Mitsubishi Electric CITY MULTI PUHY-HP-TJMU-A User manual
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
GBF
INSTALLATION MANUAL
For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner unit.
MANUEL D’INSTALLATION
Veuillez lire le manuel d’installation en entier avant d’installer ce climatiseur pour éviter tout accident et vous assurer d'une utilisation correcte.
Air-Conditioners For Building Application
Hyper Heating Inverter Y-Series
OUTDOOR UNIT
PUHY-HP-TJMU-A(-BS) For use with R410A
2
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1.1. Before installation and electric work
uBefore installing the unit, make sure you read all the
“Safety precautions”.
uThe “Safety precautions” provide very important points
regarding safety. Make sure you follow them.
Symbols used in the text
Warning:
Describes precautions that should be observed to prevent danger of injury
or death to the user.
Caution:
Describes precautions that should be observed to prevent damage to the
unit.
Symbols used in the illustrations
: Indicates an action that must be avoided.
: Indicates that important instructions must be followed.
: Indicates a part which must be grounded.
: Beware of electric shock. (This symbol is displayed on the main unit
label.) <Color: yellow>
Warning:
Carefully read the labels attached to the outdoor unit.
HIGH VOLTAGE WARNING:
Control box houses high-voltage parts.•
When opening or closing the front panel of the control box, do not let it•
come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power,•
keeptheunitoffforatleast10minutes,andconrmthatthevoltage
between FT-P and FT-N on INV Board has dropped to DC20V or less.
(It takes about 10 minutes to discharge electricity after the power
supply is turned off.)
Warning:
Do not use refrigerant other than the type indicated in the manuals•
provided with the unit and on the nameplate.
- Doingsomaycausetheunitorpipestoburst,orresultinexplosionorre
during use, during repair, or at the time of disposal of the unit.
- It may also be in violation of applicable laws.
- MITSUBISHI ELECTRIC CORPORATION cannot be held responsible
for malfunctions or accidents resulting from the use of the wrong type of
refrigerant.
Ask the dealer or an authorized technician to install the air conditioner.•
- Improper installation by the user may result in water leakage, electric
shock,orre.
Install the unit at a place that can withstand its weight.•
- Failure to do so may cause the unit to fall down, resulting in injuries and
damage to the unit.
Usethespeciedcablesforwiring.Maketheconnectionssecurelyso•
that the outside force of the cable is not applied to the terminals.
- Inadequateconnectionandfasteningmaygenerateheatandcauseare.
Prepare for strong winds and earthquakes and install the unit at the•
speciedplace.
- Improper installation may cause the unit to topple and result in injury and
damage to the unit.
AlwaysuseltersandotheraccessoriesspeciedbyMitsubishi•
Electric.
- Ask an authorized technician to install the accessories. Improper
installationbytheusermayresultinwaterleakage,electricshock,orre.
Neverattempttorepairtheunitwithouttheproperqualications.If•
the air conditioner must be repaired consult the dealer, contractor or
qualiedRefrigerationEngineer.
- Iftheunitisrepairedimproperly,waterleakage,electricshock,orremay
result.
Donottouchtheheatexchangerns.•
- Improper handling may result in injury.
If refrigerant gas leaks during installation work, ventilate the room.•
- Iftherefrigerantgascomesintocontactwithaame,poisonousgaseswill
be released.
Install the air conditioner according to this Installation Manual.•
- Iftheunitisinstalledimproperly,waterleakage,electricshock,orremay
result.
Have all electric work done by a licensed electrician according to the•
“Electric Facility Engineering Standard”, the “Wire Regulations in
each area” and the instructions given in this manual and always use a
dedicated power supply.
- If the power source capacity is inadequate or electric work is performed
improperly,electricshockandremayresult.
Securely install the outdoor unit terminal cover (panel).•
- If the terminal cover (panel) is not installed properly, dust or water may
entertheoutdoorunitandreorelectricshockmayresult.
When installing and moving the air conditioner to another site, do not•
chargeitwitharefrigerantdifferentfromtherefrigerantspeciedon
the unit.
- If a different refrigerant or air is mixed with the original refrigerant, the
refrigerant cycle may malfunction and the unit may be damaged.
If the air conditioner is installed in a small room, measures must be•
taken to prevent the refrigerant concentration from exceeding the
safety limit if the refrigerant should leak.
- Consult the dealer regarding the appropriate measures to prevent the
safety limit from being exceeded. Should the refrigerant leak and cause
the safety limit to be exceeded, hazards due to lack of oxygen in the room
could result.
When moving and reinstalling the air conditioner, consult the dealer or•
an authorized technician.
- If the air conditioner is installed improperly, water leakage, electric shock,
orremayresult.
After completing installation work, make sure that refrigerant gas is not•
leaking.
- If the refrigerant gas leaks and is exposed to a fan heater, stove, oven, or
other heat source, it may generate noxious gases.
Do not reconstruct or change the settings of the protection devices.•
- If the pressure switch, thermal switch, or other protection device is shorted
oroperatedforcibly,orpartsotherthanthosespeciedbyMitsubishi
Electricareused,reorexplosionmayresult.
To dispose of this product, consult your dealer.•
The installer and system specialist shall secure safety against leakage•
according to local regulation or standards.
- Choose the appropriate wire size and the switch capacities for the main
power supply described in this manual if local regulations are not available.
Pay special attention to the place of installation, such as a basement,•
etc. where refrigeration gas can accumulate, since refrigerant is
heavier than the air.
For outdoor units that allow outside air intake to the indoor unit, the•
installation site must be carefully chosen to ensure only clean air can
enter the room.
- Direct exposure to outdoor air may have harmful effects on people or food.
1. Safety precautions
Contents
1. Safety precautions ....................................................................................... 2
1.1. Before installation and electric work............................................ 2
1.2. Precautions for devices that use R410A refrigerant.................... 3
1.3. Before installation........................................................................ 3
1.4. Before installation (relocation) - electrical work........................... 3
1.5. Before starting the test run.......................................................... 3
2. About the product......................................................................................... 3
3. Combination of outdoor units....................................................................... 4
4. Specications............................................................................................... 4
5. Parts included list......................................................................................... 4
6. Space required for unit installation and operation........................................ 4
7. Transporting the unit .................................................................................... 5
8. Installation of unit......................................................................................... 6
8.1. Installation................................................................................... 6
9. Refrigerant piping installation....................................................................... 6
9.1. Caution........................................................................................ 6
9.2. Refrigerant piping system .......................................................... 8
10. Additional refrigerant charge.......................................................................11
10.1. Calculation of additional refrigerant charge................................11
10.2. Precautions concerning piping connection and valve
operation ....................................................................................11
10.3. Airtight test, evacuation, and refrigerant charging..................... 13
10.4. Thermal insulation of refrigerant piping..................................... 14
11. Wiring (For details, refer to the installation manual of each
indoor/outdoor unit and controller.) ............................................................ 15
11.1. Caution...................................................................................... 15
11.2. Control box and connecting position of wiring........................... 15
11.3. Wiring transmission cables ....................................................... 15
11.4. Wiring of main power supply and equipment capacity.............. 18
12. Test run/Typical unit operation ................................................................... 19
13. Rating plate information............................................................................. 19
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1.4. Before installation (relocation) -
electrical work
Caution:
Ground the unit.•
- Do not connect the ground wire to gas or water pipes, lightning rods, or
telephone ground lines. Improper grounding may result in electric shock.
Install the power cable so that tension is not applied to the cable.•
- Tensionmaycausethecabletobreakandgenerateheatandcauseare.
Install a leak circuit breaker, as required.•
- If a leak circuit breaker is not installed, electric shock may result.
Usepowerlinecablesofsufcientcurrentcarryingcapacityandrating.•
- Cablesthataretoosmallmayleak,generateheat,andcauseare.
Useonlyacircuitbreakerandfuseofthespeciedcapacity.•
- A fuse or circuit breaker of a larger capacity, or the use of a substitute
simplesteelorcopperwiremayresultinageneralunitfailureorre.
Do not wash the air conditioner units.•
- Washing them may cause an electric shock.
Be careful that the installation base is not damaged by long use.•
- If the damage is left uncorrected, the unit may fall and cause personal
injury or property damage.
Install the drain piping according to this Installation Manual to ensure•
proper drainage. Wrap thermal insulation around the pipes to prevent
condensation.
- Improper drain piping may cause water leakage causing damage to
furniture and other possessions.
Be very careful about transporting the product.•
- One person should not carry the product. Its weight is in excess of 20 kg
[45LBS].
- Some products use PP bands for packaging. Do not use any PP bands as
a means of transportation. It is dangerous.
- Donottouchtheheatexchangerns.Doingsomaycutyourngers.
- Whentransportingtheoutdoorunit,supportitatthespeciedpositionson
the unit base. Also support the outdoor unit at four points so that it cannot
slip sideways.
Safely dispose of the packing materials.•
- Packing materials, such as nails and other metal or wooden parts, may
cause stabs or other injuries.
- Tear apart and throw away plastic packaging bags so that children will not
play with them. If children play with a plastic bag which has not been torn
apart, they face the risk of suffocation.
1.5. Before starting the test run
Caution:
Turn on the power at least 12 hours before starting operation.•
- Starting operation immediately after turning on the main power switch
can result in irreversible damage to internal parts. Keep the power switch
turned on during the operational season. Make sure of the phase order of
power supply and voltage between each phase.
Donottouchtheswitcheswithwetngers.•
- Touchingaswitchwithwetngerscanresultinanelectricshock.
Do not touch the refrigerant pipes during and immediately after•
operation.
- During and immediately after operation, the refrigerant pipes may be hot
orcold,dependingontheconditionoftherefrigerantowingthroughthe
refrigerant piping, compressor, and other refrigerant cycle parts. Your
hands may suffer burns or frostbite if you touch the refrigerant pipes.
Do not operate the air conditioner with the panels and guards removed.•
- Rotating, hot, or high-voltage parts can cause injuries.
Do not turn off the power immediately after stopping operation.•
- Always wait at least 5 minutes before turning off the power. Otherwise,
drainage water leakage or mechanical failure of sensitive parts may occur.
Do not touch the surface of the compressor during servicing.•
- If the unit is connected to a supply and not running, the crank case heater
located at the base of the compressor may still be operating.
1.2. Precautions for devices that use
R410A refrigerant
Caution:
Do not use existing refrigerant piping.•
- The old refrigerant and refrigerant oil in the existing piping contains a large
amount of chlorine which may cause the refrigerant oil of the new unit to
deteriorate.
- R410A is a high-pressure refrigerant and can cause the existing piping to
burst.
Use refrigerant piping made of phosphorus deoxidized copper and•
copper alloy seamless pipes and tubes. In addition, be sure that the
inner and outer surfaces of the pipes are clean and free of hazardous
sulphur, oxides, dust/dirt, shaving particles, oils, moisture, or any other
contaminant.
