Samsung AE RXYDEG Series User manual

AirtoWaterHeatPump
Installationmanual
Mono OutdoorUnit AE***RXYDEG / AE***RXYDGG
࡙Thank you for purchasing this Samsung Product.
࡙Before operating this unit, please read this installation manual carefully and retain it forfuture
reference.

2
Contents
Safety precautions ..........................................................................................................3
Product specications.......................................................................................................5
Outdoor unit specication...................................................................................................6
Application examples .......................................................................................................7
Main components...........................................................................................................9
Functional diagram .......................................................................................................13
Installing the unit .........................................................................................................14
Piping work ...............................................................................................................26
Wiring ....................................................................................................................32
Testing operations ........................................................................................................40
Error codes................................................................................................................42
Maintenance..............................................................................................................44
Charging refrigerant ......................................................................................................47
Troubleshooting ..........................................................................................................48
Commissioning ...........................................................................................................51
Recommissioning instructions ............................................................................................51
Correct Disposal of This Product
(Waste Electrical & Electronic Equipment)
(Applicable in countries with separate collection systems)
This marking on the product, accessories or literature indicates that the product and its electronic accessories (e.g.
charger, headset, USB cable) should not be disposed of with other household waste at the end of their working life.
To prevent possible harm to the environment or human health from uncontrolled waste disposal, please separate
these items from other types of waste and recycle them responsibly to promote the sustainable reuse of material
resources.
Household users should contact either the retailer where they purchased this product, or their local government
oce, for details of where and how they can take these items for environmentally safe recycling.
Business users should contact their supplier and check the terms and conditions of the purchase contract.This
product and its electronic accessories should not be mixed with other commercial wastes for disposal.

3
ENGLISH
Safety precautions
Carefully follow the precautions listed as below because they are essential to guarantee the safety of SAMSUNG product.
WARNING
t Always disconnect a power supply of Air-Water Heat Pump before servicing it or accessing
components inside the unit.
t Verify that installation and testing operations shall be performed by qualied personnel.
t To prevent serious damage on the system and injuries to users, precautions and other
notices shall be observed.
Warning
f Carefully read the content of this manual before installing the air to water heat pump and store the manual in a safe place
in order to be able to use it as reference after installation.
f For maximum safety, installers should always carefully read the following warnings.
f Store the provided manual in a safe location with end user after installation, and remember to hand it over to the new
owner if the Heat pump unit is sold or transferred.
f This manual explains how to install Air-Water Heat Pump.The use of other types of units with dierent control systems
may damage the units and invalidate the warranty. The manufacturer shall not be responsible for damages arising from
the use of non compliant units.
f The manufacturer shall not be responsible for damage originating from unauthorized changes or the improper
connection of electric and hydraulic lines. Failure to comply with these instructions or to comply with the requirements
set forth in the“Operating limits”table, included in the manual, shall immediately invalidate the warranty.
f Failure to comply with these instructions or to comply with the requirement on the Operating Range (Heat: -25~35°C/
Cool: 10~46°C) set forth in the Product Specication (p.5) shall immediately invalidate the warranty.
f Do not use the units if you see some damages on the units and recognize something bad such as loud noisy, smell of
burning.
f In order to prevent electric shocks, res or injuries, always stop the unit, disable the protection switch and contact
SAMSUNG’s technical support if the unit produces smoke, if the power cable is hot or damaged or if the unit is very noisy.
f Always remember to inspect the unit, electric connections, refrigerant tubes and protections regularly.These operations
shall be performed by qualied personnel only.
f The unit contains moving parts and electrical parts, which should always be kept out of the reach of children.
f Do not attempt to repair, move, alter or reinstall the unit by unauthorized personnel, these operations may cause product
damage, electric shocks and res.
f Do not place containers with liquids or other objects on the unit.
f All the materials used for the manufacture and packaging of the air to water heat pump are recyclable.
f The packing material and exhaust batteries of the remote controller(optional) must be disposed of in accordance with
local regulations.
f The air to water heat pump contains a refrigerant that has to be disposed of as special waste. At the end of its life cycle,
the heat pump must be disposed of in authorized centers or returned to the retailer so that it can be disposed of correctly
and safely.
f Wear protective gloves to unpack, move, install, and service the unit to avoid your hands being injured by the edge of the
parts.
f Do not touch the internal parts (water pipes, refrigerant pipes, heat exchangers, etc) while running the units. And if you
need to adjust and touch the units, have enough time for the unit can be cooled and be sure to wear protective gloves.
f In case of refrigerant leakage, try to avoid getting in contact with the refrigerant because this could result in severe
wounds.
f When you install the Air to water heat pump in a small room, you must consider a proper ventilation to prevent a leakage
level within the maximum permissible limit.
- In that case, you may die from suocation by some possibility.

