Samsung MH026FNCA User manual

ENGLISH
Free Joint Multi Air Conditioner
(Cooling and Heating)
INSTALLATION
MANUAL
MHFNCA Series
DB98-29163A(1)SE F
ESPAÑOLFRANÇAIS

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ENGLISH

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Contents
 PREPARING FOR INSTALLATION
 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
 Choosing the Installation Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
 INSTALLING THE AIR CONDITIONER
 Fixing the Installation Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
 Purging the Indoor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
 Installing and Connecting the Assembly Pipe of the Indoor Unit . . . . 8
 Cutting or Extending the Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
 Installing and Connecting the Drain Hose of the Indoor Unit . . . . . . 10
 Changing Direction of the Drain Hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
 Connecting the Assembly Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
 Assigning Address to Indoor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
 Additional Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
 COMPLETING THE INSTALLATION
 Fixing the Indoor Unit in Place . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
 Final Check and Trial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
 Providing Information for User . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

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ENGLISH
Safety Precautions
Keep this installation manual together with the user’s manual in a handy place so that you can find it whenever
you need to see it after reading this manual thoroughly.
 Make sure to read the following safety precautions carefully before installation.
 Make sure to observe the cautions specified in this manual.
 Conduct a test run of the unit after installation and then explain all system functions to the owner.
 The indications and meanings are as shown below.
WARNING
 This indicates the possibility of serious injury or death.

Installation must be carried
out by a qualified installer.

Installers are required to read
the general information
carefully for safety.

Do not put the unit near
dangerous substances to
prevent fire, explosion or
injury and do not expose
the unit to direct sunlight.
Do not install the unit by
yourself (owners).
Incorrect installation of the
unit could cause injury due
to fire, electric shock and
water leakage or from the
unit falling. Consult a dealer
or a qualified installer.
Install the unit in a place
where it is strong enough
to hold the product weight.
When installed in place
where it is not strong
enough to withhold the
product weight, the unit
could fall and cause injury.
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 reach-
able and removable com-
pletely under safety condi-
tion (for people or things)

Use the specified wires to
connect the indoor and
outdoor units securely and
attach the wires firmly to the
terminal block connecting
sections so that the pressure
is not applied to the sections.
Inappropriate connection and
fixing could cause fire.

Avoid the use of an
extension cord and do not
share the power outlet with
other appliances. Incomplete
connection, defective
insulation or exceeding the
permissible current may cause
electric shock or fire.

Make sure that the refrigerant
gas does not leak after
completing the installation.
If the refrigerant gas of
the indoor unit leaks and
comes into contact with the
fan heater, space heater or
stove, harmful substances
will be generated.
Perform the installation
securely referring to
the installation manual.
Incomplete installation
could cause personal injury
due to fire, electric shock
and water leakage or from
the unit falling.
Attach the electrical cover
to the indoor and outdoor
unit securely. If not, it could
result in fire or electric
shock due to dust or water.
Make sure to use the part
provided or specified parts
for the installation work.
The use of defective parts
could cause an injury or
leakage of water due to a
fire, an electric shock, the
unit falling, etc.
Make sure to turn off
the main power when
setting up the indoor unit
electrical circuit or power
cords.
There is a risk of electric
shock.

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CAUTION
 This indicates the possibility of serious injury or damage to environments when
operated incorrectly.

Check the unit for damage
that may have taken place
during transportation and do
not install or use damaged
equipment.

All of the manufacturing and
packaging material used for
your new appliance are
compatible with the
environment and can be
recycled.

Dispose of the packaging
material in accordance with
the local requirements.

This product is an air
conditioning system and
contains a coolant that must
be recovered and disposed
of in an appropriate way by
qualified personnel. At the
end of the life cycle, take it to
a proper recycling or disposal
center or return it to the
dealer so that it can be
disposed correctly.
Grounding the unit.
Do not connect the ground
to a gas pipe, water pipe,
lightning rod or telephone
grounding. Defective
grounding could cause
electric shock.

Do not install the unit in a
place where it is exposed to
inflammable gas leakage.
There is a risk of explosion.

Install a ground leakage
breaker depending on the
installation place (where it is
humid). If not, it may cause
electric shock.

Perform the drainage/piping
work securely according to
the installation manual.
If not, water could drop from
the unit and household
goods could get wet and
damaged.
Fasten a flare nut with a
torque wrench as specified
in this installation manual.
When fastened too tight,
a flare nut may break after
a long period of time and
cause refrigerant leakage.

To prevent injury when
accidentally touching the
indoor unit fan, install the
indoor unit on a place higher
than 2.5m.

The air conditioner must be
installed according to the
national electrical
regulations.

