Samsung AE***JXYDGH Series, AE***JXYDEH Series Installation Manual
SAMSUNG ELECTRONICS CO., LTD.
107, Hanamsandan 6beon-ro, Gwangsan-gu, Gwangju-si, Korea 506-723
Samsung Electronics (UK) Ltd, Euro QA Lab.
Blackbushe Business Park. Saxony Way, Yateley, Hampshire. GU46 6GG United Kingdom
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AEJXYDGH
AEJXYDEH
Air to Water Heat Pump
Mono Outdoor Unit
installation manual
imagine the possibilities
Thank you for purchasing this Samsung product.
EN
ES
FR
IT
PT DE
DB68-05387A-01
This manual is made with 100% recycled paper.
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2
Contents
Safety precautions ..........................................................................................................3
Product specications.......................................................................................................5
Outdoor unit specication...................................................................................................6
Application examples .......................................................................................................7
Main components...........................................................................................................8
Functional diagram .......................................................................................................12
Installing the unit .........................................................................................................13
Piping work ...............................................................................................................21
Wiring ....................................................................................................................27
Testing operations ........................................................................................................34
Error codes................................................................................................................ 36
Maintenance.............................................................................................................. 38
Charging refrigerant ......................................................................................................41
Troubleshooting ..........................................................................................................42
Commissioning ...........................................................................................................45
Recommissioning instructions ............................................................................................45
COMMISSION REGULATION (EU) No 813/2013 I)............................................................................46
COMMISSION DELEGATED REGULATION (EU) No 811/2013 i) ...............................................................66
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ENGLISH
Safety precautions
Carefully follow the precautions listed as below because they are essential to guarantee the safety of SAMSUNG product.
WARNING
• Always disconnect a power supply of Air-Water Heat Pump before servicing it or accessing
components inside the unit.
• Verify that installation and testing operations shall be performed by qualied personnel.
• To prevent serious damage on the system and injuries to users, precautions and other
notices shall be observed.
Warning
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.
For maximum safety, installers should always carefully read the following warnings.
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.
This manual explains how to install Air-Water Heat Pump. The use of other types of units with dierent 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.
This product has been determined to be in compliance with the Low Voltage Directive (2006/95/EC), the Electromagnetic
Compatibility Directive (2004/108/EC) and the Machinery Directive (2006/42/EC) of the European Union.
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.
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 Specication (p.5) shall immediately invalidate the warranty.
Do not use the units if you see some damages on the units and recognize something bad such as loud noisy, smell of
burning.
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.
Always remember to inspect the unit, electric connections, refrigerant tubes and protections regularly. These operations
shall be performed by qualied personnel only.
The unit contains moving parts and electrical parts, which should always be kept out of the reach of children.
Do not attempt to repair, move, alter or reinstall the unit by unauthorized personnel, these operations may cause product
damage, electric shocks and res.
Do not place containers with liquids or other objects on the unit.
All the materials used for the manufacture and packaging of the air to water heat pump are recyclable.
The packing material and exhaust batteries of the remote controller(optional) must be disposed of in accordance with
local regulations.
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.
Wear protective gloves to unpack, move, install, and service the unit to avoid your hands being injured by the edge of the
parts.
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.
In case of refrigerant leakage, try to avoid getting in contact with the refrigerant because this could result in severe
wounds.
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 suocation by some possibility.
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Make sure to safely dispose of packing materials. Packing materials, such as nails and other metal or wooden pallets may
cause children get injured.
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.)
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, scaolding
or any other elevation system for repair service will NOT be considered part of the warranty and will be charged to the
end customer.
Always make sure that the power supply is compliant with local safety standards.
Verify that the voltage and frequency of the power supply comply with the specications and input power is sucient 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.
Always verify that electric connections (cable entry, section of leads, protections…) are compliant with the electric
specications 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.
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.
Be sure to install both an earth leakage detector and circuit breaker with specied capacity in accordance with relevant
local and national regulations.
- If it is not installed properly, it may cause electric shocks and re.
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 eective for releasing condensed water, it can make the units get damaged
by massive ice and system can be stop , covered by ice.
Install the power cable and communication cable of the indoor and outdoor unit at least 1m away from the electric
appliance.
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.
Do not disassemble and alter the heater at your own discretion.
Safety precautions
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ENGLISH
Product specications
Product line-up
Line-up Remark
Heat pump units
Chassis
-
Model name
AE090JXYDEH
AE090JXYDGH
AE120JXYDEH
AE120JXYDGH
AE140JXYDEH
AE140JXYDGH
AE160JXYDEH
AE160JXYDGH
Auxiliary parts
Control kit
MIM-E03AN Requisite
Accessories
Keep supplied accessories until the installation is nished.
Hand the installation manual over to the customer after nishing installation.
