Samsung Big Duct Type Series User manual

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2
Safety precautions
Carefully follow the precautions listed below because they are essential to guarantee the safety of the equipment.
• Always disconnect the air conditioner from the power supply before servicing it or accessing
its internal components.
• Verify that installation and testing operations are performed by qualified personnel.
• Verify that the air conditioner is not installed in an easily accessible area.
General information

Carefully read the content of this manual before installing the air conditioner 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 operation and installation manual in a safe location and remember to hand it over to the new owner if the air conditioner is
sold or transferred.
 This manual explains how to install an indoor unit with a split system with two SAMSUNG units. 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.
The manufacturer shall not be responsible for damage originating from unauthorized changes or the improper connection of
electric and requirements set forth in the “Operating limits” table, included in the manual, shall immediately invalidate the warranty.
The air conditioner should be used only for the applications for which it has been designed: the indoor unit is not suitable to be
installed in areas used for laundry.
Do not use the units if damaged. If problems occur, switch the unit o and disconnect it from the power supply.
 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 should be
performed by qualied personnel only.
 The unit contains moving parts, which should always be kept out of the reach of children.
 Do not attempt to repair, move, alter or reinstall the unit. If performed by unauthorized personnel, these operations may cause
electric shocks or res.
WARNING
Safety precautions .............................................................................................................................................................................................................. 2
Preparation for installation ............................................................................................................................................................................................ 4
Deciding on where to install the indoor unit ........................................................................................................................................................ 5
Indoor unit installation .................................................................................................................................................................................................... 8
Purging the unit .................................................................................................................................................................................................................. 9
Connecting the refrigerant pipe ............................................................................................................................................................................... 10
Cutting/Flaring the pipes ............................................................................................................................................................................................. 11
Performing leak test & insulation ............................................................................................................................................................................. 12
Drainpipe and drain hose installation .................................................................................................................................................................... 13
Wiring work ......................................................................................................................................................................................................................... 16
Interface module Installation (Optional) ............................................................................................................................................................... 19
Connecting the connection cord ............................................................................................................................................................................. 20
Adjusting air ow............................................................................................................................................................................................................... 21
Easy Tuning .......................................................................................................................................................................................................................... 22
Setting the indoor unit option code......................................................................................................................................................................... 23
Setting an indoor unit address and installation option ................................................................................................................................... 24
Setting temperature control of discharge air........................................................................................................................................................ 39
Final check and trial operation..................................................................................................................................................................................... 39
Providing information for user..................................................................................................................................................................................... 39
Troubleshooting ............................................................................................................................................................................................................... 40
How to connect your extended power cables .................................................................................................................................................... 43
Contents
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Power supply line, fuse or circuit breaker
Always make sure that the power supply is compliant with current safety standards. Always install the air conditioner in compliance
with current local safety standards.
Always verify that a suitable grounding connection is available.
 Verify that the voltage and frequency of the power supply comply with the specications and that the installed 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 dimensioned.
 Verify that the air conditioner is connected to the power supply in accordance with the instructions provided in the wiring diagram
included in the manual.
 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 conditioners.
 Devices disconnected from the power supply should be completely disconnected in the condition of overvoltage category.
◆Make sure that you earth the cables.
- Do not connect the earth wire to the gas pipe, water pipe, lighting rod or telephone wire. If earthing is not
complete, electric shock or re may occur.
◆Install the circuit breaker.
- If the circuit breaker is not installed, electric shock or re may occur.
◆Make sure that the condensed water dripping from the drain hose runs out properly and safely.
◆ Install the power cable and communication cable of the indoor and outdoor unit at least 1m away from the electric appliance.
◆Install the indoor unit away from lighting apparatus using the ballast.
- If you use the wireless remote controller, reception error may occur due to the ballast of the lighting apparatus.
◆Do not install the air conditioner in following places.
