Installation, Service and User Manual
Contents
1. Gross weight filled 423kg Fuse internal electronics 5A Above performance data at test conditions e Test temperature 15 12 C DB WB e Water temperature from 15 C up to 45 C 38 Installation Service and User Manual VMGFK202 VMGFK2022. Installation Service and User Manual VMGFK202 11 6 Piping Connection Figure 5 Principal Piping Connection Position Explanation Position Explanation 1 Upper condensate outlet 12 Valve stem 2 Lower condensate outlet 13 Expansion vessel if required 3 Hot water tap 14 Solar water inlet 4 Solar sensor 15 Solar water outlet 5 Drain barrel 16 Drain pipe 8 Temperature and pressure valve 17 Mixing valve 9 Anode rod 27 Water inlet 10 Hot water outlet Warning If a solar energy solution is installed the water temperature can rise very quickly Preventive measures must be taken for the piping connections Note If the water pressure is too high above 5 bars a pressure reducer should be installed at the water A inlet This is the installer s responsibility 6 1 Water inlet and outlet pipes The specification of the water inlet or outlet internal thread is DN20 RC3 4 Pipes must be heat resistant and durable 12 Installation Service and User Manual VMGFK202 6 2 6 3 6 4 6 5 6 6 Temperature and pressure valve The specification of the valve connecting internal thread is DN20 RC3 4 After installation it must be confirmed that the drainpipe outlet is exposed in the air If a flexible drainpipe is jointed to the pressure relief orifice of this valve it must be confirmed that the flexible drainpipe is directed downwards vertica
3. 33 12 1 Maintenance tasks for service technicians sseeceseee 33 12 2 Maintenance tasks for both home owners and service TECHNICIANS ou sessessesccsseesecessececsssccecssscecsnseccessseceenseeceeee 34 12 3 Special Non error Conditions ssss ssssssssssssssssssssesssssreesssseressss 34 12 4 Malfunctions and Resolutions sssssscccssesscccsseececeseeeeeenseeees 35 12 5 After Sale Service escsssssssccsssscesssscccssscecessseesenseccccnseeesesnsseeeste 35 Disposal Instructions cecssesssssesssecsssssssccsscsssecsssccssccsnecesseessessses 36 Technical data sia cssscoucasecttaneccieicncantgeescadeanauuancniaaniaiieandate 37 VMGFK202 1 1 1 1 2 1 3 About this document and decals Introduction This document contains the following e Installation instructions for authorized installation technicians e Service instructions for authorized service technicians e User instructions operational instructions for home owners The instructions are also available for download at the following address www documentation heatpump danfoss com Symbols in documents The instructions contain different warning symbols which together with text indicate to the user that there are risks involved with actions to be taken The symbols are displayed to the left of the text and three different symbols are used to indicate the degree of danger DANGER Indicates an immediate danger that leads to fatal or serious injury if n
4. 6 5A 4300W 18 7A 3000W 13 0A Water heating capacity 3000W Power supply 220 240V 50Hz Operation control Auto Manual startup o The unit starts automatically if the water temperature is lower than the setting temperature o The unit starts automatically at a certain time according to the timer setting Error handling o Audible alarm indications o Visible alarm indications Protection High pressure switch Temperature and pressure valve High temperature discharge pipe Thermal overload relay Temperature guard Compressor overload E heater overload Ambient temperature outside operational range Electrical leakage Compressor power 850W E heater power 3000W Refrigerant R134a 1200g Water pipe line system Outlet water tem perature setting Default 55 C 38 60 C adjustable Water side Surface double wall heat exchanger heat exchanger Inlet pipe DN20 Outlet pipe DN20 Solar water outlet DN20 Solar water inlet DN20 Drain pipe DN20 PT valve DN20 Max pressure 1 0MPa Exchanger Material Hydrophilic aluminum fin inner groove copper tube ait side Fan Motor power 80W Outlet air type Vertical upflow air supply Dimension 650x1920mm Water tank Capacity 300L Material inner Stainless steel 304 tank Net weight 123kg Installation Service and User Manual VMGFK202 37 Model RSJ 35 300RDN3 B
5. For example if the water temperature has already reached the set ting temperature the unit will not start e That the air outlet or inlet is free from obstacles not jammed e Strong wind blows towards the air outlet 12 3 2 Defrosting e When it is humid and cold the unit may need to defrost and thus the water heating capacity decreases The system will stop heating water and instead start defrosting When the defrosting is finished the water heating starts again e During defrosting the fan stops working but the compressor keeps on working e The defrosting time varies from 3 minutes to 10 minutes depending on the ambient temperature and the amount of frost 12 3 3 Displayed water temperature e When the system stops a slow decrease of the water temperature is normal due to minor heat loss in idle mode even if no hot water is used When the water temperature decreases below the set point the system will restart automatically e During water heating the displayed water temperature might still initially decrease or will not increase for a period of time because of the heat exchange of the water When the whole tank of water has reached the selected temperature the system will automatically stop 34 Installation Service and User Manual VMGFK202 12 4 Malfunctions and Resolutions Table 5 Malfunctions and Resolutions Malfunction Cause Resolution The outlet water is cold The display is dark Bad connect