- Contaminants on the inside of the refrigerant piping may cause the
refrigerant oil to deteriorate.
Store the piping to be used during installation indoors and keep both•
ends of the piping sealed until just before brazing. (Store elbows and
other joints in a plastic bag.)
- If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and
compressor failure may result.
Apply only a small amount of ester oil, ether oil, or alkyl benzene to•
areconnections(forindoorunit).
- Inltrationofalargeamountofmineraloilmaycausetherefrigerantoilto
deteriorate.
Useliquidrefrigeranttollthesystem.•
- Ifgasrefrigerantisusedtollthesystem,thecompositionofthe
refrigerant in the cylinder will change and performance may drop.
Do not use a refrigerant other than R410A•
- If another refrigerant (R22, etc.) is mixed with R410A, the chlorine in the
refrigerant may cause the refrigerant oil to deteriorate.
Useavacuumpumpwithareverseowcheckvalve.•
- Thevacuumpumpoilmayowbackintotherefrigerantcycleandcause
the refrigerant oil to deteriorate.
Do not use the following tools that are used with conventional•
refrigerants.
(Gaugemanifold,chargehose,gasleakdetector,reverseowcheck
valve, refrigerant charge base, refrigerant recovery equipment)
- If the conventional refrigerant and refrigerant oil are mixed in the R410A,
the refrigerant may deteriorate.
- If water is mixed in the R410A, the refrigerant oil may deteriorate.
- Since R410A does not contain any chlorine, gas leak detectors for
conventional refrigerants will not react to it.
Do not use a charging cylinder.•
- Using a charging cylinder may cause the refrigerant to deteriorate.
Be especially careful when managing the tools.•
- If dust, dirt, or water gets into the refrigerant cycle, the refrigerant may
deteriorate.
1.3. Before installation
Caution:
Do not install the unit where combustible gas may leak.•
- If the gas leaks and accumulates around the unit, an explosion may result.
Do not use the air conditioner where food, pets, plants, precision•
instruments, or artwork are kept.
- The quality of the food, etc. may deteriorate.
Do not use the air conditioner in special environments.•
- Oil,steam,sulfuricsmoke,etc.cansignicantlyreducetheperformanceof
the air conditioner or damage its parts.
When installing the unit in a hospital, communication station, or similar•
place,providesufcientprotectionagainstnoise.
- Inverter equipment, private power generator, high-frequency medical
equipment, or radio communication equipment may cause the air
conditioner to operate erroneously, or fail to operate. On the other hand,
the air conditioner may affect such equipment by creating noise that
disturbs medical treatment or image broadcasting.
Do not install the unit on or over things that are subject to water•
damage.
- When the room humidity exceeds 80% or when the drain pipe is clogged,
condensation may drip from the indoor unit. Perform collective drainage
work together with the outdoor unit, as required.
2. About the product
This unit uses R410A-type refrigerant•
Piping for systems using R410A may be different from that for systems using•
conventional refrigerant because the design pressure in systems using
R410A is higher. Refer to the Data Book for more information.
Some of the tools and equipment used for installation with systems that use•
other types of refrigerant cannot be used with the systems using R410A.
Refer to the Data Book for more information.
Do not use the existing piping, as it contains chlorine, which is found in•
conventional refrigerating machine oil and refrigerant. This chlorine will
deteriorate the refrigerant machine oil in the new equipment. The existing piping
must not be used as the design pressure in systems using R410A is higher than
that in the systems using other types of refrigerant and the existing pipes may
burst.
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6. Space required for unit installation and operation
1In case of single installation
Secureenoughspacearoundtheunitasshowninthegurebelow.•
[Fig. 6.0.1]
(1) If the distance is 300 mm [11-13/16 in] or more between the rear side
and the wall
<A> Top view
(Unit: mm [in])
15*15*
450*
300*
[11-13/16]
[17-23/32]
[19/32][19/32]
A
(2) If the distance is 100 mm [3-15/16 in] or more between the rear side and
the wall
<A> Top view
(Unit: mm [in])
100*
450*
50*50*
[3-15/16]
[17-23/32]
[1-31/32][1-31/32]
A
(3) If the wall height (H) of the front, rear or side exceeds the wall height
restriction
<B> Side view
(Unit: mm [in])
500
H
h
h
H
[19-11/16]
A
B
When the height of the walls on the front, back or on the sides <H> exceeds•
thewallheightlimitasdenedhere,addtheheightthatexceedstheheight
limit<h>totheguresthataremarkedwithanasterisk(*).
<Wall height limit> Front: Up to the unit height
Back: Up to 500mm [19-11/16 in] from the unit bottom
Side: Up to the unit height
(4) If there are obstacles at the upper part of the unit
<C> When there is little space up to an obstruction
(Unit: mm [in])
240
[9-15/32]
[1-31/32]
[39-3/8]
45°
50
1000
A
D
C
AFront BUnit height
CBack DAiroutletguide(eld-supplied)
3. Combination of outdoor units
Component units of PUHY-HP144 to HP192 are listed below.
Outdoor unit model Component unit models
PUHY-HP72TJMU-A(-BS) - -
PUHY-HP96TJMU-A(-BS) - -
PUHY-HP144TSJMU-A(-BS) PUHY-HP72TJMU-A(-BS) PUHY-HP72TJMU-A(-BS)
PUHY-HP192TSJMU-A(-BS) PUHY-HP96TJMU-A(-BS) PUHY-HP96TJMU-A(-BS)
*PUHY-HP144/192TSJMU-A(-BS)require“TwinningKit”toconnectcomponentunitmodulesintheeld.
4. Specications
Model PUHY-HP72TJMU-A PUHY-HP96TJMU-A PUHY-HP144TSJMU-A PUHY-HP192TSJMU-A
Sound level (60Hz) 56dB <A> 57dB <A> 59dB <A> 60dB <A>
External static pressure 0 Pa *2
Indoor units
Total capacity 50 ~ 130 % *1
Model 06 ~ 96
Quantity 1 ~ 13 1 ~ 16 1 ~ 22 1 ~ 24
Operation
temperature
Standard type Cooling mode: – 5°CDB ~ 43°CDB [23°FDB ~ 109°FDB] (0°CDB ~ 43°CDB [32°FDB ~ 109°FDB] with outdoor unit at lower position)
Heating mode: – 25°CWB ~ 15.5°CWB [–13°FWB ~ 60°FWB]
Outside air
intake type
Cooling mode: 21°CDB/15.5°CWB ~ 43°CDB/35°CWB (70°FDB/60°FWB ~ 109°FDB/95°FWB)
Heating mode: – 10°CDB ~ 20°CDB [14°FDB ~ 68°FDB]
*1:Thetotalindoorcapacityofunitsrunsimultaneouslyis130%orless.
*2:Toenablehighstaticpressure,settheDipSWonthemainpanelasfollows.
SW3-9: ON, SW3-10 60Pa compatible: OFF, 30Pa compatible: ON
5. Parts included list
Adapter
<Check joint>
Model P72 2 pcs.
P96 2 pcs.
I I
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2In case of collective installation and continuous installation
[Fig. 6.0.2]
(Unit: mm [in])
A
C
BB
C
30
450* 300*
[11-13/16][17-23/32]
[1-3/16]
A
C
BB
C
100
450* 100*
[3-15/16][17-23/32]
[3-15/16]
AAA
B
B
CC
100*
450* 450 450
[17-23/32] [17-23/32] [17-23/32] [3-15/16]
AAA
C
15*
450 450
[17-23/32] [17-23/32]
[19/32]
[Fig. 7.0.1]
Use suspension ropes that will withstand the weight of the unit.•
When moving the unit, use a• 4-point suspension, and avoid giving impacts
to the unit (Do not use 2-point suspension).
Place protective pads on the unit where it comes in contact with the ropes to•
protect the unit from being scratched.
Settheangleofropingat40˚orless.•
Use 2 ropes that are each longer than 8 m [26ft].•
Place protective padding at the corners of the product to protect the product•
from scratches or dents that might be caused by the rope.
7. Transporting the unit
Caution:
Be very careful when carrying/moving the product.
- Wheninstallingtheoutdoorunit,suspendtheunitatthespeciedlocationof
the unit base. Stabilize as necessary so that it does not move to the side and
support it at 4 points. If the unit is installed or suspended with 3-point support,
the unit may become unstable and fall.
2P961P72 (Unit: m [ft])
A
C
C
BB
900 300*300*
[35-7/16]
[11-13/16][11-13/16]
A
B
B
C
1000*
900 300*
[11-13/16]
[35-7/16]
[39-3/8]
AFront BMust be open
CWall height (H)
When multiple units are installed adjacent to each other, secure enough•
space to allow for air circulation and walkway between groups of units as
showninthegures.
At least two sides must be left open.•
As with the single installation, add the height that exceeds the height limit•
<h>totheguresthataremarkedwithanasterisk(*).
If there is a wall at both the front and the rear of the unit, install up to six•
units consecutively in the side direction and provide a space of 1000 mm or
more as inlet space/passage space for each six units.
Lt::,
[ll][ll][ll]
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8.1. Installation
[Fig. 8.1.1]
(Unit: mm [in])
30
[1-3/16]
A
B
C
AField-supplied M10 anchor bolt BCorner is not seated.
CFixingbracketforthehole-inanchorbolt(3locationstoxwithscrews)
[Fig. 8.1.2]
Outlet
Inlet
InletInlet
H
In abnormally harsh environments such as clod and/or windy areas,•
sufcientcountermeasurestoguardagainstexcessivewindandsnow
should be taken to ensure the unit's correct operation. When the unit is
expected to operate in cooling mode in conditions under 10°C [50°F], in
snowy areas, in environments subject to strong winds or rain, install air inlet
and outlet ducting as shown in [Fig. 8.1.2].
Fix unit tightly with bolts so that unit will not fall down due to earthquakes or•
strong winds.
Use concrete base or an angle bracket as the foundation of unit.•
Vibration may be transmitted to the installation section and noise and•
vibrationmaybegeneratedfromtheoorandwalls,dependingonthe
installationconditions.Therefore,provideamplevibrationproong(cushion
pads, cushion frame, etc.).
Build the foundation in such way that the corner of the installation leg is•
securelysupportedasshownintheleftgure.(Fig.8.1.1)
When using a rubber isolating cushion, please ensure it is large enough to
covertheentirewidthofeachoftheunit'slegs.Ifthecornersarenotrmly
seated, the installation feet may be bent.
When using cushion pads, be sure that the full width of the unit is covered.•
The projecting length of the anchor bolt should be less than 30 mm [1-3/16 in].•
Post-installedanchorbolts(i.e.,boltsnotrmlycementedintothebase)are•
notcompatiblewiththisproductunlessxingbracketsarerstmountedon
the four locations.
