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Service Handbook
AIR CONDITIONER
Service Handbook
Model
PUHY-RP200, RP250, RP300, RP350YJM-A
PUHY-RP400, RP450, RP500, RP550, RP600, RP650YSJM-A
PUHY-RP700, RP750, RP800, RP850, RP900YSJM-A
2010
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WARNING
CAUTION
WARNING
Safety Precautions
Before installing the unit, thoroughly read the following safety precautions.
Observe these safety precautions for your safety.
This symbol is intended to alert the user to the presence of important instructions that must be followed to avoid
the risk of serious injury or death.
This symbol is intended to alert the user to the presence of important instructions that must be followed to avoid
the risk of serious injury or damage to the unit.
After reading this manual, give it to the user to retain for future reference.
Keep this manual for easy reference. When the unit is moved or repaired, give this manual to those who provide these
services.
When the user changes, make sure that the new user receives this manual.
Ask your dealer or a qualified technician to install the
unit.
Improper installation by the user may result in water leakage, electric shock, smoke, and/or fire.
Properly install the unit on a surface that can withstand the weight of the unit.
Unit installed on an unstable surface may fall and cause injury.
Only use specified cables. Securely connect each cable so that the terminals do not carry the weight of the
cable.
Improperly connected or fixed cables may produce heat
and start a fire.
Take appropriate safety measures against strong
winds and earthquakes to prevent the unit from falling.
If the unit is not installed properly, the unit may fall and
cause serious injury to the person or damage to the unit.
Do not make any modifications or alterations to the
unit. Consult your dealer for repair.
Improper repair may result in water leakage, electric shock,
smoke, and/or fire.
In the event of a refrigerant leak, thoroughly ventilate
the room.
If refrigerant gas leaks and comes in contact with an open
flame, poisonous gases will be produced.
When installing the All-Fresh type units, take it into
consideration that the outside air may be discharged
directly into the room when the thermo is turned off.
Direct exposure to outdoor air may have an adverse effect
on health. It may also result in food spoilage.
Properly install the unit according to the instructions
in the installation manual.
Improper installation may result in water leakage, electric
shock, smoke, and/or fire.
Have all electrical work performed by an authorized
electrician according to the local regulations and instructions in this manual, and a dedicated circuit must
be used.
Insufficient capacity of the power supply circuit or improper
installation may result in malfunctions of the unit, electric
shock, smoke, and/or fire.
Do not touch the heat exchanger fins.
The fins are sharp and dangerous.
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WARNING
Securely attach the terminal block cover (panel) to the
unit.
If the terminal block cover (panel) is not installed properly,
dust and/or water may infiltrate and pose a risk of electric
shock, smoke, and/or fire.
After completing the service work, check for a gas
leak.
If leaked refrigerant is exposed to a heat source, such as a
fan heater, stove, or electric grill, poisonous gases may be
produced.
Only use the type of refrigerant that is indicated on the
unit when installing or reinstalling the unit.
Infiltration of any other type of refrigerant or air into the unit
may adversely affect the refrigerant cycle and may cause
the pipes to burst or explode.
When installing the unit in a small room, exercise caution and take measures against leaked refrigerant
reaching the limiting concentration.
Consult your dealer with any questions regarding limiting
concentrations and for precautionary measures before installing the unit. Leaked refrigerant gas exceeding the limiting concentration causes oxygen deficiency.
Consult your dealer or a specialist when moving or reinstalling the unit.
Improper installation may result in water leakage, electric
shock, and/or fire.
Do not try to defeat the safety features of the unit.
Forced operation of the pressure switch or the temperature
switch by defeating the safety features of these devices, or
the use of accessories other than the ones that are recommended by MITSUBISHI may result in smoke, fire, and/or
explosion.
Only use accessories recommended by MITSUBISHI.
Ask a qualified technician to install the unit. Improper installation by the user may result in water leakage, electric
shock, smoke, and/or fire.
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, keep the unit off for at least 10 minutes,
and confirm that the voltage 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.)
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CAUTION
Precautions for handling units for use with R410A
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 and
the end faces of the existing and new 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 or cause the air conditioning unit to malfunction.
Store the new 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.
Use a small amount of ester oil, ether oil, or alkylbenzene to coat flares and flanges.
Infiltration of a large amount of mineral oil may cause the refrigerant oil to deteriorate or cause the air conditioning unit
to malfunction.
Charge liquid refrigerant (as opposed to gaseous refrigerant) into the system.
If gaseous refrigerant is charged into the system, the composition of the refrigerant in the cylinder will change and
may result in performance loss.
Prepare tools for exclusive use with R410A. Do not use
the following tools if they have been used with the conventional refrigerant (gauge manifold, charging hose,
gas leak detector, reverse-flow check valve, refrigerant
charge base, vacuum gauge, and refrigerant recovery
equipment.).
If the refrigerant or the refrigerating machine oil left on
these tools are mixed in with R410A, it may cause the refrigerating machine oil to deteriorate.
Infiltration of water may cause the refrigerating machine
oil to deteriorate.
Gas leak detectors for conventional refrigerants will not
detect an R410A leak because R410A is free of chlorine.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of the refrigerant will change, and the unit may experience power loss.
Exercise special care when handling the tools for use
with R410A.
Infiltration of dust, dirt, or water into the refrigerant system
may cause the refrigerating machine oil to deteriorate.
Only use refrigerant R410A.
The use of other types of refrigerant that contain chlorine
may cause the refrigerating machine oil to deteriorate.
Use a vacuum pump with a reverse-flow check valve.
If a vacuum pump that is not equipped with a reverse-flow
check valve is used, the vacuum pump oil may flow into the
refrigerant cycle and cause the refrigerating machine oil to
deteriorate.
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Before installing the unit
WARNING
Do not install the unit where a gas leak may occur.
If gaseous refrigerant leaks and piles up around the unit, it
may be ignited.
Do not use the unit to keep food items, animals, plants,
artifacts, or for other special purposes.
The unit is not designed to preserve food products.
Do not use the unit in an unusual environment.
Do not install the unit where a large amount of oil or steam
is present or where acidic or alkaline solutions or chemical
sprays are used frequently. Doing so may lead to a remarkable drop in performance, electric shock, malfunctions, smoke, and/or fire.
The presence of organic solvents or corrosive gas (i.e.
ammonia, sulfur compounds, and acid) may cause gas
leakage or water leakage.
When installing the unit in a hospital, take appropriate
measures to reduce noise interference.
High-frequency medical equipment may interfere with the
normal operation of the air conditioner or vice versa.
Do not install the unit on or over things that cannot get
wet.
When the humidity level exceeds 80% or if the drainage
system is clogged, the indoor unit may drip water. Drain water is also discharged from the outdoor unit. Install a centralized drainage system if necessary.
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CAUTION
Before installing the unit (moving and reinstalling the unit) and performing
electrical work
Properly ground the unit.
Do not connect the grounding wire to a gas pipe, water pipe,
lightning rod, or grounding wire from a telephone pole. Improper grounding may result in electric shock, smoke, fire,
and/or malfunction due to noise interference.
Do not put tension on the power supply wires.
If tension is put on the wires, they may break and result in
excessive heat, smoke, and/or fire.
Install an earth leakage breaker to avoid the risk of
electric shock.
Failure to install an earth leakage breaker may result in
electric shock, smoke, and/or fire.
Use the kind of power supply wires that are specified
in the installation manual.
The use of wrong kind of power supply wires may result in
current leak, electric shock, and/or fire.
Use breakers and fuses (current breaker, remote
switch <switch + Type-B fuse>, moulded case circuit
breaker) with the proper current capacity.
The use of wrong capacity fuses, steel wires, or copper
wires may result in malfunctions, smoke, and/or fire.
Periodically check the installation base for damage.
If the unit is left on a damaged platform, it may fall and
cause injury.
Properly install the drain pipes according to the instructions in the installation manual. Keep them insulated to avoid dew condensation.
Improper plumbing work may result in water leakage and
damage to the furnishings.
Exercise caution when transporting products.
Products weighing more than 20 kg should not be carried
alone.
Do not carry the product by the PP bands that are used on
some products.
Do not touch the heat exchanger fins. They are sharp and
dangerous.
When lifting the unit with a crane, secure all four corners
to prevent the unit from falling.
Properly dispose of the packing materials.
Nails and wood pieces in the package may pose a risk of
injury.
Plastic bags may pose a risk of choking hazard to chil-
dren. Tear plastic bags into pieces before disposing of
them.
Do not spray water on the air conditioner or immerse
the air conditioner in water.
Otherwise, electric shock and/or fire may result.
When handling units, always wear protective gloves to
protect your hands from metal parts and high-temperature parts.
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Before the test run
CAUTION
Turn on the unit at least 12 hours before the test run.
Keep the unit turned on throughout the season. If the unit is
turned off in the middle of a season, it may result in malfunctions.
To avoid the risk of electric shock or malfunction of the
unit, do not operate switches with wet hands.
Do not touch the refrigerant pipes with bare hands during and immediately after operation.
During or immediately after operation, certain parts of the
unit such as pipes and compressor may be either very cold
or hot, depending on the state of the refrigerant in the unit
at the time. To reduce the risk of frost bites and burns, do
not touch these parts with bare hands.
Do not operate the unit without panels and safety
guards.
Rotating, high-temperature, or high-voltage parts on the unit
pose a risk of burns and/or electric shock.
Do not turn off the power immediately after stopping
the operation.
Keep the unit on for at least five minutes before turning off
the power to prevent water leakage or malfunction.
Do not operate the unit without the air filter.
Dust particles may build up in the system and cause malfunctions.
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CONTENTS
I
II
III
IV
V
VI
VII
VIII
IX
X
Read Before Servicing
[1] Read Before Servicing.............................................................................................................. 3
[2] Necessary Tools and Materials ................................................................................................ 4
[3] Storage of Piping ...................................................................................................................... 5
[4] Pipe Processing........................................................................................................................ 5
[5] Brazing...................................................................................................................................... 6
[6] Air Tightness Test..................................................................................................................... 7
[7] Vacuum Drying (Evacuation) .................................................................................................... 8
[8] Refrigerant Charging ................................................................................................................ 9
[9] Remedies to be taken in case of a Refrigerant Leak................................................................ 9
[10] Characteristics of the Conventional and the New Refrigerants ............................................ 10
[11] Notes on Refrigerating Machine Oil...................................................................................... 11
Restrictions
[1] System configuration .............................................................................................................. 15
[2] Types and Maximum allowable Length of Cables .................................................................. 16
[3] Switch Settings and Address Settings .................................................................................... 22
[4] Sample System Connection ................................................................................................... 29
[5] An Example of a System to which an MA Remote Controller is connected ........................... 30
[6] An Example of a System to which an ME Remote Controller is connected ........................... 40
[7] An Example of a System to which both MA Remote Controller and ME Remote
Controller are connected ........................................................................................................42
[8] Restrictions on Pipe Length.................................................................................................... 44
Outdoor Unit Components
[1] Outdoor Unit Components and Refrigerant Circuit ................................................................. 57
[2] Control Box of the Outdoor Unit.............................................................................................. 59
[3] Outdoor Unit Circuit Board...................................................................................................... 60
Remote Controller
[1] Functions and Specifications of MA and ME Remote Controllers .......................................... 67
[2] Group Settings and Interlock Settings via the ME Remote Controller .................................... 68
[3] Interlock Settings via the MA Remote Controller .................................................................... 72
[4] Using the built-in Temperature Sensor on the Remote Controller .......................................... 73
Electrical Wiring Diagram
[1] Electrical Wiring Diagram of the Outdoor Unit ........................................................................ 77
[2] Electrical Wiring Diagram of Transmission Booster................................................................ 78
Refrigerant Circuit
[1] Refrigerant Circuit Diagram .................................................................................................... 81
[2] Principal Parts and Functions ................................................................................................. 82
Control
[1] Functions and Factory Settings of the Dipswitches ................................................................ 89
[2] Controlling the Outdoor Unit ................................................................................................... 95
[3] Operation Flow Chart............................................................................................................ 107
Test Run Mode
[1] Items to be checked before a Test Run ................................................................................ 115
[2] Test Run Method .................................................................................................................. 116
[3] Operating Characteristic and Refrigerant Amount................................................................ 117
[4] Adjusting the Refrigerant Amount......................................................................................... 117
[5] Refrigerant Amount Adjust Mode.......................................................................................... 120
[6] The following symptoms are normal. .................................................................................... 122
[7] Standard Operation Data (Reference Data) ......................................................................... 123
Troubleshooting
[1] Error Code Lists.................................................................................................................... 151
[2] Responding to Error Display on the Remote Controller........................................................ 154
[3] Investigation of Transmission Wave Shape/Noise ............................................................... 221
[4] Troubleshooting Principal Parts............................................................................................ 224
[5] Refrigerant Leak ................................................................................................................... 244
[6] Compressor Replacement Instructions................................................................................. 246
[7] Troubleshooting Using the Outdoor Unit LED Error Display................................................. 249
LED Monitor Display on the Outdoor Unit Board
[1] How to Read the LED on the Service Monitor ...................................................................... 253
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I
Read Before Servicing
[1] Read Before Servicing ....................................................................................................... 3
[2] Necessary Tools and Materials.......................................................................................... 4
[3] Storage of Piping ............................................................................................................... 5
[4] Pipe Processing.................................................................................................................5
[5] Brazing............................................................................................................................... 6
[6] Air Tightness Test..............................................................................................................7
[7] Vacuum Drying (Evacuation) .............................................................................................8
[8] Refrigerant Charging.......................................................................................................... 9
[9] Remedies to be taken in case of a Refrigerant Leak ......................................................... 9
[10] Characteristics of the Conventional and the New Refrigerants ....................................... 10
[11] Notes on Refrigerating Machine Oil .................................................................................11
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[ I Read Before Servicing ]
CAUTION
I Read Before Servicing
[1] Read Before Servicing
1. Check the type of refrigerant used in the system to be serviced.
Refrigerant Type
Multi air conditioner for building application REPLACE MULTI YJM-A series R410A
2. Check the symptoms exhibited by the unit to be serviced.
Refer to this service handbook for symptoms relating to the refrigerant cycle.
3. Thoroughly read the safety precautions at the beginning of this manual.
4. Preparing necessary tools: Prepare a set of tools to be used exclusively with each type of refrigerant.
Refer to the manuals that came the tools for the correct usage.
5. Verification of the connecting pipes: Verify the type of refrigerant used for the unit to be moved or replaced.
Use refrigerant piping made of phosphorus deoxidized copper. Keep the inner and outer surfaces of the new pipes and the
end of the existing pipes clean and free of such contaminants as sulfur, oxides, dust, dirt, shaving particles, oil, and moisture.
These types of contaminants inside the refrigerant pipes may cause the refrigerant oil to deteriorate.
6. If there is a leak of gaseous refrigerant and the remaining refrigerant is exposed to an open flame, a poisonous gas
hydrofluoric acid may form. Keep workplace well ventilated.
Install new pipes immediately after removing old ones to keep moisture out of the refrigerant circuit.
The use of refrigerant that contains chloride, such as R22, will cause the refrigerating machine oil to deteriorate.
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[ I Read Before Servicing ]
[2] Necessary Tools and Materials
Prepare the following tools and materials necessary for installing and servicing the unit.
Tools for use with R410A (Adaptability of tools that are for use with R22 or R407C)
1. To be used exclusively with R410A (not to be used if used with R22 or R407C)
Tools/Materials Use Notes
Gauge Manifold Evacuation and refrigerant charging Higher than 5.09MPa[738psi] on the
high-pressure side
Charging Hose Evacuation and refrigerant charging The hose diameter is larger than the
conventional model.
Refrigerant Recovery Cylinder Refrigerant recovery
Refrigerant Cylinder Refrigerant charging The refrigerant type is indicated. The
cylinder is pink.
Charging Port on the Refrigerant Cylinder Refrigerant charging The charge port diameter is larger
than that of the current port.
Flare Nut Connection of the unit with the pipes Use Type-2 Flare nuts.
2. Tools and materials that may be used with R410A with some restrictions
Tools/Materials Use Notes
Gas Leak Detector Gas leak detection The ones for use with HFC refrigerant
may be used.
Vacuum Pump Vacuum drying May be used if a check valve adapter
is attached.
Flare Tool Flare processing Flare processing dimensions for the
piping in the system using the new refrigerant differ from those of R22.
Refrigerant Recovery Equipment Refrigerant recovery May be used if compatible with
R410A.
3. Tools and materials that are used with R22 or R407C that may also be used with R410A
Tools/Materials Use Notes
Vacuum Pump with a Check Valve Vacuum drying
Bender Bending pipes
Torque Wrench Tightening flare nuts Only the flare processing dimensions
for pipes that have a diameter of
ø12.70 (1/2") and ø15.88 (5/8") have
been changed.
Pipe Cutter Cutting pipes
Welder and Nitrogen Cylinder Welding pipes
Refrigerant Charging Meter Refrigerant charging
Vacuum Gauge Vacuum level check
4. Tools and materials that must not be used with R410A
Tools/Materials Use Notes
Charging Cylinder Refrigerant charging Prohibited to use
Tools for R410A must be handled with special care to keep moisture and dust from infiltrating the cycle.
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[ I Read Before Servicing ]
[3] Storage of Piping
1. Storage location
Store the piping materials indoors until they are ready to be installed (e.g., storage room on site or at the installer's premise).
If left outdoors, dust, dirt, or moisture may infiltrate and contaminate the pipe, resulting in malfunctions.
2. Sealing the pipe ends
Both ends of the pipes should be sealed until just before brazing.
Keep elbows and T-joints wrapped in plastic bags to keep dust, dirt, and moisture out.
The new refrigerant oil is more than ten times as hygroscopic as the conventional refrigerant oil, such as Suniso, and is more
likely to introduce moisture into the system. To prevent the deterioration of refrigerant oil and resultant compressor failure,
store piping materials with special care to keep moisture out.
[4] Pipe Processing
Use a small amount of ester oil, ether oil, or alkylbenzene to coat flares and flanges.
Use a minimum amount of oil.
Use only ester oil, ether oil, and alkylbenzene.
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[ I Read Before Servicing ]
[5] Brazing
No changes have been made in the brazing procedures. Perform brazing with special care to keep foreign objects (such as oxide
scale, water, and dust) out of the refrigerant system.
Example: Inside the brazed connection
Use of oxidized solder for brazing Use of non-oxidized solder for brazing
1. Items to be strictly observed
Do not conduct refrigerant piping work outdoors if raining.
Use non-oxidized solder.
Use a brazing material (BCuP-3) that requires no flux when brazing between copper pipes or between a copper pipe and
copper coupling.
If installed refrigerant pipes are not immediately connected to the equipment, then braze and seal both ends.
2. Reasons
Refrigerant oil for use with R410A is more than ten times as hygroscopic as the conventional refrigerant oil and is more likely
to introduce moisture into the system, requiring special care in handling to prevent malfunctions.
Do not use flux, which usually contains chloride and form sludge in the refrigerant circuit.
3. Notes
Do not use commercially available antioxidants because they may cause the pipes to corrode or refrigerating machine oil to
deteriorate.
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[ I Read Before Servicing ]
[6] Air Tightness Test
No changes have been made in the detection method. Note that a refrigerant leak detector for R22 will not detect an R410A leak.
Halide torch R22 leakage detector
1. Items to be strictly observed
Pressurize the system with nitrogen to the design pressure (REPLACE MULTI Y(PUHY-RP): 3.3 MPa [479 psi]; REPLACE
MULTI R2 (PURY-RP): 3.6 MPa [523 psi]), and check for refrigerant leakage. Take the temperature fluctuations into account
when measuring pressure.
Refrigerant R410A must be charged in its liquid state (vs. gaseous state).
2. Reasons
Oxygen, if used for an air tightness test, poses a risk of explosion. (Only use nitrogen to check air tightness.)
Refrigerant R410A must be charged in its liquid state. If gaseous refrigerant in the cylinder is drawn out first, the composition
of the remaining refrigerant in the cylinder will change and become unsuitable for use.
3. Notes
R410A does not contain chloride, so leak detectors for use with older types of refrigerants will not detect an R410A leak. Be
sure to use a leak detector designed for use with R410A.
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[ I Read Before Servicing ]
[7] Vacuum Drying (Evacuation)
(Photo1) 15010H (Photo2) 14010
Recommended vacuum gauge:
ROBINAIR 14010 Thermistor Vacuum Gauge
1. Vacuum pump with a reverse-flow check valve (Photo1)
To prevent the vacuum pump oil from flowing into the refrigerant circuit during power OFF or power failure, use a vacuum
pump with a reverse-flow check valve.
A reverse-flow check valve may also be added to the vacuum pump currently in use.
2. Standard of vacuum degree (Photo 2)
Use a vacuum pump that attains 0.5Torr(65Pa) or lower degree of vacuum after 5 minutes of operation, and connect it directly
to the vacuum gauge. Use a pump well-maintained with an appropriate lubricant. A poorly maintained vacuum pump may not
be able to attain the desired degree of vacuum.
3. Required precision of vacuum gauge
Use a vacuum gauge that registers a vacuum degree of 5Torr(650Pa) and measures at intervals of 1Torr(130Pa). (A recommended vacuum gauge is shown in Photo2.)
Do not use a commonly used gauge manifold because it cannot register a vacuum degree of 5Torr(650Pa).
4. Evacuation time
After the degree of vacuum has reached 5Torr(650Pa), evacuate for an additional 1 hour. (A thorough vacuum drying re-
moves moisture in the pipes.)
Verify that the vacuum degree has not risen by more than 1Torr(130Pa) 1hour after evacuation. A rise by less than
1Torr(130Pa) is acceptable.
If the vacuum is lost by more than 1Torr(130Pa), conduct evacuation, following the instructions in section 6. Special vacuum
drying.
5. Procedures for stopping vacuum pump
To prevent the reverse flow of vacuum pump oil, open the relief valve on the vacuum pump side, or draw in air by loosening
the charge hose, and then stop the operation.
The same procedures should be followed when stopping a vacuum pump with a reverse-flow check valve.
6. Special vacuum drying
When 5Torr(650Pa) or lower degree of vacuum cannot be attained after 3 hours of evacuation, it is likely that water has pen-
etrated the system or that there is a leak.
