Daikin RXYSA4A7V1B, RXYSA5A7V1B, RXYSA6A7V1B, RXYSA4A7Y1B, RXYSA5A7Y1B Installer reference guide
...
Installer and user reference guide
VRV 5-S system air conditioner
RXYSA4A7V1B
RXYSA5A7V1B
RXYSA6A7V1B
RXYSA4A7Y1B
RXYSA5A7Y1B
RXYSA6A7Y1B
Table of contents
Table of contents
1 About the documentation 6
1.1 About this document ...................................................................................................................................................... 6
1.2 Meaning of warnings and symbols................................................................................................................................. 6
2 General safety precautions 8
2.1 For the installer............................................................................................................................................................... 8
2.1.1 General ........................................................................................................................................................... 8
2.1.2 Installation site ............................................................................................................................................... 9
2.1.3 Refrigerant — in case of R410A or R32.......................................................................................................... 9
2.1.4 Electrical ......................................................................................................................................................... 11
3 Specific installer safety instructions 14
3.1 Instructions for equipment using R32 refrigerant ......................................................................................................... 17
3.1.1 Installation space requirements..................................................................................................................... 18
3.1.2 System layout requirements .......................................................................................................................... 19
3.1.3 To determine the charge limitations ............................................................................................................. 22
For the user 28
4 User safety instructions 29
4.1 General............................................................................................................................................................................ 29
4.2 Instructions for safe operation ....................................................................................................................................... 30
5 About the system 32
5.1 System layout.................................................................................................................................................................. 32
6 User interface 34
7 Before operation 35
8 Operation 36
8.1 Operation range.............................................................................................................................................................. 36
8.2 Operating the system ..................................................................................................................................................... 36
8.2.1 About operating the system........................................................................................................................... 36
8.2.2 About cooling, heating, fan only, and automatic operation ......................................................................... 36
8.2.3 About the heating operation.......................................................................................................................... 37
8.2.4 To operate the system (WITHOUT cool/heat changeover remote control switch)...................................... 37
8.2.5 To operate the system (WITH cool/heat changeover remote control switch) ............................................. 38
8.3 Using the dry program.................................................................................................................................................... 39
8.3.1 About the dry program................................................................................................................................... 39
8.3.2 To use the dry program (WITHOUT cool/heat changeover remote control switch) .................................... 39
8.3.3 To use the dry program (WITH cool/heat changeover remote control switch) ........................................... 39
8.4 Adjusting the air flow direction ...................................................................................................................................... 40
8.4.1 About the air flow flap.................................................................................................................................... 40
8.5 Setting the master user interface................................................................................................................................... 41
8.5.1 About setting the master user interface........................................................................................................ 41
8.5.2 To designate the master user interface ......................................................................................................... 41
9 Energy saving and optimum operation 42
9.1 Available main operation methods ................................................................................................................................ 43
9.2 Available comfort settings .............................................................................................................................................. 43
10 Maintenance and service 44
10.1 Maintenance after a long stop period............................................................................................................................ 45
10.2 Maintenance before a long stop period......................................................................................................................... 45
10.3 About the refrigerant...................................................................................................................................................... 45
10.4 After-sales service and warranty .................................................................................................................................... 46
10.4.1 Warranty period............................................................................................................................................. 46
10.4.2 Recommended maintenance and inspection................................................................................................ 46
10.4.3 Recommended maintenance and inspection cycles ..................................................................................... 47
10.4.4 Shortened maintenance and replacement cycles......................................................................................... 47
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11 Troubleshooting 49
11.1 Error codes: Overview .................................................................................................................................................... 51
11.2 Symptoms that are NOT system malfunctions............................................................................................................... 53
11.2.1 Symptom: The system does not operate....................................................................................................... 53
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Table of contents
11.2.2 Symptom: Cool/Heat cannot be changed over ............................................................................................. 53
11.2.3 Symptom: Fan operation is possible, but cooling and heating do not work ................................................ 53
11.2.4 Symptom: The fan speed does not correspond to the setting...................................................................... 53
11.2.5 Symptom: The fan direction does not correspond to the setting................................................................. 54
11.2.6 Symptom: White mist comes out of a unit (Indoor unit) .............................................................................. 54
11.2.7 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)........................................................ 54
11.2.8 Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes.......... 54
11.2.9 Symptom: Noise of air conditioners (Indoor unit)......................................................................................... 54
11.2.10 Symptom: Noise of air conditioners (Indoor unit, outdoor unit) .................................................................. 54
11.2.11 Symptom: Noise of air conditioners (Outdoor unit)...................................................................................... 55
11.2.12 Symptom: Dust comes out of the unit........................................................................................................... 55
11.2.13 Symptom: The units can give off odours ....................................................................................................... 55
11.2.14 Symptom: The outdoor unit fan does not spin.............................................................................................. 55
11.2.15 Symptom: The compressor in the outdoor unit does not stop after a short heating operation ................. 55
11.2.16 Symptom: The inside of an outdoor unit is warm even when the unit has stopped.................................... 55
11.2.17 Symptom: Hot air can be felt when the indoor unit is stopped.................................................................... 55
12 Relocation 56
13 Disposal 57
14 Technical data 58
14.1 Information requirements for Eco Design...................................................................................................................... 58
For the installer 59
15 About the box 60
15.1 Overview: About the box ................................................................................................................................................ 60
15.2 Outdoor unit ................................................................................................................................................................... 60
15.2.1 To unpack the outdoor unit ........................................................................................................................... 60
15.2.2 To handle the outdoor unit............................................................................................................................ 61
15.2.3 To remove the accessories from the outdoor unit........................................................................................ 61
16 About the units and options 63
16.1 Identification ................................................................................................................................................................... 63
16.1.1 Identification label: Outdoor unit .................................................................................................................. 63
16.2 About the outdoor unit................................................................................................................................................... 63
16.3 System layout .................................................................................................................................................................. 64
16.4 Combining units and options .......................................................................................................................................... 64
16.4.1 About combining units and options............................................................................................................... 64
16.4.2 Possible combinations of indoor units........................................................................................................... 65
16.4.3 Possible options for the outdoor unit............................................................................................................ 65
17 Unit installation 66
17.1 Preparing the installation site......................................................................................................................................... 66
17.1.1 Installation site requirements of the outdoor unit........................................................................................ 66
17.1.2 Additional installation site requirements of the outdoor unit in cold climates............................................ 69
17.2 Opening and closing the unit .......................................................................................................................................... 69
17.2.1 About opening the units................................................................................................................................. 69
17.2.2 To open the outdoor unit............................................................................................................................... 70
17.2.3 To close the outdoor unit............................................................................................................................... 70
17.3 Mounting the outdoor unit............................................................................................................................................. 71
17.3.1 About mounting the outdoor unit ................................................................................................................. 71
17.3.2 Precautions when mounting the outdoor unit.............................................................................................. 71
17.3.3 To provide the installation structure ............................................................................................................. 71
17.3.4 To install the outdoor unit ............................................................................................................................. 72