- Place where there is mineral oil or arsenic acid. Resin parts ame and the accessories may drop or water may
leak. The capacity of the heat exchanger may reduce or the air conditioner 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 machine that generates electromagnetic waves. The air conditioner may not operate
normally due to control system.
- The place where there is a danger of existing combustible gas, carbon ber or ammable dust.
The place where thinner or gasoline is handled. Gas may leak and it may cause re.
Installing the unit
IMPORTANT: When installing the unit, always remember to connect rst the refrigerant tubes, then the electrical lines.
Always disassemble the electric lines before the refrigerant tubes.

Upon receipt, inspect the product to verify that it has not been damaged during transport. If the product appears damaged,
DO NOT INSTALL it and immediately report the damage to the carrier or retailer (if the installer or the authorized technician has
collected the material from the retailer.)

After completing the installation, always carry out a functional test and provide the instructions on how to operate the air
conditioner to the user.

Do not use the air conditioner in environments with hazardous substances or close to equipment that release free ames to avoid
the occurrence of res, explosions or injuries.

Our units should be installed in compliance with the spaces shown in the installation manual, to ensure accessibility from both
sides and allow repairs or maintenance operations to be carried out. The unit’s components should be accessible and easy to
disassemble without endangering people and objects.
For this reason, when provisions of the installation manual are not complied with, the cost required to access and repair the units
(in SAFETY CONDITIONS, as set out in prevailing regulations) with harnesses, ladders, scaolding or any other elevation system will
NOT be considered part of the warranty and will be charged to the end customer.
Safety precautions
 Do not place containers with liquids or other objects on the unit.
 All the materials used for the manufacture and packaging of the air conditioner are recyclable.
 The packing material and exhaust batteries of the remote controller(optional) must be disposed of in accordance with current laws.
 The air conditioner contains a refrigerant that has to be disposed of as special waste. At the end of its life cycle, the air conditioner
must be disposed of in authorized centers or returned to the retailer so that it can be disposed of correctly and safely.
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Preparation for installation
◆The following accessories are supplied with the indoor unit.
The type and quantity may dier depending on the specications.
Accessories
User manual(1) Installation
manual(1)
Clamp hose(1) Flexible hose (1) Insulation drain (1)
Thermal insulation
sponge A (1)
Thermal insulation
sponge B (1)
Thermal insulation
sponge C (1)
Cable-tie(8) Rubber(8)
When deciding on the location of the air conditioner with the owner, the following restrictions must be taken into account.
Do NOT install the air conditioner in a location where it will come into contact with the following elements :
◆Combustible gases
◆Saline air
◆Machine oil
◆Sulphide gas
◆Special environmental conditions
If you must install the unit in such conditions, rst consult your dealer.
Avoid installing the air conditioner :
◆In areas where it is exposed to direct sunlight. Close to heat sources.
◆In damp areas or locations where it could come into contact with water. (for example rooms used for laundry)
◆In areas where curtains and furniture could aect the supply and discharge of air.
◆ Without leaving the required minimum space around the unit. (as shown in the drawing)
◆ In scarcely ventilated areas.
◆ On surfaces that are unable to support the weight of the unit without deforming, breaking or causing vibrations
during the use of the air conditioner.
◆
In a position that does not enable the condensate drainage pipe to be correctly installed. (at the end of the
installation. It is always essential to check the eciency of the drainage system)
General
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◆There must be no obstacles near the air inlet and outlet.
◆Install the indoor unit on a ceiling that can support its weight.
◆Maintain sufficient clearance around the indoor unit.
◆Make sure that the water dripping from the drain hose runs away correctly and safely.
◆The indoor unit must be installed in this way, that they are out of public access. (Not touchable by the users)
◆After connecting a chamber, insulate the connection part between the indoor unit and the chamber with t10
or thicker insulation. Otherwise, there can be air leak or dew from the connection part.
■ Construction Standard for Inspection Hole
1) In case, the ceiling is tex tile, Inspection hole dose not need.
