Daikin SEHVX20BAW Installer And User Reference Manual Download

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Installer and user reference guide

Split packaged air-cooled water chiller

English

Installer and user

reference guide

Split packaged air-cooled water chiller

SERHQ020BAW1
SERHQ032BAW1

SEHVX20BAW
SEHVX32BAW
SEHVX40BAW
SEHVX64BAW

Summary of Contents for SEHVX20BAW

Page 1: ... user reference guide Split packaged air cooled water chiller English Installer and user reference guide Split packaged air cooled water chiller SERHQ020BAW1 SERHQ032BAW1 SEHVX20BAW SEHVX32BAW SEHVX40BAW SEHVX64BAW ...

Page 2: ... component box of the outdoor unit 17 6 2 5 To open the electrical component box of the indoor unit 18 6 3 Mounting the outdoor unit 18 6 3 1 About mounting the outdoor unit 18 6 3 2 Precautions when mounting the outdoor unit 18 6 3 3 To provide the installation structure 18 6 3 4 To provide drainage 18 6 4 Mounting the indoor unit 18 6 4 1 About mounting the indoor unit 18 6 4 2 Precautions when ...

Page 3: ...em 59 16 3 3 Space cooling operation 59 16 3 4 Space heating operation 59 16 3 5 Other operation modes 60 16 3 6 Schedule timer 60 16 3 7 Operating the optional demand PCB 64 16 3 8 Operating the optional external control adapter 64 16 3 9 Operating the optional remote controller 64 17 Maintenance and service 64 17 1 About the refrigerant 65 17 2 After sales service and warranty 65 17 2 1 Warranty...

Page 4: ...r operate the unit contact your dealer NOTICE Improper installation or attachment of equipment or accessories could result in electric shock short circuit leaks fire or other damage to the equipment Only use accessories optional equipment and spare parts made or approved by Daikin WARNING Make sure installation testing and applied materials comply with applicable legislation on top of the instruct...

Page 5: ... After all the piping has been connected make sure there is no gas leak Use nitrogen to perform a gas leak detection NOTICE To avoid compressor breakdown do NOT charge more than the specified amount of refrigerant When the refrigerant system is to be opened refrigerant MUST be treated according to the applicable legislation WARNING Make sure there is no oxygen in the system Refrigerant may only be...

Page 6: ...e When installing the earth leakage protector make sure it is compatible with the inverter resistant to high frequency electric noise to avoid unnecessary opening of the earth leakage protector NOTICE Precautions when laying power wiring Do NOT connect wiring of different thicknesses to the power terminal block slack in the power wiring may cause abnormal heat When connecting wiring which is the s...

Page 7: ...ration What to do and know to configure the system after it is installed Operation Operation of the units Commissioning What to do and know to commission the system after it is configured Hand over to the user What to give and explain to the user Maintenance and service How to maintain and service the units Troubleshooting What to do in case of problems Disposal How to dispose of the system Techni...

Page 8: ...osion effect may decrease 3 2 3 To remove the accessories from the outdoor unit Make sure that all accessories are available in the unit 1 1 1 1 1 1 1 e a c d f g b a General safety precautions b Fluorinated greenhouse gases label c Multilingual fluorinated greenhouse gases label d Gas side accessory pipe e Gas side accessory pipe f Liquid side accessory pipe g Liquid side accessory pipes 3 3 Indo...

Page 9: ...ning the split system with options Where the outdoor and indoor units fit in the system layout 4 2 Identification NOTICE When installing or servicing several units at the same time make sure NOT to switch the service panels between different models 4 2 1 Identification label Outdoor unit Location Model identification Example SE RH Q 020 BA W1 Code Explanation SE Special European model RH Outdoor l...

Page 10: ...wn area Heating 0 35 25 5 15 5 EWC 20 25 35 50 LWC TA A B TA Ambient temperature C DB LWC Leaving water condenser temperature C EWC Entering water condenser temperature C A Pull up area B Standard water operation range 4 3 Combining units and options 4 3 1 Possible options for the split system INFORMATION Refer to the technical engineering data for the latest option names Remote controller EKRUAHT...

