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Unit installation

Installer reference guide

4MWXM-A9

R32 Split series

4P708645-1 – 2022.09

If the outdoor unit is exposed to direct sea winds, install a windbreaker.

▪

Height of windbreaker≥1.5×height of outdoor unit

▪

Mind the service space requirements when installing the windbreaker.

Sea wind

Building

Outdoor unit

Windbreaker

The outdoor unit is designed for outdoor installation only, and for ambient
temperatures within the following ranges (unless otherwise specified in the
operation manual of the connected indoor unit):

DX operation range

Cooling mode

Heating mode

–10~46°C DB

–15~24°C DB

DHW operation range

–15~42°C DB

6.1.2 Additional installation site requirements of the outdoor unit in cold climates

Protect the outdoor unit against direct snowfall and take care that the outdoor unit
is NEVER snowed up.

Содержание Multi+ R32 Split Series

Страница 1: ...Installer reference guide R32 Split series 4MWXM52A2V1B9...

Страница 2: ...tall the outdoor unit 29 6 3 5 To provide drainage 29 6 3 6 To prevent the outdoor unit from falling over 30 7 Piping installation 32 7 1 Preparing refrigerant piping 32 7 1 1 Refrigerant piping requi...

Страница 3: ...59 12 4 Checklist during commissioning 59 12 5 Trial operation and testing 59 12 5 1 About wiring error check 60 12 5 2 To perform a test run 61 12 6 Starting up the outdoor unit 62 13 Hand over to th...

Страница 4: ...connecting the refrigerant piping to the indoor unit connecting the electrical wiring to the indoor unit see the installation manual of the indoor unit Documentation set This document is part of a doc...

Страница 5: ...serious injury WARNING FLAMMABLE MATERIAL CAUTION Indicates a situation that could result in minor or moderate injury NOTICE Indicates a situation that could result in equipment or property damage INF...

Страница 6: ...the documentation Installer reference guide 6 4MWXM A9 R32 Split series 4P708645 1 2022 09 Symbol Explanation Indicates a table title or a reference to it Example 1 3 Table title means Table 3 in cha...

Страница 7: ...plied materials comply with applicable legislation on top of the instructions described in the Daikin documentation WARNING Tear apart and throw away plastic packaging bags so that nobody especially c...

Страница 8: ...s where there is a risk of fire due to the leakage of flammable gases example thinner or gasoline carbon fibre ignitable dust In places where corrosive gas example sulphurous acid gas is produced Corr...

Страница 9: ...rigerating systems such as to minimise the likelihood of hydraulic shock damaging the system Mount the indoor equipment and pipes securely and protect them to avoid accidental rupture of equipment or...

Страница 10: ...ling mounted unit a 4 6 13 4 4 6 180 4 8 14 6 4 8 196 5 0 15 8 5 0 213 1 842 5 2 17 1 1 842 5 2 230 1 843 3 64 5 4 18 5 1 843 28 9 5 4 248 2 0 3 95 5 6 19 9 2 0 34 0 5 6 267 2 2 4 34 5 8 21 3 2 2 41 2...

Страница 11: ...sufficient precautions in case of refrigerant leakage If refrigerant gas leaks ventilate the area immediately Possible risks Excessive refrigerant concentrations in a closed room can lead to oxygen d...

Страница 12: ...n liquid form Adding it in gas form may prevent normal operation CAUTION When the refrigerant charging procedure is done or when pausing close the valve of the refrigerant tank immediately If the valv...

Страница 13: ...r finishing the electrical work confirm that each electrical component and terminal inside the electrical components box is connected securely Make sure all covers are closed before starting up the un...

Страница 14: ...es a distance of 1 meter may NOT be sufficient NOTICE ONLY applicable if the power supply is three phase and the compressor has an ON OFF starting method If there exists the possibility of reversed ph...

Страница 15: ...the applicable standard Installation site see 6 1 Preparing the installation site 423 CAUTION Check if the installation location can support the unit s weight Poor installation is hazardous It can al...

