Samsung RC DHXE Series User manual

RCDHXE
RCDHXGA
RCPHXEA
RCPHXGA
RCZHXEA
RCSHXEA
Air Conditioner
installation manual
imagine the possibilities
Thank you for purchasing this Samsung product.
To receive more complete service, please
register your product at
www.samsung.com/register
100%
Recycled Paper
100%
Recycled Paper
100%
Recycled Paper
DB98-32793A(6)
IFSE P G RD
RC���DHXEA_IM_E_32793A(6).indd 29 2011-03-25 �� 11:01:10

2
Safety precautions
Contents
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 air conditioner is compliant with the requirements of the Low Voltage Directive (72/23/EEC),
the EMC Directive (89/336/EEC) and the Directive on pressurized equipment (97/23/EEC).
 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.
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.
WARNING
Preparation for outdoor unit installation ..................................................................................................................................................................... 4
Deciding on where to install the outdoor unit ........................................................................................................................................................ 5
Outdoor unit installation ................................................................................................................................................................................................... 8
Connecting the cable .......................................................................................................................................................................................................... 9
Connecting the refrigerant pipe .................................................................................................................................................................................. 14
Connecting up and removing air in the circuit .................................................................................................................................................... 16
Installing DPM ..................................................................................................................................................................................................................... 17
Cutting/Flaring the pipes ................................................................................................................................................................................................ 19
Performing leak tests ........................................................................................................................................................................................................ 20
Connecting the drain hose to the outdoor unit .................................................................................................................................................. 20
Insulation ............................................................................................................................................................................................................................... 20
Using stop valve .................................................................................................................................................................................................................. 21
Adding refrigerant ............................................................................................................................................................................................................. 21
Interface module Installation (Optional) ................................................................................................................................................................. 23
Pump down Procedure ................................................................................................................................................................................................... 23
Checking correct grounding ........................................................................................................................................................................................ 24
Testing operations ............................................................................................................................................................................................................. 25
Troubleshooting ................................................................................................................................................................................................................. 27
RC＊＊＊DHXEA_IM_E_32793A(5).indd 2 2011-03-09 오후 9:22:29

ENGLISH
3
 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.
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.
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.
RC＊＊＊DHXEA_IM_E_32793A(5).indd 3 2011-03-09 오후 9:22:29

4
AA
Preparation for outdoor unit installation
The air conditioner uses R410A refrigerant.
A Type: RC090DH/RC090PH/RC090SH/RC100DH/RC100SH
 Heat pump 620
940
330973
998
528
537
675
360
384
B Type: RC100PH/RC125DH/RC125PH/RC140DH
 Heat pump 620
940
330
1185
1210
558
567
885
360
384
(Unit : mm)
C Type: RC140PH/RC100ZH
 Heat pump 620
330
360
384
940
1395
1420
567
1095
558
RC���DHXEA_IM_E_32793A(6).indd 4 2011-03-24 �� 10:02:32

ENGLISH
5
Plate protection
cloth
Wire rope
Moving the Outdoor Unit by 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.
Deciding on where to install the outdoor unit
Fuse
Outdoor
Unit
Stereo
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 at, stable surface that can support its weight and does not generate any unnecessary noise
and vibration.
 Position the outdoor unit so that the air ow is directed towards the open area.
 Maintain sucient clearance around the outdoor unit, especially from a radio, computer, stereo system, etc.
 If the outdoor unit is installed at a height, ensure that its base is rmly xed in position.
 Make sure that the water dripping from the drain hose runs away correctly and safely.
 When you install the outdoor unit at wayside, you should install it above 2m height or make sure that the heat from the
outdoor unit shouldn't be in direct contact with passersby. (The ground for application :The revision of regulation for facility
in building by the law of the Ministry of Construction and Transportation.
• 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 than 60kg, we suggest do not install it suspended on wall,
but considering oor standing one.
1.5m or more
Indoor Unit Control
Air Guide Duct
(This product is not
provided by Samsung)
1m or more
1m or more
1.5m or more
1.5m or more
1.5m or more
Fuse
200mm
300mm
 The appearance of the unit may be differ
ent from the picture depending on
the model.
RC＊＊＊DHXEA_IM_E_32793A(5).indd 5 2011-03-09 오후 9:31:47

