Mitsubishi Electric CMB-WP1016V-GA1, CMB-WP108V-GA1, CMB-WP108V-GB1, CMB-WP1016V-GB1 Service Manual

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HWE1410A GB

Safety Precautions

Before installing the unit, thoroughly read the following safety precautions.
Observe these safety precautions for your safety.

WARNING

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.

CAUTION

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.

WARNING

Do not use refrigerant other than the type indicated in
the manuals provided with the unit and on the name­plate.

Doing so may cause the unit or pipes to burst, or result in
explosion or fire during use, during repair, or at the time of
disposal of the unit.
It may also be in violation of applicable laws.
MITSUBISHI ELECTRIC CORPORATION cannot be held
responsible for malfunctions or accidents resulting from the
use of the wrong type of refrigerant.

Ask 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.

Do not touch the heat exchanger fins.

The fins are sharp and dangerous.

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.

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.

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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.

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.

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.

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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HWE1410A GB

Precautions for handling units for use with R410A

CAUTION

Do not use the existing refrigerant piping.

A large amount of chlorine that may be contained in the re-

sidual refrigerant and refrigerating machine oil in the exist­ing piping may cause the refrigerating machine oil in the
new unit to deteriorate.

R410A is a high-pressure refrigerant and can cause the

existing pipes to burst.

Use refrigerant pipes 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 water.

These types of contaminants inside the refrigerant pipes
may cause the refrigerant oil to deteriorate.

Store the pipes to be installed indoors, and keep both
ends of the pipes sealed until immediately before braz­ing. (Keep elbows and other joints wrapped in plastic.)

Infiltration of dust, dirt, or water into the refrigerant system
may cause the refrigerating machine oil to deteriorate or
cause the unit to malfunction.

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 re­frigerating machine oil to deteriorate.

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.

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.

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.

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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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Before installing the unit (moving and reinstalling the unit) and performing
electrical work

CAUTION

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.

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.

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.

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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.

Use circulation and makeup water that meet the water­quality standards.

Degradation of water quality can result in water leakage.

In areas where temperature drops to freezing during
the periods of non-use, blow the water out of the pipes
or fill the pipes with anti-freeze solution.

Not doing so may cause the water to freeze, resulting in
burst pipes and damage to the unit or the furnishings.

CONTENTS

HWE1410A GB

I Read Before Servicing

[1] Read Before Servicing.............................................................................................................. 3

[2] Necessary Tools and Materials ................................................................................................ 4

[3] Piping Materials ........................................................................................................................ 5

[4] Storage of Piping ...................................................................................................................... 7

[5] Pipe Processing........................................................................................................................ 7

[6] Brazing...................................................................................................................................... 8

[7] Air Tightness Test (Refrigerant Circuit) ....................................................................................9

[8] Vacuum Drying (Evacuation) (Refrigerant Circuit).................................................................. 10

[9] Refrigerant Charging .............................................................................................................. 12

[10] Remedies to be taken in case of a Refrigerant Leak............................................................ 12

[11] Characteristics of the Conventional and the New Refrigerants ............................................ 13

[12] Notes on Refrigerating Machine Oil...................................................................................... 14

[13] Water piping.......................................................................................................................... 15

II Restrictions

[1] System configuration .............................................................................................................. 21

[2] Switch Settings and Address Settings .................................................................................... 22

[3] An Example of a System to which an MA Remote Controller is connected ........................... 24

[4] An Example of a System to which an ME Remote Controller is connected ........................... 30

[5] An Example of a System to which both MA Remote Controller and ME Remote

Controller are connected ........................................................................................................32

[6] Restrictions on Pipe Length.................................................................................................... 35

III HBC Controller Components

[1] HBC Controller Components .................................................................................................. 39

[2] Sub-HBC Components ........................................................................................................... 42

[3] Control Box of the HBC Controller and Sub-HBC................................................................... 44

[4] HBC Controller and Sub-HBC Circuit Board........................................................................... 45

IV Electrical Wiring Diagram

[1] Electrical Wiring Diagram of the HBC Controller and Sub-HBC ............................................. 49

[2] Electrical Wiring Diagram of Transmission Booster................................................................ 57

V Refrigerant Circuit

[1] Refrigerant Circuit Diagram .................................................................................................... 61

[2] Principal Parts and Functions ................................................................................................. 64

VI Control

[1] Functions and Factory Settings of the Dipswitches ................................................................ 69

[2] Controlling HBC Controller ..................................................................................................... 70

[3] Operation Flow Chart.............................................................................................................. 79

VII Test Run Mode

[1] Items to be checked before a Test Run.................................................................................. 87

[2] Operating Characteristic and Refrigerant Amount.................................................................. 88

[3] Adjusting the Refrigerant Amount........................................................................................... 88

[4] Refrigerant Amount Adjust Mode............................................................................................ 91

[5] The following symptoms are normal. ...................................................................................... 91

[6] Standard Operation Data (Reference Data) ........................................................................... 92

VIII Troubleshooting

[1] Error Code Lists.................................................................................................................... 111

[2] Responding to Error Display on the Remote Controller........................................................ 115

[3] Investigation of Transmission Wave Shape/Noise ............................................................... 163

[4] Troubleshooting Principal Parts ............................................................................................ 166

[5] Refrigerant Leak ................................................................................................................... 176

[6] Servicing the HBC controller................................................................................................. 178

[7] Instructions for debris removal operation.............................................................................. 180

[8] Instructions for the air vent operation ................................................................................... 181

[9] Instructions for the water pump replacement........................................................................ 182

IX LED Monitor Display on the Outdoor Unit Board

[1] How to Read the LED on the Service Monitor ...................................................................... 201

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I Read Before Servicing

[1] Read Before Servicing ....................................................................................................... 3

[2] Necessary Tools and Materials.......................................................................................... 4

[3] Piping Materials ................................................................................................................. 5

[4] Storage of Piping ............................................................................................................... 7

[5] Pipe Processing................................................................................................................. 7

[6] Brazing............................................................................................................................... 8

[7] Air Tightness Test (Refrigerant Circuit).............................................................................. 9

[8] Vacuum Drying (Evacuation) (Refrigerant Circuit)........................................................... 10

[9] Refrigerant Charging........................................................................................................ 12

[10] Remedies to be taken in case of a Refrigerant Leak .......................................................12

[11] Characteristics of the Conventional and the New Refrigerants ....................................... 13

[12] Notes on Refrigerating Machine Oil ................................................................................. 14

[13] Water piping..................................................................................................................... 15

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[ I Read Before Servicing ]

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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 CITY MULTI R2 YLM 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 "Necessary Tools and Materials" for information on the use of tools.(page 4)

5. Verification of the connecting pipes: Verify the type of refrigerant used for the unit to be moved or replaced.

Use refrigerant pipes 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 water.

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.

CAUTION

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.

[ I Read Before Servicing ]

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[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)

2. Tools and materials that may be used with R410A with some restrictions

3. Tools and materials that are used with R22 or R407C that may also be used with R410A

4. Tools and materials that must not be used with R410A

Tools for R410A must be handled with special care to keep moisture and dust from infiltrating the cycle.

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.

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. Re­fer to I [3] Piping Materials.

Refrigerant Recovery Equipment Refrigerant recovery May be used if compatible 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
ø12.7 (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

Tools/Materials Use Notes

Charging Cylinder Refrigerant charging Prohibited to use

[ I Read Before Servicing ]

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[3] Piping Materials

1. Copper pipe materials

The distinction between O-materials (Soft Annealed) and 1/2H-materials (Light Annealed) is made based on the strength of

the pipes themselves.

2. Types of copper pipes

3. Piping materials/Radial thickness

Use refrigerant pipes made of phosphorus deoxidized copper.
The operation pressure of the units that use R410A is higher than that of the units that use R22.
Use pipes that have at least the radial thickness specified in the chart below.
(Pipes with a radial thickness of 0.7 mm or less may not be used.)

For the models for use with R410A, pipes made with O-material (soft annealed) cannot be used unless they have a diameter

of at least ø19.05 (3/4") and a radial thickness of 1.2 t. Use pipes made with 1/2H-material (light annealed).

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.

O-material (Soft Annealed) Soft copper pipes (annealed copper pipes). They can easily be bent with hands.

1/2H-material (Light Annealed) Hard copper pipes (straight pipes). They are stronger than the O-material (Soft An-

nealed) at the same radial thickness.

Maximum working pressure Refrigerant type

3.45 MPa [500psi] R22, R407C etc.

4.30 MPa [624psi] R410A etc.

Pipe size (mm[in]) Radial thickness (mm) Type

ø6.35 [1/4"] 0.8t

O-material (Soft Annealed)

ø9.52 [3/8"] 0.8t

ø12.7 [1/2"] 0.8t

ø15.88 [5/8"] 1.0t

ø19.05 [3/4"] 1.0t

1/2H-material,

H-material

(Light Annealed, Skin Hard)

ø22.2 [7/8"] 1.0t

ø25.4 [1"] 1.0t

ø28.58 [1-1/8"] 1.0t

ø31.75 [1-1/4"] 1.1t

ø34.93 [1-3/8"] 1.2t

ø41.28 [1-5/8"] 1.4t

Do not use the existing piping!

[ I Read Before Servicing ]

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HWE1410A GB

4. Thickness and refrigerant type indicated on the piping materials

Ask the pipe manufacturer for the symbols indicated on the piping material for new refrigerant.

5. Flare processing (O-material (Soft Annealed) and OL-material only)

The flare processing dimensions for the pipes that are used in the R410A system are larger than those in the R22 system.

(ø19.05 pipes should have a radial thickness of 1.2 t and be made of annealed materials.)
If a clutch-type flare tool is used to flare the pipes in the system using R410A, the length of the pipes must be between 1.0
and 1.5 mm. For margin adjustment, a copper pipe gauge is necessary.

6. Flare nut

The flare nut type has been changed to increase the strength. The size of some of the flare nuts have also been changed.

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.

Flare processing dimensions (mm[in])

Pipe size (mm[in])

A dimension (mm)

R410A R22, R407C

ø6.35 [1/4"] 9.1 9.0

ø9.52 [3/8"] 13.2 13.0

ø12.7 [1/2"] 16.6 16.2

ø15.88 [5/8"] 19.7 19.4

ø19.05 [3/4"] 24.0 23.3

Flare nut dimensions (mm[in])

Pipe size (mm[in])

B dimension (mm)

R410A R22, R407C

ø6.35 [1/4"] 17.0 17.0

ø9.52 [3/8"] 22.0 22.0

ø12.7 [1/2"] 26.0 24.0

ø15.88 [5/8"] 29.0 27.0

ø19.05 [3/4"] 36.0 36.0

Dimension A

Dimension B

[ I Read Before Servicing ]

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HWE1410A GB

[4] Storage of Piping

1. Storage location

Store the pipes to be used indoors. (Warehouse at site or owner's warehouse)
If they are left outdoors, dust, dirt, or moisture may infiltrate and contaminate the pipe.

2. Sealing the pipe ends

Both ends of the pipes should be sealed until just before brazing.
Keep elbow pipes and T-joints in plastic bags.

The new refrigerator oil is 10 times as hygroscopic as the conventional refrigerating machine oil (such as Suniso) and, if not
handled with care, could easily introduce moisture into the system. Keep moisture out of the pipes, for it will cause the oil to
deteriorate and cause a compressor failure.

[5] 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.

[ I Read Before Servicing ]

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[6] 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

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

The new refrigerating machine oil is 10 times as hygroscopic as the conventional oil and is more likely to cause unit failure if

water infiltrates into the system.

Flux generally contains chloride. Residual flux in the refrigerant circuit will cause sludge to form.

3. Notes

Do not use commercially available antioxidants because they may cause the pipes to corrode or refrigerating machine oil to
deteriorate.

Use of oxidized solder for brazing Use of non-oxidized solder for brazing

[ I Read Before Servicing ]

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HWE1410A GB

[7] Air Tightness Test (Refrigerant Circuit)

No changes have been made in the detection method. Note that a refrigerant leak detector for R22 will not detect an R410A leak.

1. Items to be strictly observed

Pressurize the equipment with nitrogen up to the design pressure (4.15MPa[601psi]), and then judge the equipment's air tight-

ness, taking temperature variations into account.

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

Procure a leak detector that is specifically designed to detect an HFC leak. A leak detector for R22 will not detect an
HFC(R410A) leak.

Halide torch R22 leakage detector

[ I Read Before Servicing ]

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HWE1410A GB

[8] Vacuum Drying (Evacuation) (Refrigerant Circuit)

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.)

(Photo1) 15010H (Photo2) 14010

Recommended vacuum gauge:
ROBINAIR 14010 Thermistor Vacuum Gauge

[ I Read Before Servicing ]

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HWE1410A GB

7. Notes

To evacuate air from the entire system

Applying a vacuum through the check joints at the refrigerant service valve on the high and low pressure sides (BV1
and 2) is not enough to attain the desired vacuum pressure.
Be sure to apply a vacuum through the check joints at the refrigerant service valve on the high and low pressure
sides (BV1 and 2) and also through the check joints on the high and low pressure sides (CJ1 and 2).

To evacuate air only from the outdoor units

Apply a vacuum through the check joints on the high and low pressure sides (CJ1, and 2).

Open the valves in the HBC controller, and switch on the power to the outdoor units, HBC controllers, and indoor

units before performing evacuation so that all refrigerant circuits will be open. (By switching on the power to the in­door units, normal M-NET communication will be maintained.)

[ I Read Before Servicing ]

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HWE1410A GB

[9] Refrigerant Charging

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.

[10] 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 "VIII [5] Refrigerant Leak."(page 176)

Cylinder with a siphon

Cylinder color R410A is pink. Refrigerant charging in the liquid state

Cylin­der

liquid

Valve Valve

liquid

Cylin­der

Cylinder without a siphon

[ I Read Before Servicing ]

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HWE1410A GB

[11] 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.

*1 When CFC11 is used as a reference
*2 When CO

2

is used as a reference

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.