17.3.5 To provide drainage........................................................................................................................................ 72
17.3.6 To prevent the outdoor unit from falling over .............................................................................................. 73
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18 Piping installation 75
18.1 Preparing refrigerant piping ........................................................................................................................................... 75
18.1.1 Refrigerant piping requirements.................................................................................................................... 75
18.1.2 Refrigerant piping material ............................................................................................................................ 75
18.1.3 To select the piping size ................................................................................................................................. 76
18.1.4 To select refrigerant branch kits.................................................................................................................... 77
18.1.5 Refrigerant piping length and height difference ........................................................................................... 78
18.2 Connecting the refrigerant piping .................................................................................................................................. 79
18.2.1 About connecting the refrigerant piping....................................................................................................... 79
18.2.2 Precautions when connecting the refrigerant piping.................................................................................... 79
18.2.3 Pipe bending guidelines ................................................................................................................................. 80
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18.2.4 To braze the pipe end..................................................................................................................................... 80
18.2.5 Using the stop valve and service port............................................................................................................ 81
18.2.6 To remove the spun pipes.............................................................................................................................. 82
18.2.7 To connect the refrigerant piping to the outdoor unit ................................................................................. 83
18.2.8 To connect the refrigerant branching kit....................................................................................................... 85
18.3 Checking the refrigerant piping ...................................................................................................................................... 86
18.3.1 About checking the refrigerant piping........................................................................................................... 86
18.3.2 Checking refrigerant piping: General guidelines ........................................................................................... 87
18.3.3 Checking refrigerant piping: Setup ................................................................................................................ 88
18.3.4 To perform a leak test.................................................................................................................................... 88
18.3.5 To perform vacuum drying............................................................................................................................. 89
19 Charging refrigerant 90
19.1 About charging refrigerant ............................................................................................................................................. 90
19.2 About the refrigerant...................................................................................................................................................... 90
19.3 Precautions when charging refrigerant .......................................................................................................................... 91
19.4 To determine the additional refrigerant amount .......................................................................................................... 93
19.5 To charge refrigerant ...................................................................................................................................................... 94
19.6 Error codes when charging refrigerant .......................................................................................................................... 96
19.7 To fix the fluorinated greenhouse gases label ............................................................................................................... 96
19.8 To check for refrigerant leaks after charging ................................................................................................................. 97
19.9 To insulate the refrigerant piping ................................................................................................................................... 97
20 Electrical installation 100
20.1 About connecting the electrical wiring .......................................................................................................................... 100
20.1.1 Precautions when connecting the electrical wiring....................................................................................... 100
20.1.2 Field wiring: Overview.................................................................................................................................... 101
20.1.3 Guidelines when knocking out knockout holes............................................................................................. 102
20.1.4 Guidelines when connecting the electrical wiring......................................................................................... 103
20.1.5 About electrical compliance........................................................................................................................... 104
20.1.6 Safety device requirements ........................................................................................................................... 104
20.2 To connect the electrical wiring to the outdoor unit..................................................................................................... 105
20.3 To connect the external outputs .................................................................................................................................... 108
20.4 To connect the cool/heat selector switch option .......................................................................................................... 109
20.5 To check the insulation resistance of the compressor .................................................................................................. 110
21 Configuration 112
21.1 Overview: Configuration ................................................................................................................................................. 112
21.2 Making field settings ....................................................................................................................................................... 113
21.2.1 About making field settings............................................................................................................................ 113
21.2.2 To access the field setting components......................................................................................................... 114
21.2.3 Field setting components............................................................................................................................... 114
21.2.4 To access mode 1 or 2.................................................................................................................................... 115
21.2.5 To use mode 1................................................................................................................................................ 116
21.2.6 To use mode 2................................................................................................................................................ 117
21.2.7 Mode 1: Monitoring settings ......................................................................................................................... 118
21.2.8 Mode 2: Field settings.................................................................................................................................... 119
21.3 Energy saving and optimum operation .......................................................................................................................... 124
21.3.1 Available main operation methods................................................................................................................ 124
21.3.2 Available comfort settings.............................................................................................................................. 125
21.3.3 Example: Automatic mode during cooling..................................................................................................... 127
21.3.4 Example: Automatic mode during heating.................................................................................................... 128
22 Commissioning 130
22.1 Precautions when commissioning .................................................................................................................................. 130
22.2 Checklist before commissioning ..................................................................................................................................... 131
22.3 Checklist during commissioning ..................................................................................................................................... 132
22.4 About the test run........................................................................................................................................................... 132
22.5 To perform a test run (7-segment display) .................................................................................................................... 132
22.6 Correcting after abnormal completion of the test run .................................................................................................. 133
23 Hand-over to the user 134
24 Maintenance and service 135
24.1 Maintenance safety precautions .................................................................................................................................... 135
24.1.1 To prevent electrical hazards......................................................................................................................... 136
24.2 Checklist for yearly maintenance of the outdoor unit ................................................................................................... 137
24.3 About service mode operation ....................................................................................................................................... 137
24.3.1 To use vacuum mode ..................................................................................................................................... 137
24.3.2 To recover refrigerant.................................................................................................................................... 137
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25 Troubleshooting 138
25.1 Overview: Troubleshooting ............................................................................................................................................ 138
25.2 Precautions when troubleshooting ................................................................................................................................ 138
25.3 Solving problems based on error codes ......................................................................................................................... 138
25.3.1 Error codes: Overview.................................................................................................................................... 139
25.4 Refrigerant leak detection system.................................................................................................................................. 141
26 Disposal 144
27 Technical data 145
27.1 Service space: Outdoor unit ........................................................................................................................................... 146
27.2 Piping diagram: Outdoor unit ......................................................................................................................................... 148
27.3 Wiring diagram: Outdoor unit ........................................................................................................................................ 149
28 Glossary 153
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Installer and user reference guide
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1 | About the documentation
1 About the documentation
In this chapter
1.1 About this document.............................................................................................................................................................. 6
1.2 Meaning of warnings and symbols......................................................................................................................................... 6
1.1 About this document
Target audience
Authorised installers + end users
Documentation set
This document is part of a documentation set. The complete set consists of:
INFORMATION
This appliance is intended to be used by expert or trained users in shops, in light
industry and on farms, or for commercial use by lay persons.
