INSTALLATION

MANUAL

ENGLISH
UHEAV
UHEAS

ESPAÑOL
FRANÇAIS
ITALIANO
PORTUGUÊS
System Air Conditioner
(Cooling and Heating)

DEUTSCH
EΛΛHNIKA

E S F I P D G DB98-28806A(4)
 Safety Precautions
(Carefully follow the precautions listed below because they are essential to guarantee the safety of the equipment.)

WARNING • 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 different 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 off and disconnect it from the power supply.
 In order to prevent electric shocks, fires 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 qualified 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 fires.
 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 control(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.
INSTALLING THE UNIT
IMPORTANT: When installing the unit, always remember to connect first 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 flames to avoid
the occurrence of fires, explosions or injuries.
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 specifications and that the installed power is sufficient
to ensure the operation of any other domestic appliance connected to the same electric lines.
 Always verify that the cut-off 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 specifications
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.

E-2
 ENGLISH
Contents
 Preparation for outdoor unit installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
 Deciding on where to install the outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . 6
 Outdoor unit installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
 Connecting the cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
 Connecting the refrigerant pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
 Connecting up and removing air in the circuit . . . . . . . . . . . . . . . . . . . . . . . . 14
 Cutting / Flaring the pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
 Performing leak tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
 Connecting the drain hose to the outdoor unit . . . . . . . . . . . . . . . . . . . . . . . 16
 Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
 Using stop valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
 Adding refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
 Transmitter Installation (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
 Pump down Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
 Checking correct grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
 Testing operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

E-3
 Preparation for outdoor unit installation

The air conditioner uses R410A refrigerant.

A Type: UH026EAV1/UH035EAV1 543

12

90
 Heat pump

343
285

542
554

790 54.1

B Type: UH052EAV1/UH052EAS/UH070EAS
� ��� ��

��
 Heat pump
���

�����
���

��� ����

C Type: UH060EAV1/UH070EAV1
 Heat pump
����

�� ��� ��
���

�����
�����

��� ����

E-4
 ENGLISH
D Type: UH090EAS
52 593 12

 Heat pump

364
320

769
839
967

881 60

E Type: UH090EAV/UH105EAV/UH140EAV/UH105EAS
4- 12
 Heat pump 690
403
4 27

375
1,036
966
1,128

1, 16 2

932 78

Moving the Outdoor Unit by Wire Rope

Wire rope
Fasten the outdoor unit by two 8m or longer wire ropes as shown at
the figure. To prevent from damage or scratches, insert a piece of cloth
between the outdoor unit and rope, then move the unit.
Plate protection
cloth

E-5
 Deciding on where to install the outdoor unit

Outdoor Unit
 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 conditioner 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 indoor unit.
 Install the outdoor unit on a flat, stable surface that can support its weight
and does not generate any unnecessary noise and vibration.
 Position the outdoor unit so that the air flow is directed towards the open
area.
 Maintain sufficient clearance around the outdoor unit, especially from a
radio, computer, stereo system, etc.

Indoor Unit Remote Control

Fuse

Fuse
ore

1m or more

re
ore
1.5m or m

mo e
or
1m or m

r
m r mo
1.5 o
m
1.5 Outdoor
Unit
re
or mo
1.5m
Stereo

 If the outdoor unit is installed at a height, ensure that its base is firmly fixed
in position.
 Make sure that the water dripping from the drain hose runs away correctly
and safely.

CAUTION
You have just purchased a system air conditioner and it has been
installed by your installation specialist.
This device must be installed according to the national electrical rules.
With an outdoor unit having net weight upper then 60kg, we suggest do
not install it suspended on wall, but considering floor standing one.

E-6
 ENGLISH
Space Requirements for Outdoor Unit
When installing 1 outdoor unit
Unit : mm
300 or more

1500 or more
 When the air outlet is opposite the wall  When the air outlet is towards the wall

1500 or more
300 or more

2000 or more

300 or more 600 or more

 When 3 sides of the outdoor unit are  The upper part of the outdoor unit and
blocked by the wall the air outlet is towards the wall
300 or more
600 or more

300 or more
1500 or more

 The upper part of the outdoor unit  When front and rear side of the outdoor
and the air outlet is opposite the wall unit is towards the wall

E-7
 Deciding on where to install the outdoor unit (Continued)

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 more
1500 or more
600 or more 600 or more

 When front and rear side of the outdoor unit is towards the wall

1500 or more 600 or more 3000 or more 3000 or more 300 or more
 When front and rear side of the outdoor unit is towards the wall

CAUTION
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).

