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Piping installation

Installer reference guide

41

R32 split series
4P751614-2 – 2023.09

f

Charging hoses

g

Vacuum pump

h

Valve caps

i

Service port

j

Gas stop valve

k

Liquid stop valve

1

Vacuum  the  system  until  the  pressure  on  the  manifold  indicates  −0.1  MPa
(−1 bar).

2

Leave as is for 4-5 minutes and check the pressure:

If the pressure…

Then…

Does not change

There is no moisture in the system.
This procedure is finished.

Increases

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 least 1 hour.

5

If you do NOT reach the target vacuum or CANNOT maintain the vacuum for
1 hour, do the following:

Check for leaks again.

Perform vacuum drying again.

NOTICE

Make  sure  to  open  the  stop  valves  after  installing  the  refrigerant  piping  and
performing  vacuum  drying.  Running  the  system  with  the  stop  valves  closed  may
break the compressor.

INFORMATION

After opening the stop valve, it is possible that the pressure in the refrigerant piping
does  NOT  increase.  This  might  be  caused  by  e.g.  the  closed  state  of  the  expansion
valve  in  the  outdoor  unit  circuit,  but  does  NOT  present  any  problem  for  correct
operation of the unit.

7.4 Charging refrigerant

7.4.1 About charging refrigerant

The  outdoor  unit  is  factory  charged  with  refrigerant,  but  in  some  cases  the
following might be necessary:

What

When

Charging additional refrigerant

When the total liquid piping length is
more than specified (see later).

Completely recharging refrigerant

Example: 

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 drying).

Summary of Contents for RXP20N5V1B9

Page 1: ...Installer reference guide R32 split series RXP20N5V1B9 RXP25N5V1B9 RXP35N5V1B9 ARXP20N5V1B9 ARXP25N5V1B9 ARXP35N5V1B9...

Page 2: ...ounting the outdoor unit 29 6 3 2 Precautions when mounting the outdoor unit 30 6 3 3 To provide the installation structure 30 6 3 4 To install the outdoor unit 30 6 3 5 To provide drainage 31 6 3 6 T...

Page 3: ...51 10 4 Checklist during commissioning 52 10 5 To perform a test run 52 10 6 Starting up the outdoor unit 53 11 Hand over to the user 54 12 Maintenance and service 55 12 1 Overview Maintenance and ser...

Page 4: ...r 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 documentation set The complete set consists of Ge...

Page 5: ...ack the units and remove their accessories About the unit System layout Operation range Preparation What to do and know before going on site Installation What to do and know to install the system Conf...

Page 6: ...ER Indicates a situation that results in death or serious injury DANGER RISK OF ELECTROCUTION Indicates a situation that could result in electrocution DANGER RISK OF BURNING SCALDING Indicates a situa...

Page 7: ...sure how to install or operate the unit contact your dealer DANGER RISK OF BURNING SCALDING Do NOT touch the refrigerant piping water piping or internal parts during and immediately after operation I...

Page 8: ...tion MUST be provided at an accessible place at the product Instructions for shutting down the system in case of an emergency Name and address of fire department police and hospital Name address and d...

Page 9: ...erating ignition sources example open flames an operating gas appliance or an operating electric heater in case the floor area is less than the minimum floor area A m no auxiliary devices which may be...

Page 10: ...Outdoor units installed or stored indoors e g winter garden garage machinery room NOTICE The pipework shall be securely mounted and guarded protected from physical damage Keep the pipework installati...

Page 11: ...2 0 4 83 5 6 29 7 2 2 5 31 5 8 31 8 2 4 5 79 6 0 34 0 2 6 6 39 6 2 36 4 2 8 7 41 6 4 38 7 3 0 8 51 6 6 41 2 3 2 9 68 6 8 43 7 3 4 10 9 7 0 46 3 3 6 12 3 7 2 49 0 3 8 13 7 7 4 51 8 4 0 15 1 7 6 54 6 4...

Page 12: ...gerant system is to be opened refrigerant MUST be treated according to the applicable legislation NOTICE Make sure refrigerant piping installation complies with applicable legislation In Europe EN378...

Page 13: ...K OF ELECTROCUTION Turn OFF all power supply before removing the switch box cover connecting electrical wiring or touching electrical parts Disconnect the power supply for more than 10 minutes and mea...