▪ General safety precautions:
- Safety instructions that you must read before installing
- Format: Paper (in the box of the outdoor unit)
▪ Outdoor unit installation and operation manual:
- Installation and operation instructions
- Format: Paper (in the box of the outdoor unit)
▪ Installer and user reference guide:
- Preparation of the installation, reference data,…
- Detailed step-by-step instructions and background information for basic and
advanced usage
- Format: Digital files on http://www.daikineurope.com/support-and-manuals/
product-information/
Latest revisions of the supplied documentation may be available on the regional
Daikin website or via your dealer.
The original documentation is written in English. All other languages are
translations.
1.2 Meaning of warnings and symbols
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DANGER
Indicates a situation that results in death or serious injury.
DANGER: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1B – 2020.10
1 | About the documentation
DANGER: RISK OF BURNING/SCALDING
Indicates a situation that could result in burning/scalding because of extreme hot or
cold temperatures.
DANGER: RISK OF EXPLOSION
Indicates a situation that could result in explosion.
WARNING
Indicates a situation that could result in death or 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.
INFORMATION
Indicates useful tips or additional information.
Symbols used on the unit:
Symbol Explanation
Before installation, read the installation and operation
manual, and the wiring instruction sheet.
Before performing maintenance and service tasks, read the
service manual.
For more information, see the installer and user reference
guide.
The unit contains rotating parts. Be careful when servicing or
inspecting the unit.
Symbols used in the documentation:
Symbol Explanation
Indicates a figure title or a reference to it.
Example: " 1–3 Figure title" means "Figure 3 in chapter 1".
Indicates a table title or a reference to it.
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1B – 2020.10
Example: " 1–3 Table title" means "Table 3 in chapter 1".
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2 | General safety precautions
2 General safety precautions
In this chapter
2.1 For the installer....................................................................................................................................................................... 8
2.1 For the installer
2.1.1 General
If you are NOT sure how to install or operate the unit, contact your dealer.
2.1.1 General ................................................................................................................................................................... 8
2.1.2 Installation site ....................................................................................................................................................... 9
2.1.3 Refrigerant — in case of R410A or R32 ................................................................................................................. 9
2.1.4 Electrical ................................................................................................................................................................. 11
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 to return
to normal temperature. If you must touch it, wear protective gloves.
▪ Do NOT touch any accidental leaking refrigerant.
WARNING
Improper installation or attachment of equipment or accessories could result in
electrical 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 instructions described in the Daikin documentation).
CAUTION
Wear adequate personal protective equipment (protective 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 risk: suffocation.
WARNING
Provide adequate measures to prevent that the unit can be used as a shelter by small
animals. Small animals that make contact with electrical parts can cause
malfunctions, smoke or fire.
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CAUTION
Do NOT touch the air inlet or aluminium fins of the unit.
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2 | General safety precautions
CAUTION
▪ Do NOT place any objects or equipment on top of the unit.
▪ Do NOT sit, climb or stand on the unit.
NOTICE
Works executed on the outdoor unit are best done under dry weather conditions to
avoid water ingress.
In accordance with the applicable legislation, it might be necessary to provide a
logbook with the product containing at least: information on maintenance, repair
work, results of tests, stand-by periods,…
Also, at least, following information 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 day and night telephone numbers for obtaining service
In Europe, EN378 provides the necessary guidance for this logbook.
2.1.2 Installation site
▪ Provide sufficient space around the unit for servicing and air circulation.
▪ Make sure the installation site withstands the weight and vibration of the unit.
▪ Make sure the area is well ventilated. Do NOT block any ventilation openings.
▪ Make sure the unit is level.
Do NOT install the unit in the following places:
▪ In potentially explosive atmospheres.
▪ In places where there is machinery that emits electromagnetic waves.
Electromagnetic waves may disturb the control system, and cause malfunction of
the equipment.
▪ In places 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.
Corrosion of copper pipes or soldered parts may cause the refrigerant to leak.
2.1.3 Refrigerant — in case of R410A or R32
If applicable. See the installation manual or installer reference guide of your
application for more information.
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NOTICE
Make sure refrigerant piping installation complies with applicable legislation. In
Europe, EN378 is the applicable standard.
NOTICE
Make sure the field piping and connections are NOT subjected to stress.
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2 | General safety precautions
WARNING
During tests, NEVER pressurize the product with a pressure higher than the
maximum allowable pressure (as indicated on the nameplate of the unit).
WARNING
Take 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
deficiency.
▪ Toxic gas might be produced if refrigerant gas comes into contact with fire.
DANGER: RISK OF EXPLOSION
Pump down – Refrigerant leakage. If you want to pump down the system, and there
is a leak in the refrigerant circuit:
▪ Do NOT use the unit's automatic pump down function, with which you can collect
all refrigerant from the system into the outdoor unit. Possible consequence: Selfcombustion and explosion of the compressor because of air going into the
operating compressor.
▪ Use a separate recovery system so that the unit's compressor does NOT have to
operate.
WARNING
ALWAYS recover the refrigerant. Do NOT release them directly into the environment.
Use a vacuum pump to evacuate the installation.
NOTICE
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 charged after
performing the leak test and the vacuum drying.
Possible consequence: Self-combustion and explosion of the compressor because of
oxygen going into the operating compressor.
▪ In case recharge is required, see the nameplate of the unit. It states the type of
refrigerant and necessary amount.
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▪ The unit is factory charged with refrigerant and depending on pipe sizes and pipe
lengths some systems require additional charging of refrigerant.
▪ Only use tools exclusively for the refrigerant type used in the system, this to
ensure pressure resistance and prevent foreign materials from entering into the
system.
▪ Charge the liquid refrigerant as follows:
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4P600330-1B – 2020.10
2 | General safety precautions
If Then
A siphon tube is present
Charge with the cylinder upright.
(i.e., the cylinder is marked with "Liquid
filling siphon attached")
A siphon tube is NOT present Charge with the cylinder upside down.
▪ Open refrigerant cylinders slowly.
