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Piping installation

Installer reference guide

3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1C – 2020.08

7 Piping installation

In this chapter

Preparing refrigerant piping ...................................................................................................................................................

7.1.1

Refrigerant piping requirements ...........................................................................................................................

7.1.2

Refrigerant piping insulation..................................................................................................................................

7.1.3

Refrigerant piping length and height difference ...................................................................................................

7.2

Connecting the refrigerant piping..........................................................................................................................................

7.2.1

About connecting the refrigerant piping...............................................................................................................

7.2.2

Precautions when connecting the refrigerant piping............................................................................................

7.2.3

Guidelines when connecting the refrigerant piping..............................................................................................

7.2.4

Pipe bending guidelines .........................................................................................................................................

7.2.5

To flare the pipe end..............................................................................................................................................

7.2.6

Connections between outdoor and indoor unit using reducers...........................................................................

7.2.7

Using the stop valve and service port....................................................................................................................

7.2.8

To connect the refrigerant piping to the outdoor unit .........................................................................................

7.3

Checking the refrigerant piping..............................................................................................................................................

7.3.1

About checking the refrigerant piping...................................................................................................................

7.3.2

Precautions when checking the refrigerant piping ...............................................................................................

7.3.3

To check for leaks...................................................................................................................................................

7.3.4

To perform vacuum drying ....................................................................................................................................

7.1 Preparing refrigerant piping

7.1.1 Refrigerant piping requirements

INFORMATION

Also read the precautions and requirements in the

"2 General safety

precautions"

[

5].

▪

Piping material:

Phosphoric acid deoxidised seamless copper.

▪

Piping diameter:

2MXM68

Liquid piping

2× Ø6.4 mm (1/4")

Gas piping

1× Ø9.5 mm (3/8")

1× Ø12.7 mm (1/2")

3MXM40, 3MXM52, 3MXM68, 3AMXM52, 3MXF52, 3AMXF52, 3MXF68

Liquid piping

3× Ø6.4 mm (1/4")

Gas piping

1× Ø9.5 mm (3/8")

2× Ø12.7 mm (1/2")

4MXM68

Liquid piping

4× Ø6.4 mm (1/4")

Gas piping

2× Ø9.5 mm (3/8")

2× Ø12.7 mm (1/2")

4MXM80

Liquid piping

4× Ø6.4 mm (1/4")

Содержание 3MXM40N2V1B8

Страница 1: ...ler reference guide R32 Split series 2MXM68N2V1B 3MXM40N2V1B9 3MXM40N2V1B8 3MXM52N2V1B9 3MXM52N2V1B8 3MXM68N2V1B9 3AMXM52N2V1B9 4MXM68N2V1B9 4MXM80N2V1B9 5MXM90N2V1B9 3AMXF52A2V1B9 3MXF52A2V1B9 3MXF68...

Страница 2: ...6 3 1 About mounting 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 31 6 3 5 To provide drain...

Страница 3: ...ioning 62 12 1 Overview Commissioning 62 12 2 Precautions when commissioning 62 12 3 Checklist before commissioning 62 12 4 Checklist during commissioning 63 12 5 Trial operation and testing 63 12 5 1...

Страница 4: ...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 documentation set...

Страница 5: ...aning of warnings and symbols DANGER 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...

Страница 6: ...act your dealer DANGER RISK OF BURNING SCALDING Do NOT touch the refrigerant piping water piping or internal parts during and immediately after operation It could be too hot or too cold Give it time t...

Страница 7: ...rgency Name and address of fire department police and hospital Name address and day and night telephone numbers for obtaining service In Europe EN378 provides the necessary guidance for this logbook 2...

Страница 8: ...ectric heater in case the floor area is less than the minimum floor area A m no auxiliary devices which may be a potential ignition source are installed in the duct work example hot surfaces with a te...

Страница 9: ...lled or stored indoors e g winter garden garage machinery room Pipework in unventilated spaces NOTICE Pipework shall be protected from physical damage Installation of pipework shall be kept to a minim...

Страница 10: ...0 34 0 5 6 267 2 2 4 34 5 8 21 3 2 2 41 2 5 8 286 2 4 4 74 6 0 22 8 2 4 49 0 6 0 306 2 6 5 13 6 2 24 3 2 6 57 5 6 2 327 2 8 5 53 6 4 25 9 2 8 66 7 6 4 349 3 0 5 92 6 6 27 6 3 0 76 6 6 6 371 3 2 6 48...

Страница 11: ...oncentrations in a closed room can lead to oxygen deficiency Toxic gas might be produced if refrigerant gas comes into contact with fire DANGER RISK OF EXPLOSION Pump down Refrigerant leakage If you w...

Страница 12: ...g into the system Charge the liquid refrigerant as follows If Then A siphon tube is present i e the cylinder is marked with Liquid filling siphon attached Charge with the cylinder upright A siphon tub...

