD2 Temperature reducing device 2 field supply ONOahWOND o Refer to chapter 9 7 Multiple set point control on page 36 for more information about the configuration of your system 7 INSTALLATION OF THE UNIT 7 1 Selecting an installation location WARNING Be sure to provide for adequate measures in order to prevent that the unit is used as a shelter by small animals Small animals making contact with electrical parts can cause malfunctions smoke or fire Please instruct the customer to keep the area around the unit clean and clear General precautions on installation location Select an installation site that meets the following requirements W The foundation must be strong enough to support the weight of the unit The floor is flat to prevent vibrations and noise generation and to have sufficient stability This is especially of importance when the optional domestic hot water tank is installed on top of the unit The space around the unit is adequate for maintenance and servicing refer to Service space of the unit on page 12 W The space around the unit allows for sufficient air circulation B There is no danger of fire due to leakage of inflammable gas WB The equ
37. tank temperature Leaving water thermo on request Domestic hot water lower limit temperature Domestic hot water upper limit temperature maximum possible storage temperature b 03 Domestic hot water reheat minimum temperature b 00 Storage operation When requesting space heating and domestic water heating storage at the same time domestic water will be heated according to running timer then space heating will start again according to running timer then domestic water heating will start again according to running timer this will continue till storage set point is reached ON OFF G 75 C F 35 C ON OFF Operation Space heating Domestic water heating Domestic hot water storage thermo on request Domestic hot water tank temperature Leaving water thermo on request Domestic hot water lower limit temperature Domestic hot water upper limit temperature maximum possible storage temperature b 03 Domestic hot water reheat minimum temperature b 00 Domestic hot water reheat maximum temperature b 01 ON ON Domestic hot water reheat maximum temperature b 01 OFF OFF ON ON 1 Maximum operation time for domestic water heating OFF OFF initial 30 minutes d 01 2 Interval minimum stop time for domestic water heating initial 15 minutes d 02 3 Maximum operation time for domestic water heating initial 30 minutes d 01 Installation manual DAIKIN HXHD125A7V1B 32 VRVIII sy
38. the lower temperature appliances have to be protected against the higher water temperature by a temperature reducing valve The configuration of pattern A allows 2 space heating set points and one same as in the classic design domestic hot water set point Installation manual DAIKIN HXHD125A7V1B 36 VRVIII system indoor unit 4PW62584 1A 11 2010 NOTICE Ifthe system is configured according to pattern A nor the remote controller room thermostat function default OFF if multiple set point is selected nor the external room thermostat as replacement of the remote controller room thermostat function may be used The remote controller water temperature value is ignored when pattern A is active It is the installers responsibility to make sure no unwanted situations can occur e g too high water temperatures towards floor heating loops etc B Itis installers responsibility to make sure the water circuit is well balanced e g when a domestic hot water request occurs there will be sufficient flow towards other appliances as well etc B Daikin does not offer any temperature reducing device TRD This system only provides the possibility to use multiple set points It is advised to only use the automatic storage functionality for domestic water heating when applying pattern A with a high set point temperature Multiple set point control according to pattern B The basic setup of multiple set point patter
39. to the piping that leads to the heat emitters as follows 1 Field piping 2 To heat emitters NOTICE Be careful not to deform the unit piping by using excessive force when connecting the piping Deformation of the piping can cause the unit to malfunction If air or dust gets in the water circuit problems may occur Therefore always take into account the following when connecting the water circuit WB Use clean pipes only WB Hold the pipe end downwards when removing burrs Cover the pipe end when inserting it through wall so that dust and dirt enter B Use a good thread sealant for the sealing of the connections EB When using non brass metallic piping make sure to insulate both materials from each other to prevent galvanic corrosion WB Because brass is a soft material use appropriate tooling for connecting the water circuit Inappropriate tooling will cause damage to the pipes NOTICE B The unit is only to be used in a closed water system Application in an open water circuit can lead to excessive corrosion of the water piping B Never use Zn coated parts in the water circuit Excessive corrosion of these parts may occur as copper piping is used in the unit s internal water circuit INFORMATION When using a 3 way valve or a 2 way valve in the water circuit the maximum changeover time of the valve shall be less than 60 seconds Installation manual 14 DAIK
40. 0 TRD Temperature reducing device 2 Turn on multiple set point 1 7 03 0 gt 7 03 1 Space 1 Space 1 Turn on multiple set point 2 7 04 0 7 04 1 Balancing bottle 3 Enterthe temperature multiple set point 1 A 03 see below Enter the temperature multiple set point 2 A 04 see below B During space heating operation water is provided based on the Configuration example selected water temperature set point for space heating A Set Field shut off valve field supply must be installed in the domestic hot point setting Thermo status water tank coil circuit The valve must be closed to protect the Domestic 79ec b 03 OFF ON OFF OFF OFF domestic hot water tank from cooling down by lower temperature hot water water going through the coil during space heating Connection Space 1 65 C 03 OFF ON OFF lon OFF n ntrol of this shut off valve is the reponsability of the dos b P y Space 2 35 C 04 OFF ON OFF ON OFF ON z Resulting heat t OFF 70 C 65 C 65 35 C EB During domestic water heating operation the water temperature pee ciet c 4 set point is normally higher than the set point requested during a temperature needed to reach this set point of course is higher space heating operation The valve allowing water to enter the domestic hot water tank coil is open The heat pump will deliver water with a higher temperature which is needed for production of the domestic hot water At that time
41. 12 DAIKIN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 B Connect the flexible pipes to the indoor unit connection Installation of accessory pipes for refrigerant piping Depending on left or right connection different accessory pipes are delivered with the unit refer to 4 Accessories on page 4 The refrigerant piping needs to be brazed NOTICE Notice for brazing Make sure to blow through with nitrogen when brazing Blowing through with nitrogen prevents the creation of large quantities of oxidized film on the inside of the piping An oxidized film adversely affects valves and compressors in the refrigerating system and prevents proper operation The nitrogen pressure should be set to 0 02 MPa i e just enough so it can be felt on the skin with a pressure reducing valve 1 2 3 S16 TIT 1 Refrigerant piping 2 Partto be brazed 3 Taping 4 Hands valve 5 Pressure reducing valve 6 Nitrogen Do not use anti oxidants when brazing the pipe joints Residue can clog pipes and break equipment Do not use flux when brazing copper to copper refrigerant piping Use phosphor copper brazing filler alloy BCuP which does not require flux Flux has an extremely harmful influence on refrigerant piping systems For instance if chlorine based flux is used it will cause pipe corrosion or in particular
42. IN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 Precautions when connecting field piping and regarding insulation The complete water circuit inclusive all piping must be insulated to prevent reduction of the heating capacity If the indoor ambient temperature is higher than 30 C and the humidity is higher than RH 80 then the thickness of the insulation materials should be at least 20 mm in order to avoid condensation on the surface of the insulation Fix the indoor unit refrigerant connections NOTICE B Consider carefully the installation location of the flexible water inlet pipe According to the direction of the water flow the water filter must be positioned as shown in the figure TE B Provide sufficient space allowing easy access to clean the water filter and regular operation check of the safety valve B Provide a flexible hose for pressure relief valve blow off field supply Consider to support the water inlet pipe and water outlet pipe so not to stress the field piping INFORMATION For servicing purposes it is needed to be able to evacuate the refrigerant circuit Therefore stop valves are foreseen as accessories These stop valves must be installed near to the unit and on an accessible place when service is needed the stop valves need to be closed and equipment for recovery vacuuming has to be connected Decide where to install the stop valves and posit
43. ION When installing field supply or option cables always make sure that the switchbox is placed before the unit This will make it possible to remove the switchbox easily during service Route the wires into the unit as follows To avoid electric noise problems be sure that cables are put in the correct bundle as mentioned on the figure Be sure to fix the cable with cable ties to the cable tie mountings to ensure strain relief and to make sure that it does not come in contact with the piping and sharp edges NOTICE Do not push or place redundant cable length in the unit Installation manual 20 DAIKIN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 8 6 Connection Use the appropriate cables connect the power supply multi tenant power supply and communication cable s to the appropriate terminals as shown below Power supply Multi tenant power supply Transmission wiring User interface wiring Stress relief 1 2 3 4 5 Refer also to the wiring diagram for further details For the connections of optional PCB s please refer to the respective installation manual WARNING The length of the conductors between the power supply stress relief and the terminal block itself must be such that the current carrying wires are tautened before the earth wire is in case the power supply i
44. Setting the leaving water temperature Operable Setting the room temperature Operable Operable Quiet mode ON OFF Weather dependent set point operation Operable ON OFF n Setting the clock 1 Press the button for a minimum of 5 seconds to enter FIELD Programming the schedule inet SET MODE SM The SETTING icon 3 will be displayed The current selected field Schedule timer operation ON OFF Operable Operable setting code is indicated 8 88 2 with the set value displayed to Field settings the right 88 8 1 Error code display Operable Operable 2 Press the amp D 4 button to select the appropriate field setting Test operation first code By default no level is defined so all buttons and functions are 3 Press the amp b v button to select the appropriate field setting operable second code The actual permission level is determined by field setting For 4 Press the TIMERL4_ button and TIMERL _ button to change Nae dT Se aid ME 0 00 to 2 for permission the set value of the select field setting i g Once the field setting is set the chosen permission level is not 5 the new value by pressing the amp button yet active Enabling the selected permission level is done by simultaneously pressing buttons OC A and immediately 6 Repeat step 2 through 4 to change other field settings as followed by simultaneously pressing buttons fi2 and DE and required keeping all 4 button
45. XHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 3 INTRODUCTION 3 1 General information This installation manual concerns VRVIII indoor unit air to water inverter heat pump units of the Daikin HXHD125 series These units are intended for indoor installation and aimed for commercial and public buildings The unit is designed for floor standing heating operation HXHD125 units have a heating capacity of 14 kW The indoor units are designed to work in heating mode at indoor ambient temperatures from 5 C to 30 C During heating operation the unit can heat up the water to temperatures of 25 C to 80 C 3 2 Combination and options The HXHD125 units can only be combined with an outdoor REYAQ unit During heating operation the unit can be combined with space heating radiators field supply fan coil units option or field supply or floor heating field supply The remote controller with room thermostat functionality is standard supplied with this unit to control your installation Domestic hot water tank option An optional EKHTS U 200AC or EKHTS U 260AC domestic hot water tank can be connected to the indoor unit The domestic hot water tank has a water volume of 200 or 260 Refer to the domestic hot water tank installation manual for further details NOTICE In case there is no instruction in the EKHTS U AC installation manual on how to connect the domestic hot water tank to the HXHD125 u
46. age The compensated temperature 2 measured temperature plus compensation value is then used for controlling the system and will be displayed in the temperature read out mode EB 9 00 Leaving water temperature compensation value for heating operation W 9 01 Domestic hot water tank compensation value B 9 02 Thermo ON OFF admission By changing this value the operation range for space heating operation can be modified If the ambient temperature becomes higher than 24 C the value of 9 02 no space heating is possible Space heating can be requested as long as the ambient temperature is lower than 20 C the value of 9 02 uum ii No space heating operation possible Request for space heating possible Hysteresis area Ambient temperature W 9 03 Setting not available W 9 04 Setting not available A Option setup W 00 Current limitation This setting provides the possibility to limit the power consumption of the indoor unit as follows A 00 0 16 5 A default A 00 1 13 2 A 48096 B A 00 2 10 7 A 65 The indoor unit current is limited the outdoor unit is slave and will also reduce its power consumption consequently if other indoor units loads correspond However transient conditions with higher power consumption are possible B A 01 Setting not available W 02 Temperature difference for leaving and returning water in heating mode The unit is desig
47. capacity heating kW 14 is the air purge open Casing material Pre coated sheet metal Make sure the domestic hot water tank is filled with water Dimensions HxWxD mm 705x600x695 Make sure water flow is Weight possible open all valves in the with packaging kg 100 8 circuit without packagin kg 92 Make sure the water filter is Wai m ES 2 not blocked ater Curse ions Make sure all refrigerant stop water inlet outlet G 1 female valves are open water inlet outlet material brass Contact your local dealer piping diameter inch 1 E3 Thermal cut out error Q2L Reset the thermal cut out maximum working pressure bar 4 Contact your local dealer Refrigerant connections EH Low pressure error B1PL Check wiring connections on HP LP gas side diameter mm 12 7 outdoor unit and indoor unit liquid side diameter mm 9 52 Contact your locahdealer Heating water system volume I 20 200 ES Overload activation of Contact your local dealer Refrigerant type R134a compressor M1C Pump ES R134a expansion valve error Check wiring connections type DC motor Tec Contact your local dealer no of speed inverter controlled F3 Discharge temperature error Contact your local dealer Sound pressure level dBa 42 J3 Discharge thermistor error R6T Check wiring connections Pressure relief valve water circuit bar 3 Contact your local dealer Operation range water side CC e 45 R134a liquid thermi
48. d stop valve 29 52 solder R410A 18 HP LP stop valve 012 7 solder R410A ONO hWN HXHD125A7V1B DAIKIN Installation manual VRVIII system indoor unit 1 1 4PW62584 1A 11 2010 Service space of the unit Space required for switch box removal Left installation top view Right installation top view Space required for wiring in case of right installation 7 3 Inspecting handling and unpacking the unit At delivery the unit must be checked and any damage must be reported immediately to the carrier s claims agent Bring the unit as close as possible to its final installation position in its original package to prevent damage during transport Unpack the indoor unit completely according to the instructions mentioned on the unpacking instructions sheet Check if all indoor unit accessories see 4 Accessories on page 4 are enclosed 7 4 Installing the unit WARNING Tear apart and throw away plastic packaging bags so that children will not play with them Children playing with plastic bags face danger of death by suffocation INFORMATION Installation shall be done by an installer the choice of materials and installation shall comply with the applicable legislation In Europe the EN378 is the applicable standard that shall be used Preparation before installation on final installation place After unpacking the unit and before installing the unit on its final instal
49. ded leaving water temperature Refer to the graph below 2 50 225 2 00 1 75 1 50 A 125 1 00 0 75 0 50 0 00 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 B 80 C water temperature 65 C water temperature 35 C water temperature Never change the pre pressure of the system to a value lower than 0 3 bar A Pre pressure bar B System water volume I Installation manual 16 DAIKIN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 How to check if the pre pressure of the system needs to be changed B Step 1 define the needed leaving water temperature in the system e g 65 C 1 Connect the water supply to a fill valve field supply Step 2 define the maximal water volume in the system with the default pre pressure of 1 bar Charging water 2 Make sure to open the automatic air purge 3 When a tank is used a 3 way valve needs to be installed refer to the manual of the domestic hot water tank for details 4 Fil with water until the manometer indicates a pressure of approximately 2 0 bar 200 Remove air in the circuit as much as possible using the air purge valves NOTICE B During filling it might not be possible to remove all air in the system Remaining air will be removed through the automatic air purge valves during first operati
50. e space 0 will be fed with water at a temperature equal to the highest set point of spaces 1 and 2 This can lead to unwanted heating of space O 1 When using the automatic weather dependent function for setting of space 0 you have to make sure that the lowest possible temperature of the space 0 floating set point including the possible negative shift value is higher than the temperature set point of spaces 1 and 2 This means that field setting 3 03 of space 0 needs to be higher than temperature set point of spaces 1 and 2 HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 DAIKIN Installation manual 37 9 8 Field setting table Installer setting at variance with default value First Second Default code code Setting name Date Value Date Value value 0 Remote control setup O0 User permission level 2 2 3 1 01 Room temperature compensation value 0 5 5 0 5 C 02 Not applicable Do not change the default value 1 03 aS Pace ipu iE timer mode 1 ON B 04 Not applicable Do not change the default value 1 1 Automatic storage timing for domestic water heating 00 Status night time storage 1 ON 0 1 01 Night time storage start time 1 00 0 00 23 00 1 00 hour 02 Status day
51. e of the expansion vessel When it is required to change the default pre pressure of the expansion vessel 1 bar keep in mind the following guidelines Use only dry nitrogen to set the expansion vessel pre pressure B Inappropriate setting of the expansion vessel pre pressure will lead to malfunction of the system Therefore the pre pressure should only be adjusted by a licensed installer INFORMATION To set the pre pressure the expansion vessel needs to be accessed from the front or the right HXHD125A7V1B DAIKIN Installation manual VRVIII system indoor unit 1 7 4PW62584 1A 11 2010 8 ELECTRICAL WIRING WORK 8 1 Precautions on electrical wiring work WARNING Electrical installation All field wiring and components must be installed by an installer and must comply with the applicable legislation NOTICE Electrical wiring work recommendations To persons in charge of electrical wiring work Do not operate the unit until the refrigerant piping is complete Running the unit before the piping is ready will break the compressor DANGER ELECTRICAL SHOCK See 2 General Safety precautions on page 2 WARNING A main switch or other means for disconnection having a contact separation in all poles must be incorporated in the fixed wiring in accordance with the applicable legislation gt B Use only copper wires All field wiring must be carried out in accordanc
52. e with the wiring diagram supplied with the unit and the instructions given below B Never squeeze bundled cables and be sure that it does not come in contact with the non insulated piping and sharp edges Be sure no external pressure is applied to the terminal connections B Power supply wires must be attached securely f the power supply has a missing or wrong N phase equipment will break down Be sure to establish an earth Do not earth the unit to a utility pipe surge absorber or telephone earth Incomplete earth may cause electrical shock Be sure to install an earth leakage protector in accordance with the applicable legislation Failure to do so may cause electric shock or fire sure to use a dedicated power circuit never use a power supply shared by another appliance B When installing the earth leakage protector be sure that it is compatible with the inverter resistant to high frequency electric noise to avoid unnecessary opening of the earth leakage protector As this unit is equipped with an inverter installing a phase advancing capacitor not only will deteriorate power factor improvement effect but also may cause a capacitor abnormal heating accident due to high frequency waves Therefore never install a phase advancing capacitor Be sure to install the required fuses or circuit breakers NOTICE The equipment described in this manual may cause electronic noise generated f