2) In case, the ceiling is plaster board, Inspection hole depends on Inside height of the ceiing.
a. Height is more than 0.5m : Only "B" [Inspection for PBA] is applied.
b. Height is less than 0.5m : Both "A"&"B" are applied.
c. "A"&"B" are inspection holes .
Indoor unit
Space requirements for installation & service
Deciding on where to install the indoor unit
Unit Width(W)
"A"=W+100mm
Unit Depth(D)
"B"=500mm
 You must have20mm or more space between the ceiling and the bottom of indoor unit. Otherwise, the noise
from the vibration of indoor unit may bother the user.When the ceiling is under construction, the hole for
check-up must be made to take service, clean and repair the unit.
It is possible to install the unit at an height of between 2.2~2.5m from the ground,
if the unit has a duct with a well defined lenght (300mm or more), to avoid fan motor blower contact.
If you install the cassette or duct type indoor unit on the ceiling with humidity over 80%, you must apply extra
10mm of polyethylene foam or other insulation with similar material on the body of the indoor unit.
20mm
20mm
or more
or more
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Thickness: more than 10mm
◆
Insulate the end of the pipe and some curved area by using separate insulator.
◆
Insulate the discharge and suction part at the same time when you insulate connection duct.
◆
If the humidity is over 80%, it is required to add 10mm polyethylene foam or other similar insulation to the indoor unit
when installing belt or pipe type indoor unit on the ceiling.
A C
B
D
Front
Back
Indoor Unit AB C D Front/Back
AM✴✴✴JNHF✴✴ 1350 x 850 x 450 1350 x 450 1350 x 450 850 x 450 850 x 450
Insulate the front and back side
in proper size at the same time
when insulating the suction
duct and discharge duct.
Insulation Guide
Deciding on where to install the indoor unit
Unit: mm
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1 2 3 4
500
5
6
1350
1450
1200(24x50)
1284
279
450
850
782
300(6x50)
360
450
30
220
1439
1392
1350
(Suspension position)
(Air outlet duct flange)
(Suspension position)
Inspection hole
Suction side
Discharge side
No. Name Description
1Liquid pipe connection ø9.52(3/8")
2Gas pipe connection ø19.05(3/4")
3Drain pipe connection OD25 ID20(without drain pump)
4Power supply connection
5Air discharge flange
6Hook M10
Unit:mm
AM✴✴✴JNHF✴✴
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Indoor unit installation
When deciding on the location of the air conditioner with the owner, the following restrictions must be taken into account.
1
Place the pattern sheet on the ceiling at the spot where you want
to install the indoor unit.
2
Insert bolt anchors. Use existing ceiling supports or construct a suit-
able support as shown in figure.
3 Install the suspension bolts depending on the ceiling type.
4 Screw eight nuts to the suspension bolts making space for hanging
the indoor unit.
5 Hang the indoor unit to the suspension bolts between two nuts.
6 Screw the nuts to suspend the unit.
7 Adjust level of the unit by using measurement plate for all 4 sides.
Concrete
Suspension bolt(M10)-field supply
Hole in anchor
hole in plug
Ceiling support
When the drain hose is installed to the right.
Drain hose port
3mm
Insert
• Since the diagram is made of paper, it may shrink or
stretch slightly due to temperature or humidity. For this
reason, before drilling the holes maintain the correct
dimensions between the markings.
• Pattern sheet is supplied depending on the model type.
•Ensure that the ceiling is strong enough to support the weight
of the indoor unit. Before hanging the unit, test the strength of
each attached suspension bolt.
• If the length of suspension bolt is more than 1.5m,
it is required to prevent vibration.
• If this is not possible, create an opening on the false ceiling in
order to be able to use it to perform the required operations on
the indoor unit.
• Piping must be laid and connected inside the ceiling when
suspending the unit. If the ceiling is already constructed, lay the
piping into position for connection to the unit before
placing the unit inside the ceiling.
