Mitsubishi Electric PUHZ-RP HA5 User manual
FOR INSTALLER
Air-Conditioners
PUHZ-RP•HA5
PUHZ-RP•KA2
INSTALLATION MANUAL
For safe and correct use, read this manual and the indoor unit installation manual thoroughly before installing
the air-conditioner unit.
English
2
Contents
1. Safety precautions
►
Before installing the unit, make sure you read all the “Safety precautions”.
►Pleasereporttoortakeconsentbythesupplyauthoritybeforeconnec-
tion to the system.
After installation work has been completed, explain the “Safety Precautions,” use,
and maintenance of the unit to the customer according to the information in the
Operation Manual and perform the test run to ensure normal operation. Both the
Installation Manual and Operation Manual must be given to the user for keeping.
These manuals must be passed on to subsequent users.
: Indicates a part which must be grounded.
Warning:
Carefullyreadthelabelsafxedtothemainunit.
Warning:
• Theunitmust notbeinstalledbytheuser.Askadealeroran authorized
technician to install the unit. If the unit is installed incorrectly, water leak-
age,electricshock,orremayresult.
• For installation work, follow the instructions in the Installation Manual and
usetoolsandpipecomponents specicallymade forusewith R410Are-
frigerant.TheR410ArefrigerantintheHFCsystemispressurized1.6times
the pressure of usual refrigerants. If pipe components not designed for
R410Arefrigerantareusedandtheunitisnotinstalledcorrectly,thepipes
mayburstand causedamageorinjuries.Inaddition,waterleakage,elec-
tricshock,orremayresult.
• Theunitmustbeinstalledaccording tothe instructionsinordertomini-
mizetheriskofdamagefromearthquakes,typhoons,orstrongwinds.An
incorrectlyinstalledunitmayfalldownandcausedamageorinjuries.
• Theunitmust besecurelyinstalled onastructurethat cansustainits
weight.If the unit is mountedon an unstablestructure, it mayfall down
andcausedamageorinjuries.
• Iftheairconditionerisinstalledinasmallroom,measuresmustbetaken
topreventtherefrigerantconcentration intheroom fromexceedingthe
safety limit in the event of refrigerant leakage. Consult a dealer regarding
theappropriatemeasurestopreventtheallowableconcentrationfrombe-
ingexceeded.Shouldtherefrigerantleakandcausetheconcentrationlimit
tobeexceeded,hazardsduetolackofoxygenintheroommayresult.
• Ventilate the room if refrigerant leaks during operation. If refrigerant comes
intocontactwithaame,poisonousgaseswillbereleased.
• Allelectricworkmustbeperformedbyaqualiedtechnicianaccordingto
local regulations and the instructions given in this manual. The units must
bepoweredbydedicatedpower linesandthe correctvoltageandcircuit
breakersmustbeused.Powerlineswithinsufcientcapacityorincorrect
electricalworkmayresultinelectricshockorre.
• Use C1220copper phosphorus,forcopperand copper alloyseamless
pipes, to connect the refrigerant pipes. If the pipes are not connected cor-
rectly,theunitwillnotbeproperlygroundedandelectricshockmayresult.
• Useonlyspeciedcablesforwiring.Theconnectionsmustbemadese-
curelywithouttensiononthe terminals.Ifthecablesare connectedor
installedincorrectly,overheatingorremayresult.
• Theterminalblockcoverpaneloftheoutdoorunitmustbermlyattached.
If the cover panel is mounted incorrectly and dust and moisture enter the
unit,electricshockorremayresult.
• Useonlyspeciedcablesforwiring.Thewiringconnectionsmustbemade
securely with no tension applied on the terminal connections. Also, never
splicethecablesforwiring(unlessotherwiseindicatedinthisdocument).
Failuretoobservetheseinstructionsmayresultinoverheatingorare.
• Do not alter the unit. Consult a dealer for repairs. If alterations or repairs
arenotperformedcorrectly,water leakage,electricshock, orremayre-
sult.
• The user should never attempt to repair the unit or transfer it to another
location. If the unit is installed incorrectly, water leakage, electric shock,
orremayresult.Iftheairconditioner mustberepairedormoved,aska
dealeroranauthorizedtechnician.
• Afterinstallationhasbeencompleted,checkforrefrigerantleaks.Ifrefrig-
erantleaksintotheroomandcomesintocontactwiththeameofaheater
orportablecookingrange,poisonousgaseswillbereleased.
• When installing or relocating, or servicing the air conditioner, use only the
speciedrefrigerant(R410A) tochargetherefrigerantlines.Donot mixit
with any other refrigerant and do not allow air to remain in the lines.
Ifairis mixedwiththerefrigerant,thenitcanbe thecauseof abnormal
high pressureintherefrigerant line,andmayresultinanexplosion and
otherhazards.
The use of any refrigerant other than that specified for the system will
causemechanicalfailureorsystemmalfunctionorunitbreakdown.Inthe
worst case, this could lead to a serious impediment to securing product
safety.
1.1. Before installation
Caution:
• Do not use the unit in an unusual environment. If the air conditioner is
installedinareasexposedtosteam,volatileoil(includingmachineoil),or
sulfuricgas,areasexposedtohighsaltcontentsuchasthe seaside,or
areaswheretheunitwillbecoveredbysnow,theperformancecanbesig-
nicantlyreducedandtheinternalpartscanbedamaged.
• Donotinstalltheunitwhere combustiblegasesmay leak,beproduced,
ow,oraccumulate.Ifcombustiblegasaccumulatesaroundtheunit,re
orexplosionmayresult.
Warning:
Describesprecautionsthat mustbeobservedtopreventdangerofinjuryor
death to the user.
Caution:
Describesprecautionsthatmustbeobservedtopreventdamagetotheunit.
• The outdoor unit produces condensation during the heating operation.
Make sure to provide drainage around the outdoor unit if such condensa-
tion is likely to cause damage.
• Wheninstallingtheunitinahospitalorcommunicationsoffice,bepre-
pared for noise and electronic interference. Inverters, home appliances,
high-frequencymedicalequipment,andradiocommunicationsequipment
cancausetheairconditioner tomalfunctionor breakdown.Theaircon-
ditionermayalso affectmedicalequipment, disturbingmedicalcare, and
communicationsequipment,harmingthescreendisplayquality.