▪ Charge the refrigerant in 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 valve is NOT closed immediately, remaining
pressure might charge additional refrigerant. Possible consequence: Incorrect
refrigerant amount.
2.1.4 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 power supply for more than 10minutes, and measure the voltage
at the terminals of main circuit capacitors or electrical components before
servicing. The voltage MUST be less than 50VDC before you can touch electrical
components. For the location of the terminals, see the wiring diagram.
▪ Do NOT touch electrical components with wet hands.
▪ Do NOT leave the unit unattended when the service cover is removed.
WARNING
If NOT factory installed, a main switch or other means for disconnection, having a
contact separation in all poles providing full disconnection under overvoltage
categoryIII condition, MUST be installed in the fixed wiring.
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VRV 5-S system air conditioner
4P600330-1B – 2020.10
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2 | General safety precautions
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 the product.
▪ NEVER squeeze bundled cables and make sure they do NOT come in contact with
the piping and sharp edges. Make sure no external pressure is applied to the
terminal connections.
▪ Make sure to install earth wiring. Do NOT earth the unit to a utility pipe, surge
absorber, or telephone earth. Incomplete earth may cause electrical shock.
▪ Make sure to use a dedicated power circuit. NEVER use a power supply shared by
another appliance.
▪ Make sure to install the required fuses or circuit breakers.
▪ Make sure to install an earth leakage protector. Failure to do so may cause
electrical shock or fire.
▪ 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.
CAUTION
▪ When connecting the power supply: connect the earth cable first, before making
the current-carrying connections.
▪ When disconnecting the power supply: disconnect the current-carrying cables
first, before separating the earth connection.
▪ The length of the conductors between the power supply stress relief and the
terminal block itself must be as such that the current-carrying wires are tautened
before the earth wire is in case the power supply is pulled loose from the stress
relief.
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 same thickness, do as shown in the figure
above.
▪ For wiring, use the designated power wire and connect firmly, then secure to
prevent outside pressure being exerted on the terminal board.
▪ Use an appropriate screwdriver for tightening the terminal screws. A screwdriver
with a small head will damage the head and make proper tightening impossible.
▪ Over-tightening the terminal screws may break them.
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Install power cables at least 1 m away from televisions or radios to prevent
interference. Depending on the radio waves, a distance of 1 m may not be
sufficient.
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4P600330-1B – 2020.10
2 | General safety precautions
WARNING
▪ After 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 unit.
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 after a momentary black out and the
power goes on and off while the product is operating, attach a reversed phase
protection circuit locally. Running the product in reversed phase can break the
compressor and other parts.
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4P600330-1B – 2020.10
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3 | Specific installer safety instructions
3 Specific installer safety instructions
Always observe the following safety instructions and regulations.
CAUTION
The cloth inside the left handle is intended to protect the hand from being cut by the
aluminium fins of the unit.
Remove the cloth after the unit is completely mounted.
Installation site (see
"17.1Preparing the installation site"[466]
WARNING
Follow the service space dimensions in this manual for correct installation of the unit.
See Service space: Outdoor unit.
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).
CAUTION
Appliance not accessible to the general public, install it in a secured area, protected
from easy access.
This unit, both indoor and outdoor, is suitable for installation in a commercial and
light industrial environment.
Opening and closing the unit (see
DANGER: RISK OF BURNING/SCALDING
)
"17.2Opening and closing the unit"[469]
)
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DANGER: RISK OF ELECTROCUTION
Mounting the outdoor unit (see
WARNING
Fixing method of the outdoor unit MUST be in accordance with the instructions from
this manual. See "17.3Mounting the outdoor unit"[471].
"17.3Mounting the outdoor unit"[471]
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)
3 | Specific installer safety instructions
Connecting the refrigerant piping (see
piping"[479]
)
WARNING
Any gas or oil remaining inside the stop valve may blow off the spun piping.
If these instructions are NOT followed correctly it may result in property damage or
personal injury, which may be serious depending on the circumstances.
WARNING
NEVER remove the spun piping by brazing.
Any gas or oil remaining inside the stop valve may blow off the spun piping.
CAUTION
Do not vent gases into the atmosphere.
WARNING
Provide adequate measures to prevent that the unit can be used as a shelter by small
animals. Small animals that make contact with electrical parts can cause
malfunctions, smoke or fire.
"18.2Connecting the refrigerant
CAUTION
NEVER install a drier to this unit to guarantee its lifetime. The drying material may
dissolve and damage the system.
Charging refrigerant (see
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.
WARNING
Charging of refrigerant MUST be in accordance with the instructions from this
manual. See "19Charging refrigerant"[490].
WARNING
▪ Only use R32 as refrigerant. Other substances may cause explosions and
accidents.
▪ R32 contains fluorinated greenhouse gases. Its global warming potential (GWP)
value is 675. Do NOT vent these gases into the atmosphere.
▪ When charging refrigerant, ALWAYS use protective gloves and safety glasses.
"19Charging refrigerant"[490]
)
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1B – 2020.10
Installer and user reference guide
15
3 | Specific installer safety instructions
Electrical installation (see
WARNING
▪ All wiring MUST be performed by an authorised electrician and MUST comply
with the applicable legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical construction MUST comply
with the applicable legislation.
WARNING
Electrical wiring connection method MUST be in accordance with the instructions
from this manual. See "20Electrical installation"[4100].
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
▪ If the power supply has a missing 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 shock.
▪ Install the required fuses or circuit breakers.
▪ Secure the electrical wiring with cable ties so that the cables do NOT come in
contact with sharp edges or piping, particularly on the high-pressure side.
▪ Do NOT use taped wires, stranded conductor wires, extension cords, or
connections from 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 performance and may cause
accidents.
"20Electrical installation"[4100]
)
Installer and user reference guide
16
CAUTION
Do NOT push or place redundant cable length in the unit.
Commissioning (see
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. 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 NOT
remove the fan guard. When the fan is rotating at high speed, it will cause injury.
"22Commissioning"[4130]
)
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1B – 2020.10
3 | Specific installer safety instructions
Troubleshooting (see
In this chapter
3.1 Instructions for equipment using R32 refrigerant ................................................................................................................. 17
"25Troubleshooting"[4138]
)
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 activated, stop the unit and find out why the safety
device was activated before resetting it. NEVER shunt safety devices or change
their values to a value other than the factory default setting. If you are unable to
find the cause of the problem, call your dealer.
WARNING
Prevent hazards due to inadvertent resetting of the thermal cut-out: power to this
appliance MUST NOT be 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.