53. ed valves it is important that be installed so that normal servicing can be accomplished this minimum water volume is kept even if all the valves are without draining the system closed B Drain taps must be provided at all low points of the system to permit complete drainage of the circuit during maintenance or Example See 6 3 Application examples on page 9 service to the unit A drain valve is provided in the unit to drain AlB AIA the water from the unit water system Be sure to provide a proper drain for the pressure relief valve to avoid any water coming into contact with electrical parts 1 Wi Air vents must be provided at all high points of the system The vents shall be located at points which are easily accessible for servicing An automatic air purge is provided inside the indoor unit Check that this air purge valve is not tightened too much so that automatic release of air in the water circuit remains possible 1211 2 3 11 care that the components installed in the field piping can withstand the water pressure and temperature Always use materials which are compatible with the water used in the system and with the materials used on the unit B Select piping diameter in relation to required water flow and available ESP of the pump When designing the hydraulic system always consider the available static pressure of the indoor unit
54. either a fuse nor a protection device has been bypassed 3 Earth wiring Make sure that the earth wires have been connected properly and that the earth terminals are tightened 4 Internal wiring Visually check the switch box and the inside of the unit on loose connections or damaged electrical components 5 Installation Check that the unit is properly installed to avoid abnormal noises and vibrations when starting up the unit 6 Damaged equipment Check the inside of the unit on damaged components or squeezed pipes 7 Refrigerant leak Check the inside of the unit on refrigerant leakage If there is a refrigerant leak try to repair the leak recovery repair and vacuuming needed If it is impossible to repair by yourself perform a recovery operation as mentioned in chapter 11 3 Vacuuming recovery and maintenance on refrigerant Side on page 43 and call your local dealer Do not touch any refrigerant which has leaked out of refrigerant piping connections This may result in frostbite 8 Vacuuming and refrigerant charging Refer to the outdoor unit manual for more details 9 Water leak Check the inside of the unit on water leakage In case there is a water leakage try to repair the leak If it is impossible to repair by yourself close the water inlet and water outlet shut off valves and call your local dealer 10 Power supply voltage Check the power supply voltage on the local supply panel The voltage must cor
55. emperature b 00 e g 35 C Time Domestic hot water tank temperature B 0 02 Status defines whether the weather dependent domestic water heating is turned ON 1 or OFF 0 If enabled the storage set point will be set weather dependent In case of a higher ambient temperature e g during summer time the cold supply water to the mixing tap e g shower bath will also have a higher temperature This makes that the temperature of the hot water from the domestic hot water tank may be lower to reach the same water mixing temperature from the shower or bath mixing tap In this way with a lower domestic hot water tank temperature setting the comfort level can be kept the same but with a lower energy consumption 55 C 15 C 25 C A Ambient temperature T Domestic hot water storage temperature INFORMATION The maximum setting temperature for domestic hot water can be changed with field setting b 04 Other settings are fixed Installation manual 30 DAIKIN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 B 0 03 Set point storage temperature see figure above INFORMATION If weather dependent domestic water heating is enabled b 02 the storage temperature will be set automatically and the field setting b 03 will be of no importance B 0 04 Maximal domestic hot water setting during weather depending domestic hot water setpoint Refer to the figure above
56. er to a specific temperature INFORMATION If a domestic hot water tank is installed the disinfection function is enabled by default W 4 00 Status defines whether the disinfection function is turned ON 1 or OFF 0 W 4 01 Operation interval day of the week at which the domestic water should be heated W 4 02 Start time time at which the disinfection operation is started Even if all schedule timers are de activated and there is no reheat function active the disinfection function will operate if a domestic hot water tank is installed and field setting 4 00 is set to ON WARNING The disinfection function field settings must be configured by the installer according to national and local regulations Refer to 5 Automatic setback and disinfection set point for temperature set points 5 Automatic setback and disinfection set point See also 4 Disinfection function on page 28 for more information about the disinfection operation W 5 00 Set point disinfection water temperature to be reached W 5 01 Interval time period defining how long the disinfection temperature set point should be maintained C A Storage operation if activated B Reheat operation if activated Disinfection operation if activated Field settings D Disinfection operation temperature 5 00 e g 70 C E Hot water storage temperature b 03 e g 60 C F Reheat maximum water temperature b 01 e g 45
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58. evice was activated before resetting it Under no circumstances safety devices may be bridged or changed to a value other than the factory setting If the cause of the problem can not be found call your local dealer If the pressure relief valve is not working correctly and is to be replaced always reconnect the flexible hose attached to the pressure relief valve to avoid water dripping out of the unit Installation manual DAIKIN 44 HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 12 3 Draining the system If draining is needed connect the drain hose 2 to the drain valve 1 as described in the figure below and open the drain valve 1 12 4 General symptoms Symptom 1 The unit is turned on dam LED is lit but the unit is not heating as expected POSSIBLE CAUSES CORRECTIVE ACTION The temperature setting is not correct Check the controller set point The water flow is too low Check that all shut off valves of the water circuit are completely open Check if the water filter needs cleaning Make sure there is no air in the System purge air Check on the manometer that there is sufficient water pressure The water pressure must be 70 3 bar water is cold 220 3 bar Symptom 3 The water pressure relief valve opens POSSIBLE CAUSES CORRECTIVE ACTION The expansion vessel is broken Replace the expansion vessel The water volume in the i
59. f valve by turning the red knob on the valve counter clockwise f you do not hear a clacking sound contact your local dealer In case the water keeps running out of the unit close both the water inlet and outlet shut off valves first and then contact your local dealer 3 Indoor unit switch box Carry out a thorough visual inspection of the switch box and look for obvious defects such as loose connections or defective wiring 4 Water pressure Check if the water pressure is above 1 bar If necessary add water 5 Water filter Clean the water filter 11 2 Important information regarding the refrigerant used This product contains fluorinated greenhouse gases covered by the Kyoto Protocol Do not vent gases into the atmosphere Refrigerant type R134a GWP value 1300 GWP global warming potential INFORMATION National implementation of EU regulation on certain fluorinated greenhouse gases may require to provide the appropriate official national language on the unit Therefore an additional multilingual fluorinated green house gases label is supplied with the unit Sticking instructions are illustrated on the backside of that label Installation manual DAIKIN 42 HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 11 3 Vacuuming recovery and maintenance on refrigerant side This flow chart indicates the main items and actions which have to be considered during vacuuming recovery opera
60. he water circuit wal 6 1 Selection of the type of heat emitters mif 6 2 General precautions concerning water circuit 6 3 Application examples m Floor heating without domestic hot water tank 1139 Radiator with domestic hot water tank T Fan coils without domestic hot water tank mE Application example with several heat emitters 7 Installation of the unit 7 1 Selecting an installation location General precautions on installation location 7 2 Dimensions and service space Dimensions of unit Service space of the unit 7 3 Inspecting handling and unpacking the unit Installing the unit tnt Preparation before installation on final installation place 12 Installation on final installation position Connecting the water circuit Fix the indoor unit refrigerant connections Close the unit 7 5 Leak test and vacuuming drying R410A circuit 7 6 Water piping Checking the water volume and expansion vessel pre pressure Setting the pre pressure of the expansion vessel Charging water 8 Electrical wiring work 8 1 Precautions on electrical wiring work 8 2 Internal wiring Parts table 8 3 System overview of field wiring 8 4 Requirements 8 5 Routing 8 6 Connection Installation and connection of the remote controller Connection to a benefit kWh rate power supply i 9 Start up and config rali hi ciiin ctio 9 1 Pre operation checks 9 2 Final air purging 9 8 Field settings 9 4 Proced
61. heck that the expansion vessel is not broken Check that the setting of the pre pressure of the expansion vessel is correct refer to Setting the pre pressure of the expansion vessel on page 17 R3T R410A liquid thermistor error Check wiring connections Contact your local dealer t5 Domestic hot water tank thermistor error R2T Check wiring connections Check if the domestic hot water option is turned active refer to field setting 6 00 Contact your local dealer thermistor error t3 Returning water thermistor error Check wiring connections R4T Contact your local dealer Heating leaving water thermistor Check wiring connections error R5T Contact your local dealer Cu Remote controller thermostat Contact your local dealer Ei Compressor PCB error Contact your local dealer HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 DAIKIN Installation manual 45 13 UNIT SPECIFICATIONS Error code Failure cause Corrective action E3 High pressure error S1PH Check wiring connections on n n outdoor unit and indoor unit Technical specifications Make sure the circuit is filled with water no air inside e g Nominal
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63. iC V8C Ferrite core noise filter X1M X3M Terminal strip X1Y XAY oe Connector A P PCB terminal strip Z1F Z5F A P Noise filter Included in option kit field supplied INFORMATION The wiring diagram on the indoor unit is only for the indoor unit For the outdoor unit refer to the wiring diagram of the outdoor unit 8 3 System overview of field wiring Field wiring consists out of power supply multi tenant power supply indoor outdoor communication transmission wiring wiring of the user interface wiring for connection of options and field supply accessories CAUTION Carefully install multi tenant power supply This power supply will guarantee correct outdoor unit operation if one tenant shuts of power supply If the multi tenant power supply is not installed the outdoor unit will stop operating if one tenant shuts off the main power supply B If during service the main power supply is cut off for safety of electric shock make sure that also the multi tenant power supply is cut off HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 DAIKIN Installation manual 19 8 4 Requirements A power supply see table below must be provided for connection of the unit The power supply must be protected with the required safety devices i e a main switch a slow blow fuse on each phase and an earth leakage protector in accordance wi