4
f Make sure to safely dispose of packing materials. Packing materials, such as nails and other metal or wooden pallets may
cause children get injured.
f Inspect the product shipped and check if damaged during transport. If the product has some damages, DO NOT INSTALL
and immediately discuss about the damages with the carrier or retailer (if the installer or the authorized technician has
collected the material from the retailer.)
f Our units shall be installed in compliance with the spaces described in the installation manual, to ensure accessibility
from both sides and allow repairs or maintenance operations to be carried out. If the units installed without complying
with procedures described in manual, additional expenses can be asked because special harnesses, ladders, scaolding
or any other elevation system for repair service will NOT be considered part of the warranty and will be charged to the
end customer.
f Always make sure that the power supply is compliant with local safety standards.
f Verify that the voltage and frequency of the power supply comply with the specications and input power is sucient to
ensure the operation of any other domestic appliance connected to the same electric lines. Always verify that the cut-o
and protection switches are suitably selected.
f Always verify that electric connections (cable entry, section of leads, protections…) are compliant with the electric
specications and with the instructions provided in the wiring scheme. Always verify that all connections comply with
the standards applicable to the installation of air to water heat pumps. Devices disconnected from the power supply
should be completely disconnected in the condition of overvoltage category.
f Do not connect the earth wire to the gas pipe or water pipe, lighting rod, surge absorber, or telephone earth wire. If
earthing is not complete, it may cause an electric shock or re.
f Be sure to install both an earth leakage detector and circuit breaker with specied capacity in accordance with relevant
local and national regulations.
- If it is not installed properly, it may cause electric shocks and re.
f Make sure that the condensed water runs well out of the unit at low ambient temperature. Drain pipe and cond heater
can frost/ice can not grow. If drain work is not eective for releasing condensed water, it can make the units get damaged
by massive ice and system can be stop , covered by ice.
f Install the power cable and communication cable of the indoor and outdoor unit at least 1m away from the electric
appliance.
f Protect the unit from rats or small animals. If an animal makes a contact with the electric parts, it can cause malfunctions,
smoke or re. Please instruct the customer to keep the area around the unit clean.
f Do not disassemble and alter the heater at your own discretion.
f Be sure not to perform power cable modication, extension wiring, and multiple wire connection.
- It may cause electric shock or re due to poor connection, poor insulation, or current limit override.
- When extension wiring is required due to power line damage, refer to“How to connect your extended power cables”in
the installation manual.
f Do not use means to accelerate the defrost operation or to clean, other than those recommended by Samsung.
f Do not pierce or burn.
f Be aware that refrigerants may not contain an odour.
Safety precautions

5
ENGLISH
Product specications
Product line-up
Line-up Remark
Heat pump units
Chassis
-
Model name AE080RXYDEG
AE080RXYDGG
AE120RXYDEG
AE120RXYDGG
AE160RXYDEG
AE160RXYDGG
Auxiliary parts
Control kit
MIM-E03CN Requisite
Accessories
f Keep supplied accessories until the installation is nished.
f Hand the installation manual over to the customer after nishing installation.
f The quantities are indicated in parentheses.
Installation manual (2) Drain plug (1) Rubber Leg(4) Drain cap (3)