3.1.1 Installation space requirements ............................................................................................................................ 18
3.1.2 System layout requirements .................................................................................................................................. 19
3.1.3 To determine the charge limitations ..................................................................................................................... 22
3.1 Instructions for equipment using R32 refrigerant
WARNING: MILDLY FLAMMABLE MATERIAL
The refrigerant inside this unit is mildly flammable.
WARNING
▪ Do NOT pierce or burn.
▪ Do NOT use means to accelerate the defrosting process or to clean the
equipment, other than those recommended by the manufacturer.
▪ Be aware that R32 refrigerant does NOT contain an odour.
WARNING
The appliance shall be stored so as to prevent mechanical damage and in a wellventilated room without continuously operating ignition sources (example: open
flames, an operating gas appliance or an operating electric heater) and have a room
size as specified below.
See "To determine the charge limitations" [4 22] to check if your system meets
the requirement for charge limitation.
WARNING
Make sure installation, servicing, maintenance and repair comply with instructions
from Daikin and with applicable legislation (for example national gas regulation) and
are executed only by authorised persons.
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1B – 2020.10
Installer and user reference guide
17
3 | Specific installer safety instructions
WARNING
If one or more rooms are connected to the unit using a duct system, make sure:
▪ there are no operating 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 (m²).
▪ no auxiliary devices, which may be a potential ignition source, are installed in the
duct work (example: hot surfaces with a temperature exceeding 700°C and
electric switching device);
▪ only auxiliary devices approved by the manufacturer are used in the duct work;
▪ air inlet AND outlet are connected directly to the same room by ducting. Do NOT
use spaces such as a false ceiling as a duct for the air inlet or outlet.
See "To determine the charge limitations" [4 22] to check if your system meets
the requirement for charge limitation.
NOTICE
▪ Precautions shall be taken to avoid excessive vibration or pulsation to
refrigeration piping.
▪ Protection devices, piping and fittings shall be protected as far as possible against
adverse environmental effects.
▪ Provision shall be made for expansion and contraction of long runs of piping.
▪ Piping in refrigerating systems shall be designed and installed such as to minimise
the likelihood of hydraulic shock damaging the system.
▪ The indoor equipment and pipes shall be securely mounted and guarded such
that accidental rupture of equipment or pipes cannot occur from events such as
moving furniture or reconstruction activities.
CAUTION
Do NOT use potential sources of ignition in searching for or detection of refrigerant
leaks.
NOTICE
▪ Do NOT re-use joints and copper gaskets which have been used already.
▪ Joints made in installation between parts of refrigerant system shall be accessible
for maintenance purposes.
3.1.1 Installation space requirements
WARNING
If the appliance contains R32 refrigerant, the floor area of the room in which the
appliance is stored shall be at least 98.3m².
NOTICE
▪ Pipework shall be protected from physical damage.
▪ Installation of pipework shall be kept to a minimum.
Installer and user reference guide
18
VRV 5-S system air conditioner
RXYSA4~6A7V/Y1B
4P600330-1B – 2020.10
3.1.2 System layout requirements
The VRV 5-S uses R32 refrigerant which is rated as A2L and is mildly flammable.
To comply with the requirements of enhanced tightness refrigerating systems of
the IEC 60335-2-40, this system is equipped with shut-off valves in the outdoor
unit and an alarm in the remote controller. In case the requirements of this manual
are followed, no additional safety measures are needed.
A big range of charge and room area combinations is allowed thanks to the
countermeasures that are implemented in the unit by default.
Follow the installation requirements below to ensure that the complete system is
compliant to legislation.
Outdoor unit installation
The outdoor unit has to be installed outside. For indoor installation of the outdoor
unit, additional measures can be necessary to comply with the applicable
legislation.
A terminal for external output is available in the outdoor unit. This SVS output can
be used when additional countermeasures are needed. The SVS output is a contact
on terminal X2M that closes in case a leak is detected, failure or disconnection of
the R32 sensor (located in the indoor unit).
3 | Specific installer safety instructions
For more information about the SVS output, see "20.3 To connect the external
outputs"[4108].
Indoor unit installation
For installation of the indoor unit, refer to the installation and operation manual
delivered with the indoor unit. For compatibility of indoor units refer to the latest
version of the technical data book of this unit.
The total amount of refrigerant in the system shall be less than or equal to the
maximum allowed total refrigerant amount. The maximum allowed total
refrigerant amount depends on the area of the rooms being served by the system
and the rooms in the lowest underground floor.
See "To determine the charge limitations" [4 22] to check if your system meets
the requirement for charge limitation.
An optional output PCB for the indoor unit can be added to provide output for
external device. The output PCB will trigger in case a leak is detected, the R32
sensor fails or when the sensor is disconnected. For exact model name see option
list of the indoor unit. For more information about this option, refer to the
installation manual of the optional output PCB.
Piping requirements
Piping must be installed according to instructions given in "18 Piping
installation"[4 75]. Only mechanical joints (e.g. braze+flare connections) that are
compliant with the latest version of ISO14903 can be used.
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1B – 2020.10
For piping installed in the occupied space, please make sure that the piping is
protected against accidental damage. Piping should be checked according to
procedure as mentioned in "18.3Checking the refrigerant piping"[486].
Installer and user reference guide
19
3 | Specific installer safety instructions
b
a
c
d
f
h
e
d
c
b b
c
d
g
h h
Remote controller requirements
a Heat pump outdoor unit
b Refrigerant piping
c VRV direct expansion (DX) indoor unit
d Remote controller in normal mode
e Remote controller in alarm only mode
f Remote controller in supervisor mode (mandatory in some situations)
g iTM (optional)
h Option PCB (optional)
For installation of the remote controller, please refer to the installation and
operation manual delivered with the remote controller. Each indoor unit has to be
connected with a R32 safety system compatible remote controller (e.g.
BRC1H52/82* or later type). These remote controllers have implemented safety
measures that will warn the user visually and audibly in case of a leak.
For installation of the remote controller it is mandatory to follow the requirements.
1 Only a safety system compatible remote controller can be used. See technical
data sheet for remote controller compatibility (e.g. BRC1H52/82*).
2 Each indoor unit has to be connected to a separate remote controller.
3 Even if multiple indoors are in the same room, they should all have a separate
remote controller.
4 The remote controller put in the same room as the indoor unit has to be in
fully functional mode or alarm only mode. For details about the different
remote controller modes and how to set up, please check the note below or
refer to the installation and operation manual delivered with the remote
controller.