If water infiltrates the system, break the vacuum with nitrogen. Pressurize the system with nitrogen gas to
0.5kgf/cm
2
G(0.05MPa) and evacuate again. Repeat this cycle of pressurizing and evacuation either until the degree of vac-
uum below 5Torr(650Pa) is attained or until the pressure stops rising.
Only use nitrogen gas for vacuum breaking. (The use of oxygen may result in an explosion.)
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[ I Read Before Servicing ]
[8] Refrigerant Charging
Cylinder with a siphon
Cylinder without a siphon
Cylin-
Cylin-
der
der
Cylinder color R410A is pink. Refrigerant charging in the liquid state
Valve Valve
liquid
liquid
1. Reasons
R410A is a pseudo-azeotropic HFC blend (boiling point R32=-52°C[-62°F], R125=-49°C[-52°F]) and can almost be handled
the same way as a single refrigerant, such as R22. To be safe, however, draw out the refrigerant from the cylinder in the liquid
phase. If the refrigerant in the gaseous phase is drawn out, the composition of the remaining refrigerant will change and become unsuitable for use.
2. Notes
When using a cylinder with a siphon, refrigerant is charged in the liquid state without the need for turning it upside down. Check
the type of the cylinder on the label before use.
[9] Remedies to be taken in case of a Refrigerant Leak
If the refrigerant leaks out, it may be replenished. The entire refrigerant does not need to be replaced. (Charge refrigerant in the
liquid state.)
Refer to "IX [5] Refrigerant Leak."(page 244)
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[ I Read Before Servicing ]
[10] Characteristics of the Conventional and the New Refrigerants
1. Chemical property
As with R22, the new refrigerant (R410A) is low in toxicity and chemically stable nonflammable refrigerant.
However, because the specific gravity of vapor refrigerant is greater than that of air, leaked refrigerant in a closed room will
accumulate at the bottom of the room and may cause hypoxia.
If exposed to an open flame, refrigerant will generate poisonous gases. Do not perform installation or service work in a confined area.
New Refrigerant (HFC type) Conventional Refriger-
ant (HCFC type)
R410A R407C R22
R32/R125 R32/R125/R134a R22
Composition (wt%) (50/50) (23/25/52) (100)
Type of Refrigerant Pseudo-azeotropic
Refrigerant
Non-azeotropic
Refrigerant
Single Refrigerant
Chloride Not included Not included Included
Safety Class A1/A1 A1/A1 A1
Molecular Weight 72.6 86.2 86.5
Boiling Point (°C/°F) -51.4/-60.5 -43.6/-46.4 -40.8/-41.4
Steam Pressure
1.557/226 0.9177/133 0.94/136
(25°C,MPa/77°F,psi) (gauge)
Saturated Steam Density
(25°C,kg/m
3
/77°F,psi)
64.0 42.5 44.4
Flammability Nonflammable Nonflammable Nonflammable
Ozone Depletion Coefficient (ODP)
Global Warming Coefficient (GWP)
Refrigerant Charging Method Refrigerant charging in
Replenishment of Refrigerant after a Refrigerant
*1
*2
0 0 0.055
1730 1530 1700
the liquid state
Refrigerant charging in
the liquid state
Refrigerant charging in
the gaseous state
Available Available Available
Leak
*1 When CFC11 is used as a reference
*2 When CO
is used as a reference
2
2. Refrigerant composition
R410A is a pseudo-azeotropic HFC blend and can almost be handled the same way as a single refrigerant, such as R22. To
be safe, however, draw out the refrigerant from the cylinder in the liquid phase. If the refrigerant in the gaseous phase is drawn
out, the composition of the remaining refrigerant will change and become unsuitable for use.
If the refrigerant leaks out, it may be replenished. The entire refrigerant does not need to be replaced.
3. Pressure characteristics
The pressure in the system using R410A is 1.6 times as great as that in the system using R22.
Pressure (gauge)
Temperature (°C/°F)
R410A R407C R22
MPa/psi MPa/psi MPa/psi
-20/-4 0.30/44 0.18/26 0.14/20
0/32 0.70/102 0.47/68 0.40/58
20/68 1.34/194 0.94/136 0.81/117
40/104 2.31/335 1.44/209 1.44/209
60/140 3.73/541 2.44/354 2.33/338
65/149 4.17/605 2.75/399 2.60/377
HWE10010 GB
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[ I Read Before Servicing ]
[11] Notes on Refrigerating Machine Oil
1. Refrigerating machine oil in the HFC refrigerant system
HFC type refrigerants use a refrigerating machine oil different from that used in the R22 system.
Note that the ester oil used in the system has properties that are different from commercially available ester oil.
Refrigerant Refrigerating machine oil
R22 Mineral oil
R407C Ester oil
R410A Ester oil
2. Effects of contaminants
*1
Refrigerating machine oil used in the HFC system must be handled with special care to keep contaminants out.
The table below shows the effect of contaminants in the refrigerating machine oil on the refrigeration cycle.
3. The effects of contaminants in the refrigerating machine oil on the refrigeration cycle.
Cause Symptoms Effects on the refrigerant cycle
Water infiltration Frozen expansion valve
and capillary tubes
Clogged expansion valve and capillary tubes
Poor cooling performance
Compressor overheat
Motor insulation failure
Burnt motor
Coppering of the orbiting scroll
Lock
Burn-in on the orbiting scroll
Hydrolysis
Sludge formation and adhesion
Acid generation
Oxidization
Oil degradation
Air infiltration Oxidization
Adhesion to expansion valve and capillary
tubes
Clogged expansion valve, capillary tubes, and
drier
Poor cooling performance
Infiltration of
contaminants
Dust, dirt
Infiltration of contaminants into the compressor
Compressor overheat
Burn-in on the orbiting scroll
Sludge formation and adhesion Clogged expansion valve and capillary tubes
Mineral oil
etc.
Poor cooling performance
Compressor overheat
Oil degradation Burn-in on the orbiting scroll
*1. Contaminants is defined as moisture, air, processing oil, dust/dirt, wrong types of refrigerant, and refrigerating machine oil.
HWE10010 GB
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[ I Read Before Servicing ]
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GBHWE10010
Page 22
II
Restrictions
[1] System configuration ....................................................................................................... 15
[2] Types and Maximum allowable Length of Cables ........................................................... 16
[3] Switch Settings and Address Settings .............................................................................22
[4] Sample System Connection............................................................................................. 29
[5] An Example of a System to which an MA Remote Controller is connected.....................30
[6] An Example of a System to which an ME Remote Controller is connected.....................40
[7] An Example of a System to which both MA Remote Controller and ME Remote
Controller are connected.................................................................................................. 42
[8] Restrictions on Pipe Length ............................................................................................. 44
HWE10010 GB
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[ II Restrictions ]
II Restrictions
[1] System configuration
1. Table of compatible indoor units
The table below summarizes the types of indoor units that are compatible with different types of outdoor units.
(1) Standard combinations
Outdoor
units
Composing units Maximum total capacity
of connectable indoor
units
Maximum number
of connectable in-
door units
Types of connectable in-
door units
200 - - - 100 - 260 17 P15 - P250 models
250 - - - 125 - 325 21
R410A series indoor units
300 - - - 150 - 390 26
350 - - - 175 - 455 30
400 200 200 - 200 - 520 32
450 200 250 - 225 - 585 32
500 250 250 - 250 - 650 32
550 250 300 - 275 - 715 32
600 300 300 - 300 - 780 32
650 300 350 - 325 - 845 32
700 200 250 250 350 - 910 32
750 250 250 250 375 - 975 32
800 250 250 300 400 - 1040 32
850 250 300 300 425 - 1105 32
900 300 300 300 450 - 1170 32
1) "Maximum total capacity of connectable indoor units" refers to the sum of the numeric values in the indoor unit model names.
2) If the total capacity of the indoor units that are connected to a given outdoor unit exceeds the capacity of the outdoor unit, the
indoor units will not be able to perform at the rated capacity when they are operated simultaneously. Select a combination of
units so that the total capacity of the connected indoor units is at or below the capacity of the outdoor unit whenever possible.
HWE10010 GB
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[ II Restrictions ]
TB 3 TB 7 TB 3 TB
7
TB
3
TB 3 TB
7
TB
7
TB 3 TB
7
TB
3
TB
7
TB 3 TB 7 TB 3 TB
7
TB
3
TB 3 TB
7
TB
7
TB 3 TB
7
TB
3
TB
7
2-core shielded cable
2-core shielded cable
Indoor unit
Outdoor unit
TB3: Terminal block for indoor-outdoor transmission line TB7: Terminal block for centralized control
Remote Controller
Indoor unit
Outdoor unit
Remote Controller
multiple-core cable
[2] Types and Maximum allowable Length of Cables
1. Wiring work
(1) Notes
1) Have all electrical work performed by an authorized electrician according to the local regulations and instructions in this manual.
2) Install external transmission cables at least 5cm [1-31/32"] away from the power supply cable to avoid noise interference.
(Do not put the control cable and power supply cable in the same conduit tube.)
3) Provide grounding for the outdoor unit as required.
4) Run the cable from the electric box of the indoor or outdoor unit in such way that the box is accessible for servicing.
5) Do not connect power supply wiring to the terminal block for transmission line. Doing so will damage the electronic components on the terminal block.
6) Use 2-core shielded cables as transmission cables.
Use a separate 2-core control cable for each refrigerant system. Do not use a single multiple-core cable to connect indoor
units that belong to different refrigerant systems. The use of a multiple-core cable may result in signal transmission errors and
malfunctions.
(2) Control wiring
Different types of control wiring are used for different systems.
Refer to section "[5] An Example of a System to which an MA Remote Controller is connected - [7] An Example of a System
to which both MA Remote Controller and ME Remote Controller are connected" before performing wiring work.
Types and maximum allowable length of cables
Control lines are categorized into 2 types: transmission line and remote controller line.
Use the appropriate type of cables and observe the maximum allowable length specified for a given system. If a given system
has a long transmission line or if a noise source is located near the unit, place the unit away from the noise source to reduce
noise interference.
1) M-NET transmission line
Cable type
Maximum transmission
line distance between the
outdoor unit and the far-
Maximum transmission
line distance for central-
thest indoor unit
ized control and Indoor/
outdoor transmission line
(Maximum line distance
via outdoor unit)
*1 If unshielded cables are used, consult your dealer.
Facility
type
All facility types
Type Shielded cable CVVS, CPEVS, MVVS*1
Number of
cores
Cable size Larger than 1.25mm
2-core cable
2
[AWG16]
200 m [656ft] max.
500 m [1640ft] max.
*The maximum overall line length from the power supply unit on the transmission lines for
centralized control to each outdoor unit or to the system controller is 200m [656ft] max.
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[ II Restrictions ]
2) Remote controller wiring
Type CVV CVV
Number of
cores
Cable type
Cable size
Maximum overall line
length
*1 MA remote controller refers to MA remote controller (PAR-20MAA, PAR-21MAA), MA simple remote controller, and
wireless remote controller.
*2 ME remote controller refers to ME remote controller and ME simple remote controller.
*3 The use of cables that are smaller than 0.75mm
*4 When connected to the terminal block on the Simple remote controller, use cables that meet the cable size specifi-
cations shown in the parenthesis.
MA remote controller
*1
2-core cable 2-core cable
0.3 to 1.25mm
[AWG22 to 16]
(0.75 to 1.25mm
[AWG18 to 16]
2 *3
2 ) *4
0.3 to 1.25mm
[AWG22 to 16]
(0.75 to 1.25mm
[AWG18 to 16]
The section of the cable that exceeds 10m
200 m [656ft] max.
[32ft] must be included in the maximum indoor-outdoor transmission line distance.
2
(AWG18) is recommended for easy handling.
ME remote controller
2 *3
2 ) *4
*2
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[ II Restrictions ]
(3) Reusability check of the existing transmission lines for Replace Multi units
Check the existing wires for damage to insulation by measuring the resistance between the lead and the
ground with a 500 V ohmmeter. If the insulation resistance is less than 100 M, replace the wires.
Use the flowcharts on the following pages to determine the reusability of the existing transmission lines.
Obtain the system configuration drawing, fill out the checklist, and make a decision based on them.
Existing transmission lines reusability checklist
Check items Notes
1. Remote controller cable (MA remote controller)
(1) Length
(2) Cable size
(3) Number of cores
(4) Cable type (shielded/unshielded)
2. Remote controller cable (ME remote controller)
(1) Length *1
(2) Cable size
(3) Number of cores
(4) Cable type (shielded/unshielded)
3. Remote controller cable (system controller)
(1) Length *1
(2) Cable size
(3) Number of cores
(4) Cable type (shielded/unshielded)
(5) System controller connection (Indoor unit
system/centralized control system)
4. Indoor-outdoor transmission line
(1) Refrigerant system (Single/Multiple)
(2) Length of transmission line to the farthest unit *1
(3) Cable size
(4) Number of cores
(5) Cable type (shielded/unshielded)
(6) Number of connected indoor units
5. Centralized control transmission line
(1) Length of transmission line to the farthest unit *1
(2) Cable size
(3) Number of cores
(4) Cable type (shielded/unshielded)
6. Availability of system configuration drawing (Obtain one as
much as possible.)
7. Noise-related problems with the old units
(Write down the nature of the problem in the “Notes” column,
if any.)
Findings
mm
Cores
Shielded/Unshielded
mm
Cores
Shielded/Unshielded
mm
Cores
Shielded/Unshielded
Indoor/Centralized
Single/Multiple
mm
Cores
Shielded/Unshielded
units
mm
Cores
Shielded/Unshielded
Available/Not available
Available/Not available
m
2
m
2
m
2
m
2
m
2
8. Are there any high-frequency medical equipment in the adjacent
Available/Not available
area that could cause noise-interference?
(Write down the specific nature of the concerns in the “Notes”
column, if any.)
*1: If the remote controller (ME/System controller) length exceeds 10 m, include the exceeded length in the calculation of the
transmission line length (indoor-outdoor transmission line/centralized control system).
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[ II Restrictions ]
Is the 2-core cable used?
Is the 2-core cable used?
Is the 2-core cable used?
YES
NO
YES
NO
YES
YES YES
NO
YES
NO
YES
YES
YES
Reusability of MA remote controller wiring
Reusability of System controller wiring
Reusability of M-NET remote controller witing
NO
Is the wiring length
less than 200m?
Is the wiring of
less than 10m?
Refer to Table A.
Handle the non-using wiring as
shown in figure A.
NO
Please contact MITSUBISHI
ELECTRIC.
NO
Please contact MITSUBISHI
ELECTRIC.
NO
Please contact MITSUBISHI
ELECTRIC.
Refer to Table A.
Handle the non-using wiring as
shown in figure A.
Refer to Table A.
Handle the non-using wiring as
shown in figure A.
If the wiring is more than 10m, include the
exceeding length to the total wiring length.
When 10m is exceeded, use the shielded
cable for exceeding length.
If the wiring is more than 10m, include the
exceeding length to the total wiring length.
When 10m is exceeded, use the shielded
cable for exceeding length.
Make wiring length less than
200m.
Is the shielded
wiring used?
Is the shielded
wiring used?
Is the shielded
wiring used?
Go to "Reusability of
Transmission line".
Go to "Reusability of
Transmission line".
Go to "Reusability of
Transmission line".
shielded wire
Ａ
Ｂ
Ｓ
Ａ
Ｂ
Ｓ
Figure A. Non-using wiring
Side:
Close to power supply unit
(Outdoor unit, Power supply unit)
Non using wiring on the power supply side (Outdoor unit, Power supply
unit) should be connected to the shield terminal. The non-using wiring on
the opposite side should be open and insulated.
Type of cable
Cable size
Remarks
Sheathed 2-core cable (unshielded)
CVV
2
Shielding wire (2-core)
CVVS, CPEVS or MVVS
Transmission cables ME Remote controller cables
CVVS, MVVS : PVC insulated PVC jacketed shielded control cable
CPEVS : PE insulated PVC jacketed shielded communication cable
Connected with simple remote controller.
CVV : PV insulated PVC sheathed control cable
—
Max length : 200m [656ft]
(Li)
MA Remote controller cables
When 10m [32ft] is exceeded, use the
shielded cable for exceeding length.
More than 1.25 [AWG16]
2
0.3 1.25 [AWG22 16]
(0.75 1.25 [AWG18 16])
2
2
0.3 1.25 [AWG22 16]
(0.75 1.25 [AWG18 16])
Table A
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[ II Restrictions ]
Reusability of Transmission line
Is the 2-core cable used?
Is the shielded wiring used?
Refer to Table A.
Fix the ground fault current.
Less than 200m More than 0.5mm
2
Less than 130m More than 0.3mm
2
Wiring diameter
Chart A. Centralized transmission line applicable diameter
YES
YES
NO
Please contact MITSUBISHI
ELECTRIC.
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
YES
NO
Is the current in
normal state without
ground fault?
Is the farthest
transmission line between OU and
IU less than 200m?
Farthest transmission line of
centralized controller must be less
than 200m.
To find out the reusability, check the number
of indoor units, farthest length of
transmission line, and read the applicable
diameter from diagram B.
Handle the wiring that are not used
as shown in figure A.
Farthest transmission line for
centralized control system must be
less than 500m.
Is the farthest
transmission line of centralized
control system less
than 500m?
Does the diameter of the
transmission line match the
figures in Table A?
Length between power
supply unit to outdoor unit
and system controller
Shielded wiring should be connected
to the terminal at the power supply
unit side (outdoor unit).
Is the system stand-alone?
Existing transmission line can
be reused.
ࠛ
Is the diameter of
the current wiring thicker
than the diameter read
from chart A?
Change the centralized
transmission line
diameter to more than
1.25mm
2
.
HWE10010 GB
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[ II Restrictions ]
0
50
100
150
200
0 5 10 15 20 25 32
30
Number of indoor units
Length of transmission line to the farthest unit (m)
0.75mm
2
0.5mm
2
MA remote controller
Diagram B Checking the cable size
0.3mm
2
1.25mm
2
M-NET remote controller
Number of indoor units
Length of transmission line to the farthest unit (m)
0.5mm
2
0.75mm
2
0.3mm
2
1.25mm
2
0
50
100
150
200
0 5 10 15 20
HWE10010 GB
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[ II Restrictions ]
[3] Switch Settings and Address Settings
1. Switch setting
Refer to section "[5] An Example of a System to which an MA Remote Controller is connected - [7] An Example of a System
to which both MA Remote Controller and ME Remote Controller are connected" before performing wiring work.
Set the switches while the power is turned off.
If the switch settings are changed while the unit is being powered, those changes will not take effect, and the unit will not
function properly.
Units on which to set the switches Symbol Units to which the power must be shut off
CITY MULTI indoor unit Main/sub unit IC Outdoor units
LOSSNAY, OA processing unit
*1
LC Outdoor units
Air handling kit IC Outdoor units
unit
ME remote controller Main/sub remote
RC Outdoor units
controller
*3
and Indoor units
*3
and LOSSNAY
*3
or field supplied air handling
*3
MA remote controller Main/sub remote
MA Indoor units
controller
CITY MULTI outdoor unit
*2
OC,OS1,OS2 Outdoor units
*3
*1. Applicable when LOSSNAY units are connected to the indoor-outdoor transmission line.
*2. The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2 in the order of
capacity from large to small (if two or more units have the same capacity, in the order of address from small to large).
*3. Turn off the power to all the outdoor units in the same refrigerant circuit.
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[ II Restrictions ]
2. M-NET Address settings
(1) Address settings table
The need for address settings and the range of address setting depend on the configuration of the system.
Unit or controller Address setting
Setting method Facto-
range
CITY MULTI indoor unit
Main/sub unit 00,
01 to 50
*1
Assign the smallest address to the main indoor unit in the
group, and assign sequential address numbers to the rest
of the indoor units in the same group.
*4
M-NET adapter
M-NET control interface
Free Plan adapter
LOSSNAY, OA processing unit
Air handling kit
00,
01 to 50
*1
Assign an arbitrary but unique address to each of
these units after assigning an address to all indoor
units.
ME remote controller
Main remote
controller
Sub remote
controller
101 to 150 Add 100 to the smallest address of all the indoor units
in the same group.
151 to 200
*2
Add 150 to the smallest address of all the indoor units
in the same group.
MA remote controller No address settings required. (The main/sub setting must be made if 2
remote controllers are connected to the system.)
CITY MULTI outdoor unit 00,
51 to 100
*1,*3
Assign sequential addresses to the outdoor units in the
same refrigerant circuit. The outdoor units in the same
refrigerant circuit are automatically designated as OC
and OS.
*5
ry set-
ting
00
00
101
Main
00
System controller Group remote
controller
System remote
controller
ON/OFF remote controller
Schedule timer
(compatible
201 to 250 Assign an address that equals the sum of the smallest
group number of the group to be controlled and 200.
Assign an arbitrary but unique address within the
range listed on the left to each unit.
Assign an address that equals the sum of the smallest
group number of the group to be controlled and 200.
Assign an arbitrary but unique address within the
range listed on the left to each unit.
201
202
with M-NET)
Central controller
G(B)-50A
000,
201 to 250
Assign an arbitrary but unique address within the
range listed on the left to each unit. The address must
be set to "000" to control the K-control unit.
LM adapter 201 to 250 Assign an arbitrary but unique address within the
000
247
range listed on the left to each unit.
*1. Address setting is not required for a City Multi system that consists of a single refrigerant circuit (with some exceptions).
*2. To set the ME remote controller address to "200", set the rotary switches to "00".
*3. To set the outdoor unit address to "100," set the rotary switches to "50."
*4. Some indoor units have 2 or 3 controller boards that require address settings.
No. 2 controller board address must be equal to the sum of the No. 1 controller board address and 1, and the No.3
controller board address must equal to the No. 1 controller address and 2.
*5. The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2 in the order of
capacity from large to small (if two or more units have the same capacity, in the order of address from small to large).
HWE10010 GB
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[ II Restrictions ]
(2) Power supply switch connector connection on the outdoor unit
(Factory setting: The male power supply switch connector is connected to CN41.)