1.Safetyprecautions.................................................. 2
2.Installationlocation................................................. 3
3.Installingtheoutdoorunit............................................ 5
4. Installing the refrigerant piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5.Drainagepipingwork................................................ 9
6.Electricalwork.................................................. 10
7.Testrun....................................................... 12
8. Initial settings for refrigerant leakage detection function . . . . . . . . . . . . . . . . . . 13
9.SpecialFunctions ............................................... 13
10.Systemcontrol(Fig.10-1)........................................ 14
1.2.Beforeinstallation(relocation)
Caution:
• Beextremelycareful whentransportingor installingtheunits.2ormore
personsareneededtohandletheunit,asitweighs20kgormore.Donot
graspthepackagingbands.Wearprotective glovestoremove theunit
fromthepackagingandtomoveit,asyoucaninjureyourhandsonthe
nsortheedgeofotherparts.
• Be sure to safely dispose of the packaging materials. Packaging materials,
suchas nailsandothermetalorwoodenpartsmaycausestabsor other
injuries.
• The base and attachments of the outdoor unit must be periodically
checked for looseness, cracks or other damage. If such defects are left un-
corrected,theunitmayfalldownandcausedamageorinjuries.
• Do not clean the air conditioner unit with water. Electric shock may result.
• Tightenallare nutstospecicationusingatorquewrench.Iftightened
toomuch,thearenutcanbreakafteranextendedperiodandrefrigerant
can leak out.
950
330+30
943 (1350)
175
600
370
3
1. Safety precautions
1.3. Before electric work
Caution:
• Besureto installcircuitbreakers.Ifnotinstalled,electricshockmayre-
sult.
• Forthepowerlines,usestandardcablesofsufcientcapacity.Otherwise,
ashortcircuit,overheating,orremayresult.
• Wheninstallingthepowerlines,donotapplytensiontothecables.Ifthe
connectionsare loosened,thecablescansnapor breakandoverheating
orremayresult.
• Be sure to ground the unit. Do not connect the ground wire to gas or water
pipes, lightning rods, or telephone grounding lines. If the unit is not prop-
erly grounded, electric shock may result.
• Use circuitbreakers(groundfaultinterrupter,isolatingswitch(+Bfuse),
andmoldedcasecircuitbreaker)withthespeciedcapacity.Ifthecircuit
breakercapacity islargerthan thespeciedcapacity,breakdownor re
may result.
1.4.Beforestartingthetestrun
Caution:
• Turnonthemainpowerswitchmorethan12hoursbeforestartingopera-
tion.Startingoperationjustafterturningonthepowerswitchcanseverely
damage the internal parts. Keep the main power switch turned on during
the operation season.
• Before starting operation, check that all panels, guards and other protec-
tive parts are correctly installed. Rotating, hot, or high voltage parts can
causeinjuries.
• Do not touch any switch with wet hands. Electric shock may result.
• Donottouchtherefrigerantpipeswithbarehandsduringoperation.The
refrigerantpipesarehotorcolddependingontheconditionoftheowing
refrigerant.Ifyoutouchthepipes,burnsorfrostbitemayresult.
• Afterstoppingoperation,besuretowaitatleast5minutesbeforeturning
offthemainpowerswitch. Otherwise,waterleakageorbreakdown may
result.
1.5.UsingR410Arefrigerantairconditioners
Caution:
•DonotuserefrigerantotherthanR410Arefrigerant.Ifanotherrefrigerantis
used, the chlorine will cause the oil to deteriorate.
•UsethefollowingtoolsspecicallydesignedforusewithR410Arefrigerant.
ThefollowingtoolsarenecessarytouseR410Arefrigerant.Contactyour
nearestdealerforanyquestions.
Tools (for R410A)
Gauge manifold Flare tool
Charge hose Size adjustment gauge
Gas leak detector Vacuum pump adapter
Torque wrench Electronic refrigerant charging scale
• Besuretousethecorrecttools.Ifdust,debris,ormoistureentersthere-
frigerant lines, refrigeration oil deterioration may result.
• Do not use a charging cylinder. If a charging cylinder is used, the compo-
sitionoftherefrigerantwillchangeandtheefciencywillbelowered.
2. Installation location
Fig. 2-1
2.1.Refrigerantpipe(Fig.2-1)
►Checkthatthe differencebetweentheheightsof theindoorand outdoor
units,the lengthof refrigerantpipe,andthenumberofbendsinthepipe
arewithinthelimitsshownbelow.
Models APipe length
(one way)
BHeight
difference
C
Number of bends
(one way)
RP71 Max. 50 m Max. 30 m Max. 15
RP100, 125, 140 Max. 75 m Max. 30 m Max. 15
RP170, 200 Max. 75 m Max. 30 m Max. 15
• Height difference limitations are binding regardless of which unit, indoor or out-
door, is positioned higher.
DIndoor unit
EOutdoor unit
A
B
E
D
C
• Use C1220 copper phosphorus, for copper and copper alloy seamless
pipes, to connect the refrigerant pipes. Make sure the insides of the pipes
are clean and do not contain any harmful contaminants such as sulfuric
compounds,oxidants,debris,ordust.Usepipeswith thespecied thick-
ness.(Referto4.1.)Notethefollowingifreusingexistingpipesthatcarried
R22 refrigerant.
- Replace the existing are nuts and are the ared sections again.
- Do not use thin pipes. (Refer to 4.1.)
•Storethepipestobeusedduringinstallationindoorsandkeepbothends
ofthepipessealeduntiljustbeforebrazing.(Leaveelbowjoints,etc.in
theirpackaging.)Ifdust,debris,ormoistureenterstherefrigerantlines,oil
deteriorationorcompressorbreakdownmayresult.
•Useesteroil,etheroil,alkylbenzeneoil(smallamount)astherefrigeration
oilappliedtothearedsections.Ifmineraloilismixedintherefrigeration
oil, oil deterioration may result.
Fig. 1-1
1.6.Accessoriesofoutdoorunit(Fig.1-1)(RP170/200)
The parts show in the left are the accessories of this unit, which are afxed to the
inside of the service panel.
1Joint pipe.........×1
4
2. Installation location
2.4.Ventilationandservicespace
2.4.1.Windylocationinstallation
When installing the outdoor unit on a rooftop or other location unprotected from
the wind, situate the air outlet of the unit so that it is not directly exposed to strong
winds. Strong wind entering the air outlet may impede the normal airflow and a
malfunction may result.
The following shows 3 examples of precautions against strong winds.
1Face the air outlet towards the nearest available wall about 50 cm away from the
wall. (Fig. 2-3)
2Install an optional air guide if the unit is installed in a location where strong winds
from a typhoon, etc. may directly enter the air outlet. (Fig. 2-4)
AAir outlet guide
3Position the unit so that the air outlet blows perpendicularly to the seasonal wind
direction, if possible. (Fig. 2-5)
BWind direction
Fig.2-4
Fig. 2-3
A
B
Fig. 2-5
2.4.2.Wheninstallingasingleoutdoorunit(Refertothelastpage)
Minimum dimensions are as follows, except for Max., meaning Maximum dimen-
sions, indicated.