64. igures below also refer to 9 8 Field setting table on page 38 6 04 1 6 04 2 Benefit kWh rate power supply box Receiver controlling the signal of the electricity company Benefit kWh rate power supply Voltage free contact to indoor unit Normal kWh rate power supply Fuse field supply oa hwnd NOTICE In case of benefit kWh rate power supply installation remove the wiring bridges on X2M before installing the normal kWh rate power supply Type 1 The benefit kWh rate power supply is of the type that power supply is not interrupted Type 2 The benefit kWh rate power supply is of the type that power supply will be interrupted after elapse of time Type 3 The benefit kWh rate power supply is of the type that power supply is interrupted immediately When parameter 6 04 1 at the moment that the benefit kWh rate signal is sent by the electricity company that contact will open and the unit will go in forced off mode When parameter 6 04 2 at the moment that the benefit kWh rate signal is sent by the electricity company that contact will close and the unit will go in forced off mode 1 When the signal is released again the voltage free contact will close and the unit will restart operation It is therefore important to leave the auto restart function enabled Refer to field setting 8
65. ion the stop valves on the wall by using the support plate NOTICE It is very important to keep good visibility of the manometer The position of the manometer can be changed as shown in the figure below Make sure that the capillary tube does not come in contact with sharp edges and prevent bending of the capillary tube as much as possible Change the position of the manometer when piping is on the left side of the unit B Mounting of the manometer against a wall the 2 screws are field supply 1 Support plate 2 Stop valve 3 To outdoor unit Finalise the refrigerant piping work connect the prepared refrigerant piping to the piping coming from the outdoor unit Refer to the above cautions for brazing and to the outdoor unit installation manual INFORMATION Only 2 pipes liquid and HP LP gas pipe need to be connected Close the unit 1 Put the sound bottom plate at the bottom of the unit and fix it with the appropriate screws HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 DAIKIN Installation manual 15 2 3 Fix the top panel on the unit with the appropriate screws Stick the top plate insulation accessory at the inside of the top decoration panel according to the figure below Fix the top decoration panel on top of the unit using the appropriate Screws In case a domestic hot water tank optional is installed refer to the domes
66. ipment is not intended for use in a potentially explosive atmosphere Select the location of the unit in such a way that the sound generated by the unit does not disturb anyone and the location is selected according the applicable legislation If the sound is measured under actual installation conditions the measured value will be higher than the sound pressure level mentioned in 13 Unit specifications on 46 due to environmental noise and sound reflections Choose the installation location carefully and do not install in a sound sensitive environment e g living room bedroom All piping lengths and distances have been taken into consideration For requirements of piping length for the refrigerant piping refer to the outdoor unit installation manual Maximum allowable distance between the domestic hot water tank and the indoor unit only for installations with domestic hot water tank INFORMATION If the installation is equipped with a domestic hot water tank optional please refer to the domestic hot water tank installation manual care that in the event of a water leak water cannot cause any damage to the installation space and surroundings EB installation location is frost free Be sure that sufficient precautions are taken in accordance with the applicable legislation in case of refrigerant leakage EB When installing the unit in a small room take measures in
67. it continuously When pushing 1 The schedule timer for space heating will stop and will the amp button i not start again The controller will be switched off operation LED will Stop working However the schedule timer icon will stay displayed which means that the domestic water heating stays enabled When pushing the amp button The schedule timer for space heating and domestic water heating along with the quiet mode will be stopped and will not start again The schedule timer icon will not be displayed anymore a For leaving water temperature and or room temperature Operation example Schedule timer based on temperature set points When setback function is enabled the setback operation will have priority over the scheduled action in the schedule timer Schedule timer Setback function When both setback function and schedule timer are enabled Setback function Time Temperature set point 1 2 3 A t T El Room temperature Leaving water temperature Method 2 Space heating based on ON OFF instruction During operation When the schedule timer switches space heating OFF the controller will be switched off operation LED will stop working Note that this has no influence on the domestic water heating When pushing n The schedule timer for space heating will stop when the eS button active at that moment and will start again at the next scheduled ON function The
68. k FA E n mE 1 1 1 TL Mq 14 5 8 9 Outdoor unit Indoor unit Refrigerant heat exchanger Water heat exchanger Compressor Pump Shut off valve Motorized 3 way valve optional Domestic hot water tank optional Collector Radiator field supply Electronic expansion valve By pass valve field supply Indoor unit refrigerant stop valve Remote controller master Remote controller slave Installation place Living room ONOa hWnd OO 5 HXHD125A7V1B DAIKIN Installation manual VRVIII system indoor unit 9 4PW62584 1A 11 2010 Application example with several heat emitters Using different heat emitters means using different water set points for the system Such installations must be done using a balancing bottle and each kind of heat emitter should have a specific pump 13 1415 16 14 17 45 C FCU Outdoor unit Indoor unit Electronic expansion valve Refrigerant heat exchanger Water heat exchanger Pump Motorized 3 way valve optional Domestic hot water tank optional Compressor 10 Shut off valve 11 Balancing bottle field supply 12 FHL Floor heating loop field supply 13 Shut off valve field supply 14 By pass valve field supply 15 FCU Fan coil unit field
69. l the 3 way valve in case of domestic hot water tank Standard High pressure sensor Low pressure sensor Electronic expansion valve R410A 3 way valve Electronic expansion valve R134a Pump Thermistor protector water piping High pressure switch Installation manual 6 DAIKIN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 5 3 Switch box main components 18212 6 15 1710 16 15 OMAN OA RWHNDH 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Main PCB Control PCB Inverter PCB QA PCB Filter PCB Multi tenant PCB Digital I O PCB optional Demand PCB optional Terminal block X1M Main terminal block which allows easy connection of field wiring for power supply Terminal block X2M Field wiring terminal block for high voltage connections Terminal block X3M Field wiring terminal block for low voltage connections DC connector X1Y X4Y AC connector X3Y Pump connector X2Y Cable tie mountings The cable tie mountings allow to fix the field wiring with cable ties to the switch box to ensure strain relief Power wiring entry High voltage field wiring entry Low voltage field wiring entry Compressor cable entry Interface relay K1A Interface relay K2A Interface relay K3A Wiring bridges 6 DESIGN OF THE WATER CIRCUIT The purpose of this chapter is to give guidelines for the design of the water circuit Precautions and guidelines that have impact to the
70. lation position following preparations need to be done EB Open the unit Refer to the 5 1 Opening the unit on page 4 W Knock out the needed knockout holes This installation instruction consists of installation of W refrigerant piping W water piping and W electrical wiring For each of these a dedicated knock out hole is foreseen at the backside of the unit 1 Knock out hole for refrigerant piping 2 Knock out hole for electrical wiring 3 Knock out hole for water piping A Left installation B Right installation NOTICE Knockout holes are foreseen at both sides of the unit Pay attention to knock out the correct holes depending on your installation location B Refrigerant piping and water piping must go through different knockout holes The electrical wiring must always enter the unit at the upper knockout holes at the left side of the unit see the figure above Do NOT use the lower knockout holes To punch a knockout hole punch it with a hammer remove all burrs and install the supplied grommets see 4 Accessories on page 4 Knockout hole Burr Grommet Putty or insulation materials field supply Before installation of the unit to its final position it is advised to connect the water flexible pipes and refrigerant pipes to the unit delivered as accessory Take out all accessories from the indoor unit Installation manual
71. mestic hot water lower limit temperature G Domestic hot water upper limit temperature G Domestic hot water upper limit temperature maximum possible storage temperature b 03 maximum possible storage temperature b 03 H Domestic hot water reheat minimum temperature b 00 H Domestic hot water reheat minimum temperature b 00 J Domestic hot water reheat maximum temperature b 01 J Domestic hot water reheat maximum temperature b 01 K External room thermostat set point K External room thermostat set point L External room thermostat ON OFF hysteresis L External room thermostat ON OFF hysteresis ON ON ON ON OFF OFF OFF OFF 1 Maximum operation time for domestic water heating initial 30 minutes d 01 2 Interval minimum stop time for domestic water heating initial 15 minutes d 02 3 Maximum operation time for domestic water heating initial 30 minutes d 01 HXHD125A7V1B Installation manual VRVIII system indoor unit 4PW62584 1A 11 2010 DAIKIN 33 Remote controller room temperature control 2 When the reheat temperature is reached the further heat up till storage temperature of the domestic hot water tank will be decided by the remote controller room thermostat in order to prevent the room temperature to drop too much 1 Reheatoperation When requesting space heating and domestic water heating reheat at the same time the domestic water will be heated till maximum reheat temperature then space heating will start again