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
(25°C,MPa/77°F,psi) (gauge)

1.557/226 0.9177/133 0.94/136

Saturated Steam Density
(25°C,kg/m3/77°F,psi)

64.0 42.5 44.4

Flammability Nonflammable Nonflammable Nonflammable

Ozone Depletion Coefficient (ODP)

*1

0 0 0.055

Global Warming Coefficient (GWP)

*2

2090 1774 1810

Refrigerant Charging Method Refrigerant charging in

the liquid state

Refrigerant charging in

the liquid state

Refrigerant charging in

the gaseous state

Replenishment of Refrigerant after a Refrigerant
Leak

Available Available Available

Temperature (°C/°F)

Pressure (gauge)

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

[ I Read Before Servicing ]

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HWE1410A GB

[12] 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.

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.

Refrigerant Refrigerating machine oil

R22 Mineral oil

R407C Ester oil

R410A Ester oil

*1. Contaminants is defined as moisture, air, processing oil, dust/dirt, wrong types of refrigerant, and refrigerating machine oil.

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

Infiltration of
contaminants

Dust, dirt

Adhesion to expansion valve and capillary
tubes

Clogged expansion valve, capillary tubes, and
drier
Poor cooling performance
Compressor overheat

Infiltration of contaminants into the com­pressor

Burn-in on the orbiting scroll

Mineral oil
etc.

Sludge formation and adhesion Clogged expansion valve and capillary tubes

Poor cooling performance
Compressor overheat

Oil degradation Burn-in on the orbiting scroll

[ I Read Before Servicing ]

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HWE1410A GB

[13] Water piping

1. Precautions for water piping

Consider the following when installing a water piping system.

(1) Design pressure of the water piping

Use a water pipe that can withstand pressure of at least 1.0 MPa.

(2) Water pipe type

Use of plastic pipe is recommended.Do not use chloride plastic pipes.
When using copper pipes, be sure to braze the pipes under a nitrogen purge. (Oxidation during may shorten the life of the
pump.)

(3) Expansion tank

Install an expansion tank to accommodate expanded water.

(4) Drain piping

Install the drain pipe with a downward inclination of between 1/100 and 1/200. To prevent drain water from freezing in winter,
install the drain pipe as steep an angle as practically possible and minimize the straight line. For cold climate installation, take
an appropriate measure (e.g., drain heater) to prevent the drain water from freezing.

(5) Insulation

Cover the water pipe with insulating materials with the specified thickness or more to prevent thermal loss or condensation
from collecting.

(6) Air vent valve

Install air vent valves to the highest places where air can accumulate.

(7) Maintenance valve

It is recommended to install valves on the inlet/outlet for each HBC controller branch for maintenance.

(8) Water pressure gauge

Install a water pressure gauge to check the charged pressure.

(9) Water pipe connection

When connecting to water pipe, be sure to make the connection in accordance with the relevant local laws and regulations.

[ I Read Before Servicing ]

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HWE1410A GB

2. Notes on corrosion

(1) Water quality

It is important to check the water quality beforehand. See table below (Circulating water/Makeup Water Quality Standards).

(2) Debris in the water

Sand, pebbles, suspended solids, and corrosion products in water can damage the metal pipe and heat exchanger on the
HBC controller and may cause corrosion. When installing, prevent debris from entering the water. If there is debris in the wa­ter, perform debris removal operation after test run by cleaning the strainers inside the HBC controller. (Refer to other sections
for how to perform a test run.)

(3) Connecting pipes made of different materials

Connecting pipes used for HBC controller and indoor unit are copper alloy pipes. If steel pipes are connected tothe pipes, the
contact surface will corrode. Do not use steel pipes to avoid corrosion.

(4) Residual air

Residual air in the pipe results in water pump malfunction, noise, or water pipe corrosion in the water circuit. Ensure air is
purged before use. (Refer to other sections for how to perform air vent operation.)

pH (25°C[77°F])

Electric conductivity

Chloride ion

Sulfate ion

Acid consumption (pH4.8)

Total hardness

Calcium hardness

Ionic silica

Iron

Copper

Sulfide ion

Ammonium ion

Residual chlorine

Free carbon dioxide

Ryzner stability index

Standard items

Reference items

Items

Lower mid-range

temperature water system

7.0 ~ 8.0

30 or less

[300 or less]

50 or less

50 or less

50 or less

70 or less

50 or less

30 or less

1.0 or less

1.0 or less

not to be

detected

0.3 or less

0.25 or less

0.4 or less

–

7.0 ~ 8.0

30 or less

[300 or less]

50 or less

50 or less

50 or less

70 or less

50 or less

30 or less

0.3 or less

0.1 or less

not to be

detected

0.1 or less

0.3 or less

4.0 or less

–

Tendency

Recirculating

water

[68<T<140°F]

[20<T<60°C]

Make-up

water

Corrosive

Scale-

forming

Reference : Guideline of Water Quality for Refrigeration and Air Conditioning
Equipment. (JRA GL02E-1994)

(mg Cl

-

/)

(mg SO

4

2-

/)

(mg CaCO3/)

(mg CaCO3/)

(mg CaCO3/)

(mg SiO2/)

(mg Fe/ )

(mg Cu/ )

(mg S

2-

/)

(mg NH

4

+

/)

(mg Cl/ )

(mg CO2/ )

(mS/m) (25°C[77°F])

(μS/cm) (25°C[77°F])

[ I Read Before Servicing ]

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HWE1410A GB

3. Correction by antifreeze-liquid concentration

In HYBRID CITY MULTI system, antifreeze-liquid should be used to prevent the system from freezing. Refer to the following graphs
for the capacity correction by antifreeze-liquid. Refer to (1) for antifreeze-liquid concentration, (2) and (3) for capacity correction by
antifreeze-liquid concentration.
When adding antifreeze-liquid, be sure to perform the process in accordance with the relevant local laws and regulations.

(1) Antifreeze-liquid concentration

Use propylene glycol solution for antifreeze.
Refer to the following graph to estimate the antifreeze-liquid concentration required for freeze protection.

(2) Capacity correction by antifreeze-liquid concentration (cooling)

(3) Capacity correction by antifreeze-liquid concentration (heating)

010203040506070

Freezing Temperature [

°C

]

0

-5

-10

-15

-20

-25

-30

Antifreeze-liquid concentration [wt%]

01020304050

Ratio of cooling capacit y

1

0.99

0.98

0.97

0.96

0.95

0.94

0.93

0.92

0.91

0.9

Antifreeze-liquid concentration [wt%]

PURY-(E)P200~500YLM-A1,PQRY-P200~500YLM-A

01020304050

Ratio of cooling input

1

0.99

0.98

0.97

0.96

0.95

0.94

0.93

0.92

0.91

0.9

Antifreeze-liquid concentration [wt%]

01020304050

Ratio of heating capacity

1

0.99

0.98

0.97

0.96

0.95

0.94

0.93

0.92

0.91

0.9

Antifreeze-liquid concentration [wt%]

PURY-(E)P200~500YLM-A1,PQRY-P200~500YLM-A

01020304050

Ratio of heating input

1.2

1.18

1.16

1.14

1.12

1.1

1.08

1.06

1.04

1.02

1

Antifreeze-liquid concentration [wt%]

[ I Read Before Servicing ]

- 18 -

HWE1410A GB

- 19 -

HWE1410A GB

II Restrictions

[1] System configuration ....................................................................................................... 21

[2] Switch Settings and Address Settings ............................................................................. 22

[3] An Example of a System to which an MA Remote Controller is connected..................... 24

[4] An Example of a System to which an ME Remote Controller is connected..................... 30

[5] An Example of a System to which both MA Remote Controller and

ME Remote Controller are connected.............................................................................. 32

[6] Restrictions on Pipe Length ............................................................................................. 35

- 20 -

HWE1410A GB

[ II Restrictions ]

- 21 -

HWE1410A GB

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

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.

Outdoor units

(Heat source units)

HBC controller

Sub-HBC

Maximum total capacity

of connectable indoor

units

Maximum number

of connectable in-

door units

Types of connectable

indoor units

(E)P200 CMB-WP108V-GA1,

CMB-WP1016V-GA1

CMB-WP108V-GB1,
CMB-WP1016V-GB1

100 - 300 50 WP15- WP50 models

Indoor units for use with
HBC controller

(E)P250 125 - 375 50

(E)P300 150 - 450 50

(E)P350 175 - 525 50

(E)P400 200 - 600 50

(E)P450 225 - 675 50

(E)P500 250 - 750 50

[ II Restrictions ]

- 22 -

HWE1410A GB

[2] Switch Settings and Address Settings

1. Switch setting

Refer to section "[3] An Example of a System to which an MA Remote Controller is connected - [5] 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.

*1. Turn off the power to all the outdoor units in the same refrigerant circuit.

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

*1

and Indoor units

ATW Booster Unit BU Outdoor units and Booster Unit

Water Hex Unit AU Outdoor units and Water Hex Unit

ME remote controller Main/sub remote

controller

RC Outdoor units

*1

MA remote controller Main/sub remote

controller

MA Indoor units

CITY MULTI outdoor unit (Heat source unit) OC Outdoor units

*1

HBC controller, Sub-HBC HB, HS Outdoor units

*1

, HBC controller, and Sub-

HBC

[ II Restrictions ]

- 23 -

HWE1410A GB

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.

*1. If a given address overlaps any of the addresses that are assigned to other units, use a different, unused address within the setting

range.
*2. To set the outdoor unit address or the auxiliary outdoor unit address to "100," set the rotary switches to "50."
*3. To set the ME remote controller address to "200," set the rotary switches to "00."
*4. Some models of indoor units have two or three control boards.

Assign an address to the No.1, No. 2, and No. 3 control boards so that the No. 2 control board address equals the No. 1 control board

address plus 1, and that the No. 3 control board address equals the No. 1 control board address plus 2.
*5. The outdoor units in the same refrigerant circuit are automatically designated as OC, and OS. They are designated as OC, and OS in

the descending order of capacity (ascending order of address if the capacities are the same).
*6. No address settings are required for units in a system with a single outdoor unit (with some exceptions).

Address setting is required if a sub HBC controller is connected.
*7. If a given address overlaps any of the addresses that are assigned to other units, use a different, unused address within the setting

range.

Unit or controller Sym-

bol

Address
setting
range

Setting method Factory

address

setting

CITY MULTI
indoor unit

Main/sub unit IC 0, 01 to

50

*1 *4 *6*7

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.

00

M-NET
adapter

M-NET con­trol interface

Free Plan
adapter

LOSSNAY, OA processing unit LC 0, 01 to

50

*1 *4 *6*7

Assign an arbitrary but unique address to each of these units
after assigning an address to all indoor units.

00

ATW Booster Unit BU

Water Hex Unit AU

ME remote
controller

Main remote
controller

RC 101 to 150 Add 100 to the smallest address of all the indoor units in the

same group.

101

Sub remote
controller

RC 151 to

200

*3

Add 150 to the smallest address of all the indoor units in the
same group.

MA remote controller MA No address settings required. (The main/sub setting must be made if 2 re-

mote controllers are connected to the system.)

Main

CITY MULTI outdoor unit

(Heat source unit)

OCOS0, 51 to

100

*1 *2

*6*7

Assign an address that equals the lowest address of the in-

door units in the same refrigerant circuit plus 50.

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

00

Auxiliary out­door unit

HBC controller
Sub-HBC

HBHS0, 51 to

100

*1 *2 *6

Assign an address that equals the lowest address of the in-

door units to be connected to the HBC controller or Sub­HBC plus 50.

If a given address overlaps any of the addresses that are as-

signed to the other units, use a different, unused address
within the setting range.

00

System con­troller

Group remote control­ler

GRSC201 to 250 Assign an address that equals the sum of the smallest group

number of the group to be controlled and 200.

201

System remote con­troller

SR
SC

Assign an arbitrary but unique address within the range listed
on the left to each unit.

ON/OFF remotecon­troller

AN
SC

Assign an address that equals the sum of the smallest group
number of the group to be controlled and 200.

Schedule timer (com­patible with M-NET)STSC

Assign an arbitrary but unique address within the range listed
on the left to each unit.

202

Central controller
AG-150A
GB-50ADA
G(B)-50A

TRSC0, 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 "0" to con­trol the K-control unit.

000

LM adapter SC 201 to 250 Assign an arbitrary but unique address within the range listed

on the left to each unit.

247

- 24 -

[ II Restrictions ]

GBHWE1410A

[3] An Example of a System to which an MA Remote Controller is connected

1. System with one outdoor unit (Heat source unit) (automatic address setup for both indoor and outdoor units)
(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) When the number of the connected indoor units is as
shown in the table below, one or more transmission
boosters (sold separately) are required.
To connect two transmission boosters, connect them in
parallel. (Observe the maximum number of connectable
indoor units that are listed in the specifications for each
outdoor unit.)

4) Automatic address setup is not available if start-stop in­put(CN32, CN51, CN41) is used for a group operation of
indoor units.

5) No more than 2 HBC controllers can be connected.
Sub-HBC cannot be connected.

(3) Maximum allowable length

1) Indoor/outdoor transmission line
Maximum distance (1.25mm

2

[AWG16] or larger)
L1 +L2+L3+L4+L5 200m[656ft]
L1 +L2+L3+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

TB5

M1

M2

M1

M2

M1

M2

M1

M2

M1

M2

M1

M2

S

TB

15

12

00

IC

TB5STB

15

12

00

A1 B2

MA

A1 B2

MA

A1 B2

RC

LC

TB5

S

00

IC

TB5

S

12

TB

15

IC

TB5STB

15

12

0000

IC

TB5STB

15

12

00

A1 B2

MA

A1 B2

MA

A1 B2

MA

GroupGroup

GroupGroup

A1 B2

MA

m1

L11

m2

L4 L5

L12 L13

m3

m5

m4

Interlock operation with
the ventilation unit

*1. The figures above show a system to which two
outdoor units are connected, but only a single
outdoor unit can be connected in an HVRF
system.

*1

HB

00

OC

00

TB7

M1 M2

S

TB3

OS

00

TB7

M1 M2 M1 M2 M1 M2

S

TB3

TB02

M1 M2

S

L3L1 L2

Leave the male
connector on
CN41 as it is.
SW2-1 OFF

Leave the male
connector on
CN41 as it is.
SW2-1 OFF

Number of transmission
booster (sold separately) re­quired

1 unit 2 units

When the P200 and P250 mod­els are not included in the con­nected indoor units

27 - 50 units -

When the P200 and P250 mod­els are included in the connect­ed indoor units

21 - 39 units 40 - 50 units

[ II Restrictions ]

25- 25 -

HWE1410A GB

(4) Wiring method

1) Indoor/outdoor transmission line
Daisy-chain terminals M1 and M2 of the terminal block

for indoor-outdoor transmission line (TB3) on the outdoor
units (OC and OS), of the terminal block for indoor-out­door transmission line (TB02) on the HBC controller
(HB), and of 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 and OS 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 and OS), the S terminal of the terminal block
(TB02) on the HBC controller (HB), and the S terminal of
the terminal block (TB5) on the indoor unit (IC) with the
shield 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).
(Non-polarized 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 as a sub controller.