Страница 16: ...non permanent type CAUTION Do NOT connect the embedded branch piping and the outdoor unit when only carrying out piping work without connecting the indoor unit in order to add another indoor unit late...

Страница 17: ...nstallation 448 WARNING All wiring MUST be performed by an authorised electrician and MUST comply with the applicable national wiring regulation Make electrical connections to the fixed wiring All com...

Страница 18: ...ill be very hot DANGER RISK OF ELECTROCUTION All electrical parts including thermistors are powered by the power supply Do NOT touch them with bare hands DANGER RISK OF ELECTROCUTION Disconnect the po...

Страница 19: ...o NOT use the brazing torch Use approved refrigerants and lubricants only DANGER RISK OF BURNING SCALDING Do NOT touch the compressor with bare hands Troubleshooting see 15 Troubleshooting 466 WARNING...

Страница 20: ...cked unit as close as possible to its final installation position to prevent damage during transport Prepare in advance the path along which you want to bring the unit to its final installation positi...

Страница 21: ...ies from the outdoor unit 1 Lift the outdoor unit 2 Remove the accessories from the bottom of the package 3 Make sure you have all following accessories delivered with the unit 1 1 2 1 6 1 a 1 b c d e...

Страница 22: ...tioning indoor unit or the DHW tank see the combination table For details contact your dealer WARNING MILDLY FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable INFORMATION For the...

Страница 23: ...he site Do NOT install the unit in places often used as work place In case of construction works e g grinding works where a lot of dust is created the unit MUST be covered CAUTION Check if the install...

Страница 24: ...d the following requirements 2 General safety precautions 47 7 1 3 Refrigerant piping length and height difference 433 Mind the following spacing guidelines 100 50 350 mm b a 100 50 b a 100 b a b a 35...

Страница 25: ...und is measured under actual installation conditions the measured value might be higher than the sound pressure level mentioned in Sound spectrum in the data book due to environmental noise and sound...

Страница 26: ...lding c Outdoor unit d Windbreaker The outdoor unit is designed for outdoor installation only and for ambient temperatures within the following ranges unless otherwise specified in the operation manua...

Страница 27: ...n heavy snowfall areas it is very important to select an installation site where the snow will NOT affect the unit If lateral snowfall is possible make sure that the heat exchanger coil is NOT affecte...

Страница 28: ...g the installation site 423 6 3 2 Precautions when mounting the outdoor unit INFORMATION Also read the precautions and requirements in the following chapters 2 General safety precautions 47 6 1 Prepar...

Страница 29: ...ase to make sure that there is proper drainage in order to avoid ice accumulation Prepare a water drainage channel around the foundation to drain waste water away from the unit Avoid drain water flowi...

Страница 30: ...in socket 1 Install drain caps accessory f and accessory g Make sure the edges of the drain caps close off the holes completely 2 Install the drain socket a c b b b a a a Drain hole Install a drain ca...

Страница 31: ...6 Unit installation Installer reference guide 31 4MWXM A9 R32 Split series 4P708645 1 2022 09...

Страница 32: ...About checking the refrigerant piping 40 7 3 2 Precautions when checking the refrigerant piping 41 7 3 3 To check for leaks 41 7 3 4 To perform vacuum drying 41 7 1 Preparing refrigerant piping 7 1 1...

Страница 33: ...ulation thickness Pipe outer diameter p Insulation inner diameter i Insulation thickness t 6 4 mm 1 4 8 10 mm 10 mm 9 5 mm 3 8 12 15 mm 13 mm 12 7 mm 1 2 14 16 mm 13 mm i i t p p If the temperature is...

Страница 34: ...ting piping to indoor units shall be of non permanent type CAUTION Do NOT connect the embedded branch piping and the outdoor unit when only carrying out piping work without connecting the indoor unit...

Страница 35: ...g mineral oils and moisture from mixing into the system Install the piping so that the flare is NOT subjected to mechanical stress Do NOT leave pipes unattended at the site If the installation is NOT...

Страница 36: ...when connecting the piping This to prevent nut cracking and leaks a b c d a Torque wrench b Spanner c Piping union d Flare nut Piping size mm Tightening torque N m Flare dimensions A mm Flare shape m...