• For proper drainage of condensate, give a 3mm slant to the
left or right side of the unit which will be connected with the
drain hose, as shown in the gure. Make a tilt when you wish to
install the drain pump, too.
• When installing the indoor unit, make sure it is not tilted toward
front or back side.
• You must install all the suspension rods.
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Purging the unit
From factory the unit is supplied and set with a pre-charge of nitrogen gas. (insert gas) Therefore, all insert gas must be purged
before connecting the assembly piping.
Unscrew the pinch pipe at the end of each refrigerant pipe.
RESULT : All inert gas escapes from the indoor unit.
• To prevent dirt or foreign objects from getting into the pipes during
installation, do NOT remove the pinch pipe completely until you are
ready to connect the piping.
• Connect the indoor and outdoor units using pipes with ared
connections(not supplied). For the lines, use insulated, unwelded,
degreased and deoxidized copper pipe (Cu DHP type to ISO 1337 or
UNI EN 12735-1), suitable for operating pressures of at least 4200kPa
and for a burst pressure of at least 20700kPa. Copper pipe for hydro-
sanitary applications is completely unsuitable.
• For sizing and limits (height dierence, line length, max. bends,
refrigerant charge, etc.) see the outdoor unit installation manual.
• All refrigerant connection must be accessible, in order to permit either
unit maintenance or removing it completely.
 The designs and shape are subject
to change according to the model.
G_1
Gas refrigerant port
Liquid refrigerant port
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There are two refrigerant pipes of dierent diameters :
◆A smaller one for the liquid refrigerant
◆A larger one for the gas refrigerant
◆The inside of copper pipe must be clean & has no dust
1. Remove the pinch pipe on the pipes and connect the assembly pipes to each pipe, tightening the nuts, rst manually
and then with a torque wrench, a spanner applying the following torque.
2. Must use insulator which is thick enough to cover the refrigerant tube to protect the condensate water on the outside
of pipe falling onto the oor and the eciency of the unit will be better.
3. Cut o any excess foam insulation.
4. Be sure that there must be no crack or wave on the bended area.
5. It would be necessary to double the insulation thickness(10mm or more) to prevent condensation even on the
insulator when if the installed area is warm and humid.
6. Do not use joints or extensions for the pipes that connect the indoor and outdoor unit. The only permitted connections
are those for which the units are designed.
• If the pipes must be shortened refer to page 15.
Refrigerant oil
Spanner
Union
Torque wrench
Flare nut
Outer Diameter (D) Torque (N•m)
ø6.35 mm 14~18
ø9.52 mm 34~42
ø12.70 mm 49~61
ø15.88 mm 68~82
ø19.05 mm 100~120
Connecting the refrigerant pipe
 The designs and shape are subject to change according to the model.
G_4
Drain hose connection port
G_1
Liquid refrigerant port
Gas refrigerant port
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Cutting/Flaring the pipes
1. Make sure that you have the required tools available. (pipe cutter, reamer, aring tool and pipe holder)
2. If you wish to shorten the pipes, cut it with a pipe cutter, taking care to ensure that the cut edge remains at a 90° angle
with the side of the pipe. Refer to the illustrations below for examples of edges cut correctly and incorrectly.
3. To prevent any gas from leaking out, remove all burrs at the cut edge of the pipe, using a reamer.
4. Slide a are nut on to the pipe and modify the are.
5. Check that the aring is correct, referring to the illustrations below for examples of incorrect aring.
6. Align the pipes and tighten the are nuts rst manually and then with a torque wrench, applying the following torque.
• If the pipes require brazing ensure that OFN (Oxygen Free Nitrogen) is owing through the system.
• Nitrogen blowing pressure range is 0.02 ~ 0.05MPa.