8. Installation of unit
9. Refrigerant piping installation
The pipe is connected via a terminal-branch type connection in which refrigerant
piping from the outdoor unit is branched at the terminal and is connected to each
of the indoor units.
Themethodofpipeconnectionisasfollows:areconnectionfortheindoor
units, gas pipes and liquid pipes for outdoor units, brazed connection. Note that
the branched sections are brazed
.
Warning:
Do not use refrigerant other than the type indicated in the manuals
provided with the unit and on the nameplate.
- Doingsomaycausetheunitorpipestoburst,orresultinexplosionorre
during use, during repair, or at the time of disposal of the unit.
- It may also be in violation of applicable laws.
- MITSUBISHI ELECTRIC CORPORATION cannot be held responsible
for malfunctions or accidents resulting from the use of the wrong type of
refrigerant.
Always use extreme care to prevent the refrigerant gas from leaking while
usingreorame.Iftherefrigerantgascomesintocontactwithaame
from any source, such as a gas stove, it breaks down and generates
a poisonous gas which can cause gas poisoning. Never weld in an
unventilated room. Always conduct an inspection for gas leakage after
installation of the refrigerant piping has been completed.
9.1. Caution
This unit uses refrigerant R410A. Follow the local regulations on materials and
pipe thickness when selecting pipes. (Refer to the table on page 7.)
1Use the following materials for refrigeration piping.
Material: Use copper alloy seamless pipes made of phosphorus•
deoxidized copper. Ensure the inner and outer surfaces of the pipes are
clean and free from hazardous sulfur, oxide, dusts, shaving particles,
oils, and moisture (contamination).
Size: Refer to item 9.2. for detailed information on refrigerant piping•
system.
2Always observe the restrictions on the refrigerant piping (such as rated
length, height difference, and piping diameter) to prevent equipment failure
or a decline in heating/cooling performance.
Note:
1. Height of frame base for snow damage prevention (H) shall be twice as high
as expected snowfall. Width of frame base shall not exceed that of the unit.
The frame base shall be made of angle steel, etc., and designed so that
snow and wind slip through the structure. (If frame base is too wide, snow
will be accumulated on it.)
2. Install unit so that wind will not directly lash against openings of inlet and
outlet ducts.
3. Buildframebaseatcustomerreferringtothisgure.
Material : Galvanized steel plate 1.2T
Painting : Overall painting with polyester powder
Color : Munsell 5Y8/1 (same as that of unit)
4. When the unit is used in a cold region and the heating operation is
continuously performed for a long time when the outside air temperature
is below freezing, install a heater to the unit base or take other appropriate
measures to prevent water from freezing on the base.
Warning:
Be sure to install unit in a place strong enough to withstand its weight.•
Any lack of strength may cause unit to fall down, resulting in a personal
injury.
Have installation work in order to protect against strong winds and•
earthquakes.
Anyinstallationdeciencymaycauseunittofalldown,resultingina
personal injury.
Whenbuildingthefoundation,givefullattentiontotheoorstrength,drainwater
disposal<duringoperation,drainwaterowsoutoftheunit>,andpipingand
wiring routes.
Precautions when routing the pipes and wires below the unit
When routing the pipes and wires below the unit, be sure that the foundation and
base work do not block the base through-holes. Also make sure the foundation is at
least 100 mm [3-15/16 in] high so that the piping can pass under the unit.
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<Table 1>
Indoor twinning pipe set model Outdoor Twinning Kit model
Line branch Header branch
Downstream indoor unit capacity
Less than 72 in total
Downstream indoor unit capacity
More than 73 and less than
144 in total
Downstream indoor unit capacity
More than 145 and less than
288 in total
4 branches 8 branches 10 branches Total outdoor model
P144 ~ P192
CMY-Y102SS-G2 CMY-Y102LS-G2 CMY-Y202S-G2
CMY-Y104C-G CMY-Y108C-G
CMY-Y1010C-G
CMY-Y100CBK2
Copper pipe size and radial thickness for R410A CITY MULTI.
Size (mm) Size (inch) Radial thickness
(mm)
Radial thickness
(mil) Pipe type
ø6.35 ø1/4" 0.8 32 Type-O
ø9.52 ø3/8" 0.8 32 Type-O
ø12.7 ø1/2" 0.8 32 Type-O
ø15.88 ø5/8" 1.0 40 Type-O
*ø19.05 ø3/4" 1.2 48 Type-O
*ø19.05 ø3/4" 1.0 40 Type-1/2H or H
ø22.2 ø7/8" 1.0 40 Type-1/2H or H
ø25.4 ø1" 1.0 40 Type-1/2H or H
ø28.58 ø1-1/8" 1.0 40 Type-1/2H or H
ø31.75 ø1-1/4" 1.1 44 Type-1/2H or H
ø34.93 ø1-3/8" 1.2 48 Type-1/2H or H
ø41.28 ø1-5/8" 1.4 56 Type-1/2H or H
* Bothpipetypescanbeusedforpipesizeø19.05(3/4inch)forR410Aair
conditioner.
3Branching cannot be made after header branching (corresponding parts are
marked with in the diagram below).
To the outdoor unit
CAP
To the outdoor unit
4Do not install outdoor unit piping when it is raining.
5Commercially available piping often contains dust and other materials.
Always blow it clean with a dry inert gas.
6Use care to prevent dust, water or other contaminants from entering the
piping during installation.
7Reduce the number of bending portions as much as possible, and make
bending radius as big as possible.
8For indoor and outdoor branching, be sure to use the following twinning pipe
sets in the table 1 (sold separately).
9 Useanadapterifaspeciedrefrigerantpipehasadifferentdiameterfrom
that of a branching pipe.
0Braze only with non-oxide brazing material for piping. Failure to do so
may damage the compressor. Be sure to perform the non-oxidation
brazing with a nitrogen purge.
Do not use any commercially available anti-oxidizing agent since it may
cause pipe corrosion and degrading of the refrigerant oil.
Please contact Mitsubishi Electric for more details.
(Refer to item 10.2. for details of the piping connection and valve operation)
a Alwaysinsulatethepipingproperly.Insufcientinsulationwillresultina
decline in heating/cooling performance, water drops from condensation
forming and other such problems. (Refer to item 10.4 for thermal insulation
of refrigerant piping.)
bWhen connecting the refrigerant piping, make sure the valve of the outdoor
unit is completely closed (the factory setting). Do not operate it until the
refrigerant piping for the outdoor and indoor units has been connected, a
refrigerant leakage test has been performed, and the evacuation process
has been completed.
cNever use refrigerant to perform an air purge. Always evacuate using a
vacuum pump.
dBe sure to charge the system using liquid refrigerant.
eEither a lack or an excess of refrigerant causes the unit to make an
emergency stop. Charge the system with an appropriate amount of
refrigerant. When servicing, always check the notes concerning pipe
length and amount of additional refrigerant at both locations, the refrigerant
volume calculation table on the back of the service panel and the additional
refrigerant section on the labels for the combined number of indoor units.
(Refer to item 9.2. for detailed information on refrigerant piping system.)
Warning:
When installing and moving the unit, do not charge the system with any
otherrefrigerantotherthantherefrigerantspeciedontheunit.
- Mixing of a different refrigerant, air, etc. may cause the refrigerant cycle to
malfunction and may result in severe damage.
Caution:
Useavacuumpumpwithareverseowcheckvalve.•
- Ifthevacuumpumpdoesnothaveareverseowcheckvalve,thevacuum
pumpoilmayowbackintotherefrigerantcycleandcausedeteriorationof
the refrigerant oil.
Do not use the tools shown below used with conventional refrigerant.•
(Gauge manifold, charge hose, gas leak detector, check valve,
refrigerant charge base, vacuum gauge, refrigerant recovery
equipment)
- Mixing of conventional refrigerant and refrigerator oil may cause the
refrigerant oil to deteriorate.
- Mixing of water will cause the refrigerant oil to deteriorate.
- R410A refrigerant does not contain any chlorine. Therefore, gas leak
detectors for conventional refrigerants will not react to it.
Manage the tools used for R410A more carefully than normal.•
- If dust, dirt, or water gets in the refrigerant cycle, the refrigerant oil will
deteriorate.
Never use existing refrigerant piping.•
- The large amount of chlorine in conventional refrigerant and refrigerant oil
in the existing piping will cause the new refrigerant to deteriorate.
Store the piping to be used during installation indoors and keep both•
ends of the piping sealed until just before brazing.
- If dust, dirt, or water gets into the refrigerant cycle, the oil will deteriorate
and the compressor may fail.
Do not use a charging cylinder.•
- Using a charging cylinder may cause the refrigerant to deteriorate.
Do not use special detergents for washing piping.•
X
~=====~II
I I
-
8
GB
9.2. Refrigerant piping system
Connection Example
[Fig. 9.2.1]
[Outdoor model : P72 ~ P96]
A
B C D e
a b c d
A
C
B
CCC
C
A
abc d e
CC
CCC
D
B
F
A
[Outdoor model : P144 ~ P192]
A2A1
AB C D e
a b c d
unit 2unit 1
AA
B
C
E
CCC
C
A2A1
A
unit 2unit 1
abc d e
AA
EB
F
D
CC
CCC
AOutdoor unit B1st branch
CIndoor unit DCap
EOutdoor Twinning Kit FHeader
* ThetotallengthofA1andA2islessthan10m[32ft].
A (Unit: mm [in])
Outdoor model Unit combination A A1 A2
unit 1 unit 2 Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe
P72 - - ø12.7 [1/2] ø19.05 [3/4] - - - -
P96 - - ø12.7 [1/2] ø22.2 [7/8] - - - -
P144 P72 P72 ø15.88 [5/8] ø28.58 [1-1/8] ø12.7 [1/2] ø19.05 [3/4] ø12.7 [1/2] ø19.05 [3/4]
P192 P96 P96 ø15.88 [5/8] ø28.58 [1-1/8] ø12.7 [1/2] ø22.2 [7/8] ø12.7 [1/2] ø22.2 [7/8]
B,C,D (Unit: mm [in])
Total capacity of indoor units Liquid pipe Gas pipe Downstream unit model total Joint
~ 54 ø9.52 [3/8] ø15.88 [5/8] ~ 72 CMY-Y102SS-G2
55 ~ 72 ø9.52 [3/8] ø19.05 [3/4] 73 ~ 144 CMY-Y102LS-G2
73 ~ 108 ø9.52 [3/8] ø22.2 [7/8] 145 ~ 234 CMY-Y202S-G2
109 ~ 144 ø12.7 [1/2] ø28.58 [1-1/8] The 1st branch of P144 ~ P234
145 ~ 234 ø15.88 [5/8] ø28.58 [1-1/8]
a,b,c,d,e (Unit: mm [in])
Model number Liquid pipe Gas pipe
06, 08, 12, 15, 18 ø6.35 [1/4] ø12.7 [1/2]
24, 27, 30, 36, 48, 54 ø9.52 [3/8] ø15.88 [5/8]
72 ø9.52 [3/8] ø19.05 [3/4]
96 ø9.52 [3/8] ø22.2 [7/8]
Outdoor model Outdoor Twinning Kit
P144 ~ P192 CMY-Y100CBK2
4-Branch header
(Downstream
indoor unit model
total 72)
8-Branch header
(Downstream
indoor unit model
total 144)
10-Branch header
(Downstream
indoor unit model
total 234)
CMY-Y104C-G CMY-Y108C-G CMY-Y1010C-G
~
y y
-<y-1
□□
oo
□
□ o
□□
l I l
~~I~~
~
/Y
y y
~
1
~,
J'
□
□ □ □
□□
ooo
l~c===~I
===-~I_
-
9
GB
Precautions for outdoor unit combinations
Refer to [Fig. 9.2.2] for the positioning of twinning pipes.