Страница 37: ...made a b c a Flare s inner surface MUST be flawless b The pipe end MUST be evenly flared in a perfect circle c Make sure the flare nut is fitted 7 2 6 Connections between outdoor and indoor unit using...

Страница 38: ...or the smaller pipe may be damaged about 2 3 1 the normal torque 7 2 7 Using the stop valve and service port CAUTION Do NOT open the valves before flaring is complete This would cause refrigerant gas...

Страница 39: ...and turn the valve stem Counterclockwise to open Clockwise to close 3 When the stop valve CANNOT be turned any further stop turning 4 Install the stop valve cover Result The valve is now open closed...

Страница 40: ...rant piping between indoor and outdoor unit is installed in a ducting or the refrigerant piping is wrapped with finishing tape 7 3 Checking the refrigerant piping 7 3 1 About checking the refrigerant...

Страница 41: ...before performing the leak test or vacuum drying 7 3 3 To check for leaks NOTICE Do NOT exceed the unit s maximum working pressure see PS High on the unit name plate NOTICE ALWAYS use a recommended bu...

Страница 42: ...ncreases There is moisture in the system Go to the next step 3 Vacuum the system for at least 2 hours to a manifold pressure of 0 1 MPa 1 bar 4 After turning the pump OFF check the pressure for at lea...

Страница 43: ...le When relocating the system After a leak Charging additional refrigerant Before charging additional refrigerant make sure the outdoor unit s external refrigerant piping is checked leak test vacuum d...

Страница 44: ...nside the unit is mildly flammable but normally does NOT leak If the refrigerant leaks in the room and comes in contact with fire from a burner a heater or a cooker this may result in fire or the form...

Страница 45: ...gerant amount If the total liquid piping length is Then 30 m Do NOT add additional refrigerant 30 m R total length m of liquid piping 30 m 0 020 R Additional charge kg rounded in units of 0 1 kg INFOR...

Страница 46: ...p of a b Factory refrigerant charge see unit name plate c Additional refrigerant amount charged d Total refrigerant charge e Quantity of fluorinated greenhouse gases of the total refrigerant charge ex...

Страница 47: ...4MWXM A9 R32 Split series 4P708645 1 2022 09 In case a leak is detected recover the refrigerant and repair the joint s Then perform the leak tests see 7 3 3 To check for leaks 441 charge refrigerant c...

Страница 48: ...onnecting the electrical wiring to the indoor unit 4 Connecting the main power supply of the indoor unit 5 Connecting the main power supply of the gas boiler 6 Connecting the communication cable betwe...

Страница 49: ...tage range g S90 S92 S93 thermistor lead wire connector h S50 suspend lead wire connector i S60 pressure sensor connector j S70 fan motor lead wire connector k S80 4 way valve lead wire connector l W...

Страница 50: ...isconnection under overvoltage category III WARNING If the supply cord is damaged it MUST be replaced by the manufacturer its service agent or similarly qualified persons in order to avoid a hazard WA...

Страница 51: ...th the appropriate tool Use the following methods for installing wires Wire type Installation method Single core wire Or Stranded conductor wire twisted to solid like connection c b c a a A AA A a Cur...

Страница 52: ...armonised wire providing double insulation and suitable for applicable voltage 4 core cable Minimum 1 5 mm2 Recomended circuit breaker 20 A Earth leakage circuit breaker residual current circuit break...

Страница 53: ...DHW tank a Circuit breaker b Residual current device c Power supply wire d Interconnection wire for room A B C TO TANK 5 Tighten the terminal screws securely using a Phillips screwdriver 6 Check that...

Страница 54: ...cover before turning ON the power supply NOTICE It is recommended that the refrigerant piping between indoor and outdoor unit is installed in a ducting or the refrigerant piping is wrapped with finish...

Страница 55: ...ON heat mode lock 57 11 1 About standby electricity saving function INFORMATION This function is available only for the indoor units listed below The standby electricity saving function turns OFF the...

