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6 Installation

Installer reference guide

16

ARXM25~35 RXM20~35 RXJ20~3

RXA20~35A3V1B

R32 split series

4P518023-5D – 2019.04

▪ 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.

6.6

Charging refrigerant

6.6.1

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).

INFORMATION

Depending on the units and/or the installation conditions, it
might be necessary to connect electrical wiring before you
can charge refrigerant.

Typical  workflow  –  Charging  additional  refrigerant  typically  consists
of the following stages:

1 Determining if and how much you have to charge additionally.

2 If necessary, charging additional refrigerant.

3 Filling in the fluorinated greenhouse gases label, and fixing it to

the inside of the outdoor unit.

Completely recharging refrigerant

Before completely recharging refrigerant, make sure the following is
done:

1 All refrigerant is recovered from the system.

2 The outdoor unit's 

external

 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
the outdoor unit's 

internal

 refrigerant piping as well.

Typical  workflow  –  Completely  recharging  refrigerant  typically
consists of the following stages:

1 Determining how much refrigerant to charge.

2 Charging refrigerant.

3 Filling in the fluorinated greenhouse gases label, and fixing it to

the inside of the outdoor unit.

6.6.2

About the refrigerant

This  product  contains  fluorinated  greenhouse  gases.  Do  NOT  vent
gases into the atmosphere.

Refrigerant type: R32

Global warming potential (GWP) value: 675

WARNING: 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, an operating gas appliance or an operating electric
heater).

WARNING

▪ Do NOT pierce or burn refrigerant cycle parts.

▪ Do NOT use cleaning materials or means to accelerate

the  defrosting  process  other  than  those  recommended
by the manufacturer.

▪ Be  aware  that  the  refrigerant  inside  the  system  is

odourless.

WARNING

The  refrigerant  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 the formation
of a harmful gas.

Turn  off  any  combustible  heating  devices,  ventilate  the
room,  and  contact  the  dealer  where  you  purchased  the
unit.

Do  NOT  use  the  unit  until  a  service  person  confirms  that
the  part  from  which  the  refrigerant  leaked  has  been
repaired.

6.6.3

Precautions when charging refrigerant

INFORMATION

Also  read  the  precautions  and  requirements  in  the
following chapters:

▪ General safety precautions

▪ Preparation

6.6.4

To determine the additional refrigerant
amount

If the total liquid

piping length is…

Then…

≤10 m

Do NOT add additional refrigerant.

>10 m

R=(total length (m) of liquid
piping⁠–⁠10 m)×0.020

R=Additional charge (kg) (rounded in units
of 0.1 kg)

INFORMATION

Piping length is the one-way length of liquid piping.

Содержание RXJ20M3V1B

Страница 1: ...eference guide R32 split series English Installer reference guide R32 split series ARXM25N2V1B9 ARXM35N2V1B9 RXM20N2V1B9 RXM25N2V1B9 RXM35N2V1B9 RXJ20M3V1B RXJ25M3V1B RXJ35M3V1B RXA20A3V1B RXA25A3V1B...

Страница 2: ...iping 15 6 5 3 To check for leaks 15 6 5 4 To perform vacuum drying 15 6 6 Charging refrigerant 16 6 6 1 About charging refrigerant 16 6 6 2 About the refrigerant 16 6 6 3 Precautions when charging re...

Страница 3: ...ive gloves safety glasses when installing maintaining or servicing the system WARNING Tear apart and throw away plastic packaging bags so that nobody especially children can play with them Possible ri...

Страница 4: ...nstallation of pipework shall be kept to a minimum WARNING If appliances contain R32 refrigerant the floor area of the room in which the appliances are installed operated and stored MUST be larger tha...

Страница 5: ...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 con...

Страница 6: ...e fixed wiring WARNING ONLY use copper wires Make sure the field wiring complies with the applicable legislation All field wiring MUST be performed in accordance with the wiring diagram supplied with...

Страница 7: ...latest technical data is available on the regional Daikin website publicly accessible The full set of latest technical data is available on the Daikin extranet authentication required 2 2 Installer r...

Страница 8: ...y flammable 4 1 Overview About the unit This chapter contains information about Identification of the outdoor unit 4 2 Identification NOTICE When installing or servicing several units at the same time...

Страница 9: ...ir outlet b Air inlet NOTICE The height of the wall on the outlet side of the outdoor unit MUST be 1200 mm NOTICE Do NOT stack the units on each other Do NOT hang the unit on a ceiling Strong winds 18...

Страница 10: ...eral snowfall is possible make sure that the heat exchanger coil is NOT affected by the snow If necessary install a snow cover or shed and a pedestal 5 2 3 Refrigerant piping length and height differe...

Страница 11: ...escribes what you have to do and know on site to install the system Typical workflow Installation typically consists of the following stages 1 Opening the unit 2 Mounting the outdoor unit 3 Connecting...

Страница 12: ...bottom side of the unit in order to prevent water from getting 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...

Страница 13: ...ion period Protection method Outdoor unit 1 month Pinch the pipe 1 month Pinch or tape the pipe Indoor unit Regardless of the period INFORMATION Do NOT open the refrigerant stop valve before checking...

Страница 14: ...panner on the stem cap as this could cause a refrigerant leak a b a Spanner b Torque wrench When it is expected that the operating pressure will be low e g when cooling will be performed while the out...

Страница 15: ...ely Using the same pump for other refrigerants may damage the pump and the unit NOTICE Connect the vacuum pump to the service port of the gas stop valve Make sure that the gas stop valve and liquid st...

Страница 16: ...Vacuum drying on the outdoor unit s internal refrigerant piping is performed NOTICE Before completely recharging perform vacuum drying on the outdoor unit s internal refrigerant piping as well Typical...

Страница 17: ...CO2 equivalent Formula to calculate the quantity in CO2 equivalent tonnes GWP value of the refrigerant total refrigerant charge in kg 1000 Use the GWP value mentioned on the refrigerant charge label...

Страница 18: ...A A a Curled single core wire b Screw c Flat washer Stranded conductor wire with round crimp style terminal c b b a c a B B a Terminal b Screw c Flat washer O Allowed X NOT allowed Tightening torques...

Страница 19: ...cally consists of the following stages 1 Checking the Checklist before commissioning 2 Performing a test run for the system 7 2 Precautions when commissioning DANGER RISK OF ELECTROCUTION DANGER RISK...

Страница 20: ...sumes electricity When the power turns back on after a power break the previously selected mode will be resumed 7 6 Starting up the outdoor unit See the indoor unit installation manual for configurati...

Страница 21: ...based on symptoms Before troubleshooting Carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring 11 2 Precautions when troublesho...

Страница 22: ...rate recovery system so that the unit s compressor does NOT have to operate NOTICE During pump down operation stop the compressor before removing the refrigerant piping If the compressor is still runn...

Страница 23: ...DS DIP SWITCH E H HEATER F U FU FOR CHARACTERISTICS FUSE REFER TO PCB INSIDE YOUR UNIT FG CONNECTOR FRAME GROUND H HARNESS H P LED V L PILOT LAMP LIGHT EMITTING DIODE HAP LIGHT EMITTING DIODE SERVICE...

Страница 24: ...rtain 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 Mainten...

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Страница 28: ...4P518023 5D 2019 04 Copyright 2018 Daikin...

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