[Fig. 9.2.2]
<A> Install the piping so that oil will not accumulate in the stopped outdoor unit.
1.
A
C
F
F
Unit 1 Unit 2 Unit 3
C
FFB
Unit 1 Unit 2 Unit 3
The NG example shows that oil accumulates because the units are installed on a reverse gradient while unit 1 is in operation, and unit 3 is stopped.
2.
Unit 1 Unit 2 Unit 3
Unit 1 Unit 2 Unit 3
h1
h1 = 0.2 m (7-7/8 in) max
Unit 1 Unit 2 Unit 3
h1
h1 > 0.2 m (7-7/8 in)
The NG example shows that oil accumulates into units 1 and 2 while unit 3 is in operation, and units 1 and 2 are stopped. Vertical pipe height (h) should be 0.2 m (7-7/8 in) or below.
3.
Unit 1
Unit 2 Unit 3
h1
h1 = 0.2 m (7-7/8 in) max
h2 h2 = 0.1 m (3-15/16 in) max
Unit 1
Unit 2 Unit 3
h1
h1 > 0.2 m (7-7/8 in)
h2
h2 > 0.1 m (3-15/16 in)
The NG example shows that oil accumulates into unit 1 while unit 3 is in operation, and unit 1 is stopped. Vertical pipe height (h) should be 0.2 m (7-7/8 in) or below.
4.
Unit 1 Unit 2
Unit 3
h1
h2 = 0.1 m (3-15/16 in) max
h1 = 0.2 m (7-7/8 in) max
h2
Unit 1 Unit 2
Unit 3
h2 > 0.1 m (3-15/16 in)
h1 > 0.2 m (7-7/8 in)
h1h2
The NG example shows that oil accumulates into unit 3 while unit 1 is in operation, and unit 3 is stopped. Vertical pipe height (h) should be 0.2 m (7-7/8 in) or below.
<B> When the piping on the outdoor unit side (from the twinning pipe) exceeds 2 m [6 ft], ensure a trap (gas pipe only) within 2 m [6 ft].
Make sure the height of the trap is 200 mm [7-7/8 in] or more.
If there is no trap, oil can accumulate inside the pipe, causing a shortage of oil and may damage the compressor.
2 m (6 ft)
F
C
F
D
EC
Caution:
Donotinstalltrapsotherthantheonesbetweenoutdoorunitsdescribedonaseparatesheettopreventoilbackowandcompressorstart-upfailure.•
Donotinstallsolenoidvalvestopreventoilbackowandcompressorstart-upfailure.•
Donotinstallasightglassbecauseitmayshowimproperrefrigerantow.•
If a sight glass is installed, inexperienced technicians that use the glass may overcharge the refrigerant.
~
sss
1fa
fa
fa
-
10
GB
<C> Slope of twinning pipes
Makesuretheslopeofthetwinningpipesareatananglewithin±15˚totheground.
Iftheslopeexceedsthespeciedangle,theunitmaybedamaged.
±15°
F
G
<D> Pipe connection example
H
H
I
J
ADownward slope BUpward slope C1st branch DTrap (gas pipe only) EWithin 2 m [6 ft]
FTwinning pipe GSlopeofthetwinningpipesareatananglewithin±15˚totheground HPipes on site
ITwinning Kit JStraight run of pipe that is 500 mm [19-11/16 in] or more
-
11
GB
10. Additional refrigerant charge
At the time of shipping, the outdoor unit is charged with refrigerant.
This charge does not include the amount needed for extended piping and
additional charging of each refrigerant line will be required on site. In order that
future servicing may be properly provided, always keep a record of the size and
length of each refrigerant line and the amount of additional charge by writing it in
the space provided on the outdoor unit.
10.1. Calculation of additional refrigerant
charge
Calculate the amount of additional charge based on the length of the piping•
extension and the size of the refrigerant line.
Use the table below as a guide for calculating the amount of additional•
charging and then charge the system accordingly.
If the calculation results in a fraction of less than 0.1 kg [4 oz], round up to the•
next 0.1 kg [4 oz]. For example, if the result of the calculation was 12.38 kg
[437 oz], round the result up to 12.4 kg [438 oz].
<Additional Charge>
Additional
refrigerant charge
=
Liquid pipe size
Total length of
ø19.05 mm [3/4 in] +
Liquid pipe size
Total length of
ø15.88 mm [5/8 in] +
Liquid pipe size
Total length of
ø12.7 mm [1/2 in]
(kg) [oz] (m) × 0.29 (kg/m)
(ft) × 3.12 (oz/ft)
(m) × 0.2 (kg/m)
(ft) × 2.16 (oz/ft)
(m) × 0.12 (kg/m)
(ft) × 1.30 (oz/ft)
+
Liquid pipe size
Total length of
ø9.52 mm [3/8 in] +
Liquid pipe size
Total length of
ø6.35 mm [1/4 in] + α
(m) × 0.06 (kg/m)
(ft) × 0.65 (oz/ft)
(m) × 0.024 (kg/m)
(ft) × 0.26 (oz/ft)
<Example>
Indoor
1: 48
A : ø12.7 mm [1/2 in]
40 m [131 ft]
a : ø9.52 mm [3/8 in]
10 m [32 ft]
2: 36
B : ø9.52 mm [3/8 in]
10 m [32 ft]
b : ø9.52 mm [3/8 in]
5 m [16 ft]
3: 15
C : ø9.52 mm [3/8 in]
15 m [49 ft]
c : ø6.35 mm [1/4 in]
10 m [32 ft]
4: 12
D : ø9.52 mm [3/8 in]
10 m [32 ft]
d : ø6.35 mm [1/4 in]
10 m [32 ft]
5: 24
e : ø9.52 mm [3/8 in]
10 m [32 ft]
The total length of each liquid line is as follows:
ø12.7 mm [1/2 in]: A = 40 m [131 ft] = 40 m [131 ft]
ø9.52 mm [3/8 in]: B + C + D + a + b + e
= 10 m [32 ft] + 15 m [49 ft] + 10 m [32 ft] + 10 m [32 ft] +
5 m [16 ft] + 10 m [32 ft] = 60 m [193 ft]
ø6.35 mm [1/4 in]: c + d = 10 m [32 ft] + 10 m [32 ft] = 20 m [64 ft]
Therefore,
<Calculation example>
Additional refrigerant charge
= 40 m [131 ft] ×0.12 kg/m [1.30 oz/ft] + 60 m [193 ft] ×0.06 kg/m [0.65 oz/ft]
+ 20 m [64 ft] ×0.024 kg/m [0.26 oz/ft] + 3.5 kg [124 oz] = 12.4 kg [438 oz]
Value of α
Total capacity of connecting indoor units α
Models ~ 27 2.0 kg [71 oz]
Models 28 ~ 54 2.5 kg [89 oz]
Models 55 ~ 126 3.0 kg [106 oz]
Models 127 ~ 144 3.5 kg [124 oz]
Models 145 ~ 180 4.5 kg [160 oz]
Models 181 ~ 234 5.0 kg [177 oz]
Models 235 ~ 6.,0 kg [212 oz]
10.2. Precautions concerning piping
connection and valve operation
Conduct piping connection and valve operation accurately and carefully.•
• Removing the pinched connecting pipe
When shipped, a pinched connecting pipe is attached to the on-site liquid
and gas valves to prevent gas leakage.
Take the following steps 1through 4to remove the pinched connecting
pipe before connecting refrigerant pipes to the outdoor unit.
1Check that the refrigerant service valve is fully closed (turned clockwise
all the way).
2Connect a charging hose to the service port on the liquid/gas refrigerant
service valve, and extract the gas in the pipe section between the
refrigerant service valve and the pinched connecting pipe.
At the
conditions
below:
3After vacuuming gas from the pinched connecting pipe, sever the
pinched connecting pipe at the location shown in [Fig.10.2.1] and drain
the refrigerant.
4After completing 2and 3heat the brazed section to remove the
pinched connecting pipe.
[Fig. 10.2.1]
•P72 •P96
<B>
<A> A
E
G
D
F
OS
<B>
<A>
DB
C
D
F
A
E
G
<A> Refrigerant service valve (liquid side/brazed type)
<B> Refrigerant service valve (gas side/brazed type)
AShaft
Fully closed at the factory, when connecting the piping, and when
vacuuming. Open fully after these operations are completed.
<When opening>
•Turntheshaftcounterclockwisewithahexagonalwrench.
•Turnaroundtheshaftuntilitstops.
<When closing>
•Turntheshaftclockwisewithahexagonalwrench.
•Turnaroundtheshaftuntilitstops.
BShaft
Fully closed at the factory, when connecting the piping, and when
vacuuming. Open fully after these operations are completed.
<When opening>
•Turntheshaftcounterclockwise.
•Turnaroundtheshaftuntilitstops.
<When closing>
•Turntheshaftclockwise.
•Turnaroundtheshaftuntilitstops.
CStopper pin
Preventstheshaftfromturning90˚ormore.
DService port
Available for gas venting of the pinched connecting pipe, or vacuuming in the
refrigerant pipes on the site.
ECap
Remove the cap before operating the shaft. Be sure to return it to the original
position after completing the operation.
FPinched connecting pipe severing portion
GPinched connecting pipe brazing portion
Warning:
The sections between the refrigerant service valves and the pinched•
connectingpipesarelledwithgasandrefrigerantoil.Extractthegas
and refrigerant oil in the above-mentioned pipe section before heating
the brazed section to remove the refrigerant service valve pinched
connecting pipe.