System configuration
Connection to
the system controller
Power supply unit
for transmission
lines
Group operation
of units in a system with multiple
Power supply switch connector connection
outdoor units
System with
one outdoor unit
System with
multiple outdoor
units
_ _ _ Leave CN41 as it is
(Factory setting)
Not connected _ Not grouped
Grouped Disconnect the male connector from the fe-
With connection
to the indoor
unit system
With connection
to the centralized control
system
Not required Grouped/not
grouped
Not required
(Powered from the
*1
Grouped/not
grouped
outdoor unit)
Required *
1
Grouped/not
grouped
male power supply switch connector (CN41)
and connect it to the female power supply
switch connector (CN40) on only one of the
outdoor units.
*Connect the S (shielded) terminal on the ter-
minal block (TB7) on the outdoor unit whose
CN41 was replaced with CN40 to the
ground terminal ( ) on the electric box.
Leave CN41 as it is
(Factory setting)
*2
*1 The need for a power supply unit for transmission lines depends on the system configuration.
*2 The replacement of the power jumper connector from CN41 to CN40 must be performed on only one outdoor unit in the
system.
(3) Settings for the centralized control switch for the outdoor unit (Factory setting: SW2-1 are set to OFF.)
System configuration Centralized control switch settings *
1
Connection to the system controller Not connected Leave it to OFF. (Factory setting)
Connection to the system controller Connected *
2
ON
*1 Set SW2-1 on all outdoor units in the same refrigerant circuit to the same setting.
*2 When only the LM adapter is connected, leave SW2-1 to OFF (as it is).
(4) Selecting the position of temperature detection for the indoor unit (Factory setting: SW1-1 set to "OFF".)
To stop the fan during heating Thermo-OFF (SW1-7 and 1-8 on the indoor units to be set to ON), use the built-in thermistor
on the remote controller or an optional thermistor.
1) To use the built-in sensor on the remote controller, set the SW1-1 to ON.
Some models of remote controllers are not equipped with a built-in temperature sensor.
Use the built-in temperature sensor on the indoor unit instead.
When using the built-in sensor on the remote controller, install the remote controller where room temperature can be detected.
(Note) Factory setting for SW1-1 on the indoor unit of the All-Fresh Models is ON.
2) When an optional temperature sensor is used, set SW1-1 to OFF, and set SW3-8 to ON.
When using an optional temperature sensor, install it where room temperature can be detected.
(5) Various start-stop controls (Indoor unit settings)
Each indoor unit (or group of indoor units) can be controlled individually by setting SW 1-9 and 1-10.
Function
Power ON/OFF by
the plug
*1,*2,*3
Automatic restoration
after power failure
Operation of the indoor unit when the operation is resumed after the unit was
stopped
Indoor unit will go into operation regardless of its operation status before power
off (power failure). (In approx. 5 minutes)
Indoor unit will go into operation if it was in operation when the power was
turned off (or cut off due to power failure). (In approx. 5 minutes)
Indoor unit will remain stopped regardless of its operation status before power
Setting (SW1)
910
OFF ON
ON OFF
OFF OFF
off (power failure).
*1. Do not cut off power to the outdoor unit. Cutting off the power supply to the outdoor unit will cut off the power supply to the
crankcase heater and may cause the compressor to malfunction when the unit is put back into operation.
*2. Not applicable to units with a built-in drain pump or humidifier.
*3. Models with a built-in drain pump cannot be turned on/off by the plug individually. All the units in the same refrigerant cir-
cuits will be turned on or off by the plug.
*4. Requires that the dipswitch settings for all the units in the group be made.
*5. To control the external input to and output from the air conditioners with the PLC software for general equipment via the
G(B)-50A, set SW1-9 and SW1-10 to ON. With these settings made, the power start-stop function becomes disabled. To
use the auto recovery function after power failure while these settings are made, set SW1-5 to ON.
*4 *5
HWE10010 GB
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[ II Restrictions ]
CAUTION
(6) Miscellaneous settings
Cooling-only setting for the indoor unit: Cooling only model (Factory setting: SW3-1 "OFF.")
When using indoor unit as a cooling-only unit, set SW3-1 to ON.
(7) Various types of control using input-output signal connector on the outdoor unit (various connection options)
Type Usage Function
Input Prohibiting cooling/heating operation (thermo OFF) by an external
DEMAND (level) CN3D
input to the outdoor unit.
*It can be used as the DEMAND control device for each system.
Performs a low level noise operation of the outdoor unit by an external input to the outdoor unit.
Low-noise mode
*3*4
(level)
Terminal
to be
*1
used
*2
Option
Adapter for
external input
(PACSC36NA-E)
* It can be used as the silent operation device for each refrigerant
system.
Forces the outdoor unit to perform a fan operation by receiving signals from the snow sensor.
*5
Cooling/heating operation can be changed by an external input to
Snow sensor signal
CN3S
input (level)
Auto-changeover CN3N
the outdoor unit.
Out-
How to extract signals from the outdoor unit
put
*It can be used as an operation status display device.
*It can be used for an interlock operation with external devices.
Operation status of
the compressor
Error status
*5
*6
CN51 Adapter for
external output
(PACSC37SA-E)
*1. For detailed drawing, refer to "Example of wiring connection".
*2. For details, refer to (1) through (4) shown below.
*3. Low-noise mode is valid when Dip SW4-4 on the outdoor unit is set to OFF. When DIP SW4-4 is set to ON, 4 levels of
on-DEMAND are possible, using different configurations of low-noise mode input and DEMAND input settings.When 2
or more outdoor units exist in one refrigerant circuit system, 8 levels of on-DEMAND are possible. When 3 outdoor units
exist in one refrigerant circuitsystem, 12 levels of on-DEMAND are possible.
*4. By setting Dip SW5-5, the Low-noise mode can be switched between the Capacity priority mode and the Low-noise pri-
ority mode.
When SW5-5 is set to ON: The Low-noise mode always remains effective.
When SW5-5 is set to OFF: The Low-noise mode is cancelled when certain outside temperature or pressure criteria are
met, and the unit goes into normal operation (capacity priority mode).
Low-noise mode is effective Capacity priority mode becomes effective
Cooling Heating Cooling Heating
TH7 < 30°C [86°F]
and
63HS1 < 32kg/cm
2
TH7 > 3°C [37°F]
and
63LS > 4.6kg/cm
TH7 > 35°C [95°F]
2
or
63HS1 > 35kg/cm
2
TH7 < 0°C [32°F]
or
63LS < 3.9kg/cm
2
*5. Each outdoor unit in the system with multiple outdoor units requires the signal input/output setting to be made.
*6. Take out signals from the outdoor unit (OC) if multiple outdoor units exist in a single system.
1) Wiring should be covered by insulation tube with supplementary insulation.
2) Use relays or switches with IEC or equivalent standard.
3) The electric strength between accessible parts and control circuit should have 2750V or more.
HWE10010 GB
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[ II Restrictions ]
(1) CN51
(2) CN3S
CN51
X
Y
L
1
L
2
ecruos rewop pmaL
Distant control
board
Relay circuit Adapter
1
Outdoor unit
control board
Preparations
in the field
Maximum cable
length is 10m
5
4
3
X
Y
L1 : Outdoor unit error display lamp
L2 : Compressor operation lamp (compressor running state)
X, Y : Relay (coil =<0.9W : DC12V)
1. Optional part : PAC-SC37SA-E or field supply.
2. Optional part : PAC-SC36NA-E or field supply.
X : Relay
Snow sensor : The outdoor fan runs when X is closed
in stop mode or thermostat mode.
X
CN3S
Preparations
in the field
Maximum cable
length is 10m
Adapter
2
Outdoor unit
control board
2
3
1
Contact rating voltage >= DC15V
Contact rating current >= 0.1A
Minimum applicable load =< 1mA at DC
Relay circuit
(3) CN3N
2. Optional part : PAC-SC36NA-E or field supply.
Preparations
in the field
OFF
CoolingONHeating
Normal
Y
OFF
ON
X
Contact rating voltage >= DC15V
Contact rating current >= 0.1A
Minimum applicable load =< 1mA at DC
X : Cooling / Heating
Y : Validity / Invalidity of X
X,Y : Relay
CN3N
X
Y
Relay circuit
Adapter
2
Outdoor unit
control board
Maximum cable
length is 10m
1
2
3
Example of wiring connection
(4) CN3D
Relay circuit
Adapter
X
Y
Preparations
in the field
Maximum cable
length is 10m
X : Low-noise mode
Y : Compressor ON/OFF
X,Y : Relay
2. Optional part : PAC-SC36NA-E or field supply.
Contact rating voltage >= DC15V
Contact rating current >= 0.1A
Minimum appicable load =< 1mA at DC
2
1
2
3
Outdoor unit
control board
CN3D
Relay circuit
Preparations
in the field
X : Low-noise mode
X : Relay
2. Optional part : PAC-SC36NA-E or field supply.
Low-noise mode : The noise level is reduced by controlling the maximum
Outdoor unit
1
2
2
control board
CN3D
Adapter
X
3
Maximum cable
length is 10m
Contact rating voltage >= DC15V
Contact rating current >= 0.1A
Minimum applicable load =< 1mA at DC
fan frequency and maximum compressor frequency.
HWE10010 GB
- 26 -
Page 36
[ II Restrictions ]
1. Demand control
(1) General outline of control
Demand control is performed by using the external signal input to the 1-2 and 1-3 pins of CN3D on the outdoor units (OC,
OS1, and OS2).
Between 2 and 12 steps of demand control is possible by setting DIP SW4-4 on the outdoor units (OC, OS1, and OS2).
Table.1
DipSW4-4
No Demand control switch
Input to CN3D *2
OC OS1 OS2
(a) 2 steps(0-100%) OFF OFF OFF OC
(b) 4 steps(0-50-75-100%) ON OFF OFF OC
(c) OFF ON OFF OS1
(d) OFF OFF ON OS2
(e) 8 steps(0-25-38-50-63-75-88-100%) ON ON OFF OC and OS1
(f) ON OFF ON OC and OS2
(g) OFF ON ON OS1 and OS2
(h) 12 steps(0-17-25-34-42-50-59-67-75-
ON ON ON OC, OS1, and OS2
84-92-100%)
*1. Available demand functions
RP200 - RP350YJM models (single-outdoor-unit system): 2 and 4 steps shown in the rows (a) and (b) in the table above
only.
RP400 - RP650YSJM models (two-outdoor-unit system OC+OS1): 2-8 steps shown in the rows (a), (b), (c), and (e) in the
table above only.
RP700 - RP900YSJM models (three-outdoor-unit system OC+OS1+OS2): 2-12 steps shown in the rows (a)-(h) in the table
above.
*2. External signal is input to CN3D on the outdoor unit whose SW4-4 is set to ON. When SW4-4 is set to OFF on all outdoor
units, the signal is input to the CN3D on the OC.
Outdoor units whose SW4-4 is set to ON are selectable in a single refrigerant system.
*3. If wrong sequence of steps are taken, the units may go into the Thermo-OFF (compressor stop) mode.
Ex) When switching from 100% to 50%
(Incorrect) 100% to 0% to 50% : The units may go into the Thermo-OFF mode.
(Correct) 100% to 75% to 50%
*4. The percentage of the demand listed in the table above is an approximate value based on the compressor volume and
does not necessarily correspond with the actual capacity.
*5. Notes on using demand control in combination with the low-noise mode
To enable the low-noise mode, it is necessary to short-circuit 1-2 pin of CN3D on the outdoor unit whose SW4-4 is set to
OFF.
When SW4-4 is set to ON on all outdoor units, the following operations cannot be performed.
Performing 4-step demand in combination with the low-noise operation in a single-outdoor-unit system.
Performing 8-step demand in combination with the low-noise operation in a two-outdoor-unit system.
Performing 12-step demand in combination with the low-noise operation in a three-outdoor-unit system.
(2) Contact input and control content
1) 2-step demand control
The same control as the Thermo-OFF is performed by closing 1-3 pin of CN3D.
CN3D
1-3P
Open x = 100%
Close x = 0%
2) 4-step demand control (When SW4-4 is set to ON on an outdoor unit)
Demand capacity is shown below.
CN3D 1-2P
1-3P Open Close
Open x = 100% x = 75%
Close x = 0% x = 50%
HWE10010 GB
- 27 -
Page 37
[ II Restrictions ]
3) 8-step demand control (When SW4-4 is set to ON on two outdoor units)
Demand capacity is shown below.
8-step demand No.2 CN3D
1-2P Open Short-circuit
No.1 CN3D 1-2P 1-3P Open Short-circuit Open Short-circuit
Open Open 100% 50% 88% 75%
Short-circuit 50% 0% 38% 25%
Short-circuit Open 88% 38% 75% 63%
Short-circuit 75% 25% 63% 50%
*1. The outdoor units whose SW4-4 is set to ON are designated as No. 1and No. 2 in the order of address from small to large.
Ex) When outdoor units whose SW4-4 is set to ON are designated as OS1 and OS2, OS1=No. 1 and OS2=No. 2.
4) 12-step demand control (When SW4-4 is set to ON on three outdoor units)
Demand capacity is shown below.
12-step
demand
No.1
CN3D
12-step
demand
No.1
CN3D
No.2 CN3D 1-2P Open
1-3P Open Short-circuit
No.3 CN3D 1-2P Open Short-circuit Open Short-circuit
1-2P 1-3P Open Short-
circuit
Open Short-
circuit
Open Short-
circuit
Open Short-
circuit
Open Open 100% 67% 92% 84% 67% 34% 59% 50%
Short-
67% 34% 59% 50% 34% 0% 25% 17%
circuit
Short-circuit Open 92% 59% 84% 75% 59% 25% 50% 42%
Short-
84% 50% 75% 67% 50% 17% 42% 34%
circuit
No.2 CN3D 1-2P Short-circuit
1-3P Open Short-circuit
No.3 CN3D 1-2P Open Short-circuit Open Short-circuit
1-2P 1-3P Open Short-
circuit
Open Short-
circuit
Open Short-
circuit
Open Short-
circuit
Open Open 92% 59% 84% 75% 84% 50% 75% 67%
Short-
59% 25% 50% 42% 50% 17% 42% 34%
circuit
Short-circuit Open 84% 50% 75% 67% 75% 42% 67% 59%
Short-
75% 42% 67% 59% 67% 34% 59% 50%
circuit
*1. The outdoor units whose SW4-4 is set to ON are designated as No. 1, No. 2, and No. 3 in the order of address from small
to large.
Ex) When outdoor units whose SW4-4 is set to ON are designated as OC, OS1, and OS2, OC=No. 1, OS1=No. 2, and
OS2=No. 3.
HWE10010 GB
- 28 -
Page 38
[ II Restrictions ]
[4] Sample System Connection
Examples of typical system connection are shown on pages [5] to [7].
Refer to the Installation Manual that came with each device or controller for details.
(1) An example of a system to which an MA remote controller is connected
System
configuration
System with one out-
1.
2.
door unit
System with one out-
door unit
Grouping of units in a
3.
system with multiple
outdoor units
System with one out-
4.
5.
door unit
System with one out-
door unit
Connection to the system controller
NO
NO
NO
With connection to transmission line
for centralized control
With connection to indoor-outdoor
transmission line
Address start up for indoor and outdoor units
Automatic
address setup
Manual
address setup
Manual
address setup
Manual
address setup
Manual
address setup
Notes
Connection of
multiple LOSSNAY units
(2) An example of a system to which an ME remote controller is connected
System
configuration
System with one out-
1.
door unit
Connection to the system controller
With connection to transmission line
for centralized control
Address start up for indoor
and outdoor units
Manual
address setup
Notes
(3) An example of a system to which both MA remote controller and ME remote controller are connected
System
configuration
System with one out-
1.
door unit
Connection to the system controller
With connection to transmission
line for centralized control
Address start up for indoor and outdoor units
Manual
address setup
Notes
HWE10010 GB
- 29 -
Page 39
[ II Restrictions ]
[5] An Example of a System to which an MA Remote Controller is connected
1. System with one outdoor unit (automatic address setup for both indoor and outdoor units)
(1) Sample control wiring
Leave the male
connector on
CN41 as it is.
SW2-1 OFF
Leave the male
connector on
CN41 as it is.
SW2-1 OFF
Leave the male
connector on
CN41 as it is.
SW2-1 OFF
OS1 OS2
00
TB7
TB3
M1 M2 M1 M2 M1 M2 M1 M2 M1 M2 M1 M2
S
TB3
TB7
TB3
S
OC
00 00
TB7
L2 L1
Group Group
IC
00
TB5 S TB
S
1 2
L3 L4
IC
00
15
m1
TB5 S TB
15
1 2
Interlock operation with
the ventilation unit
LC
00
TB5
M1 M2 M1 M2 M1 M2
S
L11
m4
A B
MA
(2) Cautions
1) ME remote controller and MA remote controller cannot
both be connected to the same group of indoor units.
2) No more than 2 MA remote controllers can be connected
to a group of indoor units.
3) A transmission booster is required in a system to which
more than 32 indoor units (26 units if one or more indoor
units of the 200 model or above is connected) are connected.
4) Automatic address setup is not available if start-stop input (CN32, CN51, CN41) is used for a group operation of
indoor units. Refer to "[5] 2. Manual address setup for
both indoor and outdoor units".(page 32)
5) To connect more than 2 LOSSNAY units to indoor units
in the same system, refer to "[5] 2. An example of a system with one outdoor unit to which 2 or more LOSSNAY
units are connected".(page 32)
A B
MA
L12 L13
Group Group
IC
A B
RC
IC
A B
MA
00 00
TB5
M1 M2 M1 M2 M1 M2
A B
MA
15
TB
S 1 2
A B
MA
m5
TB5 S TB
15
1 2
A B
MA
m2
m3
(3) Maximum allowable length
1) Indoor/outdoor transmission line
2
Maximum distance (1.25mm
[AWG16] or larger)
L1 +L2+L3+L4 200m[656ft]
L1 +L2+L11+L12+L13 200m[656ft]
2) Transmission line for centralized control
No connection is required.
3) MA remote controller wiring
Maximum overall line length
(0.3 to 1.25mm
2
[AWG22 to 16])
m1 200m [656ft]
m2+m3 200m [656ft]
m4+m5 200m [656ft]
IC
00
TB5 S TB
15
1 2
- 30 -
GBHWE10010
Page 40
[ II Restrictions ]
(4) Wiring method
1) Indoor/outdoor transmission line
Daisy-chain terminals M1 and M2 on the terminal block
for indoor-outdoor transmission line (TB3) on the outdoor
units (OC, OS1, OS2) (Note), and terminals M1 and M2
on the terminal block for indoor-outdoor transmission line
(TB5) on each indoor unit (IC). (Non-polarized two-wire)
Only use shielded cables.
The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2 in the order of capacity from large to small (if two or more units
have the same capacity, in the order of address from
small to large).
Shielded cable connection
Daisy-chain the ground terminal ( ) on the outdoor
units (OC, OS1, OS2), and the S terminal on the terminal
block (TB5) on the indoor unit (IC) with the shield wire of
the shielded cable.
2) Transmission line for centralized control
No connection is required.
3) MA remote controller wiring
Connect terminals 1 and 2 on the terminal block for MA
remote controller line (TB15) on the indoor unit (IC) to the
terminal block on the MA remote controller (MA). (Nonpolarized two-wire)
When 2 remote controllers are connected to the system
When 2 remote controllers are connected to the system,
connect terminals 1 and 2 of the terminal block (TB15) on
the indoor unit (IC) to the terminal block on the two MA
remote controllers.
Set one of the MA remote controllers to sub. (Refer to
(5) Address setting method
MA remote controller function selection or the installation
manual for the MA remote controller for the setting method.)
Group operation of indoor units
To perform a group operation of indoor units (IC), daisychain terminals 1 and 2 on the terminal block (TB15) on
all indoor units (IC) in the same group, and then connect
terminals 1 and 2 on the terminal block (TB15) on the indoor unit on one end to the terminal block on the MA remote controller. (Non-polarized two-wire)
When performing a group operation of indoor units that
have different functions, "Automatic indoor/outdoor address setup" is not available.
4) LOSSNAY connection
Connect terminals M1 and M2 on the terminal block
(TB5) on the indoor unit (IC) to the appropriate terminals
on the terminal block (TB5) on LOSSNAY (LC). (Non-polarized two-wire)
Interlock operation setting with all the indoor units in the
same system will automatically be made. (It is required
that the Lossnay unit be turned on before the outdoor
unit.)
Refer to "[5] 2. Manual address setup for both indoor and
outdoor units" in the following cases: performing an interlock operation of part of the indoor units in the system
with a LOSSNAY unit, using LOSSNAY alone without interlocking it with any units, performing an interlock operation of more than 16 indoor units with a LOSSNAY unit,
or connecting two or more LOSSNAY units to indoor
units in the same system.
5) Switch setting
No address settings required.
Proce-
dures
Unit or controller
1 Indoor unit Main unit IC No settings re-
Sub unit IC
Address setting
range
quired.
Setting
method
Notes
- To perform a group operation of indoor units that
have different functions,
Factory
setting
00
refer to [5] 2.(page 32)
2 LOSSNAY LC No settings re-
-00
quired.
3MA
remote controller
Main
remote controller
Sub
remote controller
MA No settings re-
quired.
MA Sub
remote controller
-Main
Settings to
be made according to
the remote
controller
function selection
4 Outdoor unit (Note) OC
OS1
No settings required.
-00
OS2
The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2.
The outdoor units are designated as OC, OS1, and OS2 in the order of capacity from large to small (if two or more units have
the same capacity, in the order of address from small to large).
HWE10010 GB
31- 31 -
Page 41
[ II Restrictions ]
2. An example of a system with one outdoor unit to which 2 or more LOSSNAY units are connected
(manual address setup for both indoor and outdoor units)
(1) Sample control wiring
Leave the male
connector on
CN41 as it is.
SW2-1 OFF
L1
Leave the male
connector on
CN41 as it is.
SW2-1 OFF
Leave the male
connector on
CN41 as it is.
SW2-1 OFF
53
TB7
TB3
TB7
M1 M2 M1 M2 M1 M2 M1 M2 M1 M2 M1 M2
TB3
S
TB3
S
L2
OC OS1 OS2
IC
01
51 52
TB7
S
TB5 S TB
1 2
M1 M2 M1 M2 M1 M2
L3 L4
Group Group
IC
02
15
TB5 S TB
15
1 2
TB5
Interlock operation with
the ventilation unit
LC
05
S
L11
(2) Cautions
1) ME remote controller and MA remote controller cannot
both be connected to the same group of indoor units.