(Refer to the Instruction 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 re­motecontroller. (Non-polarized two-wire)

When performing a group operation of indoor units that

have different functions, "Automatic indoor/outdoor ad­dresssetup" is not available.

4) Switch setting
No address settings required.

(5) Address setting method

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the
same).

Proce-

dures

Unit or controller

Address set-

ting range

Setting method Notes

Factory

setting

1 Indoor unit Main unit IC No settings

required.

- Port number setting is re­quired
To perform a group opera­tion of indoor units that fea­ture different functions, the
automatic IC/OC address
setup function is not avail­able.

00

Sub unit IC

2 LOSSNAY LC No settings

required.

-00

3MA

remote con­troller

Main
remote con­troller

MA No settings

required.

-Main

Sub
remote con­troller

MA Sub

remote con­troller

Settings to be
made with the
Sub/Main
switch

4 Outdoor unit

(Heat source unit)

OCOSNo settings

required.

-00

5 Auxiliary

outdoor unit

HBC
controller

HB No settings

required.

-00

- 26 -

[ II Restrictions ]

GBHWE1410A

2. 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

(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.
(not required if power to the transmission line for centralized control
is supplied from a controller with a power-supply function, such as
GB-50ADA)

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) When the number of the connected indoor units is as shown in the
table below, one or more transmission boosters (sold separately)
are required.
To connect two transmission boosters, connect them in parallel.
(Observe the maximum number of connectable indoor units that are
listed in the specifications for each outdoor unit.)

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
Maximum distance (1.25mm

2

[AWG16] or larger)
L11+L12 200m [656ft]
L21+L22 200m [656ft]

2) Transmission line for centralized control
L31+L32(L21) 200m [656ft]

3) MA remote controller wiring
Same as [3] 1.

4) Maximum line distance via outdoor unit
(1.25mm

2

[AWG16] or larger)

L32+L31+L12(L11) 500m [1640ft]
L32+L22(L21) 500m [1640ft]
L12(L11)+L31+L22(L21) 500m[1640ft]

IC

TB5STB

15

12

01

IC

TB5STB

15

12

02

A1B

2

MA

A1B

2

MA

LC

TB5

S

10

IC

TB5

S

12

TB

15

IC

TB5STB

15

12

0504

LC

TB5

S

09

IC

TB5STB

15

12

07

A1B

2

MA

IC

TB5STB

15

12

08

A1B

2

MA

A1B

2

MA

m3

L31

System controller

ABS

Note1

Note 3

Note 3

L32

OC

To be connected

m2 m1

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 220 - 240V.
Note3 The figures above show a system to which two outdoor units are connected,
but only a single outdoor unit can be connected in an HVRF system.

TB3

TB7

S

51

OS

TB3

TB7

M1 M2 M1 M2

M1 M2

M1 M2

M1 M2

M1 M2

M1 M2 M1M2

M1 M2

M1 M2M1 M2M1 M2

M1 M2

M1 M2

M1 M2M1 M2

M1 M2 M1 M2

S

52

OC

TB3

TB7

S

54

M1 M2

M1 M2

OS

TB3

TB7

S

55

Group

Group

Group

Group Group

Interlock operation with
the ventilation unit

Move the male connector
from CN41 to CN40.

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

Leave the male
connector on
CN41 as it is.
SW2-1 OFF

To be left
unconnected

To be left
unconnected

To be left
unconnected

S

HS

TB02

57

S

HS

TB02

58

S

HB

TB02

53

S

HB

TB02

56

L22

L21

L12

L11

Number of transmission booster
(sold separately) required

1 unit 2 units

When the P200 and P250 models
are not included in the connected
indoor units

27 - 50 units -

When the P200 and P250 models
are included in the connected in­door units

21 - 39 units 40 - 50 units

[ II Restrictions ]

27- 27 -

HWE1410A GB

(4) Wiring method

1) Indoor/outdoor transmission line
Daisy-chain terminals M1 and M2 of the terminal block

for indoor-outdoor transmission line (TB3) on the outdoor
units (OC and OS), of the terminal block for indoor-out­door transmission line (TB02) on the HBC controller
(HB), and of 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 and OS 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 and OS), the S terminal of the terminal block
(TB02) on HB, and the S terminal of the terminal block
(TB5) on the indoor unit (IC) with the shield of the shield­ed cable.

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 and OS) (Note
a) in the same refrigerant circuit. (Note b)
When both of the following conditions are met, move the power
jumper connector on the control board from CN41 to CN40 on
only one of the outdoor units: (1) No power supply units are con­nected to the transmission line for centralized control AND (2)
No controllers with a power-supply function are connected to
the system.
If a system controller is connected, set the central control switch
(SW2-1) on the control board of all outdoor units to "ON."

a) The outdoor units in the same refrigerant circuit are automatical-

ly designated as OC and OS 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).

b) If TB7's on the outdoor units in the same refrigerant circuit are

not daisy-chained, connect the transmission line for the central
control system to TB7 of the OC. (Note a).To maintain the cen­tral control even during an OC failure or a power failure, connect
TB7 on OC and OS together. (If there is a problem with the out­door unit whose power jumper was moved from CN41 to CN40,
central control is not possible, even if TB7's are daisy-chained.)

Only use shielded cables.

Shielded cable connection

Daisy-chain the S terminal of the terminal block (TB7) on the
system controller, OC, and OS with the shield 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 [3] 1.

When 2 remote controllers are connected to the sys­tem

Same as [3] 1.

Group operation of indoor units

Same as [3] 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 two-wire)

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) Address setting method

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the same).

Proce-

dures

Unit or controller

Ad-

dress

setting

range

Setting method Notes

Fac-

tory
set-

ting

1 Indoor

unit

Main unit IC 01 to

50

Assign the smallest address to the mai n unit

in the group.

Port number setting is

required

To perform a group op-

eration of indoor units
that feature different
functions, designate
the indoor unit in the
group with the greatest
number of functions as
the main unit.

00

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.

None of these addresses may
overlap any of the indoor unit
addresses.

00

3MA

remote
controller

Main
remote con­troller

MA

No set­tings re­quired.

-

Make the same indoor unit
group settings with the system
controller as the ones that
were made with the MA remote
controller.

Main

Sub
remote con­troller

MA

Sub
remote
controller

Settings to be made with the Sub/
Main switch

4 Outdoor unit (Note)

(Heat source unit) OCOS

51 to 100 Assign sequential address to the outdoor

units in the same refrigerant circuit.

The outdoor units are automatically desig-

nated as OC and OS.(Note)

To set the address to 100,

set the rotary switches to 50.

If the address that is as-

signed to the HBC controller
and Sub-HBC overlaps any
of the addresses that are as­signed to the other units,
use a different, unused ad­dress within the setting
range.

00

5 Auxiliary

outdoor
unit

HBC con­troller
Sub-HBC

HB
HS

51 to 100 Assign an address that equals the lowest ad-

dress of the indoor units to be connected to
the HBC controller or Sub-HBC plus 50.

- 28 -

[ II Restrictions ]

GBHWE1410A

3. 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.
(not required if power to the transmission line for centralized control
is supplied from a controller with a power-supply function, such as
GB-50ADA)

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 indoor­outdoor transmission line, with the exception that only one G(B)-50A
may be connected.

7) When the total number of indoor units exceeds 20 (12 if one or more
indoor units of the 200 model or above is connected), it may not be
possible to connect a system controller to the indoor-outdoor trans­mission line.

8) When the number of the connected indoor units is as shown in the
table below, one or more transmission boosters (sold separately)
are required.
To connect two transmission boosters, connect them in parallel.
(Observe the maximum number of connectable indoor units that are
listed in the specifications for each outdoor unit.)

(3) Maximum allowable length

1) Indoor/outdoor transmission line
Maximum distance (1.25mm

2

[AWG16] or larger)
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 [3] 1.

4) Maximum line distance via outdoor unit
(1.25mm

2

[AWG16] or larger)
L25+L31+L12(L11) 500m [1640ft]
L12(L11)+L31+L22(L21) 500m [1640ft]

IC

TB5STB

15

12

01

IC

TB5STB

15

12

02

A1B

2

MA

A1B

2

MA

LC

TB5

S

10

IC

TB5

S

12

TB

15

IC

TB5STB

15

12

0504

LC

TB5

S

09

IC

TB5STB

15

12

07

A1B

2

MA

IC

TB5STB

15

12

08

A1B

2

MA

A1B

2

MA

GroupGroupGroup

Group Group

m3

Interlock operation with
the ventilation unit

OC

Connect

m2 m1

Note1 LM adapters cannot be connected to the indoor-outdoor transmission line.
Note2 The figures above show a system to which two outdoor units are connected,

but only a single outdoor unit can be connected in an HVRF system.

TB3

TB7

S

51

OS

TB3

TB7

S

52

OC

TB3

TB7

S

54

OS

TB3

TB7

S

55

L31

M2M1 M2M1

M2M1

M2M1

M2M1

M2M1 M2M1

M2M1 M2M1

M2M1

M2M1

M2M1M2M1

M2M1

M2M1

M2M1

M2M1

M2M1

M2M1

M2M1

Not
Connect

Not
Connect

Not
Connect

CN41 CN40 Replace
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.

SW2-1 OFF ON

Leave the male
connector on
CN41 as it is.

ABS

L25

System controller

Note1

Note2

Note2

S

HS

TB02

57

S

HS

TB02

58

S

HB

TB02

53

S

HB

TB02

56

L22

L21

L12

L11

Number of transmission
booster (sold separately)
required

1 unit 2 units

When the P200 and P250 models are not
included in the connected indoor units

27 - 50
units

-

When the P200 and P250 models are in­cluded in the connected indoor units

21 - 39
units

40 - 50
units

[ II Restrictions ]

29- 29 -

HWE1410A GB

(4) Wiring method

1) Indoor/outdoor transmission line

Daisy-chain terminals M1 and M2 of the terminal block for indoor­outdoor transmission line (TB3) on the outdoor units (OC and OS)
(Note a), of the terminal block for indoor-outdoor transmission line
(TB02) on the main and sub BC controllers (BC and BS), of the ter­minal block for indoor-outdoor transmission line (TB5) on each in­door unit (IC), and the S terminal of the system controller.(Non­polarized two-wire)

Only use shielded cables.

a) The outdoor units in the same refrigerant circuit are automatically

designated as OC and OS 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 and
OS), the S terminal of the terminal block (TB02) on the BC and BS,
and the S terminal of the terminal block (TB5) on the indoor unit (IC)
with the shield 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 and OS in the same re­frigerant circuit.(Note b)
When both of the following conditions are met, move the power
jumper connector on the control board from CN41 to CN40 on only
one of the outdoor units: (1) No power supply units are connected to
the transmission line for centralized control AND (2) No controllers
with a power-supply function are connected to the system.
Set the central control switch (SW2-1) on the control board of all out­door units to "ON."

b) If TB7's on the outdoor units in the same refrigerant circuit are not

daisy-chained, connect the transmission line for the central control
system to TB7 of the OC. (Note a).To maintain the central control
even during an OC failure or a power failure, connect TB7 on OC
and OS together. (If there is a problem with the outdoor unit whose
power jumper was moved from CN41 to CN40, central control is not
possible, even if TB7's are daisy-chained.)

Only use shielded cables.

Shielded cable connection

Daisy-chain the S terminal on the terminal block (TB7) on the out­door units (OC, OS) with the shield wire of the shielded cable. Short­circuit 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 [3] 1.

When 2 remote controllers are connected to the system

Same as [3] 1.

Group operation of indoor units

Same as [3] 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 two-wire)

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.

(5) Address setting method

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the same).

Proce-

dures

Unit or controller

Ad-

dress

setting

range

Setting method Notes

Fac-

tory
set­ting

1 Indoor

unit

Main unit IC 01 to

50

Assign the smallest address to the main unit

in the group.

Port number setting is

required

To perform a group op-

eration of indoor units
that feature different
functions, designate
the indoor unit in the
group with the greatest
number of functions as
the main unit.

00

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.

None of these addresses may
overlap any of the indoor unit
addresses.

00

3MA

remote
controller

Main
remote con­troller

MA

No set­tings re­quired.

-

Make the same indoor unit
group settings with the system
controller as the ones that
were made with the MA remote
controller.

Main

Sub
remote con­troller

MA

Sub
remote
controller

Settings to be made with the Sub/
Main switch

4 Outdoor unit

(Heat source unit) OCOS

51 to 100 Assign sequential address to the outdoor

units in the same refrigerant circuit.

The outdoor units are automatically desig-

nated as OC and OS.(Note)

To set the address to 100,

set the rotary switches to 50.

If the address that is as-

signed to the HBC controller
and Sub-HBC overlaps any
of the addresses that are as­signed to the other units,
use a different, unused ad­dress within the setting
range.

00

5 Auxiliary

outdoor
unit

HBC con­troller
Sub-HBC

HB
HS

51 to 100 Assign an address that equals the lowest ad-

dress of the indoor units to be connected to
the HBC controller or Sub-HBC plus 50.

- 30 -

[ II Restrictions ]

GBHWE1410A

[4] 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 2 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.
(not required if power to the transmission line for centralized
control is supplied from a controller with a power-supply func­tion, such as GB-50ADA)

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) When the number of the connected indoor units is as shown in
the table below, one or more transmission boosters (sold sepa­rately) are required.
To connect two transmission boosters, connect them in parallel.
(Observe the maximum number of connectable indoor units that
are listed in the specifications for each outdoor unit.)

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
Maximum distance (1.25mm

2

[AWG16] or larger)
L11+L12 200m [656ft]
L21+L22 200m [656ft]

2) Transmission line for centralized control
Same as [3] 2.

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 1.25mm2 [AWG16]. The section
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

2

[AWG18-16].

4) Maximum line distance via outdoor unit
(1.25 mm

2

[AWG16] or large)

Same as [3] 2.