5 Group control is not allowed.
6 For buildings where sleeping facilities are offered (e.g. hotel), where persons
are restricted in their movements (e.g. hospitals), an uncontrolled number of
persons is present or buildings where people are not aware of the safety
precautions it is mandatory to install one of the following devices at a location
with 24-hour monitoring:
▪ a supervisor remote controller
▪ or an iTM with external alarm via WAGO module.
Note: The remote controller will generate a visible and audible warning. E.g. the
BRC1H52/82* remote controllers can generate an alarm of 65dB (sound pressure,
measured at 1m distance of the alarm). Sound data is available in the technical
data sheet of the remote controller. The alarm should always be 15dB louder than
the background noise of the room. In case of higher background noise in a certain
room, we recommend to use an external alarm (field supply) in that room. This
alarm can be connected to the SVS output channel of the outdoor unit or to the
optional output PCB of the indoor unit of that specific room.
For more information on the SVS output signal, see "20.2To connect the electrical
wiring to the outdoor unit"[4105].
Installer and user reference guide
20
VRV 5-S system air conditioner
RXYSA4~6A7V/Y1B
4P600330-1B – 2020.10
3 | Specific installer safety instructions
a
c
b
a
d
b
a
b
c
b
b
a
b
d
b
d
b
d
a
d
b
a
d
b
Note: Depending on configuration, the remote controller is operable in three
possible modes. Each mode offers different controller functionality. For detailed
information about setting the operation mode of the remote controller and its
function, please refer to the installer and user reference guide of the remote
controller.
Mode Function
Fully functional The controller is fully functional. All normal
functionality is available. This controller can be master
or slave.
Alarm only The controller only acts as leak detection alarm (for a
single indoor unit). No functionality is available. The
remote controller should always be put in the same
room as the indoor unit. This controller can be master
or slave.
Supervisor The controller only acts as leak detection alarm (for
the whole system, i.e. multiple indoor units and their
respective controllers). No other functionality is
available. The remote controller should be placed at a
supervised location. This remote controller can only
be the slave.
Note: In order to add a supervisor remote controller to
the system, a field setting should be set on both
remote controller and outdoor unit.
Note: Incorrect use of remote controllers can result in occurrence of error codes,
non-operating system or system that is not compliant to applicable legislation.
Note: iTM in combination with a WAGO module can also be used as supervisor
remote controller. For further details on installation, please refer to installation
manual of the iTM.
Examples
NOT OK OK Case
1
2
Remote controller is not R32 safety
system compatible
Indoor units without remote
controller are not allowed
3
In case of one R32 safety system
compatible remote controller, it
should be the master and in the same
room of the indoor unit.
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1B – 2020.10
Installer and user reference guide
21
3 | Specific installer safety instructions
a
d
d
b
a
d
d
b
a
b b b
d
a
b b b
d d d
a
b
d
b
d
e
f
NOT OK OK Case
4
5
6
In room: master remote controller in fully functional OR alarm only.
In supervisor room: supervisor remote controller
a Outdoor unit
b Indoor unit
c Remote controller NOT compatible with R32 safety system
d Remote controller compatible with R32 safety system
e Remote controller in supervisor mode
f Supervisor room
In case of two R32 safety system
compatible remote controllers, at
least one remote controller should be
in the room of the indoor.
Group control system is not allowed.
Each indoor unit should be connected
to a separate remote controller
In particular situations it is mandatory
to install a remote controller at a
supervised location
3.1.3 To determine the charge limitations
1 Determine the area of the smallest room in order to derive the total
refrigerant charge limit in the system:
The room area can be determined by projecting the walls, doors and
partitions to the floor and calculate the enclosed area. The area of the
smallest room being served by the system is used in the next step to
determine the maximum allowable total charge of the system.
Spaces connected by only false ceilings, ductwork, or similar connections
shall not be considered a single space.
If the partition between 2 rooms on the same floor meets certain
requirements then the rooms are considered as one room and the areas of
the rooms may be added up. In this way it is possible to increase the A
value used to calculate the maximum allowed charge.
One of the following 2 requirements must be met in order to add up room
areas.
1 Rooms on the same floor that are connected with a permanent opening
that extends to the floor and is intended for people to walk through can
be considered as one room.
min
Installer and user reference guide
22
VRV 5-S system air conditioner
RXYSA4~6A7V/Y1B
4P600330-1B – 2020.10
3 | Specific installer safety instructions
A
nvmin
≥ 20 mm
≥ 50% A
nvmin
≤ 100 mm
1500
mm
300
mm
200
mm
≥ 20 mm
2 Rooms on the same floor connected with openings that fulfil following
requirements can be considered as a single room. The opening must
consist out of 2 parts to allow for air circulation.
For the lower opening:
- The opening cannot go outdoors
- The opening cannot be closed
- The lower opening must be ≥0.012m² (A
nvmin
)
- The area of any openings above 300 mm from the floor does not
count when determining A
- At least 50% of A
nvmin
nvmin
is less than 200mm above the floor
- The bottom of the lower opening is ≤100mm from the floor
- The height of the openings is ≥20mm
For the upper opening:
- The opening cannot go outdoors
- The opening cannot be closed
- The upper opening must be ≥0.006m² (50% of A
nvmin
)
- The bottom of the upper opening must be ≥1500 mm above the
floor
- The height of the opening is ≥20mm
Note: The requirement for the upper opening can be met by drop
ceilings, ventilation ducts or similar arrangements that provide an airflow
path between the connected rooms.
2 Depending on the installation height of the indoor units, different values may
be used in the next step IF:
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1B – 2020.10
▪ installation height is1.8≤x<2.2m, then use the charge limit of the graph for
wall-mounted units.
▪ installation height is ≥2.2 m, then use the charge limit of the graph for
ceiling-mounted units.
NOTICE
Wall mounted units cannot be installed lower than 1,8 m from the lowest point of
the floor. Ceiling mounted units cannot be installed lower than 2,2m from the lowest
point of the floor.
3 Use the graph or table below to determine the total refrigerant charge limit in
the system.
Installer and user reference guide
23
3 | Specific installer safety instructions
OTHER FLOORS
Curve (c) = room area ≥10 m²
Curve (a) OR (b) = room area <15 m²
Curve (a)(b) = room area ≥15 m²
LOWEST UNDERGROUND FLOOR
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
10 20 30 40 50 60 70 80 90
15 25 35 45 55 65 75 85 95
100
m (kg)
A
min
(m2)
(b)
(a)
(a)(b)
(c)
In case there are any underground floors in the building, there are special
requirements for the maximum allowable charge.