The quantities are indicated in parentheses.
Installation manual (1) Rubber Leg(4)
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Outdoor unit specication
Type Unit
AE090JXYDEH
AE090JXYDGH
AE120JXYDEH
AE120JXYDGH
AE140JXYDEH
AE140JXYDGH
AE160JXYDEH
AE160JXYDGH
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
1Φ, 220~240VAC 50Hz
3Φ, 380~415VAC 50Hz
Refrigerant g
1,400(R-410A)
1,500(R-410A)
2,600(R-410A) 2,600(R-410A) 2,600(R-410A)
Noise
(Heat/Cool, Pressure)
dB(A) 48/48 50/50 51/52 52/54
Water connection
(In/Out)
Inch 1.0 1.0 1.0 1.0
Leaving water
temperature
°C
Cooling : 5~25
Heating : 25~55
Cooling : 5~25
Heating : 25~55
Cooling : 5~25
Heating : 25~55
Cooling : 5~25
Heating : 25~55
Operating range
(Heat/Cool)
°C -25~35/10~46 -25~35/10~46 -25~35/10~46 -25~35/10~46
Weight (net/gross) kg 76/84 108/118 108/118 108/118
Size (WxHxD, net) mm 940 x 998 x 330 940 x 1,420 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.
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ENGLISH
Application examples
• The application examples given below are for illustration purposes only.
• 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 55°C.
• 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.
• 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.
• 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.
• SAMSUNG shall not be held liable for any damage resulting from not observing this rule.
• SAMSUNG do not provide specic water system components such as Pressure relief valve, Air vent valve, buer
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
Mixing Tank
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
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Main components
Dimensions(Overall)
Heat pump for R-410A.
1-Fan chassis
AE090JXYD
620
330
360
384
940
973
998
(Unit : mm)
2-Fan chassis
AE120JXYD/AE140JXYD/AE160JXYD
620
330
360
384
940
1395
1420
(Unit : mm)
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ENGLISH
Dimensions (Water pipe)
AE090JXYD AE120JXYD/AE140JXYD/AE160JXYD
513.4
151.5
244.4
RC090MHX
RC120MHX/RC140MHX/RC160MHX
WATER OUT
WATER IN
151.5
83.5
WATER OUT
WATER IN
(Unit : mm) (Unit : mm)
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Main components
AE090
①
②
③
NO. Name Note.
①
PHE Danfoss, H30L series
②
Base heater SUS316L, 150W
③
Water tting BSPP 1" Male
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ENGLISH
AE120/AE140/AE160
①
②
④
⑤
③
NO. Name Note.
①
PHE Danfoss, B3-030 series
②
Base heater SUS316L, 150W
③
Water hose in Rubber hose
④
Water hose out Rubber hose
⑤
Water tting BSPP 1" Male
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Functional diagram
AE090JXYD/AE120JXYD/AE140JXYD/AE160JXYD
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
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ENGLISH
Installing the unit
Moving the outdoor unit
Select the moving route in advance.
Be sure that moving route is safe from weight of the outdoor unit.
Do not slant the product more than 30˚when carrying it. (do not lay the product down sideways)
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
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
dierent from the picture depending
on the model.
Moving the outdoor unit with a fork lift
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
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Installing the unit
Deciding on where to install the outdoor unit
Decide the installation location regarding the following condition and obtain the user’s approval.
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.
Choose a location that is dry and sunny, but not exposed to direct sunlight or strong winds.
Do not block any passageways or thoroughfares.
Choose a location where the noise of the Air to Water Heat Pump when running and the discharged air do not disturb
any neighbours.
Choose a position that enables the pipes and cables to be easily connected to the other hydrauric system.
Install the outdoor unit on a at, stable surface that can support its weight and does not generate any unnecessary noise
and vibration.
Position the outdoor unit so that the air ow directly stream towards the open area.
Place the outdoor unit where there are no plants and animals because they may cause malfunction of outdoor unit.
Maintain sucient clearance around the outdoor unit, especially from a radio, computer, stereo system, etc.
When installing the outdoor unit near seashore, make sure it is not directly exposed to sea breeze. If you can not nd an
adequate place without direct sea breeze, make sure to apply anti-corrosion coating on the heat exchanger.
Install the outdoor unit in a place (such as near buildings etc.) where it can be prevented from sea breeze which can
damage the outdoor unit.
If you cannot avoid installing the outdoor unit by the seashore, construct a protection wall around to block the sea
breeze.
Install the outdoor unit in a place where water can drain smoothly.
• Protection wall should be constructed with a solid material such
as concrete to block the sea breeze and the height and the width
of the wall should be 1.5 times larger than the size of the outdoor
unit. Also, secure over 700mm between the protection wall and
the outdoor unit for exhausted air to ventilate.