Oblique Rough Burr
Pipe
cutter
Pipe
Outer Diameter (D) Depth (A)
ø6.35 mm 1.3 mm
ø9.52 mm 1.8 mm
ø12.70 mm 2.0 mm
ø15.88 mm 2.2 mm
ø19.05 mm 2.2 mm
Pipe Flare
Uneven
Thickness
CrackedDamaged
Surface
InclinedCorrect
Valve Flare nut Valve cap Pressure port cap Valve needle Pressure port
Wrench(mm) N•m Wrench(mm) N•m Wrench(mm) N•m Wrench(mm) N•m Wrench(mm) N•m
1/4" 17 18 23 20 18 16~18 Allen(hex.) 5 9-0.34
3/8" 22 42 23 20 18 16~18 Allen(hex.) 5 9-0.34
1/2" 26 55 29 40 18 16~18 Allen(hex.) 5 13 -0.34
5/8" 29 65 29 40 18 16~18 Allen(hex.) 5 13 -0.34
3/4" 36 100 38 40 18 16~18 Allen(hex.) 5 13 -0.34
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Performing leak test & insulation
Once you have checked that there are no leaks in the system, you can insulate the piping and hose.
1
To avoid condensation problems, place T13.0 or thicker Acrylonitrile Butadien Rubber separately around each refrigerant
pipe.
2 Wind insulating tape around the pipes and drain hose avoiding to compress
the insulation too much.
3
Finish wrapping insulating tape around the rest of the pipes leading to the outdoor
unit.
4 The pipes and electrical cables connecting the indoor unit with the outdoor
unit must be xed to the wall with suitable ducts.
5 Select the insulation of the refrigerant pipe.
◆ Insulate the gas side and liquid side pipe referring to the thickness
according to the pipe size.
◆
Indoor temperature of 30°C and humidity of 85% is the stan dard condition.
If installing in a high humidity condition, use one grade thicker insulator by referring to the table below.
If installing in an unfavorable conditions, use thicker one.
◆ Insulator’s heat-resistance temperature should be more than 120°C.
Leak test
Insulation
No gap
NBR(T13.0 or thicker)
Insulation cover pipe
Indoor unit
Be sure to overlap
the insulation
Insulation pipe
• Must t tightly against
body without any gap.
• Always make the seam of pipes face upwards.
• All refrigerant connection must be accessible, in order to permit
either unit maintenance or removing it completely.
• The insulation has to be produced in full compliance of European
regulation reg. EEC / EU 2037/ 2000 that
requires the use of sheaths insulation form without using CFC and
HCFC gases for health and the environment.
◆ LEAK TEST WITH NITROGEN (before opening valves)
In order to detect basic refrigerant leaks, before recreating the vacuum and
recirculating the R410A, it’s responsable of installer to pressurize the whole
system with nitrogen (using a cylinder with pressure reducer)
at a pressure above 40 bar (gauge).
◆ LEAK TEST WITH R410A (after opening valves)
Before opening valves, discharge all the nitrogen into the system and
create vacuum. After opening valves check leaks using a leak detector for
refrigerant R410A.
• Discharge all the nitrogen to create a vacuum and charge the system.
 The designs and shape are subject to
change according to the model.
G_1
Gas refrigerant port
Liquid refrigerant port
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Pipe Pipe size
Insulation Type (Heating/Cooling)
RemarksStandard [30°C, 85%] High humidity [30°C, over 85%]
EPDM,NBR
Liquid
pipe
Ø6.35 ~ Ø9.52 9t 9t
Internal temperature is
higher than 120°C
Ø12.7 ~ Ø19.05 13t 13t
Gas
pipe
Ø6.35 13t 19t
Ø9.52
19t 25t
Ø12.70
Ø15.88
Ø19.05
◆ When installing insulation in places and conditions below, use the same insulation that is used for high humidity conditions.
<Geological condition>
- High humidity places such as shoreline, hot spring, near lake or river, and ridge (when the part of the building is covered by
earth and sand.)
<Operation purpose condition>
- Restaurant ceiling, sauna, swimming pool etc.
<Building construction condition>
- The ceiling frequently exposed to moisture and cooling is not covered.
e.g.The pipe installed at a corridor of a dormitory and studio or near an exit that opens and closes frequently.