AA
6
Deciding on where to install the outdoor unit
Space Requirements for Outdoor Unit
When installing 1 outdoor unit
300 or more
 When the air outlet is opposite the wall
1500 or more
 When the air outlet is towards the wall
300 or more
300 or more 600 or more
 When 3 sides of the outdoor unit are blocked
by the wall
1500 or more
2000 or more
 The upper part of the outdoor unit and the air
outlet is towards the wall
1500 or more
600 or more
300 or more
 The upper part of the outdoor unit and the
air outlet is opposite the wall
300 or more
 When front and rear side of the outdoor unit is
towards the wall
RC＊＊＊DHXEA_IM_E_32793A(5).indd 6 2011-03-09 오후 9:31:47

7
ENGLISH
1500 or more
 When the air outlet is towards the wall
300 or more
300 or more
1500 or more 600 or more 3000 or more 300 or more3000 or more
600 or more 600 or more
300 or more1500 or more
600 or more 600 or more
600 or more
 When 3 sides of the outdoor unit are blocked by the wall
 When front and rear side of the outdoor unit is towards the wall
 When front and rear side of the outdoor unit is towards the wall
When installing more than 1 outdoor unit
• 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).
(Unit : mm)
500 or more500 or more
300 or more
300 or more
 The upper part of the outdoor unit and the air
outlet is towards the wall
RC＊＊＊DHXEA_IM_E_32793A(5).indd 7 2011-03-09 오후 9:31:48

8
Outdoor unit installation
(Unit : mm)
620
940
330 358
384
Anchor bolt hole
The outdoor unit must be installed on a rigid and stable base to avoid any increase in the noise level and vibration, particularly
if the outdoor unit is to be installed in a location exposed to strong winds or at a height, the unit must be fixed to an appropriate
support(wall or ground).
Fix the outdoor unit with anchor bolts.
• Theanchorboltmustbe20mmorhigherfromthebasesurface.
• 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.
When installing air guide duct
• Checkandmakesurethatscrewsdonotdamagethecopperpipe.
• Secureairguideductonguardfan.
Outdoor Unit Support
20mm
Anchor bolt
Outdoor
Unit
Base Surface
Outdoor Unit
Support
Soft rubber designed to
cutoffvibrationfromrack
towall.(notsuppliedwith
product)
Designed to cut off
residualvibration
from outdoor unit to
rack.(notsupplied
withproduct)
OUTDOOR UNIT INSTALLED ONTHEWALL BY RACK
 -Ensurethewallwillbeabletosuspendtheweightofrackandoutdoorunit;
 -Installtherackclosetothecolumnasmuchaspossible;
 -Installpropergrommetinordertoreducenoiseandresidualvibration
transferredbyoutdoorunittowardswall.
RC���DHXEA_IM_E_32793A(6).indd 8 2011-03-24 �� 10:02:41

ENGLISH
9
AAConnecting 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.
• During the unit installation make rst refrigerant connections and then electrical connections. If unit is uninstalled
rst disconnect electrical cables, then refrigerant connections.
• Connect the air conditioner to grounding system before performing the electrical connection.
• When installing the unit, you shouldn't use inter connection wire.
ELCB
1
MCCB
3
ELCB
3
Indoor Unit
Indoor Unit
Power cable
Power cable
Outdoor Unit Communication cable
Grounding
Outdoor Unit Communication cable
Grounding
Power cable
Communication cable
Power cable
Communication cable
 If an outdoor unit is installed in a place in danger of an electric leak or submergence, you must install the ELB.
Example of Air Conditioner System
When using ELB for 1 phase
When using ELB for 3 phase 4 wires
RC＊＊＊DHXEA_IM_E_32793A(5).indd 9 2011-03-09 오후 9:31:49