IC

TB5STB

15

12

01

IC

TB5STB

15

12

02

LC

TB5

S

10

IC

TB5

S

12

TB

15

IC

TB5STB

15

12

0504

LC

TB5

S

09

IC

TB5STB

15

12

07

IC

TB5STB

15

12

08

A1 B2

RC

101

A1 B2

RC

102

A1 B2

RC

103

Group

Group

Group

Group Group

To be connected

M1M2

M1M2M1M2

M1M2 M1M2 M1M2 M1M2

L31

ABS

L32

OC

m1

TB3

TB7

M1 M2

S

51

OS

TB3

TB7

M1M2

M1M2 M1M2

S

52

OC

TB3

TB7

S

54

OS

TB3

TB7

S

55

To be left
unconnected

Interlock operation with the ventilation unit

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 220 - 240V.

System controller

Note1

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

Move the male connector
from CN41 to CN40.

SW2-1 OFF ON

Leave the male
connector on
CN41 as it is.

M1M2

M1M2 M1M2

M1M2 M1M2

To be left
unconnected

To be left
unconnected

Note

3 The figures above show a system to which two outdoor units are connected,

but only a single outdoor unit can be connected in an HVRF system.

Note3

Note3

104

A1 B2

RC

154

A1 B2

RC

m3

106

A1 B2

RC

m2

S

HS

TB02

57

S

HS

TB02

58

L12

L11

L22

L21

M1M2

M1M2

S

HB

TB02

53

S

HB

TB02

56

M1M2

M1M2

Number of transmission
booster (sold separately)
required

1 unit 2 units 3 units

When the P200 and P250 models are not
included in the connected indoor units

15 - 34
units

35 - 50

units

-

When the P200 and P250 models are in­cluded in the connected indoor units

11 - 26
units

27 - 42
units

43 - 50
units

[ II Restrictions ]

31- 31 -

HWE1410A GB

(4) Wiring method

1) Indoor/outdoor transmission line
Same as [3] 2.

Shielded cable connection

Same as [3] 2.

2) Transmission line for centralized control
Same as [3] 2.

Shielded cable connection

Same as [3] 2.

3) ME remote controller wiring
ME remote controller is connectable anywhere on the in-

door-outdoor transmission line.

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 [3] 2.

5) Switch setting
Address setting is required as follows.

(5) Address setting method

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the
same).

Proce-

dures

Unit or controller

Ad-

dress

setting

range

Setting method Notes

Fac-

tory
set­ting

1 Indoor

unit

Main unit IC 01 to

50

Assign the smallest address to the main unit

in the group.

Port number setting is

required

To perform a group op-

eration of indoor units
that have different func­tions, set the indoor unit
in the group with the
greatest number of
functions as the main
unit.

00

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.

None of these addresses may
overlap any of the indoor unit
addresses.

00

3ME

remote
controller

Main
remote con­troller

RC 101 to

150

Add 100 to the main unit address in
the group

It is not necessary to set the

100s digit.

To set the address to 200,

set the rotary switches to 00.

101

Sub
remote con­troller

RC 151 to

200

Add 150 to the main unit address in
the group

4 Outdoor unit

(Heat source unit) OCOS

51 to 100 Assign sequential address to the outdoor

units in the same refrigerant circuit.

The outdoor units are automatically desig-

nated as OC and OS.(Note)

To set the address to 100,

set the rotary switches to 50.

If the address that is as-

signed to the HBC controller
and Sub-HBC overlaps any
of the addresses that are as­signed to the other units,
use a different, unused ad­dress within the setting
range.

00

5 Auxiliary

outdoor
unit

HBC con­troller
Sub-HBC

HB
HS

51 to 100 Assign an address that equals the lowest ad-

dress of the indoor units to be connected to
the HBC controller or Sub-HBC plus 50.

- 32 -

[ II Restrictions ]

GBHWE1410A

[5] An Example of a System to which both MA Remote Controller and ME Remote Controller are connected

(1) Sample control wiring

(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.
(not required if power to the transmission line for centralized control
is supplied from a controller with a power-supply function, such as
GB-50ADA)

8) Provide an electrical path to grou nd for the S terminal on the terminal
block for centralized control on only one of the outdoor units.

9) When the number of the connected indoor units is as shown in the
table below, one or more transmission boosters (sold separately)
are required.
To connect two transmission boosters, connect them in parallel.
(Observe the maximum number of connectable indoor units that are
listed in the specifications for each outdoor unit.)

10) 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).

IC

TB5STB

15

12

01

IC

TB5STB

15

12

02

IC

TB5STB

15

12

07

107

IC

TB5STB

15

12

09

A1 B2

MA

A1 B2

RC

A1 B2

MA

IC

TB5

S

12

TB

15

IC

TB5STB

15

12

0804

108

A1 B2

RC

OC

TB3

TB7

S

51

OS

TB3

TB7

S

52

OC

TB3

TB7

S

54

OS

TB3

TB7

S

55

L31

ABS

L32

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.

To be left
unconnected

To be left
unconnected

To be left
unconnected

To be connected

System controller

Note1

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 220 - 240V.

Note3 The figures above show a system to which two outdoor units are connected,

but only a single outdoor unit can be connected in an HVRF system.

M1M2

M1M2

M1M2

M1M2

M1M2 M1M2 M1M2

M1M2M1 M2M1M2

M1 M2M1 M2M1 M2M1 M2

M1 M2M1 M2

Note3

Note3

S

HS

TB02

57

S

HS

TB02

58

L22

L21

L12

L11

SW2-1 OFF ON

Leave the male
connector on
CN41 as it is.

SW2-1 OFF ON

Move the male connector
from CN41 to CN40.

Group Group

GroupGroup

M1M2

S

HB

TB02

53

S

HB

TB02

56

M1M2

Number of transmission booster
(sold separately) required

1 unit 2 units 3 units

When the P200 and P250 mod­els are not included in the con­nected indoor units

15 - 34
units

35 - 50

units

-

When the P200and P250 models
are included in the connected in­door units

11 - 26
units

27 - 42
units

43 - 50
units

[ II Restrictions ]

33- 33 -

HWE1410A GB

(3) Maximum allowable length

1) Indoor/outdoor transmission line
Same as [3] 2.

2) Transmission line for centralized control
Same as [3] 2.

3) MA remote controller wiring
Same as [3] 1.

4) ME remote controller wiring
Same as [4]

5) Maximum line distance via outdoor unit
(1.25 mm

2

or larger)

Same as [3] 2.

(4) Wiring method

1) Indoor/outdoor transmission line
Same as [3] 2.

Shielded cable connection

Same as [3] 2.

2) Transmission line for centralized control
Same as [3] 2.

Shielded cable connection

Same as [3] 2.

3) MA remote controller wiring

(When 2 remote controllers are connected to the sys­tem

Group operation of indoor units)

Same as [3] 1.

4) ME remote controller wiring

(When 2 remote controllers are connected to the sys­tem

Group operation of indoor units)

Same as [4]

5) LOSSNAY connection
Same as [3] 2.

6) Switch setting
Address setting is required as follows.

- 34 -

[ II Restrictions ]

GBHWE1410A

(5) Address setting method

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
They are designated as OC and OS in the descending order of capacity (ascending order of address if the capacities are the same).

Pro-

ce-

dure

s

Unit or controller

Ad-

dress

set-

ting

range

Setting method Notes

Facto­ry set-

ting

1 Opera-

tion with
the
MA re­mote
controller

In­door
unit

Main
unit

IC 01 to

50

Assign the smallest address to

the main unit in the group.

Assign an address smaller than that of

the indoor unit that is connected to the
ME remote controller.

Enter the same indoor unit group set-

tings 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.

Port number setting is required.

00

Sub
unit

IC 01 to

50

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.)

MA
re­mote
con­troller

Main re­mote
control­ler

MA

No
set­tings re­quired.

-

Main

Sub
remote
control­ler

MA

Sub
remote
control­ler

Settings to be made according
to the remote controller func­tion selection

2 Opera-

tion with
the
ME re­mote
controller

In­door
unit

Main
unit

IC 01 to 50Assign the smallest address

to the main unit in the group.

Assign an address higher than those of

the indoor units that are connected to
the MA remote controller.

Make the initial settings for the indoor

unit group settings via the system 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.

Port number setting is required.
Addresses that are assigned to the in-

door units that are connected to t he sub
BC controller should be higher than the
addresses that are assigned to the in­door units that are connected to the
main BC controller.

00

Sub
unit

IC 01 to

50

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.)

ME
re­mote
con­troller

Main re­mote
control­ler

RC 101 to

150

Add 100 to the main unit ad­dress in the group.

It is not necessary to set the 100s

digit.

To set the address to 200, set it to

00.

101

Sub
remote
control­ler

RC 151 to

200

Add 150 to the main unit ad­dress in the group.

3 LOSSNAY LC 01 to

50

Assign an arbitrary but unique
address to each of these units
after assigning an address to
all indoor units.

None of these addresses may over­lap any of the indoor unit addresses.

00

4 Outdoor unit

(Heat source unit)

OCOS51 to

100

Assign sequential address to the

outdoor units in the same refrig­erant circuit.

The outdoor units are automati-

cally designated as OC and
OS.(Note)

To set the address to 100, set it to 50.
If the address that is assigned to the

HBC controller and Sub-HBC overlaps
any of the addresses that are assigned
to the other units, use a different, un­used address within the setting range.

00

5 Auxiliary

outdoor
unit

HBC controller
Sub-HBC

HBHS51 to

100

Assign an address that equals
the lowest address of the in­door units to be connected to
the HBC controller or Sub­HBC plus 50.

[ II Restrictions ]

- 35 -

HWE1410A GB

[6] Restrictions on Pipe Length

(J)

(D)

(D)(D)

(D)

(D)

(A)

(B)

(I)

(G)

(K)

(L)

(C)

(H)

(F)(E)

A

c

de

b

a

h1

h2

f

g

H1H

(A) Outdoor unit (~(E)P350)
(B) Main-HBC controller (C) Sub-HBC controller (D) In door unit
(E) Less than H=50 m (when the outdoor u nit is higher than HBC)
(F) Less than H1=40 m (when the outdoor unit is lower than HBC)
(G) Twinning pipe (field supply)
(H) Less than 110 m (I) Less than 60 m
(J) Up to three units for 1 branch port

Total capacity: less than 80 (but in same mode, cooling/heating)

(K) Less than 15 m (L) Less than 15 m

CMB-WP108V-GA1 + CMB-WP108V-GB1

(

CMB-WP1016V-GA1

) (

CMB-WP1016V-GB1

)

(Unit: m)

Item Piping portion Allowable value

Between outdoor unit and
HBC controller (refrigerant pipework)

A110 or less

Water pipework between indoor units
and HBC controller

f + g 60 or less

H 50 or less

Between
HBC and
outdoor units
(Heat source units)

Outdoor unit above HBC

Outdoor unit below HBC

H1 40 or less

Between indoor units and HBC controller h1

2hstinu roodni neewteB

Pipe Lengths

Difference of elevation

Note:1.

Indoor units that are connected to the same branch joint cannot be si­multaneously operated in different operation modes.

15(10) or less*1

15(10) or less*1

*1. Values in ( ) are applied when indoor total capacity exceeds 130% of outdoor

unit capacity

(Heat source unit)

(C)

(J)

(D)

(A)

(B1)

(B2)

(H)

(I)

(G)

(K)

(L)

(D) (D) (D)

(D)

(M)

(D)

(F)(E)

(G)

A1

A2

A3

c

de

f

b

a

h1

h2

g

h3

H1H

B

(A) Outdoor unit ((E)P300~)
(B1), (B2)

Main-HBC controller

(C) Sub-HBC controller

Total indoor units capacity: P375 or less

Total indoor units capacity (B2)+(C): P375 or less
(D) Indoor unit
(E) Less than H=5 0 m (when the outdoor unit is higher than HBC)
(F) Less than H1=40 m (when the outdoor unit is lower than HBC)
(G) Twinning pipe (field supply)

(H) Less than 110 m

(I) Less than 60 m

(J) Up to three units for 1 branch port

Total capacity: less than 80 (but in same mode, cooling/heating)
(K) Less than 15 m (L) Less than 15 m

(M) Less than 15 m

CMB-WP108V-GA1 + CMB-WP108V-GB1

(

CMB-WP1016V-GA1

) (

CMB-WP1016V-GB1

)

(Unit: m)

Item Piping portion Allowable value

Between outdoor unit and
HBC controller (refrigerant pipework)

A1 + A2 + A3 110 or less

Water pipework between indoor units
and HBC controller

f + g 60 or less

ssel ro 04Bsrellortnoc CBH neewteB

Outdoor unit above HBC

H50 or less

Outdoor unit below HBC

H1 40 or less

Between indoor units and HBC controller h1

2hstinu roodni neewteB

3hsrellortnoc CBH neewteB

Pipe Lengths

Difference of elevation

15(10) or less*1

15(10) or less*1

15(10) or less*1

*1. Values in ( ) are applied when indoor total capacity exceeds 130% of outdoor

unit capacity

Between
HBC and
outdoor units
(Heat source units)

(Heat source unit)

[ II Restrictions ]

- 36 -

HWE1410A GB

1. Refrigerant and water pipe size
(1) Refrigerant pipe between outdoor unit and HBC controller (Part A, A1, A2, and A3)

(2) Water pipe between HBC controller and indoor units (Sections a, b, c, d, e, and g)

*Water Pipe size between HBC controller and joint is also 20A.

(3) Water pipe between HBC controller and Sub-HBC

(4) Refrigerant pipe between HBC controller and HBC controller

2. Connecting the HBC controller
(1) Size of the pipe that fits the standard HBC controller ports

Unit : mm [inch]

Indoor unit Inlet pipe size Outlet pipe size

P15 - P50 20A 20A

Unit : mm [inch]

Inlet pipe size Outlet pipe size

Cold-water side ø25.4[I.D. 1"] ø25.4[I.D. 1"]

Hot-water side ø25.4[I.D. 1"] ø25.4[I.D. 1"]

Unit : mm [inch]

ø15.88 [5/8"] (Brazed connection)

1) To connect multiple indoor units to a port

Maximum total capacity of connected indoor units: P80 or below
Maximum number of connectable indoor units: 3 units
Branch joints are field-supplied.
All the indoor units that are connected to the same port must be in the same group and Thermo-ON/OFF opera-

tion simultaneously. For all the indoor units in the group, the room temperature needs to be monitored via the
connected remote controller.