6
Outdoor unit specication
Type Unit AE080RXYDEG AE120RXYDEG AE160RXYDEG
Power source - 1Φ, 220~240VAC 50Hz
3Φ, 380~415VAC 50Hz
1Φ, 220~240VAC 50Hz
3Φ, 380~415VAC 50Hz
1Φ, 220~240VAC 50Hz
3Φ, 380~415VAC 50Hz
Refrigerant g 1,150 (R-32) 2,200 (R-32) 2,200 (R-32)
Noise
(Heat/Cool, Pressure) dB(A) 48/48 50/50 52/54
Water connection
(In/Out) Inch 1.0 1.0 1.0
Leaving water
temperature °C Heating : 25~65 Cooling : 5~25
Heating : 25~65
Cooling : 5~25
Heating : 25~65
Cooling : 5~25
Operating range
(Heat/Cool) °C -25~35/10~46 -25~35/10~46 -25~35/10~46
Weight (net/gross) kg 76.0/84.5 110/119 110/119
Size (WxHxD, net) mm 940 x 998 x 330 940 x 1,420 x 330 940 x 1,420 x 330
Type Unit AE080RXYDGG AE120RXYDGG AE160RXYDGG
Power source - 1Φ, 220~240VAC 50Hz
3Φ, 380~415VAC 50Hz
1Φ, 220~240VAC 50Hz
3Φ, 380~415VAC 50Hz
1Φ, 220~240VAC 50Hz
3Φ, 380~415VAC 50Hz
Refrigerant g 1,150 (R-32) 2,200 (R-32) 2,200 (R-32)
Noise
(Heat/Cool, Pressure) dB(A) 48/48 50/50 52/54
Water connection
(In/Out) Inch 1.0 1.0 1.0
Leaving water
temperature °C Heating : 25~65 Cooling : 5~25
Heating : 25~65
Cooling : 5~25
Heating : 25~65
Cooling : 5~25
Operating range
(Heat/Cool) °C -25~35/10~46 -25~35/10~46 -25~35/10~46
Weight (net/gross) kg 75.0/83.5 111/120 111/120
Size (WxHxD, net) mm 940 x 998 x 330 940 x 1,420 x 330 940 x 1,420 x 330
❋ At the temperature -25 °C ~ -20 °C, operation is available but capacity cannot be guaranteed.

7
ENGLISH
Application examples
t The application examples given below are for illustration purposes only.
t When the SAMSUNG Air-to-Water Heat Pump system is used in series with another heat source (e.g. gas
boiler), ensure that the return water temperature not exceed 65°C.
t The unit is only to be used in a closed water system. Application in an open water circuit can lead to excessive
corrosion of the water piping.
t SAMSUNG can not be put responsible for incorrect or unsafe situations in the water system. Make sure that the
boiler, radiators, convectors, solar collectors, UFHs, FCUs, additional pumps, pipings, and controls in the water
system are in accordance with relevant local laws and regulations under the installer's responsibility.
t By-pass valve shall be installed for space heating loops. When one of loops or all loops are closed , water ow
rate could be low condition.To keep ow rate approximately and prevent ow stop, the by-pass valve shall be
installed between supply collector and return collector.
t SAMSUNG shall not be held liable for any damage resulting from not observing this rule.
t SAMSUNG do not provide specic water system components such as Pressure relief valve, Air vent valve, buer
tank and etc. Installers and end-users shall consider how to install the above designated components in overall
water system depending on the installation conditions. If the components are not installed in appropriate
location, the water system can not be operated as designed.
WARNING
Application #1
Mono outdoor + Control kit
Outdoor Mechanical room Indoor
Solar collector
Solar signal input
DHW sensor input
& Booster heater output
Back up boiler
operation output
Booster heater Zone Controller #1 (Radiators)
Zone Controller #2 (UFHs)
Wired controller
(provided by SAMSUNG)
Shut-O &
Drain valve
Strainer
Pressure
relief valve
3.0 bar
Air-vent
Air-vent
Bypass
valve
Bypass valve
Air-vent
50 ~ 55°C
35°C
45°C
Primary
pump Expansion
tank
3-way valve
Balancing Vessel
Mixing valve
Secondary
Pump #1
Drain
Control Kit
(provided by SAMSUNG)
DHW tank
Outdoor unit
Solar pump
Supply header
Supply header
Return header
Return header
Under- Floor Heating Coils
Radiators or convectors
TW4

8
Application examples
Application #2
Mono outdoor + Tank Integrated Hydro Unit
Outdoor unit
[ Supply Scope ]
Tank Integrated Hydro Unit
Balancing Vessel
Back up Boiler
Operation
Back-up Boiler
Room Controller
Zone Control
Supply Header
Return Header
Supply Header
Return Header
Under-Floor Heating Coils
Radiators or Convectors
45°C
35°C
Water
pump #2
Water
pump #1
Outdoor IndoorMechanical Room
Tw2_z1
Tw2_z2

9
ENGLISH
Main components
Dimensions(Overall)
Heat pump for R-32.
1-Fan chassis
f AE080RXYD**
620
330
360
384
940
973
998
(Unit : mm)
2-Fan chassis
f AE120RXYD**/AE160RXYD**
620
330
360
384
940
1395
1420
(Unit : mm)

10
Main components
Dimensions (Water pipe)
AE080RXYD** AE120RXYD**/AE160RXYD**
513.4
244.4
WATER OUT
WATER IN
151.5
83.5
WATER OUT
WATER IN
(Unit : mm) (Unit : mm)