E-8
 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

ENGLISH
at a height, the unit must be fixed to an appropriate support(wall or ground).

Fix the outdoor unit with anchor bolts.

Note The anchor bolt must be 20mm or higher from the base surface.
Unit : mm
Anchor bolt hole Anchor bolt hole
���

���

���

���
���

���
��� ���
��� ���

Type A Type B
Anchor bolt hole Anchor bolt hole
���

���

���

318

340

364
��� 645
��� 878

Type C Type D
Anchor bolt hole
373

403

427

690
930
Type E

CAUTION
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. Outdoor
Unit

Outdoor Unit Support Anchor bolt Outdoor Unit

Support
����

Base Surface

Designed to cut off

residual vibration from
outdoor unit to rack. (not
supplied with product)
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 trans- Soft rubber designed to cut
ferred by outdoor unit towards wall. off vibration from rack to wall.
(not supplied with product)

E-9
 Connecting the cable

Two electronic cables must be connected to the outdoor unit.

 The connection cord between indoor unit and outdoor unit.
 The power cable between outdoor unit and auxiliary circuit breaker.
 Specially for Russian and European market, before installation, the supply authority should be consulted to
determine the supply system impendance to ensure compliance.
CAUTION
During the unit installation make first refrigerant connections and then electrical connections.
If unit is uninstalled first disconnect electrical cables, then refrigerant connections.
Connect the air conditioner to grounding system before performing the electrical connection.

Example of Air Conditioner System

When using ELB for 1 phase Power cable
Communication cable
Outdoor Unit Communication cable

Power cable Indoor Unit

Grounding

 If an outdoor unit is installed in a place in danger of an electric leak or submergence, you must install the ELB.

Power Cable Specifications

power cable MAX. LENGTH Type GL MCCB
Type of outdoor unit Outdoor Power supply
mm²,wires m A A

UH026EAV1
A 1Φ, 220-240V~, 50Hz 1.5/2 < 10m 15 15
UH035EAV1

UH052EAV1

B UH052EAS 1Φ, 220-240V~, 50Hz 2.0/2 < 10m 20 20

UH070EAS

UH060EAV1
C 1Φ, 220-240V~, 50Hz 2.0/2 < 10m 20 20
UH070EAV1

D UH090EAS 1Φ, 220-240V~, 50Hz 2.5/2 < 10m 25 25

UH090EAV 1Φ, 220-240V~, 50Hz 2.5/2 < 10m 25 25

UH105EAV
1Φ, 220-240V~, 50Hz 4.0/2 < 10m 30 30
E UH105EAS

UH140EAV 1Φ, 220-240V~, 50Hz 6.0/2 < 10m 40 40

 The power cable is not supplied with air conditioner.

 For power cable, use the grade H07RN-F or H05RN-F materials.

Between Indoor and Outdoor Connection Cord Specifications

Power supply(Single Phase) Communation
Earth cable Home Server
Power supply Max/Min(V) Connection cable Cable

1Φ, 220-240V~, Φ1.6mm 0.75~1.25mm² 0.75~1.25mm²

±10% 1.25mm²
50Hz 1wire 2 wire 2 wire

 For connection cord, use the grade H07RN-F or H05RN-F materials.

E-10
 ENGLISH
Wiring Diagram of Power Cable
When using ELB for 1 phase
Power Supply
 Outdoor unit

MCCB Electrical component box

ELB

MCCB

Communication Cable
cable clamp
Connection cord Main power cable

Indoor Unit

The terminal block designs and shape are subject to change according to the model.

CAUTION
You should connect the power cable into the power cable terminal and
fasten it with a clamp.
 The unbalanced power must be maintained within 2% of supply rating.
- If the power is unbalanced greatly, it may shorten the life of the condenser.
If the unbalanced power is exceeded over 4% 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.
 Ensure that main supply connection is made through a switch that disconnects
all poles, with contact gap of a least 3 mm.
 Must keep the cable in a protection tube.
 Keep distances of 50mm or more between power cable and communication
cable.