6. When the self check sequence has finished without any problems detected the unit will automatically restart again 30 Installation Service and User Manual VMGFK202 11 4 6 11 4 7 11 4 8 When the self protection state is active a buzzer will sound every other minute the ALARM indicator will flash and the display indicates an error code and the water temperature alternatively Press CANCEL for 3 seconds to stop the alarm When the protection cause is resolved the error code disappears on the display the buzzer sound stops and the unit returns to normal operation Examples of problems that can trigger the self protection function o The air inlet or outlet is blocked o The evaporator is covered with too much dust o Incorrect power supply exceeding the range of 220 240V AC If the unit does not start automatically after the problem has been resolved the user can reset the self protec tive function by shutting down the power supply manually and then restart the system again Water temperature display The temperature on the display is only showing the water temperature in the upper part of the water tank over 1 4 that is the water you will be using The 6 LED indicators beside the water temperature on the display indicate the level of the water temperature in the lower part of the tank When the temperature reaches 40 C the blue one is lit when it reaches 50 C the blue and yellow ones are lit when it reaches 60
7. all keys can be used again 11 1 2 Clock set The clock is designed for a 24 hour system and the initial time is set to 00 00 Set the time to the accurate local time Each time the unit is powered off the clock will be reset to the initial time 00 00 Press the CLOCK key the minute digit of the clock on the display starts flashing slowly Press the UP or DOWN key to adjust the minute setting s i 22 Installation Service and User Manual VMGFK202 Press the CLOCK key again the minute digit stops flashing and the hour digit starts flashing Press the UP or DOWN key to adjust the hour setting Press the CLOCK key again or if there is no user operation for about 10 seconds the flashing will stop and the clock setting is completed 11 1 3 Mode selection The unit features three operational modes e Economy mode e Hybrid mode e E heater mode Economy mode The heated water comes from the compressor according to the heat pump principle Used when the ambient temperature is high Hybrid mode The heated water comes not only from the compressor but also from the electric heater Used when the ambient temperature is low or a large amount of hot water is needed E heater mode The heated water only comes from the electrical heater Used when the ambient temperature is very low By default the unit operates in Hybrid Mode To shift mode press the MODE key and the operation mode will be shifted among the th
8. be more than 700 m h The air inlet and outlet should be free from obstacles and impact from strong wind The unit must be located on a stable surface without increasing noise or vibrations If it is a floor it must must be able to support the gross weight of a unit with a filled hot water tank see Techni cal data Page 1 It is convenient for piping and wiring Depending on the installation location it may cause the indoor temperature to decline and also create noise disturbances Take this into consideration when deciding the location e Asite containing mineral oils such as cutting lubricant e Seaside areas where the air contains much salt Caution Installing the unit in any of the following places may lead to malfunction of the unit e Hot spring areas where corrosive gases exist e g sulfide gas e Factories where the power voltage fluctuates seriously e Akitchen where oil permeates e A location where strong electromagnetic waves exist e A location where flammable gases or materials exist e A location where acid or alkali gases evaporate e Other special environments 5 1 Installation space The recommended space for maintenance purposes is shown in the following figures Position Explanation 1 Air outlet 2 Display 3 Air inlet 4 wall Figure2 Installation space distance 10 Installation Service an
9. on the power supply initially a buzzer sound will be heard and all indica tors appear on the display for 3 seconds If there is no operation from the user for 1 minute all indicators will go out automatically except the WATER FILL indicator which will be flashing as a reminder and the tank s tempera ture indicator Figure 15 ON OFF key To start the unit the default mode is HYBRID press the ON OFF key Press the ON OFF key again the WATER FILL indicator will stop flashing and you can continue to set other parameters The unit will now be operational When the unit is running and there is no user operation or any malfunction for 1 minute the backlight of the dis play will go out automatically except operational mode and outlet temperature The unit will automatically go into a locked state and the lock indicator will also be displayed Unlocking user interface In order to prevent unwanted user operations a special lock function has been designed If there is no operation from the user or no errors in the system for 1 minute the unit will automatically be locked and a lock indicator is displayed When the user interface is locked no keys except CANCEL can be operated To unlock the user interface key pad press the CANCEL key a couple of seconds At the screen protection of Display press any key to active the display and then press the CANCEL key a couple of seconds to unlock it The lock indicator will blank out and
10. 78 C This will automatically reset when the temperature get below 78 C The manually reset temperature switch is trigged when exceeding a water temperature of 85 C This switch must be reset manually In either case one of the above protective functions are triggered the unit will shutdown the main supply will be cut and the unit will completely shut off If integrating the unit with a solar thermal system take protective actions to avoid overheating of the unit 14 Installation Service and User Manual VMGFK202 7 Duct Connections Example of air inlet 2 and outlet 1 without flexible air ducts Position Explanation al t 190 mm 1 Air outlet 2 Air inlet Figure 7 Air inlet and outlet without flexible air ducts Flexible air ducts can be connected to both the air outlet 1 and air inlet 2 separately or in combination The distance 3 can be maximum 10 m 2 o Qen N Gani l E E Figure8 Connection with two flexible air ducts one for air inlet and one for air outlet Installation Service and User Manual VMGFK202 15 Table 3 Flexible Air Duct Description Duct Round duct Rectangle duct Other shaped ducts Dimension mm 190 190X190 Maximum length 3 m Straight line pressure lt 2 lt 2 drop Pa m Straight line lengt