- Ifthebrazedsectionisheatedwithoutrstextractingthegasand
refrigerant oil, the pipe may burst or the pinched connecting pipe may blow
off and ignite the refrigerant oil, causing serious injury.
Caution:
Pl• ace a wet towel on the refrigerant service valve before heating the
brazed section to keep the temperature of the valve from exceeding
120˚C[248˚F].
Directtheameawayfromthewiringandmetalsheetsinsidetheunit•
to prevent heat damage.
I
QB
BB
~ ~
BB
}
~========~========
&
-
12
GB
Caution:
Do not vent R410A into the atmosphere.•
Refrigerant pipe connection•
This product needs connecting pipes for front piping and bottom post-piping (sold separately). (Refer to [Fig.10.2.2])
Check the liquid/gas piping dimensions before connecting the refrigerant pipe.
Refer to item 9.2 Refrigerant piping system for piping dimensions.
Make sure that the refrigerant pipe is not touching other refrigerants pipes, unit panels, or base plates.
Be sure to use non-oxidative brazing when connecting pipes.
Be careful not to burn the wiring and plate when brazing.
<Refrigerant piping connection examples>
[Fig.10.2.2]
<A> <B>
45
A
B
12
6
45
A
B
AGaspipe(eldsupplyrequired)
BLiquidpipe(eldsupplyrequired)
<A> Front pipe routing <B> Bottom pipe routing
<Front piping and bottom post-pipting> (sold separately) (Unit : mm [in])
No. 123456
Shape
P72 (CMY-HYS100CEB)
1pc. 1pc. 1pc.
P96 (CMY-YS300CEB)
1pc. 1pc. 1pc. 1pc.
Front pipe routing•
Liquid side P72, P96 Use the included connecting pipe 6to connect.
Gas side P72 Use the included elbow 1and connecting pipe 4to connect.
P96 Use the included elbow 2and connecting pipe 5to connect.
Bottom pipe routing•
Liquid side P72, P96 Expand the liquid side on-site piping (ID ø12.7 mm [1/2 in]) and connect to the refrigerant service valve piping.
Gas side P72 Use the included connecting pipe 4to connect.
P96 Use the included connecting pipe 5to connect.
IDø25.4 [1]
ODø25.4 [1]
IDø28.58 [1-1/8]
ODø28.58 [1-1/8]
ODø9.52 [3/8]
IDø12.7 [1/2]
ODø19.05 [3/4]
IDø25.4 [1]
ODø22.2 [7/8]
IDø28.58 [1-1/8]
IDø12.7 [1/2]
ODø12.7 [1/2]
<gas side> <liquid side> <gas side> <gas side><gas side> <liquid side>
Satisfy the minimum insertion depth in the table below when expanding on-site
piping
Pipe diameter
(mm [in])
Minimum insertion depth
(mm [in])
5 [7/32] or more, less than 8 [11/32] 6 [1/4]
8 [11/32] or more, less than 12 [1/2] 7 [9/32]
12 [1/2] or more, less than 16 [21/32] 8 [11/32]
16 [21/32] or more, less than 25 [1] 10 [13/32]
25 [1] or more, less than 35 [1-13/32] 12 [1/2]
35 [1-13/32] or more, less than 45 [1-25/32] 14 [9/16]
After evacuation and refrigerant charging, ensure that the handle is fully•
open. If operating with the valve closed, abnormal pressure will be imparted
to the high- or low-pressure side of the refrigerant circuit, giving damage to
the compressor, four-way valve, etc.
Determine the amount of additional refrigerant charge by using the formula,•
and charge refrigerant additionally through the service port after completing
piping connection work.
After completing work, tighten the service port and cap securely so as not to•
generate any gas leakage. (Refer to the table on the below for appropriate
tightening torque.)
Appropriate tightening torque:
Outer diameter of
copper pipe (mm [in])
Cap
(N·m/kg·cm)
Shaft
(N·m/kg·cm)
Size of hexagonal
wrench (mm)
Service port
(N·m/kg·cm)
ø9.52 [3/8] 15/150 6/60 4
12/120
ø12.7 [1/2] 20/200 9/90 4
ø15.88 [5/8] 25/250 15/150 6
ø19.05 [3/4] 25/250 30/300 6
ø25.4 [1] 25/250 30/300 10
ø28.58 [1-1/8] 25/250 - - 16/160
Caution:
Keep the valve closed until refrigerant charging to the pipes to be•
added on site has been completed. Opening the valve before charging
the refrigerant may cause damage to the unit.
Do not use a leak detection additive.•
[Fig. 10.2.3]
AExampleofclosurematerials(eld-
supplied)
BFill the gap at the site
Make sure to seal-off the space around
areas where the wires and refrigerant
pipes enter the unit to ensure that small
animals, rainwater, or snow cannot
enter the unit through such openings
and cause damage to the unit.
Caution:
Make sure to seal-off the openings for the pipe and wire retrieval.
Small animals, rainwater, or snow entering through the openings may•
cause damage to the device.
A
B
7z_
=1 3 5
_§
~
-
13
GB
10.3. Airtight test, evacuation, and refrigerant charging
1Airtight test
Perform with the valve of the outdoor unit closed, and pressurize the connection piping and the indoor unit from the service port provided on the valve of the outdoor
unit. (Always pressurize from both the liquid pipe and the gas pipe service ports.)
[Fig. 10.3.1]
LO HI
AD
C
E
B
F
G
H
I
J
B
Airtight test procedure Restriction
(1) After pressurizing to the design pressure (4.15 MPa [602 psi]) using nitrogen gas, allow
it to stand for about one day. If the pressure does not drop, airtightness is good.
However, if the pressure drops, since the leaking point is unknown, the following bubble
test may also be performed.
(2) Afterthepressurizationdescribedabove,spraytheareconnectionparts,brazedparts,
andotherpartsthatmayleakwithabubblingagent(Gupoex,etc.)andvisuallycheck
for bubbles.
(3) After the airtight test, wipe off the bubbling agent.
Ifaammablegasorair(oxygen)isusedasthepressurization•
gas,itmaycatchreorexplode.
Caution:
Only use refrigerant R410A.
- The use of other refrigerant such as R22 or R407C, which contains chlorine, will deteriorate the refrigerating machine oil or cause the compressor to malfunction.
2Evacuation
Evacuate with the valve of the outdoor unit closed and evacuate both the connection piping and the indoor unit from the service port provided on the valve of the
outdoor unit using a vacuum pump. (Always evacuate from the service port of both liquid pipe and gas pipe.) After the vacuum reaches 650 Pa [abs] [0.0943 psi/
5 Torr], continue evacuation for at least one hour or more. Then, stop the vacuum pump and leave it for 1 hour. Ensure the degree of vacuum has not increased. (If
the degree of vacuum increase is larger than 130 Pa [0.01886 psi/1.0 Torr], water might have entered. Apply pressure to dry nitrogen gas up to 0.05 MPa
[7.25 psi] and vacuum again. Repeat the evacuation process three or more times until the vacuum pressure is lost by 130 Pa or below.) Finally, seal in with
the liquid refrigerant through the liquid pipe, and adjust the gas piping to obtain an appropriate amount of the refrigerant during operation.
*Neverperformairpurgingusingrefrigerant.
Note:
Always add an appropriate amount of refrigerant. Also always charge the system with liquid refrigerant.•
Use a gauge manifold, charging hose, and other parts for the refrigerant indicated on the unit.•
Use a graviometer. (One that can measure down to 0.1 kg [3 oz].)•
Useavacuumpumpwithareverseowcheckvalve.•
(Recommended vacuum gauge: ROBINAIR 14830A Thermistor Vacuum Gauge or Micron Gauge)
Do not use a manifold gauge to measure vacuum pressure.
Alsouseavacuumgaugethatreaches65Pa[abs][0.00943psi/0.5Torr]orbelowafteroperatingforveminutes.
3Refrigerant Charging
Do not use refrigerant other than the type indicated in the manuals provided with the unit and on the nameplate.
- Doingsomaycausetheunitorpipestoburst,orresultinexplosionorreduringuse,duringrepair,oratthetimeofdisposaloftheunit.
- It may also be in violation of applicable laws.
- MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for malfunctions or accidents resulting from the use of the wrong type of refrigerant.
Since the refrigerant used with the unit is nonazerotropic, it must be charged in the liquid state. Consequently, when charging the unit with refrigerant from a cylinder,
if the cylinder does not have a siphon pipe, charge the liquid refrigerant by turning the cylinder upside-down as shown in Fig.10.3.3. If the cylinder has a siphon pipe
like that shown on the right of Fig.10.3.3, the liquid refrigerant can be charged with the cylinder standing upright. Therefore, give careful attention to the cylinder
specications.Iftheunitshouldbechargedwithgasrefrigerant,replacealltherefrigerantwithnewrefrigerant.Donotusetherefrigerantremaininginthecylinder.
[Fig. 10.3.3]
<If the cylinder does not have a siphon pipe, charge with the refrigerant cylinder upside-down.>
A
ASiphon pipe
[Fig. 10.3.2]
LO HI
B
A
N
D
N
E
F
O
G
HI
M
K
J
L
C
ASystem analyzer BLo knob CHi knob
DValve ELiquid pipe FGas pipe
GService port HThree-way joint IValve
JValve KR410A cylinder LScale
MVacuum pump NTo indoor unit OOutdoor unit
ANitrogen gas BTo indoor unit CSystem analyzer
DLo knob EHi knob FValve
GLiquid pipe HGas pipe IOutdoor unit
JService port
Observe the following restrictions when conducting an air tightness test
to prevent negative effects on the refrigerating machine oil. Also, with
nonazeotropic refrigerant (R410A), gas leakage causes the composition to
change and affects performance. Therefore, perform the airtightness test
cautiously.
----+---,
----+---,
-
14
GB
Whenllingagapwithmortar,coverthepenetrationpartwithsteelplateso
that the insulation material will not be caved in. For this part, use incombustible
materials for both insulation and covering. (Vinyl covering should not be used.)
Insulation materials for the pipes to be added on site must meet the following•
specications:
Pipe size
ø6.35 to 25.4 mm [1/4 to 1 in]
ø28.58 to 41.28 mm [1-1/8 to 1-21/32 in]
Thickness
10 mm min. [13/32 in min.] 15 mm min. [19/32 in min.]
Temperature Resistance 100°C min. [212°F min.]
* Installationofpipesinahigh-temperaturehigh-humidityenvironment,such
asthetopoorofabuilding,mayrequiretheuseofinsulationmaterials
thickerthantheonesspeciedinthechartabove.
* Whencertainspecicationspresentedbytheclientmustbemet,ensurethat
theyalsomeetthespecicationsonthechartabove.