Sea
Sea breeze
Outdoor
unit
Sea
Sea breeze
Outdoor
unit
Sea
Sea breeze
Outdoor
unit
Protection wall
If you cannot nd a place satisfying above conditions, please contact manufacturer. Make sure to clean the sea water
and the dust on the outdoor unit heat exchanger and spread corrosion inhibitor on heat exchanger.(At least one time
per one year.)
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ENGLISH
When using the air conditioner in the heating mode, ice may accumulate. During de-icing (defrost operation), the
condensed water must be drained o safely. For the air conditioner operates well, you must follow the instructions below.
- Make space more than 80mm between the bottom of the outdoor unit and the ground for installation.
80 mm
- When installing the product, make sure that the rack is not placed under the drain hole.
- Ensure that the drained water runs o correctly and safely.
Do not install the Air to Water Heat Pump in following places.
• 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.
• 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.
• The place where there is a danger of existing combustible gas, carbon ber or ammable dust. The place where thinner
or gasoline is handled.
• Do not install the outdoor unit in a snowy and cold area (low temperature and high humidity area - where the
temperature is below -7°C and humidity is higher than 85%) because according to operation condition (defrost,
etc.), ice may be formed in the drain route.
• If the ice is accumulated, it may cause critical damage to the product.
ex) lakeside of cold area in winter time, seashore, alpine region and etc.
CAUTION
• This device must be installed according to the national electrical rules.
• 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
If the outdoor unit is installed at a height, ensure that its base is rmly xed in position.
Make sure that the water dripping from the drain hose runs away correctly and safely.
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.
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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
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ENGLISH
When installing more than 1 outdoor unit
(Unit : mm)
1500 or more
When the air outlet is towards the wall
300 or more
300 or more 600 or more 600 or more 600 or more
When 3 sides of the outdoor unit are blocked by the wall
300 or more1500 or more
600 or more 600 or more
500 or
more
500 or
more
300 or more
300 or more
When front and rear side of the outdoor unit is towards the wall The upper part of the outdoor unit and the
air outlet is opposite the wall
1500 or more 600 or more 3000 or more 300 or more3000 or more
When front and rear side of the outdoor unit is towards the wall
• The units must be installed according to distances declared, in order to permit accessibility from each side, either
to guarantee correct operation of maintenance or repairing products. The unit’s parts must be reachable and
removable completely under safety condition (for people or things).
CAUTION
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Installing the unit
Outdoor unit installation
The outdoor unit must be installed on a rigid and stable base to avoid any increase in the noise level and vibration,
particularly if the outdoor unit is to be installed in a location exposed to strong winds or at a height, the unit must be xed to
an appropriate support(wall or ground).
Fix the outdoor unit with anchor bolts.
• The anchor bolt must be 20mm or higher from the base
surface.
NOTE
• When tightening the anchor bolt, tighten the rubber washer
to prevent the outdoor unit bolt connection part from
corroding.
• Make a drain outlet around the base for outdoor unit
drainage.
• If the outdoor unit is installed on the roof, you have to check
the ceiling strength and waterproof the unit.
CAUTION
(Unit : mm)
620
940
328
344
384
Anchor bolt hole
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ENGLISH
Outdoor unit support
20mm
Anchor bolt
Outdoor
unit
Base surface
Outdoor unit
support
OUTDOOR UNIT INSTALLED ON THE WALL BY RACK
Ensure the wall will be able to suspend the weight of rack and outdoor unit ;
Install the rack close to the column as much as possible ;
Install proper grommet in order to reduce noise and residual vibration
transferred by outdoor unit towards wall.
When installing air guide duct
• Check and make sure that screws do not damage the copper pipe.
• Secure air guide duct on guard fan.
Do not install the drain plug and the drain hose.
• It may cause frozen ground, so take appropriate measures to
prevent it.
CAUTION
Soft rubber designed to cut o
vibration from rack to wall. (not
supplied with product)
Designed to
cut o residual
vibration from
outdoor unit to
rack. (not supplied
with product)
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Installing the unit
Selecting a location in cold climates
• When operating the unit in a low outdoor ambient temperature, be sure to follow the instructions described
below.
NOTE
To prevent exposure to wind, install the unit with its suction side facing the wall.
Never install the unit at a site where the suction side may be exposed directly to wind.
To prevent exposure to wind, install a bae plate on the air discharge side of the unit.
In heavy snowfall areas it is very important to select an installation site where the snow will not aect the unit. If lateral
snowfall is possible, make sure that the heat exchanger coil is not aected by the snow (If necessary construct a lateral
canopy)
1. Construct a large canopy.
2. Construct a pedestal.
- Install the unit high enough o the ground to prevent it being buried under
snow.