72. mperature difference between entering water and leaving water This will define the water flow in the system Finally the piping layout from the heat source to the different heat emitters needs to be drawn This will finally define following important parameters B Minimal water volume in the system B Maximal water volume in the system EB Minimal and maximal water flow in system B Maximal pressure drop in the system NOTICE In refurbishment applications the water system will already be fixed It is utmost important for these kind of installations to know the parameters mentioned above HXHD125A7V1B DAIKIN VRVIII system indoor unit 4PW62584 1A 11 2010 Installation manual 7 6 2 General precautions concerning water circuit Before continuing the installation of the unit check the following points The maximum water pressure is 4 bar NOTICE In most applications this miminum water volume will have a satisfying result In critical processes or in rooms with a high heat load W maximum water temperature is 80 C though extra water volume might be required Provide adequate safeguards in the water circuit to be sure that the water pressure will never exceed the maximum allowable NOTICE working pressure 4 bar When circulation in each space heating radiator loop is Shut off valves from flexible hoses delivered with the unit should controlled by remotely controll
73. n B is the same as a normal classic design so again no domestic water heating and space heating is possible simultaneously Multiple set point pattern B is focussed on space heating operation and allows using multiple water set points in combination with the remote controller or external room thermostat The configuration of pattern B allows 3 space heating set points and 1 domestic hot water set point The request signals for space heating can be implemented in 2 different ways installer choice thermo ON OFF signal from external room thermostat B status signal active not active from the corresponding temperature reducing device 13 Indoor unit DHW Domestic hot water tank TRD Temperature reducing device Space 0 Space 0 Space 1 Space 1 Space 2 Space 2 i Balancing bottle A Classic room thermostat control with remote controller room thermostat function and external room thermostat Space 0 not using a temperature reducing device TRD always needs to be linked with the highest water temperature set point and can be controlled by the remote controller room thermostat function or by the external room thermostat Settings for space 0 can be made on the remote controller same as during normal operation The electrical connections on the unit should be done on the optional demand PCB The configuration of pattern B is done by field settings 1 Select the appropriate pattern 7 02 1
74. ned to support radiator operation The advised leaving water temperature set by the remote controller for radiators is 65 C In such a case the unit will be controlled to realize a temperature difference AT of 10 C which means that the returning water to the unit is around 55 C Depending on the installed application radiators fan coil units or situation it can be required to change the AT This can be done by changing field setting A 02 03 See chapter 9 7 Multiple set point control on page 36 W 04 See chapter 9 7 Multiple set point control on page 36 b Domestic hot water set points The reheat mode will prevent the domestic hot water from cooling down lower than a certain temperature When enabled the indoor unit will deliver hot water to the domestic hot water tank if the reheat minimum value is reached The domestic water heating will continue until the reheat maximum temperature is reached In this way always a minimum of domestic hot water is available E b 00 Set point reheat minimum temperature see figure below B 0 01 Set point reheat maximum temperature see figure below A Storage operation if activated B Reheat operation if activated Disinfection operation if activated Field settings D Disinfection operation temperature 5 00 e g 70 C Hot water storage temperature b 03 e g 60 C Reheat maximum water temperature b 01 e g 45 C Reheat minimum water t
75. nefit kWh rate temperature lt 4 C and if leaving or return water temperature power supply is used lt 7 C For prevention level 2 the freeze up prevention will start Set 6 04 to 1 to use benefit kWh rate power supply mode 1 as soon as the ambient temperature lt 4 C normally closed contact which will open when the power supply For both cases the pump will operate and if leaving or return is interrupted or set 6 04 to 2 to use benefit kWh rate power water lt 5 C for 5 minutes the unit will start up to prevent too low supply mode 2 normally opened contact which will close when temperatures the power supply is interrupted It is advised to enable freeze up prevention if the indoor unit is See Connection to a benefit kWh rate power supply on page 22 for located a colder ambient room e g garage to prevent more information water freeze up 7 Option setup B 7 00 Setting not available B 7 01 Setting not available W 7 02 See chapter 9 7 Multiple set point control on 36 W 7 03 See chapter 9 7 Multiple set point control on page 36 W 7 04 See chapter 9 7 Multiple set point control on page 36 HXHD125A7V1B DAIKIN Installation manual VRVIII system indoor unit 4PW62584 1A 11 2010 29 9 Automatic temperature compensation If needed it is possible to adjust some thermistor value of the unit by a correction value This can be used as countermeasure for thermistor tolerances or capacity short
76. ng hours of the system Additional filling with water afterwards might be required Pump only operation in order to purge the air of the System is possible through field settings Refer to field settings E 04 Pump only operation on page 31 for further details 150 1 00 0 50 N The water pressure indicated the manometer will HERENNIUM vary depending on the water temperature higher pressure at higher water temperature 20 30 40 50 60 70 80 90 100110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 27 However at all times water pressure shall remain B above 1 bar to avoid air entering the circuit 65 C water temperature B The unit might dispose some excessive water through A Pre pressure bar the pressure relief valve 0 00 B System water volume I WB Water quality must be according to EU directive 98 83 EC total water volume of the system is 150 I no change of pre pressure needed For final purging of the unit operation of the pump is needed ifthe total water volume of the system is gt 150 I Therefore the unit needs to be finally installed change of pre pressure needed NOTICE Never change the pre pressure of the system to a value lower than 0 3 bar In this example when the needed water temperature is 65 C the maximal water volume is 215 Setting the pre pressur
77. nit please follow the same instruction as explained for the connection of the domestic hot water tank to the EKHVMRD unit Heat pump convector option An optional FWXV convector for heating operation can be connected to this indoor unit Refer to the heat pump convector installation manual for further details Remote controller option An optional secondary EKRUAHT remote controller with room thermostat functionality can be connected to the indoor unit Purpose is to provide the possibility to install the standard remote controller near the unit for service reasons and install another remote controller in another place e g living room to operate your installation Refer to Installation and connection of the remote controller on page 21 for further details Room thermostat option An optional room thermostat EKRTR or EKRTW can be connected to the indoor unit Refer to the room thermostat installation manual for further details INFORMATION If this option is installed it is not possible to use the remote controller thermostat function Digital O PCB option An optional EKRP1HBAA digital I O PCB can be connected to the indoor unit and be used to remotely monitor your system This address card offers 2 voltage free outputs and 1 high voltage 230 V AC output Refer to the operation manual of the indoor unit and to the digital I O PCB installation manual for more information Refer to the wiring
78. nstallation is too high Make sure that the water volume in the installation is under the maximum allowed value refer to Checking the water volume and expansion vessel pre pressure on page 16 Symptom 4 The water pressure relief valve leaks POSSIBLE CAUSES CORRECTIVE ACTION Dirt is blocking the water pressure relief valve outlet Check for correct operation of the pressure relief valve by turning the red knob on the valve counter clockwise If you do not hear a clacking sound contact your local dealer In case the water keeps running out of the unit close both the water inlet and outlet shut off valves first and then contact your local dealer Symptom 5 The user interface displays NOT AVAILABLE when pressing certain buttons POSSIBLE CAUSES CORRECTIVE ACTION The current permission level is set to a level that prevents using the pressed button Change the user permission level field setting 0 00 see Field settings in the operation manual 12 5 Error codes When a safety device is activated the user interface LED will be flashing and an error code will be displayed A list of errors and corrective actions can be found in the table below Reset the safety by pushing the es button In case this procedure for resetting the safety is not successful contact your local dealer For other error codes which may be displayed during the sys
79. on and schedule timer are enabled Setback function ON OFF instruction Time Temperature set point 1 2 3 A B t T m Room temperature Leaving water temperature W 0 04 Setting not available Installation manual 26 DAIKIN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 1 Automatic storage timing for domestic water heating In this mode the indoor unit will deliver hot water to the domestic hot water tank based on the daily fixed pattern This mode will continue until storage temperature is reached Automatic storage is the advised domestic hot water mode In this mode water heats up during the night when space heating requirements are lower until the storage set point The heated water is stored in the domestic hot water tank at a higher temperature so it can fulfil the domestic hot water requirements throughout the day The storage temperature set point and timing are field settings B 1 00 Status defines whether the domestic water heating storage mode during night is enabled 1 or not 0 B 1 01 Start time time of the night at which the domestic water should be heated B 1 02 Status defines whether the domestic water heating storage mode during daytime is enabled 1 or not 0 B 1 03 Start time time of the day at which the domestic water should be heated INFORMATION Make sure the domestic hot water is only heated up to the domestic hot water temperature yo
80. oor unit 4PW62584 1A 11 2010 DAIKIN Installation manual 3 4 ACCESSORIES 4 1 Accessories supplied with this unit Following accessories can be found in the unit ahond o 10 11 12 13 14 15 16 17 Installation manual Operation manual Addendum installation manual Wiring diagram User interface kit remote controller 4 fixing screws 2 plugs Stop valve fixing screws 6 screws Top plate fixing screws sound bottom plate fixing screws lifting fixing screws 8 screws Grommet small Grommet large Top plate insulation Kit for lifting the unit Flexible water outlet piping Flexible water inlet piping with manometer Support plate Piping Stop valves Piping fixation clamps 5 OVERVIEW OF UNIT 5 1 Opening the unit To gain access to the unit top plate the drip plates and the front plate need to be opened Top plate Drip plate Front plate Sound plate 5 Side plate Once the unit is opened access is possible to the main components Pon To gain access to the electrical components switch box needs to be opened DANGER ELECTRICAL SHOCK See 2 General Safety precautions on page 2 DANGER DO NOT TOUCH PIPING AND INTERNAL PARTS See 2 General Safety precautions on page 2 Installation manual 4 DAIKIN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 5 8 Main componen