The gures in parentheses are for RP71 models.
Refer to the gures for each case.
1Obstacles at rear only (Fig. 2-6)
2Obstacles at rear and above only (Fig. 2-7)
3Obstacles at rear and sides only (Fig. 2-8)
4Obstacles at front only (Fig. 2-9)
*When using an optional air outlet guide, the clearance for RP100 - 200 models is 500 mm
or more.
5Obstacles at front and rear only (Fig. 2-10)
*When using an optional air outlet guide, the clearance for RP100 - 200 models is 500 mm
or more.
6Obstacles at rear, sides, and above only (Fig. 2-11)
• Do not install the optional air outlet guides for upward airow.
2.4.3.Wheninstallingmultipleoutdoorunits(Refertothelastpage)
Leave 10 mm space or more between the units.
The gures in parentheses are for RP71 models.
1Obstacles at rear only (Fig. 2-12)
2Obstacles at rear and above only (Fig. 2-13)
• No more than 3 units must be installed side by side. In addition, leave space as shown.
• Do not install the optional air outlet guides for upward airow.
3Obstacles at front only (Fig. 2-14)
*When using an optional air outlet guide, the clearance for RP100 - 200 models is 1000 mm
or more.
4Obstacles at front and rear only (Fig. 2-15)
*When using an optional air outlet guide, the clearance for RP100 - 200 models is 1000 mm
or more.
5Single parallel unit arrangement (Fig. 2-16)
* When using an optional air outlet guide installed for upward airow, the clearance is
1000 (500) mm or more.
6Multiple parallel unit arrangement (Fig. 2-17)
* When using an optional air outlet guide installed for upward airow, the clearance is
1500 (1000) mm or more.
7Stacked unit arrangement (Fig. 2-18)
• The units can be stacked up to 2 units high.
• No more than 2 stacked units must be installed side by side. In addition, leave space as
shown.
2.2. Choosing the outdoor unit installation location
• Avoid locations exposed to direct sunlight or other sources of heat.
• Select a location from which noise emitted by the unit will not inconvenience
neighbors.
• Select a location permitting easy wiring and pipe access to the power source
and indoor unit.
• Avoid locations where combustible gases may leak, be produced, ow, or accu-
mulate.
• Note that water may drain from the unit during operation.
• Select a level location that can bear the weight and vibration of the unit.
• Avoid locations where the unit can be covered by snow. In areas where heavy
snow fall is anticipated, special precautions such as raising the installation loca-
tion or installing a hood on the air intake must be taken to prevent the snow from
blocking the air intake or blowing directly against it. This can reduce the airow
and a malfunction may result.
• Avoid locations exposed to oil, steam, or sulfuric gas.
• Use the transportation handles of the outdoor unit to transport the unit. If the unit
is carried from the bottom, hands or ngers may be pinched.
2.3.Outlinedimensions(Outdoorunit)(Fig.2-2)
Fig. 2-2
1050
330+25
1338
225
600
370
■RP71 ■RP100-200
950
330+30
943
175
600
370
5
Fig. 3-1
3. Installing the outdoor unit
• Be sure to install the unit in a sturdy, level surface to prevent rattling noises
during operation. (Fig. 3-1)
<Foundation specications>
Foundation bolt M10 (3/8")
Thickness of concrete 120 mm
Length of bolt 70 mm
Weight-bearing capacity 320 kg
• Make sure that the length of the foundation bolt is within 30 mm of the bottom
surface of the base.
• Secure the base of the unit rmly with four-M10 foundation bolts in sturdy loca-
tions.
Installing the outdoor unit
• Do not block the vent. If the vent is blocked, operation will be hindered and
breakdown may result.
• In addition to the unit base, use the installation holes on the back of the unit to
attach wires, etc., if necessary to install the unit. Use self-tapping screws (ø5 ×
15 mm or less) and install on site.
Warning:
• Theunitmustbe securelyinstalledon astructurethat cansustainits
weight.Iftheunitismountedonan unstablestructure,it mayfalldown
andcausedamageorinjuries.
• Theunitmustbeinstalledaccordingtotheinstructionsinordertomini-
mizetheriskofdamagefromearthquakes,typhoons,orstrongwinds.An
incorrectlyinstalledunitmayfalldownandcausedamageorinjuries.
(mm)
M10 (3/8") bolt
Base
As long as possible.
Vent
Max. 30
Set deep in the ground
600 600Min. 360
175 175
Min. 10
950
25 330
370
4.Installingtherefrigerantpiping
4.1.PrecautionsfordevicesthatuseR410Arefrigerant
• Referto1.5.for precautionsnotincludedbelowonusingairconditioners
withR410Arefrigerant.
• Useesteroil,etheroil,alkylbenzeneoil(smallamount)astherefrigerationoil
appliedtothearedsections.
• UseC1220copperphosphorus,forcopperandcopperalloyseamlesspipes,
to connect the refrigerant pipes. Use refrigerant pipes with the thicknesses
specifiedinthe tabletothe below.Makesure theinsidesof thepipesare
clean and do not contain any harmful contaminants such as sulfuric com-
pounds,oxidants,debris,ordust.
Always apply no-oxidationbrazingwhen brazing the pipes, otherwise,the
compressorwillbedamaged.
Warning:
When installing or relocating, or servicing the air conditioner, use only the
speciedrefrigerant(R410A)tochargetherefrigerantlines.Donotmixitwith
any other refrigerant and do not allow air to remain in the lines.
Ifairismixedwiththerefrigerant,thenitcanbethecauseofabnormalhigh
pressureintherefrigerantline,andmayresultinanexplosionandotherhaz-
ards.
Theuseofanyrefrigerantotherthanthatspeciedforthesystemwillcause
mechanicalfailureorsystemmalfunction orunitbreakdown.Inthe worst
case, this could lead to a serious impediment to securing product safety.
Pipe size (mm) [6.35 [9.52 [12.7 [15.88 [19.05 [22.2 [25.4 [28.58
Thickness (mm) 0.8 0.8 0.8 1.0 1.0 1.0 1.0 1.0
• Donotusepipesthinnerthanthosespeciedabove.
• Use1/2HorHpipesifthediameteris22.2mmorlarger.
■RP71
■RP71
■RP100-200
■RP100-200
600 600
33025
370
Min. 460
225 225
1050Min. 10
90
°±
0.5
°
øA
R0.4~R0.8
45
°±
2
°
90
°±
0.5
°
øA
R0.4~R0.8
45
°±
2
°
6
4.2.Connectingpipes(Fig.4-1)
• When commercially available copper pipes are used, wrap liquid and gas pipes
with commercially available insulation materials (heat-resistant to 100 °C or
more, thickness of 12 mm or more).