E-11
 Connecting the cable (Continued)

UHEAV/UHEAS

Wiring Diagram of Connection Cord

Indoor Unit

Outdoor Unit

Outdoor Unit
The terminal block designs and shape are subject to change according to the model.

Note Ground wire for the indoor unit and outdoor unit connection
cable must be clamped to a soft
copper tin-plated eyelet terminal with M4 screw hole(NOT
SUPPLIED WITH UNIT ACCESSORIES).

Connecting the Power Terminal

 Connect the cables to the terminal board using the compressed ring terminal.
 Connect the rated cables only.
 Connect using a driver which is able to apply the rated torque to the screws.
 If the terminal is loose, fire may occur caused by arc.
If the terminal is connected too firmly, the terminal may be damaged.

Tightening Torque (kgf • cm)

M3 5.9 1 phase 220V

CAUTION
When connecting cables, you can connect the cables to the electrical part or
connect them through the holes below depending on the spot.
When connecting cables, make the cable pass through the cable tube
as shown at the figure.

Plate bottom Cable tube

Connection cord

Communication cable
Power cable
Must keep the cable in a protection tube.
Keep distances of 50mm or more between power cable and
communication cable.
When the cables are connected through the hole, remove the Plate bottom.

E-12
Connecting the refrigerant pipe

ENGLISH
Refrigerant Piping System

L1

L0

Pipe length or height

UH090EAV
Refrigerant piping system table UH052EAV1 UH090EAS
UH026EAV1 UH052EAS
UH060EAV1 UH105EAV
UH035EAV1 UH070EAS
UH070EAV1 UH105EAS
UH140EAV
Max. allowable Actual pipe
L0 + H + L1 20m or less 50m or less 30m or less 75m or less
length length
Allowable Actual pipe
H 15m or less 30m or less 20m or less 30m or less
height length length

 Minimum pipe length: equal or more than 3 meters.

Make at least one round:

It will reduce noise and vibration

The appearance of the unit may be different from the diagram depending on the model.

E-13
 Connecting up and removing air in the circuit

The air in the indoor unit and in the pipe must be purged. If air remains in the
refrigeration pipes, it will affect the compressor either reduce cooling/heating
capacity or lead to a malfuction. Refrigerant for air purging is not charged in
the outdoor unit. Use Vacuum Pump as shown at the right figure.
Outdoor unit
A C 1 Connect each assembly pipe to the appropriate valve on the outdoor unit and
tighten the flare nut.

B D 2 Referring to the illustration opposite, tighten the flare nut on section B first
manually and then with a torque wrench, applying the following torque.
Outer Diameter Torque (N•m)
6.35 mm(1/4”) 18
9.52 mm(3/8”) 42
12.70 mm(1/2”) 55
15.88 mm(5/8”) 65
19.05 mm(3/4”) 100

3 Connect the charging hose of low pressure side of manifold gauge to the
packed valve having a service port as shown at the figure.
CAUTION M
 ake the electrical connection and leave the system into
“stand by mode”. Do not turn on the system.
This is necessary to speed up vacuum operation
(full OPEN position of Electronic Expansion Valve - EEV -).

4 Open the valve of the low pressure side of manifold gauge counterclockwise.

5 Purge the air from the system using vacuum pump for about 10 minutes.
Vacuum  Close the valve of the low pressure side of manifold gauge clockwise.
pump
 Make sure that pressure gauge shows -0.1MPa(-76cmHg) after about
10 minutes.
 The designs and shape are subject to This procedure is very important to avoid a gas leak.
change according to the model.
 Turn off the vacuum pump.
 Remove the hose of the low pressure side of manifold gauge.

6 Set valve cork of both liquid side and gas side of packed valve to the open position.

Stem cap 7 Mount the valve stem nuts and the service port cap to the valve, and tighten
A them at the torque of 183kgf•cm with a torque wrench.
(gas)
8 Check for gas leakage.
B  At this time, especially check for gas leakage from the 3-way valve’s stem
Valve stem (liquid)
nuts(A port), and from the service port cap.

CAUTION
 Connect the indoor and outdoor units using pipes with flared connections (not
supplied). For the lines, use insulated, unwelded, degreased and deoxidized
copper pipe,(Cu DHP type to ISO 1337), 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 difference, line length, max. bends,
refrigerant charge, etc.) see “Connecting refrigerant pipe section”.