The maximum allowable charge is determined by using graph "(a)" or "(b)"
and "(a)(b)" for the room with the smallest area on the lowest underground
floor.
The maximum allowable charge has to be assessed for the room with the
smallest room area in both the lowest underground floor and the other
floors.
The lowest maximum allowable charge of both MUST be used.
Note: The derived charge value should be rounded down.
Installer and user reference guide
24
VRV 5-S system air conditioner
RXYSA4~6A7V/Y1B
4P600330-1B – 2020.10
3 | Specific installer safety instructions
m (kg)
A
min
(m2)
m (kg)
A
min
(m2)
m (kg)
A
min
(m2)
(a)
Lowest underground floor (ceiling-mounted units)
(b)
Lowest underground floor (wall-mounted units)
(c)
Smallest room on other oors (all units)
23 7.7
(a)(b)
/ 12.7
(c)
24 8.1
(a)(b)
/ 13.1
(c)
25 8.4
(a)(b)
/ 13.4
(c)
26 8.7
(a)(b)
/ 13.7
(c)
27 9.1
(a)(b)
/ 14.1
(c)
10 3.9
(a)
/ 3.3
(b)
/ 6.5
(c)
28 9.4
(a)(b)
/ 14.4
(c)
11 4.1
(a)
/ 3.7
(b)
/ 7.2
(c)
29 9.7
(a)(b)
/ 14.7
(c)
12 4.3
(a)
/ 4.0
(b)
/ 7.9
(c)
30 10.1
(a)(b)
/ 15.1
(c)
13 4.5
(a)
/ 4.3
(b)
/ 8.6
(c)
31 10.4
(a)(b)
/ 15.4
(c)
14 4.7
(a)(b)
/ 9.3
(c)
32 10.8
(a)(b)
/ 15.8
(c)
15 5.0
(a)(b)
/ 10.0
(c)
33 11.1
(a)(b)
/ 16.1
(c)
16 5.4
(a)(b)
/ 10.4
(c)
34 11.4
(a)(b)
/ 16.4
(c)
17 5.7
(a)(b)
/ 10.7
(c)
35 11.8
(a)(b)
/ 16.8
(c)
18 6
(a)(b)
/ 11.0
(c)
36 12.1
(a)(b)
/ 17.1
(c)
19 6.4
(a)(b)
/ 11.4
(c)
37 12.4
(a)(b)
/ 17.4
(c)
20 6.7
(a)(b)
/ 11.7
(c)
38 12.8
(a)(b)
/ 17.8
(c)
21 7
(a)(b)
/ 12.0
(c)
22 7.4
(a)(b)
/ 12.4
(c)
90 30.3
(a)(b)
/ 35.3
(c)
91 30.7
(a)(b)
/ 35.7
(c)
92 31.0
(a)(b)
/ 36.0
(c)
93 31.4
(a)(b)
/ 36.4
(c)
94 31.7
(a)(b)
/ 36.7
(c)
95 32.0
(a)(b)
/ 37.0
(c)
96 32.4
(a)(b)
/ 37.4
(c)
97 32.7
(a)(b)
/ 37.7
(c)
98 33.0
(a)(b)
/ 38.0
(c)
99 33.4
(a)(b)
/ 38.4
(c)
100 33.7
(a)(b)
/ 38.7
(c)
63 21.2
(a)(b)
/ 26.2
(c)
64 21.6
(a)(b)
/ 26.6
(c)
65 21.9
(a)(b)
/ 26.9
(c)
66 22.2
(a)(b)
/ 27.2
(c)
67 22.6
(a)(b)
/ 27.6
(c)
68 22.9
(a)(b)
/ 27.9
(c)
69 23.3
(a)(b)
/ 28.3
(c)
72 24.3
(a)(b)
/ 29.3
(c)
55 18.5
(a)(b)
/ 23.5
(c)
73 24.6
(a)(b)
/ 29.6
(c)
56 18.9
(a)(b)
/ 23.9
(c)
74 24.9
(a)(b)
/ 29.9
(c)
57 19.2
(a)(b)
/ 24.2
(c)
75 25.3
(a)(b)
/ 30.3
(c)
58 19.5
(a)(b)
/ 24.5
(c)
76 25.6
(a)(b)
/ 30.6
(c)
59 19.9
(a)(b)
/ 24.9
(c)
77 26.0
(a)(b)
/ 31.0
(c)
60 20.2
(a)(b)
/ 25.2
(c)
78 26.3
(a)(b)
/ 31.3
(c)
61 20.5
(a)(b)
/ 25.5
(c)
79 26.6
(a)(b)
/ 31.6
(c)
62 20.9
(a)(b)
/ 25.9
(c)
80 27.0
(a)(b)
/ 32.0
(c)
70
23.6
(a)(b)
/ 28.6
(c)
71 23.9
(a)(b)
/ 28.9
(c)
81 27.3
(a)(b)
/ 32.3
(c)
82 27.6
(a)(b)
/ 32.6
(c)
83 28.0
(a)(b)
/ 33.0
(c)
84 28.3
(a)(b)
/ 33.3
(c)
85 28.7
(a)(b)
/ 33.7
(c)
86 29.0
(a)(b)
/ 34.0
(c)
87 29.3
(a)(b)
/ 34.3
(c)
88 29.7
(a)(b)
/ 34.7
(c)
89 30.0
(a)(b)
/ 35.0
(c)
51 17.2
(a)(b)
/ 22.2
(c)
52 17.5
(a)(b)
/ 22.5
(c)
53 17.8
(a)(b)
/ 22.8
(c)
54 18.2
(a)(b)
/ 23.2
(c)
39 13.1
(a)(b)
/ 18.1
(c)
40 13.5
(a)(b)
/ 18.5
(c)
41 13.8
(a)(b)
/ 18.8
(c)
42 14.1
(a)(b)
/ 19.1
(c)
43 14.5
(a)(b)
/ 19.5
(c)
44 14.8
(a)(b)
/ 19.8
(c)
45 15.1
(a)(b)
/ 20.1
(c)
46 15.5
(a)(b)
/ 20.5
(c)
47 15.8
(a)(b)
/ 20.8
(c)
48 16.2
(a)(b)
/ 21.2
(c)
49 16.5
(a)(b)
/ 21.5
(c)
50 16.8
(a)(b)
/ 21.8
(c)
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO2eq
1000
GWP × kg
=
=
+
kg
=
kg
=
GWP: xxx
R32
m Total refrigerant charge limit in the system
A
Smallest room area
min
(a) Lowest underground floor (ceiling-mounted units) (=Lowest underground floor (ceiling-mounted units))
(b) Lowest underground floor (wall-mounted units) (=Lowest underground floor (wall-mounted units))
(c) Smallest room on other floors (all units) (=Smallest room on other floors (all units))
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1B – 2020.10
4 Determine the total amount of refrigerant in the system:
Total charge=Factory charge +additional charge =3.4kg+R
(a)
The R value is calculated in "19.4To determine the additional refrigerant amount"[493].
