20.3 Wiring diagram: Outdoor unit .................................................... 43
21 Disposal45
1About the documentation
The original documentation is written in English. All other languages
are translations.
2Specific 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 "12.1Preparing the installation
site"[423])
WARNING
Follow the service space dimensions in this manual for
correct installation of the unit. See "20.1 Service space:
Outdoor unit"[442].
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).
1.1About this document
Target audience
Authorised installers + end users
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.
Documentation set
This document is part of a documentation set. The complete set
consists of:
▪ 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.
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 "12.2Opening and closing
the unit"[423])
DANGER: RISK OF BURNING/SCALDING
DANGER: RISK OF ELECTROCUTION
Mounting the outdoor unit (see "12.3Mounting the outdoor
unit"[424])
WARNING
Fixing method of the outdoor unit MUST be in accordance
with the instructions from this manual. See "12.3Mounting
the outdoor unit"[424].
Connecting the refrigerant piping (see "13.2Connecting the
refrigerant piping"[426])
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.
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600329-1C – 2020.10
Installation and operation manual
7
2 Specific installer safety instructions
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.
CAUTION
NEVER install a drier to this unit to guarantee its lifetime.
The drying material may dissolve and damage the system.
Charging refrigerant (see "14Charging refrigerant"[428])
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 "14 Charging
refrigerant"[428].
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.
Electrical installation (see "15Electrical installation"[431])
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
"15Electrical installation"[431].
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.
CAUTION
Do NOT push or place redundant cable length in the unit.
Commissioning (see "18Commissioning"[438])
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.
Troubleshooting (see "19Troubleshooting"[439])
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.
Installation and operation manual
8
VRV 5-S system air conditioner
RXYSA4~6A7V/Y1B
4P600329-1C – 2020.10
2 Specific installer safety instructions
2.1Instructions 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 well-ventilated 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 11] 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.
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 11] 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.
2.1.1Installation 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.
2.1.2System 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).
For more information about the SVS output, see "15.4 To connect
the external outputs"[433].
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 11] 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.
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600329-1C – 2020.10
Installation and operation manual
9
2 Specific installer safety instructions
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Piping requirements
Piping must be installed according to instructions given in "13Piping
installation" [4 25]. Only mechanical joints (e.g. braze+flare
connections) that are compliant with the latest version of ISO14903
can be used.
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 "13.3Checking the
refrigerant piping"[428].
Remote controller requirements
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 65 dB (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 "15.3 To
connect the electrical wiring to the outdoor unit"[431].
Note: Depending on configuration, the remote controller is operable
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)
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.
ModeFunction
Fully functionalThe controller is fully functional. All normal
For installation of the remote controller, please refer to the
installation and operation manual delivered with the remote
Alarm onlyThe controller only acts as leak detection
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.
SupervisorThe controller only acts as leak detection
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.
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 OKOKCase
1
functionality is available. This controller can
be master or slave.
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.
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.
Remote controller is not R32 safety system
compatible
Installation and operation manual
10
VRV 5-S system air conditioner
RXYSA4~6A7V/Y1B
4P600329-1C – 2020.10
2 Specific installer safety instructions
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A
nvmin
≥ 20 mm
≥ 50% A
nvmin
≤ 100 mm
1500
mm
300
mm
200
mm
≥ 20 mm
NOT OKOKCase
2
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.
4
In case of two R32 safety system compatible
remote controllers, at least one remote controller
should be in the room of the indoor.
5
Group control system is not allowed.
Each indoor unit should be connected to a
separate remote controller
6
In particular situations it is mandatory to install a
remote controller at a supervised location
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
2.1.3To determine the charge limitations
1 Determine the area of the smallest room in order to derive the
total refrigerant charge limit in the system:
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.
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
min
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.
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600329-1C – 2020.10
Installation and operation manual
11
2 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
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO2eq
1000
GWP × kg
=
=
+
kg
=
kg
=
GWP: xxx
R32
For the lower opening:
▪ The opening cannot go outdoors
▪ The opening cannot be closed
▪ The lower opening must be ≥0.012m² (A
▪ The area of any openings above 300 mm from the floor
does not count when determining A
▪ At least 50% of A
is less than 200 mm above the
nvmin
nvmin
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
▪ The bottom of the upper opening must be ≥1500mm
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:
▪ installation height is1.8≤x<2.2m, then use the charge limit of
the graph for wall-mounted units.