2) No more than 2 MA remote controllers can be connected
to a group of indoor units.
3) A transmission booster is required in a system to which
more than 32 indoor units (26 units if one or more indoor
units of the 200 model or above is connected) are connected.
A B
MA
L12 L13
Group
IC
A B
MA
IC
04 03
TB
TB5
S
15
1 2
A B
MA
TB5 S TB
15
1 2
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Same as [5] 1.
2) Transmission line for centralized control
No connection is required.
3) MA remote controller wiring
Same as [5] 1.
M1 M2 M1 M2 M1 M2
TB5
LC
06
S
- 32 -
GBHWE10010
Page 42
[ II Restrictions ]
(4) Wiring method
1) Indoor/outdoor transmission line
Same as [5] 1.
Shielded cable connection
Same as [5] 1.
2) Transmission line for centralized control
No connection is required.
3) MA remote controller wiring
Same as [5] 1.
When 2 remote controllers are connected to the system
Same as [5] 1.
Group operation of indoor units
Same as [5] 1.
(5) Address setting method
Proce-
dures
Unit or controller
1 Indoor unit Main
IC 01 to 50 Assign the smallest ad-
Address
setting
unit
Sub unit Assign sequential numbers
range
4) LOSSNAY connection
Connect terminals M1 and M2 on the terminal block
(TB5) on the indoor unit (IC) to the appropriate terminals
on the terminal block (TB5) on LOSSNAY (LC). (Non-polarized two-wire)
Interlock setting between the indoor units and LOSS-
NAY units must be entered on the remote controller. (Refer to "IV [3] Interlock Settings via the MA Remote
Controller" or the installation manual for the MA remote
controller for the setting method.)
5) Switch setting
Address setting is required as follows.
Setting method Notes
To perform a group operadress to the main unit in the
group.
tion of indoor units that
have different functions,
designate the indoor unit
starting with the address of
the main unit in the same
group +1. (Main unit ad-
in the group with the great-
est number of functions as
the main unit.
dress +1, main unit address +2, main unit
address +3, etc.)
Factory
setting
00
2 LOSSNAY LC 01 to 50 Assign an arbitrary but
unique address to each of
these units after assigning
None of these addresses
may overlap any of the in-
door unit addresses.
00
an address to all indoor
units.
3MA
remote controller
Main
remote
control-
MA No
settings required.
-Main
ler
Sub
remote
control-
MA Sub
remote
controller
Settings to be made according to the remote controller function selection
ler
4 Outdoor unit OC
OS1
OS2
51 to 100 Assign sequential address
to the outdoor units in the
same refrigerant circuit.
To set the address to 100,
set the rotary switches to
50.
00
The outdoor units are automatically designated as
OC, OS1, and OS2.(Note)
The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2.
The outdoor units are designated as OC, OS1, and OS2 in the order of capacity from large to small (if two or more units have
the same capacity, in the order of address from small to large).
HWE10010 GB
33- 33 -
Page 43
[ II Restrictions ]
3. Group operation of units in a system with multiple outdoor units
(1) Sample control wiring
L11
Leave the male
connector on
CN41 as it is.
SW2-1 OFF
OS2
53
TB3
M1 M2 M1 M2 M1 M2
TB7
M1 M2 M1 M2 M1 M2
S
Leave the male
connector on
CN41 as it is.
SW2-1 OFF
To be left
unconnected
OS1
52
TB3
TB7
S
To be left
unconnected
Move the male connector
from CN41 to CN40.
SW2-1 OFF
OC
51
TB3
TB7
S
To be connected
Group
IC
01
TB5 S TB
15
1 2
M1 M2 M1 M2 M1 M2 M1 M2
A B
m2
L12
Group
IC
03
TB5 S TB
15
1 2
A B
Interlock operation with
the ventilation unit
Group
IC
06
TB5 S TB
15
1 2
A B
TB5
LC
07
S
L31
Leave the male
connector on
CN41 as it is.
SW2-1 OFF
OS2
56
TB3
M1 M2 M1 M2 M1 M2
TB7
M1 M2 M1 M2 M1 M2
S
To be left
unconnected
L21
Leave the male
connector on
CN41 as it is.
SW2-1 OFF
55
TB3
TB7
OS1
S
Leave the male
connector on
CN41 as it is.
SW2-1 OFF
To be left
unconnected
54
TB3
TB7
OC
S
To be left
unconnected
TB5
M1 M2
(2) Cautions
1) ME remote controller and MA remote controller cannot
both be connected to the same group of indoor units.
2) No more than 2 MA remote controllers can be connected
to a group of indoor units.
3) Do not connect the terminal blocks (TB5) on the indoor
units that are connected to different outdoor units with
each other.
4) Replacement of male power jumper connector (CN41)
must be performed only on one of the outdoor units.
5) Provide grounding to S terminal on the terminal block for
transmission line for centralized control (TB7) on only
one of the outdoor units.
6) A transmission booster is required in a system to which
more than 32 indoor units (26 units if one or more indoor
units of the 200 model or above is connected) are connected.
MA
m3
L22
IC
15
TB
S
1 2
Group
MA
IC
04 02
TB5 S TB
15
1 2 1 2
A B
MA
MA
IC
05
TB5 TB15
S
M1 M2 M1 M2
(3) Maximum allowable length
1) Indoor/outdoor transmission line
2
Maximum distance (1.25mm
[AWG16] or larger)
L11+L12 200m [656ft]
L21+L22 200m [656ft]
2) Transmission line for centralized control
L31+L21 200m [656ft]
3) MA remote controller wiring
Same as [5] 1.
4) Maximum line distance via outdoor unit
(1.25mm
2
[AWG16] or larger)
L12+L31+L22 500m [1640ft]
L11+L31+L21 500m [1640ft]
- 34 -
GBHWE10010
Page 44
[ II Restrictions ]
(4) Wiring method
1) Indoor/outdoor transmission line
Same as [5] 1.
Only use shielded cables.
Shielded cable connection
Same as [5] 1.
2) Transmission line for centralized control
Daisy-chain terminals M1 and M2 on the terminal block
for transmission line for centralized control (TB7) on the
outdoor units (OC) in different refrigerant circuits and on
the OC, OS1, and OS2 in the same refrigerant circuit
If a power supply unit is not connected to the transmission line for centralized control, replace the power jumper connector on the control board from CN41 to CN40 on
only one of the outdoor units.
The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2 in the order of capacity from large to small (if two or more units
have the same capacity, in the order of address from
small to large).
(5) Address setting method
Proce-
dures
Unit or controller
Address setting
range
Only use shielded cables.
Shielded cable connection
Daisy-chain the S terminal on the terminal block (TB7) on
the outdoor units (OC, OS1, OS2) with the shield wire of
the shielded cable. Short-circuit the earth terminal ( )
and the S terminal on the terminal block (TB7) on the outdoor unit whose power jumper connector is mated with
CN40.
3) MA remote controller wiring
Same as [5] 1.
When 2 remote controllers are connected to the system
Same as [5] 1.
Group operation of indoor units
Same as [5] 2.
4) LOSSNAY connection
Same as [5] 2.
5) Switch setting
Address setting is required as follows.
Setting method Notes
Factory
setting
1 Indoor
unit
Main unit IC 01 to 50 Assign the smallest ad-
dress to the main unit in
the group.
Sub unit Assign sequential num-
bers starting with the address of the main unit in
the same group +1. (Main
unit address +1, main unit
address +2, main unit address +3, etc.)
2 LOSSNAY LC 01 to 50 Assign an arbitrary but
unique address to each of
these units after assigning
an address to all indoor
units.
3MA
remote
controller
Main
remote
controller
Sub
remote
controller
4 Outdoor unit OC
MA No
settings required.
MA Sub
remote controller
51 to 100 Assign sequential address
OS1
OS2
-Main
Settings to be made according to the remote controller function selection
to the outdoor units in the
same refrigerant circuit.
The outdoor units are automatically designated as
OC, OS1, and OS2.
(Note)
To perform a group
operation of indoor
units that have different functions, designate the indoor unit in
the group with the
greatest number of
functions as the main
unit.
None of these addresses may overlap
any of the indoor unit
addresses.
To set the address to
100, set the rotary
switches to 50.
00
00
00
The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2.
The outdoor units are designated as OC, OS1, and OS2 in the order of capacity from large to small (if two or more units have
the same capacity, in the order of address from small to large).
HWE10010 GB
35- 35 -
Page 45
[ II Restrictions ]
4. A system in which a system controller is connected to the transmission line for centralized control and which is powered from an outdoor unit
(1) Sample control wiring
Interlock operation with
15
1 2
the ventilation unit
IC
03
TB5 S TB
1 2
LC
07
15
TB5
S
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
OS2
53
TB3
M1 M2 M1 M2 M1 M2
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
OS1
52
TB3
Move the male connector
from CN41 to CN40.
SW2-1 OFF ON
OC
51
TB3
L12 L11
Group Group Group
IC
01
15
TB5 S TB
1 2
M1 M2 M1 M2 M1 M2 M1 M2
IC
02
TB5 S TB
L31
TB7
S
M1 M2 M1 M2 M1 M2
To be left
unconnected
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
OS2
56
TB3
M1 M2 M1 M2 M1 M2
TB7
M1 M2 M1 M2 M1 M2
S
To be left
unconnected
TB7
S
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
OS1
55
TB3
TB7
S
To be left
unconnected
To be left
unconnected
TB7
S
To be connected
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
OC
54
TB3
TB7
S
To be left
unconnected
System controller
A B S
L32
TB5
Note1
A B
MA
L22 L21
IC
05 04
TB
15
S
1 2
A B
MA
TB5 S TB
m2 m1
m3
Note1 When only the LM adapter is connected,
leave SW2-1 to OFF (as it is).
Note2 LM adapters require the power supply
capacity of single-phase AC 208/230V.
A B
MA
IC
15
1 2
Group Group
TB5 S TB
IC
06
15
1 2
A B
MA
A B
MA
LC
08
TB5
M1 M2 M1 M2 M1 M2 M1 M2
S
(2) Cautions
1) ME remote controller and MA remote controller cannot
both be connected to the same group of indoor units.
2) No more than 2 MA remote controllers can be connected
to a group of indoor units.
3) Do not connect the terminal blocks (TB5) on the indoor
units that are connected to different outdoor units with
each other.
4) Replacement of male power jumper connector (CN41)
must be performed only on one of the outdoor units.
5) Short-circuit the shield terminal (S terminal) and the
earth terminal ( ) on the terminal block for transmission
line for centralized control (TB7) on the outdoor unit
whose power jumper connector is mated with CN40.
6) A transmission booster is required in a system to which
more than 32 indoor units (26 units if one or more indoor
units of the 200 model or above is connected) are connected.
7) When a power supply unit is connected to the transmission line for centralized control, leave the power jumper
connector on CN41 as it is (factory setting).
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Same as [5] 3.
2) Transmission line for centralized control
L31+L32(L21) 200m [656ft]
3) MA remote controller wiring
Same as [5] 1.
4) Maximum line distance via outdoor unit
2
(1.25mm
[AWG16] or larger)
L32+L31+L12(L11) 500m [1640ft]
L32+L22(L21) 500m [1640ft]
L12(L11)+L31+L22(L21) 500m[1640ft]
- 36 -
GBHWE10010
Page 46
[ II Restrictions ]
(4) Wiring method
1) Indoor/outdoor transmission line
Same as [5] 1.
Only use shielded cables.
Shielded cable connection
Same as [5] 1.
2) Transmission line for centralized control
Daisy-chain terminals A and B on the system controller,
terminals M1 and M2 on the terminal block for transmission line for centralized control (TB7) on the outdoor
units (OC) in different refrigerant circuits and on the outdoor units (OC, OS1, and OS2) in the same refrigerant
circuit.
If a power supply unit is not connected to the transmission line for centralized control, replace the power jumper connector on the control board from CN41 to CN40 on
only one of the outdoor units.
If a system controller is connected, set the central control
switch (SW2-1) on the control board of all outdoor units
to "ON."
The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2 in the order of capacity from large to small (if two or more units
have the same capacity, in the order of address from
small to large).
Only use shielded cables.
(5) Address setting method
Shielded cable connection
Daisy-chain the S terminal on the terminal block (TB7) on
the outdoor units (OC, OS1, OS2) with the shield wire of
the shielded cable. Short-circuit the earth terminal ( )
and the S terminal on the terminal block (TB7) on the outdoor unit whose power jumper connector is mated with
CN40.
3) MA remote controller wiring
Same as [5] 1.
When 2 remote controllers are connected to the system
Same as [5] 1.
Group operation of indoor units
Same as [5] 1.
4) LOSSNAY connection
Connect terminals M1 and M2 on the terminal block
(TB5) on the indoor unit (IC) to the appropriate terminals
on the terminal block for indoor-outdoor transmission line
(TB5) on LOSSNAY (LC). (Non-polarized 2-core cable)
Indoor units must be interlocked with the LOSSNAY unit
using the system controller. (Refer to the operation manual for the system controller for the setting method.) Interlock setting from the remote controller is required if the
ON/OFF remote controller alone or the LM adapter alone
is connected.
5) Switch setting
Address setting is required as follows.
Proce-
dures
1 Indoor
Unit or controller
Main unit IC 01 to 50 Assign the smallest ad-
unit
Address
setting
range
Setting method Notes
dress to the main unit in
the group.
Sub unit Assign sequential num-
bers starting with the address of the main unit in
the same group +1. (Main
unit address +1, main unit
address +2, main unit address +3, etc.)
2 LOSSNAY LC 01 to 50 Assign an arbitrary but
unique address to each of
these units after assigning an address to all indoor units.
3MA
remote
controller
Main
remote
controller
Sub
remote
controller
MA No
settings required.
MA Sub
remote controller
- Enter the same indoor
Settings to be made according to the remote
controller function selection
4 Outdoor unit OC
OS1
OS2
51 to 100
Assign sequential address
to the outdoor units in the
same refrigerant circuit.
The outdoor units are automatically designated as
OC, OS1, and OS2.(Note)
To perform a group operation of indoor units that
have different functions,
designate the indoor unit
in the group with the
greatest number of functions as the main unit.
None of these addresses
may overlap any of the indoor unit addresses.
unit group settings on the
system controller as the
ones that were entered
on the MA remote controller.
To set the address to
100, set the rotary switches to 50.
Factory
setting
00
00
Main
00
The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2.
The outdoor units are designated as OC, OS1, and OS2 in the order of capacity from large to small (if two or more units have
the same capacity, in the order of address from small to large).
HWE10010 GB
37- 37 -
Page 47
[ II Restrictions ]
IC
TB5 S TB
15
1 2
01
IC
TB5 S TB
15
1 2
02
A B
MA
A B
MA
LC
TB5
S
07
IC
TB5
S
1 2
TB
15
IC
TB5 S TB
15
1 2
05 04
LC
TB5
S
08
IC
TB5 S TB
15
1 2
03
A B
MA
IC
TB5 S TB
15
1 2
06
A B
MA
A B
MA
M1 M2 M1 M2 M1 M2 M1 M2
M1 M2
M1 M2
M1 M2 M1 M2
L12 L11
L22 L21
m3
OC
TB3
TB7
S
51
m2 m1
OS1
TB3
TB7
S
52
OS2
TB3
TB7
M1 M2 M1 M2 M1 M2
M1 M2 M1 M2 M1 M2
S
53
OC
TB3
TB7
S
54
OS1
TB3
TB7
S
55
OS2
TB3
TB7
M1 M2 M1 M2 M1 M2
M1 M2 M1 M2 M1 M2
S
56
L31
A B S
L25
Note1 LM adapters cannot be connected to the
indoor-outdoor transmission line.
Note1
System controller
SW2-1 OFF ON
SW2-1 OFF ON
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
Leave the male
connector on
CN41 as it is.
Move the male connector
from CN41 to CN40.
SW2-1 OFF ON
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
Leave the male
connector on
CN41 as it is.
Group Group Group
Group Group
Interlock operation with
the ventilation unit
To be left
unconnected
To be left
unconnected
To be left
unconnected
To be left
unconnected
To be left
unconnected
To be connected
5. An example of a system in which a system controller is connected to the indoor-outdoor transmission line (except
LM adapter)
(1) Sample control wiring
(2) Cautions
1) ME remote controller and MA remote controller cannot
both be connected to the same group of indoor units.
2) No more than 2 MA remote controllers can be connected
to a group of indoor units.
3) Do not connect the terminal blocks (TB5) on the indoor
units that are connected to different outdoor units with
each other.
4) Replacement of male power jumper connector (CN41)
must be performed only on one of the outdoor units.
5) Provide grounding to S terminal on the terminal block for
transmission line for centralized control (TB7) on only
one of the outdoor units.
6) A maximum of 3 system controllers can be connected to
the indoor-outdoor transmission line, with the exception
that only one G(B)-50A may be connected.
7) When the total number of indoor units exceeds 26, it may
not be possible to connect a system controller on the indoor-outdoor transmission line.
8) In a system to which more than 18 indoor units including
one or more indoor units of 200 model or above are connected, there may be cases in which the system controller cannot be connected to the indoor-outdoor
transmission line.
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Maximum distance (1.25mm
L11+L12 200m [656ft]
L21+L22 200m [656ft]
L25 200m [656ft]
2) Transmission line for centralized control
L31+L21 200m [656ft]
3) MA remote controller wiring
Same as [5] 1.
4) Maximum line distance via outdoor unit
2
(1.25mm
L25+L31+L12(L11) 500m [1640ft]
L12(L11)+L31+L22(L21) 500m [1640ft]
L25+L22(L21) 500m [1640ft]
[AWG16] or larger)
- 38 -
2
[AWG16] or larger)
GBHWE10010
Page 48
[ II Restrictions ]
(4) Wiring method
1) Indoor/outdoor transmission line
Daisy-chain terminals M1 and M2 on the terminal block
for indoor-outdoor transmission line (TB3) on the outdoor
units (OC, OS1, OS2) (Note 1), terminals M1 and M2 on
the terminal block for indoor-outdoor transmission line
(TB5) on each indoor unit (IC), and the S terminal on the
system controller. (Non-polarized two-wire)
Only use shielded cables.
The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2 in the order of capacity from large to small (if two or more units
have the same capacity, in the order of address from
small to large).
Shielded cable connection
Daisy-chain the ground terminal ( ) on the outdoor
units (OC, OS1, OS2), the S terminal on the terminal
block (TB5) on the indoor unit (IC), and the S terminal on
the system controller with the shield wire of the shielded
cable.
2) Transmission line for centralized control
Daisy-chain terminals M1 and M2 on the terminal block
for transmission line for centralized control (TB7) on the
outdoor units (OC) in different refrigerant circuits and on
the OC, OS1, and OS2 in the same refrigerant circuit.
If a power supply unit is not connected to the transmission line for centralized control, replace the power jumper connector on the control board from CN41 to CN40 on
only one of the outdoor units.
(5) Address setting method
Set the central control switch (SW2-1) on the control
board of all outdoor units to "ON."
Only use shielded cables.
Shielded cable connection
Daisy-chain the S terminal on the terminal block (TB7) on
the outdoor units (OC, OS1, OS2) with the shield wire of
the shielded cable. Short-circuit the earth terminal ( )
and the S terminal on the terminal block (TB7) on the outdoor unit whose power jumper connector is mated with
CN40.
3) MA remote controller wiring
Same as [5] 1.
When 2 remote controllers are connected to the system
Same as [5] 1.
Group operation of indoor units
Same as [5] 1.
4) LOSSNAY connection
Connect terminals M1 and M2 on the terminal block
(TB5) on the indoor units (IC) to the appropriate terminals on the terminal block for indoor-outdoor transmission line (TB5) on LOSSNAY (LC). (Non-polarized twowire)
Indoor units must be interlocked with the LOSSNAY unit
using the system controller. (Refer to the operation manual for the system controller for the setting method.) Interlock setting from the remote controller is required if the
ON/OFF remote controller alone is connected.
5) Switch setting
Address setting is required as follows.
Proce-
dures
1 Indoor
Unit or controller
Main unit IC 01 to 50 Assign the smallest address
unit
Address set-
ting range
Setting method Notes
to the main unit in the group.
Sub unit Assign sequential numbers
starting with the address of
the main unit in the same
group +1. (Main unit address
+1, main unit address +2,
main unit address +3, etc.)
2 LOSSNAY LC 01 to 50 Assign an arbitrary but
unique address to each of
these units after assigning an
address to all indoor units.
3MA
remote
controller
4 Outdoor unit OC
Main
remote
controller
Sub
remote
controller
MA No
settings required.
MA Sub
remote controller
Settings to be made according to the remote controller
function selection
51 to 100 Assign sequential address to
OS1
OS2
the outdoor units in the same
refrigerant circuit.
- Enter the same indoor unit
The outdoor units are automatically designated as OC,
OS1, and OS2. (Note)
To perform a group operation of indoor units that have
different functions, designate the indoor unit in the
group with the greatest
number of functions as the
main unit.
None of these addresses
may overlap any of the indoor unit addresses.
group settings on the system controller as the ones
that were entered on the MA
remote controller.
To set the address to 100,
set the rotary switches to 50.
Factory
setting
00
00
Main
00
The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2.
The outdoor units are designated as OC, OS1, and OS2 in the order of capacity from large to small (if two or more units have
the same capacity, in the order of address from small to large).
HWE10010 GB
39- 39 -
Page 49
[ II Restrictions ]
IC
TB5 S TB
15
1 2
01
IC
TB5 S TB
15
1 2
02
LC
TB5
S
07
IC
TB5
S
1 2
TB
15
IC
TB5 S TB
15
1 2
05 04
LC
TB5
S
08
IC
TB5 S TB
15
1 2
03
IC
TB5 S TB
15
1 2
06
A B
RC
101
A B
RC
102
A B
RC
103
Group
Group
Group Group Group
M1 M2 M1 M2 M1 M2 M1 M2
M1 M2 M1 M2 M1 M2 M1 M2
L12 L11
L22 L21
L31
A B S
L32
Note1
System controller
Interlock operation with
the ventilation unit
OC
TB3
TB7
S
51
m1
OS1
TB3
TB7
S
52
OS2
TB3
TB7
M1 M2 M1 M2 M1 M2
M1 M2 M1 M2 M1 M2
S
53
OC
TB3
TB7
S
54
OS1
TB3
TB7
S
55
OS2
TB3
TB7
M1 M2 M1 M2 M1 M2
M1 M2 M1 M2 M1 M2
S
56
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
SW2-1 OFF ON
Move the male connector
from CN41 to CN40.