E-14
Cutting/Flaring the pipes

ENGLISH
1 Make sure that you have the required tools available.
(pipe cutter, reamer, flaring 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.

Oblique Rough Burr

3 To prevent any gas from leaking out, remove all burrs at the cut edge of the
pipe, using aa reamer.

4 Slide a flare nut on to the pipe and modify the flare.

Outer Diameter (D) Depth (A)
6.35 mm(1/4”) 1.3 mm
9.52 mm(3/8”) 1.8 mm
12.70 mm(1/2”) 2.0 mm
15.88 mm(5/8”) 2.2 mm
19.05 mm(3/4”) 2.2 mm

5 Check that the flaring is correct, referring to the illustrations below for
examples of incorrect flaring.

Inclined Damaged Surface Cracked Uneven Thickness

6 Align the pipes and tighten the flare nuts first manually and then with a
torque wrench, applying the following torque.

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

CAUTION
In case of welding the pipe, you must weld with nitrogen gas blowing.

E-15
 Performing leak tests

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 30 bar (gauge).
A
LEAK TEST WITH R410A (after opening valves)
B
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.
Once you have completed all the connections, check for possible leaks using
leak detector specifically designed for HFC refrigerants.
 The designs and shape are subject to
change according to the model.
To check for gas leaks on the... Then, using a leak detector,
check the...

Outdoor unit Valves on sections A and B.

Connecting the drain hose to the outdoor unit

When using the air conditioner in the heating mode, ice may accumulate .
During de-icing (defrost operation), the condensed water must be drained off
safely. Consequently, you must install a drain hose on the outdoor unit,
following the instructions below.

1 Make space more than 50mm between the bottom of the outdoor unit and
the ground for installation of the drain hose, as shown in figure.

1.97inch(50mm) 2 Insert the drain plug into the hole on the underside of the outdoor unit.

3 Connect the drain hose to the drain plug.

30mm
4 Ensure that the drained water runs off correctly and safely.

Insulation

Once you have checked that there are no leaks in the system, you can insulate
the piping and hose.
No gap

1 To avoid condensation problems, place an insulator around each

refrigerant pipe.
Note  When insulate the pipe, be sure to overlap the insulation.
 You have to use more than 120°C insulation(T13.0 or thicker
NBR(T13.0 or thicker) Acrylonitrile Butadien Rubber) for the gas refrigerant pipe.

E-16
Using stop valve

ENGLISH
To Open the Stop Valve

1 Open the cap and turn the stop valve counterclockwise by using a hexagonal Cap
wrench.
Service
port
2 Turn it until the axis is stopped.
Note  Do not apply excessive force to the stop valve and always use
special instruments. Otherwise, the stopping box can be
damaged and the back sheet can leaks. Sealing point
Axis
 If the watertight sheet leaks, turn the axis back by half, tighten
the stopping box, then check the leakage again. If there is no
leakage any more, tighten the axis entirely.

3 Tighten the cap securely.

To Close the Stop Valve

1 Remove the cap.

2 Turn the stop valve clockwise by using a hexagonal wrench.

3 Tighten the axis until the valve reached the sealing point.

4 Tighten the cap securely.

CAUTION
When you use the service port, always use a charging hose, too.
 Check the leakage of refrigerant gas after tightening the cap.
 Must use a spanner and wrench when you open/tighten the stop valve.

E-17
 Adding refrigerant

The outdoor unit is loaded with sufficient refrigerant for the standard piping.
Thus, refrigerant must be added if the piping is lengthened.
This operation can only be performed by a qualified refrigeration specialist.
For quantity of adding refrigerant, refer to page 19.

1 Check that the stop valve is closed entirely.

2 Charge the refrigerant through the service port of liquid stop valve.
Note Do not charge the refrigerant through the gas side service port.

3 If you cannot charge the refrigerant according to the upper steps,

following these:
3-1 Open both liquid stop valve and gas stop valve.
3-2 Operate the air conditioner by pressing the K2 key on the outdoor unit
PCB.
3-3 About 30 minutes later, charge the refrigerant through the service port
of gas stop valve.
Note If necessary, refer to the pressure table classified by outdoor
temperature.
Outdoor unit

Gas side stop valve(service port)

Liquid side stop valve(service port)
Ref.