Penetrations
[Fig. 10.4.4]
(Unit: mm [in])
<A> Inner wall (concealed) <B> Outer wall
AB
A
CD
B
<C> Outer wall (exposed) <D> Floor(waterproong)
EB
I
D
F
G
B
<E> Roof pipe shaft <F> Penetratingportiononrelimitand
boundary wall
G
D
B
H
F
10001000
[39-3/8] [39-3/8]
A
IJ
ASleeve BHeat insulating material
CLagging DCaulking material
EBand FWaterproonglayer
GSleeve with edge HLagging material
IMortar or other incombustible caulking
JIncombustible heat insulation material
10.4. Thermal insulation of refrigerant
piping
Be sure to add insulation work to refrigerant piping by covering liquid pipe and
gas pipe separately with enough thickness heat-resistant polyethylene, so that
no gap is observed in the joint between indoor unit and insulating material, and
insulatingmaterialsthemselves.Wheninsulationworkisinsufcient,thereisa
possibility of condensation drip, etc. Pay special attention to insulation work in
the ceiling plenum.
[Fig. 10.4.1]
A
BC
DE
ASteel wire BPiping
COily mastic asphalt or asphalt DHeat insulation material A
EOuter covering B
Heat
insulation
material A
Glassber+Steelwire
Adhesive + Heat - resistant polyethylene foam + Adhesive tape
Outer
covering B
Indoor Vinyl tape
Floor exposed Water-proof hemp cloth + Bronze asphalt
Outdoor Water-proof hemp cloth + Zinc plate + Oily paint
Note:
Whenusingpolyethylenecoverascoveringmaterial,asphaltroong•
shall not be required.
No heat insulation must be provided for electric wires.•
[Fig. 10.4.2]
AB
C
D
E
A
B
D
EE
ALiquid pipe BGas pipe CElectric wire
DFinishing tape EInsulator
[Fig. 10.4.3]
I
~I
-----I
Il
ii
-
15
GB
11.1. Caution
1Follow ordinance of your governmental organization for technical standard
related to electrical equipment, wiring regulations and guidance of each
electric power company.
2Wiring for control (hereinafter referred to as transmission line) shall be
(5 cm or more [2 in or more]) apart from power source wiring so that it is
notinuencedbyelectricnoisefrompowersourcewiring.(Donotinsert
transmission line and power source wire in the same conduit.)
3Be sure to provide designated grounding work to the outdoor unit.
4Give some allowance to wiring for the electrical part box on the indoor and
outdoor units, because these boxes are sometimes removed at the time of
service work.
5Never connect the main power source to terminal block of transmission line.
If connected, electrical parts will burn out.
6Use 2-core shield cable for the transmission line. If transmission lines of
different systems are wired with the same multiplecore cable, the resultant
poor transmitting and receiving will cause erroneous operations.
7 Onlythetransmissionlinespeciedshouldbeconnectedtotheterminal
block for outdoor unit transmission.
Erroneous connection does not allow the system to operate.
8When connecting a System Controller to outdoor units or performing a
group operation of indoor units that are connected to different outdoor
units, a transmission line for centralized control is required. When using a
transmission line for centralized control, connect the transmission line (non-
polar 2 core wire) to all TB7 terminals between all outdoor units.
9Grouping is set by operating the remote controller.
11.2. Control box and connecting position
of wiring
1Outdoor unit
1. Remove the front panel of the control box by removing the 4 screws and
pushing it up a little before pulling it out.
2. Connect the indoor - outdoor transmission line to the terminal block (TB3) for
the indoor - outdoor transmission line.
If multiple outdoor units are connected in the same refrigerant system,
daisy-chain TB3 (M1, M2, ground terminal ) on the outdoor units. Connect
the indoor - outdoor transmission line for the outdoor units to TB3 (M1, M2,
ground terminal ) of only one of the outdoor units.
3.
Connect the transmission lines for centralized control (between the centralized
control system and the outdoor unit of different refrigerant systems) to the
terminal block for centralized control (TB7). If the multiple outdoor units are
connected to the same refrigerant system, daisy-chain TB7 (M1, M2, terminal
S)ontheoutdoorunitsinthesamerefrigerantsystem.(*1)
*1:IfTB7ontheoutdoorunitinthesamerefrigerantsystemisnotdaisy-
chained, connect the transmission line for centralized control to TB7
ontheOC(*2).IftheOCisoutoforder,orifthecentralizedcontrolis
being conducted during the power supply shut-off, daisy-chain TB7 on
the OC and OS. (In the case that the outdoor unit whose power supply
connector CN41 on the control board has been replaced with CN40
is out of order or the power is shut-off, centralized control will not be
conducted even when TB7 is daisy-chained.)
*2
OC and OS of the outdoor units in the same refrigerant system are
automaticallyidentied.TheyareidentiedasOCandOSindescending
order of capacity. (If the capacity is the same, they will be in ascending order
of their address number.)
4. In the case of indoor-outdoor transmission line, connect the shield ground
to the ground terminal . In the case of transmission lines for centralized
control, connect it to the shield terminal (S) on the terminal block for
centralized control (TB7). Furthermore, in the case of the outdoor units
whose power supply connector CN41 is replaced with CN40, short circuit the
shield terminal (S) and the ground terminal in addition to the above.
5. Fix the connected wires securely in place with the cable strap at the bottom
of the terminal block. External force applied to the terminal block may
damageitandmaycauseashortcircuit,groundfault,orare.
[Fig. 11.2.1]
Te rminal block for indoor –
outdoor transmission line
Te rminal block for
centralized control
Power supply terminal block
Control box
L1 L2 L3
(TB3) (TB7)
(TB1)
AB
C
APower source BTransmission line
CGround screw
[Fig. 11.2.2]
1
2
3
45
A
B
C
ACable strap BPower source line
CTransmission line
When using wire size AWG 6, be sure to use knockout hole 4.•
When using wire size AWG 4, AWG 3, AWG 2, or AWG 1, be sure to use•
knockout hole 2.
When using wire size AWG 0, AWG• 0/2, or AWG 0/3, be sure to use knockout
hole 5.
Ifthereareanygapsaroundthewires,pleasebesuretolltheseinwitha•
suitable material.
2Conduit tube installation
Close by hammering the knockout holes for the conduit tube located on the•
base and the bottom part of the front panel.
When installing the conduit tube directly through the knockout holes, remove•
the burr and protect the tube with masking tape.
Use the conduit tube to narrow down the opening if there is a possibility of•
small animal’s entering the unit.
11.3. Wiring transmission cables
1Types of control cables
1. Wiring transmission cables
Types of transmission cables: Shielding wire CVVS, CPEVS or MVVS•
Cable diameter: More than 1.25 mm• 2[AWG 16]
Maximum wiring length: Within 200 m [656 ft]•
Maximum length of transmission lines for centralized control and indoor/•
outdoor transmission lines (Maximum length via outdoor units): 500 m
[1640 ft] MAX
The maximum length of the wiring between power supply unit for
transmission lines (on the transmission lines for centralized control) and
each outdoor unit and system controller is 200 m [656 ft].
2. Remote control cables
M-NET Remote Controller•
Kind of remote control cable Sheathed 2-core cable (unshielded) CVV
Cable diameter 0.3 to 1.25 mm2[AWG 22 to 16] (0.75 to
1.25 mm2[AWG18to16])*
Remarks
When 10 m [32 ft] is exceeded, use cable
withthesamespecicationsas1.Wiring
transmission cables.
MA Remote Controller•
Kind of remote control cable Sheathed 2-core cable (unshielded) CVV
Cable diameter 0.3 to 1.25 mm2[AWG 22 to 16] (0.75 to
1.25 mm2[AWG18to16])*
Remarks Within 200 m [656 ft]
* Connectedwithsimpleremotecontroller.
11.
Wiring (For details, refer to the installation manual of each indoor/outdoor unit and controller.)
-
16
GB
2Wiring examples
Controller name, symbol and allowable number of controllers.•
Name Code Possible unit connections
Outdoor unit Main unit OC –(*2)
Sub unit OS –(*2)
Indoor unit Indoor unit controller IC 1to32unitsper1OC(*1)
Remote controller Remotecontroller(*1) RC 2 units maximum per group
Other Transmission booster unit RP 0to1unitper1OC(*1)
*1 Atransmissionbooster(RP)mayberequireddependingonthenumberofconnectedindoorunitcontrollers.
*2 OCandOSoftheoutdoorunitsinthesamerefrigerantsystemareautomaticallyidentied.TheyareidentiedasOCandOSindescendingorderofcapacity.(Ifthe
capacity is the same, they will be in ascending order of their address number.)
Example of a group operation system with multiple outdoor units (Shielding wires and address setting are
necessary.)
<Examples of transmission cable wiring>
[Fig. 11.3.1] M-NET Remote Controller
M1M2
M1M2
S
TB7
TB3
IC
(51)
M1M2S
TB5
ME
(01)
IC
M1M2S
TB5
(02)
IC
M1M2S
TB5
(04)
IC
M1M2S
TB5
(03)
IC
M1M2S
TB5
(05)
IC
M1M2S
TB5
(07)
IC
M1M2S
TB5
(06)
L2
L1
(101)
ME
(105)
ME
(103)
ME
(155)
OC
M1M2
M1M2
S
TB7
TB3
(52)
OC
ABS
System
controller
L3
L6
L4
L5
1
AB AB AB
AB
CN41
4
2
3
A
D
BC
E
CN41 CN40
<A> Change the jumper connector
fromCN41toCN40*1
<B> SW2-1:ON*2
<C> Keep the jumper connector on
CN41
<B> SW2-1:ON*2
*1: Whenthepowersupplyunitisnotconnectedtothetransmissionlineforcentralizedcontrol,disconnectthemalepowersupplyconnector(CN41)fromONE
outdoor unit in the system and connect it to CN40.
*2: Ifasystemcontrollerisused,setSW2-1onalloftheoutdoorunitstoON.
[Fig. 11.3.2] MA Remote Controller
*1: Whenthepowersupplyunitisnotconnectedtothetransmissionlineforcentralizedcontrol,disconnectthemalepowersupplyconnector(CN41)fromONE
outdoor unit in the system and connect it to CN40.
*2: Ifasystemcontrollerisused,setSW2-1onalloftheoutdoorunitstoON.
AGroup 1
BGroup 3
CGroup 5
DShielded wire
ESub remote controller
( ) Address
M1 M2 M1 M2
S
TB7
TB3 M1 M2 12S
TB5 TB15 12
TB15 12
TB15
12
TB15
12
TB15
12
TB15
12
TB15
MA
M1M2 S
TB5
M1 M2 S
TB5
M1 M2 S
TB5
M1 M2 S
TB5
M1 M2 S
TB5
M1M2 S
TB5
M1 M2
M1 M2 S
TB7
TB3
AB
AB AB
AB
ABS
CN41 CN40
CN41
2
1
1
4
1
A
E
D
BC
IC
(51) (01)
IC
(02)
IC
(04)
IC
(03)
IC
(05)
IC
(07)
IC
(06)
MA
MA
MA
(52)
OC
System
controller
OC
L2
L6
L3L4
L1
2
2
3
<A> Change the jumper connector
fromCN41toCN40*1
<B> SW2-1:ON*2
<C> Keep the jumper connector on
CN41
<B> SW2-1:ON*2
1-------1=
,-----~,-----,------------~
I
,
l,~~'1'
'I
I,
i ! i i!