AA
10
Connecting the cable
The power cable is not supplied with air conditioner.
For power cable, use the grade H07RN-F materials in 3Φ system.
Ssc(MVA) : 3.5(Type of outdoor unit A)
Ssc(MVA) : 3.8(Type of outdoor unit B and C)
The power cable is not supplied with air conditioner.
For power cable, use the grade H05RN-F materials in 1Φ system.
This equipment complies with "IEC 61000-3-12".
Type of outdoor unit Outdoor Power supply Power cable MAX. LENGTH Type GL
mm²,wires m A
A
RC090DHXEA
RC090PHXEA
RC090SHXEA
RC100DHXEA
RC100SHXEA
1Φ, 220-240V, 50Hz
2.5/3 L < 20m
30
4.0/3 20 < L < 50m
B
RC100PHXEA
RC125DHXEB
RC125PHXEA
RC140DHXEB
1Φ, 220-240V, 50Hz
2.5/3 L < 20m
30
4.0/3 20 < L < 50m
CRC140PHXEA
RC100ZHXEA 1Φ, 220-240V, 50Hz
4.0/3 L < 20m
40
6.0/3 20 < L < 50m
Power Cable Specifications
Single Phase
3 Phase
Type of outdoor unit Outdoor Power supply power cable MAX. LENGTH Type GL
mm²,wires m A
A
RC100DHXGA 3Φ, 380~415V, 50Hz
1.5/4 L < 20m
20
2.5/4 20 < L < 50m
B
RC100PHXGA
RC125DHXGA
RC125PHXGA
RC140DHXGA
3Φ, 380~415V, 50Hz
1.5/4 L < 20m
20
2.5/4 20 < L < 50m
C RC140PHXGA
3Φ, 380~415V, 50Hz
1.5/4 L < 20m
20
2.5/4 20 < L < 50m
RC���DHXEA_IM_E_32793A(6).indd 10 2011-03-24 �� 10:26:00

11
ENGLISH
 ForIndoorPowerCable,usethegradeH07RN-ForH05RN-Fmaterials.
Power supply Communation Cable Home Server
Power supply Max/Min(V)
Indoor Power Cable
1Φ,220-240V,50Hz ±10%
CV1.5mm²,3wires
0.75~1.25mm²,2wires 0.75mm²,2wires
Between Indoor unit and Outdoor unit Connection Cable Specifications(Common in use)
1-phase terminal block spec
3-phase terminal block spec
AC power : M5 screw
AC power : M4 screw
Wheninstallingtheindoorunitinacomputerroomornetworkroom,usethedouble
shielded(Tapealuminum/polyesterbraid+copper)cableofFROHH2Rtype.
1(L) 2(N) N
L
15 12
Communication : M3 screw
6.7
9.7
N
L3(T)
1(L) 2(N)
L2(S)
L1(R)
9.95 11.55
Communication : M3 screw
6.7
9.7
RC���DHXEA_IM_E_32793A(6).indd 11 2011-03-24 �� 10:02:42

AA
12
• 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 within ducts. (with appropriate IP rating and material selection for your application)
• Ensure that main supply connection is made through a switch that disconnects all poles, with contact gap of a least 3 mm.
• Devices disconnected from the power supply should be completely disconnected in the condition of overvoltage category.
• Keep distances of 50mm or more between power cable and communication cable.
Connecting the cable
Wiring Diagram of Power Cable
When using ELB for 1 phase and 3 phase
1(L) 2(N) N
L
ELB
MCCB
MCCB
N
L3(T)
1(L) 2(N)
L2(S)
L1(R)
Power Supply Electrical component box
Indoor Unit
 1 phase

3 phase
Indoor Power
Communication
cable
Main power cable
Cable clamp
 The appearance of the unit may be different from
the picture depending on the model.
Cable tie
Cable tie
Cable clamp
Communication
cable
3 Phase 4 Wires power
cable (AC 380V)
Connection
cord
RC＊＊＊DHXEA_IM_E_32793A(5).indd 12 2011-03-09 오후 9:31:50