Indoor unit
1
Balance Vacuum pump

Important information regulation regarding the

refrigerant used
This product contains fluorinated greenhouse gases covered by the Kyoto
Refrigerant type GWP value Protocol. Do not vent gases into the atmosphere.
R410A 1975 CAUTION Inform user if system contains 3 kg or more of fluorinated greenhouse
 GWP=Global Warming Potential
gases. In this case, it has to be checked for leakage at least once every
12 months, according to regulation n°842/2006. This activity has to be
Contains fluorinated greenhouse gases covered by qualified personnel only.
covered by the Kyoto Protocol. In case situation above (3 kg or more of R-410A), installer (or recognised
person which has responsability for final check) has to provide a
Indoor unit
maintenance book, with all the information recorded according to
REGULATION (EC) N° 842/2006 OF THE EUROPEAN PARLIAMENT AND OF
THE COUNCIL of 17 May 2006 on certain fluorinated greenhouse gases.

d  Please fill in with indelible ink,
- the factory refrigerant charge of the product,
a Outdoor unit - the additional refrigerant amount charged in the field and
= ( ) kg
- + the total refrigerant charge.
= ( ) kg + = ( ) kg
on the refrigerant charge label supplied with the product.
b c
Note a. Factory refrigerant charge of the product: see unit name plate
b. Additional refrigerant amount charged in the field
(Refer to the above information for the quantity of refrigerant
replenishment.)
c. Total refrigerant charge
d. Refrigerant cylinder and manifold for charging

 The filled-out label must be adhered in the proximity of the product

charging port (e.g. onto the inside of the stop valve cover).
E-18
 ENGLISH
How to Calculate the Quantity of Adding Refrigerant
If you have used more than “P”, add "Q" of refrigerant for extra meter.
(For maximum piping length and height, refer to page 13)
The quantity of additional refrigerant is variable according to the installation
situation. Thus, make sure the outdoor unit situation before adding
refrigerant. This operation can only be performed by a qualified refrigeration
specialist.

Model “Q”(R410A)
Indoor unit “P”
HEA
Outdoor unit
UH026EAV1 - 5.0m
UH035EAV1 - 5.0m
UH052EAV1 30g/m 5.0m
UH052EAS 20g/m 5.0m
UH060EAV1 30g/m 5.0m
UH070EAV1 30g/m 5.0m
UH070EAS 20g/m 5.0m
UH090EAS 55g/m 5.0m
UH090EAV 40g/m 7.5m
UH105EAV 40g/m 7.5m
UH105EAS 40g/m 7.5m
UH140EAV 40g/m 7.5m

i.e. 1 indoor unit

Additional charging amount

Piping length UH090EAV

UH052EAV1
“a” UH052EAS UH105EAV
UH060EAV1 UH090EAS
UH070EAS UH105EAS
UH070EAV1
UH140EAV
5.0m - - - -
7.5m 75g 50g 137.5g -
9.5m 135g 90g 247.5g 80g

E-19
 Transmitter Installation (Optional)

Accessories
Transmitter Transmitter power Transmitter Installation Manual
cable communication cable

Case Cable-tie

UH140/105/090EAV 1 Fix the case at with bolts on the side of the control box in the outdoor unit.
UH105EAS (See the picture)

Plate Control Low

Transmitter 2 Attach the transmitter PCB to the case in the control box in the outdoor
unit, then connect the power and the communication cable between the
transmitter and the outdoor unit; refer to the figure of page 20.

Bolts spec. 3 If you install a transmitter to an outdoor unit, every indoor unit which is
M4 connected to an outdoor unit can be controlled simultaneously.
7seg. LED
Display side
4 Each outdoor unit connected to the same centralized controller has its
own transmitter.

UH026/035EAV1 UH060/070EAV1 UH090EAS

Bolts spec.
7seg. LED
M4
Display side
Terminal
side

Transmitter
Terminal Transmitter
side
7seg. LED
Display side
Bolts spec. M4

Bolts spec.M4
Transmitter

Fix the case with bolts Fix the case with bolts
(Control Box in the outdoor unit) (Control Box in the outdoor unit)
Fix the case with hinges
(Control Box in the outdoor unit)

E-20
 Pump down Procedure

ENGLISH
Pump down will be carried out when an evaporator is replaced or when the
unit is relocated in another area.