Page 11: ...cause water leakage 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 CAUTION Appliance NOT accessible to the general public install it in a secured area protected from easy access This unit is suitable for installation in a commercial and light industrial environment When installing...

Page 12: ...ter leakage 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 CAUTION Appliance NOT accessible to the general public install it in a secured area protected from easy access This unit is suitable for installation in a commercial and light industrial environment 5 3 Preparing refrigera...

Page 13: ... or particles entering the pipe Use a decent thread sealant to seal connections Capacity class Minimum required flow rate 20 23 l min 32 36 l min 40 46 l min 64 72 l min Field supply components Water pressure and temperature Check that all components in the field piping can withstand the water pressure and water temperature Drainage Low points Provide drain taps at all low points of the system in ...

Page 14: ... 152 64 220 INFORMATION In critical processes or in rooms with a high heat load extra water might be required INFORMATION The temperature step difference can be modified using settings A 02 and F 00 This has an impact on the minimum water volume required when the unit operates in cooling By default the unit is set to have a water temperature difference of 3 5 K which allows it to operate with the ...

Page 15: ...nto account Only use dry nitrogen to set the expansion vessel pre pressure Inappropriate setting of the expansion vessel pre pressure will lead to malfunction of the system Changing the pre pressure of the expansion vessel should be done by releasing or increasing nitrogen pressure through the Schrader valve of the expansion vessel a a Schrader valve 5 4 5 To check the water volume Examples Exampl...

Page 16: ... 0 25 1639 SEHVX64BAW 0 22 1747 The local wiring power cord must comply with IEC60245 The wiring type in protected pipes must be H05VV H07RN F must be used in unprotected pipes 5 5 3 Cable requirements Item Cable bundle Description Required number of conductors Maximum running current 1 PS Indoor unit power supply 4 GND b 2 LV Communication cable between indoor unit and outdoor unit 2 d d 3 LV Sta...

Page 17: ...he outdoor unit on page 17 For service purposes the pushbuttons on the main PCB need to be accessed To access these pushbuttons the electrical component box cover does not need to be opened See 7 2 3 To access the field setting components on page 32 6 2 3 To open the indoor unit DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING To gain access to the unit front plates need to be opened as follows...

Page 18: ...t allowed O Allowed The height of the foundation must at least be 150 mm from the floor In heavy snowfall areas this height should be increased depending on the installation place and condition The preferred installation is on a solid longitudinal foundation steel beam frame or concrete 722 737 67 67 765 67 67 A B Minimum foundation Outdoor unit A B SERHQ020 930 792 SERHQ032 1240 1102 Fasten the u...

Page 19: ...f the top plate b a a Attach one L shaped support to the left side of the top plate using 2 screws from the accessory bag b Attach the other L shaped support to the right side of the top plate using 1 screw from the accessory bag and 1 screw that is already attached to the unit 6 5 Connecting the refrigerant piping 6 5 1 Precautions when connecting the refrigerant piping INFORMATION Also read the ...

Page 20: ...The following illustrations show each part required in handling the valve c d a b a Service port and service port cover b Stop valve c Field piping connection d Stop valve cover a b c d e a Service port b Stop valve cover c Hexagon hole d Shaft e Seal Keep both stop valves open during operation Do NOT apply excessive force to the stop valve Doing so may break the valve body To open close the stop ...

Page 21: ...f refrigerant gas leaks ventilate the area immediately Possible risks Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency Toxic gas may be produced if refrigerant gas comes into contact with fire WARNING NEVER directly touch any accidental leaking refrigerant This could result in severe wounds caused by frostbite The refrigerant piping can be installed from the fron...

Page 22: ...llowing remaining oil to drip out in case the recovery was not complete Wait until all oil has dripped out 8 Cut the pinched piping off with a pipe cutter just above the brazing point or just above the marking if there is no brazing point 9 Wait until all oil is dripped out in case the recovery was not complete and only then proceed with connection of the field piping a b c b c B A a Service port ...