Страница 13: ...directive 98 83 EC 2 2 6 Electrical DANGER RISK OF ELECTROCUTION Turn OFF all power supply before removing the switch box cover connecting electrical wiring or touching electrical parts Disconnect the...

Страница 14: ...the earth leakage protector CAUTION When connecting the power supply connect the earth cable first before making the current carrying connections When disconnecting the power supply disconnect the cu...

Страница 15: ...x is connected securely Make sure all covers are closed before starting up the unit NOTICE Only applicable if the power supply is three phase and the compressor has an ON OFF starting method If there...

Страница 16: ...continuously operating ignition sources example open flames an operating gas appliance or an operating electric heater Opening the unit see 6 2 Opening the unit 429 DANGER RISK OF ELECTROCUTION Do NO...

Страница 17: ...igerant piping is NOT connected and the stop valve is open when the compressor is run air will be sucked in This will cause abnormal pressure in the refrigeration cycle which may result in equipment d...

Страница 18: ...Establish proper earthing Do NOT earth the unit to a utility pipe surge absorber or telephone earth Incomplete earthing may cause electrical shock Install the required fuses or circuit breakers Secur...

Страница 19: ...voltage MUST be less than 50 V DC before you can touch electrical components For the location of the terminals see the wiring diagram Finishing the outdoor unit installation see 10 Finishing the outd...

Страница 20: ...ING WARNING When carrying out an inspection on the switch box of the unit ALWAYS make sure that the unit is disconnected from the mains Turn off the respective circuit breaker When a safety device was...

Страница 21: ...door and indoor unit are delivered on site Keep the following in mind At delivery the unit MUST be checked for damage Any damage MUST be reported immediately to the claims agent of the carrier Bring t...

Страница 22: ...MXM 5MXM R32 Split series 4P600463 1C 2020 08 1 2 4 2 2 To remove the accessories from the outdoor unit 1 Lift the outdoor unit CAUTION Only handle the outdoor unit as follows 2 Remove the accessories...

Страница 23: ...a Outdoor unit installation manual b General safety precautions c Fluorinated greenhouse gases label d Multilingual fluorinated greenhouse gases label e Drain socket f Screw bag The screws will be use...

Страница 24: ...e considered as 1 room connection For the correct combination see the combination table and the installation manual of the Hybrid for Multi or the DHW generator for Multi WARNING MILDLY FLAMMABLE MATE...

Страница 25: ...s work place In case of construction works e g grinding works where a lot of dust is created the unit MUST be covered Choose an installation location with sufficient space for carrying the unit in and...

Страница 26: ...00 mm of work space below the ceiling surface and 250 mm for piping and electrical servicing 250 300 mm NOTICE Do NOT stack the units on each other Do NOT hang the unit on a ceiling Strong winds 18 km...

Страница 27: ...e a mineral oil mist 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 place...

Страница 28: ...that the outdoor unit is NEVER snowed up a b c c d a Snow cover or shed b Pedestal c Prevailing wind direction d Air outlet It is recommended to provide at least 150 mm of free space below the unit 30...

Страница 29: ...n the service cover is removed 6 2 2 To open the outdoor unit DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING 3 2 1 6 3 Mounting the outdoor unit 6 3 1 About mounting the outdoor unit Whe...

Страница 30: ...he strength and level of the installation ground so that the unit will not cause any operating vibration or noise Use a vibration proof rubber field supply in cases where vibrations may be transmitted...

Страница 31: ...path so that it does NOT become slippery in case of ambient freezing temperatures If you install the unit on a frame install a waterproof plate within 150 mm of the bottom side of the unit in order to...

Страница 32: ...Install a drain cap large b Drain hole Install a drain cap small c Drain hole for drain socket 6 3 6 To prevent the outdoor unit from falling over In case the unit is installed in places where strong...

Страница 33: ...reducers 39 7 2 7 Using the stop valve and service port 42 7 2 8 To connect the refrigerant piping to the outdoor unit 43 7 3 Checking the refrigerant piping 44 7 3 1 About checking the refrigerant pi...

Страница 34: ...based on the indoor unit See 7 2 6 Connections between outdoor and indoor unit using reducers 439 for more information 7 1 2 Refrigerant piping insulation Use polyethylene foam as insulation material...

Страница 35: ...nimum required space 2MXM68 3MXM40 3MXM52 3AMXM52 3MXF52 3AMXF52 4 7 m2 3MXM68 3MXF68 5 5 m2 4MXM68 6 5 m2 4MXM80 9 8 m2 5MXM90 10 4 m2 Shortest allowable length per room is 3 m Outdoor unit Refrigera...