1 Remove the cap from the low pressure side.

2 Turn the low pressure side valve clockwise to close and connect a pressure
gauge (low pressure side) to the service valve, and open the valve again. Low pressure side
(Gas side)
3 Set the unit to cool operation mode. (Check if the compressor is operating.)
High pressure side
(Liquide side)
4 Turn the high pressure side valve counter clockwise to close.

5 When the pressure gauge indicates “0” turn the low pressure side valve counter
clockwise to close.

6 Stop operation of the air conditioner.

7 Close the each cap of valve.

Note Relocation of the air conditioner

 Refer to this procedure when the unit is relocated.
 Carry out the pump down procedure (refer to the details of ‘pump
down’).
 Remove the power cord.
 Disconnect the assembly cable from the indoor and outdoor units.
 Remove the flare nut connecting the indoor unit and the pipe.
 At this time, cover the pipe of the indoor unit and the other pipe using
a cap or vinyl plug to avoid foreign material entering.
 Disconnect the pipe connected to the outdoor unit.
At this time, cover the valve of the outdoor unit and the other pipe
using a cap or vinyl plug to avoid foreign material entering.
 Make sure you do not bend the connection pipes in the middle and
store together with the cables.
 Move the indoor and outdoor units to a new location.
 Remove the mounting plate for the indoor unit and move it to a new
location.

E-21
 Checking correct grounding

If the power distribution circuit does not have a grounding or the grounding
does not comply with specifications, an grounding electrode must be installed.
The corresponding accessories are not supplied with the air conditioner.

1 Select an grounding electrode that complies with the specifications given in

the illustration.
Carbon Steel core
plastic Terminal M4
2 Determine a suitable location for the grounding electrode:
PVC-insulated green/ To grounding  In damp hard soil rather than loose sandy or gravel soil that has a
yellow wire screw higher grounding resistance
 Away from underground structures or facilities, such as gas pipes,
water pipes, telephone lines and underground cables
 At least two metres away from a lightening conductor grounding
electrode and its cable
50cm
Note The grounding wire for the telephone line cannot be used to
ground the air conditioner.
30cm
3 Finish wrapping insulating tape around the rest of the pipes leading to the
outdoor unit.

4 Install a green/yellow coloured grounding wire:

 If the grounding wire is too short, connect an extension lead, in a
mechanical way and wrapping it with insulating tape (do not bury
the connection)
 Secure the grounding wire in position with staples
Note If the grounding electrode is installed in an area of heavy traffic,
its wire must be connected securely.

5 Carefully check the installation, by measuring the grounding resistance with a

ground resistance tester. If the resistance is above required level, drive the
electrode deeper into the ground or increase the number of grounding electrodes.

6 Connect the grounding wire to the electrical component box inside of the
outdoor unit.

E-22
Testing operations

ENGLISH
1 Check the power supply between the outdoor unit and the auxiliary circuit
breaker.
Rotary
Single phase power supply: L, N Switch
���� ����

DIP
2 Check the indoor unit. Switch
2-1 Check that you have connected the power and communication ���� ����
cables correctly. (If the power cable and communication cables one
mixed up or connected incorrectly, the PCB will be damaged.)
2-2 Check the thermistor sensor, drain pump/hose, and display are
connected correctly.

3 Press K1 & K2 on the outdoor unit PCB the system will follow this sequence:
K1 push one start Heating test mode  K1 push two test mode stop
K2 push one start Cooling test mode  K2 push two test mode stop
Note
 Rotary Switch must be adjusted to"0"position .
4 After 12 minutes of stationary condition check each indoor unit air treatment :
DIP Switch must be adjusted to "ON" position .
Cooling mode(indoor unit check)Inlet air temp. - Outlet air temp. :
From 10°C to 12°C
Heating mode(indoor unit check)Outlet air temp. - Inlet air temp. :
From 11°C to 14°C
In heating mode, the indoor fan motor can remain off to avoid cold air
blown into conditioned space.

Settings of PCB Display of the Outdoor unit

K1 K2 K3 K4 DIS 1 DIS 2
KEY Display

CHECK RESET DISPLAY

MODE MODE ITEM NO. CURRENT DATA DISPLAY

Function
Number of K1 K2 K3 K4
press times

Test operation at Test operation at

1 Reset Displays Data
heating mode cooling mode

2 End End - -

E-23
 Troubleshooting

The table below give indication about self diagnostic routine. Some of error code requires activities exclusively
for Authorized Service Center.