To be connected
To be left
unconnected
To be left
unconnected
To be left
unconnected
To be left
unconnected
To be left
unconnected
104
A B
RC
154
A B
RC
m3
106
A B
RC
m2
Note1 When only the LM adapter is connected,
leave SW2-1 to OFF (as it is).
Note2 LM adapters require the power supply
capacity of single-phase AC 208/230V.
[6] An Example of a System to which an ME Remote Controller is connected
(1) Sample control wiring
(2) Cautions
1) ME remote controller and MA remote controller cannot
both be connected to the same group of indoor units.
2) No more than 3 ME remote controllers can be connected
to a group of indoor units.
3) Do not connect the terminal blocks (TB5) on the indoor
units that are connected to different outdoor units with
each other.
4) Replace the power jumper connector of the control board
from CN41 to CN40 on only one of the outdoor units.
5) Provide an electrical path to ground for the S terminal on
the terminal block for centralized control on only one of
the outdoor units.
6) A transmission booster must be connected to a system
in which the total number of connected indoor units exceeds 20.
7) A transmission booster is required in a system to which
more than 16 indoor including one or more indoor units
of the 200 model or above are connected.
8) When a power supply unit is connected to the transmission line for centralized control, leave the power jumper
connector on CN41 as it is (factory setting).
(3) Maximum allowable length
1) Indoor/outdoor transmission line
2) Transmission line for centralized control
Same as [5] 3.
Same as [5] 4.
3) ME remote controller wiring
Maximum overall line length
(0.3 to 1.25mm
2
[AWG22 to 16])
m1 10m [32ft]
m2+m3 10m [32ft]
If the standard-supplied cable must be extended, use a
cable with a diameter of 1.25mm
of the cable that exceeds 10m [32ft] must be included in
the maximum indoor-outdoor transmission line distance
described in (1).
When connected to the terminal block on the Simple remote controller, use cables that meet the following cable
size specifications: 0.75 - 1.25 mm
4) Maximum line distance via outdoor unit
2
or larger)
(1.25mm
Same as [5] 4.
2
[AWG16]. The section
2
[AWG18-14].
- 40 -
GBHWE10010
Page 50
[ II Restrictions ]
(4) Wiring method
1) Indoor/outdoor transmission line
Same as [5] 1.
Shielded cable connection
Same as [5] 1.
2) Transmission line for centralized control
Same as [5] 4.
Shielded cable connection
Same as [5] 4.
3) ME remote controller wiring
ME remote controller is connectable anywhere on the in-
door-outdoor transmission line.
(5) Address setting method
Proce-
dures
1 Indoor
Unit or controller
Main unit IC 01 to 50 Assign the smallest ad-
Address setting
unit
Sub unit Assign sequential num-
2 LOSSNAY LC 01 to 50 Assign an arbitrary but
3ME re-
mote
controller
Main
remote
controller
Sub
RC 101 to 150 Add 100 to the main unit
RC 151 to 200 Add 150 to the main unit
remote
controller
range
When 2 remote controllers are connected to the system
Refer to the section on Switch Setting.
Performing a group operation (including the group
operation of units in different refrigerant circuits).
Refer to the section on Switch Setting.
4) LOSSNAY connection
Same as [5] 4.
5) Switch setting
Address setting is required as follows.
Setting method Notes
To perform a group
dress to the main unit in
the group.
operation of indoor
units that have differ-
ent functions, desig-
bers starting with the address of the main unit in
the same group +1.
(Main unit address +1,
main unit address +2,
nate the indoor unit in
the group with the
greatest number of
functions as the main
unit.
main unit address +3,
etc.)
None of these adunique address to each
of these units after assigning an address to all
dresses may overlap
any of the indoor unit
addresses.
indoor units.
It is not necessary to
address in the group
set the 100s digit.
To set the address
to 200, set the rota-
address in the group
ry switches to 00.
Factory
setting
00
00
101
4 Outdoor unit OC
51 to 100 Assign sequential adOS1
OS2
dress to the outdoor
units in the same refrig-
To set the address to
100, set the rotary
switches to 50.
00
erant circuit. The outdoor units are
automatically designated as OC, OS1, and
OS2. (Note)
The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2.
The outdoor units are designated as OC, OS1, and OS2 in the order of capacity from large to small (if two or more units have
the same capacity, in the order of address from small to large).
HWE10010 GB
41- 41 -
Page 51
[ II Restrictions ]
[7] An Example of a System to which both MA Remote Controller and ME Remote Controller are connected
(1) Sample control wiring
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
TB3
M1 M2 M1 M2 M1 M2
L11 L12
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
TB3
Move the male connector
from CN41 to CN40.
SW2-1 OFF ON
OC OS1 OS2
51 52 53
TB3
Group
IC
01
TB5 TB
M1 M2
S
15
1 2
02
TB5 TB
M1 M2
S
Group
IC
IC
06
15
1 2
TB5 TB
M1 M2
15
1 2
S
L31
TB7
M1 M2 M1 M2 M1 M2
S
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
OS2
56
TB3
M1 M2 M1 M2 M1 M2
TB7
S
M1 M2 M1 M2 M1 M2
TB7
To be left
unconnected
To be left
unconnected
S
To be left
unconnected
L21 L22
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
OS1
55
TB3
TB7
S
To be left
unconnected
TB7
To be connected
Leave the male
connector on
CN41 as it is.
SW2-1 OFF ON
OC
54
TB3
TB7
S
S
To be left
unconnected
L32
System controller
A B S
Note1
TB5
M1 M2
A B
A B
106
MA
IC
Group Group
IC
04 03
TB5 TB
TB
15
S
1 2
A B
MA
Note1 When only the LM adapter is connected,
leave SW2-1 to OFF (as it is).
Note2 LM adapters require the power supply
capacity of single-phase AC 208/230V.
M1 M2
A B
104
RC
15
S
1 2
TB5 TB
M1 M2
S
IC
05
RC
15
1 2
(2) Cautions
1) Be sure to connect a system controller.
2) ME remote controller and MA remote controller cannot
both be connected to the same group of indoor units.
3) Assign to the indoor units connected to the MA remote
controller addresses that are smaller than those of the indoor units that are connected to the ME remote controller.
4) No more than 2 ME remote controllers can be connected
to a group of indoor units.
5) No more than 2 MA remote controllers can be connected
to a group of indoor units.
6) Do not connect the terminal blocks (TB5) on the indoor
units that are connected to different outdoor units with
each other.
7) Replace the power jumper connector of the control board
from CN41 to CN40 on only one of the outdoor units.
8) Provide an electrical path to ground for the S terminal on
the terminal block for centralized control on only one of
the outdoor units.
9) A transmission booster must be connected to a system
in which the total number of connected indoor units exceeds 20.
10) A transmission booster is required in a system to which
more than 16 indoor including one or more indoor units
of the 200 model or above are connected.
11) When a power supply unit is connected to the transmission line for centralized control, leave the power jumper
connector on CN41 as it is (factory setting).
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Same as [5] 3.
2) Transmission line for centralized control
Same as [5] 4.
3) MA remote controller wiring
Same as [5] 1.
4) ME remote controller wiring
Same as [5] 1.
5) Maximum line distance via outdoor unit
(1.25mm
2
or larger)
Same as [5] 4.
- 42 -
GBHWE10010
Page 52
[ II Restrictions ]
(4) Wiring method
1) Indoor/outdoor transmission line
Same as [5] 1.
Shielded cable connection
Same as [5] 1.
2) Transmission line for centralized control
Same as [5] 4.
Shielded cable connection
Same as [5] 4.
3) MA remote controller wiring
Same as [5] 1.
When 2 remote controllers are connected to the system
(5) Address setting method
Proce-
dures
1Opera-
tion
with the
MA re-
Unit or controller
In-
Main unit IC 01 to 50
door
unit
Sub unit
mote
controller
MA
remote
controller
Main re-
mote con-
troller
Sub
remote
MA No
MA Sub
controller
2Opera-
tion
with the
Indoor
unit
ME remote
Main unit IC 01 to 50 Assign the smallest ad-
Sub unit
controller
ME remote
controller
Main re-
mote con-
troller
Sub
remote
controller
RC 101 to
RC 151 to
3 LOSSNAY LC 01 to 50
4 Outdoor unit OC
OS1
OS2
Address
setting
range
settings
required.
remote
controller
150
200
51 to 100
Same as [5] 1.
Group operation of indoor units
Same as [5] 1.
4) ME remote controller wiring
Same as [6]
When 2 remote controllers are connected to the system
Same as [6]
Group operation of indoor units
Same as [6]
5) LOSSNAY connection
Same as [5] 4.
6) Switch setting
Address setting is required as follows.
Setting method Notes
Assign the smallest address
to the main unit in the group.
Assign sequential numbers starting with the address of the main unit in
the same group +1. (Main
unit address +1, main unit
address +2, main unit address +3, etc.)
-
Settings to be made according to the remote controller function selection
dress to the main unit in
the group.
Assign sequential numbers starting with the address of the main unit in
the same group +1. (Main
unit address +1, main unit
address +2, main unit address +3, etc.)
Add 100 to the main unit
address in the group.
Add 150 to the main unit
Assign an address smaller than
that of the indoor unit that is connected to the ME remote controller.
Enter the same indoor unit group
settings on the system controller
as the ones that were entered
on the MA remote controller.
To perform a group operation of
indoor units that have different
functions, designate the indoor
unit in the group with the greatest number of functions as the
main unit.
Enter the indoor unit group set-
tings on the system controller
(MELANS).
Assign an address larger than
those of the indoor units that
are connected to the MA remote controller.
To perform a group operation
of indoor units that have different functions, designate the
indoor unit in the group with
the greatest number of functions as the main unit.
It is not necessary to set
the 100s digit.
To set the address to 200,
set the rotary switches to
00.
address in the group.
Assign an arbitrary but
unique address to each of
these units after assigning an address to all indoor units.
Assign sequential address to the outdoor units
in the same refrigerantcircuit. The outdoor units
are automatically designated as OC, OS1, and
OS2.(Note)
None of these addresses
may overlap any of the indoor unit addresses.
To set the address to 100,
set the rotary switches to 50.
Factory
setting
00
Main
00
101
00
00
The outdoor units in the same refrigerant circuit are automatically designated as OC, OS1, and OS2.
The outdoor units are designated as OC, OS1, and OS2 in the order of capacity from large to small (if two or more units have
the same capacity, in the order of address from small to large).
HWE10010 GB
43- 43 -
Page 53
[ II Restrictions ]
WARNING
WARNING
CAUTION
[8] Restrictions on Pipe Length
1. Determining the reusability of the existing piping
Mitsubishi Electric Corporation cannot be held responsibility for the problems arising from the use of the existing pipes. Before
installing the new air conditioning system, the existing piping system must be checked for refrigerant gas leaks, strength (material/thickness), and for corrosion.
Major points to consider when evaluating the reusability of the existing piping
(1) Replacing City Multi units with Replace Multi units
The existing piping system can be reused unless there have been problems with the system.
(Make sure that the system has not experienced frequent malfunctions due to refrigerant gas leaks or required additional refrigerant charge frequently.)
1) Replacing the existing units with Replace Multi units with the same capacityThe existing pipes can be used as they are.
2) Replacing the existing units with Replace Multi units with different capacityMake sure that the existing piping system meet
the piping size, piping length, and maximum vertical separation requirements for the Replace Multi system.
(2) Replacing units other than City Multi units with Replace Multi units
1) Make sure that the existing packaged air conditioning system is operating normally.
(Make sure that the system has not experienced frequent malfunctions due to refrigerant gas leaks or required additional refrigerant charge frequently.)
2) Find out the type of the refrigerant oil used in the existing system.
Suniso, MS, HAB, Barrel Freeze, and Freol are acceptable. If other types of refrigerant oil is used, check on the compatibility.
3) T-shaped, Y-shaped, and header branch pipes can be reused.
Branch pipes that are subject to pressure loss (e.g., Mr. SLIM multi distributor) cannot be used in the Replace Multi system.
They should be replaced with new branch pipes.
Using the manufacturer name, model name, and the number of units connected to estimate the branching types and pipe
sizes.
4) Make sure that the existing piping system meet the piping size, piping length, and maximum vertical separation requirements
for the Replace Multi system.
Criteria for determining the reusability of the existing piping
Item Evaluation criteria Other evaluation materials
Pipe size/length Refer to "Restrictions on Pipe Length" and "Refrigerant pipe
Refrigerant oil
type
Air tightness
Branch pipe
type
Insulation Insulation and caulking are not coming off. N/A
Piping system The vertical separation requirement is met. N/A
Radial thickness
of the refrigerant
pipe
Do not let refrigerant (R410A) leak in the presence of an open flame or other heat source. If refrigerant comes in
contact with an open flame, it will break down and produce toxic gases. Do not weld in a confined space. Perform a
leak test upon completion of refrigerant pipe installation.
size" in the following pages.
Suniso, MS, HAB, Barrel Freeze, and Freol Manufacturer, model type/name,
Pressurize the system to REPLACE MULTI Y(PUHY-RP): 3.3
MPa [479 psi]; REPLACE MULTI R2 (PURY-RP): 3.6 MPa [523
psi], and leave it for a day to check for pressure loss.
T-shaped, Y-shaped, and header branch pipes Manufacturer, model type/name,
The figures in the radial thickness column are based on the
Japanese standards and provided only as a reference. Use
pipes that meet the local standards.
N/A
and manufacturing year
Units in the existing system are operating normally.
and manufacturing year
When installing or relocating the unit, check that no substance other than the specified refrigerant (R410A) is present
in the refrigerant circuit.
Presence of foreign substance or air can cause abnormal pressure rise or explosion.
Use refrigerant piping made of phosphorus deoxidized copper. Keep the inner and outer surfaces of the pipes clean
and free of such contaminants as sulfur, oxides, dust, dirt, shaving particles, oil, and moisture.
Contaminants in the refrigerant piping may cause the refrigerant oil to deteriorate.
HWE10010 GB
- 44 -
Page 54
[ II Restrictions ]
CAUTION
CAUTION
CAUTION
Charge refrigerant in the liquid state.
If gaseous refrigerant is drawn out of the cylinder first, the composition of the refrigerant in the cylinder will change
and become unsuitable for use. It will also lead to performance loss.
Store the piping materials indoors, and keep both ends of the pipes sealed until immediately before brazing.
(Keep elbows and other joints in plastic bags.)
Infiltration of dust, dirt, or water into the refrigerant system may cause the refrigerant oil to deteriorate or damage the
compressor.
Do not use a charging cylinder.
The use of a charging cylinder will change the composition of the refrigerant in the cylinder. It will also lead to per-
formance loss.
HWE10010 GB
- 45 -
Page 55
[ II Restrictions ]
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
NO
NO
NO
Does the piping diameter
and piping length match
our guideline?
Please change to the specified
branch pipe.
Check the branch pipe type
and the reusability standards
to make a decision.
Is the branch pipe shape T, Y
or header branching?
Do the existing
pipes hold enough
air tightness?
All branch pipes are connected
with the indoor units.
Is the piping correctly covered
with heat insulation material?
Does the piping meet the
strength requirements?
(material,thickness,anti
corrosion)
Conduct heat insulation.
Please have air tight test on site.
The existing piping can be reused.
Use a new piping.
Did the existing unit before the
replacement operate without
any gas leak?
Cut the branch pipe completely that are not
in use, and seal it.
Is the piping air tight?
Start
YES
YES
YES
NO
NO
NO
NO
YES
YES
YES
NO
NO
Please contact your local
distributor.
Are the existing pipes still
connected with indoor units and the
outdoor units? (excluding sealed
branch pipes that are
not in use)
Exisiting piping cannot be
reused. Use new piping.
If the piping is left disconnected, there is a
possibility of contamination and corrosion
inside the pipe. Do not reuse such pipes.
Is the existing unit
Mitsubishi Electric unit?
Is the capacity of new
replacement unit the same as that
of the existing unit?
Check the piping size and length.
Is the refrigerant oil SUNISO, MS,
Barrel Freeze, HAB or Freol?
The vertical height
difference needs to be 50m or
less between IU and OU (if OU is
below IU, 40m or less). And also, height
difference between each IU is
15m or less.
Take the refrigerant oil recovery
procedures described in the Mineral
Oil Collection (Refrigerant Oil
Recovery) Manual.
Do you know what kind of
refrigerant oil is used in the
existing system?
Determining the reusability of the existing piping
HWE10010 GB
- 46 -
Page 56
[ II Restrictions ]
2. Restrictions on pipe length
(1) End branching
RP200, RP250, RP300, RP350 models
Outdoor unit
A
Piping
length
Height
difference
Branch header
d
Indoor Indoor Indoor
4
e
5
f
6
cap
h
First branch
(Branch joint)
(Outdoor unit below indoor unit)
(Outdoor unit above indoor unit)
H
H’
Branch joint
B
1
D
L
C
a
Indoor Indoor Indoor
b
2
c
3
Unit: m [ft]
Operation Pipe sections Allowable length of pipes
Total pipe length A+B+C+D
300 [984] or less (Note 1)
+a+b+c+d+e+f
Total pipe length (L) from the outdoor unit to the
farthest indoor unit
Total pipe length from the first branch to the farthest indoor unit ( )
Between indoor and
outdoor units
Outdoor unit above indoor unit
Outdoor unit below in-
A+B+C+c or
A+D+f
B+C+c or
D+f
H 50 [164] or less
H' 40 [131] or less
120 [393] or less
(Equivalent length 150 [492]
or less)
40 [131] or less (Note 2)
door unit
Between indoor units h 15 [49] or less
1) Maximum allowable piping length depends on the total amount of refrigerant in a given system. Use the formulas below to
calculate the maximum length.
PUHY-RP200 - RP250YJM: 0.29 × L
PUHY-RP300 - RP350YJM: 0.29 × L
PUHY-RP200 - RP250YJM: 3.12× L
PUHY-RP300 - RP350YJM: 3.12× L
L
: Length of ø19.05 liquid pipe (m)
1
: Length of ø15.88 liquid pipe (m)
L
2
L
: Length of ø12.7 liquid pipe (m)
3
L
: Length of ø9.52 liquid pipe (m)
4
: Length of ø6.35 liquid pipe (m)
L
5
+ 0.2 × L2 + 0.12 × L3 + 0.06 × L4 + 0.024 × L5 < 18 (kg)
1
+ 0.2 × L2 + 0.12 × L3 + 0.06 × L4 + 0.024 × L5 < 25 (kg)
1
' + 2.15 × L2' + 1.29 × L3' + 0.65 × L4' + 0.26 × L5' < 40 [oz]
1
' + 2.15 × L2' + 1.29 × L3' + 0.65 × L4' + 0.26 × L5' < 56 [oz]
1
' : Length of ø19.05 [3/4"] liquid pipe [ft]
L
1
' : Length of ø15.88 [5/8"] liquid pipe [ft]
L
2
L
' : Length of ø12.7 [1/2"] liquid pipe [ft]
3
L
' : Length of ø9.52 [3/8"] liquid pipe [ft]
4
' : Length of ø6.35 [1/4"] liquid pipe[ft]
L
5
2) When merging two refrigerant piping systems into one, make sure the length difference between the two systems is 40 m [131
ft] or less.
HWE10010 GB
- 47 -
Page 57
[ II Restrictions ]
RP400, RP450, RP500, RP550 models
Outdoor unit
Outdoor unit
H2
E
F
First liquid refrigerant distributor
First gas refrigerant distributor
First branch
(Branch joint)
(Note1) Install the pipe that connects the branch pipe and the outdoor units in
A
the way that it has a downward inclination toward the branch pipe.
Downward inclination
Upward inclination
D
L
B
To indoor unit
To indoor unit
If the piping length between the branch pipe and the
outdoor unit exceeds 2 m [6 ft] , provide a trap on the
piping (gas piping only) within 2 m [6 ft] of the branch
pipe to prevent the refrigerant oil from accumulating in
the piping and causing compressor damage.
Minimum trap height: 200 mm [7 inches]
To indoor unit
To indoor unit
cap
Branch header
2m [6 ft]
Trap
(gas pipe
only)
2m [6 ft] Max.
Branch joint
H1(Outdoor unit above indoor unit)
H1'(Outdoor unit below indoor unit)
Indoor
unit side
Piping
length
Outdoor
unit side
Height
difference
C
a
Indoor Indoor Indoor
1
b
2
d
Indoor Indoor Indoor
c
3
4
e
5
f
6
h
Unit: m [ft]
Operation Pipe sections Allowable length of pipes
Total pipe length A+B+C+D+E+F+a+b+c+d+e+f 300 [984] or less (Note 1)
Total pipe length (L) from the
outdoor unit to the farthest indoor
unit
Total pipe length from the first
branch to the farthest indoor unit
()
E(F)+A+B+C+c
or E(F)+A+D+f
B+C+c
or D+f
120 [393] or less
(Equivalent length 150 [492]or
less)
40 [131] or less (Note 2)
10 [32] or less
Between outdoor units E+F
(Equivalent length 12 [39] or
less)
Between indoor
and outdoor units
Outdoor unit
above indoor
unit
Outdoor unit
below in-
H1
H1'
50 [164] or less
40 [131] or less
door unit
Between indoor units h 15 [49] or less
Between outdoor units H2 0.1 [0.3] or less
1) Maximum allowable piping length depends on the total amount of refrigerant in a given system. Use the formulas below to
calculate the maximum length.