• The indoor parts of the drain pipe should be wrapped with polyethylene foam
insulation materials (specic gravity of 0.03, thickness of 9 mm or more).
• Apply thin layer of refrigerant oil to pipe and joint seating surface before tighten-
ing are nut. A
• Use 2 wrenches to tighten piping connections. B
• Use leak detector or soapy water to check for gas leaks after connections are
completed.
• Apply refrigerating machine oil over the entire are seat surface. C
• Use the are nuts for the following pipe size. D
RP71
RP100 - 140 RP170,200
Gas side Pipe size (mm) [15.88 [15.88 [25.4
Liquid side Pipe size (mm) [9.52 [9.52 [9.52
• When bending the pipes, be careful not to break them. Bend radii of 100 mm to
150 mm are sufcient.
• Make sure the pipes do not contact the compressor. Abnormal noise or vibration
may result.
1Pipes must be connected starting from the indoor unit.
Flare nuts must be tightened with a torque wrench.
2Flare the liquid pipes and gas pipes and apply a thin layer of refrigeration oil (Ap-
plied on site).
• When usual pipe sealing is used, refer to Table 1 for aring of R410A refrigerant
pipes.
The size adjustment gauge can be used to conrm A measurements.
A(Fig. 4-1)
Copper pipe O.D.
(mm)
Flare dimensions
øA dimensions (mm)
ø6.35 8.7 - 9.1
ø9.52 12.8 - 13.2
ø12.7 16.2 - 16.6
ø15.88 19.3 - 19.7
ø19.05 23.6 - 24.0
B(Fig. 4-1)
Copper pipe O.D.
(mm)
Flare nut O.D.
(mm)
Tightening torque
(N·m)
ø6.35 17 14 - 18
ø6.35 22 34 - 42
ø9.52 22 34 - 42
ø12.7 26 49 - 61
ø12.7 29 68 - 82
ø15.88 29 68 - 82
ø15.88 36 100 - 120
ø19.05 36 100 - 120
AFlare cutting dimensions
BFlare nut tightening torque
A B
C
D
ADie
BCopper pipe
A
B
Fig.4-1
Fig.4-2
A
Table 1 (Fig. 4-2)
Copper pipe O.D.
(mm)
A (mm)
Flare tool for R410A Flare tool for R22·R407C
Clutch type
ø6.35 (1/4") 0 - 0.5 1.0 - 1.5
ø9.52 (3/8") 0 - 0.5 1.0 - 1.5
ø12.7 (1/2") 0 - 0.5 1.0 - 1.5
ø15.88 (5/8") 0 - 0.5 1.0 - 1.5
ø19.05 (3/4") 0 - 0.5 1.0 - 1.5
3
Use the following procedure for connecting the gas-side piping. (Fig.4-3) (RP170 / 200)
1 Braze the EJoint pipe provided to the outdoor unit using locally procured braz-
ing materials and CLocal piping without oxygen.
2 Connect the EJoint pipe to the gas-side Stop valve.
Use 2 wrenches to tighten the are nut.
* If order is reversed, refrigerant leak occurs because of the part damaging by
brazing re.
• For PEA-RP170, 200WHA
The method of pipe connection is brazing connection.
PEA-170 PEA-200
Gas side Pipe size (mm) [25.4 [25.4
Liquid side Pipe size (mm) [9.52 [9.52
4.Installingtherefrigerantpiping
Fig.4-4
AFront piping cover
BPiping cover
CStop valve
DService panel
EBend radius : 100 mm - 150 mm
4.3.Refrigerantpiping(Fig.4-4)
Remove the service panel D(3 screws) and the front piping cover A(2 screws)
and rear piping cover B(2 screws: RP71) (4 screws: RP100 - 200).
1Perform refrigerant piping connections for the indoor/outdoor unit when the out-
door unit’s stop valve is completely closed.
2Vacuum-purge air from the indoor unit and the connection piping.
3After connecting the refrigerant pipes, check the connected pipes and the indoor
unit for gas leaks. (Refer to 4.4 Refrigerant pipe airtight testing method)
4A high-performance vacuum pump is used at the stop valve service port to main-
tain a vacuum for an adequate time (at least one hour after reaching –101 kPa
(5 Torr)) in order to vacuum dry the inside of the pipes. Always check the degree
of vacuum at the gauge manifold. If there is any moisture left in the pipe, the de-
gree of vacuum is sometimes not reached with short-time vacuum application.
After vacuum drying, completely open the stop valves (both liquid and gas) for
the outdoor unit. This completely links the indoor and outdoor refrigerant circuits.
•
If the vacuum drying is inadequate, air and water vapor remain in the refriger-
ant circuits and can cause abnormal rise of high pressure, abnormal drop of
low pressure, deterioration of the refrigerating machine oil due to moisture, etc.
• If the stop valves are left closed and the unit is operated, the compressor and
control valves will be damaged.
• Use a leak detector or soapy water to check for gas leaks at the pipe connec-
tion sections of the outdoor unit.
• Do not use the refrigerant from the unit to purge air from the refrigerant lines.
• After the valve work is completed, tighten the valve caps to the correct torque:
20 to 25 N·m (200 to 250 kgf·cm).
Failure to replace and tighten the caps may result in refrigerant leakage. In
addition, do not damage the insides of the valve caps as they act as a seal to
prevent refrigerant leakage.
5Use sealant to seal the ends of the thermal insulation around the pipe connec-
tion sections to prevent water from entering the thermal insulation.
Fig.4-3
AStop valve
BSeal section
CLocal piping
DDouble spanner section
EJoint pipe
FPipe cover
Warning:
Wheninstallingtheunit,securelyconnecttherefrigerantpipesbeforestart-
ing the compressor.
7
4.Installingtherefrigerantpiping
A
A Stop valve <Liquid side>
B Stop valve <Gas side>
CService port
DOpen/Close section
ELocal pipe
FSealed, same way for gas side
GPipe cover
H Do not use a wrench here.
Refrigerant leakage may result.
I Use 2 wrenches here.
D
B
C
G
F
E
D
C
A
Fig.4-5
Fig.4-6 Fig.4-7
4.4.Refrigerantpipeairtighttestingmethod(Fig.4-5)
(1)
Connect the testing tools.
• Make sure the stop valves ABare closed and do not open them.
• Add pressure to the refrigerant lines through the service port Cof the liquid
stop valve A.
(2)
Do not add pressure to the specied pressure all at once; add pressure little by
little.