13
ENGLISH
1 phase 3 phase
Wiring Diagram of Connection Cord
Connecting the Power Terminal
 Connect the cables to the terminal board using the compressed ring terminal.
 Cover a solderless ring terminal and a connector part of the power cable and then connect it.
1(L) 2(N) N
L
N
L3(T)
1(L) 2(N)
L2(S)
L1(R)
F2F1
Indoor Unit Indoor Unit
Main power cable
Cable clamp
Cable clamp
Indoor Power
Indoor Power
Communication cable Communication cable
Cable tie
Cable tie
1(L) 1(L)
F2 F2
F1 F1
2(N) 2(N)
• Lay the electrical wiring so that the front cover does not rise up when doing wiring work and attach the front cover securely.
• 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).
3 Phase 4 Wires power cable (AC 380V)
Silver solder
Nominal
dimensions
for cable
[mm2(inch2)]
Nominal
dimensions
for screw
[mm(inch)]
B D d1 E F L d2 t
Standard
dimension
[mm(inch)]
Allowance
[mm(inch)]
Standard
dimension
[mm(inch)]
Allowance
[mm(inch)]
Standard
dimension
[mm(inch)]
Allowance
[mm(inch)]
Min.
[mm
(inch)]
Min.
[mm
(inch)]
Max.
[mm
(inch)]
Standard
dimension
[mm(inch)]
Allowance
[mm(inch)]
Min.
[mm
(inch)]
4/6
(0.006/
0.009)
4(3/8) 9.5(3/8) ±0.2
(±0.007)
5.6(1/4) +0.3(+0.011)
-0.2(-0.007)
3.4(1/8) ±0.2
(±0.007) 6 (1/4)
5
(3/16) 20 (3/4) 4.3 (3/16)
+ 0.2(+0.007)
0(0)
0.9
(0.03)
8(3/16) 15(9/16) 9
(3/8) 28.5 (1-1/8) 8.4 (1-3/16)
+ 0.4(+0.015)
0(0)
10(0.01) 8(3/16) 15(9/16) ±0.2
(±0.007)
7.1(1/4) +0.3(+0.011)
-0.2(-0.007)
4.5(3/16) ±0.2
(±0.007) 7.9 (5/16) 9 (3/8) 30 (1-3/16) 8.4 (1-3/16)
+ 0.4(+0.015)
0(0)
1.15
(0.04)
16(0.02) 8(3/16) 16(10/16) ±0.2
(±0.007)
9(3/8) +0.3(+0.011)
-0.2(-0.007)
5.8(1/4) ±0.2
(±0.007) 9.5 (5/16) 13 (1/2) 33 (1-5/16) 8.4 (1-3/16)
+ 0.4(+0.015)
0(0)
1.45
(0.05)
25(0.03)
8(3/16) 12(1/2) ±0.3
(±0.011)
11.5(7/16) +0.5(+0.019)
-0.2(-0.007)
7.7(5/16) ±0.2
(±0.007) 11 (3/8)
15
(5/8) 34
(1-3/8)
8.4
(1-3/16)
+ 0.4(+0.015)
0(0)
1.7
(0.06)
8(3/16) 16.5(10/16) 13
(1/2) 8.4 (1-3/16)
35(0.05)
8(3/16) 16(10/16) ±0.3
(±0.011)
13.3(1/2) +0.5(+0.019)
-0.2(-0.007)
9.4(3/8) ±0.2
(±0.007) 12.5 (1/2)
13
(1/2) 38 (1-1/2) 8.4 (1-3/16)
+ 0.4(+0.015)
0(0)
1.8
(0.07)
8(3/16) 22(7/8) 13
(1/2)
43
(1- 11/16)
8.4
(1-3/16)
50(0.07) 8(3/16) 22(7/8) ±0.3
(±0.011)
13.5(1/2) +0.5(+0.019)
-0.2(-0.007)
11.4(7/16) ±0.3
(±0.011) 17.5 (11/16) 14 (9/16) 50 (2) 8.4 (1-3/16)
+ 0.4(+0.015)
0(0)
1.8
(0.07)
70(0.10) 8(3/16) 24(1) ±0.4
(±0.015)
17.5(11/16) +0.5(+0.019)
-0.4(-0.015)
13.3(1/2) ±0.4
(±0.015) 18.5 (3/4) 20 (3/4) 51 (2) 8.4 (1-3/16)
+ 0.4(+0.015)
0(0)
2.0
(0.078)
RC＊＊＊DHXEA_IM_E_32793A(5).indd 13 2011-03-09 오후 9:31:52

14
AA
Tightening Torque (kgf • cm)
M3 5.0~6.0 Communication:F1,F2
M4 12.0~15.0 3phaseACpower:1(L),2(N),L1(R),L2(S),L3(T),N
M5 20.0~25.0 1phaseACpower:1(L),2(N),L,N
• Whenconnectingcables,youcanconnectthecablestotheelectricalpartorconnectthemthroughtheholes
belowdependingonthespot.
• Run transmission wiring between the indoor and outdoor units through a conduit to protect against external
forces, and feed the conduit through the wall together with refirgerant piping.
• Removeallburrsattheedgeoftheknock-outholeandsecurethecabletotheoutdoorknock-outusingliningand
bushingwithanelectricalinsulationsuchasrubberandsoon.
• 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.
Connecting the refrigerant pipe
Refrigerant piping system
indoor
indoor
indoor
outdoor
outdoor
L1
D
L1
L2
L3
h1
h2
h1
Y-jointmodel:MXJ-YA1509K[UsedincommonwithDVM]
Items Maximum allowable length
Single installation DPM installation
Totalpipelength(L1+L2+L3) -75m
Mainpipe(L1) L m 50 m
Max,lengthbetweenindoorunits(D) - 10 m
Max,lengthafterbranch - 15 m
Max,heightdierencebetweenoutdoorandindoorunits(h1) ± h m ±30m
Heightdierencebetweenindoorunits(h2) - ±0.5m
Pipelengthdierenceafterbranch(L2-L3) - ±1m
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,remayoccurcausedbyarc.Iftheterminalisconnectedtoormly,theterminalmaybedamaged.
Connecting the cable
RC���DHXEA_IM_E_32793A(6).indd 14 2011-03-24 �� 10:02:42