11
ENGLISH
AE080RXYD**
①
②
③
NO. Name Note.
①PHE Danfoss, H30L series
②Base heater SUS316L, 150W
③Water tting BSPP 1" Male

12
Main components
AE120RXYD**/AE160RXYD**
①
②
④
⑤
③
NO. Name Note.
①PHE Danfoss, B3-030 series
②Base heater SUS316L, 150W
③Water hose in Rubber hose
④Water hose out Rubber hose
⑤Water tting BSPP 1" Male

13
ENGLISH
Functional diagram
PHE
T/S #3
Charging
port
Charging
port
4WAY
v/v
T/S #4
Comp
Filter
HP s/w
Filter
Exp. v/v
Accum T/S #5
T/S #6
T/S #2(TW2)
T/S #1(TW1)
Part Description
PHE Plate heat exchanger
T/S #1 For water inlet temp sensor
T/S #2 For water outlet temp sensor
T/S #3 For PHE temp sensor
T/S #4 For discharge temp
T/S #5 For cond temp
T/S #6 For ambient temp sensor
Charging port For refrigerants
Accum Accumulator

14
Installing the unit
Moving the outdoor unit
f Select the moving route in advance.
f Be sure that moving route is safe from weight of the outdoor unit.
f Do not slant the product more than 30˚when carrying it. (do not lay the product down sideways)
f The surface of the heat exchanger is sharp. Be carefule not to be injured while moving and installing.
Moving the outdoor unit by wire rope
f Fasten the outdoor unit by two 8m or longer wire ropes as shown at the
gure.To prevent from damage or scratches, insert a piece of cloth between
the outdoor unit and rope, then move the unit.
Plate protection
cloth
Wire rope
❋ The appearance of the unit may be
dierent from the picture depending
on the model.
Moving the outdoor unit with a fork lift
f Insert the fork into the wooden pallet at the bottom of the outdoor unit
carefully. Be careful that the fork does not damage the outdoor unit.
Wooden pallet
Fork lift

15
ENGLISH
Deciding on where to install the outdoor unit
Decide the installation location regarding the following condition and obtain the user’s approval.
f The outdoor unit must not be placed on its side or upside down, as the compressor lubrication oil will run into the cooling
circuit and seriously damage the unit.
f Choose a location that is dry and sunny, but not exposed to direct sunlight or strong winds.
f Do not block any passageways or thoroughfares.
f Choose a location where the noise of the Air toWater Heat Pump when running and the discharged air do not disturb
any neighbours.
f Choose a position that enables the pipes and cables to be easily connected to the other hydrauric system.
f Install the outdoor unit on a at, stable surface that can support its weight and does not generate any unnecessary noise
and vibration.
f Position the outdoor unit so that the air ow directly stream towards the open area.
f Place the outdoor unit where there are no plants and animals because they may cause malfunction of outdoor unit.
f Maintain sucient clearance around the outdoor unit, especially from a radio, computer, stereo system, etc.
Installation Guide at the seashore
Make sure to follow below guides when installing at the seashore.
1. Do not install the product in a place where it is directly exposed to sea water and sea breeze.
- Make sure to install the product behind a structure (such as building) that can block see breeze.
- Even when it is inevitable to install the product in seashore, make sure that product is not directly exposed to sea
breeze by installing a protection wall.
2. Consider that the salinity particles clinging to the external panels should be suciently washed out.
3. Because the residual water at the bottom of the outdoor unit signicantly promotes corrosion,
make sure that the slope does not disturb drainage.
- Keep the oor level so that rain does not accumulate.
- Be careful not to block the drain hole due to foreign substance
4. When product is installed in seashore, periodically clean it with water to remove attached salinity.
5. Make sure to install the product in a place that provides smooth water drainage. Especially, ensure that the base part has
good drainage.
6. If the product is damaged during the installation or maintenance, make sure to repair it.
7. Check the condition of the product periodically.
- Check the installation site every 3 months and perform anti-corrosion treatment such as R-Pro supplied by SAMSUNG
(Code : MOK-220SA) or commercial water repellent grease and wax, etc., based on the product condition.
- When the product is to be shut down for a long period of time, such as o-peak hours, take appropriate measures like
covering the product.
8. If the product installed within 500m of seashore, special anti-corrosion treatment is required.
❋ Please contact your local SAMSUNG representative for further details.
Sea
Sea breeze
Outdoor
unit