1Pressurize to 0.5 MPa (5 kgf/cm2G), wait 5 minutes, and make sure the pres-
sure does not decrease.
2Pressurize to 1.5 MPa (15 kgf/cm2G), wait 5 minutes, and make sure the
pressure does not decrease.
3Pressurize to 4.15 MPa (41.5 kgf/cm2G) and measure the surrounding tem-
perature and refrigerant pressure.
(3)
If the specied pressure holds for about one day and does not decrease, the
pipes have passed the test and there are no leaks.
• If the surrounding temperature changes by 1 °C, the pressure will change by
about 0.01 MPa (0.1 kgf/cm2G). Make the necessary corrections.
(4)
If the pressure decreases in steps (2) or (3), there is a gas leak. Look for the
source of the gas leak.
4.5.Stopvalveopeningmethod
The stop valve opening method varies according to the outdoor unit model. Use the
appropriate method to open the stop valves.
(1)
Gas side of RP100 - 200 (Fig. 4-6)
1Remove the cap, pull the handle toward you and rotate 1/4 turn in a counter-
clockwise direction to open.
2Make sure that the stop valve is open completely, push in the handle and rotate
the cap back to its original position.
(2)
Liquid side of RP100 - 200 and Gas/Liquid side of RP71 (Fig. 4-7)
1Remove the cap and turn the valve rod counterclockwise as far as it will go with
the use of a 4 mm hexagonal wrench. Stop turning when it hits the stopper.
(ø9.52: Approximately 10 revolutions)
2Make sure that the stop valve is open completely, push in the handle and rotate
the cap back to its original position.
Refrigerant pipes are protectively wrapped for RP71 - 200
• The pipes can be protectively wrapped up to a diameter of ø90 before or after
connecting the pipes. Cut out the knockout in the pipe cover following the groove
and wrap the pipes.
Pipe inlet gap for RP71 - 200
• Use putty or sealant to seal the pipe inlet around the pipes so that no gaps re-
main. (If the gaps are not closed, noise may be emitted or water and dust will
enter the unit and breakdown may result.)
4.6.Additionofrefrigerant
• Additional charging is not necessary if the pipe length does not exceed 30 m.
• If the pipe length exceeds 30 m, charge the unit with additional R410A refriger-
ant according to the permitted pipe lengths in the chart below.
* When the unit is stopped, charge the unit with the additional refrigerant
through the liquid stop valve after the pipe extensions and indoor unit have
been vacuumized.
When the unit is operating, add refrigerant to the gas check valve using a
safety charger. Do not add liquid refrigerant directly to the check valve.
* After charging the unit with refrigerant, note the added refrigerant amount on
the service label (attached to the unit).
Refer to the “1.5. Using R410A refrigerant air conditioners” for more informa-
tion.
• Be careful when installing multiple units. Connecting to an incorrect indoor unit
can lead to abnormally high pressure and have a serious effect on operation
performance.
Model
Permitted
pipe
length
Permitted
vertical
difference
Additional refrigerant charging amount
31 - 40 m 41 - 50 m 51 - 60 m 61 - 70 m - 75 m
RP71
- 50 m
- 30 m
0.6 kg 1.2 kg — — —
RP100 - 140
- 75 m 0.6 kg 1.2 kg 1.8 kg 2.4 kg
RP170 - 200
- 75 m 0.9 kg 1.8 kg 2.4 kg 3.6 kg 4.5 kg
IDouble spanner section
(Do not apply a spanner other than to this section.
Doing so would cause coolant leaks.)
JSeal section
(Seal the end of the heat insulation material at
the pipe connection section with whatever seal
material you have on hand so that water does not
inltrate the heat insulation material.)
AValve
BUnit side
CHandle
D Cap
ELocal pipe side
FPipe cover
GService port
HWrench hole
I
H
B
Precautionswhenusingthechargevalve(Fig.4-8)
Do not tighten the service port too much when installing it, otherwise, the valve core
could be deformed and become loose, causing a gas leak.
After positioning section Bin the desired direction, turn section Aonly and tighten it.
Do not further tighten sections Aand Btogether after tightening section A.
* The gure to the left is an example only.
The stop valve shape, service port position,
etc., may vary according to the model.
* Turn section Aonly.
(Do not further tighten sections Aand B
together.)
CCharge hose
DService port
A
B
C
D
Fig.4-8
(1) (2)
8
4.Installingtherefrigerantpiping
Maximum pipe length (RP170·RP200)
Note : Be sure to use hard (tempered) one for pipe over :22.2.
75m
[30m]
<Marks in the table above>
The maximum pipe length
Charge-less pipe length
: It can be used.
: Cooling capacity is lowered.
: Additional refrigerant charge is required when
the pipe length exceeds 20m.
Liquid
pipe
(mm)
Gas
pipe
(mm)
O.D.
Thick-
ness
O.D.
Thick-
ness
RP170
RP200
:9.52
t0.8
:12.7
t0.8
:15.88
t1.0
:22.2
t1.0
50m
[30m]
:25.4
t1.0
Standard size
75m
[30m]
:28.58
t1.0
75m
[30m]
:22.2
t1.0
50m
[20m]
:25.4
t1.0
50m
[20m]
:22.2
t1.0
40m
[20m]
:25.4
t1.0
40m
[20m]
:28.58
t1.0
40m
[20m]
:28.58
t1.0
50m
[20m]
:31.75
t1.1
40m
[20m]
RP170,200
Additional refrigerant amount when the liquid pipe of the larger diameter is used.
1:1 system
Liquid pipe When the pipe length exceeds 20 m
[15.88 Additional refrigerant amount w (g) =180 × Pipe length (m) - 3000
* w (g) 0 : Additional charge is not necessary.
Simultaneous twin/triple system
When the pipe length (main piping and branch piping) exceeds 20 m
Additional refrigerant amount w (g) =(180
×
L1)+(120
×
L2) +(90
×
L3)+(30
×
L4) - 3000
L1 : [15.88 liquid pipe length (m) L2 : [12.7 liquid pipe length (m)
L3 : [9.52 liquid pipe length (m) L4 : [6.35 liquid pipe length (m)
* w (g) 0 : Additional charge is not necessary.
9
Perform the airtight test, vacuum air purging,
additional refrigerant charging (if necessary),
and gas leak check.
4.7.PrecautionswhenreusingexistingR22refrigerantpipes
• Refer to the owchart below to determine if the existing pipes can be used and if it is necessary to use a lter dryer.
• If the diameter of the existing pipes is different from the specied diameter, refer to technological data materials to conrm if the pipes can be used.
Measure the existing pipe thickness and
check for damage.
Theexistingpipethicknessmeetsspecica-
tions and the pipes are not damaged.