HBC CONTROLLER

Unit model Model name

Use of one HBC controller

Use of two HBC controllers

High pressure side Low pressure side

(E)P200

(HBC CONTROLLER)
CMB-WP108V-GA1
CMB-WP1016V-GA1
*1

ø19.05 (Brazing)

ø22.2 (Brazing)052P)E(

ø22.2 (Brazing)003P)E(

ø28.58 (Brazing)

ø15.88 (Brazing)

ø19.05 (Brazing)

ø19.05 (Brazing)

ø19.05 (Brazing)053P)E(

Outdoor

(Heat source)

unit side

Outdoor

(Heat source)

unit side

Unit model Model name

High pressure side

Between outdoor unit and twining pipe Between twining pipe and HBC

Low pressure side

(HBC CONTROLLER)
CMB-WP108V-GA1
CMB-WP1016V-GA1
*1

ø22.2 (Brazing)003P)E(

ø28.58 (Brazing)053P)E(

ø28.58 (Brazing)

ø28.58 (Brazing)

ø28.58 (Brazing)

High pressure side
ø15.88 (Brazing) for each HBC

ø15.88 (Brazing) for each HBC

ø15.88 (Brazing) for each HBC

ø19.05 (Brazing) for each HBC

ø19.05 (Brazing) for each HBC

Low pressure side

ø19.05 (Brazing) for each HBC

ø19.05 (Brazing) for each HBC

ø19.05 (Brazing) for each HBC

ø22.2 (Brazing) for each HBC

ø22.2 (Brazing) for each HBC

ø19.05 (Brazing)

ø19.05 (Brazing)

ø22.2 (Brazing)

ø22.2 (Brazing)

ø22.2 (Brazing)

004P)E(

054P)E(

005P)E(

HBC CONTROLLER

*1. (E)P-400 model or larger requires a connection of two main-HBC controllers in parallel.

(E) (E) (E) (E) (E) (E) (E)(E)

(G)

(A)

(B)

(F)

*1

(C) (D)

(A) To outdoor unit
(B) End connection (brazing)
(C) Main-HBC controller
(D) Sub-HBC controller
(E) Indoor unit
(F) Twinning pipe (field supply)
(G) Up to three units for 1 branch hole; total capacity: below 80 (but same in cooling/heating mode)

(Heat source unit)

- 37 -

HWE1410A GB

III HBC Controller Components

[1] HBC Controller Components ........................................................................................... 39

[2] Sub-HBC Components .................................................................................................... 42

[3] Control Box of the HBC Controller and Sub-HBC............................................................ 44

[4] HBC Controller and Sub-HBC Circuit Board.................................................................... 45

- 38 -

HWE1410A GB

[ III HBC Controller Components ]

- 39 -

HWE1410A GB

III HBC Controller Components

[1] HBC Controller Components

1. Front
(1) CMB-WP1016V-GA1

(2) CMB-WP108V-GA1

From Main HBC

Expansion Vessel

Water inlet

Drain

High pressure pipe

To Sub-HBC (Hot water)

To Sub-HBC (Cold water)

From Sub-HBC (Hot water)

From Sub-HBC (Cold water)

Low pressure pipe

From Main HBC

Expansion Vessel

Water inlet

Drain

High pressure pipe

To Sub-HBC (Hot water)

To Sub-HBC (Cold water)

From Sub-HBC (Hot water)

From Sub-HBC (Cold water)

Low pressure pipe

[ III HBC Controller Components ]

- 40 -

HWE1410A GB

2. Rear right side (cooling)

3. Rear left side (heating)

Strainer

Pump 2

SVM1

LEV3

LEV1

LEV2

21S4Ma

21S4Mb

Cooling plate heat exchnger

PS3

Water purge valve

Air purge valve

Heating plate
heat exchnger

Water pressure
protection valve

PS1

Strainer

Pump1

Air purge valve

[ III HBC Controller Components ]

- 41 -

HWE1410A GB

4. Top side
(1) CMB-WP1016V-GA1

(2) CMB-WP108V-GA1

VB3f

VB3e

[ III HBC Controller Components ]

- 42 -

HWE1410A GB

[2] Sub-HBC Components

1. Front
(1) CMB-WP1016V-GB1

(2) CMB-WP108V-GB1

To Main_HBC (Hot water)

To Main_HBC (Cold water)

From Main_HBC (Cold water)

From Main_HBC (Hot water)

To Main_HBC (Hot water)

To Main_HBC (Cold water)

From Main_HBC (Cold water)

From Main_HBC (Hot water)

[ III HBC Controller Components ]

- 43 -

HWE1410A GB

2. Top side
(1) CMB-WP1016V-GB1

(2) CMB-WP108V-GB1

VB3f

VB3e

[ III HBC Controller Components ]

- 44 -

HWE1410A GB

[3] Control Box of the HBC Controller and Sub-HBC

1. CMB-WP108V, WP1016V-GA1, CMB-WP108, WP1016V-GB1

HBC controller board

Terminal block for

transmission line

Power supply circuit board

Terminal block for
power supply

AC reactor (ACL)

[ III HBC Controller Components ]

- 45 -

HWE1410A GB

[4] HBC Controller and Sub-HBC Circuit Board

1. HBC controller and Sub-HBC circuit board

SW1SW2

SW3

SW4

SW5

[ III HBC Controller Components ]

- 46 -

HWE1410A GB

2. Power supply circuit board

- 47 -

HWE1410A GB

IV Electrical Wiring Diagram

[1] Electrical Wiring Diagram of the HBC Controller and Sub-HBC ...................................... 49

[2] Electrical Wiring Diagram of Transmission Booster......................................................... 57

- 48 -

HWE1410A GB

[ IV Electrical Wiring Diagram ]

- 49 -

HWE1410A GB

IV Electrical Wiring Diagram

[1] Electrical Wiring Diagram of the HBC Controller and Sub-HBC

(1) CMB-WP108V-GA1

DSA001

(Blue)

(Yellow) (Green)

(Red)

(Green)

(Green)

(Blue)

(Blue)

(Yellow)

(Red)

(Red)

(Blue)

(Red) (Red)

(Red)

(Red)

F001

250VAC

6.3A F

TO NEXT INDOOR UNIT

PULL BOX

FUSE(16A)

BREAKER(16A)

POWER SUPPLY

~

220V

–

240V

50Hz/60Hz

Indoor/outdoor

M

M

M

UU

SV1

21S4Mb 21S4Ma

ZNR001

L001

ZNR002

C004 C006

C003 C005

C002 C007

LEV1

LEV2

LEV3

WP1

WP2

PS1PS3

FS

TH12

TH11

TH31c

TH31b

TH31a

TH31f

TH31d

TH13

TH14

TH31e

TH31h

TH31g

TH34

TH35

TH16

TH33

TH15

TH32

S(SHIELD)

TB02

M2

M1

CNLEV1 CNLEV2 CNLEV3

CN005

CNAC

CN002

CN001

CN001

CN002

CN006

CN203

CN204

CN401

CN103

CN101

CN518

CN512CN513

CN201 CN003

CN101

CN003

CN501

CN502(Red)

CN504(Yellow)

CN506(Blue)

CN505

CN510

CN503(Blue)

CN508(Red)

CN509(Blue)

CN511(Red)

TB01

Transmission Line

Control Board

Power Board

t°t

°

t°t

°

t°t

°

t°t

°

t

°

t

°

t°t

°

t°t

°

t°t°t°t

°

ACL

32 12311456

1122335577

99

X006

1

3

X002

X003

653

1

123456172

1

355371

666

555

444

333222

111

N

L

X(See next page for the details)

11

1010

11

123

232456

3

1

18

765432 211

1

10

123

1234

12345

LED1

SW1SW2

SWP2SWP1 SWP3

ON

OFF

SW3

SW4

SW5

ON

OFF

ON

OFF

123451234123412345671234567

11

22

33

44

55

66

1

223344556

6

1

[ IV Electrical Wiring Diagram ]

- 50 -

HWE1410A GB

(2) CMB-WP108V-GA1 (Detail of X section)

(Red)(Red) (Yellow)(Yellow)

(Red) (Red) (Yellow) (Yellow)

(Red) (Red)

MMMMMMMM

CN202 CN201

CN203CN204 CN205CN206

CN207CN208

CN210 CN209 CN212 CN211

CN214 CN213

CN216 CN215

VB3a VB3b VB3c VB3d VB3e VB3f VB3g VB3h

operation operation operation operation operation operation operation operation

LEV1~3

TH11~16,TH32~35,

TH31a~h

ACL

PS1,PS3

Pressure sensor

AC reactor

Thermister sensor

Expansion valve

Terminal block

(for power source)

Terminal block

(for Transmission)

Fuse AC250V 6.3A F

F001

Solenoid valveSV1

21S4Ma,21S4Mb 4 way valve

WP1,WP2

Pump

VB3a~h

Valve block

FS

Float switch

LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in

Symbol

(Symbol explanation)

Name

TB01

TB02

NOTE:1.TB02 is transmission terminal block.

Never connect power line to it.

2.The initial set values of switch on
Control Board are as follows.

SW1:0

SW2:0

Name

Symbol

32132145 43213215 4321321543213215 432132154321

3
2
1

54321321543213215

[ IV Electrical Wiring Diagram ]

- 51 -

HWE1410A GB

(3) CMB-WP1016V-GA1

DSA001

(Blue)

(Yellow) (Green)

(Red)

(Green)

(Green)

(Blue)

(Blue)

(Blue)

(Yellow)

(Red)

(Red)

(Blue)

(Red) (Red)

(Red)

(Red)

(Red)

F001

250VAC

6.3A F

TO NEXT INDOOR UNIT

PULL BOX

FUSE(16A)

BREAKER(16A)

POWER SUPPLY

~

220V–240V

50Hz/60Hz

Indoor/outdoor

M

M

M

UU

SV1

21S4Mb 21S4Ma

ZNR001

L001

ZNR002

C004 C006

C003 C005

C002 C007

LEV1

LEV2

LEV3

WP1

WP2

PS1PS3

FS

Z

TH12

TH11

TH31c

TH31m

TH31b

TH31a

TH31f

TH31d

TH31n

TH13

TH31p

TH14

TH31o

TH31e

TH31h

TH31g

TH34

TH31i

TH31j

TH35

TH31k

TH31l

TH16

TH33

TH15

TH32

S(SHIELD)

TB02

M2

M1

CNLEV1 CNLEV2 CNLEV3

CN005

CNAC

CN002

CN001

CN001

CN002

CN006

CN203

CN204

CN401

CN103

CN101

CN518

CN507

CN512

CN515

CN516

CN513

CN514

CN201

CN003

CN101

CN003

CN501

CN502(Red)

CN504(Yellow)

CN506(Blue)

CN505

CN510

CN503(Blue)

CN508(Red)

CN509(Blue)

CN511(Red)

TB01

1

Power Board

3

1

11232456

123

SWP2SWP1 SWP3

1

ON

OFF

1

OFF

ON

1

OFF

ON

SW3

1010

SW4

8

SW5

765432 211

Transmission Line

123

12345

1234

10

LED1

SW1SW2

123

Control Board

3121123456

12357

9

12357

9

X002

X006

X003

1

3

653

1

12

1

355371

1234567

ACL

N

L

666

555

444

333222

111

X(See next page for the details)

1

1

11

2

2

2

2

2

3

3

3

3

3

4

4

4

4

4

5

5

5

5

5

6

6

6

6

7

6

1

112233

234

t°

t°

t°t°t°

t°

t°

t°

t°

t°t°t°t°t°

t°

t°

t°

t°

t°t°t°

t°t°t°

t°

t°

1

1

1

1

1

2

2

2

2

3

3

3

3

4

4

4

455

6

7

[ IV Electrical Wiring Diagram ]

- 52 -

HWE1410A GB

(4) CMB-WP1016V-GA1 (Detail of X section)

(Red)(Red)

(Yellow)

(Yellow)

(Red) (Red)

(Yellow) (Yellow)

MM MMMMMMMMMMM MMM

CN202 CN201

CN203CN204

CN205CN206

CN801

CN802(Red)

CN803(Yellow) CN806(Yellow)

CN805(Red)

CN804

CN207CN208

CN210 CN209

CN212 CN211

CN214

CN216

CN218

CN215

CN217

VB3k VB3a VB3bVB3l VB3cVB3m VB3dVB3n VB3eVB3o VB3fVB3p VB3g VB3jVB3h VB3i

operation

operation operation

operation operation

operation operation

operation operation

operation

operation

operation operation operation operation operation

(Symbol explanation)

LEV1~3

TH11

~

16,TH32

~

35,

TH31a~p

ACL

PS1,PS3

Pressure sensor

Symbol

Name

AC reactor

Thermister sensor

Expansion valve

TB01

Terminal block

(for power source)

TB02

Terminal block

(for Transmission)

Fuse AC250V 6.3A F

F001

Solenoid valve

SV1

21S4Ma,21S4Mb

4 way valve

WP1,WP2

Pump

Name

Symbol

VB3a

~p

Valve block

Z

FS

Function setting connector

Float switch

(Red)

(Yellow)

(Red)

(Yellow)

CN220CN213 CN219

87654321 87654321 8765432187654321 8765432187654321

32132145 43213215 4321321543213215 14321321543213215

LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in

LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in

4321325 4 43322113322115543213215

LD1:CPU inLD1:CPU in LD1:CPU in

NOTE:1.TB02 is transmission terminal block.

Never connect power line to it.

2.The initial set values of switch on

Control Board are as follows.