11. C the blue yellow and red ones are lit When hot water is tapped the temperature in the lower part of the tank may decrease while the upper part still keeps a high temperature The system will then start heating the lower part in the tank This is normal behaviour Trouble shooting If errors occur the system enters a standby mode It could still work but not so efficiently as normal Contact service technician for corrective actions If a critical error occurs the system will not work at all Contact service technician for corrective actions If an error occurs the buzzer will sound every other minute a warning light will be flashing the display will show the error code and water temperature alternatively To stop the alarm press the CANCEL key for 3 sec onds Contact service technician for corrective actions Heat up time 08 00 00 07 00 00 06 00 00 D 05 00 00 15 45 E 15 50 04 00 00 A 15 55 15 60 03 00 00 02 00 00 7 2 2 7 10 15 20 25 30 35 40 43 Figure 17 Heat up time from 15 C water starting temperature Position Explanation 1 Time h 2 Ambient temperature C Installation Service and User Manual VMGFK202 31 11 4 9 11 5 11 5 1 11 5 2 Restart after long stop Note When the system is started again after a long time trial running included it is normal that the outlet water is unclean Keep tapping out water and it will become
12. Installation Service and User Manual DTW 300 SP VMGFK202 If these instructions are not followed during installation and service Danfoss A S liability according to the applicable war ranty is not binding Danfoss A S retains the right to make changes to components and specifications without prior notice 2011 Copyright Danfoss A S The English language is used for the original instructions Other languages are a translation of the original instructions Directive 2006 42 EC Contents 11 12 13 14 About this document and decals ccsesssessssssesseessessesssesseesseseee 3 1 1 Introduction 1 2 Symbols in documents 3 1 3 Symbols on decals Important information secssssecsesssssecseecssecsssccsscssessenecsssccsnseessees 4 2 1 General safety precautions sssesccssssscccsseececnsececenseecesneeeesnees 4 2 2 Refrigerant safety precautions ss ssssssssssssssssssssssssssssssesesssssere 5 2 3 Electrical connection safety precautions s sssssssssssseeresssses 5 2 4 Safety precautions for HOME OWNETS ssssssssssssssssrssssssssseersssse 6 COMPONENTS eesin esisi serat ro Eeke EE a EErEE r en ESE 7 Accessories nanganana nga E a R E aE 9 Installation Location sssssssssssssssssssssssssesessesssssesesessseeeeessssseeeersssssse 10 5 1 lnstallationspace na a AR A 10 5 2 Carrying the unit onto the site ssss sssssssssssessesssssssssssrssssseressss 11 Piping Connection sesssssssssssss
13. aying the error code and water temperature setting alternatively If the system is in ECONOMY mode and a malfunction occurs the system can still be operational by switching to E HEATER mode even though it could not reach the expected efficiency Contact your supplier for help A DANGER The heat pump cover must only be opened by authorised service technicians Table4 Error Codes Error Description Error Description code code EO Error of sensor T5U P1 System high pressure protection E1 Error of sensor T5L P2 Discharge pipe high temperature protection E2 Tank and Wired Controller communica P3 Compressor not running tion error E4 Evaporator pipe temperature sensor error P4 Compressor overload protection pumps Change mode to E heater mode to continue operation E5 Ambient temperature sensor error P8 Malfunction of electrical heater E6 Discharge pipe temperature sensor error P9 E heater overload protection E7 System error E8 Electrical leakage protection E9 TH sensor condenser failure LA Ambient temperature is not fit for heat If any of the above error codes occur call for service Operating Capability Water heating operating capability The following heating elements are included in the unit e Aheat pump e An electrical heater e Asolar coil These three heating elements cannot work together simultaneously The unit has two tank temperature sensors one is insta
14. be emptied Close the cold water inlet 1 Open the hot water outlet 2 Open the drainpipe 3 After emptying remount the drainpipe and close it pwn gt e The handle of the temperature and pressure valve should be pulled out once per half year to make sure that there is no jam Beware of the risk of scalding injuries because of the high water temperature The drainage pipe should be well installed in order to avoid freezing in cold weather conditions e Clean both the internal air filter and the air filter mounted in the flexible air duct option at least every month for best system performance If the ambient air contains a great amount of dust or other particles the air filters should be cleaned more frequently e Ifthe air filter is mounted directly in the air inlet that is an air inlet without a canvas duct the method of dismantle the filter is as follows Anti clockwise unscrew the air inlet ring N Take out the filter and clean it Finally remount the filter back in the unit w 12 3 Special Non error Conditions 12 3 1 3 min protection With the power supplied after shutting down an immediate restart will be delayed 3 minutes in order to protect the compressor If the self protection function causes the system to stop check the following e The power indicator is lit but the unit will not start The reason can be that it is forced to run although the startup requirements have not been met
15. clean after some time Legionella prevention Installation considerations and water temperature setpoint The output water temperature setpoint is recommended to be set so that the temperature at the customer con sumption output is above 50 C The reason is to prevent legionella in pipes and joints Also national rules may exist that set requirements for this condition When installing the product the installer must pay attention to this issue and adjust the water temperature set point of the application accordingly Automatic legionella prevention heat up function There is an automatic legionella protection function in the product control system Once the user turns on the mains supply to the unit which makes the pcb timer to start calculating or resets the time of the unit the unit will heat up the water up to 65 C on the next day at 23 00 This kills any possible legionella bacterias in the water inside the storage tank This function will be repeated on a weekly basis so after 7 days the unit will heat up the water to 65 C again and so on 32 Installation Service and User Manual VMGFK202 12 12 1 Maintenance To preserve optimal performance and prevent mal functions of the unit it should be checked and maintainded regularly Certain maintenance tasks must only be performed by an authorized service technician Caution Operation without water in water tank may result in damage of auxiliary e A heater Du