The outdoor unit should be installed with consideration of the direction of strong winds. These can make the unit turn
over, so the side of the unit should be set to face the wind, not the front of the unit.
Strong wind Strong wind
blown air
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ENGLISH
Piping work
Water connections must be made in accordance with the outlook diagram delivered with the unit, respecting the water
in- and outlet. If air, moisture or dust gets in the water circuit, problems may occur. Therefore, always take into account the
following when connecting the water circuit:
Use clean pipes only.
Hold the pipe end downwards when removing burrs.
Cover the pipe end when inserting it through a wall so that no dust and dirt enter.
Use a good thread sealant for the sealing of the connections.
The sealing must be able to withstand the pressures and temperatures of the system.
When using non-brass metallic piping, make sure to insulate both materials from each other
to prevent galvanic corrosion.
Because brass is a soft material, use appropriate tooling for connecting the water circuit.
Inappropriate tooling will cause damage to the pipes.
• Be careful not to deform the unit piping by using excessive force when connecting the piping. Deformation of
the piping can cause the unit to malfunction.
• Always use two wrenches (spanners) for tightening or loosening the water connections, and tighten
connections with a torque wrench as specied in below table. If not, connections and parts can be damaged
and leaks.
• The unit is only to be used in a closed water system. If applications are in open water circuit, it will generate Heat
exchangers fouling, Corrosion, Leak.
CAUTION
Name Tightening torque
1 BSPP1 350~380kgf•cm 34~37N•m
2 Flow switch 72~82kgf•cm 7~8N•m
Flushing and air-purging
When lling water, the following start-up procedure should be followed.
1. All system components and pipes must be tested for the presence of leaks.
2. Preparation of a make-up water assembly or ushing unit is recommended for installation
and service.
3. Before connecting pipes to the Outdoor Unit, ush water pipes clean to remove
contaminants during hours using a ushing unit or tap water pressure if it is adequate (at
2 to 3 bar)
4. Fill water into the Outdoor Unit by opening shut-o & drain valve.
5. Purge the air. (Fill with a ushing unit with sucient capacity: avoid aerating the water)
6. Circulate for long enough to ensure that all air has been bled from the complete water
piping system.
• After installations, commissioning should be performed by qualied
representatives. Unless ushing and air-purging works are performed
adequately, it might result in malfunctions.
CAUTION
Flushing unit
(or purging cart)
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Piping work
• Before installing/commissioning the unit, make sure to check the following points :
- The maximum water pressure of the unit is 2.8 bar static pressure.
- The operating range of leaving water temperature is 25~55˚C at heating conditions and 5~25˚C at cooling
conditions.
- The minimum required water ow for operation is 16 liters/min. At all times the required water ow-rates
should remain. Otherwise, the unit can stop due to a lack of water.
- Water quality must be according to EN directive 98/83 EC.
- If the unit and the pipes are exposed to freezing temperature, It can cause damage to the hydraulic system.
Special care must be taken to prevent freezing of the total water system.
- The unit is designed to be used in a closed-loop system. Do not use any other components which are designed
only for a open-loop system.
- Never use Zn-coated parts in the water circuit.
- All hydraulic parts including eld piping must be insulated to reduce heat loss and condensation.
- It is recommended to install the make-up water assembly to feed small quantities of water to the system
automatically, replacing the minor water losses and maintaining the system pressure.
- Drain taps must be provided at all low points of the system to permit complete drainage of the circuit for
maintenance use.
- Make sure that the check valves are correctly installed in the system (eld supply).
- Flush pipes out with clean water to remove contaminants in pipes during installation.
- The strainer(water lter) must be cleaned after ushing the pipes, and it should be cleaned periodically.
Replace strainer when necessary.
- Charging : Charge the water until a pressure of 1.5~2.0bar by using make-up water assembly(Field supply).
(The water pressure indicated on the manometer will vary depending on the water temperature)
The nominal water pressure in the system should remain about 1.0 bar at all times to avoid air entering the
water system.
- Air purging; Make sure that air should be vented from the system at start-up or after installing/ servicing.
The air vent valve must be opened during charging the water (at least 2 turns) in order to removeall air in the
circuit, and a make-up water assembly allows water into the system continuosly.
- In case that the water piping would be located in a higher position than the air vent of the unit, it is necessary
to add an additional ones in the highest position of water circuit. The air vent should be located both where
water temperatures are the highest and where the height of pipes are the highest.
- Always use materials which are compatible with water used in the system and with the materials used on the
indoor unit.
- Select piping diameter in relation to required water ow and available ESP of the pump.
- Use chemical cleaning agents(Begin with acid , nish with alkali).
- Do not operate the system with closed valves because it results in damaging the heat pump.
CAUTION
EHS MONO_ODU_IM_05387A-01_BOOK.indb 22 2015-06-25 오후 4:40:21
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