SW2:0

SW1:0

[ IV Electrical Wiring Diagram ]

- 53 -

HWE1410A GB

(5) CMB-WP108V-GB1

X(See next page for the details)

DSA001

(Red)

(Green)

(Green)

(Red)

(Blue)

(Red)

F001

250VAC

6.3A F

TO NEXT INDOOR UNIT

PULL BOX

FUSE(16A)

BREAKER(16A)

POWER SUPPLY

~220V–240V

50Hz/60Hz

Indoor/outdoor

Transmission Line

UU

ZNR001

L001

ZNR002

C004 C006

C003 C005

C002 C007

FS

TH31c

TH31b

TH31a

TH31f

TH31d

TH31e

TH31h

TH31g

TH33

TH32

S(SHIELD)

TB02

M2

M1

CN005

CNAC

CN002

CN001

CN401

CN103

CN101

CN518

CN101

CN504(Yellow)

CN510

CN503(Blue)

CN508(Red)

CN509(Blue)

N

TB01

L

t

°

t°t

°

t

°

t

°

t°t°t

°

t°t

°

Control Board

Power Board

1

1

1

2

2

2

3

3

3

4

4

4

5

1

10

1234

11

1

1010

8

21

12

3

1

LED1

SW1SW2

SWP2SWP1 SWP3

ON

OFF

OFF

ON

OFF

ON

SW3

SW4

SW5

11

22

33

44

55

66

12

531

1

357

3211

[ IV Electrical Wiring Diagram ]

- 54 -

HWE1410A GB

(6) CMB-WP108V-GB1 (Detail of X section)

(Red)(Red) (Yellow)(Yellow) (Red) (Red) (Yellow) (Yellow) (Red) (Red)

MMMMMMMM

CN202 CN201

CN203CN204

CN205CN206

CN207CN208

CN210 CN209 CN212 CN211

CN214 CN213

CN216 CN215

VB3a VB3b VB3c VB3d VB3e VB3f VB3g VB3h

LD1:CPU in

operation

LD1:CPU in

operation

LD1:CPU in

operation

LD1:CPU in

operation

LD1:CPU in

operation

LD1:CPU in

operation

LD1:CPU in

operation

LD1:CPU in

operation

TH31a~h,TH32,TH33 Thermister sensor

Terminal block

(for power source)

Terminal block

(for Transmission)

Fuse AC250V 6.3A F

F001

VB3a~h

Valve block

FS

Float switch

(Symbol explanation)

TB01

TB02

Symbol

Name

NOTE:1.TB02 is transmission terminal block.

Never connect power line to it.

2.The initial set values of switch on

Control Board are as follows.

SW1:0

SW2:0

32132145 43213215 4321321543213215 43213215432132154321321543213215

[ IV Electrical Wiring Diagram ]

- 55 -

HWE1410A GB

(7) CMB-WP1016V-GB1

DSA001

(Red)

(Green)

(Green)

(Blue)

(Red)

(Blue)

(Red)

(Red)

F001

250VAC

6.3A F

TO NEXT INDOOR UNIT

PULL BOX

FUSE(16A)

BREAKER(16A)

POWER SUPPLY

~220V–240V

50Hz/60Hz

Indoor/outdoor

ZNR001

L001

ZNR002

C004 C006

C003 C005

C002 C007

FS

Z

TH31c

TH31m

TH31b

TH31a

TH31f

TH31d

TH31n

TH31p

TH31o

TH31e

TH31h

TH31g

TH31i

TH31j

TH31k

TH31l

TH33

TH32

S(SHIELD)

TB02

M2

M1

CN005

CNAC

CN002

CN001

CN401

CN103

CN101

CN518

CN507

CN515

CN516

CN514

CN101

CN504(Yellow)

CN506(Blue)

CN505

CN510

CN503(Blue)

CN508(Red)

CN509(Blue)

TB01

UU

t°t

°

t°t

°

t°t

°

t°t

°

t°t

°

t°t

°

t

°

t

°

t

°

t°t°t

°

Transmission Line

Control Board

Power Board

123412341234567123456

7

11

22

33

44

55

66

1234

12345

3211

12

1

355371

11

10

2

1

1

2

3

1

10

18

SWP2SWP1 SWP3

ON

OFF

OFF

ON

OFF

ON

SW3

SW4

SW5

LED1

1

10

SW1SW2

123

1

112233

234

N

L

X(See next page for the details)

[ IV Electrical Wiring Diagram ]

- 56 -

HWE1410A GB

(8) CMB-WP1016V-GB1 (Detail of X section)

(Red)(Red) (Yellow)(Yellow) (Red) (Red) (Yellow) (Yellow) (Red) (Yellow)(Red) (Yellow)

MM MMMMMMMMMMM MMM

CN202 CN201

CN203CN204 CN205CN206

CN801

CN802(Red)

CN803(Yellow) CN806(Yellow)

CN805(Red)

CN804

CN207CN208

CN210 CN209 CN212 CN211

CN214 CN220CN213 CN219

CN216 CN218CN215 CN217

VB3k VB3a VB3bVB3l VB3cVB3m VB3dVB3n VB3eVB3o VB3fVB3p VB3g VB3jVB3h VB3i

operation

operation operation

operation operation

operation operation

operation operation

operation

operation

operation operation operation operation operation

TH31a~p,TH32,TH33

Thermister sensor

Terminal block

(for power source)

Terminal block

(for Transmission)

Fuse AC250V 6.3A FF001

VB3a~p Valve block

Z

TB02

TB01

FS

Function setting connector

Float switch

(Symbol explanation)

Symbol

Name

NOTE:1.TB02 is transmission terminal block.

Never connect power line to it.

2.The initial set values of switch on

Control Board are as follows.

SW1:0

SW2:0

87654321 87654321 8765432187654321 8765432187654321

32132145 43213215 4321321543213215 43213215432132154321321543213215

43213215 43213215

LD1:CPU in LD1:CPU in LD1:CPU inLD1:CPU in LD1:CPU in

LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in

LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in LD1:CPU in

[ IV Electrical Wiring Diagram ]

- 57 -

HWE1410A GB

[2] Electrical Wiring Diagram of Transmission Booster

220 - 240VAC

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

[ IV Electrical Wiring Diagram ]

- 58 -

HWE1410A GB

- 59 -

HWE1410A GB

V Refrigerant Circuit

[1] Refrigerant Circuit Diagram ............................................................................................. 61

[2] Principal Parts and Functions .......................................................................................... 64

- 60 -

HWE1410A GB

[ V Refrigerant Circuit ]

- 61 -

HWE1410A GB

V Refrigerant Circuit

[1] Refrigerant Circuit Diagram

1. HBC controller
(1) CMB-WP108V-GA1

HBC refrigerant system

LEV1

LEV2

SV1

HIC

T13

T15

T16

LEV3

PS1

T12

T11

T14

M

Water

Water

Water

Water

PS

Heating-main

heat exchanger

T33

T32

HBC water system

Water pump WP1

T35

T34

Water pump WP2

T31a

T31b

T31d

T31e

T31f

T31h

Air purge valves

Water purge

valve

Expansion

tank

Water

supply

Refrigerant

Refrigerant

Refrigerant

Refrigerant

Water pressure

protection valves

M

Air purge valves

VB1a

VB1b

VB1h

VB1e

VB1f

VB1h

Port No.1

~No.4

Port No.5

~No.8

The port for connecting multiple HBC controllers is

capped closed at factory shipment.

To Sub-HBC

PS

PS3

Strainer

Strainer

S

S

S

21S4Ma

21S4Mb

M

M

M

M

M

High-

pressure

pipe

Low-

pressure

pipe

Cooling-main

heat exchanger

[ V Refrigerant Circuit ]

- 62 -

HWE1410A GB

(2) CMB-WP1016V-GA1

HBC refrigerant system

LEV1

LEV2

SV1

HIC

T13

T15

T16

LEV3

PS1

T12

T11

T14

M

Water Water

Water Water

PS

Cooling-main

heat exchanger

Heating-main

heat exchanger

T33

T32

HBC water system

Water pump WP1

Water pump WP2

T35

T34

T31a

T31b

T31h

T31i

T31j

T31p

Air purge valves

Water purge

valve

Expansion

tank

Water

supply

Refrigerant

Refrigerant

Refrigerant

Refrigerant

Water pressure

protection valves

M

Air purge valves

VB1a

VB1b

VB1h

VB1i

VB1j

VB1p

Port

No.1

~

No.8

Port

No.9

~

No.16

To Sub-HBC

PS

PS3

Strainer

Strainer

S

S

S

21S4Ma

21S4Mb

The port for connecting multiple HBC controllers is

capped closed at factory shipment.

High-

pressure

pipe

Low-

pressure

pipe

M

M

M

M

M

[ V Refrigerant Circuit ]

- 63 -

HWE1410A GB

2. Sub-HBC
(1) CMB-WP108V-GB1

(2) CMB-WP1016V-GB1

T41a

T41b

T41d

T41e

T41f

T41h

Air purge
valves

M

M

M

M

M

M

Air
purge
valves

VB1a

VB1b

VB1d

VB1e

VB1f

VB1h

To HBC

TH43

TH42

Port

No.1~No.4

Port

No.5~No.8

Sub-HBC water system

T41a

T41b

T41h

T41i

T41j

T41p

Air purge
valves

M

M

M

M

M

M

Air
purge
valves

VB1a

VB1b

VB1h

VB1i

VB1j

VB1p

Port

No.1~No.8

Port

No.9~No.16

To HBC

Sub-HBC water system

TH43

TH42

[ V Refrigerant Circuit ]

- 64 -

HWE1410A GB

[2] Principal Parts and Functions

1. HBC controller

Part name Symbols Notes Usage Specifications Check method

Solenoid
valve

SVM1 Refriger-

ant side

Opens during the cooling mode
and defrost cycle

AC220-240V
Open when energized/
closed when de-energized

Continuity check
with a tester

4-way
valve

21S4Ma,b Refriger-

ant side

Switches between heating and
cooling

AC220-240V
Open when energized/
closed when de-energized

Continuity check
with a tester

LEV LEV1 Refriger-

ant side

Supplies refrigerant to HEX1a
and HEX1b

DC12V
Opening of a valve driven by
a stepping motor
0~3000 pulses

Refer to the sec­tion "Continuity
Test with aTest­er".
Continuity be­tween white, red,
and orange.
Continuity be­tween yellow,
brown, and blue.

LEV2 Refriger-

ant side

Supplies refrigerant to HEX2a
and HEX2b

LEV3 Refriger-

ant side

Subcool control

Thermistor TH11,12,

T13,14

Refriger­ant side

Compressor frequency control
LEV opening adjustment

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

TH15,16 Bypass superheat amount ad-

justment

TH31a~p Water

side

Indoor unit circulating water con­trol

TH32,33 Indoor unit circulating water con-

trol

TH34,35 Water pump error detection

TH36,37 Water pump suction water tem-

perature detection

Pressure
sensor

PS1
(high pres­sure side)

Refriger­ant side

1) Detects high pressure

2) LEV control

PS3
(medium
pressure
side)

1) Detects medium pressure

2) LEV control

Valve
block

VB3a~p

*1

Water
side

1) Switches the water flow
path depending on the op­eration mode

2) Temperature difference
control
Controls the water flow to
each indoor unit

DC12V
Opening of a valve driven by
a stepping motor

*2

Pump PUMP1,2 Water

side

Temperature difference control
Controls the water flow to each
indoor unit

Rated voltage DC268V
Specified voltage DC0-6V

Water
pressure
protection
valve

CPV1 Water

side

Trips when the internal pressure
in the water circuit rises

Operating pressure: 560
kPa

*1. The names of port "a" through "p" are corresponding to port 1 through 16.

*2. For the degree of valve opening, "0" or "1600" indicates fully open and "800" indicates fully closed.

Yellow

White

Red

Orange

Brown Blue

M

R = 15k

0

R = 3460
R = 15

0/80

t

3460

273 t

1

273

1

exp

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

PS1

1

123

2
3

[ V Refrigerant Circuit ]

- 65 -

HWE1410A GB

2. Sub-HBC

Part name Symbols Notes Usage Specifications Check method

Thermistor TH31a~p

*1

,

TH32, 33

Water
side

Indoor unit circulating water con­trol

Same as the table above

Valve
block

VB3a~p

*1

Water
side

1) Switches the water flow
path depending on the op­eration mode

2) Temperature difference
control
Controls the water flow to
each indoor unit

DC12V
Opening of a valve driven by
a stepping motor

*2

*1. The names of port "a" through "p" are corresponding to port 1 through 16.

*2. For the degree of valve opening, "0" or "1600" indicates fully open and "800" indicates fully closed.

- 66 -

[ V Refrigerant Circuit ]

GBHWE1410A

- 67 -

HWE1410A GB

VI Control

[1] Functions and Factory Settings of the Dipswitches ......................................................... 69

[2] Controlling HBC Controller............................................................................................... 70

[3] Operation Flow Chart....................................................................................................... 79

- 68 -

HWE1410A GB

[ VI Control ]

- 69 -

HWE1410A GB

VI Control

[1] Functions and Factory Settings of the Dipswitches

1. Switch functions <HBC controller> (Control board)

Switch Function

Function according to switch setting

Switch setting tim-

ing

OFF ON

SW3

1 - 3 Model setting R410A -

Always leave this
switch to OFF.

4- - - -

5

SVM1 ON fixed
control

Not available Available

Any time after be­ing energized

6 - 7

Pressure sensor
backup

Error codes are not sent to
outdoor units

Error codes are sent to out­door units.

Any time after be­ing energized

8- - - -

9- - - -

10

Heat recovery de­frost

Available Not available

Before being ener­gized

SW4

1

Debris removal run
mode

Not available Available

Any time after be­ing energized

2- - - -

3

Test run air vent
mode after strainer
processing

Not available Available

Any time after be­ing energized

4

Forced termination
of a test run

Not available Available

Any time after be­ing energized

5

Water tightness
check

Not available
(When the switch is set from
ON to OFF, set the VB3 to the
specified opening for stop­page.)

Available
Two water pumps ON (output
30%) one minute after setting
VB3 to 0 or 1600.

Any time after be­ing energized (only
when the control
mode is stopped)

6

Operation function 1
of the valve block

Not available VB3=800

Any time after be­ing energized

7- - - -

8- - - -

9- - - -

10-- --

SW5

1

Water supply SW

Not available Available: VB=0 or 1600

Any time after be­ing energized

2

Air vent SW

Not available Available

Any time after be­ing energized

3- - - -

4

Compatible with
antifreeze-liquid 1

Refer to the Databook.

5

Compatible with
antifreeze-liquid 2

6- - - -

7- - - -

8- - - -

[ VI Control ]

- 70 -

HWE1410A GB

[2] Controlling HBC Controller

Water pump control

-1- Water pump control

Depending on the capacity required, temperature difference on the indoor units is controlled so as to be within a certain range.
During normal operation, the changes in specified voltage of the water pump corresponding to the capacity of connectable
indoor units are shown in the graph below.