16. d User Manual VMGFK202 w a A gt 800 mm y A qu T Y gt 600 mm cece N gt oeoo gt 600 mm l oO D s a 650 mm Figure 3 Installation space continued distances Figure 4 Dimensions allows this arrangement The reason is to provide sufficient air flow and air exchange through the unit s inlet and outlet In the event that the room size does not allow this recommendation and that it is suspected that the air volume and flow will not be sufficient installing flexible duct connections should be considered Note The specification of 800 mm free space above the unit is only a recommendation if the room size 5 2 Carrying the unit onto the site e In order to avoid scratches or deformation of the unit surface apply guard boards to the contacting surface e Donot incline the unit more than 45 while it is moved and keep it vertical when installing e This unit is very heavy it must be carried by two or more people otherwise it may cause personal injury and damage
17. e local and national regulations 78 100 C ee re L d N OFT m 8 eo iL 73 C c 74 5S H T5y M 2 T5L lalz 1 m TP 779 m TH Les Figure 12 Wiring diagram Position Explanation 11 TCO 12 MTCO 20 Compressor 26 Electrical heater 22 Controller 29 Compressor relay K1 30 Electrical heater relay UE K2 8 2 Connecting external supply voltage DANGER Electrical voltage The terminal blocks are live and can be highly dangerous due to the risk of electric shock All power supplies must be isolated before electrical installation is started The heat pump is connected internally at the factory for this reason electrical installation consists mainly of the connection of the power supply 1 Route the power cable through the opening of the terminal block cover on the side of the unit and to the terminal block See Figure 1 Exploded view unit components Page 7 2 Connect the power cable to the terminal blocks according to the wiring diagram See Figure 12 Wiring dia gram Page 18 18 Installation Service and User Manual VMGFK202 Commisioning Before commissioning the system first check the following items e Correct installation of piping wiring and ducts e Efficient drainpipe open to air e Appropriate insulation protection e Correct earthing e Correct power supply e No obstacle outside or inside the air i
18. e set by user protection time It is blank in screen power save mode 5 LOCK indicator It is lit when the user interface 13 CLOCK indicator It displays the present time It is key pad is locked except the CANCEL button blank in screen power save mode 6 Water temperature indicator It is lit if the actual 14 E HEATER MODE indicator It is lit when the user water temperature exceeds 60 C selects the E heater mode 7 Water temperature indicator It is lit if the actual 15 HYBRID MODE indicator It is lit when the user water temperature exceeds 50 C selects the Hybrid mode 8 Water temperature indicator It is lit if the actual 16 ECONOMY MODE indicator It is lit when the user water temperature exceeds 40 C selects the Economy mode Key pad Position Explanation Gc Gace MODE A 1 ON OFF key used to turn the unit ON OFF 2 CANCEL key used to cancel the timer settings and unlock the user interface TIME 3 MODE key used to select different modes loop ing sequence ON g seq 4 UP key used to increase the time or temperature O 8 settings 5 CLOCK key used to set the present time 6 TIME ON key used to set the time for TIME ON timer 7 TIME OFF key used to set the time for TIME OFF timer 8 DOWN key used to decrease the time or temper ature settings Installation Service and User Manual VMGFK202 21 11 11 1 11 1 1 Operating instructions Start up When you power up the unit by turning
19. e to such damage the warranty is not valid Caution Water temperatures over 50 C can cause severe or even fatal scalding injuries Maintenance tasks for service technicians e Check the connection between the power supply and the ground wiring regularly e In cold areas below 0 C if the system is shut off for a long time water should be drained completely from the unit to avoid the risk of freezing inside the inner tank Freezing would possibly cause damage to the e heater or tank e Itis recommended to clean the inner tank and the e heater regularly to keep an efficient performance e Check the anode rod every half year and change it if it has been used out For more details contact the after sale service e How to change the anode rod 1 2 oe nNOW Ss Turn off the power and turn off the water inlet valve Open the hot water tap and decrease the pressure of the inner container Open the temperature pressure valve and drain out the water until there are no water flowing out of the tank Dismantle the anode rod according to instruction Replace it with a new one and make sure it is effectively sealed Open the cold water valve until water flows out of the open hot water tap Turn off the hot water tap Restart the system Installation Service and User Manual VMGFK202 33 12 2 Maintenance tasks for both home owners and service technicians If the unit needs cleaning moving etc the tank should
20. ecessary measures are not taken Warning Risk of personal injury Indicates a possible danger that can lead to fatal or serious injury if necessary measures are not taken A Caution Failure to observe a caution may result in injury or damage to the equipment A fourth symbol is used to give practical information or tips on how to perform a procedure Note Information regarding making the handling of the installation easier or a possible operational technical disadvantage Symbols on decals The following symbols can occur on decals on the different parts of the heat pump Warning symbols Warning danger Warning hazardous electrical voltage Installation Service and User Manual VMGFK202 3 2 2 1 Important information General safety precautions gt Caution This product is not intended for persons including children with reduced physical sensory or psychological capacity or who do not have knowledge or experience unless supervised or they have received instructions on how the apparatus functions from a safety qualified person Caution The heat pump must be located on a stable base The floor must be able to support the gross weight of the heat pump with filled hot water tank see Technical data Warning Electrical installation may only be carried out by an authorised electrician and must follow applicable local and national regulations DANGER Only authorized refrigeration technicians may