Page 23: ...s when checking the refrigerant piping INFORMATION Also read the precautions and requirements in the following chapters General safety precautions Preparation NOTICE Use a 2 stage vacuum pump with a non return valve that can evacuate to a gauge pressure of 100 7 kPa 1 007 bar 5 Torr absolute Make sure the pump oil does not flow oppositely into the system while the pump is not working NOTICE Use th...

Page 24: ...s Preparation WARNING Only use R410A as refrigerant Other substances may cause explosions and accidents R410A contains fluorinated greenhouse gases Its global warming potential GWP value is 2087 5 Do NOT vent these gases into the atmosphere When charging refrigerant always use protective gloves and safety glasses NOTICE If the power of some units is turned off the charging procedure cannot be fini...

Page 25: ...ses 2 1 1 1 2 2 kg tCO2 eq GWP kg 1000 kg kg GWP XXX RXXX a f c d e a If a multilingual fluorinated greenhouse gases label is delivered with the unit see accessories peel off the applicable language and stick it on top of a b Factory refrigerant charge see unit name plate c Additional refrigerant amount charged d Total refrigerant charge e Greenhouse gas emissions of the total refrigerant charge e...

Page 26: ... be at least 13 mm with λ 0 039 W mK If the temperature is higher than 30 C and the humidity is higher than RH 80 the thickness of the insulation materials should be at least 20 mm to prevent condensation on the surface of the insulation 6 9 Connecting the electrical wiring 6 9 1 About connecting the electrical wiring Before connecting the electrical wiring Make sure The refrigerant piping is conn...

Page 27: ...ller refer to the installation manual of the central remote controller NOTICE Use insulated wire for the power cord NOTICE Be sure to install an earth leakage breaker that is capable of handling high frequency electrical noise generated by the inverter in order to prevent malfunctioning of the earth leakage breaker The noise generated by the inverter must be reduced in order to avoid interfering w...

Page 28: ...e power supply To route and fix the power supply of the outdoor unit Route the power wiring and the transmission wiring through a conduit hole Route the power wiring though the upper hole in the left side plate from the front position of the main unit through the conduit hole of the wiring mounting plate or from a knockout hole in the unit s bottom plate a b c d e f g a Electric wiring diagram pri...

Page 29: ... to the same earth SERHQ020 a g c d b i g e j h f f f SERHQ032 f f g g i h e j f a c d b f f a Electrical wiring b Wiring between units c Earth wire d Clamp to the electrical component box with field supplied clamps e When routing out the power ground wires from the right side f Clamp to the back of the column support with field supplied clamps g When routing out the inter unit wirings from the op...

Page 30: ...nals as shown on the wiring diagram 3 Fix the cables with cable ties to the cable tie mountings to ensure strain relief and to make sure that they do not come in contact with the piping and sharp edges Never squeeze bundled cables 4 Close the electrical component box cover VRV C2 VRV C1 e d f C2 f C1 c b A5P C2 A1P C1 A3P C1 X1M K1P K1S A8P C2 X2M X4M F1F2 F1F2 X3M A6P A4P F1F2 F1F2 a a Switchbox ...

Page 31: ...nal noise Peel the shield for the part that has to pass through the inside of the user interface case L L 4 Reattach the upper part of the user interface starting with the clips at the bottom 1 CAUTION Do NOT pinch the wiring when attaching If in addition to the standard user interface an optional user interface EKRUAHTB is installed as well 5 Connect the electrical wires of both user interfaces a...

Page 32: ... 1 H1P is off 7 2 2 Field setting components The components to make field settings are as follows BS2 SET BS1 MODE BS3 RETURN BS4 TEST BS5 RESET H7P MODE TEST L N O P DEMAND C H SELECT HWL IND MASTER SLAVE MULTI H1P H2P H3P H4P H5P H6P H8P H1P H8P LEDs BS1 BS5 Pushbuttons DS1 DS3 DIP switches ON OFF Flashing Pushbuttons Use the pushbuttons to make the field settings BS1 MODE For changing the set m...