81. perature control and leaving water temperature control T A 21 C 5 03 18 C 2 01 2 02 A Normal room temperature set point t Time T Temperature T 65 C es IL 5 C 5 02 60 C 1 4 2 01 2 02 A Normal leaving water temperature set point B Leaving water setback temperature t Time T Temperature It is advised to set the start time of automatic storage during night 1 01 on the moment that the setback function starts 2 01 Refer to 5 Automatic setback and disinfection set point on page 28 for temperature set points HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 DAIKIN Installation manual 27 3 Weather dependent set point When weather dependent operation is active the leaving water temperature is determined automatically depending on the outdoor temperature colder outdoor temperatures will result in warmer water and vice versa The unit has a floating set point Activating this operation will result in a lower power consumption than use with a manually fixed leaving water set point During weather dependent operation the user has the possibility to shift up or down the target water temperature by a maximum of 5 C This Shift value is the temperature difference between the temperature set point calculated by the controller and the real set point E g a positive shift value means that the real temperature set point will be higher than
82. ponsibility of the installer to make sure that the air is purged out of the unit and system NOTICE When using thermostatic radiator valves make sure to open all valves during air purging operation sure that all stop valves are open Refer to vacuuming procedure of the outdoor unit Be sure that all water valves are open Multi tenant power supply check Cut off the power supply to the indoor unit If the multi tenant power supply is installed the remote controller will keep operating Confirm that the remote controller still operates for more than 15 seconds after the power supply was cutt off 10 2 System test run Before you can check test operation of each indoor unit separately you have to do the system test run System test run is explained in the installation manual of the outdoor unit This is an automatic test run which can take up to more than 1 hour When the system test run is finished it is possible to do an individual test run as described in 10 3 Indoor unit individual test run on page 40 During this test run the installer should check indicated items 70 3 Indoor unit individual test run INFORMATION When the indoor units and outdoor unit are powered on for the first time an initialisation takes place This will take maximum 12 minutes When using the remote controller during the initialisation an error code UH can be displayed The installer is obliged to verif
83. r types They all cover very important topics so be sure to follow them carefully DANGER ELECTRICAL SHOCK Switch off all power supply before removing the switchbox Service panel or before making any connections or touching electrical parts Do not touch any switch with wet fingers Touching a switch with wet fingers can cause electrical shock Before touching electrical parts turn off all applicable power supply To avoid electric shock be sure to disconnect the power supply 1 minute or more before servicing the electrical parts Even after 1 minute always measure the voltage at the terminals of main circuit capacitors or electrical parts and before touching be sure that those voltages are 50 V DC or less When service panels are removed live parts can easily be touched by accident Never leave the unit unattended during installation or servicing when the service panel is removed N DANGER DO NOT TOUCH PIPING AND INTERNAL A PARTS Do not touch the refrigerant piping water piping or internal parts during and immediately after operation The piping and internal parts may be hot or cold depending on the working condition of the unit Your hand may suffer burns or frostbite if you touch the piping or internal parts To avoid injury give the piping and internal parts time to return to normal temperature or if you must touch them be sure to wear protective gloves Installation manual 2 DAIKIN H
84. respond to the voltage on the identification label of the unit 11 Air purge valve Make sure the air purge valve of the heat pump is open at least 2 turns 12 Shut off valves Make sure that the shut off valves are correctly installed and fully open NOTICE Operating the system with closed valves will damage the pump Once all checks are fulfilled the unit must be closed only then can the unit be powered up When the power supply to the indoor unit is turned on 88 is displayed on the remote controller during its initialization which might take up to 30 seconds During this process the remote controller can not be operated 9 2 Final air purging To get rid of all the air in the system the pump should be operated Therefore change the field setting E 04 as explained in the chapter 9 3 Field settings on page 24 More details about setting E 04 Pump only operation can be found on page 31 In case of an optional tank installed with the HXHD125 units the system includes one 3 way valve heat domestic hot water 9 3 Field settings The indoor unit should be configured by the installer to match the installation environment outdoor climate installed options etc and user demand Therefore a number of so called field settings are available These field settings are accessible and programmable through the user interface on the indoor unit Each field setting is assigned a 3 digit number or code for example
85. roller error Contact your local dealer Phase 1N Frequenc Hz 50 ua Type connection problem Wait till initialisation between A x 24 outdoor unit and indoor unit is Voltage finished after power ON wait Voltage tolerance 20 20 at least 12 minutes Maximum running current A 1 Contact your local dealer Recommended field fuse A 3 15 ut Address duplication error Contact your local dealer UF Transmission problem with Contact your local dealer outdoor unit UF QA wiring problem Contact your local dealer UH Address error Contact your local dealer Installation manual DAIKIN HXHD125A7V1B 46 VRVIII system indoor unit 4PW62584 1A 11 2010 4PW62584 1 A 0000000R Copyright 2011 Daikin DAIKIN EUROPE N V Zandvoordestraat 300 B 8400 Oostende Belgium 4PW62584 1A 11 2010
86. rom radio frequency energy The equipment complies to specifications that are designed to provide reasonable protection against such interference However there is no guarantee that interference will not occur in a particular installation It is therefore recommended to install the equipment and electric wires keeping proper distances away from stereo equipment personal computers etc In extreme circumstances you shall keep distances of 3m or more and use conduit tubes for power and transmission lines NOTICE This is a class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures Point of attention regarding quality of the public electric power supply This equipment complies with respectively EN IEC 61000 3 110 provided that the system impedance 2 75 is less then or equal to Zmax 61000 3 12 provided that the short circuit power Sse is greater than or equal to the minimum Sg value at the interface point between the user s supply and the public system It is the responsibility of the installer or user of the equipment to ensure by consultation with the distribution network operator if necessary that the equipment is connected only to a supply with respectively 2 1655 than or equal to Zmax Sy greater than or equal to the minimum Sg value Zmax 9 Minimum Ss value HXHD125 0 46 1459 kVA
87. s pressed for at least 5 seconds Note that 7 When finished press the button to exit FIELD SET MODE no indication on the remote controller is given After the procedure the blocked buttons will not be available anymore INFORMATION Deactivating the selected permission level is done in the same TNCS way B Changes made to a specific field setting are only ay stored when the button is pressed Navigating to Mm 0 01 Room temperature compensation value a new field setting first code or pressing the button If needed it is possible to adjust some thermistor value of the will discard the change made unit by a correction value This can be used as countermeasure er for thermistor tolerances or capacity shortage The field settings are grouped by their field setting first The compensated Su NR temperature plus code Anna REEL compensation value is then used for controlling the system and id ee duca 0 00 0 03 will be displayed in the temperature read out mode See also When different ie ARS chandedsithin ha sama 9 Automatic temperature compensation on page 30 for g compensation values for leaving water temperature and group pressing the button will save all the values domestic hot water changed within this group Be aware of this when changing field settings within m 0 02 Setting not available the same group and pressing on the amp button B 0 03 Status defines whether the ON
88. s pulled loose from the stress relief Installation and connection of the remote controller The unit is equipped with a remote controller offering user friendly way to set up use and maintain the unit Before operating the remote controller follow this installation procedure INFORMATION B The wiring for connection is not included W The remote controller delivered in a kit has to be mounted indoors WB When the remote controller thermostat function is used select the installation location considering it should be a place WB where the average temperature the room can be detected that is not exposed to direct sunlight that is not near a heat source B that is not affected by outside air or air draught due to e g door opening closing B where the display is kept clean B where the temperature is between 0 C and 50 C B where the relative humidity is maximum 80 1 Remove the front part of the remote controller Insert a slotted screwdriver into the slots 1 in the rear part of the remote controller and remove the front part of the remote controller 2 Fasten the remote controller on a flat surface NOTICE Be careful not to distort the shape of the lower part of the remote controller by over tightening the mounting Screws 3 Wire the unit INFORMATION If next to the standard remote controller the optional remote controller is installed as well B Connect the
89. stem indoor unit 4PW62584 1A 11 2010 External room thermostat When the reheat temperature is reached the further heat up of the domestic hot water tank will be decided by the external room thermostat thermo conditions and running timers which are programmed by the installer Storage operation When requesting space heating and domestic water heating storage at the same time domestic water will be heated according to running timer then space heating will start again according to running timer then domestic water heating will start again according to running timer this will continue till storage set 1 Reheat operation point is reached When requesting space heating and domestic water heating reheat at the same time the domestic water will be heated till 00 L maximum reheat temperature then space heating will start XC again oC L ON X C OFF G 75 C OFF G 75 C F 35 C ON F 35 C OFF ON OFF 2 _ Ur 1 Fel A Operation A Operation Space heating Space heating I Domestic water heating DE Domestic water heating B Domestic hot water reheat thermo on request B Domestic hot water storage thermo on request C Domestic hot water tank temperature C Domestic hot water tank temperature D Room temperature thermo on request D Room temperature thermo on request E Remote controller room temperature E Remote controller room temperature F Domestic hot water lower limit temperature F Do