PUHY-RP400 - RP550YSJM: 0.29 × L
PUHY-RP400 - RP550YSJM: 3.12× L
L1 : Length of ø19.05 liquid pipe (m)
L
: Length of ø15.88 liquid pipe (m)
2
: Length of ø12.7 liquid pipe (m)
L
3
L
: Length of ø9.52 liquid pipe (m)
4
L
: Length of ø6.35 liquid pipe (m)
5
+ 0.2 × L2 + 0.12 × L3 + 0.06 × L4 + 0.024 × L5 < 25 (kg)
1
' + 2.15 × L2' + 1.29 × L3' + 0.65 × L4' + 0.26 × L5' < 56 [oz]
1
L
' : Length of ø19.05 [3/4"] liquid pipe [ft]
1
L
' : Length of ø15.88 [5/8"] liquid pipe [ft]
2
' : Length of ø12.7 [1/2"] liquid pipe [ft]
L
3
L
' : Length of ø9.52 [3/8"] liquid pipe [ft]
4
L
' : Length of ø6.35 [1/4"] liquid pipe[ft]
5
2) When merging two refrigerant piping systems into one, make sure the length difference between the two systems is 40 m [131
ft] or less.
HWE10010 GB
- 48 -
Page 58
[ II Restrictions ]
RP600, RP650 models
Outdoor unit
H2
First liquid refrigerant distributor
First gas refrigerant distributor
Outdoor unit
E
F
If the piping length between the branch pipe and the
outdoor unit exceeds 2 m [6 ft] , provide a trap on the
piping (gas piping only) within 2 m [6 ft] of the branch
(Note1)
Install the pipe that connects the branch pipe and the outdoor units in
the way that it has a downward inclination toward the branch pipe.
Downward inclination
A
To indoor unit
pipe to prevent the refrigerant oil from accumulating in
the piping and causing compressor damage.
Minimum trap height: 200 mm [7 inches]
2m [6 ft]
Trap
(gas pipe
only)
To indoor unit
First branch
(Branch joint)
H1(Outdoor unit above indoor unit)
H1'(Outdoor unit below indoor unit)
Branch joint
Indoor
unit side
Piping
length
Outdoor
unit side
IndoorIndoorIndoor
c
To indoor unit
d
4
Branch header
e
5
Upward inclination
D
L
B
C
a
1
b
2
3
2m [6 ft] Max.
cap
f
IndoorIndoorIndoor
6
h
To indoor unit
Unit: m [ft]
Operation Pipe sections Allowable length of pipes
Total pipe length A+B+C+D+E+F+a+b+c+d+e+f 250 [820] or less (Note 1)
Total pipe length (L) from the outdoor unit to the farthest indoor unit
Total pipe length from the first
branch to the farthest indoor unit
()
E(F)+A+B+C+c
or E(F)+A+D+f
B+C+c
or D+f
100 [328] or less
(Equivalent length 120 [410]or
less)
40 [131] or less (Note 2)
10 [32] or less
Between outdoor units E+F
(Equivalent length 12 [39] or
less)
Height
difference
Between indoor
and outdoor units
Outdoor unit
above indoor
unit
Outdoor unit
below indoor
unit
H1
H1'
50 [164] or less
40 [131] or less
Between indoor units h 15 [49] or less
Between outdoor units H2 0.1 [0.3] or less
1) Maximum allowable piping length depends on the total amount of refrigerant in a given system. Use the formulas below to
calculate the maximum length.
PUHY-RP600 - RP650YSJM: 0.39 × L
PUHY-RP600 - RP650YSJM: 4.20× L
L0 : Length of ø22.2 liquid pipe (m)
: Length of ø19.05 liquid pipe (m)
L
1
L
: Length of ø15.88 liquid pipe (m)
2
L
: Length of ø12.7 liquid pipe (m)
3
: Length of ø9.52 liquid pipe (m)
L
4
L
: Length of ø6.35 liquid pipe (m)
5
+ 0.29 × L1 + 0.2 × L2 + 0.12 × L3 + 0.06 × L4 + 0.024 × L5 < 25 (kg)
0
' + 3.12× L1' + 2.15 × L2' + 1.29 × L3' + 0.65 × L4' + 0.26 × L5' < 56 [oz]
0
' : Length of ø22.2 [7/8"] liquid pipe [ft]
L
0
' : Length of ø19.05 [3/4"] liquid pipe [ft]
L
1
L
' : Length of ø15.88 [5/8"] liquid pipe [ft]
2
L
' : Length of ø12.7 [1/2"] liquid pipe [ft]
3
' : Length of ø9.52 [3/8"] liquid pipe [ft]
L
4
L
' : Length of ø6.35 [1/4"] liquid pipe[ft]
5
2) When merging two refrigerant piping systems into one, make sure the length difference between the two systems is 40 m [131
ft] or less.
HWE10010 GB
- 49 -
Page 59
[ II Restrictions ]
L
H2
B
e
h
f
6
1
a
c
b
3
2
5
A
D
C
d
4
E F I
G
Indoor Indoor Indoor
IndoorIndoorIndoor
Outdoor unitOutdoor unit
Outdoor unit
First liquid refrigerant distributor
First gas refrigerant distributor
H1
(Outdoor unit above indoor unit)
H1'
(Outdoor unit below indoor unit)
Second gas refrigerant distributor
Second liquid refrigerant distributor
(Note1) Install the pipe that connects the branch pipe and the outdoor units in
the way that it has a downward inclination toward the branch pipe.
If the piping length between the branch pipe and the
outdoor unit exceeds 2 m [6 ft] , provide a trap on the
piping (gas piping only) within 2 m [6 ft] of the branch
pipe to prevent the refrigerant oil from accumulating in
the piping and causing compressor damage.
Minimum trap height: 200 mm [7 inches]
To indoor unit
To indoor unit
2m [6 ft]
2m [6 ft] Max.
Trap
(gas pipe
only)
Branch header
cap
First branch
(Branch joint)
Downward inclination
Upward inclination
To indoor unit
To indoor unit
Branch joint
RP700, RP750, RP800, RP850, RP900 models
Piping
length
Height
difference
1) Maximum allowable piping length depends on the total amount of refrigerant in a given system. Use the formulas below to
calculate the maximum length.
PUHY-RP700 - RP900YSJM: 0.39 × L
PUHY-RP700 - RP900YSJM: 4.20 × L
L
: Length of ø22.2 liquid pipe (m)
0
L
: Length of ø19.05 liquid pipe (m)
1
L
: Length of ø15.88 liquid pipe (m)
2
L
: Length of ø12.7 liquid pipe (m)
3
: Length of ø9.52 liquid pipe (m)
L
4
L
: Length of ø6.35 liquid pipe (m)
5
2) When merging two refrigerant piping systems into one, make sure the length difference between the two systems is 40 m [131
ft] or less.
HWE10010 GB
Indoor
unit side
Outdoor
unit side
Operation Pipe sections Allowable length of pipes
Total pipe length
Total pipe length (L) from the outdoor
unit to the farthest indoor unit
Total pipe length from the first branch
to the farthest indoor unit ( )
A+B+C+D+E+F+G+I+a+b
+c+d+e+f
E(F)+G+A+B+C+c
or E(F)+G+A+D+f
B+C+c
or D+f
250 [820] or less (Note 1)
100 [328] or less
(Equivalent length 125 [410]or
less)
40 [131] or less (Note 2)
10 [32] or less
Between outdoor units E+F+G+I
Between indoor
and outdoor units
Outdoor unit
above indoor unit
Outdoor unit below indoor unit
Between indoor units h 15 [49] or less
Between outdoor units H2 0.1 [0.3] or less
+ 0.29 × L1 + 0.2 × L2 + 0.12 × L3 + 0.06 × L4 + 0.024 × L5 < 25 (kg)
0
' + 3.12 × L1' + 2.15 × L2' + 1.29 × L3' + 0.65 × L4' + 0.26 × L5' < 56 [oz]
0
L
L
L
L
L
L
H1
H1'
' : Length of ø22.2 [7/8"] liquid pipe [ft]
0
' : Length of ø19.05 [3/4"] liquid pipe [ft]
1
' : Length of ø15.88 [5/8"] liquid pipe [ft]
2
' : Length of ø12.7 [1/2"] liquid pipe [ft]
3
' : Length of ø9.52 [3/8"] liquid pipe [ft]
4
' : Length of ø6.35 [1/4"] liquid pipe[ft]
5
- 50 -
(Equivalent length 12 [39] or
less)
50 [164] or less
40 [131] or less
Unit: m [ft]
Page 60
[ II Restrictions ]
h
12 12
34
34
A
a b
c d
B C
L
Piping in a non-REPLACE MULTI system Piping in a REPLACE MULTI system
H (Outdoor unit above indoor unit)
H '(Outdoor unit below indoor unit)
Indoor Indoor
Indoor Indoor
Indoor Indoor
Indoor Indoor
First branch
(Branch joint)
Outdoor unit
(2) Using a branch joint to merge the existing piping systems
Operation Pipe sections Allowable length of pipes
Total pipe length A+B+C+a+b+c+d 300 [984] or less (Note 1)
Total pipe length (L) from the outdoor unit
Piping length
to the farthest indoor unit
Total pipe length from the first branch to
the farthest indoor unit ( )
Outdoor unit
Height
Between indoor and
outdoor units
difference
above indoor unit
Outdoor unit below indoor unit
A+C+d
or
A+B+b
B+b
or
C+d
H
H'
Between indoor units h 15 [49] or less
1) The maximum allowable piping length for the RP650 through RP900 models is 250 m [820 ft].
Observe the piping length limitation imposed by the refrigerant amount as calculated with the formula below.
PUHY-RP200 - RP250YJM: 0.39 × L0 + 0.29 × L1 + 0.2 × L2 + 0.12 × L3 + 0.06 × L4 + 0.024 × L5< 18 (kg)
PUHY-RP300 - RP900Y(S)JM: 0.39 × L
PUHY-RP200 - RP250YJM: 4.20× L
PUHY-RP300 - RP900Y(S)JM: 4.20× L
L0 : Length of ø22.2 liquid pipe (m)
: Length of ø19.05 liquid pipe (m)
L
1
L
: Length of ø15.88 liquid pipe (m)
2
L
: Length of ø12.7 liquid pipe (m)
3
: Length of ø9.52 liquid pipe (m)
L
4
L
: Length of ø6.35 liquid pipe (m)
5
+ 0.29 × L1 + 0.2 × L2 + 0.12 × L3 + 0.06 × L4 + 0.024 × L5< 25 (kg)
0
' + 3.12× L1' + 2.15 × L2' + 1.29 × L3' + 0.65 × L4' + 0.26 × L5' < 40 [oz]
0
' + 3.12× L1' + 2.15 × L2' + 1.29 × L3' + 0.65 × L4' + 0.26 × L5' < 56 [oz]
0
' : Length of ø22.2 [7/8"] liquid pipe [ft]
L
0
' : Length of ø19.05 [3/4"] liquid pipe [ft]
L
1
L
' : Length of ø15.88 [5/8"] liquid pipe [ft]
2
L
' : Length of ø12.7 [1/2"] liquid pipe [ft]
3
' : Length of ø9.52 [3/8"] liquid pipe [ft]
L
4
L
' : Length of ø6.35 [1/4"] liquid pipe[ft]
5
Unit: m [ft]
120 [393] or less
(Equivalent length 150 [492]or less)
(Note 2)
100 [328] or less (Note 3)
50 [164] or less
40 [131] or less
2) The maximum allowable piping length for the RP650 through RP900 models is 100 m [328 ft] (Equivalent length: 125 m [410
ft])
3) The piping length difference between the two piping systems that are merged with a branch joint should be 40 m [131 ft] or
less.
HWE10010 GB
- 51 -
Page 61
[ II Restrictions ]
3. Refrigerant pipe size
(1) Diameter of the refrigerant pipe between the outdoor unit and the first branch (outdoor unit pipe size)
Unit: (mm) [inch]
Outdoor unit set name (total capacity) Liquid pipe size Gas pipe size
RP200 model
ø12.7 [1/2"] ø28.58 [1-1/8"]RP250 model
RP300 model
RP350 model
RP400 model
RP450 model
ø15.88 [5/8"]
ø34.93 [1-3/8"]
RP500 model
RP550 model
RP600 model
RP650 model
RP700 model
RP750 model
ø19.05 [3/4"]
ø41.28 [1-5/8"]
RP800 model
RP850 model
RP900 model
(2) Size of the refrigerant pipe between the first branch and the indoor unit (indoor unit pipe size)
Unit: (mm) [inch]
model Pipe diameter
Liquid pipe Gas pipe
15 - 40 models ø6.35 [1/4"] ø12.7 [1/2"]
50 - 80 models
ø15.88 [5/8"]
ø9.52 [3/8"]
100 - 140 models ø19.05 [3/4"]
200 model
ø25.4 [1"]
ø12.7 [1/2"]
250 model ø28.58 [1-1/8"]
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[ II Restrictions ]
(3) Size of the refrigerant pipe between the branches for connection to indoor units
Total capacity of the downstream units Liquid pipe Gas pipe
- 80 ø9.52 [3/8"] ø15.88 [5/8"]
Unit: (mm) [inch]
81 - 160
ø19.05 [3/4"]
ø12.7 [1/2"]
161 - 330 ø25.4 [1"]
331 - 630 ø15.88 [5/8"] ø34.93 [1-3/8"]
631 - ø19.05 [3/4"] ø41.28 [1-5/8"]
(4) Size of the refrigerant piping between the 1st and 2nd distributor
Applicable to the RP640 model or larger
Unit: (mm) [inch]
Liquid pipe Gas pipe
ø19.05 [3/4"] ø34.93 [1-3/8"]
(5) Size of the refrigerant piping between the first distributor and the outdoor unit and between the second distributor
and the outdoor unit
Applicable to the RP400 model or larger
Unit: (mm) [inch]
model Liquid pipe Gas pipe
RP200 model
RP250 model
ø9.52 [3/8"]
ø19.05 [3/4"]
ø22.2 [7/8"]
RP300 model
RP350 model ø12.7 [1/2"] ø25.4 [1"]
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[ II Restrictions ]
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GBHWE10010
Page 64
III
Outdoor Unit Components
[1] Outdoor Unit Components and Refrigerant Circuit ..........................................................57
[2] Control Box of the Outdoor Unit.......................................................................................59
[3] Outdoor Unit Circuit Board............................................................................................... 60
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[ III Outdoor Unit Components ]
Fan
Control box
Compressor cover
Fan guard
Fin guards
Front panel
Heat exchanger
III Outdoor Unit Components
[1] Outdoor Unit Components and Refrigerant Circuit
1. Front view of an outdoor unit
(1) PUHY-RP200, RP250, RP300, RP350YJM-A
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[ III Outdoor Unit Components ]
Check valve(CV1)
High-pressure switch
(63H1)
Oil sampling port
(CJ5)
Linear expansion valve
(SLEV)
The valve to be switched at the
completion of refrigerant oil recovery
(BV3)
High-pressure switch
(63H2)
Refrigerant oil
discharge port
(CJ4)
Check valve
(CV6)
Suction pipe assembly
Oil tank (top)/
Refrigerant oil
collector (bottom)
Low-pressure sensor
(63LS)
Intermediate
pressure sensor
(63HS2)
Linear expansion valve
(LEV2a,2b)
Accumulator
(ACC)
Solenoid valve(SV1a)
Solenoid valve(SV9)
Solenoid valve(SV3)
Compressor
(COMP)
Oil separator
(O/S)
Liquid valve
(BV2)
Gas valve
(BV1)
Solenoid valve(SV1b)
Check valve(CV4)
Check valve(CV2)
Check valve(CV3)
2-way valve(SV5b)
Linear expansion valve
(LEV1)
Solenoid valve(SV8)
Automatic refrigerant
charging port (CJ3)
4-way valve(21S4a)
4-way valve(21S4b)
Check valve(CV5)
High-pressure
check joint (CJ1)
Low-pressure
check joint (CJ2)
High-pressure sensor
(63HS1)
2. Refrigerant circuit
(1) PUHY-RP200, RP250, RP300, RP350YJM-A
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[ III Outdoor Unit Components ]
<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, keep the unit off for at least 10 minutes,
and confirm that the voltage 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.)
Control board
DC reactor (DCL)
Electromagnetic relay(72C)
Noise filter
Note.1
INV board
Fan board
Rush current protection resistor
(R1,R5) Note.2
Terminal block for transmission
line (TB3, TB7)
M-NET board
Terminal block for power supply
L1,L2,L3,N,
(TB1)
Capacitor(C100)
[2] Control Box of the Outdoor Unit
1) Exercise caution not to damage the bottom and the front panel of the control box. Damage to these parts affect the waterproof and dust proof properties of the control box and may result in damage to its internal components.
2) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the terminals to remove them.
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[ III Outdoor Unit Components ]
CN332
Output 18VDC
GND
(
Fan board
)
LED2
Lit during normal
CPU operation
CN72
72C
driving output
Serial communication signal input
GND (
INV board)
Output 17VDC
CN801
Pressure switch
connection
CN4
GND
Serial communication signal output
LEV
driving output
LED1
Service LED
SWU1,2
Address switch
SW1-5
Dip
switch
Sensor
input
CNVCC2
Output 12VDC
Output 5VDC
GND
CNIT
Output 12VDC
GND
Output 5VDC
Power supply detection input
Power supply ON/OFF signal output
CNS2
Transmission line input/output
for centralized control system (30VDC)
CN41
Power supply for
centralized control OFF
CN40
Power supply for
centralized control ON
CN102
Indoor/outdoor transmission line input/output (30VDC)
Power supply input for centralized control system (30VDC)
External signal input (contact input)
F01
Fuse
250V AC/3.15A
CNAC
L1
N
LED3
Lit
when powered
LED3
Lit
when powered
Actuator
driving output
Output 12VDC
Compressor
ON/OFF output
Error output
CN51
CNAC2
L1
N
CNDC
Bus voltage input
P
N
CN2
[3] Outdoor Unit Circuit Board
1. Outdoor unit control board
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[ III Outdoor Unit Components ]
2. M-NET board
Grounding
CN04
Bus voltage input
P
N
CNS2
Transmission line input/output for
CN102
Power supply output for centralized control system
Indoor/outdoor transmission line input/output
Grounding
Grounding
TB3
Indoor/outdoor
transmission block
centralized control system
Ground terminal for
transmission line
CNIT
12VDC input
GND
5VDC input
Power supply detection output
Power supply ON/OFF
signal input
TB7
Terminal block for
transmission line for
centralized control
LED1
Power supply for
indoor
transmission line
TP1,2
Check pins for
indoor/outdoor
transmission line
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Page 71
[ III Outdoor Unit Components ]
3. INV board
Bus voltage check
terminal (P)
Note
IGBT
(Rear)
CN1
Bus voltage output
N
P
Bus voltage check
terminal (N)
Note 1
SC-L1
Input(L1)
SC-L2
Input(L2)
SC-P1
SC-P2
Bus voltage Input(P)
Rectifier diode output (P)
CN6
Open: No-load operation setting
LED1
Lit: Inverter in normal operation
Blink: Inverter error
Short-circuited: Normal setting
CN5V
GND
5VDC output
RSH1
Overcurrent detection
resistor
CN4
GND
CNTYP Inverter
board type
SC-V
Inverter output(V)
SC-W
Inverter output(W)
SC-U
Inverter output(U)
(Fan Board)
Serial communication
signal output
CN2
S
erial communication
signal output
GND
17VDC input
SC-L3
Input(L3)
CT22
Current sensor(W)
CT3
Current sensor(L3)
CT12
Current sensor(U)
C30 C37
Smoothing capacitor
1) Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that
the voltage 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.
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[ III Outdoor Unit Components ]
4. Fan board
CNVDC
Bus voltage input
N
P
CNINV
Inverter output
W
V
U
R630,R631
Overcurrent detection
resistor
DIP IPM Rear
CN18V
Input 18VDC
GND
LED3
Lit during normal
CPU operation
CN4
GND
Serial communication signal output
CN5
GND(Control board)
Serial communication signal output
CN21
Serial communication signal output
GND(INV board)
Input 17VDC
CN22
GND(INV board)
Input 5VDC
Serial communication signal input
GND(INV board)
Output 17VDC
THBOX
Thermistor
(Control box internal temperature
detection)
LED1
Inverter in normal operation
LED2
Inverter error
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[ III Outdoor Unit Components ]
CN4
Output
(Rectified L2-N current)
P
N
CN5
Output
(Rectified L2-N current)
P
N
TB21
Input/output(L1)
TB22
Input/output(L2)
TB23
Input/output(L3)
TB24
Input(N)
CN1B
Input
L3
L2
CN1A
Input
N
L1
Grounding
F1,F2,F3,F4
Fuse
250VAC 6.3A
CN3
Output
L1
N
Grounding
CN2
Surge absorber circuit
Surge absorber circuit
Short circuit
Short circuit
5. Noise Filter
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IV
Remote Controller
[1] Functions and Specifications of MA and ME Remote Controllers ................................... 67
[2] Group Settings and Interlock Settings via the ME Remote Controller ............................. 68
[3] Interlock Settings via the MA Remote Controller ............................................................. 72
[4] Using the built-in Temperature Sensor on the Remote Controller ................................... 73
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Page 76
[ IV Remote Controller ]
MA remote controller
Outdoor unit
Indoor unit
M-NET transmission line
(indoor/outdoor transmission line)
groupgroup
ME remote controller
Outdoor unit
Indoor unit
M-NET transmission line
(indoor/outdoor transmission line)
group group
IV Remote Controller
[1] Functions and Specifications of MA and ME Remote Controllers
There are two types of remote controllers: ME remote controller, which is connected on the indoor-outdoor transmission
line, and MA remote controller, which is connected to each indoor unit.
1. Comparison of functions and specifications between MA and ME remote controllers
Functions/specifications MA remote controller
*1*2
ME remote controller
*2*3
Remote controller address settings Not required Required
Indoor/outdoor unit address settings
Wiring method Non-polarized 2-core cable
Not required (required only by a system
with one outdoor unit)
*4
Required
Non-polarized 2-core cable
To perform a group operation, daisy-
chain the indoor units using non-polarized 2-core cables.
Remote controller connection Connectable to any indoor unit in the
group
Interlock with the ventilation unit Each indoor unit can individually be in-
terlocked with a ventilation unit. (Set up
via remote controller in the group.)
Changes to be made upon grouping change
MA remote controller wiring between indoor units requires rewiring.
Connectable anywhere on the indoor-outdoor transmission line
Each indoor unit can individually be interlocked with a ventilation unit. (Set up via
remote controller.)