Page 14: ...nishing 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 unit C...

Page 15: ...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 phase...

Page 16: ...ing ignition sources example open flames an operating gas appliance or an operating electric heater Connecting the refrigerant piping see 7 2 Connecting the refrigerant piping 434 CAUTION No brazing o...

Page 17: ...igerant inside 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...

Page 18: ...al shocks or fire Do NOT install a phase advancing capacitor because this unit is equipped with an inverter A phase advancing capacitor will reduce performance and may cause accidents WARNING ALWAYS u...

Page 19: ...LDING CAUTION Do NOT perform the test operation while working on the indoor units When performing the test operation NOT ONLY the outdoor unit but the connected indoor unit will operate as well Workin...

Page 20: ...supplied through an external switching device such as a timer or connected to a circuit that is regularly turned ON and OFF by the utility DANGER RISK OF ELECTROCUTION When the unit is NOT operating...

Page 21: ...ing Fragile handle the unit with care Keep the unit upright in order to avoid damage 4 1 Overview About the box This chapter describes what you have to do after the box with the outdoor unit is delive...

Page 22: ...the outdoor unit 1 2 WARNING Make sure installation servicing maintenance and repair comply with instructions from Daikin and with applicable legislation for example national gas regulation and are e...

Page 23: ...outdoor unit as follows 2 Remove the accessories at the bottom of the package b e c d 1 a 1 1 1 1 a General safety precautions b Outdoor unit installation manual c Fluorinated greenhouse gases label...

Page 24: ...ns 5 1 Overview About the units and options This chapter contains information about Identification of the outdoor unit 5 2 Identification NOTICE When installing or servicing several units at the same...

Page 25: ...eck if the installation location can support the unit s weight Poor installation is hazardous It can also cause vibrations or unusual operating noise Provide sufficient service space Do NOT install th...

Page 26: ...he following spacing guidelines 1200 150 150 50 300 300 mm mm a b b a a Air outlet b Air inlet NOTICE Do NOT stack the units on each other Do NOT hang the unit on a ceiling Strong winds 18 km h blowin...

Page 27: ...ist spray or vapour may be present in the atmosphere Plastic parts may deteriorate and fall off or cause water leakage It is NOT recommended to install the unit in the following places because it may...

Page 28: ...vailing wind direction d Air outlet In any case provide at least 300 mm of free space below the unit Additionally make sure the unit is positioned at least 100 mm above the maximum expected level of s...

Page 29: ...To open the outdoor unit DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING 1 2 1 2 6 3 Mounting the outdoor unit 6 3 1 About mounting the outdoor unit When The outdoor and indoor unit must...

Page 30: ...ation 6 3 3 To provide the installation structure Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise Fix the unit securely by mean...

Page 31: ...ting into the unit and to avoid drain water dripping see the following figure NOTICE If the unit is installed in a cold climate take adequate measures so that the evacuated condensate CANNOT freeze NO...

Page 32: ...eference guide 32 R32 split series 4P751614 2 2023 09 3 Insert a rubber sheet between the cables and the outdoor unit to prevent the cables from scratching the paint field supply 4 Attach the ends of...

Page 33: ...To perform vacuum drying 40 7 4 Charging refrigerant 41 7 4 1 About charging refrigerant 41 7 4 2 About the refrigerant 42 7 4 3 Precautions when charging refrigerant 43 7 4 4 To determine the additi...

Page 34: ...rature 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 7 2 Connect...

Page 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...

Page 36: ...Piping size mm Tightening torque N m Flare dimensions A mm Flare shape mm 6 4 15 17 8 7 9 1 R 0 4 0 8 2 45 90 2 A 9 5 33 39 12 8 13 2 7 2 4 Pipe bending guidelines Use a pipe bender for bending All pi...

Page 37: ...nd service port CAUTION Do NOT open the valves before flaring is complete This would cause refrigerant gas leakage To handle the stop valve Take the following guidelines into account The stop valves a...

Page 38: ...T be turned any further stop turning 4 Install the stop valve cover Result The valve is now open closed To handle the stem cap The stem cap is sealed where indicated with the arrow Do NOT damage it Af...

Page 39: ...ecking the refrigerant piping Make sure the refrigerant piping is connected between the outdoor unit and the indoor unit Typical workflow Checking the refrigerant piping typically consists of the foll...