Page 33: ...or unit and system What How Changing and accessing the setting in mode 2 Once mode 2 is selected push BS1 for more than 5 seconds you can select the wanted setting It is done by pushing BS2 Accessing the selected setting s value is done by pushing BS3 1 time To quit and return to the initial status Press BS1 What How Changing the value of the selected setting in mode 2 Once mode 2 is selected push...

Page 34: ...ring night time By changing this setting you activate the automatic low noise operation function of the unit and define the level of operation Depending on the chosen level the noise level will be lowered default Deactivated Level 1 Level 3 Level 2 Level 1 Level 2 Level 3 Low noise operation level via the external control adaptor If the system needs to be running under low noise operation conditio...

Page 35: ...iate field setting first code 3 Press to select the appropriate field setting second code 4 Press and to change the value of the selected field setting 5 Press to save the new value 6 Repeat the previous steps to change other field settings as required 7 When finished press to exit the field setting mode INFORMATION Changes made to a specific field setting are only stored when is pressed Navigatin...

Page 36: ...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 you should consult the last programmed command this may date from the day before The controller is switched off operation LED off but the schedule timer icon remains on Press The schedule timer for space heati...

Page 37: ...temperature setpoint B Room setback temperature 5 03 t Time T Temperature Setback configured for leaving water temperature control 2 01 2 02 B A T t 45 C 40 C 5 C 5 02 A Normal leaving water temperature setpoint B Leaving water setback temperature 5 02 t Time T Temperature See field setting 5 in this chapter for temperature setpoints 2 00 Status 2 00 Description 0 The setback function is disabled ...

Page 38: ...stat input 1 heating operation ON 1 OFF 0 External room thermostat input 2 cooling operation ON 1 OFF 0 2 External room thermostat input 1 operation ON 1 OFF 0 External room thermostat input 2 cooling 1 heating 0 7 Option setup 7 00 Forced pump operation 7 00 Description 0 The pump performs intermittent sampling during thermo off conditions This setting is often used when the unit is controlled by...

Page 39: ...aving water setpoint in cooling operation This depends on field setting A 04 C 04 This setting is not applicable d Settings are not applicable E Service mode E 00 This setting is not applicable E 01 This setting is not applicable E 02 This setting is not applicable E 03 This setting is not applicable E 04 Pump only operation air purge function When installing and commissioning the unit it is very ...

Page 40: ...se injury INFORMATION During the first running period of the unit the required power may be higher than stated on the nameplate of the unit This phenomenon is caused by the compressor that needs a continuous run time of 50 hours before reaching smooth operation and stable power consumption NOTICE Be sure to turn on the power 6 hours before operation in order to have power running to the crankcase ...

Page 41: ...Be sure that the field wiring has been carried out according to the instructions described in the chapter 6 9 Connecting the electrical wiring on page 26 according to the wiring diagrams and according to the applicable legislation Power supply voltage Check the power supply voltage on the local supply panel The voltage MUST correspond to the voltage on the identification label of the unit Earth wi...

Page 42: ... performed according to the procedures described below At any time it is possible to check correct operation and space heating INFORMATION During the first start up of the unit the first 48 hours of compressor running the noise level of the unit may be higher than mentioned in the technical specifications This is not an abnormal event 8 6 1 To display the temperature on the remote controller The a...

Page 43: ... in for each unit Ensure the user has a printed version of the installation and operation manual Explain to the user what system is installed on site Explain to the user how to properly operate the system and what to do in case of problems Show the user what has to be done in relation to maintenance of the unit 8 9 To complete the model fill in Complete the following fill in for each unit Place of...

Page 44: ...eration and operation is prohibited 2 Evacuate the system with a vacuum pump 3 Press BS1 and reset setting mode 2 9 3 2 To recover refrigerant This should be done by a refrigerant reclaimer Follow the same procedure as for vacuuming method 1 With the unit at a standstill and setting mode 2 active set the required field setting refrigerant recovery operation vacuuming operation see 7 2 8 Mode 2 Fie...