5 The total refrigerant charge in the system MUST be less than the total
refrigerant charge limit value that is derived from the graph. If NOT, change
the installation (see choices below) and repeat all of the above steps.
1. Increase the area of smallest room.
OR
2. Decrease the piping length by changing the system layout.
OR
3. Add additional countermeasures as described in applicable legislation.
SVS output or optional output PCB for indoor unit can be used to
connect and activate the additional countermeasures (e.g. mechanical
ventilation). For more information, see "20.3To connect the external
outputs"[4108].
(a)
Installer and user reference guide
25
3 | Specific installer safety instructions
0
1
2
3
4
5
6
7
8
10.4
9.4
12
13
14
15
16
10 20 40 50
16 28
25 35 45
m (kg)
A
min
(m2)
(b)
(a)(b)
(a)
(c)
NOTICE
The total refrigerant charge amount in the system MUST always be lower than the
number of connected indoor units x15.96 [kg], with a maximum of 63.84kg.
E.g. In a system with 1 indoor unit, the maximum refrigerant charge amount is:
1x15.96=15.96kg.
Example1:
VRV system serving 6 rooms. The biggest room has an area of 60m², the smallest
room has an area of 16m². No underground floor in the building.
Use graph "(c)" to check the maximum allowed charge for a room of 16m² with a
ceiling mounted unit: 10.4kg
Maximum field piping charge=charge in system–factory charge=10.4 kg–
3.4kg=7kg
Example2:
VRV system serving 6 rooms. The biggest room has an area of 60m², the smallest
room has an area of 16m². There are multiple underground floors in the building
and the smallest room of the lowest underground floor has an area of 28m².
Use graph "(c)" to check the maximum allowed charge for a room of 16m² with a
ceiling mounted unit: 10.4kg
Use graph "(a)(b)" to check the maximum allowed charge for the smallest room
(28m²) of the lowest underground floor: 9.4kg
9.4 kg<10.4 kg, therefore the maximum field piping charge is 9.4 kg (smallest
value).
Maximum field piping charge=charge in system–factory charge=9.4kg–3.4kg=6kg
Installer and user reference guide
26
VRV 5-S system air conditioner
RXYSA4~6A7V/Y1B
4P600330-1B – 2020.10
Procedure to check if
smallest room size
meets the requirements
Start installation
Derive total charge limit from
graph for underground floor
and other floors.
See steps 2 & 3 in the above
text.
Determine smallest room area.
See step 1 in the above text.
Change installation:
1. Increase area of smallest room.
OR
2. Decrease piping length by changing
layout.
OR
3. Add additional countermeasures
as described in applicable legislation.
See step 5 in the above text.
Determine total charge amount
of the system. See step 4 in
the above text.
Total charge amount
<
Total charge limit?
A
min
[m²]
Total charge
limit [kg]
Total charge
amount [kg]
YES
NO
3 | Specific installer safety instructions
Flow chart
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1B – 2020.10
Installer and user reference guide
27
For the user
For the user
Installer and user reference guide
28
VRV 5-S system air conditioner
RXYSA4~6A7V/Y1B
4P600330-1B – 2020.10
4 User safety instructions
Always observe the following safety instructions and regulations.
In this chapter
4.1 General.................................................................................................................................................................................... 29
4.2 Instructions for safe operation............................................................................................................................................... 30
4.1 General
WARNING
If you are NOT sure how to operate the unit, contact your
installer.
WARNING
Children aged from 8 years and above and persons with
reduced physical, sensory or mental capabilities or lack of
experience and knowledge can only use this appliance if
they have been given supervision or instruction concerning
the use of the appliance by a person responsible for their
safety.
4 | User safety instructions
Children MUST NOT play with the appliance.
Cleaning and user maintenance MUST NOT be carried out
by children without supervision.
WARNING
To prevent electrical shocks or fire:
▪ Do NOT rinse the unit.
▪ Do NOT operate the unit with wet hands.
▪ Do NOT place any objects containing water on the unit.
CAUTION
▪ Do NOT place any objects or equipment on top of the
unit.
▪ Do NOT sit, climb or stand on the unit.
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1B – 2020.10
Installer and user reference guide
29
4 | User safety instructions
▪ Units are marked with the following symbol:
▪ Batteries are marked with the following symbol:
This means that electrical and electronic products may NOT be mixed with
unsorted household waste. Do NOT try to dismantle the system yourself: the
dismantling of the system, treatment of the refrigerant, of oil and of other parts
must be done by an authorized installer and must comply with applicable
legislation.
Units must be treated at a specialized treatment facility for reuse, recycling 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 installer or local authority.
This means that the batteries may NOT be mixed with unsorted household
waste. If a chemical symbol is printed beneath the symbol, this chemical symbol
means that the battery contains a heavy metal above a certain concentration.
Possible chemical symbols are: Pb: lead (>0.004%).
Waste batteries must be treated at a specialized treatment facility for reuse. By
ensuring waste batteries are disposed of correctly, you will help to prevent
potential negative consequences for the environment and human health.
4.2 Instructions for safe operation
CAUTION
▪ NEVER touch the internal parts of the controller.
▪ Do NOT remove the front panel. Some parts inside are
dangerous to touch and appliance problems may
happen. For checking and adjusting the internal parts,
contact your dealer.
WARNING
Never touch the air outlet or the horizontal blades while
the swing flap is in operation. Fingers may become caught
or the unit may break down.
Installer and user reference guide
30
WARNING
NEVER replace a fuse with a fuse of a wrong ampere
ratings or other wires when a fuse blows out. Use of wire
or copper wire may cause the unit to break down or cause
a fire.
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1B – 2020.10
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