Check if the existing air conditioner can operate.
After operating the cooling system for about 30
minutes, do a pump down work.
Disconnect the existing air conditioner from the
pipes.
Attach the new air conditioner
Test run
* Refer to 7.2.
The existing pipes cannot be reused.
Use new pipes.
* If the existing air conditioner cannot operate, use
a refrigerant recovery device to collect the refrigerant.
* In case existing pipes were used for gas or oil
heat pump systems, be sure to clean the pipes.
Theexistingpipethicknessdoesnotmeet
specicationsorthepipesaredamaged.
Fig. 4-9
4.8. For twin/triple combination (Fig. 4-9)
• When this unit is used as a FREE COMPO MULTI unit, install the refrigerant
piping with the restrictions indicated in the drawing on the left. In addition, if the
restrictions are going to be exceeded, or if there are going to be combinations of
indoor and outdoor units, refer to installation instructions for the indoor unit for
details about the installation.
Outdoor unit
Permissible total
piping length
A+B+C+D
A+B or
A+C or
A+D
Charge-less
piping length
A+B+C+D
RP170
RP200
* “D” is for triple“.
Indoor unit
Outdoor unit
Multi distribution pipe (option)
Height difference (Indoor unit-
Outdoor unit) Max. 30 m
Height difference (Indoor unit-
Indoor unit) Max. 1 m
A: Main piping
B, C, D : Branch piping
<Limits of refrigerant piping installation>
|B-C |or |B-D |or
|C-D |No. of bends
RP71 - 200 Within 15
RP100-200 : A+B+C(+D) 75 m
RP71 : A+B+C 50 m
RP71
RP100 - 140
50 m and less —
—
75 m and less
75 m and less 75 m and less
30 m and less
30 m and less
30 m and less
Outdoor unit
8 m and less
4.Installingtherefrigerantpiping
RP71 RP100 - 200
Drain socket PAC-SG61DS-E
Drain pan PAC-SG64DP-E PAC-SH97DP-E
5. Drainage piping work
Outdoor unit drainage pipe connection
When drain piping is necessary, use the drain socket or the drain pan (option).
S3
S3
S2
S1
S2S1L N
10
6.Electricalwork
Fig. 6-3
* In case of PEA-170, 200
PUHZ-170, 200 PEA-170, 200
Power supply
Earth leakage breaker
Circuit breaker or local switch
LCD remote controller
Outdoor unit
Indoor unit
Power cable wiring
Indoor/outdoor connection wiring
Grounding
* In case of PEA-170, 200
Main remote controller
Subordinate remote controller
Standard (Refrigerant address = 00)
Refrigerant address = 01
!Refrigerant address = 02
"Refrigerant address = 15
! "
6.1.Outdoorunit(Fig.6-1,Fig.6-2)
1Remove the service panel.
2Wire the cables referring to the Fig. 6-1 and the Fig. 6-2.
* Except PEA-RP170, 200WHA
C
Fig.6-1
AIndoor unit
BOutdoor unit
CRemote controller
DMain switch (Breaker)
EEarth
Fig.6-2
A
B
D
D
AAAB
CE
EE
E
For Power For Power
L N
S1 S2 S3
RP71-170V
L1 L2 L3 N
S1 S2 S3
RP100-200Y
F Terminal block
G Indoor/Outdoor connection terminal block (S1, S2, S3)
H Service panel
I Clamp
* Clamp the cables so that they do not contact the center of the service panel or the gas valve.
J Earth terminal
Note :
Iftheprotectivesheetfortheelectricalboxisremovedduringservicing,besureto
reinstall it.
Caution:
Be sure to install N-Line. Without N-Line, it could cause damage to the unit.
S1
S2
S3
S1
S2
S3
11
6.2.Fieldelectricalwiring
Outdoor unit model RP71V RP100,125V RP140, 170V RP100, 125, 140Y RP170, 200Y
Outdoor unit power supply ~/N (single), 50 Hz, 230 V ~/N (single), 50 Hz, 230 V ~/N (single), 50 Hz, 230 V 3N~ (3 ph 4-wires),
50 Hz, 400 V
3N~ (3 ph 4-wires),
50 Hz, 400 V
Outdoor unit input capacity Main switch (Breaker) *1 25 A 32 A 40 A 16 A 32 A
Wiring
Wire No. ×
size (mm2)
Outdoor unit power supply 3 × Min. 2.5 3 × Min. 4 3 × Min. 6 5 × Min. 1.5 5 × Min. 4
Indoor unit-Outdoor unit *2 3 × 1.5 (Polar) 3 × 1.5 (Polar) 3 × 1.5 (Polar) 3 × 1.5 (Polar)
Cable length 50m:3×4(Polar)/Cable
length 80m:3×6(Polar)
Indoor unit-Outdoor unit earth *2 1 × Min. 1.5 1 × Min. 1.5 1 × Min. 1.5 1 × Min. 1.5 1 × Min. 2.5
Remote controller-Indoor unit *3 2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar)
Circuit rating
Outdoor unit L-N (single)
Outdoor unit L1-N, L2-N, L3-N (3 phase) *4 AC 230 V AC 230 V AC 230 V AC 230 V AC 230 V
Indoor unit-Outdoor unit S1-S2 *4 AC 230 V AC 230 V AC 230 V AC 230 V AC 230 V
Indoor unit-Outdoor unit S2-S3 *4 DC 24 V DC 24 V DC 24 V DC 24 V DC 24 V
Remote controller-Indoor unit *4 DC 12 V DC 12 V DC 12 V DC 12 V DC 12 V
*1. A breaker with at least 3.0 mm contact separation in each poles shall be provided. Use earth leakage breaker (NV).
*2. (RP71-140)
Max. 45 m
If 2.5 mm2used, Max. 50 m
If 2.5 mm2used and S3 separated, Max. 80 m
(RP170, 200)
Max. 80 m Total Max. including all indoor/indoor connection is 80 m.
• Use one cable for S1 and S2 and another for S3 as shown in the picture.
• Max. 50 m Total Max. for PEA. Wiring size 3 × 1.5 (Polar).
*3. The 10 m wire is attached in the remote controller accessory.
*4. The gures are NOT always against the ground.
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.
Notes: 1. Wiringsizemustcomplywiththeapplicablelocalandnationalcode.
2.
PowersupplycordsandIndoor/Outdoorunitconnectingcordsshallnotbelighterthanpolychloroprenesheathedexiblecord.(Design60245IEC57
)
3. Useanearthwirewhichislongerthantheothercordssothatitwillnotbecomedisconnectedwhentensionisapplied.
A-Control
Outdoor Unit
3 poles isolator
Power supply
Isolator
A-Control
Indoor Unit
Warning:
·IncaseofA-controlwiring,thereishighvoltagepotentialontheS3terminalcausedbyelectricalcircuitdesignthathasnoelectricalinsulationbetween
power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when
thepowerisenergized.Ifisolatorshouldbeusedbetweenindoorunitandoutdoorunit,pleaseuse3-poletype.