, 7""7V'<:1'<7'<1'<
)9;~
I
'
I
'
I
'
I
~-----J
[
____________
_
-
17
GB
[Fig. 11.3.3] Combination of outdoor units and transmission booster unit
IC IC RP
Ground
TB2 TB3
M2
TB3
OC
(51) IC IC
L6L5L3L2L1
OS
(52)
M1 M2 S
TB5
M1 M2 S
TB5
ABSABS
M1 M2
TB3
M1 M1 M2 S
TB5
M1 M2 S
TB5
ME
AB
AB
L4
1
L7
ME
1
AGroup 1 BGroup 3 CGroup 5 DShielded wire ESub remote controller
( ) Address
<Wiring Method and Address Settings>
a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well for all OC-OC, OC-OS and IC-IC wiring intervals.
b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission line terminal block (TB3) of each outdoor unit (OC) to terminals M1,
M2 and terminal S on the transmission line block of the indoor unit (IC). For OC and OS, connect TB3 to TB3.
c. Connect terminals 1 (M1) and 2 (M2) on the transmission line terminal block of the indoor unit (IC) that has the most recent address within the same group to the
terminal block on the remote controller (RC).
d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor unit in a different refrigerant system (OC). For OC
and OS in the same refrigerant system, connect TB7 to TB7.
e. When the power supply unit is not installed on the central control transmission line, change the jumper connector on the control board from CN41 to CN40 of only
one outdoor unit in the system.
f. Connect the terminal S on the terminal block for central control (TB7) for the outdoor unit (OC) for the unit into which the jumper connector was inserted into CN40 in
the Step above to the ground terminal in the electrical component box.
g. Set the address setting switch as follows.
* Tosettheoutdoorunitaddressto100,theoutdooraddresssettingswitchmustbesetto50.
Unit Range Setting Method
Indoor unit (Main) 01 to 50 Use the most recent address within the same group of indoor units
Indoor unit (Sub) 01 to 50 Use an address, other than that of the IC (Main) from among the units within the same group of indoor
units. This must be in sequence with the IC (Main)
Outdoor Unit (OC, OS) 51 to 100 Set the addresses of the outdoor units in the same refrigerant system in the order of sequential
number.OCandOSareautomaticallyidentied.(*1)
M-NET R/C (Main) 101 to 150 Set at an IC (Main) address within the same group plus 100
M-NET R/C (Sub) 151 to 200 Set at an IC (Main) address within the same group plus 150
MA R/C – Unnecessary address setting (Necessary main/sub setting)
h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical power has been turned on.
i. Whenthecentralizedremotecontrollerisconnectedtothesystem,setcentralizedcontrolswitches(SW2-1)oncontrolboardsinalloutdoorunits(OC,OS)to“ON”.
*1 OCandOSoftheoutdoorunitsinthesamerefrigerantsystemareautomaticallyidentied.TheyareidentiedasOCandOSindescendingorderofcapacity.(Ifthe
capacityisthesame,theyareidentiedintheascendingorderoftheiraddressnumber.)
<Permissible Lengths>
1M-NET Remote controller
Max length via outdoor units: L• 1+L2+L3+L4and L1+L2+L3+L5and L1+L2+L6500 m [1640 ft] (1.25 mm2[AWG 16] or more)
Max transmission cable length: L• 1and L3+L4and L3+L5and L6and L2+L6200 m [656 ft] (1.25 mm2[AWG 16] or more)
Remote controller cable length:• 1, 2, 3, 410 m [32 ft] (0.3 to 1.25 mm2[AWG 22 to 16])
If the length exceeds 10 m [32 ft], use a 1.25 mm2[AWG 16] shielded wire. The length of this section (L8) should be included in the
calculation of the maximum length and overall length.
2MA Remote controller
Max length via outdoor unit (M-NET cable): L• 1+L2+L3+L4and L1+L2+L6500 m [1640 ft] (1.25 mm2[AWG 16] or more)
Max transmission cable length (M-NET cable): L• 1and L3+L4and L6and L2+L6200 m [656 ft] (1.25 mm2[AWG 16] or more)
Remote controller cable length:• 1+2and 1+2+3+4200 m [656 ft] (0.3 to 1.25 mm2[AWG 22 to 16])
3Transmission booster
Max transmission cable length (M-NET cable):• 1L1+L2+L3+L5+L6200 m [656 ft] (1.25 mm2[AWG 16])
2L1+L2+L3+L5+L7200 m [656 ft] (1.25 mm2[AWG 16])
3L1+L2+L4200 m [656 ft] (1.25 mm2[AWG 16])
4L6+L5+L3+L4, L4+L3+L5+L7200 m [656 ft] (1.25 mm2[AWG 16])
Remote controller cable length:• 1, 210 m [32 ft] (0.3 to 1.25 mm2[AWG 22 to 16])
If the length exceeds 10 m [32 ft], use 1.25 mm2[AWG 16] shielded cable and calculate the length of that portion (L4and L7) as
within the total extended length and the longest remote length.
mm mm
mm~
-
18
GB
11.4. Wiring of main power supply and equipment capacity
Schematic Drawing of Wiring (Example)
[Fig. 11.4.1]
3~208
-
230V
L1, L2, L3
~208
-
230V
L, N
Ground
Ground Ground Ground Ground
A
C
D
EEE E
B
AB
ASwitch (Breakers for wiring and current leakage) BBreakers for current leakage COutdoor unit
DPull box EIndoor unit
Thickness of wire for main power supply, on/off capacities
<Power source: 208/230V>
Model Unit combination
Minimum wire thickness (mm2[AWG]) Switch (A)
Breaker for
wiring (NFB)
(A)
Breaker for
current leakage
MCA
(A)
MOCP
(A)
Main cable Branch Ground Capacity
Outdoor
unit
PUHY-HP72TJMU-A
21.2 [4] / 13.3 [6]
–
21.2 [4] / 13.3 [6]
60 60 60A 100mA
0.1 sec. or less 59/54 101/92
PUHY-HP96TJMU-A
33.6 [2] / 21.2 [4]
–
33.6 [2] / 21.2 [4]
75 75 75A 100mA
0.1 sec. or less 74/68 127/116
PUHY-HP144TSJMU-A
PUHY-HP72TJMU-A
21.2 [4] / 13.3 [6]
–
21.2 [4] / 13.3 [6]
60 60 60A 100mA
0.1 sec. or less 59/54 101/92
PUHY-HP72TJMU-A
21.2 [4] / 13.3 [6]
–
21.2 [4] / 13.3 [6]
60 60 60A 100mA
0.1 sec. or less 59/54 101/92
PUHY-HP192TSJMU-A
PUHY-HP96TJMU-A
33.6 [2] / 21.2 [4]
–
33.6 [2] / 21.2 [4]
75 75 75A 100mA
0.1 sec. or less 74/68 127/116
PUHY-HP96TJMU-A
33.6 [2] / 21.2 [4]
–
33.6 [2] / 21.2 [4]
75 75 75A 100mA
0.1 sec. or less 74/68 127/116
1. Use dedicated power supplies for the outdoor unit and indoor unit. Ensure OC and OS are wired individually.
2. Bear in mind ambient conditions (ambient temperature, direct sunlight, rain water, etc.) when proceeding with the wiring and connections.
3. The wire size is the minimum value for metal conduit wiring. If the voltage drops, use a wire that is one rank thicker in diameter.
Make sure the power-supply voltage does not drop more than 10%.
4. Specicwiringrequirementsshouldadheretothewiringregulationsoftheregion.
5. Powersupplycordsofpartsofappliancesforoutdooruseshallnotbelighterthanpolychloroprenesheathedexiblecord(design245IEC57).For
example, use wiring such as YZW.
6. A switch with at least 3 mm [1/8 in] contact separation in each pole shall be provided by the Air conditioner installation.
Warning:
Besuretousespeciedwiresforconnectionsandensurenoexternalforceisimpartedtoterminalconnections.Ifconnectionsarenotxedrmly,•
heatingorremayresult.
Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.•
Caution:
A breaker for current leakage must be attached to the power supply. If no earth leakage breaker is installed, it may cause an electric shock.•
Donotuseanythingotherthanabreakerwiththecorrectcapacity.Usingabreakeroftoolargecapacitymaycausemalfunctionorre.•
-
w
w
19
GB
13. Rating plate information
Model P72 P96 P144 P192
Unit combination – – P72 P72 P96 P96
Refrigerant (R410A)
9.0 kg [19 LBS 13 oz] 11.8 kg [26 LBS 1 oz] 9.0 kg [19 LBS 13 oz] 9.0 kg [19 LBS 13 oz] 11.8 kg [26 LBS 1 oz] 11.8 kg [26 LBS 1 oz]
Allowable pressure (Ps) HP: 4.15 MPa [601 psi], LP: 2.21 MPa [320 psi]
Net weight 225 kg [497 LBS] 265 kg [585 LBS] 225 kg [497 LBS] 225 kg [497 LBS] 265 kg [585 LBS] 265 kg [585 LBS]
12. Test run/Typical unit operation
The events listed in the table below are normal occurrences and do not represent operation problems.
Events Display on remote controller Cause
Aspecicindoorunitisnotperformingthe
cooling or heating operation.
“Cooling”or“heating”ashes Because another indoor unit is performing the heating or cooling operation, the
cooling or heating operation for the indoor unit in question is not operating.
Autovaneautomaticallyswitchesairow
direction.
Normal display Theautovanemayswitchovertohorizontalairowoperationfromverticalair
owoperationincoolingmodeiftheverticalairowoperationhasbeenrunning
for 1 hour. At defrost in heating mode or immediately after heating start-up/
shutdown,theautovaneautomaticallyswitchestohorizontalairowforashort
time.
Fan speed automatically changes during
heating operation.
Normal display Unit fan operates in ultra-low speed when thermostat is turned off; automatically
changes over to set value via timer or refrigerant temperature when thermostat is
turned off.
Fan stops during heating operation. Defrost display Fan does not operate when unit is in defrost mode.
Fan does not stop even if unit is not
operating.
No display
When in heating mode, fan still runs for 1 minute after unit stops to exhaust any
residual heat.
At initial stat in heating operation, fan cannot
be manually set.