90. stor error Check wiring connections heating Contact your local dealer Operation range outdoor R134a high pressure sensor Check wiring connections 29 heating 20 20 error B1PH Contact your local dealer domestic hot water C 20 43 dc R134a low pressure sensor error Check wiring connections B1PL Contact your local dealer Ambient temperature C 5 30 11 Compressor inverter error Contact your local dealer a entering water 55 C leaving water 65 C For more information LH Fin thermistor error Check wiring connections Contact your local dealer Ig Electrical specifications power supply L5 Compressor inverter PCB error Contact your local dealer LB Compressor inverter PCB error Contact your local dealer Phase 1N L3 Compressor inverter PCB error Contact your local dealer Frequency Hz 50 Voltage range LE Inverter communication problem Contact your local dealer B y minimum V 220 LH Converter error Contact your local dealer maximum V 240 Pi Main compressor PCB error Contact your local dealer Voltage tolerance 10 6 PU Bad combination inverter Contact your local dealer Maximum running current A 16 5 components Recommended field fuse A 20 ue Power supply error Check wiring connections Contact your local dealer Electrical specifications multi tenant power supply UH QA transmission problem Contact your local dealer u5 Remote cont
91. t competitive prices and are often authorized to bill clients at benefit rates E g time of use rates seasonal rates W rmepumpentarif in Germany and Austria This equipment allows for connection to such benefit rate power supply delivery systems Consult with the electricity company acting as provider at the site where this equipment is to be installed to know whether it is appropriate to connect the equipment in one of the benefit KWh rate power supply delivery systems available if any When the equipment is connected to such benefit kWh rate power supply the electricity company is allowed to B interrupt power supply to the equipment for certain periods of time demand that the equipment only consumes a limited amount of electricity during certain periods of time The indoor unit is designed to receive an input signal by which the unit switches into forced off mode At that moment the unit compressors will not operate INFORMATION For a benefit kWh rate power supply like illustrated below as type 1 During the period that the benefit kWh rate is active and power supply is continuous then stand by power consumption of the inverter PCB is possible Installation manual 22 DAIKIN HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 Possible types of benefit kWh rate power supply Possible connections and requirements to connect the equipment to such power supply are illustrated in the f
92. tem test run or operation see the installation manual of the outdoor unit water is hot Error Make sure that the expansion code Failure cause Corrective action vessel is not broken Failure of writing memory Contact your local dealer The water volume in the installation Make sure that the water volume in EEPROM error is too low dE ne minimum 85 Malfunction of pump in water Make sure waterflow is water valuing and circuit M1P possible open all valves in the vessel pre pressure on page 16 circuit Force clean water through the Capacity shortage Check if the cooling fan at the rear unit of the switch box is working 7 Rm Ag R410A expansion valve error Check wiring connections Check if the unit is not installed in K1E Contact your local dealer a too hot location 230 C RE Water system warning low flow Check filter is expected by the unit Make sure all valves are open Symptom 2 Pump is making noise cavitation 9 RJ Capacity error Contact your local dealer POSSIBLE CAUSES CORRECTIVE ACTION Bad ACS communication Contact your local dealer There is air in the system Purge air Water pressure at pump inlet is too low Check on the manometer that there is sufficient water pressure The water pressure must be 20 3 bar water is cold 220 3 bar water is hot Check that the manometer is not broken C
93. th applicable legislation Selection and sizing of the wiring should be done in accordance with the applicable legislation based on the information mentioned in the table below Maximum Cable Requirednumber running Item bundle Description of conductors current 1 PS Normal kWh rate power supply 24GND a 2 HV Multi tenant power supply 2 1A 1 PS Normal kWh rate power supply 24GND 1 25A 2 PS Benefit kWh rate power supply 24GND 2 1 25 A 3 HV Multi tenant power supply 2 1A 4 LV Transmission wiring F1 F2 2 c 5 LV Standard remote controller 2 P1 P2 6 Lv Secondary remote controller 2 c P1 P2 V Domestic hot water tank 2 d thermistor R2T 8 LV External room thermostat 2 100 ma signal ON OFF 9 LV Benefit kWh ate power supply 2 100 ma switch S1S 10 Lv Multiple set point signal 16 2 100 mA 9 11 Lv Multiple set point signal 20 2 100 mA 9 12 HV 3 way valve K1S 3 d 13 HV Digital PCB outputs 2 300 mA PS Power supply Low voltage HV High voltage a Refer to the nameplate on the indoor unit b Optional c Minimum cable section 0 75 mm d This device and connection cable is delivered with the domestic hot water tank 8 5 Routing Take out the switchbox and put it in front of the unit and open the switchbox cover Refer to 7 1 Selecting an installation location on page 10 INFORMAT
94. the calculated set point It is advised to use the weather dependent set point because it adjusts the water temperature to the actual needs for space heating It will prevent the unit from switching too much between thermo ON operation and thermo OFF operation when using the remote controller room thermostat or external room thermostat Lo A A TA Ti Target water temperature TA Ambient outdoor temperature Shift value Shift value B 3 00 Low ambient temperature Lo A low outdoor temperature B 3 01 High ambient temperature Hi A high outdoor temperature W 3 02 Set point at low ambient temperature Lo Ti the target outgoing water temperature when the outdoor temperature equals or drops below the low ambient temperature Lo A Note that the Lo Ti value should be higher than Hi Ti as for colder outdoor temperatures i e Lo A warmer water is required B 3 03 Set point at high ambient temperature Hi Ti the target outgoing water temperature when the outdoor temperature equals or rises above the high ambient temperature Hi A Note that the Hi Ti value should be lower than Lo Ti as for warmer outdoor temperatures i e Hi A less warm water suffices INFORMATION If by mistake the value of 3 03 is set higher than the value of 3 02 the value of 3 03 will always be used 4 Disinfection function This mode will disinfect the domestic hot water tank by periodically heating the domestic wat
95. tic hot water tank installation manual Fix the front and remaining side decoration panel s back to the unit using the appropriate screws 7 5 Leak test and vacuuming drying R410A circuit When the indoor unit was powered on before all brazing and refrigerant piping work was finished on R410A side a special setting needs to be applied to open all valves before vacuuming can start See also the installation manual of the outdoor unit for furter details and 11 3 Vacuuming recovery and maintenance on refrigerant side on page 43 7 6 Water piping The unit is equipped with a water inlet and water outlet for connection to a water circuit This circuit must be provided by an installer and must comply with the applicable legislation NOTICE The unit is only to be used in a closed water system Application in an open water circuit can lead to excessive corrosion of the water piping For precautions about the design of the water circuit refer to 6 Design of the water circuit on page 7 Checking the water volume and expansion vessel pre pressure The expansion vessel in the unit avoids that the pressure in the System increases due to temperature differences The unit is equipped with a 71 expansion vessel for which the pre pressure can be changed default pre pressure is 1 bar Changing the pre pressure of the expansion vessel might be needed if the water volume of the system is too big in relation with the nee
96. time storage 0 OFF 0 1 O3 Day time storage start time 15 00 0 00 23 00 1 00 hour 2 Automatic setback function 00 Status setback operation 1 ON 0 1 01 Setback operation start time 23 00 0 00 23 00 1 00 hour 02 Setback operation stop time 5 00 0 00 23 00 1 00 hour 3 Weather dependent set point 00 Low ambient temperature Lo_A 10 20 5 1 G 01 High ambient temperature Hi A 15 10 20 1 C 02 Set point at low ambient temperature Lo_Ti 70 25 80 1 C 03 Set point at high ambient temperature Hi_Ti 45 25 80 1 C 4 Disinfection function 00 Status disinfection operation 1 ON 0 1 01 Disinfection operation day selection Fri Mon Sun 02 Disinfection operation start time 23 00 0 00 23 00 1 00 hour 5 Automatic setback and disinfection set point 00 Set point disinfection operation temperature 70 60 75 5 C 01 Disinfection operation time duration 10 5 60 5 min 02 Leaving water setback temperature 5 0 10 1 C 03 Room setback temperature 18 17 23 1 C 04 Not applicable Do not change the default value 0 6 Option setup 00 Domestic hot water tank installed 0 OFF 0 1 lt 01 Optional room thermostat installed 0 OFF 0 1 02 Not applicable Do not change the default value 0 03 Not applicable Do not change the default value 0 04 Benefit kWh power supply mode 0 0 2 1 7 Option setup 00 Not applicable Do not change the default value 0
97. tions on the system When certain settings and operations explained in the flow chart are not followed this can lead to improper operation of the unit due to bad vacuuming recovery In case of problems please contact your local dealer Yes Indoor unit remocon R134a circuit needs setting E 00 1 to 7 0 to be maintenanced open electronic expansion valve circuit needs to be maintenanced Yes NU No First installation Maintenance Yes Yes No No Open stop valve No 7 0 gt indoor units m 29 Field 1 indoor unit Other indoor or EM Complete indoor d jen uit outdoor unit s were En and system R410A yes iin Hes 7 5 circuit 2 8 vacuuming can start Yes Yes Yes hd hd b il Yes Apply outdoor Valves on R410A m gt unit eld setiin circuit need to be _ Field piping 2 21 opened Apply indoor outdoor outdoor unit field unit s ee setting 2 21 outdoor unit see installation manual of outdoor No unit Open all Recovery start stopvalves 1