Страница 36: ...he indoor unit in order to add another indoor unit later WARNING Only use R32 as refrigerant Other substances may cause explosions and accidents R32 contains fluorinated greenhouse gases Its global wa...

Страница 37: ...refrigerant cycle e g air Only use R32 when adding refrigerant Only use installation tools e g manifold gauge set that are exclusively used for R32 installations to withstand the pressure and to preve...

Страница 38: ...refrigerant piping Take the following guidelines into account when connecting pipes Coat the flare inner surface with ether oil or ester oil when connecting a flare nut Tighten 3 or 4 turns by hand b...

Страница 39: ...he pipe 4 Flare the pipe Set exactly at the position as shown in the following figure A Flare tool for R32 clutch type Conventional flare tool Clutch type Ridgid type Wing nut type Imperial type A 0 0...

Страница 40: ...15 20 25 35 42 a 2 4 42 50 60 3MXM40 A 9 5 mm 15 20 25 35 B C 12 7mm 15 20 25 35 2 4 3MXM52 3AMXM52 A 9 5 mm 15 20 25 35 42 a B C 12 7mm 15 20 25 35 2 4 42 50 3MXM68 A 9 5 mm 15 20 25 35 42 a B C 12 7...

Страница 41: ...mm 5 15 9 mm 9 5 mm 6 15 9 mm 9 5 mm Connection examples Connecting a 12 7 mm pipe to a 15 9 mm gas pipe connection port a b d e c a Outdoor unit connection port b Reducer no 1 c Reducer no 3 d Flare...

Страница 42: ...stop valves are factory closed The following figure shows the stop valve parts required when handling the valve c d a b a Service port and service port cap b Valve stem c Field piping connection d St...

Страница 43: ...r handling the stop valve tighten the stem cap and check for refrigerant leaks Piping mm Width across flats mm Tightening torque N m 6 4 17 15 17 9 5 19 18 20 12 7 22 22 27 15 9 27 48 59 To handle the...

Страница 44: ...ant piping is connected between the outdoor unit and the indoor unit Typical workflow Checking the refrigerant piping typically consists of the following stages 1 Checking for leaks in the refrigerant...

Страница 45: ...ents such as flare nuts or stop valve caps Soap water may contain salt which absorbs moisture that will freeze when the piping gets cold Soap water contains ammonia which may lead to corrosion of flar...

Страница 46: ...he 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 N...

Страница 47: ...nt Before charging additional refrigerant make sure the outdoor unit s external refrigerant piping is checked leak test vacuum drying INFORMATION Depending on the units and or the installation conditi...

Страница 48: ...NING MILDLY FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable WARNING The appliance shall be stored in a room without continuously operating ignition sources example open flames...

Страница 49: ...0 020 R Additional charge kg rounded in units of 0 1 kg INFORMATION Piping length is the one way length of liquid piping INFORMATION Additional refrigerant charge is NOT allowed in case of combination...

Страница 50: ...he 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 RXXX a f c d e a If a multilingual fluorin...

Страница 51: ...electrical wiring to the outdoor unit 3 Connecting 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...

Страница 52: ...a star system They can cause overheating electrical shock or fire Do NOT install a phase advancing capacitor because this unit is equipped with an inverter A phase advancing capacitor will reduce per...

Страница 53: ...lead wire connector room A B C D E c S40 thermal overload relay lead wire and high pressure switch connector d Multimeter DC voltage range e S90 93 thermistor lead wire connector f S70 fan motor lead...

Страница 54: ...e terminal must be longer than the other wires 1 3 9 1 3 Specifications of standard wiring components Component Power supply cable Voltage 220 240 V Phase 1 Frequency 50 Hz Wire type A Interconnection...

Страница 55: ...ip wire end to this point b An excessive strip length may cause electrical shock or leakage 3 Connect the wires between the indoor and outdoor units so that the terminal numbers match Make sure to mat...

Страница 56: ...ce guide 56 2MXM68 3 A MXM 3 A MXF 4MXM 5MXM R32 Split series 4P600463 1C 2020 08 9 Make sure the electrical wiring does not contact with the gas piping L N 1 2 3 1 2 3 2 a a Wire retainer 10 Reattach...

Страница 57: ...ly 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 finishing tape 1 Insulate and fix the refrig...

Страница 58: ...cool mode lock 60 11 1 About standby electricity saving function The standby electricity saving function turns OFF the power supply to the outdoor unit and turns ON the standby electricity saving mode...

Страница 59: ...m function is 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 opera...

Страница 60: ...h cover on the service PCB 2 Set the heat mode lock switch SW5 1 to ON 4 3 2 1 4 3 2 1 A 1 2 3 4 5 SW5 2 OFF ON 1 1 11 5 About cool mode lock Cool mode lock limits the unit to cool operation Forced op...