The specified voltage changes with the load on the indoor unit side. (A sample is shown in the graph above.)

(1) Periodic specified voltage control

1) Periodic control cycle
Specified voltage control is performed after the following times have elapsed.

Thirty seconds after either compressor startup or the completion of the defrost cycle

2) The amount of frequency change
The amount of specified voltage change is controlled to approximate the target value based on the target temperature differ-

ence.

Connectable capacity

Minimum
connectable
capacity

100%

Specified voltage

2V

6V

[ VI Control ]

- 71 -

HWE1410A GB

4-way valve control

-2- 4-way valve control

4-way valves (21S4M (a, b)) turn on or off according to the operation mode.
For 21S4Ma, ON indicates switching to the cooling side and OFF indicates switching to the heating side. For 21S4Mb, ON
indicates switching to the heating side and OFF indicates switching to the cooling side. For 21S4Ma, ON indicates switching
to the cooling side and OFF indicates switching to the heating side. For 21S4Mb, ON indicates switching to the heating side
and OFF indicates switching to the cooling side. When energized: ON; When de-energized: OFF

1) Select the installation site carefully, as some noise may be produced when the 4-way valve is switched.
Install the unit in a place where the noise from the unit will not be problem.

(Install the indoor units and HBC controller at least 5m [16-6/16ft] away from each other when installing in a space with low
background noise, e.g., hotel rooms.)
Install the unit in the ceiling of an area that are not always occupied by people, e.g., hallway, office kitchen, restrooms. (Do
not install the unit in the middle of a room.)

2) The elapsed time is used to reduce the switching frequency of the control modes between No. 1 or No. 6 AND No. 3 or No. 4.

3) Capacity control is determined depending on the opening of VB3 that adjusts the water flow rate.

No. Operation mode

4-way valve control

mode

4-way valve

21S4Ma 21S4Mb

1 Cooling-only Cooling ON OFF

2 Cooling (Half HEX) OFF OFF

3 Cooling-main Cooling-main OFF OFF

4 Heating-main Heating-main OFF OFF

5 Heating-only Warm heating OFF OFF

6 Heating OFF ON

7 Defrost Defrost The status before defrosting

maintained

The status before defrosting
maintained

8 Stopped Stopped OFF OFF

Operation mode change
(Mixture of units in cooling and heating
→ Cooling-only/Heating-only)

Mixture of units in cooling and
heating(No.3 or 4)
(21S4Ma: OFF, 21S4Mb: OFF)

Operation mode
change

Cooling-only

Switches to the mild-cooling control (No. 2).
(21S4Ma: OFF, 21S4Mb: OFF)

The elapsed time since

the control mode is changed

≥ 30 minutes

Switches to the cooling control (No. 1).
(21S4Ma: ON, 21S4Mb: OFF)

No

* Note 3

* Note 2

No

Yes

Yes

Heating-only

Switches to the mild-heating control (No. 5).
(21S4Ma: OFF, 21S4Mb: OFF)

Switches to the heating control (No. 6).
(21S4Ma: OFF, 21S4Mb: ON)

No

* Note 3

* Note 2

No

Yes

Yes

The opening of VB3

is too large.

The elapsed time since

the control mode is changed

≥ 30 minutes

The opening of VB3

is too large.

[ VI Control ]

- 72 -

HWE1410A GB

Water rate valve control

-3- Valve block (VB3) water flow rate adjustment

Depending on the capacity required, periodic control is performed every one minute to keep the temperature difference be-

tween the heat exchanger outlet pipe temperature and indoor unit port pipe temperature within 4.0ºC for cooling and 4.5ºC for
heating, and the opening is controlled in the range between 85 and 700 (cooling) or 900 and 1600 (Heating) pulses.

For the degree of valve opening, C800 or H800 indicate fully open and 0 indicates fully closed.

3-way valve control

-4- Valve block (VB3) water flow path switching control

The following table shows the control pattern of the 3-way valve in different operation modes to switch the water flow.

(1) Cooling-only Thermo-ON, Cooling-only Thermo-OFF, Cooling-only test run, Heating-only Thermo ON, and Heating-

only Thermo OFF

(2) Heating-main Thermo-ON, Heating-main Thermo-OFF, Cooling-main Thermo-ON, and Cooling-main Thermo-OFF

<Designated degree of valve opening>

- 1: 800 pulse

- 2: 85~700 pulses

- 3: 900~1600 pulses

Outdoor unit operation mode

Connected indoor unit

operation mode

VB3 command value

for opening

Cooling-only Thermo-ON
Heating-only Thermo ON

Stop 1

Fan 1

Thermo-ON 2 or 3

Thermo-OFF 1

Cooling-only Thermo-OFF
Heating-only Thermo OFF

Stop 1

Fan 1

Thermo-OFF 1

Cooling-only test run Stop 1

Fan 1

Thermo-ON 2 or 3

Thermo-OFF 1

Outdoor unit operation mode

Connected indoor unit

operation mode

VB3 command value

for opening

Heating-main Thermo-ON
Cooling-main Thermo-ON

Stop 1

Fan 1

Cooling Thermo-ON 2

Cooling Thermo-OFF 1

Heating Thermo-ON 3

Heating Thermo-OFF 1

Heating-main Thermo-OFF
Cooling-main Thermo-OFF

Stop 1

Fan 1

Cooling Thermo-OFF 1

Heating Thermo-OFF 1

[ VI Control ]

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HWE1410A GB

Bypass Control

-5- Bypass Control

Solenoid valves have two types: (SVM1) that bypass the high- and low- pressure sides; LEV (LEV3). They perform the fol­lowing functions.

(1) Bypass solenoid valve (SVM1) (ON: open)

Plate heat exchanger contro

-6- Plate heat exchanger control

(1) Cooling-only Thermo-ON and Cooling-only test run

When three minutes have passed after the LEV operates with initial opening, the LEV opening is adjusted every 1 minute to

keep the amount of superheat before and after the plate heat exchanger constant.

(2) Heating-only Thermo-ON

When three minutes have passed after the LEV operates with initial opening, the LEV opening is adjusted every 1 minute to

keep the amount of subcool before and after the plate heat exchanger constant.

(3) Cooling-main/Heating-main Thermo-ON and Cooling-main/Heating-main refrigerant recovery

1) Periodic control for LEV1
The LEV opening is adjusted the same way as described in (2) Heating-only Thermo-ON and Heating-only refrigerant recov-

ery.

2) Periodic control for LEV2
To be fully open (3000)

Operation mode

SVM1

ON OFF

Cooling-only Thermo-ON Always ON

Cooling-main Thermo-ON Always OFF

Heating-only Thermo-ON Always OFF

Heating-main Thermo-ON Always OFF

Defrost Always ON during heat recovery de-

frost

OFF except to perform heat recovery

defrost

Stop Always OFF

Cooling-only Thermo-OFF Always ON

Thermo-OFF (Heating-only, Mixture of
units in cooling and heating)

Always OFF

Cooling-only test run Always ON

Test run for stop Always ON

[ VI Control ]

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HWE1410A GB

Defrost Operation Control

-7- Defrost Operation Control

(1) Defrost cycle type

The defrost cycle has following two types: Bypass defrost that is the same method as that used in a CITY MULTI series sys-

tem and heat recovery defrost (default) that the heat is collected from the water circuit and the defrost cycle ends early.
The following figure shows the refrigerant flow for the bypass defrost. In the bypass defrost method, LEV1 and 2 are closed

and the heat is not exchanged between the refrigerant and water. In the heat recovery defrost method, the defrost cycle ends
early because the heat is caught from the water.
The basic defrost method is the heat recovery defrost with the dip switch 3-10 on the HBC turned OFF (default). The bypass
defrost may be performed depending on the water temperature. Setting the dip switch 3-10 to ON performs the bypass defrost.

(2) Starting the defrost operation

The defrost cycle will start when all of the three conditions (outside temperature, cumulative compressor operation time, and

pipe temperature) under <Condition 1>, <Condition 2>, or <Condition 3> are met.

1) Outdoor unit pipe temperature (TH6)

If 10 minutes have passed since compressor startup or since the completion of a defrost cycle, a forced defrost cycle can be

started by setting DIP SW2-7 to ON.

Even if the defrost-prohibit timer is set to 90 minutes (or 150 minutes for "Condition 3" to be met), the actual defrost-prohibit

time for the next defrost cycle is 50 minutes if the last defrost cycle took 12 minutes.

S

S

Refrigerant flow

High-pressure
pipe

Low-pressure
pipe

HBC refrigerant system

HBC water system

LEV1

LEV2

SV1

HIC

T13

T15

T16

LEV3

PS1

T12

T11

T14

Water

Water

Water

Water

PS

Cooling-main
heat exchanger

Heating-main
heat exchanger

PS

S

21S4Ma

21S4Mb

Water pump WP1

Water purge
valve

Expansion
tank

Water
supply

Refrigerant Refrigerant

Refrigerant

Water pressure
protection valves

PS3

Strainer

T32

T34

Strainer

T33

Air purge valves

Water pump WP2

T35

Refrigerant

M

Condition 1 Condition 2 Condition 3

Outside temperature
(TH7)

-5ºC [23ºF] or above -5ºC [23ºF] or below

Cumulative compressor
operation time

50 minutes or more

90 minutes or more if the defrost prohibit timer is set to 90.

250 minutes or more

Pipe temperature
(TH6)

The pipe temperature has
stayed below the temperatures
in the table below (Note1) for
three minutes.

The pipe temperature (TH6)
has stayed at or below the val­ue obtained from the formula
"Outside temperature (TH7) ­10ºC [18ºF]" for three minutes.
or the 63LS reading has stayed
below the value obtained from
the formula "1.5 + 0.02 x
(20+TH7)" for three minutes.

The pipe temperature has
stayed below the temperatures
in the table below (Note1) for
three minutes

SW3-3 OFF -8ºC

SW3-3 ON -5ºC

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HWE1410A GB

(3) Defrost cycle

*The indoor unit fan will stop during defrost.

Bypass defrost Heat recovery defrost

Outdoor Unit Dip switch setting SW3-10 ON SW3-10 OFF

Operation mode Heating-only Heating-main Heating-only Heating-main

Outdoor unit fre­quency

103Hz

Outdoor unit fan Stop

SV1a ON (open)

SV5b ON (open)

21S4a, 21S4b OFF

SV9 OFF (closed)

HBC controller
(other than 3­way valve and
water flow rate
control valve)

LEV1 41 3000

LEV2 41 3000 41

LEV3 3000

SVM1 ON OFF

21S4Ma OFF

21S4Mb ON ON OFF

PUMP1 Scheduled control Command value 100%

PUMP2 Scheduled control Command value

100%

Scheduled control

HBC controller
(3-way valve
and water flow
rate control
valve)

Dip switch setting SW3-10 ON

Indoor unit mode Heating Thermo-ONHeating Thermo-

OFF

Cooling Thermo-ONCooling Thermo-

OFF

VB3a~p Scheduled control Scheduled control Scheduled control C800 or H800

HBC controller
(3-way valve
and water flow
rate control
valve)

Dip switch setting SW3-10 OFF

Indoor unit mode Heating Thermo-ONHeating Thermo-

OFF

Cooling Thermo-ONCooling Thermo-

OFF

VB3a~p C800 or H800 C800 or H800 Scheduled control C800 or H800

[ VI Control ]

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HWE1410A GB

(4) Recovering from Defrost

The setting of the dip switch 3-10 determines the defrost method (bypass defrost or heat recovery defrost).

As shown in the following flow chart, the bypass defrost may be performed during the heat recovery defrost depending on the
operation status.

Heating-only or
Heating-main

Receiving

"Defrost" signal

from OC

No

Yes

Bypass defrost

ON

OFF

HBC Dip switch

SW3-10

High pressure heat recovery defrost:
LEV1, 2 = 3000
LEV3 = 3000
Pump = Always in operation
Indoor unit VB3 during Thermo-ON = Fully open

No

No

No

No

Lower the frequency,
count the No. of freezing.

Freezing is
suspected.

No. of freezing
< 3 times

Yes

Yes

Yes

Receiving

"Defrost" signal

from OC

Recovering from Defrost

Yes

Water temp. < 20ºC

[ VI Control ]

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HWE1410A GB

Refrigerant Recovery Control

-8- Refrigerant Recovery Control

The refrigerant recovery control function controls the refrigerant flow at the HBC controller during heating operation to keep
the refrigerant from collecting inside the HBC controller.
It is also performed during cooling operation to prevent an excessive amount of refrigerant from accumulating in the outdoor
heat exchanger.

Starting criteria for the refrigerant recovery cycle (during Cooling-only, Cooling-main, Heating-only, or Heating-main
mode)

The refrigerant recovery mode starts when all of the following conditions are met:

1) When 5 minutes have passed in the Heating-only or Heating-main mode or 30 seconds have passed in the Cooling-only or
Cooling-main mode since the completion of the previous refrigerant recovery cycle AND the when following conditions are
met.
Outdoor unit TH4 > 105°C [221°F]

2) When the port is not in the 4-minute restart delay mode

Starting criteria for the refrigerant recovery cycle (during Cooling-only, Cooling-main, Heating-only, or Heating-main
mode)

The opening of LEV1 and LEV2 on the HBC is increased.

[ VI Control ]

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HWE1410A GB

Backup control

-9- Backup control

The following backup control is started on the HBC as necessary.

(1) Backup mode for plate heat exchanger protection

The following control is performed depending on the outlet pipe temperature of the plate heat exchanger for freeze-up pro-

tection.

[Cooling-main/Heating-main operation]

1) Outdoor unit (Heat source unit)
Cooling-main operation: Continued; Heating-main operation: Continued

2) HBC controller

(2) Heating water temperature backup mode

When the heating operation can be continued without receiving heat from the refrigerant due to water temperature rise during

heating operation (the outlet pipe temperature of the plate heat exchanger is 50ºC or above), the outdoor unit goes into the
Thermo-OFF mode, and the heating operation is performed only by circulating the hot water by the water pump. When the
water temperature decreases to a certain level (the outlet temperature of the plate heat exchanger is 45ºC or below), the out­door unit starts up.

Water pump protection control

-10- Water pump protection control

When the circuit is clogged or air enters the water circuit, the protection control starts on the HBC controller to protect the
water pump and the system is stopped depending on the situation.