Page 40: ...kPa 2 bar It is recommended to pressurize to 3000 kPa 30 bar in order to detect small leaks 2 Check for leaks by applying the bubble test solution to all connections NOTICE ALWAYS use a recommended bu...

Page 41: ...CE Make sure to open the stop valves after installing the refrigerant piping and performing vacuum drying Running the system with the stop valves closed may break the compressor INFORMATION After open...

Page 42: ...nal refrigerant piping is checked leak test vacuum drying 3 Vacuum drying on the outdoor unit s internal refrigerant piping is performed NOTICE Before completely recharging perform vacuum drying on th...

Page 43: ...s to accelerate the defrosting process other than those recommended by the manufacturer Be aware that the refrigerant inside the system is odourless NOTICE Applicable legislation on fluorinated greenh...

Page 44: ...down 459 for more details 7 4 7 To fix the fluorinated greenhouse gases label 1 Fill in the label as follows b Contains fluorinated greenhouse gases 2 1 1 1 2 2 kg tCO2 eq GWP kg 1000 kg kg GWP XXX R...

Page 45: ...or wrong N phase equipment might break down Establish proper earthing Do NOT earth the unit to a utility pipe surge absorber or telephone earth Incomplete earthing may cause electrical shocks Install...

Page 46: ...ician and MUST comply with the national wiring regulation Make electrical connections to the fixed wiring All components procured on site and all electrical construction MUST comply with the applicabl...

Page 47: ...ductor wire for installation Method 1 Twisting conductor 1 Strip insulation 20 mm from the wires 2 Slightly twist the end of the conductor to create a solid like connection Method 2 Using round crimp...

Page 48: ...tions of standard wiring components Component Power supply cable Voltage 220 240 V Phase 1 Frequency 50 Hz Wire sizes MUST comply with applicable legislation Interconnection cable indoor outdoor 4 cor...

Page 49: ...terconnection cable and power supply as follows f 50 Hz 220 240 V a b c d e a Interconnection cable b Power supply cable c Circuit breaker field provided fuse with 16 A rating d Residual current devic...

Page 50: ...it is installed in a ducting or the refrigerant piping is wrapped with finishing tape 1 Insulate and fix the refrigerant piping and cables as follows g b a f e c d a Gas pipe b Gas pipe insulation c I...

Page 51: ...nnected indoor unit will operate as well Working on an indoor unit while performing a test operation is dangerous CAUTION Do NOT insert fingers rods or other objects into the air inlet or outlet Do NO...

Page 52: ...ows smoothly Possible consequence Condensate water might drip The indoor unit receives the signals of the user interface The specified wires are used for the interconnection cable The fuses circuit br...

Page 53: ...NFORMATION 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 10 6 Starting up the outdoor unit See th...

Page 54: ...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 manual...

Page 55: ...ety precautions The yearly maintenance of the outdoor unit 12 2 Maintenance safety precautions DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING WARNING Before carrying out any maintenance...

Page 56: ...751614 2 2023 09 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 exchanger can...

Page 57: ...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 resetting it NEVER shunt s...

Page 58: ...on Incomplete thermal insulation gas and liquid piping indoor portions of the drain hose extension Make sure the thermal insulation of the piping and the drain hose is complete Improperly connected dr...

Page 59: ...ycling and recovery By ensuring this product is disposed of correctly you will help to prevent potential negative consequences for the environment and human health For more information contact your in...

Page 60: ...he liquid stop valve with a hexagonal wrench 4 Check on the manifold if the vacuum is reached 5 After 2 3 minutes close the gas stop valve and stop forced cooling c b e d d a a Gas stop valve b Closin...

Page 61: ...it series 4P751614 2 2023 09 15 Technical data A subset of the latest technical data is available on the regional Daikin website publicly accessible The full set of latest technical data is available...

Page 62: ...OT 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 LIVE...

Page 63: ...xplaining 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...

Page 64: ...TANBUL T RK YE Tel 0216 453 27 00 Faks 0216 671 06 00 a r Merkezi 444 999 0 Web www daikin com tr G lsuyu Mahallesi Fevzi akmak Caddesi Bur ak Sokak No 20 34848 Maltepe 4P751614 2 2023 09 Copyright 20...

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