The maximum input power &
current is measured
according to the IEC standard
and the input power &
current is measured
according to the ISO and
EN14511standard.
WARNING
 This indicates the possibility of serious injury or death.

The unit should be installed in
accordance with the National
Electrical regulations.

Ensure that the national safety
code requirements have been
followed for the main supply
circuit. Ensure that a properly
sized and connected ground
wire is in place.

Check if the voltage and the
frequency of the main power
supply are those required for
the unit to be installed and
check the connection.

Make sure that properly sized
disconnecting and safety
switches are installed.
Do not attempt to repair,
move, modify or reinstall
the unit on your own. Make
sure that these installations
are carried out by qualified
personnel to avoid electric
shock or fire.

Use the unit on a single outlet
circuit. Do not share the power
outlet with other appliances.
Obtain the consent by a
qualified installer before
connecting the unit to the
power supply system.

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ENGLISH
Choosing the Installation Location
 Avoid the following places to prevent malfunction of the unit
- Where there is machine oil - Salty environment such as the seaside areas
- Where sulfide gas exists - Other special atmosphere areas
CAUTION
Indoor Unit Outdoor Unit
 Where airflow is not blocked
 Where cool air can be distributed throughout the room
 Install the refrigerant piping length and the height
difference of both indoor and outdoor units as
indicated in the installation diagram
 Wall that prevents vibration and is strong enough to hold the
product weight
 Out of the direct sunlight
 3.3ft or more away from the TV or radio
(to prevent the screen from being distorted or noise from being
generated)
 As far away as possible from fluorescent and incandescent lights
(so that the remote control can be operated well)
 A place where the air filter can be replaced easily
 Where it is not exposed to strong wind
 Well ventilated and dustless places
 Out of the direct sunlight and rain
 Where neighbors are not annoyed by operation sound or hot air
 Solid wall or support that prevents vibration and is strong
enough to hold the product weight
 Where there is no risk of flammable gas leakage
 When installing the unit at a high place be sure to fix the unit
legs
 9.9ft or more away from the TV or radio (to prevent the screen
from being distorted or noise from being generated)
 Install the unit horizontally
PREPARING FOR INSTALLATION
Observe the clearances and maximum lengths as seen in the picture below when installing the air conditioner.
4.9 inch
or more
11.8 inch or more
4.9 inch
or more
23.6 inch
minimum
11.8 inch
minimum
11.8 inch
minimum
23.6 inch
minimum
‘L’ meters maximum
total pipe length
Wrap the refrigerant pipes and the drain
hose with the absorbent pad and vinyl
tape. Refer to page 15 for further details.
You can select the direction
of draining. (left or right)
‘H’ meters maximum
total pipe Height
The appearance of the unit may be different from the diagram depending on the model.
Main power switch
A B C D
Model L(ft) H(ft)
50 98.4 49.2
80 229.7 49.2
Make at least one round:
It will reduce noise and vibration
CAUTION:
9.9ft as minimum pipe length.
It will reduce noise and vibration

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Accessories
The following accessories are supplied with the air conditioner:
 The number of each accessory is indicated in parentheses.
 If these accessories are supplied, they will be in the accessory box.
Accessories in the Indoor Unit Case
Installation Plate (1) Remote Control (1) Batteries for
Remote Control (2)
User’s Manual (1) Installation Manual (1)
The following connection accessories are optional. If they are not supplied, you should obtain them before
installing the air conditioner.
PREPARING FOR INSTALLATION
PE T3 Foam Tube
Insulation (1)
Vinyl Tape (2)Assembly Pipe,
Ø3/8inch (1)
26/35
Assembly Pipe,
Ø1/2inch (1)
52
3-wire
Power Cable 2-wire
Assembly Cable
Assembly Pipe,
Ø1/4inch (1)
Pipe Clamps A (3) Pipe Clamps B (3) Cement Nail (6) M4 x 16
Tapped Screws (6)
Drain Hose,
length 6.56ft (1)
Putty 100g (1)

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ENGLISH
Fixing the Installation Plate
Purging the Indoor Unit
Upon delivery, there may be inert gas inside the indoor unit. Purge the gas
from the indoor unit before connecting the assembly pipe.
Unscrew the caps at the end of each pipe.
Result: All inert gas exhausts from the indoor unit.