- The place where the pipe is installed is highly humid due to the lack of ventilation system.
Drainpipe and drain hose installation
Care must be taken when installing the drain hose for the indoor unit to ensure that any condensate
water is correctly drained outside.
The drain hose can be installed to the right of the base pan.
1
Installing the drain hose should be the shorter, the better.
◆ In order to discharge condensation water, the drain hose should keep tilted.
◆ Fix the drain hose with Cable-Tie, so that it will not separate from the machine.
◆ While using draining pump, connect the end with draining pump.
2
Insulate and fix the drain hose according to the figure.
◆ Insert the drain hose to bottom of the outfall of water basin.
◆ Lock steel ring of the drain hose according to the figure.
◆ Wind and wrap steel ring and drain hose fully with thermal insulation sponge; fix both ends of exter-
nal layer with ribbon for thermal insulation.
◆ After being installed, drain hose must be insulated fully by heat insulating material. (To be provided
at site.)
A-A’
Steel ring of drain hose
Joint of drain hose
Drain hose Drain hose
Fix with Cable-Tie
Wrap thermal sleeve hose
Indoor unit
As shown in the figure,
tighten steel ring of the
drain hose.
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Drainpipe and drain hose installation
1. Install horizontal drainpipe with a slope of 1/100 or more and fix it by hanger space of 1.0~1.5m.
2. Install U-trap at the end of the drainpipe to prevent a nasty smell to reach the indoor unit.
3. Do not install the drainpipe to upward position. It may cause water flow back to the unit.
Without the drain pump
1~1.5m
Horizontal drainpipe
more than 1/100 slope
Ceiling
Hanger
Flexible hose
Drainpipe Connection
With the drain pump
1~1.5m
20mm
or more
200mm
or more
Hanger
Within
300~550mm
Air vent
300mm or less
Flexible hose
Horizontal drainpipe
more than 1/100 slope
Ceiling
1. The drain pipe should be installed within 300mm to 550mm from the flexible hose and then lift down 20mm
or more.
2. Install horizontal drainpipe with a slope of 1/100 or more and fix it by hanger space of 1.0~1.5m.
3Install the air vent in the horizontal drainpipe to prevent water flow back to the indoor unit.
4The flexible hose should not be installed upward position,
it may cause water flow back to the indoor unit.
• You may not need to install it if there were proper slope in the horizontal drainpipe.
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15
Prepare a little water about 2 liter.
1
Pour water into the base pan in the indoor unit as shown in figure.
2
Confirm that the water flows out through the drain hose.
Testing the drainage
1Install horizontal drainpipe with a slope of 1/100 or more and fix it by hanger space of 1.0~1.5m.
2Install U-trap at the end of the drainpipe to prevent a nasty smell to reach the indoor unit.
Without the drain pump
1Install main air vent at the front of the farthest indoor unit from the main drain when installed
indoor units are more than 3.
2You may need to install individual air vent to prevent water flow back at the top of each indoor unit
drainpipe.
With the drain pump
Hanger
Main drainpipe
Individual
air vent
Main air vent
Centralized horizontal drainpipe
(more than 1/100 slope)
550mm or
less
1~1.5m
100mm or more
Ceiling
Horizontal drainpipe
more than 1/100 slope
Centralized Drainage
G_6
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Wiring work
Silver solder
Norminal
dimensions
for cable
(mm2)
Norminal
dimensions
for screw
(mm)
B D d1 E F L d2 t
Standard
dimension
(mm)
Allowance
(mm)
Standard
dimension
(mm)
Allowance
(mm)
Standard
dimension
(mm)
Allowance
(mm) Min. Min. Max.
Standard
dimension
(mm)
Allowance
(mm) Min.