16
Installing the unit
Sea
Sea breeze
Outdoor
unit
Protection wall
Sea
Sea breeze
Outdoor
unit
Protection wall should be constructed with a solid material that
can block the sea breeze and the height and width of the wall
should be 1.5 times larger than the size of the outdoor unit. (You
must secure more than 700mm of space between the protection
wall and the outdoor unit for air circulation.)
t Depending on the condition of power supply, unstable power or voltage may cause malfunction of the parts or
control system. (At the ship or places using power supply from electric generator, etc).
CAUTION
f Do not install the Air to Water Heat Pump in following places.
t The place where there is mineral oil or arsenic acid. There is a chance that parts may get damaged due to burned resin.
The capacity of the heat exchanger may reduce or the Air to Water Heat pump may be out of order.
t The place where corrosive gas such as sulfurous acid gas generates from the vent pipe or air outlet. The copper pipe or
connection pipe may corrode and refrigerant may leak.
t The place where there is a danger of existing combustible gas, carbon ber or ammable dust.The place where thinner
or gasoline is handled.
t This device must be installed according to the national electrical rules.
t With an outdoor unit having net weight upper than 60kg, we suggest do not install it suspended on wall, but
considering oor standing one.
CAUTION
f If the outdoor unit is installed at a height, ensure that its base is rmly xed in position.
f Make sure that the water dripping from the drain hose runs away correctly and safely.
f When you install the outdoor unit at wayside, you should install it above 2m height or make sure that the heat from the
outdoor unit shouldn't be in direct contact with passersby. (The ground for application :The revision of regulation for
facility in building by the law of the Ministry of Construction and Transportation.
f While in installation or relocation of the product, do not mix the refrigerant with other gases including air or unspecied
refrigerant. Failure to do so may cause pressure increase to result in rupture or injury.
f Do not cut or burn the refrigerant container or pipings.
f Use clean parts such as manifold gauge, vacuum pump, and charging hose for the refrigerant.
f Installation must be carried out by qualied personnel for handling the refrigerant. Additionally, reference the regulations
and laws.
f Be careful not to let foreign substances (lubricating oil, refrigerant other than R-32, water, etc.) enter the pipings.
f When mechanical ventilation is required, ventilation openings shall be kept clear of obstruction.
f For disposal of the product, follow the local laws and regulations.
f Do not work in a conned place.
f The work area shall be blocked.
f The refrigerant pipings shall be installed in the position where there are no substances that may result in corrosion.

17
ENGLISH
f The following checks shall be performed for installation:
- The ventilation devices and outlets are operating normally and are not obstructed.
- Markings and signs on the equipment shall be visible and legible.
f Upon leakage of the refrigerant, ventilate the room. When the leaked refrigerant is exposed to ame, it may cause
generation of toxic gases.
f Make sure that the work area is safe from ammable substances.
f To purge air in the refrigerant, be sure to use a vacuum pump.
f Note that the refrigerant has no odour.
f The units are not explosion proof so they must be installed with no risk of explosion.
f This product contains uorinated gases that contribute to global greenhouse eect. Accordingly, do not vent gases into
the atmosphere.
f For installation with handling the refrigerant(R-32), use dedicated tools and piping materials.
f Servicing and installation shall be performed as recommended by the manufacturer. In case other skilled persons are
joined for servicing, it shall be carried out under supervision of the person who is competent in handling ammable
refrigerants.
f For servicing the units containing ammable refrigerants, safety checks are required to minimise the risk of ignition.
f Servicing shall be performed following the controlled procedure to minimize the risk of ammable refrigerant or gases.
f Do not install where there is a risk of combustible gas leakage.
f Do not place heat sources.
f Be cautious not to generate a spark as follows:
- Do not remove the fuses with power on.
- Do not disconnect the power plug from the wall outlet with power on.
- It is recommended to locate the outlet in a high position. Place the cords so that they are not tangled.
f If the indoor unit is not R-32 compatible, an error signal appears and the unit will not operate.
f After installation, check for leakage.Toxic gas may be generated and if it comes into contact with an ignition source such
as fan heater, stove, and cooker. cylinders, make sure that only the refrigerant recovery cylinders are used.
f Never directly touch any accidental leaking refrigerant.
f This could result in severe wounds caused by frostbite.