98. tivity always switch off the circuit breaker on the supply panel remove the fuses or open the protection devices of the unit B Make sure that before starting any maintenance or repair activity also the power supply to the outdoor unit is switched off W Before carrying out any maintenance or repair activity always switch off the multi tenant power supply B Do not touch live parts for 10 minutes after the power supply is turned off because of high voltage risk B Additionally measure the points as shown in the figure below with a tester and confirm that the voltage of the capacitor in the main circuit is no more than 50 V DC B Please note that some sections of the electric component box are hot B sure you do not touch a conductive section B Do not rinse the indoor unit This may cause electric shocks or fire NOTICE Play it safe Touch a metal part by hand such as the stop valve in order to eliminate static electricity and to protect the PCB before performing service HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 DAIKIN Installation manual 41 Checks The described checks must be executed at least once a year by qualified personnel 1 Pressure relief valve hose Check that the pressure relief valve hose is positioned appropriately to drain the water 2 Water pressure relief valve Check for correct operation of the pressure relie
99. ts in the unit 1 R134a accumulator 2 R134a compressor 3 R134a discharge muffler 4 R134a low pressure sensor 5 R134a high pressure switch 6 R134a high pressure sensor 7 R134a expansion valve 8 R410A heating expansion valve 9 Heating pump 10 Air purge 11 Expansion vessel 12 Heating plate heat exchanger 13 Cascade plate heat exchanger 14 R410A HP LP gas connection 15 R410A liquid connection 16 Switchbox 17 Service port R134a high 18 Service port R134a low Sensor information R3T R410A liquid temperature R4T Water return temperature R5T Heating leaving water temperature R6T R134a discharge temperature R7T R134a liquid temperature HXHD125A7V1B DAIKIN VRVIII system indoor unit 4PW62584 1A 11 2010 Installation manual 5 ONOOaARWND b ch Refrigerant side Outdoor unit REYAQ Option domestic hot water tank Muffler Check valve Filter Field piping 012 7 Field piping 29 52 Compressor Accumulator Cascade heat exchanger Service port Heating heat exchanger Drain port Expansion vessel Air purge AB uoo Se re sl 3 1 RST E Q2L 16 ME R4T 0 6 T Or 1 Po gasmeepani bz 17 18 19 20 21 22 B1PH B1PL K1E K1S K2E M1P Q2L S1PH Shut off valve Water outlet Water inlet Blow off Safety valve Pressure gauge Instal
100. u require Start with a low domestic hot water storage temperature set point and only increase if you feel that the domestic hot water supply temperature is not sufficient for your needs this depends on your water using pattern B Make sure the domestic hot water is not heated unnecessary Start with activating automatic storage during night default setting If it seems that the domestic hot water night storage operation is not sufficient for your needs an additional storage during daytime can be set B For energy saving purposes it is advised to enable the weather dependent domestic water heating Refer to setting b 02 on page 30 Refer to b Domestic hot water set points on page 30 for temperature set points 2 Automatic setback function Setback function provides the possibility to lower the room temperature The setback function can for instance be activated during the night because the temperature demands during night and day are not the same INFORMATION L By default the setback function is enabled The setback function can be combined with the automatic weather dependent set point operation Setback function is an automatic daily scheduled function W 2 00 Status defines whether the setback function is turned ON 1 or OFF 0 Wi 2 01 Start time time at which setback is started W 2 02 Stop time time at which setback is stopped Setback can be configured for both room tem
101. ual specified for a certain product or application explaining how to install configure and maintain it Operation manual Instruction manual specified for a certain product or application explaining how to operate it Maintenance instructions Instruction manual specified for a certain product or application which explains if relevant how to install configure operate and or maintain the product or application Dealer Sales distributor for products as per the subject of this manual Installer Technical skilled person who is qualified to install products as per the subject of this manual User Person who is owner of the product and or operates the product Service company Qualified company which can perform or coordinate the required service to the unit Applicable legislation All international European national and local directives laws regulations and or codes which are relevant and applicable for a certain product or domain Accessories Equipment which is delivered with the unit and which needs to be installed according to instructions in the documentation Optional equipment Equipment which can optionally be combined to the products as per the subject of this manual Field supply Equipment which needs to be installed according to instructions in this manual but which are not supplied by Daikin 2 GENERAL SAFETY PRECAUTIONS The precautions listed here are divided into the following fou
102. unit prescribed in this manual are included into this chapter Actions needed during the installation of the unit prescribed in this manual are described in the chapter 7 6 Water piping on page 16 NOTICE It is strongly recommended to install an additional filter on the heating water circuit Especially to remove metallic particles from the field heating piping it is advised to use a magnetic or cyclone filter which can remove small particles Small particles can damage the unit and will not be removed by the standard filter of the heat pump unit 6 1 Selection of the type of heat emitters The selection of the heat emitter is the choice of the end customer The choice of the heat emitter will define the needed water temperature from the unit Based on the needed water temperature for the heat emitters following range can be defined 1 Low temperature Leaving water temperature range from 25 C to 40 C Typical example floor heating 2 Medium temperature Leaving water temperature range from 40 C to 55 C Typical example low temperature radiators or convectors 3 High temperature Leaving water temperature range from 55 C to 75 C Typical example radiators Once the heat emitters are chosen the capacity of these heat emitters should be defined and from this the dimensioning and position of the heat emitters in the different rooms should be decided An important parameter of the heat emitters is the te
103. ure 9 5 Detailed description 9 6 Simultaneous demand of space heating and domestic water heating 9 7 Multiple set point control 9 8 Field setting table 10 Final check and test run 10 1 Final check Multi tenant power supply check 10 2 System test run 10 3 Indoor unit individual test Temperature read out mode Procedure for space heating Procedure for domestic water heating HXHD125A7V1B VRVIII system indoor unit 4PW62584 1A 11 2010 DAIKIN Installation manual 1 7 DEFINITIONS 1 1 Meaning of warnings and symbols Warnings in this manual are classified according to their severity and probability of occurrence DANGER Indicates an imminently hazardous situation which if not avoided will result in death or serious injury WARNING Indicates a potentially hazardous situation which if not avoided could result in death or serious injury CAUTION Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury It may also be used to alert against unsafe practices NOTICE Indicates situations that may result in equipment or property damage accidents only INFORMATION This symbol identifies useful tips or additional information gt a Some types of danger are represented by special symbols Electric current A Danger of burning and scalding 1 2 Meaning of used terms Installation manual Instruction man
104. ure reducing devices are installed the system can be configured to use multiple water set points The water set points can be selected in function of multiple set point operation patterns Below the 2 possible patterns are explained in detail Multiple set point control according to pattern A During normal operation domestic water heating and space heating Wi status signal active not active from the corresponding modes are separated and activated intermittent to fulfil a temperature reducing device TRD simultaneous request Therefor multiple set point pattern A can be configured to allow simultaneous domestic water heating and space heating operation without intermission Schematic overview Pattern A design Classic design ZA 0 Ww 1 1 DHW Domestic hot water tank 15 Indoor unit TRD Temperature reducing device Space 1 Space 1 Protection is required by means Space 2 Space 2 y of a temperature reducing i device TRD depending on set Balancing bottle point The electrical connections on the unit should be done on the optional demand PCB 15 Indoor unit The configuration of pattern A is done by field settings 1 Domestic hot water shut off valve field supply i ttern 7 02 DHW Domestic hot water tank Select the appropriate pattern 7 02
105. water reheat maximum temperature b 01 Remote controller thermostat set point ON ON ON ON OFF OFF OFF OFF 1 Minimum operation time for domestic water heating initial 10 minutes d 00 9 2 Maximum operation time for domestic water heating initial 30 minutes d 01 0 3 Interval minimum stop time for domestic water heating initial 15 minutes d 02 4 No simultaneous operation 5 Timers for domestic water heating start 6 Timer for space heating start a The minimum operation time is only valid when room temperature is more than 3 C lower as set point and set point J is reached b The maximum operation time is only valid when room temperature is more than 0 5 C lower as set point and set point J is reached Installation manual DAIKIN HXHD125A7V1B 34 VRVIII system indoor unit 4PW62584 1A 11 2010 SMR eens Me Normal operation request space heati heating and Space Teang er domestic water heating 9 Yes 1 Vv Domestic hot water production will start Domestic hot water No Domestic hot water temperature reached production will Azminimum b 01 continue without time 55 C limit till A is reached Yes hd Leaving water Yes control No a i gt No Timer d 01 30 No Operation will gt
106. y correct operation of the indoor and outdoor unit after installation Therefor a test run must be performed according to the procedures described below At any time it is possible to check correct operation of space heating and domestic water heating INFORMATION B During the first start up of the unit the first 48 hours of compressor running it might happen that the noise level of the unit is higher than mentioned in the technical specifications This is not an abnormal event Start up of the unit in space heating mode is only possible when the outdoor ambient temperature is lower than 20 C Refer to 9 02 Thermo ON OFF admission on page30 how to increase this temperature limit Temperature read out mode On the remote controller the actual temperatures can be displayed 1 Push and hold the button for 5 seconds The leaving water temperature is displayed icons 9 and and are blinking 2 Use the OL 4 land OX v buttons to display The entering water temperature icons and are blinking and the amp icon is flashing slowly The indoor temperature icons lt and amp are blinking EB The outdoor temperature icons and t are blinking EB The hot water supply tank temperature icons 9 and are blinking 3 Push the button again to leave this mode If no button is pressed the remote controller leaves the display mode after 10 seconds
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