Either the indoor unit address and remote
controller address must both be changed,
or the registration information must be
changed via MELANS.
*1. MA remote controller refers to MA remote controller (PAR-20MAA, PAR-21MAA), MA simple remote controller, and wire-
less remote controller.
*2. Either the MA remote controller or the ME remote controller can be connected when a group operation of units in a sys-
tem with multiple outdoor units is conducted or when a system controller is connected.
*3. ME remote controller refers to ME remote controller and ME simple remote controller.
*4. Depending on the system configuration, some systems with one outdoor unit may require address settings.
2. Remote controller selection criteria
MA remote controller and ME remote controller have different functions and characteristics. Choose the one that better suits
the requirements of a given system. Use the following criteria as a reference.
MA remote controller
*1*2
There is little likelihood of system expansion and group-
ing changes.
Grouping (floor plan) has been set at the time of instal-
lation.
ME remote controller
There is a likelihood of centralized installation of remote
controllers, system expansion, and grouping changes.
Grouping (floor plan) has not been set at the time of in-
stallation.
*1*2
To connect the remote controller directly to the OA pro-
cessing unit.
*1. ME remote controller and MA remote controller cannot both be connected to the same group of indoor units.
*2. A system controller must be connected to a system to which both MA remote controller and ME remote controller are con-
nected.
<System with MA remote controller> <System with ME remote controllers>
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[ IV Remote Controller ]
<Deletion error>
[Normal display]
(B) Interlock Settings (A) Group Settings
Indoor unit address display window
Indoor unit
address
display window
Interlocked unit
address
display window
Make the following settings to perform a group operation of units that are connected to different outdoor units or to manually set up the
indoor/outdoor unit address.
(A) Group settings...........Registration of the indoor units to be controlled with the remote controller,
and search and deletion of registered information.
(B) Interlock settings........Registration of LOSSNAY units to be interlocked with the indoor units,
and search and deletion of registered information
[Operation Procedures]
(1) Address settings
Register the indoor unit to be controlled with the remote controller.
Bring up either the blinking display of HO by turning on the unit or the
normal display by pressing the ON/OFF button.
The display window must look like one of the two figures below to proceed to the
next step.
1
2
Bring up the Group Setting window.
-Press and hold buttons [FILTER] and [ ]
simultaneously for 2 seconds to bring up the display as
shown below.
3
A
C
D
B
Select the unit address.
-
Select the address of the indoor unit to be registered by pressing
button
[TEMP. ( ) or ( )] to advance or go back
through the addresses.
Register the indoor unit whose address appears on the
display.
- Press button [TEST] to register the indoor unit address
whose address appears on the display.
- If registration is successfully completed, unit type will appear
on the display as shown in the figure below.
- If the selected address does not have a corresponding indoor
unit, an error message will appear on the display. Check the
address, and try again.
5
<Successful completion of registration>
Unit type (Indoor unit in this case)
blinks to indicate a registration error.
(Indicates that selected address does not have a
corresponding unit.)
4
To register the addresses for multiple indoor units, repeat
steps and above.
3
4
To search for an address,
go to section (2) Address Search.
To next page.
To search for an address,
go to section (2) Address Search.
Bring up the Interlock Setting window.
-Press button [ ] to bring up the following display.
Press again to go back to the Group Setting window as shown
under step .
6
G
2
Both the indoor unit address and
interlocked unit address will be
displayed together.
Bring up the address of the indoor unit and the address of the
LOSSNAY to be interlocked on the display.
- Select the address of the indoor unit to be registered by pressing
button [TEMP. ( ) or ( )] to advance or go back through
the addresses.
- Select the address of the LOSSNAY unit to be interlocked by
pressing button [TIMER SET ( ) or ( )] to advance or go back
through the interlocked unit addresses.
7
8
C
H
Make the settings to interlock LOSSNAY units with indoor
units.
- Press button [TEST] while both the indoor unit address and
the address of the LOSSNAY units to be interlocked
are displayed to enter the interlock setting.
- Interlock setting can also be made by bringing up the
LOSSNAY address in the indoor unit address display
window and the indoor unit address in the interlocked unit
address display window.
D
(Displayed alternately)
If registration is successfully
completed, the two displays as
shown on the left will appear
alternately.
If the registration fails,
will blink on the display.
(Indicates that the selected
address does not have a
corresponding unit.)
NOTE : Interlock all the indoor units in the group with the
LOSSNAY units; otherwise, the LOSSNAY units will
not operate.
[Blinking display of HO ]
?
A
F
D
B
H
G
C
E
PAR-F27MEA
ON/OFF
CENTRALLY CONTROLLED
DAILY
AUTO OFF
REMAINDER
CLOCK
ON OFF
˚C
CHECK MODE
FILTER
TEST RUN
LIMIT TEMP.
˚C
1Hr.
NOT AVAILABLE
STAND BY
DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
CLOCK→ON→OFF
[2] Group Settings and Interlock Settings via the ME Remote Controller
1. Group settings/interlock settings
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Page 78
[ IV Remote Controller ]
<Entry found>
<No entries found>
(C) To return to the normal display
When all the group settings and interlock settings are made, take the
following step to go back to the normal display.
Press and hold buttons [FILTER] and [ ]
simultaneously for 2 seconds to go back to the
window as shown in step .
(2) Address search
To search for the address of indoor units that have been entered into
the remote controller, follow steps and .
(A) To search group settings
Unit type
(Indoor unit in this case)
- When only one unit address is registered, the same address
will remain on the display regardless of how many times the
button is pressed.
- When the address of multiple units are registered
(i.e. 011, 012, 013 ), they will be displayed one at a time in
an ascending order with each pressing of button [ ] .
To delete an address, go to
section (3) Address Deletion.
To go back to the normal display,
follow step .
(Displayed alternately)
To delete an address,
go to section (3) Address Deletion .
Bring up the address of another registered unit on the
display.
- After completing step , a subsequent pressing of button
[ ] will bring up the address of another registered
unit.
(The display method is the same as the one in step .)
Address of an interlocked
LOSSNAY unit
Address of another
interlocked unit
Bring up on the display the address of the LOSSNAY unit
that was interlocked with the indoor unit in step .
- With each pressing of button [ ], the address of the
LOSSNAY and indoor unit that is interlocked with it will be
displayed alternately.
LOSSNAY can be searched in the same manner by bringing up
the LOSSNAY address in the Interlocked unit address display window.
(B) Interlock setting search
After performing step , proceed as follows:
Bring up the address of the indoor unit to be searched on
the display.
- Select the address of the indoor unit to be searched by pressing
button [TIMER SET ( ) or ( )] to advance or go back
through the interlocked addresses.
Repeat steps and in the previous page to interlock
all the indoor units in a group with the LOSSNAY unit.
7
8
To go back to the normal display,
follow step .
To search for an address,
go to section (2) Address Search.
(3) Address deletion
The addresses of the indoor units that have been entered into the remote controller can be deleted by deleting the group settings.
The interlock settings between units can be deleted by deleting the interlock settings.
Follow the steps in section (2) Address Search to find the address to be deleted and perform deletion with the address being displayed in the
display window. To delete an address, the address must first be bought up on the display.
Delete the registered indoor unit address or the interlock setting between units.
- Press button ? [CLOCK ON OFF] twice while either the indoor unit address or the address of the interlocked unit is displayed on the
display to delete the interlock setting.
(Displayed alternately)
10
A
B
1
Bring up the Group Setting window.
- Each pressing of button [ ] will bring up the address of a
registered indoor unit and its unit type on the display.
11
E
1
2
E
10
E
13
13
13
12
14
12
6
E
H
9
10
F
15
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[ IV Remote Controller ]
(A) To delete group settings
(B) To delete interlock settings
<Successful completion of deletion>
will be displayed in the room temperature display window.
- If a transmission error occurs, the selected setting will not be
deleted, and the display will appear as shown below.
In this case, repeat the steps above.
(Displayed alternately)
<Deletion error>
will be displayed in the room temperature display window.
(4) Making (A) Group settings and (B) Interlock settings of a group from any arbitrary remote controller
(A) Group settings and (B) Interlock settings of a group can be made from any arbitrary remote controller.
Refer to (B) Interlock Settings under section 1 Group Settings/Interlock Settings for operation procedures.
Set the address as shown below.
(A) To make group settings
Interlocked unit address display window...Remote controller address
Indoor unit address display window...........The address of the indoor unit to be controlled with the remote controller
(B) To make interlock settings
Interlocked unit address display window...LOSSNAY address
Indoor unit address display window..........The address of the indoor unit to be interlocked with the LOSSNAY
If deletion is successfully
completed, will appear in
the unit type display window.
If the deletion fails, will
appear in the unit type display
window. In this case, repeat the
steps above.
- -
To go back to the normal display, follow step .
10
In the remote controller function selection mode, the settings for four types of functions can be made or changed as necessary.
4) Narrowed preset temperature range mode
The default temperature ranges are 19 C to 30 C in the cooling/dry mode and 17 C to 28 C in the heating mode and 19 C to 28 C in the auto mode.
By changing these ranges (raising the lower limit for the cooling/dry mode and lowering the upper limit for the heating mode), energy can be saved.
When making the temperature range setting on the simultaneous cooling/heating type units that supports the automatic operation mode to save on
energy consumption, enable the Skip-Auto-Mode setting to make the automatic operation mode unselectable. If the automatic operation mode is
selected, the energy-saving function may not work properly.
When connected to the air conditioning units that do not support the automatic operation mode, the setting for the Skip-Auto-Mode, restricted preset
temperature range mode (AUTO), and operation mode display selection mode are invalid. If an attempt is made to change the preset temperature range,
“LIMIT TEMP.” appears on the display.
NOTE
[Normal display]
4
5
PAR-F27MEA
ON/OFF
FILTER
CHECK TEST
TEMP.
TIMER SET
CLOCKONOFF
1
3
2
: Press and hold the [CHECK] and
[ ] buttons simultaneously
for two seconds.
: [SET TEMP.
( ) ]
button
: [SET TEMP.
( ) ]
button
3) Room temperature display selection mode (Display or non-display of room temperature)
Although the suction temperature is normally displayed on the remote controller, the setting can be changed so that it will not appear on the
remote controller.
2) Operation mode display selection mode (Display or non-display of COOL/HEAT during automatic operation mode)
When the automatic operation mode is selected, the indoor unit will automatically perform a cooling or heating operation based on the room
temperature. In this case, or will appear on the remote controller display.
This setting can be changed so that only will appear on the display.
1) Skip-Auto-Mode setting
The automatic operation mode that is supported by some simultaneous cooling/heating type units can be made unselectable via the ME remote
controller.
[Function selection mode sequence on the remote controller]
Normal display
1 1
3
3
3
2
2
2
3
2
3
2
3
2
3
2
Skip-Auto-Mode setting
*1 *1
*2
*2
Temperature range setting mode (AUTO)
Room temperature display selection mode
*1 : Skip-Auto-Mode is enabled
*2 : Skip-Auto-Mode is disabled
Operation mode display selection mode (Display or non-display of the automatic mode)
Restricted preset temperature range mode (Heating)
Restricted preset temperature range mode (Cooling)
Remote controller function selection mode
2. Remote controller function selection via the ME remote controller
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[ IV Remote Controller ]
[Lower limit temperature]: Appears in the preset temperature display window [Upper limit temperature: Appears in the time display window
[Settable range for the lower limit temperature] : 19 C
30 C (Settable up to the upper limit temperature that is shown on the display)
[Settable range for the upper limit temperature] : 30 C 19 C (Settable up to the lower limit temperature that is shown on the display)
[Settable range for the lower limit temperature] : 17 C
28 C (Settable up to the upper limit temperature that is shown on the display)
[Settable range for the upper limit temperature] : 28 C 17 C
(Settable up to the lower limit temperature that is shown on the display)
[Settable range for the lower limit temperature] : 19 C
28 C (Settable up to the upper limit temperature that is shown on the display)
[Settable range for the upper limit temperature] : 28 C 19 C
(Settable up to the lower limit temperature that is shown on the display)
will light up in the display window, and the temperature range for the cooling/dry mode will appear on the display.
[Operation Procedures]
1. Press the [ON/OFF] button on the remote controller to bring the unit to a stop. The display will appear as shown in the previous page (Normal
display).
2. Press buttons [CHECK] and [ ] simultaneously for 2 seconds to go into the “Skip-Auto-Mode setting.”
under the remote controller function selection mode. Press button [SET TEMP. ( )] or [SET TEMP. ( )] to go into the other four modes
under the remote controller function selection mode.
1
2
3
Skip-Auto-Mode setting (Making the automatic operation mode unselectable)
“ ” blinks and either “ON” or “OFF” lights up on the controller. Pressing the [TIMER SET ( ) or ( )] button switches
between “ON” and “OFF.”
This setting is valid only when the controller is connected to the simultaneous cooling/heating type air conditioning units that
support the automatic operation mode.
When set to “ON,” the automatic operation mode is available for selection in the function selection mode.
When set to “OFF,” the automatic operation mode is not available for selection in the function selection mode, and an automatic operation
cannot be performed.
(The automatic operation mode is skipped in the function selection mode sequence.)
[The left figure shows the display that appears when the current temperature range setting is between 19 C and 30 C in the Cool/Dry mode,
and the lower limit temperature is selected to be set.]
2) Temperature range setting for heating
4
Switch between the Lower and Upper limit temperature setting by pressing the [CLOCK-ON-OFF] button. The selected temperature setting blinks.
“ ” and the settable temperature range for heating appear on the display.
As with the Cool/Dry mode, use the [CLOCK-ON-OFF] button and the [TIMER SET ( ) or ( )] to set the temperature range.
5
Room temperature display selection mode (Switching between the display or non-display of room temperature on the controller)
When set to “ON,” room temperature always appears on the display during operation.
When set to “OFF,” room temperature does not appear on the display during operation.
5
4
“ ” and the temperature range for the automatic operation mode appear on the display.
As with the Cool/Dry mode, use the [CLOCK-ON-OFF] button and the [TIMER SET ( ) or ( )] to set the temperature range.
5
4
3) Temperature range setting for the automatic mode
˚ C
“ 88 C ” blinks and either “ON” or “OFF” lights up on the controller. Pressing the [TIMER SET ( ) or ( )] button
switches between “ON” and “OFF.”
4
Operation mode display selection mode (Changing the type of display that appears during the automatic mode operation)
will blink, and either
“ON”
or “OFF” will light up.
Press button [TIMER SET ( ) or ( )] in this state to
switch between “ON” and “OFF.”
4
When it is set to ON, will appear on the display during automatic operation mode.
When it is set to OFF, only will appear on the display during automatic operation mode.
When connected to the air conditioning units that do not support the automatic operation mode, the setting for this mode is invalid.
[TIMER SET ( ) (( ))] button
[TIMER SET ( ) (( ))] button
[TIMER SET ( ) (( ))] button
[TIMER SET ( ) (( ))] button
Restricted preset temperature range mode (The range of preset temperature can be changed.)
1) Temperature range setting for the cooling/dry mode
Press button [TIMER SET ( ) or ( )] to set the lower limit temperature to the desired temperature.
4
When connected to the air conditioning units that do not support the automatic operation mode, the setting for this mode is invalid.
˚ C
HWE10010 GB
- 71 -
Page 81
[ IV Remote Controller ]
[Operation Procedures]
<Indoor unit address and indoor unit> <LOSSNAY address and LOSSNAY>
- Without interlocked LOSSNAY settings
Search result
- The indoor unit address and the interlocked LOSSNAY address will appear alternately.
Press the [ON/OFF] button on the remote controller to bring the unit to a stop.
The display window on the remote controller must look like the figure below to proceed to step .
NOTE: When using LOSSNAY units in conjunction, interlock the addresses of all indoor units within the group and address of LOSSNAY units.
Perform this operation to enter the interlock setting between the LOSSNAY and the indoor units to which the remote controller is connected, or to
search and delete registered information.
* When the upper controller is connected, make the setting using the upper controller.
In the following example, the address of the indoor unit is 05 and the address of the LOSSNAY unit is 30.
2
< 1. Registration Procedures >
Indoor unit address LOSSNAY address
Press the [TEST] button to register the address of the selected indoor unit and the interlocked LOSSNAY unit.
- Registration completed
The registered indoor unit address and IC, and the interlocked LOSSNAY address and LC will appear alternately.
- Registration error
If the registration fails, the indoor unit address and the LOSSNAY address will be displayed alternately.
Registration cannot be completed: The selected unit address does not have a corresponding indoor unit or a LOSSNAY unit.
Registration cannot be completed: Another LOSSNAY has already been interlocked with the selected indoor unit.
1
3
2
Press and hold the [FILTER] and [ ] buttons simultaneously for two seconds to perform a search for the LOSSNAY that is interlocked with the
indoor unit to which the remote controller is connected.
If no settings are necessary, exit the window by pressing and holding the [FILTER] and [ ] buttons simultaneously for 2 seconds.
Go to step 1. Registration Procedures to make the interlock settings with LOSSNAY units, or go to step 2. Search Procedures to search for a
particular LOSSNAY unit.
Go to step 3. Deletion Procedures to delete any LOSSNAY settings.
To interlock an indoor unit with a LOSSNAY unit, press the [ TEMP. ( ) or ( )] button on the remote controller that is connected to the indoor
unit, and select its address (01 to 50).
Press the [ CLOCK ( ) or ( )] button to select the address of the LOSSNAY to be interlocked (01 to 50).
5
4
7
6
[3] Interlock Settings via the MA Remote Controller
1. LOSSNAY interlock setting (Make this setting only when necessary.)
HWE10010 GB
- 72 -
Page 82
[ IV Remote Controller ]
<Indoor unit address>
- Search completed (No interlocked settings with a LOSSNAY exist.)
- The selected address does not have a corresponding indoor unit.
< 2. Search Procedures >
< 3. Deletion Procedures >
Press the [ MENU] button to search for the address of the LOSSNAY unit that is interlocked with the selected indoor unit.
- Search completed (With a LOSSNAY connection)
The indoor unit address and IC, and the interlocked LOSSNAY address and LC will appear alternately.
Take the following steps to delete the interlock setting between a LOSSNAY unit and the interlocked indoor unit from the remote controller
that is connected to the indoor unit.
Find the address of the LOSSNAY to be deleted (See section 2. Search Procedures. ), and bring up the result of the search for both the
indoor unit and LOSSNAY on the display.
Press the [ ON/OFF] button twice to delete the address of the LOSSNAY unit that is interlocked with the selected indoor unit.
- Registration completed
The indoor unit address and , and the interlocked LOSSNAY address and will appear alternately.
-Deletion error
If the deletion fails
8
9
10
11
To search for the LOSSNAY unit that is interlocked with a particular indoor unit, enter the address of the indoor unit into the remote controller that is
connected to it.
[4] Using the built-in Temperature Sensor on the Remote Controller
1. Selecting the position of temperature detection (Factory setting: SW1-1 on the controller board on the indoor unit is
set to OFF.)
To use the built-in sensor on the remote controller, set the SW1-1 on the controller board on the indoor unit to ON.
Some models of remote controllers are not equipped with a built-in temperature sensor. Use the built-in temperature sensor
on the indoor unit instead.
When using the built-in sensor on the remote controller, install the remote controller where room temperature can be detected.
HWE10010 GB
- 73 -
Page 83
[ IV Remote Controller ]
- 74 -
GBHWE10010
Page 84
V
Electrical Wiring Diagram
[1] Electrical Wiring Diagram of the Outdoor Unit .................................................................77
[2] Electrical Wiring Diagram of Transmission Booster.........................................................78
HWE10010 GB
- 75 -
Page 85
- 76 -
Page 86
[ V Electrical Wiring Diagram ]
HIC bypass, Controls refrigerant
flow in HIC circuit
Oil flow control
SLEV
Refrigerant charging port for
auto-charge
SV8
SV5b
Outdoor unit heat exchanger
capacity control
SV3
Capacity control, Refrigerant
phase control in auto-cleaning
Middle pressure
63HS2
Pressure protection for pre-
existing pipes
63H2
For opening/closing the bypass
circuit
For opening/closing the bypass
circuit
Solenoid
valve
Pipe temperature
Z24, 25
Thermistor
Discharge pipe temperature
ACC inlet pipe temperature
Subcooled liquid refrigerant
temperature
OA temperature
IPM temperature
Function setting connector
THHS
TH7
TH6
TH5
TH4
TH3
Power supply
Explanation
Indoor/Outdoor transmission
cable
Central control transmission
cable
Terminal
block
TB7
TB3
TB1
Symbol
Pressure control, Refrigerant flow
rate control
DC reactor
DCL
SV1a
LEV2a, b
LEV1
Linear
expansion
valve
Solenoid
valve
CT12, 22, 3
CH11
Crankcase heater (for heating the compressor)
Current sensor (AC)
Magnetic relay (inverter main circuit)
72C
Low pressure
Discharge pressure
High pressure protection for the
outdoor unit
Pressure
switch
Pressure
sensor
63LS
63H1
Symbol
Explanation
4-way valve
21S4a, b
For opening/closing the bypass
circuit under the O/S
SV1b
SV9
63HS1
<Symbol explanation>
*1. Single-dotted lines indicate wiring
not supplied with the unit.
*2. Dot-dash lines indicate the control
box boundaries.
*3. Refer to the Data book for connecting
input/output signal connectors.
*4. Daisy-chain terminals (TB3) on the
outdoor units in the same refrigerant
system together.
*5. Faston terminals have a locking
function. Make sure the terminals
are securely locked in place after
insertion. Press the tab on the
terminals to remove them.
*6. Control box houses high-voltage parts.
Before inspecting the inside of the
control box, turn off the power, keep
the unit off for at least 10 minutes,
and confirm that the voltage between
FT-P and FT-N on INV Board has dropped
to DC20V or less.