1.5 46.6 ±0.2 3.4 +0.3
-0.2 1.7 ±0.2 4.1 616 4.3 +0.2
00.7
4 8
2.5 46.6 ±0.2 4.2 +0.3
-0.2 2.3 ±0.2 6 6 17.5 4.3 +0.2
00.8
48.5
4 4 9.5 ±0.2 5.6 +0.3
-0.2 3.4 ±0.2 6 5 20 4.3 +0.2
00.9
N L
N L N L N L
ELCB
MCCB+
ELB
V1 V2
Indoor Unit 1 Indoor Unit 2 Indoor Unit 3
Indoor Unit 4 Indoor Unit 5 Indoor Unit 6
Outdoor Unit
Wired Remote
Control
EEV kit
hCeiling, wall-mounted indoor unit.
220-240V~
or
hELCB : Essential Installation
WARNING :
Power off before connecting any wires;
Indoor PBA will be damaged while V1,V2,F3,F4 short each
other.
Power and communication cable connection
Selecting compressed ring terminal
1. Before wiring work, you must turn off all power source.
2. Indoor unit power should be supplied through the breaker( ELCB or MCCB+ELB ) separated by the
outdoor power.
ELCB:Earth Leakage Circuit Breaker
MCCB:Molded Case Circuit Breaker
ELB:Earth Leakage Breaker
3. The power cable should be used only copper wires.
4. Connect the power cable{1(L), 2(N)} among the units within maximum length and communication
cable(F1, F2) each.
5. Connect F3, F4(for communication) when installing the wired remote control.
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Power supply MCCB ELB or ELCB Power cable Earth cable Communication cable
Max : 242V
Min : 198V XAXA, 30mmA
0.1 s 2.5mm22.5mm20.75~1.5mm2
Decide the capacity of ELCB(or MCCB+ELB) by below formula.
 Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene
sheathed flexible cord.
(Code designation IEC:60245 IEC 57 / CENELEC:H05RN-F or IEC:60245 IEC 66 / H07RN-F)
The capacity of ELCB(or MCCB+ELB) X[A] = 1.25 X 1.1 X ∑A i
T X : The capacity of ELCB(or MCCB+ELB).
T ∑ Ai : Sum of Rating currents of each indoor unit.
T Refer to each installation manual about the rating current of indoor unit.
Decide the power cable specification and maximum length within
10% power drop among indoor units.
T coef: 1.55
T Lk: Distance among each indoor unit[m], Ak: Power cable specification[mm
2
]
ik: Running current of each unit[A]
∑ ( Coef×35.6×Lk×ik) < 10% of input voltage[V]
1000×Ak
n
k=1
Example of Installation
- Total power cable length L = 100(m), Running current of each units 1[A]
- Total 10 indoor units were installed
Apply following equation.
∑ ( Coef×35.6×Lk×ik) < 10% of input
voltage[V]
1000×Ak
n
k=1
hCalculation
 Installing with 1 sort wire.
220[V]
-2.2[V] -2.0[V]
············ 2.5[mm2]············
208.8[V](Within 198V~242V)
-(2.2+2.0+1.8+1.5+1.3+1.1+0.9+0.7+0.4+0.2)=-11.2[V]
it's okay
2.5[mm2]2.5[mm2]
 Installing with 2 different sort wire.
220[V] -1.4[V] -1.2[V]
············ 2.5[mm2]············
209.5[V](Within 198V~242V)
-(1.4+1.2+1.8+1.5+1.3+1.1+0.9+0.7+0.4+0.2)=-10.5[V]
it's okay
4.0[mm2]4.0[mm2]
10[A]
Indoor unit10
20[m]10[m]0[m]
9[A] 1[A]
100[m]
Indoor unit2Indoor unit1
ELCB
or MCCB+
ELB
Specification of electronic wire
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Tightening torque
N
• mkgf • cm
M3.5 0.8~1.0 8.0~10.0
M4 1.2~1.5 12.0~14.7
• Select the power cable in accordance with relevant local and national regulations.
• Wire size must comply with local and national code.
• For the power cable, use the grade of H07RN-F or H05RN-F materials.