21. h m lt 10 lt 10 Bends pressure drop lt 2 lt 2 Pa Bends lt 5 lt 5 16 Installation Service and User Manual VMGFK202 Caution If the unit has a flexible air duct that reaches outside the building a reliable water resistant measure must be done on the duct to prevent water drop from entering the inside of the unit O i AIE Position Explanation n x 1 Outlet EN i 2 Inlet 3 Filter ll SSS ez Figure 10 Filter position at duct entrance Figure 9 Filter position at air inlet Caution To effectively drain condensate water from the evaporator install the unit on a horizontal floor or base Otherwise ensure that the drain vent is at the lowest place The inclination angle between the unit and the ground should not exceed 2 Position Explanation 1 Drain Figure 11 Inclination angle not more than 2 Installation Service and User Manual VMGFK202 17 8 Electrical Connection 8 1 Electrical wiring illustration Warning Electrical installation may only be carried out by an authorised electrician and must follow applicabl
22. ion DANGER Only authorized refrigeration technicians may work on the refrigerant circuit System modifications Only authorized installers may carry out service on the following components e The air source heat pump e The lines for refrigerant water and power e The safety valve Do not carry out construction installations that may affect the operational safety of the unit Safety valve The following safety precautions apply to the hot water circuit s safety valve with corresponding drain pipe e Never block the connection to the safety valve s overflow pipe e Water expands when it is heated this means that a small amount of water is released from the system via the overflow pipe The water that exits the overflow pipe can be hot Therefore allow it to flow to a floor drain where there is no risk of burn injuries due to scalding 6 Installation Service and User Manual VMGFK202 3 Components The component image below shows diagrammatically how the air source heat pump from now on also called the unit looks inside Figure 1 Exploded view unit components Table 1 Parts Name Position Description Position Description 1 Air outlet 18 Top cover 2 Filter 19 Electronic control box 3 Evaporator 20 Compressor 4 Fan assy 21 Front cover 5 Junction box cover 22 Display 6 Rear cover 23 Cover temperature safety function 7 Junctio
23. ion of power supply Outlet water is set to a low temperature Outlet water temperature controller is damaged Indicator or circuit board is damaged Contact a technician Set the outlet water to a higher temperature Contact a technician Contact a technician No hot water from the outlet Tap water has been cut away Water pressure is too low Inlet valve has been closed It will return to normal after water has been supplied Use it when the pressure is higher Open the inlet water valve Water leakage The joints on the pipeline are not well sealed Check and reseal all joints 12 5 After Sale Service If the unit runs into some sort of malfunction or error except a Non error malfunction it should be shut down and the power supply switched off Contact your local service center or supplier for help Installation Service and User Manual VMGFK202 35 13 Disposal Instructions Do not dispose this product as unsorted municipal waste Collection of such waste separately for special treatment is necessary Do not dispose of electrical appliances as unsorted municipal waste use separate collection facilities Contact you local government for information regarding the collection systems available 36 Installation Service and User Manual VMGFK202 14 Technical data Model RSJ 35 300RDN3 B Mode Economy Mode Hybrid Mode E heater Mode Rated power AMPS 1500W
24. lashing a we Z d an LY te is The user then has two options e User does not operate the unit o Ifthe ambient air temperature stays out of the allowed operating range for a period of more than 20 hours the unit will automatically start the electrical heater to heat the water to the setpoint value The unit will continue to operate the hot water heating using the electrical heater until the ambient air tempera ture returns within the allowed operating range o When the ambient air temperature returns within the allowed operating range the warning code LA is reset and the unit returns back to normal operation of ECONOMY mode e Switch manually from ECONOMY to E HEATER mode o This will ensure that enough volume of hot water is supplied o The unit will run in E HEATER mode even if the air temperature returns back to the range of 7 to 43 C Troubleshooting If an error occurs a buzzer will sound 3 times every other minute and the ALARM indicator will flash quickly An error code will be displayed The buzzer sound can be stopped by pressing CANCEL for several seconds although the ALARM indicator will still be flashing The ALARM indicator will flash quickly if an error occurs Press CANCEL to stop the buzzer The error code and water temperature are displayed alternatively Contact your installer for help 28 Installation Service and User Manual VMGFK202 11 4 11 4 1 TEMP SET Ci OO Displ