SV8
X14
CN510
yellow
165
SV3
SV1b
63HS2
312
CN992
yellow
123
M
SLEV
65432
1
CNLVD
blue
3112
P
63H2
1
3
DCL
M1 M2
SV1a
Z3
21
M-NET power
supply circuit
C5
LED3: CPU in
operation
LED1: Normal
operation
SC-L1
SC-L2
1
2
W
U
SC-W
1
Z5
R1R2R3
C3
C2
F3F2F1
Z1 Z2
R4
D1
R5
R6
C11
DB1
C7C8C9
C10
C4
C1
C6
Power Source
3N~
50/60Hz
380/400/415V
N
L3L2L1
TB1
N
L3L2L1
L
F4
AC250V
6.3A T
black
white
red
3
1
CN3
green
TB24
N
TB23
L3
TB22
L2
TB21
L1
CN1B
4131
CN1A
UUU
F1,F2,F3
AC250V
6.3A T
U
Z4
DSA
CN2
653
1
Noise
Filter
U
ZNR01
U
31
CN5
red
3
CN4
blue
1
471
CNINV
CNVDC
4
1
FAN Board
F01
DC700V
4A T
C630
C631
R631
R630
IPM
CN18V
blue
CN4
red
CN5
21 1 3 12
234
1
CN21
blue
CN22
red
654
3
LED2: Error
Fan motor
(Heat exchanger)
M
3~
V
C100
R1 R5
*5
black
red
2
43
1
72C
black
red
SC-P1
SC-P2
4
CN1
1
LED1: Normal operation (lit)
/ Error(blink)
CN5V
yellow
CN6
21 3 1
CN4
1
2
CN2
152
7
1
CNTYP
black
C1
RSH1
THHS
*6
FT-P
FT-N
P
N
INV Board
+
+-
+
+++
+++
+
R34
C30
C32
C34
C36
R30
R32
C31
C33
C35
C37
R31
R33
black
white
red
R35
CT3
SC-L3
IPM
SC-U
SC-V
CT12 CT22
red white black
blackwhitered
U
V
W
MS
3~
Motor
(Compressor)
Central control
transmission
cable
Indoor/Outdoor
transmission
cable
Indoor/Outdoor
transmission
cable
*4
TP2TP1
TB7
SM2M1
TB3
M-NET Board
13
CN04
red
LED1: Power supply to
Indoor/Outdoor transmission line
CN102
4321
CNS2
yellow
21 5432
CNIT
red
1
63H1
P
LEV2b
M
LEV2a
M
M
LEV1
12345
6
CNLVA
CNLVB
red
12345
6
54321
6
CNLVC
red
3
1
CNTYP2
black
Z24
321
Z25
CNTYP5
green
CNTYP4
green
432
1
CN213
red
CN212
2
1
CN990
2
1
TH6
TH7
TH3
TH5
213
63LS
63HS1
213
TH4
321
CN202
red
CN201
231
CN211
2
1
red
CNIT
yellow
CNS2
51234
OFF
ON
14
14
CN41
CN40
CN102
4321
CN3D
123
red
CN3S
123
blue
CN3N
123
*3
CNAC
red
21
F01
AC250V
3.15A T
631
SV9
X09
CN508
black
X06
X07
135
6
CN507
red
6
3
SV5b
CN506
X05
3
1
21S4a
CN504
green
X04
X03
CH11
3
1
CN503
blue
2
1
CN502
X02
X01
21S4b
1
1
CN501
2
3
CNAC2
black
6
5
72C
1
2
CN72
red
31
CNDC
pink
12
CNT01
13 12 21 21
CN801
yellow
CNT02 CN332
blue
CN4
CN2
752
1
CPU power
supply circuit
Power failure
detection circuit
Control Board
LED1
SW1
ONOFF
1
10
SW2
ONOFF
1
10
SW3
ONOFF
1
10
SW4
ONOFF
1
10
ONOFF
1
10
SW5
543
12V
1
CN51
*3
SWU2 SWU1
10's
digit
1's
digit
Unit address
setting
LED1
Display
setting
Function
setting
Compressor ON/OFF output
Error detection output
TB7 Power
selecting
connector
LED3: Lit when powered
LED2: CPU in operation
V Electrical Wiring Diagram
[1] Electrical Wiring Diagram of the Outdoor Unit
1. Electrical wiring diagram of the outdoor unit
(1) PUHY-RP200, RP250, RP300, RP350 models
- 77 -
HWE10010 GB
Page 87
[ V Electrical Wiring Diagram ]
100V/200VAC
Terminal block for power supply
(TB1)
L
Red
Red Red
White
Green
250V 5A
Grounding
Red
Red
Red
U
U
White
White White
White
White
White Blue Red Red
DSA
White
White
Blue
Red
Red
Red
Red
Varistor
Varistor
Noise filter
Stabilized power supply
4
3
2
1
1
2
3
CN2
CN1
Black
Black
Black
Black
Green/Yellow
1
2
3
E
4
Choke coil
1 2
CN3
1 2 1 2
CN4
CN2
1
2
CN1
Electronic control board
Black
White
Red
Red
Black
S
B
A
S
B
A
Terminal block 2 for
transmission line (TB3)
Expanded (indoor unit) side
Terminal block 1 for
transmission line (TB2)
Expanded (outdoor unit) side
[2] Electrical Wiring Diagram of Transmission Booster
HWE10010 GB
- 78 -
Page 88
VI
Refrigerant Circuit
[1] Refrigerant Circuit Diagram ............................................................................................. 81
[2] Principal Parts and Functions .......................................................................................... 82
HWE10010 GB
- 79 -
Page 89
- 80 -
Page 90
[ VI Refrigerant Circuit ]
ACC
63LS
63HS2
TH5
LEV1
CV5
SV1a
21S4a
O/S
COMP
BV1
BV2
LEV2a
BV3
63H1
63HS1
CJ1
CJ2
CP1
HEX AIR
HEX REF
ST1
ST2
ST3
ST5
CV1
CV4
CJ4
SV8
CJ3
CJ5
LEV2b
TH4
TH7
TH3
TH6
CV2
CV3
SV3
CV6
SLEV
ORIFICE
ø1.7
SV1b
21S4b
SV5b
SV9
*2
*1
*2
*1
CP2
63H2
Oil Tank
Mineral Oil
Collection tank
ACC
63LS
63HS2
TH5
LEV1
CV5
SV1
a
21S4a
O/S
COMP
BV1
BV2
LEV2a
BV3
63H1
63HS1
CJ1
CJ2
CP1
HEX AIR
HEX REF
ST1
ST2
ST3
ST5
CV1
CV4
CJ4
SV8
CJ3
CJ5
LEV2b
TH4
TH7
TH3
TH6
CV2
CV3
SV3
CV6
SLEV
ORIFICE
SV1b
21S4b
SV5b
SV9
*2
*1
*2
*1
63H2
ø1.7
Oil Tank
Mineral Oil
Collection tank
VI Refrigerant Circuit
[1] Refrigerant Circuit Diagram
1. Outdoor unit
(1) PUHY-RP200 model
(2) PUHY-RP250, RP300, RP350 models
HWE10010 GB
- 81 -
Page 91
[ VI Refrigerant Circuit ]
Pressure
0~4.15 MPa [601psi]
Vout 0.5~3.5V
0.071V/0.098 MPa [14psi]
Pressure [MPa]
=1.38 x Vout [V]-0.69
Pressure [psi]
=(1.38 x Vout [V] - 0.69) x 145
GND (Black)
Vout (White)
Vcc (DC5V) (Red)
Connector
63HS1
1
123
2
3
[2] Principal Parts and Functions
1. Outdoor unit
Part
name
Compressor
High
pressure
sensor
Intermediate
pressure
sensor
Low
pressure
sensor
Symbols
(functions)
MC1
(Comp1)
Notes Usage Specifications Check method
Adjusts the amount of circulating
refrigerant by adjusting the operating frequency based on the operating pressure data
63HS1
63HS2
1) Detects high pressure
2) Regulates frequency and provides high-pressure protection
63LS 1) Detects low pressure
2) Provides low-pressure protection
P200 - 250 and EP200 models
Low-pressure shell scroll
compressor
Wirewound resistance
20°C[68°F] : 0.981ohm
P300 - 450 models
EP250 · 350 models
Low-pressure shell scroll
compressor
Wirewound resistance
20°C[68°F] : 0.583ohm
Pressure
63LS
0~1.7 MPa [247psi]
Vout 0.5~3.5V
123
0.173V/0.098 MPa [14psi]
Connector
Pressure [MPa]
=0.566 x Vout [V] - 0.283
Pressure [psi]
=(0.566 x Vout [V] - 0.283) x 145
1
GND (Black)
2
Vout (White)
3
Vcc (DC5V) (Red)
Pressure
switch
63H1 1) Detects high pressure
2) Provides high-pressure protection
63H2 1) Monitors intermediate pres-
sure.
2) Provides intermediate-pressure protection.
4.15MPa[601psi] OFF setting
3.3MPa[479psi] OFF setting
HWE10010 GB
- 82 -
Page 92
[ VI Refrigerant Circuit ]
R = 7.465k
120
R = 4057
R =
7.465
25/120
t
4057
273 t
1
393
1
exp
R = 15k
0
R = 3460
R = 15
0/80
t
3460
273 t
1
273
1
exp
R = 17k
50
R = 4016
R = 17
25/120
t
4016
273 t
1
323
1
exp
Part
name
Thermistor
Symbols
(functions)
TH4
(Discharge)
TH3
(Pipe
temperature)
TH7
(Outdoor temperature)
Notes Usage Specifications Check method
1) Detects discharge air temperature
Degrees Celsius Resistance
check
2) Provides high-pressure protection
0°C[32°F] :698kohm
10°C[50°F] :413kohm
20°C[68°F] :250kohm
30°C[86°F] :160kohm
40°C[104°F] :104kohm
50°C[122°F] : 70kohm
60°C[140°F] : 48kohm
70°C[158°F] : 34kohm
80°C[176°F] : 24kohm
90°C[194°F] :17.5kohm
100°C[212°F] :13.0kohm
110°C[230°F] : 9.8kohm
1) Controls frequency
2) Controls defrosting during
Degrees Celsius
Resistance
check
heating operation
3) Controls LEV1 according to
the temperature of the subcooled refrigerant at the heat
exchanger outlet as calculated from the 63HS1 and TH3
readings.
1) Detects outdoor air temperature
0°C[32°F] :15kohm
10°C[50°F] :9.7kohm
20°C[68°F] :6.4kohm
25°C[77°F] :5.3kohm
30°C[86°F] :4.3kohm
40°C[104°F] :3.1kohm
2) Controls fan operation
TH5, TH6 Controls LEV1 according to the
TH3, TH5, and TH6 readings.
THHS
Inverter
Controls inverter cooling fan
based on THHS temperature
heat sink temperature
THBOX
Control box internal temperature detection
Degrees Celsius
0°C[32°F] :161kohm
10°C[50°F] :97kohm
20°C[68°F] :60kohm
25°C[77°F] :48kohm
30°C[86°F] :39kohm
40°C[104°F] :25kohm
HWE10010 GB
- 83 -
Page 93
[ VI Refrigerant Circuit ]
Part
name
Solenoid
valve
Symbols
(functions)
SV1a, SV1b
Discharge-suction
bypass
SV3
(Controls the
refrigerant flow
in the plate heat
exchanger.)
SV5b
Heat
exchanger
capacity control
SV8
(Controls the
refrigerant flow
during automatic refrigerant
charging operation.)
Notes Usage Specifications Check method
1) High/low pressure bypass at
start-up and stopping, and
capacity control during lowload operation
AC220-240V
Open while being powered/
closed while not being powered
Continuity
check with a
tester
2) High-pressure-rise prevention
(1) Controls the refrigerant flow
while cleaning the piping system in the heating mode.
(2) Prevents the high pressure
from rising too high during
heating operation.
Controls outdoor unit heat exchanger capacity
Opens or closes as necessary
during automatic refrigerant
charging operation.
SV9 Allow refrigerant to bypass when
starting up in the heating mode at
low ambient pressure or when resuming normal operation after the
completion of defrost.
Linear
expansion
valve
LEV1
(SC control)
SLEV
(Refrigerant oil
return)
LEV2a
LEV2b
(Controls the
Adjusts the amount of bypass flow
from the liquid pipe on the outdoor
unit during cooling
Controls the amount of refrigerant
oil that returns to the compressor
from the accumulator.
Keeps the intermediate pressure
within a specific range during cool-
ing.
intermediate
pressure.)
Heater CH11 Heats the refrigerant in the com-
pressor
4-way
valve
21S4a Changeover between heating and
cooling
21S4b 1) Changeover between heating
and cooling
2) Controls outdoor unit heat exchanger capacity
Open while being powered/
closed while not being powered
DC12V
Opening of a valve driven by a
stepping motor 0-480 pulses
(direct driven type)
DC12V
Opening of a valve driven by a
stepping motor 1400 pulses
Cord heater AC230V
RP200 model
1511 ohm 35W
RP250 - RP350 models
1176 ohm 45W
AC220-240V
Dead: cooling cycle
Live: heating cycle
AC220-240V
Dead: cooling cycle
Outdoor unit heat exchanger
capacity at 100%
Live: heating cycle
Outdoor unit heat exchanger
capacity at 50%
or heating cycle
Same as indoor LEV
The resistance
value differs
from that of the
indoor LEV.
(Refer to the
section "LEV
Troubleshooting.")
(page 228)
Same as indoor LEV
Resistance
check
Continuity
check with a
tester
HWE10010 GB
- 84 -
Page 94
[ VI Refrigerant Circuit ]
1
273+t
R0=15k
R
0/80
=3460
Rt =
15exp{3460( - )}
1
273
2. Indoor Unit
Part
Name
Linear
expansion valve
Thermistor
Symbol
(functions)
Notes Usage Specification Check method
LEV 1) Adjusts superheat at the
indoor heat exchanger
outlet during cooling
2) Adjusts subcool at the
heat exchanger outlet of
the indoor unit during
cooling
TH1
Indoor unit control (Thermo)
(Suction air
temperature)
TH2
(Pipe temperature)
1) Indoor unit control (Frost
prevention, Hot adjust)
2) LEV control during heating operation (subcool
detection).
TH3
(Gas pipe
LEV control during cooling operation (superheat detection)
temperature)
DC12V
Opening of stepping motor
driving valve 0-(1800) pulses
0°C [32°F]:15kohm
10°C [50°F] :9.7kohm
20°C [68°F]:6.4kohm
25°C [77°F] :5.3kohm
30°C [86°F] :4.3kohm
40°C [104°F] :3.1kohm
Refer to the section
"Continuity Test with a
Tester".
Continuity between
white, red, and orange.
Continuity between
yellow, brown, and
blue.
White
Red
Orange
Yellow
M
Brown Blue
Resistance check
TH4
Outdoor air
temperature)
Temperature
sensor (Indoor air temperature)
Indoor unit control (Thermo)
Indoor unit control (Thermo)
HWE10010 GB
- 85 -
Page 95
[ VI Refrigerant Circuit ]
HWE10010 GB
- 86 -
Page 96
VII
Control
[1] Functions and Factory Settings of the Dipswitches .........................................................89
[2] Controlling the Outdoor Unit ............................................................................................95
[3] Operation Flow Chart..................................................................................................... 107
HWE10010 GB
- 87 -
Page 97
- 88 -
Page 98
[ VII Control ]
VII Control
[1] Functions and Factory Settings of the Dipswitches
1. Outdoor unit
(1) Control board
Function according to switch setting Switch setting timing
Switch Function
OFF ON OFF ON OC OS
SWU 1-2 Unit address setting Set to 00 or 51-100 with the dial switch Before power on C C
SW1 1-10
1
2
3
For self-diagnosis/
operation monitoring
Centralized control
switch
Deletion of connection information
Deletion of error history SW
Refer to the LED monitor display on the
outdoor unit board.
Without connection
to the centralized
controller
With connection to
the centralized controller
Anytime after power on
Before power on
Normal control Deletion Before power on
(OC) Storage of IC/
OC error history
(OC) Deletion of IC/
OC error history
Anytime after power on
(When switched from OFF
(OS) Storage of OS
error history
(OS) Deletion of
OS error history
to ON)
After being energized and
4 Pump down mode Normal control Pump down mode
while the compressor is
stopped
SW2
5- - - - -6- - - - --
Anytime af-
Forced defrost
7
(Note 3)
Normal control
Forced defrost
starts
10 minutes
after compressor
startup
ter power
on (When
switched
from OFF to
ON)
Defrost timer setting
8
(Note 3)
50 minutes 90 minutes
Anytime after power on
(When switched from OFF
to ON)
9- - - - --
10 - - - - - -
Units that re-
quire switch
setting
Note.2
CC
BB
A-
CC
A-
AA
BB
1) Unless otherwise specified, leave the switch to OFF where indicated by "-," which may be set to OFF for a reason.
2) A: Only the switch on either the OC or OS needs to be set for the setting to be effective on both units.
B: The switches on both the OC and OS need to be set to the same setting for the setting to be effective.
C: The setting is effective for the unit on which the setting is made.
3) Refer to "VII [2] Controlling the Outdoor Unit" for details.(page 95)
HWE10010 GB
- 89 -
Page 99
[ VII Control ]
Switch Function
Test run/Refrigerant oil
recovery operation En-
1
abled/Disabled
Test run mode: ON/
2
OFF
Defrost start temper-
3
ature (Note 2)
Units that re-
Function according to switch setting Switch setting timing
quire switch
setting
Note.2
OFF ON OFF ON OC OS
SW3-2, SW4-8 Disabled
Stops all ICs
SW3-2, SW4-8 Enabled
Sends a test-run
signal to all IC
Anytime after power on A -
After power on and when
SW3-1 is on.
A-
-10°C [14°F] -5°C [23°F] Anytime after power on B B
SW3
SW4
Defrost end temper-
4
ature (Note 2)
10°C [50°F] 5°C [41°F]
Anytime after power on (except
during defrost operation)
BB
5- - - - --
Temperature unit
6
setting
°C °F (Note 4) Anytime after power on C C
7- - - - -8- - - - --
9 Model setting
10 Model setting
Outdoor standard
static pressure
High static pressure
60Pa
Outdoor high static
pressure
High static pressure
30Pa
Before being energized C C
Before being energized C C
1- - - - -2- - - - --
Anytime after being ener-
Refrigerant amount
3
adjustment
Low-noise mode/
4
step demand switching
Normal operation
mode
Low-noise mode
(Note 3)
Refrigerant amount
adjust mode
Step demand mode Before being energized C C
gized (except during initial
startup mode.
Automatically cancelled 60
minutes after compressor
startup)
A-
5- - - - --
Cumulative com-
6
pressor operation
time data deletion
Cumulative compressor operation time
data is retained.
Cumulative compressor operation time
data is deleted.
Anytime after power on
(when the unit is turned
on)
CC
Refrigerant oil recov-
7
ery Necessary/Un-
Unnecessary Necessary Before being energized B B
necessary (Note 5)
8 Operation type Normal control
Refrigerant oil recovery
operation Heating/
9
Cooling mode selection
(Auto/Manual)
Refrigerant oil recovery
operation mode selec-
10
tion (Cooling/Heating)
1) Unless otherwise specified, leave the switch to OFF where indicated by "-," which may be set to OFF for a reason.
2) A: Only the switch on either the OC or OS needs to be set for the setting to be effective on both units.
B: The switches on both the OC and OS need to be set to the same setting for the setting to be effective.
C: The setting is effective for the unit on which the setting is made.
3) The noise level is reduced by controlling the compressor frequency and outdoor fan rotation speed.
Setting of CN3D is required.(page 27)
4) Set SW3-6 to OFF (ºC setting) after servicing.
5) The refrigerant oil recovery operation can be cancelled and normal operation can be started if Stage 3 in the cooling mode or Stage
4 in the heating mode has been completed. To cancel the operation, set the SW4-7 to OFF.
HWE10010 GB
Auto (SW4-10 disabled)
Cooling Heating
Refrigerant oil recovery operation
Manual (SW4-10
Enabled)
- 90 -
After being energized and
when SW3-1 is set to ON
Any time after being energized
After being energized and
when SW4-9 is set to ON
(except during refrigerant oil
recovery operation)
A-
A-
A-
Page 100
[ VII Control ]
Units that re-
Switch Function
Function according to switch setting Switch setting timing
quire switch
setting
Note.2
OFF ON OFF ON OC OS
1
2
Model selection See the table below (Note 4) Before being energized C C
3
4
SW5
Low-noise mode
5
selection
6- - - - --
Capacity priority
mode (Note 3)
Low-noise mode Before being energized A -
7 Model selection See the table below (Note 4) Before being energized B B
8- - - - --
9- - - - --
Automatic refriger-
10
ant charging
Normal control
Starts automatic refrigerant charging
Any time after being energized
A-
1) Unless otherwise specified, leave the switch to OFF where indicated by "-," which may be set to OFF for a reason.
2) A: Only the switch on either the OC or OS needs to be set for the setting to be effective on both units.
B: The switches on both the OC and OS need to be set to the same setting for the setting to be effective.
C: The setting is effective for the unit on which the setting is made.
3) When set to the capacity priority mode and if the following conditions are met, the Low-noise mode will terminate, and the unit
will go back into the normal operation mode.
Cooling: Outside temperature is high or high pressure is high.
Heating: Outside temperature is low or low pressure is low.(page 25)
4) The table below summarizes the factory settings for dipswitches SW5-1 through SW5-4, and SW5-7. The factory setting for
all other dipswitches is OFF.
5) The refrigerant oil recovery operation can be cancelled and normal operation can be started if Stage 3 in the cooling mode or
Stage 4 in the heating mode has been completed. To cancel the operation, set the SW4-7 to OFF.
SW 5
12347
OFF ON OFF OFF ON RP200 model
ON ON OFF OFF ON RP250 model
OFF OFF ON OFF ON RP300 model
OFF ON ON OFF ON RP350 model
(2) INV board
Functions are switched with the following connector.
Connector Function
CN6 shortcircuit con-
nector
Enabling/disabling the following error
detection functions;
ACCT sensor failure
(5301 Detail No. 115)
ACCT sensor circuit failure
(5301 Detail No.117)
IPM open/ACCT erroneous wiring
(5301 Detail No. 119)
Detection of ACCT erroneous wiring
(5301 Detail No.120)
model
Function according to connec-
tor
Setting timing
Enabled Disabled Enabled Disabled
Error detection enabled
Error detection disable
Anytime after power on
(No load operation is possible.)
CN6 short-circuit connector is mated with the mating connector.
Leave the short-circuit connector on the mating connector during normal operation to enable error detection and protect the
equipment from damage.
HWE10010 GB
- 91 -
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