Страница 61: ...11 Configuration Installer reference guide 61 2MXM68 3 A MXM 3 A MXF 4MXM 5MXM R32 Split series 4P600463 1C 2020 08 4 VHR 5N SVH 21T 1 S15 1 3 5...

Страница 62: ...r the system 12 2 Precautions when commissioning 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 ca...

Страница 63: ...e fuses circuit breakers or locally installed protection devices are installed according to this document and have NOT been bypassed Check if marks room A E on the wiring and piping match for each ind...

Страница 64: ...cover A 1 2 3 4 5 SW3 2 1 1 2 Press the wiring error check switch SW3 on the outdoor unit service PCB Result The service monitor LEDs indicate whether correction is possible or not For details about h...

Страница 65: ...multaneous operation of all indoor units Check both heating and cooling operation 4 When test run is finished set the temperature to a normal level In cooling mode 26 28 C in heating mode 20 24 C INFO...

Страница 66: ...rly please make sure the following is clear for the user Make 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 comp...

Страница 67: ...t Maintenance safety precautions The yearly maintenance of the outdoor unit 14 2 Maintenance safety precautions DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING NOTICE Risk of electrostati...

Страница 68: ...se performance 14 4 About the compressor When servicing the compressor keep in mind following precautions DANGER RISK OF ELECTROCUTION Use this compressor on a grounded system only Turn the power off...

Страница 69: ...ains 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 safety devices or change...

Страница 70: ...of the piping and the drain hose is complete Improperly connected drainage Secure the drainage 15 3 4 Symptom Electrical leakage Possible causes Corrective action The unit is NOT earthed correctly Ch...

Страница 71: ...tor worked or freeze up in operating unit or stand by unit Overload relay worked or high discharge pipe temperature b Faulty compressor start Input over current Thermistor or CT abnormality b High tem...

Страница 72: ...series 4P600463 1C 2020 08 Green LED A Diagnosis Turn the power OFF and back ON and check the LED within approximately 3 minutes If the LED is ON again the outdoor unit PCB is faulty Power supply fau...

Страница 73: ...ct the environment pump down when relocating the unit or when disposing of the unit DANGER RISK OF EXPLOSION Pump down Refrigerant leakage If you want to pump down the system and there is a leak in th...

Страница 74: ...e b Closing direction c Hexagonal wrench d Valve cap e Liquid stop valve 16 3 To start and stop forced cooling 1 Turn OFF the power 2 Remove the service cover and the switch box cover 3 Remove the ser...

Страница 75: ...series 4P600463 1C 2020 08 A 1 2 3 4 5 7 SW1 6 1 4 5 NOTICE Take care that while running forced cooling operation the water temperature remains higher than 5 C see temperature read out of the indoor...

Страница 76: ...e 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 Symbol Meaning Circuit breaker Protective earth...

Страница 77: ...e 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 L Coil L R Reactor M Stepp...

Страница 78: ...nsor S W SW Operation switch SA F1S Surge arrester SR WLU Signal receiver SS Selector switch SHEET METAL Terminal strip fixed plate T R Transformer TC TRC Transmitter V R V Varistor V R Diode bridge I...

Страница 79: ...SV 9 5CuT 9 5CuT 6 4CuT Solenoid valve 12 7CuT 15 9CuT d e f k a b c g i d r A r B s s t t u u d p o o n l l m l w x v A v B v A v B q h 2MXM68 a Heat exchanger k 4 way valve u Thermistor gas b Outdoo...

Страница 80: ...7CuT 12 7CuT 12 7CuT 12 7CuT 15 9CuT 15 9CuT 15 9CuT 7 9CuT 9 5CuT 12 7CuT 7 9CuT 7 9CuT 7 9CuT MV MV MV A B C 6 4CuT 6 4CuT 6 4CuT 6 4CuT 6 4CuT 6 4CuT 9 5CuT 9 5CuT 9 5CuT 9 5CuT 7 9CuT S1PH d e f k...

Страница 81: ...CuT 9 5CuT 12 7CuT 7 9CuT 7 9CuT 7 9CuT MV MV MV A B C 6 4CuT 6 4CuT 6 4CuT 9 5CuT 9 5CuT 9 5CuT 9 5CuT S1PH SV 9 5CuT 9 5CuT 6 4CuT 12 7CuT 7 9CuT MVD 6 4CuT 15 9CuT 12 7CuT 7 9CuT 7 9CuT 7 9CuT 7 9C...

Страница 82: ...9CuT 12 7CuT 15 9CuT 9 5CuT 9 5CuT 9 5CuT d e f k a a b c g i j d r A r B r C r D r E s t s t s t s t s t v A v A v B v C v D v E v B v C v D v E u u u u u d p o o n l m l l w x q h y y 5MXM90 a Heat...

Страница 83: ...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 instruct...

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