Page 45: ...al dealer R410A liquid thermistor error R13T R23T Check wiring connections Contact your local dealer Returning water thermistor error R12T R22T Check wiring connections Contact your local dealer Heating leaving water thermistor error R11T R12T Check wiring connections Contact your local dealer User interface thermostat thermistor error Contact your local dealer High pressure error SENPH S1PH Check...

Page 46: ...ve obstacles the wall heights of sides A C have no impact on service space dimensions Refer to the figure for impact of wall heights of sides B D on service space dimensions In case of an installation site where only sides A B have obstacles the wall heights have no influence on any indicated service space dimensions b a c d A C B D a e b d e A C B D 2 1 c a c e b d f A C B D 3 a c e b b d A C B D...

Page 47: ...EHVX20 64BAW Split packaged air cooled water chiller 4P508020 1B 2018 04 766 5 500 200 396 500 mm CAUTION Make sure the right service panel can still be removed after installation of the piping INFORMATION Further specifications can be found in the technical engineering data ...

Page 48: ... h i a a j j k k m l l m m o n n d d d d p d d d 20 kW a b b c d f e g h i a a a l o l l k k m m m m d d n n n d d d d d j j j d p d 32 kW a Check valve b Electronic expansion valve c Pressure regulating valve d Filter e Fan f Heat exchanger g Accumulator h 4 way valve i High pressure sensor j High pressure switch k Solenoid valve l Compressor m Capillary tube n Oil separator o Low pressure sensor...

Page 49: ...T A B h g k C D a Air purge valve b Temperature sensors R11T R12T R13T R14T c Expansion vessel 12 l d Shut off valve field installed e Water inlet connection f Water outlet connection g Drain port h Water filter i Pressure gauge j Flow switch k Pump l Safety valve m Check valve n Electronic expansion valve o Heat exchanger p Filter A Water side B Refrigerant side C Refrigerant flow in cooling mode...

Page 50: ...tor compressor M1F M2F Motor fan PS Switching power supply A1P A3P Q1DI Earth leakage circuit breaker field supply Q1RP Phase reversal detection circuit R1T Thermistor fin A2P R1T Thermistor air A1P R2T Thermistor suction R4T Thermistor coil deicer R5T Thermistor coil outlet R6T Thermistor liquid pipe receiver R7T Thermistor accumulator R10 Resistor current sensor A4P A8P R31T R33T Thermistor disc...

Page 51: ...T Leaving water thermistor circuit 1 R12T Returning water thermistor circuit 1 R13T Refrigerant liquid thermistor circuit 1 R14T Refrigerant gas thermistor circuit 1 R21T Leaving water thermistor circuit 2 R22T Returning water thermistor circuit 2 R23T Refrigerant liquid thermistor circuit 2 R24T Refrigerant gas thermistor circuit 2 S1L Flow switch circuit 1 S2L Flow switch circuit 2 S1S Thermosta...

Page 52: ...ue 70 01 Not applicable Do not change the default value 10 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 1 6 Option setup 01 Optional room thermostat installed 0 0 2 7 Option setup 00 Forced pump operation 1 ON 0 1 8 Option setup 00 User interface temperature control 0 OFF 0 1 01 Not applicable Do not chan...

Page 53: ...icable Do not change the default value 40 E Service mode 00 Not applicable Do not change the default value 0 01 Not applicable Do not change the default value 0 02 Not applicable Do not change the default value 0 03 Not applicable Do not change the default value 1 04 Pump only operation Air purge 0 0 25 1 F Settings are not applicable 00 Allowable overshoot value for return water 5 0 15 1 C 01 Not...

Page 54: ...mand setting via external control adapter NO YES 18 High static pressure setting OFF ON 22 Automatic night time low noise setting OFF Level 1 outdoor fan with step 6 or lower Level 2 outdoor fan with step 5 or lower Level 3 outdoor fan with step 4 or lower 25 Low noise setting via external control adapter Level 1 outdoor fan with step 6 or lower Level 2 outdoor fan with step 5 or lower Level 3 out...

Page 55: ...d any quality deterioration do not use the unit for cooling precision instruments or works of art NOTICE For future modifications or expansions of your system A full overview of allowable combinations for future system extensions is available in technical engineering data and should be consulted Contact your installer to receive more information and professional advice 13 1 System layout RC RT1 M1...