25. lashing stops and the TIME ON setting is completed 11 1 6 Cancelling the timer In an unlocked state press the CANCEL key 1 second and the TIME ON function will be can celled Cr 11 1 7 Setting both Time ON and TIME OFF By using both the TIME ON and TIME OFF functions the user can set a desired start and stop time for the unit When the start time is set before the stop time the unit will run between these time settings When the start time is later than the stop time the unit will run between the start time the same day and the stop time the next day If the user tries to set the same value for both start time and stop time the stop time will automatically be delayed by ten minutes For example if the user sets both TIME ON and TIME OFF to 01 00 TIME OFF will automatically be adjusted to 01 10 Note e The TIME OFF function cannot be used alone The function can only be used after TIME ON has been set User can press the on off key manually beyond the timer range Press the TIME ON key the minute digit of the clock on the display starts flashing slowly Installation Service and User Manual VMGFK202 25 Press the UP or DOWN key to adjust the minute setting Press the TIME ON key again the minute digit stops flashing and the hour digit starts Press the UP or DOWN key to adjust the hour setting Press the TIME ON key again to confirm or wait 10 seconds Press the TIME OFF key the minute digit on the display
26. licable local and national regulations i Caution The electrical installation must be carried out using permanently routed cables It must be possible to isolate the power supply using an all pole circuit breaker with a minimum contact gap of 3 mm DANGER Hazardous electrical voltage The terminal blocks are live and can be highly dangerous due to the risk of electric shock All power supplies must be isolated before electrical installation is started Installation Service and User Manual VMGFK202 5 2 4 2 4 1 2 4 2 2 4 3 Safety precautions for home owners DANGER The heat pump cover must only be opened by authorised service technicians Caution This product is not intended for persons including children with reduced physical sensory or psychological capacity or who do not have knowledge or experience unless supervised or they have received instructions on how the apparatus functions from a safety qualified person Warning Children are not permitted to play with the product The system can be considered maintenance free but certain checks are necessary Before changing the control computer s settings first find out what these changes mean Contact your installer for any service work Installation and maintenance DANGER Only authorized installers may install operate and carry out maintenance and repair work on the heat pump DANGER Only authorized electricians may modify the electrical installat
27. lled at the upper part of the tank 35 and the other at the bottom 36 See Figure 16 Heating elements Page 30 The upper one measures the upper temperature in the Installation Service and User Manual VMGFK202 29 tank and the bottom one is used to measure the lower water temperature The lower sensor controls the ON amp OFF of the unit although this temperature is not shown in the display Position Explanation Ie 65 1 Outlet O g 2 Electrical heater eC 3 Tank coil solar coil OSE 4 Inlet O 35 Upper tank sensor T5U 36 Lower tank sensor T5L Figure 16 Heating elements e Economy mode in this mode according to the water temperature setting the heat pump is in prefer ence against the electrical heater the water outlet temperature range is within 38 60 C running ambient from 7 C up to 43 C If the air temperature is too low the electrical heater will start even in Economy mode e Hybrid mode in this mode the system will adjust the working capabilities of the electrical heater and the unit according to the tank water temperature water outlet temperature range is within 38 60 C running ambient from 30 C up to 43 C e E heater mode in this mode the compressor and the fan motor will not run only the electrical heater works the water outlet temperature range is within 38 60 C running ambient between 30 C up to 43 C Note In E heater mode only one half ta
28. lly and exposed in the air e Donot press the handle of the temperature and pressure valve 1 When checking the safety function the handle is pulled towards you until a small amount of water is released e Do not dismantle the valve e Do not block the drainage pipe 2 It can cause injury if not comply ing with the above instruction Non return valve The specification of the Non return valve thread in accessories is DN20 RC3 4 It is used to prevent backflow of water Tank affusion After all pipes have been installed open the cold water inlet and hot water outlet and start affusing the tank When the water flows out from the water outlet the tank is full Turn off the outlet tap and check all pipes If there is any leakage repair it Water pressure and drainage e Ifthe inlet water pressure is less than 1 5 bar a pressure pump should be installed at the water inlet e To guarantee the lifetime of the tank if the water supply hydraulic pressure is higher than 5 bar a reducing valve must be mounted at the water inlet pipe e To minimize the risk of damage due to water leakage or because of blocked drainage it is recommended to use a water collector Q p Position Explanation 1 t t lt 22 mm 2 Unit 3 50 mm larger than the diameter of the unit Pa Figure6 Water collector Solar energy coil electrical instruction e This product does not provide a solar energy control syste
29. lock the connections to the temperature and pressure valve Water expands when it is heated this means that a small amount of water is released from the system via the overflow pipe The water that exits the overflow pipe can be hot Therefore allow the water to flow to a floor drain where there is no risk of burning yourself or causing damage to the floor and building Do not remove the front panel Some parts inside are dangerous to touch and a machine malfunction may be caused Do not touch the inner parts of the controller The heating system will stop or restart automatically A continuous power supply for water heating is therfore necessary except when performing service and maintenance If the unit is installed in a space without heating there is a risk of freezing damage if the power is turned off during cold weather conditions Ensure that the system is drained from water if it is necessary to turn off the power during such circumstances Refrigerant safety precautions A DANGER Only authorized refrigeration technicians may work on the refrigerant circuit Although the cooling system refrigerant circuit is filled with a chlorine free and environmentally approved refrig erant that will not affect the ozone layer work on this system may only be carried out by authorized persons Electrical connection safety precautions DANGER Electrical installation may only be carried out by an authorized electrician and must follow app