Outdoor unit
If an error occurs during the operation, it is displayed on the outdoor unit PCB.
Product operation status
in case of error
Display Content Measure Error type
Outdoor unit compressor/
Outdoor unit fan
Check the communication line for
Indoor unit Communication Communication
indoor units, check the power supply Operation Off
Error Error
of the communication phase (DC)
Communication time-out Check the communication line for
error between indoor/out- indoor units, check the power supply Operation-off Communication
door unit 6-packet over error of the communication phase (DC) Error
Check the temp. sensor of the indoor
Indoor temperature sensor Indoor Sensor
unit room. Check the indoor PCB con- Operation-off
(open/short error) Error
nector CN21(white)
Check the indoor unit drainage pipe
Indoor unit Eva In sensor Indoor Sensor
sensor.Check the indoor PCB connec- Operation-off
(open/short) Error
tor CN21 (white)
Dismount of indoor unit Eva Check the drainage pipe has been dis- Indoor Sensor
Operation-off
In sensor mounted Error
Check the indoor unit’s float sensor-
Secondary detection of Self Diagnosys
Check the indoor PCB connector CN51 Operation-off
indoor floating switch Error
(black)
Check the indoor unit connection. Communication
Indoor unit not connected Operation-off
Check the indoor unit option error
Communication error
between indoor/outdoor Check the Main MICOM.Check the Communication
- error
unit INV and Main Micom (1 inverter MICOM
min.)
Outdoor temperature sensor Outdoor sensor
Outdoor temperature sensor error Operation-off
error error
Check the connection status of the
Outdoor temperature sensor Outdoor sensor
sensorCheck the sensor locationCheck Operation-off
error error
the resistance values of sensor
Check the connection status of the
[inverter] Emission tempera- Outdoor sensor
sensorCheck the sensor locationCheck Operation-off
ture sensor error error
the resistance values of sensor

Excessive temperature emis- Outdoor unit

Not an error (discharge temp. control) - protection con-
sion
trol error
Power cable connection Outdoor sensor
Check the status of power connection Operation-off
error error

E-24
 ENGLISH
Product operation status
in case of error
Display Content Measure Error type
Outdoor unit compressor/
Outdoor unit fan
Non-connection error
of indoor and outdoor Check the status of power connection- Self Diagnosys
Communication wire Check the connection status of the Operation Off Error
(connected to the power communication line
terminal)
Check the input power connection
statusCheck the connection status Self Diagnosys
Outdoor fan 1 error between the motor and PCB in out- Operation-off Error
door unit.Check the fuse of indoor/
outdoor units
Check the connection status of the
[inverter] Compressor compressorCheck the resistance Outdoor unit pro-
Operation-off tection control
operation error between different phases in compres-
sor error

Check the input powerCheck refriger- Outdoor unit pro-

Discharge current error/
ant is filledCheck outdoor fan operates Operation-off tection control
PFC over-current error
normally error
Check refrigerant is filled; Check the
[inverter] IPM over cur- connection status of compressor and Outdoor unit pro-
Operation-off tection control
rent error if it operates normally; Check for any
obstacles around indoor/outdoor units error
Check the connection status of the
[inverter] Compressor compressor;Check the resistance Outdoor unit pro-
Operation-off tection control
rotation error between different phases in compres-
sor error

[inverter] Current sensor Communication

Check PCB operates normally Operation-off
error error
Check the connection of input power. Outdoor unit pro-
[inverter] DC link voltage
Check the status of RY21 and R2000 of Operation-off tection control
sensor error
Inverter PCB error

Outdoor unit pro-

[inverter] OTP error Check PCB operates normally Operation-off tection control
error
Check the connection status of input
powerCheck the connection status Self Diagnosys
Outdoor fan 2 error Operation-off Error
of motor and outdoor PCB Check the
fuse of indoor/outdoor unit
Check refrigerant is filledCheck the Self Diagnosys
Gas leakage error Operation-off
indoor EVA sensor Error

Outdoor unit pro-

Inconsistent volume Check the indoor unit’s option code Operation-off tection control
error

E-25