ENGLISH
15
• Afterconnectingpipeswithknock-outtreatment,plugthespace.
• Followingthepipeconnection,makesuretoproceedpreciselytopreventinterferencewiththeinternalparts.
 Theappearanceoftheunitmaybedifferentfromthediagramdependingonthemodel.
Makeatleastoneround:
Itwillreducenoiseandvibration
Outer diameter [mm] Minimum thickness [mm] Temper grade
ø6.35 0.7
C1220T-O
ø9.52 0.7
ø12.70 0.8
ø15.88 1.0
ø15.88 0.8 C1220T-1/2H
OR
C1220T-H
ø19.05 0.9
ø22.23 0.9
Tempergradeandminimumthicknessoftherefrigerantpipe
L (m) h (m) Applicable outdoor unit models
SINGLE
50 30 RC090DHXEA/RC090SHXEA/RC100DHXEA/RC100DHXGA/RC090PHXEA/RC100SHXEA
75 30 RC125DHXEB/RC125DHXGA/RC140DHXEB/RC140DHXGA/
RC100PHXEA/RC100PHXGA/RC125PHXEA/RC125PHXGA/RC140PHXEA/RC140PHXGA/RC100ZHXEA
DPMallowed RC140DHXEA/RC140DHXGA/RC140PHXEA/RC140PHXGA
• MakesuretouseC1220T-1/2H(Semi-hard)pipeformorethanØ19.05mm.IncaseofusingC1220T-O(Soft)
pipeforØ19.05mm,pipemaybebroken,whichcanresultinaninjury.
RC���DHXEA_IM_E_32793A(6).indd 15 2011-03-24 �� 11:07:45

16
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 aect 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 gure.
1. Connect each assembly pipe to the appropriate valve on the outdoor unit and tighten the are nut.
2. Referring to the illustration opposite, tighten the are nut on section B rst
manually and then with a torque wrench, applying the following torque.
3. Connect the charging hose of low pressure side of manifold gauge to the
packed valve having a service port as shown at the gure.
4. Open the valve of the low pressure side of manifold gauge counterclockwise.
• Make 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 -).
Outer Diameter (D) Torque (N•m)
ø6.35 mm(1/4") 18
ø9.52 mm(3/8") 42
ø12.70 mm(1/2") 55
ø15.88 mm(5/8") 65
ø19.05 mm(3/4") 100
A
B
C
D
Outdoor unit
Vacuum
pump
 The designs and shape are subject to
change according to the model.
• When installing, make sure there is no leakage. When recovering the refrigerant, ground the compressor rst
before removing the connection pipe. If the refrigerant pipe is not properly connected and the compressor
works with the service valve open, the pipe inhales the air and it makes the pressure inside of the refrigerant
cycle abnormally high. It may cause explosion and injury.
RC＊＊＊DHXEA_IM_E_32793A(5).indd 16 2011-03-09 오후 9:32:35

17
ENGLISH
• 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), s uitable 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 “Connecting refrigerant
pipe section”.
DPM allowable Outdoor unit models Indoor unit models
RC140PHXEA or RC140PHXGA NS0714DXEA x2
RC140DHXEB or RC140DHXGA NS0714DXEA x2
DPM allowable Outdoor and indoor unit models
Space requirements for indoor and outdoor units and piping installation
- Refer to page 14 installation specication.
- Two indoor units should be installed in one area which is not divided by a wall.
- The distance between two indoor units should be within a straight-line of 10m.
- After branching, the distance between the piping connected to the two indoor units should be within 1m.
- The height dierence between two units should be within 0.5m.
- When connecting piping, the Y-joint uses the MXJ-YA1509K material which is commonly used with DVM PLUS III .
(The Y-joint should be installed horizontally and rmly insulated with the provided insulator. – Ceiling leakage protection)
B(liquid) A(gas)
5. Purge the air from the system using vacuum pump for about 10 minutes.
 Close the valve of the low pressure side of manifold gauge clockwise.
 Make sure that pressure gauge shows -0.1MPa(-76cmHg) after about 10
minutes. This procedure is very important to avoid a gas leak.
 Turn o 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.
7. Mount the valve stem nuts and the service port cap to the valve, and
tighten them at the torque of 183kgf•cm with a torque wrench.
8. Check for gas leakage.
 At this time, especially check for gas leakage from the 3-way valve’s stem
nuts(A port), and from the service port cap.
Installing DPM
RC＊＊＊DHXEA_IM_E_32793A(5).indd 17 2011-03-09 오후 9:32:36