6.Electricalwork
INDOOR-OUTDOOR CONNECTING CABLE (RP170,200)
Cross section of cable Wire size (mm2) Number of wires Polarity L (m)*6
Round 2.5 3 Clockwise : S1-S2-S3
*Pay attention to stripe of yellow and green
(30)
*2
Flat 2.5 3 Not applicable
(Because center wire has no cover finish)
Not applicable
*5
Flat 1.5 4 From left to right : S1-Open-S2-S3 (18)
*3
Round 2.5 4 Clockwise : S1-S2-S3-Open
*Connect S1 nad S3 to the opposite angle
(30)
*4
*1 :Power supply cords of appliances shall not be lighter than design 60245 IEC or
227 IEC.
*2 :In case that cable with stripe of yellow and green is available.
*3 :In case of regular polarity connection (S1-S2-S3), wire size is 1.5 mm2.
*4 :In case of regular polarity connection (S1-S2-S3).
*5 :In the flat cables are connected as this picture, they can be used up to 30 m.
*6 :Mentioned cable length is just a reference value.
It may be different depending on the condition of installation, humidity or
materials, etc.
(3C Flat cable × 2)
Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).
Intermediate connections can lead to communication error if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the inter-
mediate connection point.
S1 S3
S2
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a re or communication failure.
12
7.Testrun
7.1.Beforetestrun
►Aftercompletinginstallation andthewiring andpipingoftheindoor and
outdoor units, check for refrigerant leakage, looseness in the power sup-
ply or control wiring, wrong polarity, and no disconnection of one phase in
the supply.
►Usea500-voltmegohmmeterto checkthatthe resistancebetweenthe
powersupplyterminalsandgroundisatleast1.0M".
►Donotcarryoutthistestonthecontrolwiring(lowvoltagecircuit)termi-
nals.
Warning:
Donotusetheairconditioneriftheinsulationresistanceislessthan1.0M".
Insulation resistance
After installation or after the power source to the unit has been cut for an extended
period, the insulation resistance will drop below 1 M"due to refrigerant accumulat-
ing in the compressor. This is not a malfunction. Perform the following procedures.
1. Remove the wires from the compressor and measure the insulation resistance of
the compressor.
2. If the insulation resistance is below 1 M", the compressor is faulty or the resis-
tance dropped due the accumulation of refrigerant in the compressor.
3. After connecting the wires to the compressor, the compressor will start to warm
up after power is supplied. After supplying power for the times indicated below,
measure the insulation resistance again.
• The insulation resistance drops due to accumulation of refrigerant in the com-
pressor. The resistance will rise above 1 M"after the compressor is warmed
up for 4 hours.
(The time necessary to warm up the compressor varies according to atmo-
spheric conditions and refrigerant accumulation.)
• To operate the compressor with refrigerant accumulated in the compressor,
the compressor must be warmed up at least 12 hours to prevent breakdown.
4. If the insulation resistance rises above 1 M", the compressor is not faulty.
Caution:
• The compressor will not operate unless the power supply phase connec-
tion is correct.
• Turnonthepoweratleast12hoursbeforestartingoperation.
- Starting operation immediately after turning on the main power switch can result
in severe damage to internal parts. Keep the power switch turned on during the
operational season.
►Thefollowingsmustbecheckedaswell.
• The outdoor unit is not faulty. LED1 and LED2 on the control board of the out-
door unit ash when the outdoor unit is faulty.
• Both the gas and liquid stop valves are completely open.
• A protective sheet covers the surface of the DIP switch panel on the control
board of the outdoor unit. Remove the protective sheet to operate the DIP
switches easily.
7.2.Testrun
7.2.1.UsingSW4inoutdoorunit
SW4-1 ON Cooling operation
SW4-2 OFF
SW4-1 ON Heating operation
SW4-2 ON
* After performing the test run, set SW4-1 to OFF.
• After power is supplied, a small clicking noise may be heard from the inside of
the outdoor unit. The electronic expansion valve is opening and closing. The unit
is not faulty.
• A few seconds after the compressor starts, a clanging noise may be heard from
the inside of the outdoor unit. The noise is coming from the check valve due to
the small difference in pressure in the pipes. The unit is not faulty.
ThetestrunoperationmodecannotbechangedbyDIPswitchSW4-2during
thetestrun.(Tochangethetestrunoperationmodeduringthetestrun,stop
thetestrunbyDIPswitchSW4-1.Afterchangingthetestrunoperationmode,
resumethetestrunbyswitchSW4-1.)
7.2.2.Usingremotecontroller
Refer to the indoor unit installation manual.
13
Caution:
Makesuretoperformthe“7.Testrun”andconrmtheunitworkswithout
anyproblems,beforestartingthefollowingsettings.
►Howtoselectthe“RefrigerantLeakageDetection”mode
Detection is possible regardless the unit’s operation (ON or OFF).
1Press button for more than 3 seconds to switch to the maintenance
mode.
[Display ] MAINTENANCE
►Howtostarttheinitiallearning
2Press button and select the [GAS LEAK TEST START] (Fig. 8-2)
* The initial learning for the leakage detection is always done once after the new
installation or the data reset.
TEST
CLOCK
8.Initialsettingsforrefrigerantleakagedetectionfunction
[Display ]
Remote control button positions
D
A C B
Operation mode Compressor information Outdoor unit information Indoor unit information
Confirm
Activate/cancel maintenance mode
GAS LEAK
JUDGE
GAS LEAK
TEST START
Refrigerant leakage
detection judgment
Refrigerant
leakage detection
(initial teaching)
A
Fig.8-1
Fig.8-2
[Display ] Waiting for stabilization
Stabilized
After 45 minutes
D
Fig.8-3
Press
FILTER
( ) button to confirm. (Fig. 8-3)
How to finish the initial learning
Once the unit’s operation is stabilized, the initial learning is completed.
Press
TEST
button for more than three seconds to cancel the initial learning.
The initial learning can also be cancelled by pressing
ON/OFF
button.
* Refer to the Technical Manual for the refrigerant leakage detection judgment method.
This air conditioner (outdoor unit) can detect refrigerant leakage which may happen
during a long period of use. In order to enable the leakage detection, the following
settings are required to let the unit memorize the initial conditions (initial learning).
* Except RP170, 200.