30. m It only provides two signals to be used for inte gration with an external solar energy control system The installer must ensure the integration between this product and the external solar energy control system e The mainboard of the unit has two deicated ports used for connecting a solar thermal CN17 ON OFF and CN18 Feedback ports These ports ensure that the unit and solar thermal does not work simultaneously Installation Service and User Manual VMGFK202 13 e The CN17 ON OFF port is used for receiving the control signal of the solar energy water heating system this signal must be a potential free switch signal When the unit is sending a closing signal the system will be blocked for operation and cannot open to heat when the sending an open circuit signal the system will be activated for operation and the unit will operate according to the preset condition e The CN18 feedback port is used to send open stop feedback to the solar thermal control The feedback con sists of high and low level signals When the terminal is low level OV for outlet it means that the unit is in active state when the terminal is high level 5V for outlet it means that the unit is blocked for operation Caution If the water temperature from the solar thermal get overheated it may trig the built in temperature function in the unit The automatically reset temperature protection switch TCO is triggered when exceeding an operating tempera ture of
31. n box 24 Front board 8 Temperature and pressure valve 25 Cover electrical heater 9 Anode rod 26 Electrical heater 10 Hot water outlet 27 Water inlet 11 Temperature cut off TCO 28 Receiver 12 Manual reset Temperature Cut Off MTCO 31 Evaporator pipe temperature sensor T3 13 Solar sensor 32 Ambient temperature sensor T4 14 Solar water inlet 33 Suction temperature sensor TH 15 Solar water outlet 34 Discharge pipe temperature sensor TP Installation Service and User Manual VMGFK202 7 Position Description Position Description 16 Drain 35 Upper tank sensor T5U 17 Air inlet 36 Lower tank sensor T5L Note All the diagrams and figures in this manual are for explanation purposes only They may be slightly different depending on model from the real product you have purchased 8 Installation Service and User Manual VMGFK202 Accessories Table 2 Accessories included in delivery Accessory Name Purpose Quantity Installation service and user man Installation service and user instruction this manual 1 ual O Non return valve a Prevent water from flowing back 1 Adaptor i Drain condensate water 1 Installation Service and User Manual VMGFK202 9 5 Installation Location Ensure that the following applies for the installation location A Enough space for installation and maintenance shall be preserved The circulating air for each unit must
32. nk of water i e 150L can be heated each time This due to the physical position of the electrical heater 11 4 2 Defrosting during water heating In the ECONOMY or HYBRID mode if the evaporation freezes as a result of cold circumstances the system will automatically defrost 3 10 minutes in order to maintain an effective performance 11 4 3 Ambient temperature operating range The system s operation temperature is within the range from 30 C up to 43 C The operation temperature for each mode is shown below e Economy Mode From 7 C up to 43 C e Hybrid Mode From 30 C up to 43 C e E heater Mode From 30 C up to 43 C 11 4 4 Mode selection The unit can run in three modes to meet different demands and the following are the recommended selections e ECONOMY mode From 7 C up to 43 C a continuous hot water demand below 250L recommended set point is 60 C e HYBRID mode From 30 C up to 43 C a continuous hot water demand between 300 350L recommended set point is 60 C e _E HEATER mode From 30 C up to 43 C a continuous hot water demand up to 150L recommended set point is 60 C 11 4 5 Self protection apparatuses e The unit has an automatic self protection function where it continuously performs a self check sequence If an error occurs it will be presented on the display All kinds of errors will lead to a self protection state e When this happens the unit will stop and start the self check
33. nlet or outlet e Noair in the water piping and all shut off valves opened e Sufficient inlet water pressure 21 5 bar To commision this unit follow the steps below A Caution Operation without water in water tank may result in damage of auxiliary e Py f heater Due to such damage the warranty is not valid Caution Water temperatures over 50 C can cause severe or even fatal scalding injuries Caution If the unit is used for the first time or used again after emptying the tank make sure that the tank is filled with water before turning on the power To fill the tank with water 1 Open the cool water inlet 1 and hot water outlet 2 2 When water flows out from the water outlet the tank is full 3 Turn off the hot water valve 3 pO 9 5 II Start the unit set the operational mode and temperature settings as described in Operating instructions Page 1 Installation Service and User Manual VMGFK202 19 10 Control system 10 1 Control panel explanation Position Explanation Display with indicators Key pad for operation AJ nich Tene TERS Acar Ee economy mone 4 Druwa d oo 8 a a o a HYBRID MODE Il Lies Li sap LIL OUTLET TEMP EHENTER MODE Qmo 6 TIME OFF pa 8 Figure 13 Control panel 10 2 Display explanation 16 P ds ie Figure 14 Example display layout with all digital segment