18
Installing the unit
Preparation of re extinguisher
f If a hot work is to be done, an appropriate re extinguishing equipment should have been available.
f A dry powder or CO re extinguisher shall be equipped near the charging area.
Ignition sources free
f Make sure to store the units in a place without continuously operating ignition sources (for example, open ames, an
operating gas appliance or an operating electric heater).
f The service engineers shall not use any ignition sources with the risk of re or explosion.
f Potential ignition sources shall be kept away from the work area where the ammable refrigerant can possibly be
released to the surrounding.
f The work area should be checked to ensure that there are no ammable hazards or ignition risks. The“No Smoking”sign
shall be attached.
f Under no circumstances shall potential sources of ignition be used while in detection of leakage.
f Make sure that the seals or sealing materials have not degraded.
f Safe parts are the ones with which the worker can work in a ammable atmosphere. Other parts may result in ignition
due to leakage.
f Replace components only with parts specied by Samsung. Other parts may result in the ignition of refrigerant in the
atmosphere from a leak.
Area ventilation
f Make sure that the work area is well ventilated before performing a hot work.
f Ventilation shall be made even during the work.
f The ventilation should safely disperse any released gases and preferably expel them into the atmosphere.
f Ventilation shall be made even during the work.
Leakage detection methods
f The leakage detector shall be calibrated in a refrigerant-free area.
f Make sure that the detector is not a potential source of ignition.
f The leakage detector shall be set to the LFL (lower ammability limit).
f The use of detergents containing chlorine shall be avoided for cleaning because the chlorine may react with the
refrigerant and corrode the pipings.
f If leakage is suspected, naked ames shall be removed.
f If a leakage is found while in brazing, the entire refrigerant shall be recovered from the product or isolated (e.g. using
shut-o valves). It shall not be directly released to the environment. Oxygen free nitrogen (OFN) shall be used for purging
the system before and during the brazing process.
f The work area shall be checked with an appropriate refrigerant detector before and during work.
f Ensure that the leakage detector is appropriate for use with ammable refrigerants.

19
ENGLISH
Labelling
f The parts shall be labelled to ensure that they have been decommissioned and emptied of refrigerant.
f The labels shall be dated.
f Make sure that the labels are axed on the system to notify it contains ammable refrigerant.
Recovery
f When removing refrigerant from the system for servicing or decommissioning, it is recommended to remove the entire
refrigerant.
f When transferring refrigerant into cylinders, make sure that only the refrigerant recovery cylinders are used.
f All cylinders used for the recovered refrigerant shall be labelled.
f Cylinders shall be equipped with pressure relief valves and shut-o valves in a proper order.
f The recovery system shall operate normally according to the specied instructions and shall be suitable for refrigerant
recovery.
f In addition, the calibration scales shall operate normally.
f Hoses shall be equipped with leak-free disconnect couplings.
f Before starting the recovery, check for the status of the recovery system and sealing state. Consult with the manufacturer
if suspected.
f The recovered refrigerant shall be returned to the supplier in the correct recovery cylinders with theWasteTransfer Note
attached.
f Do not mix refrigerants in the recovery units or cylinders.
f If compressors or compressor oils are to be removed, make sure that they have been evacuated to the acceptable level to
ensure that ammable refrigerant does not remain in the lubricant.
f The evacuation process shall be performed before sending the compressor to the suppliers.
f Only the electrical heating to the compressor body is allowed to accelerate the process.
f Oil shall be drained safely from the system.
f Never install a motor-driven equipment to prevent ignition.
f Empty recovery cylinders shall be evacuated and cooled before recovery.
Installation location requirements
f The outdoor unit shall be installed in an open space that is always ventilated.
f The local gas regulations shall be observed.
f For installation inside a building (this applies either to indoor or outdoor units installed inside) a minimum room oor
area of space conditioned is mandatory according to IEC 60335-2-40:2018 (see the reference table into either the indoor
or outdoor unit installation manual).
f To handle, purge, and dispose the refrigerant, or break into the refrigerant circuit, the worker should have a certicate
from an industry-accredited authority.

20
Installing the unit
Space requirements for outdoor unit
When installing 1 outdoor unit
(Unit : mm)
300 or more
1,500 or more
❋ When the air outlet is opposite the wall ❋ When the air outlet is towards the wall
300 or more
300 or more 600 or more
1,500 or more
2,000 or more
❋ When 3 sides of the outdoor unit are blocked by the
wall
❋ The upper part of the outdoor unit and the air outlet
is towards the wall
600 or more
300 or more
1,500 or more 300 or more
❋ The upper part of the outdoor unit and the air outlet
is opposite the wall
❋ When front and rear side of the outdoor unit is
towards the wall