9.1.Lownoisemode(on-sitemodication)(Fig.9-1)
By performing the following modication, operation noise of the outdoor unit can be
reduced by about 3-4 dB.
The low noise mode will be activated when a commercially available timer or the
contact input of an ON/OFF switch is added to the CNDM connector (option) on the
control board of the outdoor unit.
• The ability varies according to the outdoor temperature and conditions, etc.
1Complete the circuit as shown when using the external input adapter
(PAC-SC36NA). (Option)
2SW7-1 (Outdoor unit control board): OFF
3SW1 ON: Low noise mode
SW1 OFF: Normal operation
ACircuit diagram example (low noise mode)
BOn-site arrangement
CExternal input adapter (PAC-SC36NA)
X: Relay
DOutdoor unit control board
EMax. 10 m
FPower supply for relay
A
Fig. 9-1
ACircuit diagram example (Demand function)
BOn-site arrangement
X, Y: Relay
CExternal input adapter (PAC-SC36NA)
DOutdoor unit control board
EMax. 10 m
FPower supply for relay
• RP170,200
By setting SW7-1 on the control board of the outdoor unit, the energy consump-
tion (compared to the normal consumption) can be limited as shown below.
SW7-1 SW2 SW3 Energy consumption
Demand
function ON
OFF OFF 100%
ON OFF 75%
ON ON 50%
OFF ON 0% (Stop)
A
Fig. 9-2
9. Special Functions
SW1
Orange
1
3
Brown
Red
CNDM
X
X
SW2 SW3
Orange
1
3
Brown
Red
CNDM
Y
X
X Y
C D
C D
9.2.Demandfunction(on-sitemodication)(Fig.9-2)
By performing the following modication, energy consumption can be reduced to 0
–100% of the normal consumption.
The demand function will be activated when a commercially available timer or the
contact input of an ON/OFF switch is added to the CNDM connector (option) on the
control board of the outdoor unit.
1Complete the circuit as shown when using the external input adapter
(PAC-SC36NA). (Option)
2 RP71-140
By setting SW7-1 and SW7-2 on the control board of the outdoor unit, the ener-
gy consumption (compared to the normal consumption) can be limited as shown
below.
SW7-1 SW7-2 Energy consumption (SW2 ON)
OFF OFF 0% (Stop)
ON OFF 50%
OFF ON 75%
SW2
Orange
1
3
Brown
Red
CNDM
Y
Y
A C D
RP71–140
RP170,200
14
* Set the refrigerant address using the DIP switch of the outdoor unit.
1Wiring from the Remote Control
This wire is connected to TB5 (terminal board for remote controller) of the indoor
unit (non-polar).
2When a Different Refrigerant System Grouping is Used.
Up to 16 refrigerant systems can be controlled as one group using the slim MA re-
mote controller.
Note:
Insinglerefrigerantsystem(twin/triple),thereisnoneedofwiring2.
AOutdoor unit
BIndoor unit
CMaster remote controller
DSubordinate remote controller
EStandard 1:1 (Refrigerant address = 00)
FSimultaneous twin (Refrigerant address = 01)
GSimultaneous triple (Refrigerant address = 02)
ESW1 3 - 6
FSW1 3 - 6
GSW1 3 - 6
10.Systemcontrol(Fig.10-1)
Fig.10-1
SW1
Function table
<SW1>
Function Operation according to switch setting
ON OFF
SW1
function
settings
1 Compulsory
defrosting Start Normal
2 Error history
clear Clear Normal
3
4
5
6
Refrigerant
system ad-
dress setting
Settings for outdoor unit addresses
0 to 15
TB1
A GFAA E
B B B B B B
DC
TB1 TB1
TB4
TB5
TB4
TB5
TB4 TB4
TB5
TB4 TB4
1
1
2
ON
OFF
ON
OFF
ON
OFF
3456
3456
3456
ON
OFF
2
9.3.Refrigerantcollecting(pumpdown)
Perform the following procedures to collect the refrigerant when moving the indoor
unit or the outdoor unit.
1Supply power (circuit breaker).
* When power is supplied, make sure that “CENTRALLY CONTROLLED” is not
displayed on the remote controller. If “CENTRALLY CONTROLLED” is dis-
played, the refrigerant collecting (pump down) cannot be completed normally.
2After the gas stop valve is closed, set the SWP switch on the control board of the
outdoor unit to ON. The compressor (outdoor unit) and ventilators (indoor and
outdoor units) start operating and refrigerant collecting operation begins. LED1
and LED2 on the control board of the outdoor unit are lit.
* Only set the SWP switch (push-button type) to ON if the unit is stopped. How-
ever, even if the unit is stopped and the SWP switch is set to ON less than 3
minutes after the compressor stops, the refrigerant collecting operation can-
not be performed. Wait until compressor has been stopped for 3 minutes and
then set the SWP switch to ON again.
3Because the unit automatically stops in about 2 to 3 minutes after the refrigerant
collecting operation (LED1 and LED2 are lit), be sure to quickly close the gas
stop valve. When LED1 and LED2 are lit and the outdoor unit is stopped, open
the liquid stop valve completely, and then repeat step 2after 3 minutes have
passed.
* If the refrigerant collecting operation has been completed normally (LED1 and
LED2 are lit), the unit will remain stopped until the power supply is turned off.
4Turn off the power supply (circuit breaker).
* Note that when the length of the extension piping is long, it may not be pos-
sible to perform a pump-down operation. When performing the pump-down
operation, make sure that the low pressure is lowered to near 0 MPa (gauge).
9. Special Functions
Warning:
Whenpumpingdowntherefrigerant,stopthecompressorbeforedisconnect-
ingtherefrigerantpipes.Thecompressormayburstifairetc.getintoit.
Unit : mm
Fig. 2-7
Fig. 2-11 Fig. 2-12
Fig. 2-13 Fig. 2-14 Fig. 2-15
Fig. 2-16 Fig. 2-17 Fig. 2-18
Fig. 2-10
Fig. 2-9Fig. 2-8Fig. 2-6
150
(100)
300
(200)
1000
Max. 500
200
(100) 200
(100)
300
1000
(500)
150
(100)
1000
(500)
250
(150)
1500
(1000)
500 (300)
Max. 500
300
(200)
1500
(1000)
500
(300)
1500
(1000)
Max. 300
1500
(1000)
1500
(1000)
500
(300)
1000
(500)
600
(400)
2000
(1000)
150
(100)
1500
(1000)
600
(400)
3000
(2000)
500
(300)
1500
(1000)
800
(500)
150
250
(150)
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
RG79U640L02 Printed in Japan
This product is designed and intended for use in the residential,
commercial and light-industrial environment.
This manual suits for next models
3
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