34. ree modes in a cycle Meanwhile the corresponding indicator on the display is lit re Installation Service and User Manual VMGFK202 23 11 1 4 Setting temperature The temperature displayed is the water temperature in the upper part of the tank The default setting is 55 C and the range is 38 60 C Press the UP or DOWN key to increase or decrease the water temperature When the temperature setting is higher than 50 C the HIGH TEMP indicator will be displayed as a warning Ail We g Na Z YA HIGH TEMP 11 S gt _ 11 1 5 Timer User can set up a running start time using the timer function The shortest time to set is ten minutes TIME ON You can set a start time in advance using this function The unit will start running at the time set and continue until 24 00 the same day provided that the time is set to a time the same day If the time is set to a time the next day the unit will start running the next day at this time and continue until 24 00 that day Press the TIME ON key the minute digit of the clock on the display starts flashing slowly Press the UP or DOWN key to adjust the minute setting ORO Press the TIME ON key again the minute digit stops flashing and the hour digit starts flash ing 24 Installation Service and User Manual VMGFK202 Press the UP or DOWN key to adjust the hour setting Press the TIME ON key again and wait about 10 seconds The f
35. s lit Posi Description Position Description tion 1 HIGH TEMP indicator When the temperature 9 OUTLET TEMP indicator It displays the water tem setting exceeds 50 C this indicator is dis perature in the upper part of the tank that is the played to remind you that the outlet tempera water you are using It is always lit ture is too high for direct spray 2 FILL WATER indicator When the power supply is 10 TIMER CONFLICT indicator It is lit when the tem turned on this indicator is displayed to remind perature you set through the Wired Controller you to re affuse fill tank with water Pressing optional conflicts with that set through the con the ON OFF button after the tank has been fil trol panel led with water clears this indicator 3 ALARM indicator It will flash during a malfunc 11 TIME OFF indicator It is lit when a time for TIME tion or in a self protection situation OFF has been set Must be combined with a TIME ON setting It is blank in screen power save mode 20 Installation Service and User Manual VMGFK202 Posi Description Position Description tion 4 TEMP SET indicator Shows the temperature set 12 TIME ON indicator It is lit when a time for TIME ON ting It is blank in screen power save mode Error has been set Can be set alone timer starts before codes are displayed here during malfunction or or after 24 00 depending on the valu
36. sssssssssssssssssssssssssssesseerecccereeceeeereeeeee 12 6 1 Water inlet and outlet pipes sssss sssssssssssssssssssssssssssssssssssssseesss 12 6 2 Temperature and pressure valve 6 3 Non return valve 6 4 Tank affusion 6 5 Water pressure and drainage ssssssssccsssecccsseecesssesecsneeeeenees 13 6 6 Solar energy coil electrical instruction sssssssssssssssssssssssssss 13 Duct COMMECTIONS sssiscsissseissoascessscicosssssssasnsstasscsdssnsvasnasscaicnsnvabaieace 15 Electrical Connection seesssssescssesceseecsssececsteccssecesneeesseeenseerseeees 18 8 1 Electrical wiring illustration on eeesssssescecssescecensscecsneeceeeneeeees 18 8 2 Connecting external supply voltage sss ssssssssssssssssssssssressss 18 COMMISIONIAG sesciccsasssaisscssssoconaisanasasssssbessasoeatsansesibeciusseadsenssssecoeaies 19 Control Syste Mnn aneis 20 10 1 Control panel explanation ss ssssssssssssssssssssssssessssesrsssssesssseressse 20 10 2 Display explanation ssssssssssssssssssssesssssssssssssssessssssserssssseerssssseee 20 10 3 K ey padinan a 21 Operating INStrUCTIONS ssssssssssssssssssssssssssssssssssssssssssssssersssssseeesssse 22 11 1 Start up 11 2 Operational status 11 3 Troubleshooting 11 4 Operating Capability 11 5 Legionella prevention ou esssssssccsssssscsssescessseceesnsecsesnneseenneeees 32 MaiNteE Nae sereccsssucssssssscsecsuscatedestusavegnssves ssnscacosesnstuveasssssvedeesscaeetse
37. starts flashing slowly ei lt gt Press the UP or DOWN key to adjust the minute setting 26 Installation Service and User Manual VMGFK202 Press the TIME OFF key again the minute digit stops flashing and the hour digit starts Press the UP and DOWN key to adjust the hour setting If the operation is inactive for about 10 seconds the flashing stops and the TIME ON and TIME OFF setting is completed 11 1 8 Cancelling TIME ON and TIME OFF In an unlocked state press the CANCEL key for 1 second the TIME ON and TIME OFF setting will be canceled Cr 11 2 Operational status When running in HYBRID mode the system will adjust the working capabilities between the electrical heater and the compressor according to ambient temperature and the tank water temperature When running in E HEATER mode the compressor and the fan motor will not run only the electrical heater works heating the water to the setpoint value Installation Service and User Manual VMGFK202 27 11 3 When running the heat pump in ECONOMY mode and the ambient temperature does not meet the operational conditions allowed operating range of the unit that is the temperature is less than 7 C or more than 43 C the unit stops and an LA code will be displayed Warning code when the current mode is in conflict with the operational conditions for this mode Temp Set When an error occurs the alarm indicator will start f
38. work on the refrigerant circuit DANGER e The unit must be earthed effectively in order to avoid the risk of an electrical shock e In order to avoid electric shock fire or injury if any abnormality is detected such as smell of fire turn off the power supply and call your service agent for instructions e Ifthe supply cord is damaged it must be replaced to avoid hazards Warning e Do not insert fingers rods or other objects into the air inlet or outlet since the fans rotate at high speed and may cause injuries e Never touch the air outlet or the horizontal blades while the swing flap is in operation This may cause injury e Never put any objects into the air inlet or outlet Objects touching the fan at high speed can be dangerous causing injuries or seroiusly damage the unit Caution e Do not tear off labels on the unit with the purpose of warning or reminding e Never use a flammable material such as hair spray or lacquer paint close to the unit It may cause a fire 4 Installation Service and User Manual VMGFK202 2 2 2 3 Caution Before installation decide a safe and reliable way of conveying the unit To prevent injury a mixing valve must be installed on the outlet if the hot water temperature may rise over 65 C for example when using solar energy solutions In order to avoid injury do not remove the fan guard on the outdoor unit At the water inlet side a check valve must be installed Never b
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