Page 56: ...nal electronic parts WARNING This unit contains electrical and hot parts WARNING Before operating the unit be sure the installation has been carried out correctly by an installer NOTICE Never inspect or service the unit by yourself Ask a qualified service person to perform this work WARNING Never use a flammable spray such as hair spray lacquer or paint near the unit It may cause a fire WARNING Ne...

Page 57: ...not place the user interface in a place exposed to direct sunlight The LCD display may get discoloured or fail to display the data NOTICE Do not place items which might be damaged by moisture under the indoor unit Condensation may form if the humidity is above 80 if the drain outlet is blocked or the filter is polluted NOTICE Arrange the drain hose to ensure smooth drainage Incomplete drainage may...

Page 58: ... the system 16 3 1 About the clock INFORMATION The clock must be set manually Adjust the setting when switching from summertime to wintertime and vice versa The clock cannot be adjusted if the controller is set to permission level 2 or 3 see field setting 0 00 in 7 2 9 Field settings on the user interface on page 35 A power failure of more than 2 hours will reset the clock and the day of the week ...

Page 59: ... is then operated in the leaving water control mode and is not functioning as a room thermostat The remote controller ON OFF status always has priority over the external room thermostat INFORMATION Setback operation and weather dependent setpoint are not available in the cooling mode 16 3 4 Space heating operation Space heating is available for heat pump units only Space heating can be controlled ...

Page 60: ...fferent levels of quiet mode operation The desired quiet mode is set through a field setting 1 Press to activate quiet mode operation Result appears on the display If the controller is set to permission level 2 or 3 see 7 2 Making field settings on page 31 the button cannot be used 2 Press again to deactivate quiet mode operation Result disappears from the display The actual temperatures can be di...

Page 61: ... C 1 OFF ON ON 6 30 0 30 B t 6 30 9 00 16 00 23 00 19 C 19 C 22 C 21 C 42 C 42 C 45 C 44 C 19 C 19 C 22 C 21 C 42 C 42 C 45 C 44 C 3 OFF ON ON 18 C 40 C 40 C 18 C 1 Schedule timer 2 Setback function 3 Both setback function and schedule timer are enabled A Setback function B ON OFF instruction t Time T Temperature setpoint Room temperature Leaving water temperature Space heating based on temperatur...

Page 62: ...linking 4 Consult the action s using and 5 Hold down for 5 seconds to program the detailed actions Result The first programmed action appears 6 Select the action number you would like to program or to modify using 7 Set the correct action time using and 8 Set the leaving water temperature using and 9 Set the room temperature using and 10 Select using to switch cooling and the remote controller off...

Page 63: ...sult If is pressed when action number 3 is displayed actions 1 2 and 3 are stored but action 4 is deleted You automatically return to step 6 Press several times to return to previous steps in this procedure and finally return to normal operation 15 You automatically return to step 6 start again to program the following day To program quiet mode INFORMATION Press to return to previous steps in the ...

Page 64: ...simultaneously for 5 seconds 6 After 5 seconds the display will show the next day e g if was selected first This indicates that the day has been copied 7 Press to return to step 2 To delete a mode 1 Press Result The actual mode is blinking 2 Select the mode you want to delete using and Result The selected mode is blinking 3 Press and simultaneously for 5 seconds to delete the selected mode To dele...

Page 65: ...ible Contact your dealer for more information When asking your dealer for an intervention always state The complete model name of the unit The manufacturing number stated on the nameplate of the unit The installation date The symptoms or malfunction and details of the defect 17 2 3 Recommended maintenance and inspection cycles Be aware that the mentioned maintenance and replacement cycles do not r...

Page 66: ...of the unit with manufacturing number if possible and the installation date possibly listed on the warranty card 18 1 Error codes Overview In case a malfunction code appears on the indoor unit user interface display contact your installer and inform the malfunction code the unit type and serial number you can find this information on the nameplate of the unit For your reference a list with malfunc...

Page 67: ... 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 Accessorie...

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