▪ installation height is ≥2.2m, then use the charge limit of the
Note: The derived charge value should be rounded down.
4 Determine the total amount of refrigerant in the system:
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 (see "figure4"[43] at the beginning of
this manual) to determine the total refrigerant charge limit in the
system.
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.
Installation and operation manual
12
Total charge=Factory charge +additional charge =3.4kg+R
(a)
The R value is calculated in "14.2To determine the additional
refrigerant amount"[429].
(a)
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 "15.4To connect the external
outputs"[433].
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 5-S system air conditioner
RXYSA4~6A7V/Y1B
4P600329-1C – 2020.10
2 Specific installer safety instructions
0
1
2
3
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8
10.4
9.4
12
13
14
15
16
10204050
1628
253545
m (kg)
A
min
(m2)
(b)
(a)(b)
(a)
(c)
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
VRV system serving 6 rooms. The biggest room has an area of
60m², the smallest room has an area of 16m². No undergroundfloor 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=10.4kg–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 multipleunderground 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
9.4kg<10.4kg, therefore the maximum field piping charge is 9.4kg
(smallest value).
Maximum field piping charge=charge in system–factory
charge=9.4kg–3.4kg=6kg
Flow chart
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600329-1C – 2020.10
Installation and operation manual
13
3 User safety instructions
For the user
3User safety instructions
Always observe the following safety instructions and regulations.
3.1General
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.
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.
▪ Units 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.
▪ Batteries are marked with the following symbol:
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.
3.2Instructions 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
▪ Do NOT sit, climb or stand on the
unit.
Installation and operation manual
14
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.
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
4P600329-1C – 2020.10
4 About the system
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WARNING
▪ Do NOT modify, disassemble,
remove, reinstall or repair the unit
yourself as incorrect dismantling or
installation may cause an electric
shock or fire. Contact your dealer.
▪ In case of accidental refrigerant
leaks, make sure there are no naked
flames. The refrigerant itself is
entirely safe, non-toxic and mildly
flammable, but it will generate toxic
gas when it accidentally leaks into a
room where combustible air from fan
heaters, gas cookers, etc. is present.
Always have qualified service
personnel confirm that the point of
leakage has been repaired or
corrected before resuming operation.
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
WARNING
The unit is equipped with a refrigerant
leak detection system for safety.
To be effective, the unit MUST be
electrically powered at all times after
installation, except for maintenance.
4About the system
The VRV 5-S uses R32 refrigerant which is rated as A2L and is
mildly flammable. For compliance with the requirements for
enhanced tightness refrigerating systems and IEC60335-2-40 the
installer must take extra measures. For more information, see
"2.1Instructions for equipment using R32 refrigerant"[49].
The indoor unit part of this VRV 5-S heat pump system can be used
for heating/cooling applications. The type of indoor unit which can be
used depends on the outdoor units series.
WARNING
▪ Do NOT modify, disassemble, remove, reinstall or
repair the unit yourself as incorrect dismantling or
installation may cause an electric shock or fire. Contact
your dealer.
▪ In case of accidental refrigerant leaks, make sure there
are no naked flames. The refrigerant itself is entirely
safe, non-toxic and mildly flammable, but it will
generate toxic gas when it accidentally leaks into a
room where combustible air from fan heaters, gas
cookers, etc. is present. Always have qualified service
personnel confirm that the point of leakage has been
repaired or corrected before resuming operation.
NOTICE
Do NOT use the system for other purposes. In order to
avoid any quality deterioration, do NOT use the unit for
cooling precision instruments, food, plants, animals, or
works of art.
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).
NOTICE
For future modifications or expansions of your system:
A full overview of allowable combinations (for future
system extensions) is available in technical engineering
data and should be consulted. Contact your installer to
receive more information and professional advice.
WARNING: MILDLY FLAMMABLE
MATERIAL
4.1System layout
The refrigerant inside this unit is mildly
flammable.
WARNING
Stop operation and shut off the
power if anything unusual occurs
(burning smells etc.).
Leaving the unit running under such
circumstances may cause breakage,
electric shock or fire. Contact your
dealer.
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600329-1C – 2020.10
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)
Installation and operation manual
15
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