18
AA
Instruction for installation and operation
- You should install the DPM according to the above installation specication and eliminate the factors that give electrical
load to the both indoor units when installing and operating. (Heater / window / front door / ventilation / partition that divides space)
- You should provide sucient instructions about the operation method and specication features to users and ll in caution
phrases on wired remote controller when necessary.
▶ <The air-conditioners in this area are special type to be controlled simultaneously.>
Set up indoor quantity by key switch(K1, K2)
- Press and hold K1 switch to enter the setting mode on the number of the installed indoor unit : Check “A0” sign on 7-segment
▶ Press K2 switch to set the number of the installed indoor unit :
Ex) If there are two indoor units, press K2 switch twice, and check "A2" sign on 7-segment.
▶ Press K1 switch to complete setting the number of the installed indoor unit : Check "AA" sign on 7-segment.
Y-joint for indoor unit
MXJ-YA1509

ID
Φ9.7
ID
Φ16.1
28 35
80
80
127 147
255 282
Liquid Gas
② X 2EA① X 2EA
127 147
100 100
ID
Φ12.9
ID
Φ19.2
ID
Φ12.9
ID
Φ19.2
ID
Φ12.9
ID
Φ19.2
Operation and specication
- The two sets of the indoor units with DPM installation (2 EA) which are controlled by wired and wireless remote controller
work equally. (All controls such as ON/OFF, cooling/heating/dehumidication/ventilation, high/ medium/low wind, xing
louver angle/swing are equally applied.)
- Thermo OFF which stops when indoor temperature reaches set temperature works by the average sensor value of the
indoor temperature of two indoor units.
- When either of the two indoor units has a problem, the two indoor units protect operation or stop working.
Connecting communication line and wired remote controller
Outdoor
unit
Indoor unit #1 Indoor unit #2
Remote control
F1/F2 F1/F2 F1/F2
L/N L/N L/N
Installing DPM
RC＊＊＊DHXEA_IM_E_32793A(5).indd 18 2011-03-09 오후 9:32:37

ENGLISH
19
AACutting/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 aa 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.
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
• 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
Outer Diameter (D) Depth (A)
ø6.35 mm(1/4") 1.3 mm
ø9.52 mm(3/8") 1.8 mm
ø12.70 mm(1/2") 2.0 mm
ø15.88 mm(5/8") 2.2 mm
ø19.05 mm(3/4") 2.2 mm
Uneven
Thickness
CrackedDamaged
Surface
InclinedCorrect
RC＊＊＊DHXEA_IM_E_32793A(5).indd 19 2011-03-09 오후 9:32:37

20
AAPerforming leak tests
 The designs and shape are subject to
change according to the model.
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.
Once you have completed all the connections, check for possible leaks using
leak detector specically designed for HFC refrigerants.
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
50mm
‘B’mm
13mm
When using the air conditioner in the heating mode, ice may accumulate . During de-icing (defrost operation), the
condensed water must be drained o safely. 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 gure.
2. Insert the drain plug into the hole on the underside of the outdoor unit.
3. Connect the drain hose to the drain plug.
4. Ensure that the drained water runs o correctly and safely.
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 an insulator around each
refrigerant pipe.
NBR(T13.0 or thicker)
• When insulate the pipe, be sure to overlap the insulation.
• You have to use more than 120°C insulation(T13.0 or thicker Acrylonitrile
Butadien Rubber) for the gas refrigerant pipe.
• 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.
• When insulating the pipe, use non-slit insulator.
5. Be sure to plug the rest of drain holes not connected with drain plugs using drain caps.
DRAIN CAP(3EA)
DRAIN PLUG(1EA)
A(Gas)
B(Liquid)
RC＊＊＊DHXEA_IM_E_32793A(5).indd 20 2011-03-09 오후 9:32:42