• You should connect the power cable into the power cable terminal and fasten it with a clamp.
• The unbalanced power must be maintained within 10% of supply rating among whole indoor units.
• If the power is unbalanced greatly, it may shorten the life of the condenser. If the unbalanced
power is exceeded over 10% of supply rating, the indoor unit is protected, stopped and the error
mode indicates.
• To protect the product from water and possible shock, you should keep the power cable and the
connection cord of the indoor and outdoor units in the iron pipe.
• Connect the power cable to the auxiliary circuit breaker.
An all pole disconnection from the power supply must be incorporated in the xed wiring(≥3mm).
• You must keep the cable in a protection tube.
• Keep distances of 50mm or more between power cable and communication cable.
• Maximum length of power cables are decided within 10% of power drop. If it exceeds, you must
consider another power supplying method.
• The circuit breaker(ELCB or MCCB+ELB) should be considered more capacity if many indoor units
are connected from one breaker.
• Use round pressure terminal for connections to the power terminal block.
• For wiring, use the designated power cable and connect it rmly, then secure to prevent outside
pressure being exerted on the terminal board.
• Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small head
will strip the head and make proper tightening impossible.
• Over-tightening the terminal screws may break them.
• See the table below for tightening torque for the terminal screws.
Wiring work
Rating current
Unit Model Rating current
AMTJNHFKHTT
180
T
T
224
T
1.9A
2.9A
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Interface module Installation (Optional)
Accessories (SPI module : MSD-EAN1)
1. Fix the case at with bolts on the side of the control box in the indoor unit.(See the
picture)
2. Attach the Interface module PCB to the case in the control box of the indoor unit,
then connect the power and the communication cable between the Interface
module and the indoor unit;
3. If you install a Interface module to an indoor unit, every outdoor unit which is
connected to an indoor unit can be controlled simultaneously.
4. Each indoor unit connected to the same centralized controller has its own
Interface module.
Refer to the SPI module(MSD-EAN1) installation manual for the more information.
Accessories (Interface module : MIM-B14)
External Control PCB Case Haness Wire(2P) Haness Wire (4P) Screw
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Connecting the connection cord
• Always remember to connect the refrigerant pipes before performing the electric connections.
When disconnecting the system, always disconnect the electric cables before disconnecting the refrigerant pipes.
• Always remember to connect the air conditioner to the grounding system before performing
the electric connections.
The indoor unit is powered by the outdoor unit by means of a H07 RN-F connection cable (or a more power model),
with insulation in synthetic rubber and jacket in polychloroprene(neoprene), in accordance with the requirements of standard EN 60335-2-40.
1. Remove the screw on the electrical component box and remove the cover plate.
2. Route the connection cord through the side of the indoor unit and connect the cable to terminals; refer to the gure below.
3. Route the other end of the cable to the outdoor unit through the ceiling & the hole on the wall.
4. Reassemble the electrical component box cover, carefully tightening the screw.
Indoor Power supply Communication Cable
Power Supply Max/Min(V)
Indoor Power cable
220-240V~/50Hz ±10% 2.5mm² ↑,3wires 0.75~1.25mm²,2wires
❈ For connection cable, use the grade H07RN-F or H05RN-F materials.
❈ Screws on terminal block must not be unscrewed with the torque less than 12 kgf•cm.
❈ Since it has the external power supply, refer to the outdoor unit installation manual for MAIN POWER.
Between Indoor and Outdoor Connection cable Specications(Common in use)
Terminal Block SPEC (Indoor)
When installing the indoor unit in a computer room, use the
double shielded(Tape aluminum / polyester braid + copper)
cable of FROHH2R type.
AC POWER : M4 SCREW
8.4 9.5
COMMUNICATION : M4 SCREW
8.4 9.5
10 10
In case of extending the electric wire, please
DO NOT use a round-shaped pressing socket.
- Incomplete wire connections can cause
electric shock or a re.
WARNING
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