Heat ready Fan automatically runs in ultra-low speed for 5 minutes after system is turned
on, or until refrigerant temperatures rises to 35°C [95°F], and runs in low-speed
operation for 2 minutes thereafter until set temperature is reached.
Indoorunitremotecontrollerdisplays“H0”
or“PLEASEWAIT”forabout5minutesafter
turning on the universal power supply.
“H0” or “PLEASE WAIT”
ashes
System is performing the initial operating sequence. Remote controller will be
operableagainafter“H0”or“PLEASEWAIT”stopsashinganddisappears.
Drain pump continues to operate even after
the unit has been turned off.
No display After turning off the cooling operation, unit continues to operate the drain pump
for 3 minutes, then shuts it off.
Unit also continues to operate drain pump if condensate has been generated.
Indoor unit emits noise when switching from
heating to cooling and vice versa.
Normal display This is a normal sound of the refrigerant circuit operating properly.
Immediately after startup, the indoor unit
emitsthesoundoftherefrigerantow.
Normal display Unstableowoftherefrigerantemitsasound.Thisistemporaryanddoesnot
imply a problem.
Warm air is omitted from an indoor unit that is
not performing the heating operation.
Normal display The LEV is slightly open for preventing any refrigerant, inside of the indoor unit
thatisnotperformingtheheatingoperation,frombeingliqueed.Thisdoesnot
imply a problem.
-
20
F
1.1.
Avant installation et travaux électriques
uAvant d'installer l'unité, ne manquez pas de lire toutes les
"Précautions de sécurité".
u
Les "Précautions de sécurité" fournissent des points très
importants concernant la sécurité. Ne manquez pas de les observer.
Symboles utilisés dans le texte
Avertissement :
Décrit les précautions qui doivent être prises pour éviter les risques de
blessure ou de mort de l'utilisateur.
Attention :
Décrit les précautions qui doivent être prises pour éviter d'endommager l'unité.
Symboles utilisés dans les illustrations
: Indique une action qui doit être évitée.
: Indique que des instructions importantes doivent être observées.
: Indique une pièce qui doit être mise à la terre.
: Attentionauchocélectrique.(Cesymboleestafchésurl'étiquettede
l'unitéprincipale.)<Couleur:jaune>
Avertissement :
Lisez soigneusement les étiquettes apposées sur l'unité extérieure.
AVERTISSEMENT DE HAUTE TENSION :
Le boîtier de commande abrite des pièces à haute tension.•
En ouvrant ou en fermant le panneau avant du boîtier de commande,•
ne le laissez pas venir en contact avec des composants internes.
Avant d'inspecter l'intérieur de la boîte de commande, coupez le courant,•
laissezl'unitéhorscircuitpendantaumoins10minutes,etconrmezque
la tension entre FT-P et FT-N sur le panneau INV a chuté à 20 Vcc ou moins.
(La décharge de l'électricité prend environ 10 minutes après la coupure
du courant.)
Avertissement :
Utilisez uniquement un réfrigérant de type indiqué dans les manuels•
fournis avec l'unité et sur la plaque signalétique.
- Fautedequoi,l'unitéoulatuyauteriepourraitéclater,oucelapourrait
provoqueruneexplosionouunincendiependantl'utilisation,laréparation
oulamiseaurebutdel'unité.
- Cela pourrait également constituer une violation des lois applicables.
- MITSUBISHI ELECTRIC CORPORATION ne peut être tenue responsable
detoutdysfonctionnementouaccidentrésultantdel'utilisationdumauvais
type de réfrigérant.
Demandez au distributeur ou à un technicien autorisé d'installer le•
climatiseur.
- Uneinstallationincorrecteparl'utilisateurpeutavoircommeconséquence
unefuited'eau,unchocélectriqueouunincendie.
Installez l'unité à un endroit qui peut soutenir son poids.•
- Sicen'estpasprisencompte,l'unitépeuttomberetblesserquelqu'unou
être endommagée.
Utiliserlescâblesspéciéspourlecâblage.Faitesdesbranchements•
solides de sorte que la force extérieure du câble ne soit pas appliquée
aux bornes.
- Unbranchementetunexationinadéquatspeuvents'échaufferetcauser
un incendie.
Soyez préparés en cas de vents forts et de tremblements de terre et•
installez l'unité à la place indiquée.
- Uneinstallationincorrectepeutfairerenverserl'unitéetprovoquerdes
blessuresouendommagerl'unité.
Utiliseztoujourslesltresetautresaccessoiresspéciéspar•
Mitsubishi Electric.
- Demandezàuntechnicienautoriséd'installerlesaccessoires.Une
installationincorrecteparl'utilisateurpeutavoircommeconséquenceune
fuited'eau,unchocélectriqueouunincendie.
N'essayez pas de réparer l'unité si vous ne disposez pas des•
compétences appropriées. Si le climatiseur doit être réparé, contactez
votre revendeur, votre sous-traitant ou un ingénieur frigoriste.
- Uneréparationincorrecteparl'utilisateurpeutavoircommeconséquence
unefuited'eau,unchocélectriqueouunincendie.
Ne touchez pas aux ailettes de l'échangeur de chaleur.•
-
Une manutention inappropriée peut avoir comme conséquence des blessures.
En cas de fuite du gaz frigorigène pendant l'installation, aérez la pièce.•
- Silegazfrigorigènevientencontactavecuneamme,desgaztoxiques
se dégagent.
Installez le climatiseur conformément à ce Manuel d'installation.•
- Uneinstallationincorrectepeutavoircommeconséquenceunefuited'eau,
un choc électrique ou un incendie.
Faites effectuer tous les travaux électriques par un électricien licencié•
selon les "Normes techniques des installations électriques", les
"Règlementation sur le câblage dans chaque zone géographique", et
utilisez toujours une alimentation dédiée.
-
Silasourced'énergieestinadéquateoulestravauxélectriquessontexécutés
incorrectement,unrisquedechocélectriqueetd'incendiepeutenrésulter.
Installez sécuritairement le capot des bornes de l'unité extérieure (panneau).•
- Silecapotdesbornes(panneau)n'estpasinstallécorrectement,la
poussièreoul'eaupeutpénétrerdansl'unitéextérieureetunincendieou
un choc électrique peut en résulter.
En installant et en déplaçant le climatiseur vers un autre site, ne le chargez•
pasavecunfrigorigènedifférentdeceluiquiestspéciésurl'unité.
- Siunautrefrigorigèneoudel'airestmélangéaufrigorigèneoriginal,le
cyclefrigoriquepeutmalfonctionneretl'unitépeutêtreendommagée.
Si le climatiseur est installé dans une petite pièce, des mesures doivent•
être prises pour empêcher la concentration en frigorigène de dépasser
la limite de sécurité en cas de fuite du frigorigène.
- Consultezledistributeurausujetdesmesuresappropriéespourempêcher
lalimitedesécuritéd'êtreexcédée.Encasdefuitedufrigorigèneet
de dépassement de la limite de sécurité, les risques dus au manque
d'oxygènedanslapiècepeuventexister.
Pour déménager et réinstaller le climatiseur, consultez le distributeur•
ou un technicien autorisé.
- Une installation incorrecte du climatiseur peut avoir comme conséquence
unefuited'eau,unchocélectriqueouunincendie.
Aprèsavoirterminélestravauxd'installation,vériezquelegaz•
frigorigène ne fuit pas.
- Si le gaz frigorigène fuit et est exposé à un radiateur-ventilateur, cuisinière,
four ou toute autre source de chaleur, des gaz nocifs peuvent se produire.
Nereconstruisezpasounechangezpaslescongurationsdes•
dispositifs de protection.
- Si le pressostat, le rupteur thermique, ou autre dispositif de protection est
court-circuitéouforcé,ousidespiècesautresquecellesspéciéespar
Mitsubishi Electric sont utilisées, un incendie ou une explosion peut en
résulter.
Pour éliminer ce produit, consultez votre distributeur.•
L'installateur et le spécialiste système assureront la sécurité contre les•
fuites conformément aux normes et règlements locaux.
- Choisissez un câble de taille appropriée et respectez les capacités
ducommutateurd'alimentationtelqu'indiquédanscemanuelsila
réglementationlocalen'estpasdisponible.
Faites particulièrement attention au lieu de l'installation, telle qu'un•
sous-sol, etc. où le gaz frigorigène peut s'accumuler étant donné qu'il
est plus lourd que l'air.
Pour les unités extérieures qui permettent l'admission d'air extérieur•
dans l'unité intérieure, le site d'installation doit être soigneusement
choisi pour permettre uniquement à l'air sain de pénétrer dans la pièce.
- L'expositiondirecteàl'airextérieurpeutavoirdeseffetsnocifssurles
personnes ou la nourriture.
1. Précautions de sécurité
Contenu
1. Précautions de sécurité ............................................................................. 20
1.1.
Avant installation et travaux électriques ....................................... 20
1.2. Précautions pour les appareils qui utilisent le frigorigène
R410A ....................................................................................... 21
1.3. Avantl'installation...................................................................... 21
1.4. Avantl'installation(déménagement)-travauxélectriques........ 21
1.5. Avantdecommencerl'essai ..................................................... 21
2. À propos du produit.................................................................................... 21
3. Combinaisond'unitésextérieures.............................................................. 22
4. Spécications............................................................................................. 22
5. Liste des pièces incluses ........................................................................... 22
6. Espacerequispourinstalleretutiliserl'unité............................................. 22
7. Transportdel'unité .................................................................................... 23
8. Installationdel'unité .................................................................................. 24
8.1. Installation ................................................................................. 24
9. Installation de la tuyauterie du frigorigène ................................................. 24
9.1. Mise en garde ........................................................................... 24
9.2. Système de tuyauterie du frigorigène ...................................... 26
10. Charge supplémentaire de frigorigène....................................................... 29
10.1. Calcul de la charge supplémentaire de frigorigène................... 29
10.2. Précautions concernant les connexions de la tuyauterie et le
fonctionnement de la valve ....................................................... 29
10.3.Testd'herméticité,évacuationetchargementdefrigorigène.... 31
10.4. Isolation thermique de la tuyauterie du frigorigène ................... 32
11. Câblage (pour les détails, reportez-vous au manuel d’installation de
chaqueunitéintérieure/extérieureetducontrôleur) .................................. 33
11.1. Mise en garde ........................................................................... 33
11.2. Boîtier de commande et emplacement pour le raccordement
des câbles................................................................................. 33
11.3. Raccordement des câbles de transmission .............................. 33
11.4.Câblagedel'alimentationprincipaleetcapacitédes
équipements.............................................................................. 36
12. Essaidefonctionnement/Fonctionnementtyped'uneunité ...................... 37
13. Informations de la plaque signalétique ...................................................... 37
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