Страница 56: ...set operates at high power the other indoor units will run with reduced capabilities Quiet operation priority If the indoor unit on which the priority room function is set to quiet operation the outd...

Страница 57: ...5 SW6 2 OFF ON 2 1 2 Set the night quiet mode switch SW6 1 to ON 11 4 About heat mode lock Heat mode lock limits the unit to heat operation 11 4 1 To turn ON heat mode lock 1 Remove the switch cover...

Страница 58: ...check 60 12 5 2 To perform a test run 61 12 6 Starting up the outdoor unit 62 12 1 Overview Commissioning This chapter describes what you have to do and know to commission the system after it is inst...

Страница 59: ...led and the pipes are properly insulated The stop valves gas and liquid on the outdoor unit are fully open Drainage Make sure drainage flows smoothly Possible consequence Condensate water might drip T...

Страница 60: ...such as underground wiring This function CANNOT be used within 3 minutes after activating the safety breaker or when the outside air temperature is 5 C and if water temperature in DHW tank is 20 C To...

Страница 61: ...equisite Power supply MUST be in the specified range Prerequisite Test run operation may be done in cooling or heating mode Prerequisite Test run should be done in accordance with the operation manual...

Страница 62: ...09 INFORMATION Even if the unit is turned OFF it consumes electricity When the power turns back on after a power break the previously selected mode will be resumed 12 6 Starting up the outdoor unit Se...

Страница 63: ...ake sure that the user has the printed documentation and ask him her to keep it for future reference Inform the user that he can find the complete documentation at the URL mentioned earlier in this ma...

Страница 64: ...tenance at least once a year However applicable legislation might require shorter maintenance intervals NOTICE Applicable legislation on fluorinated greenhouse gases requires that the refrigerant char...

Страница 65: ...wing at least once a year Heat exchanger The heat exchanger of the outdoor unit can get blocked up due to dust dirt leaves etc It is recommended to clean the heat exchanger yearly A blocked heat excha...

Страница 66: ...ke sure that the unit is disconnected from the mains Turn off the respective circuit breaker When a safety device was activated stop the unit and find out why the safety device was activated before re...

Страница 67: ...4 Symptom Electrical leakage Possible causes Corrective action The unit is NOT earthed correctly Check and correct the connection of the earth wiring 15 3 5 Symptom Priority room setting does NOT fun...

Страница 68: ...temperature at inverter circuit heat sink Output over current b Refrigerant shortage b Low voltage to main circuit or over voltage to main circuit Reversing solenoid valve switching failure or high p...

Страница 69: ...15 Troubleshooting Installer reference guide 69 4MWXM A9 R32 Split series 4P708645 1 2022 09 a Diagnosis may not apply to some cases For more details refer to the service manual...

Страница 70: ...automatic pump down function with which you can collect all refrigerant from the system into the outdoor unit Possible consequence Self combustion and explosion of the compressor because of air going...

Страница 71: ...the power remove the service cover and the switch box cover and the service PCB switch cover 2 Set DIP switch SW5 and SW6 to OFF 3 Set DIP switch SW2 to COOL 2 1 1 1 OFF ON 4 3 2 1 2 1 4 3 2 1 HEAT CO...

Страница 72: ...and numbering refer to the wiring diagram on the unit Part numbering is by Arabic numbers in ascending order for each part and is represented in the overview below by in the part code Symbol Meaning S...

Страница 73: ...Pilot lamp light emitting diode HAP Light emitting diode service monitor green HIGH VOLTAGE High voltage IES Intelligent eye sensor IPM Intelligent power module K R KCR KFR KHuR K M Magnetic relay L L...

Страница 74: ...igh S PL Pressure switch low S T Thermostat S RH Humidity sensor S W SW Operation switch SA F1S Surge arrester SR WLU Signal receiver SS Selector switch SHEET METAL Terminal strip fixed plate T R Tran...

Страница 75: ...stor gas b Outdoor air temperature thermistor l Muffler v Room A B C and Domestic hot water tank W c Heat exchanger thermistor m Discharge pipe thermistor w Field piping liquid d Refnet header n Compr...

Страница 76: ...on 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 Instruct...

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