To prevent dirt or foreign substances from getting into the pipes during
installation, do NOT remove the caps completely until you are ready to
connect the pipes.
INSTALLING THE AIR CONDTIONER
Before fixing the installation plate to the wall or window frame, you must
determine the position of the 2.56inch hole through which the cable, pipe
and hose pass to connect the indoor unit to the outdoor unit.
When facing the wall, the pipe and cable can be connected from the:
 Right
 Left
 Underside (right)
 Rear (right or left)
1
Determine the position of the pipe and drain hose hole as seen in the picture
and drill the hole with an inner diameter of 2.56inch so that it slants slightly
downwards.
2If you fix the indoor unit to a... Follow step(s)...
Wall 3.
Window frame 4 to 6.
3
Fix the installation plate to the wall giving attention to the weight of the
indoor unit.
 If you mount the plate to a concrete wall with anchor bolts, the anchor
bolts must not project more than 0.8inch(20mm).
4
Determine the positions of the wooden uprights to be attached to the
window frame.
5
Attach the wooden uprights to the window frame giving attention to the
weight of the indoor unit.
6
Attach the installation plate to the wooden uprights using tapping screws as
seen in the picture.
A
B B
C
Pipe hole
Ø2.56 inch (65mm)
MH026FNCA
MH035FNCA MH052FNCA
inch mm inch mm
A4.72 120 5.51 140
B1.06 27 1.34 34
C2.68 68 2.68 68

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INSTALLING THE AIR CONDTIONER
Installing and Connecting the Assembly Pipe of the Indoor Unit
There are 2 refrigerant pipes of different diameters:
 The smaller one is for the liquid refrigerant
 The larger one is for the gas refrigerant
A short pipe is already fitted to the air conditioner. You may need to extend the
pipe using the assembly pipe. (optional)
The connection procedure for the refrigerant pipe varies according to the exit
position of the pipe when facing the wall:
 Right(A)
 Left(B)
 Underside(C)
 Rear
1
Cut out the appropriate knock-out piece on the rear of the indoor unit unless
you connect the pipe directly from the rear.
2
Smooth the cut edges.
3
Remove the protection caps of the pipes and connect the assembly pipe
to each pipe. Tighten the nuts first with your hands, and then with a torque
wrench, applying the following torque:
Outer Diameter Torque
1/4 inch 10.1~12.3 ft.lb
3/8 inch 18.1~20.3 ft.lb
1/2 inch 27.5~30.4 ft.lb
5/8 inch 31.8~34.7 ft.lb
 If you want to shorten or extend pipes, refer to page 9.
4
Cut off the remaining foam insulation.
5
If necessary, bend the pipe to fit along the bottom of the indoor unit.
Then pull it out through the appropriate hole.
 The pipe should not project from the rear of the indoor unit.
 The bending radius should be 4 inch or more.
6
Pass the pipe through the hole in the wall.
7
For further details on how to connect to the outdoor unit and purge the air,
refer to page 13.
 The pipe will be insulated and fixed permanently into position after
finishing the installation and the gas leak test; refer to page 14 for
further details.
DO NOT WALL UP THE PIPE CONNECTION !
All refrigerant pipe connection must be easy accessible and serviceable.
B
A
C
Connect indoor and outdoor units with field-supplied copper pipes by means of
flare connections. Use insulated seamless refrigeration grade pipe only, (Cu DHP
type according to ISO1337), degreased and deoxidized, suitable for operating
pressures of at least 4200 kPa and for burst pressure of at least 20700 kPa. Under
no circumstances must sanitary type copper pipe be used.

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ENGLISH
Cutting or Extending the Pipe
A 24.6ft pipe is supplied with the air conditioner. (optional)
The length of the pipe can be:
 Extended up to 49.2 ft
 Shortened as required
1
Make sure that you have the required tools (pipe cutter, reamer, flaring tool
and pipe holder.)
2
If you want to shorten the pipe, cut it using a pipe cutter, ensuring that the cut
edge remains at 90° with the side of the pipe (see examples of correctly and
incorrectly cut edges below.)
Oblique Rough Burr
3
To prevent a gas leak, remove all burrs at the cut edge of the pipe using a reamer.
4
Put a flare nut slightly into the pipe and modify the flare.
Outer Diameter (D)
Depth (A)
1/4 inch 0.05 inch
3/8 inch 0.07 inch
1/2 inch 0.08 inch
5/8 inch 0.09 inch
5
Check if you flared the pipe correctly (see examples of incorrectly flared pipes below.)
Inclined Damaged Surface Cracked Uneven Thickness
6
Align the pipes to connect them easily. Tighten the flare nuts first with your
hands, and then with a torque wrench, applying the following torque:
Outer Diameter Torque
1/4 inch 10.1~12.3 ft.lb
3/8 inch 18.1~20.3 ft.lb
1/2 inch 27.5~30.4 ft.lb
5/8 inch 31.8~34.7 ft.lb
7
For further details on how to connect to the outdoor unit and purge the air,
refer to page 13.
In case welding the pipe, the gas nitrogen must be blown into the parts.
INSTALLING THE AIR CONDTIONER