(1) When the internal temperature of the water pump increases

When the detection temperature of the water pump outlet pipe is above a certain level, the water pump is stopped to protect

it from the heat.

(2) When the revolutions of the water pump increases

When the revolutions of the water pump is above a certain level (The value changes depending on the specified voltage.),

the water pump is stopped to reduce the risk of air infiltration and water leaks.

Control mode

Cooling-main/Heating-main Cooling-only

Outdoor unit
(Heat source
unit)

Operation
mode

Continues the current operation Cooling-only Thermo-OFF

HBC controller 21S4Ma Heating side: open (de-energized) Cooling side: open (energized)

21S4Mb Cooling side: open (de-energized) Cooling side: open (de-energized)

LEV1 Maintains the opening that was used in the

previous operation mode

Opening during Cooling-only Thermo-OFF

LEV2 41 pulses: fully closed Opening during Cooling-only Thermo-OFF

LEV3 3000 pulses: fully open Opening during Cooling-only Thermo-OFF

SVM1 Closed Open

PUMP1 Continues the heating operation Continues the cooling-only operation

PUMP2 Continues the cooling operation Continues the cooling-only operation

VB3a~p The opening depending on the indoor unit

operation mode

The opening depending on the indoor unit

operation mode

[ VI Control ]

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HWE1410A GB

[3] Operation Flow Chart

1. Mode determination flowchart

(1) Indoor unit (cooling, heating, dry, fan mode)

Start

Remote controller

display lit off

Error mode

Error stop

Error display

Self-holding of

protection function

Error command

to outdoor unit

Indoor unit

LEV fully closed.

Refer to 2-(1) for
cooling operation.

Refer to 2-(2) for

heating operation.

Refer to 2-(3) for

dry operation.

ProhibitionProhibitionProhibition

Dry display

Heating displayCooling display

Dry modeHeating mode

Fan mode

Fan display

Fan operations

Operation mode

Cooling mode

Prohibition

"Blinking display on

the remote controller"

FAN stop

Breaker

turned on

Operation SW

turned on

Auxiliary heater

ON

Drain pump

ON

3-minute drain

pump ON

NO

NO

NO

NO

NO

NO NO NO NO

*Note 1

*Note 1

*Note 2

*Note 3 *Note 3 *Note 3

1. Protection function
self-holding cancelled.

2.

HBC controller VB3 fully closed.

1. Auxiliary heater OFF

2. Low fan speed for
1 minute

YES

YES

YES

YES

YES YES YES

YES

Normal operation

Error

Stop

1

Prohibition

Auto COOL/HEAT

display

Automatic

cooling/heating mode

*Note 3

YES

Auto

cooling/heating mode

11

*Note 1. HBC controller VB3 fully closed : Opening 0.
*Note 2. The system may go into the error mode on either the indoor unit side or the HBC controller or outdoor unit side.

If some of the indoor units are experiencing a problem, only those indoor units that are experiencing the problem
will stop. If the HBC controller or the outdoor unit is experiencing a problem, all the connected units will stop.

*Note 3. If multiple indoor units are connected to a port and there is a discrepancy in the operation mode between the
indoor unit and the port, the operation will be prohibited. (Operation mode blinks on the remote controller, the
Fan stops, HBC controller VB3 becomes fully closed.)

[ VI Control ]

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HWE1410A GB

(2) Outdoor unit (cooling only, heating only, cooling main and heating main modes)

(Heat source unit)

Start

Breaker

turned on

Operation

command

Error stop

Error display on
the outdoor unit LED

Self-holding of

protection function

Operation command
to the HBC controller

Operation

mode

Error mode

52C1 ON

*Note 1

*Note 2

*Note 3

*Note 4

YES

YES

YES

YES

NO

NO

NO

fan

NO

"HO" / "PLEASE WAIT" blinks

on the remote controller

Operation command to the HBC controller

Cooling only, Heating only
Mixture of units in cooling and heating

Mixture of units in cooling and heating

Protection function
self-holding cancelled.

Normal operation

1. 52C1 4-way valve OFF

2. Inverter output 0Hz

3. Fan stop (PURY)

4. All solenoid valves OFF

Cooling Only Heating Only

2

2

Cooling Main

Operation

mode

Operation

mode

*Note 1. For approximately three minutes after power on, a search for the outdoor unit address, HBC controller
address, indoor unit address, and remote controller address, and group information is performed.
While this process is performed, "HO" and "PLEASE WAIT" blink on the display. If the indoor units have
not been grouped with the remote controller, "HO" and "PLEASE WAIT" will keep blinking on the display,
even after three minutes after power on.

*Note 3. The units will follow the operation mode commands from the HBC controller
*Note 4. When the operation mode commands from the HBC controllers are mixed (both cooling and heating), the

actual operation mode is determined by the outdoor unit.

*Note 2. The system may go into the error mode on the indoor unit, HBC controller, or the outdoor unit side.
The outdoor units will stop only when all the indoor units are experiencing a problem. If at least one of the
indoor units is in normal operation, the outdoor unit will continue in operation, displaying an error code on
the LED.

Heating Main

Indoor units
registered to the
remote controller

Error

Unit in the stopped state

[ VI Control ]

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HWE1410A GB

(3) HBC controller (cooling only, heating only, cooling main and heating main modes)

Start

Breaker

turned on

Operation

command

Error command to

outdoor unit

Error stop

Self-holding of

protection function

Error command to

indoor unit

Error mode

*Note 1

YES

YES

YES

NO

NO

Fan

NO

All units in the

same mode
Solenoid valves OFF
LEV Fully closed

1.

Determination of operation mode

(Cooling only, Heating only, Mixture

of units in cooling and heating)

2.

Transmitted to the outdoor unit

3

3

Operation

mode

Note 1. The system may go into the error mode on either the indoor unit side or the HBC controller or outdoor
unit side. If some of the indoor units are experiencing a problem, only those indoor units that are
experiencing the problem will stop. If the HBC controller or the outdoor unit is experiencing a problem,
all the connected units will stop.

Operation

mode

Operation

mode

Cooling Only Heating Only

Cooling Main Heating Main

Mixture of units in cooling and heating

Reception of operation mode

command from the outdoor unit

Protection function
self-holding cancelled.

Normal operation

Error

Unit in the stopped state

[ VI Control ]

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HWE1410A GB

2. Operations in each mode
(1) Cooling operation

Cooling operation

Test run mode

ON

Thermostat

ON

3-minute restart

prevention

*Note 1

YES

YES

YES

NO

NO

NO

4-way valve OFF

1. Inverter frequency control

2. HBC controller VB3 control

3. Solenoid valve control

4. Outdoor unit fan control (PURY)

5. HBC controller solenoid valve control

6. HBC controller control

Normal operation

During test run mode

Indoor unit fan
operation

1. Inverter output 0Hz

2. HBC controller VB3

fully closed

3. Solenoid valves OFF

4. Outdoor unit fan stop (PURY)

5.

HBC controller solenoid valves OFF

6. HBC controller LEV fully closed

Unit in the stopped state

2 3

*Note 1. The indoor fan operates at the set notch under cooling mode regardless of the
ON/OFF state of the thermostat.

[ VI Control ]

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HWE1410A GB

(2) Heating operation

*Note 1. When the outdoor unit goes into the defrost mode (PURY only), defrost command is sent to the HBC controller and

indoor units.

Upon reception of the command, the indoor units will go into the defrost mode. When defrosting is completed and
upon receiving the signal that indicates the completion of defrosting, indoor units will resume the heating operation.

*Note 2. Defrost end condition: 10 or more minutes must pass after defrost operation.

or Outdoor unit piping temperature : refer to "-7- Defrost operation control" of [2] Controlling HBC Controller
(page 74)

Heating operation

Test run mode

ON

Thermostat

ON

Defrost

operation

3-minute restart

prevention

*Note 1,2

*Note 1,2

YES

YES

YES

YES

NO

NO

NO

NO

NO

1. Indoor/outdoor unit fan control

2. Inverter frequency control

3. HBC controller VB3 fully open

4. Solenoid valve control

5.

HBC controller solenoid valve control

6. HBC controller LEV control

Normal operation

Defrost operation

4-way valve ON

During test run mode

1. Indoor unit fan operation at
Very Low speed

2. Inverter output 0Hz

3. HBC controller VB3 fully open

4. Solenoid valve OFF

5. Outdoor unit fan stop (PURY)

6.

HBC controller solenoid valve control

7. HBC controller LEV control

Stopping the

defrost operation

1. Indoor unit fan stop

2. Inverter defrost frequency control

3. HBC controller VB3 fully open

4. Solenoid valve control

5. Outdoor unit fan stop

6.

HBC controller solenoid valve control

7. HBC controller LEV control

4-way valve OFF

1 3

Stopping the defrost operation

Unit in the stopped state

[ VI Control ]

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HWE1410A GB

(3) Dry operation

Dry operation

*Note 1

*Note 2

YES

YES

NO

NO

4-way valve OFF

1. Outdoor unit (compressor)
intermittent operation

2. Indoor unit fan intermittent operations
(Synchronized with the compressor:
low speed, OFF operations)

Normal operation

Thermostat ON

Thermostat ON

1. Indoor unit fan stop

2. Inverter output 0Hz

3. HBC controller VB3 fully closed.

4. Solenoid valve OFF

5. Outdoor unit fan stop (PURY)

6. H

BC controller Solenoid valve OFF

7. HBC controller

LEV fully closed

2 3

*Note 1.When the return air temperature reaches 18ºC [64ºF] or above, the outdoor unit (compressor) and the
indoor unit fan will start a simultaneous intermittent operation. The operations of the outdoor unit,
HBC controller, outdoor unit LEVs and solenoid valves that are performed when the compressor turns on
are the same with the cooling operation.

*Note 2.Thermostat is always kept on during test run mode, and indoor and outdoor unit intermittent operation
(ON) time is a little longer than that of normal operation.

Test run mode

ON

Suction temperature

18 C[64 F]

Unit in the stopped state

- 85 -

HWE1410A GB

VII Test Run Mode

[1] Items to be checked before a Test Run........................................................................... 87

[2] Operating Characteristic and Refrigerant Amount ........................................................... 88

[3] Adjusting the Refrigerant Amount .................................................................................... 88

[4] Refrigerant Amount Adjust Mode..................................................................................... 91

[5] The following symptoms are normal. ............................................................................... 91

[6] Standard Operation Data (Reference Data) .................................................................... 92

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HWE1410A GB

[ VII Test Run Mode ]

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HWE1410A GB

VII Test Run Mode

[1] Items to be checked before a Test Run

(1) Check for refrigerant leak and loose cables and connectors.

(2) Measure the insulation resistance between the power supply terminal block and the ground with a 500V megger and

make sure it reads at least 1.0Mohm.

Do not operate the unit if the insulation resistance is below 1.0Mohm.
Do not apply megger voltage to the terminal block for transmission line. Doing so will damage the controller board.
The insulation resistance between the power supply terminal block and the ground could go down to close to 1Mohm imme-

diately after installation or when the power is kept off for an extended period of time because of the accumulation of refrigerant
in the compressor.

If insulation resistance reads at least 1Mohm, by turning on the main power and powering the belt heater for at least 12 hours,

the refrigerant in the compressor will evaporate and the insulation resistance will go up.

Do not measure the insulation resistance of the terminal block for transmission line for the unit remote controller.

(3) Make sure the valves on both the high-pressure and low-pressure sides are fully open.

Securely tighten the cap.

(4) Check the phase sequence and the voltage of the power supply.

(5) [When a transmission booster is connected]

Turn on the transmission booster before turning on the outdoor units.

If the outdoor units are turned on first, the connection information for the refrigerant circuit may not be properly recognized.
In case the outdoor units are turned on before the transmission booster is turned on, perform a power reset on the outdoor

units after turning on the power booster.

(6) Turn on the main power to the unit at least 12 hours before test run to power the belt heater.

Insufficient powering time may result in compressor damage.

(7) When a power supply unit is connected to the transmission line for centralized control, perform a test run with the

power supply unit being energized. Leave the power jumper connector on CN41 as it is (factory setting).

[ VII Test Run Mode ]

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HWE1410A GB

[2] Operating Characteristic and Refrigerant Amount

It is important to have a clear understanding of the characteristics of refrigerant and the operating characteristics of air conditioners
before attempting to adjust the refrigerant amount in a given system.

1. Operating characteristic and refrigerant amount

The following table shows items of particular importance.

1) During cooling operation, the amount of refrigerant in the accumulator is the smallest when all indoor units are in operation.

2) During heating operation, the amount of refrigerant in the accumulator is the largest when all indoor units are in operation.

3) General tendency of discharge temperature

Discharge temperature tends to rise when the system is short on refrigerant.
Changing the amount of refrigerant in the system while there is refrigerant in the accumulator has little effect on the discharge

temperature.

The higher the pressure, the more likely it is for the discharge temperature to rise.
The lower the pressure, the more likely it is for the discharge temperature to rise.

4) When the amount of refrigerant in the system is adequate, the compressor shell temperature is 10 to 60°C [18 to 108°F] higher
than the low pressure saturation temperature (Te).

-> If the temperature difference between the compressor shell temperature and low pressure saturation temperature (Te) is
smaller than 5°C [9°F], an overcharging of refrigerant is suspected.

[3] Adjusting the Refrigerant Amount

1. Symptoms

Overcharging or undercharging of refrigerant can cause the following symptoms:
Before attempting to adjust the amount of refrigerant in the system, thoroughly check the operating conditions of the system.
Then, adjust the refrigerant amount by running the unit in the refrigerant amount adjust mode.

2. Amount of refrigerant

(1) To be checked during operation

Operate all indoor units in either cooling-only or heating-only mode, and check such items as discharge temperature, subcool­ing, low pressure, suction temperature, and shell bottom temperature to estimate the amount of refrigerant in the system.

The system comes to an abnormal stop, displaying 1500 (overcharged refrigerant) on
the controller.

Overcharged refrigerant

The operating frequency does not reach the set frequency, and there is a problem with
performance.

Insufficient refrigerant amount

The system comes to an abnormal stop, displaying 1102 (abnormal discharge temper­ature) on the controller.

Symptoms Conclusion

Discharge temperature is high. (Normal discharge temperature is below 95°C [203°F].) Slightly under-

charged refrigerant

Low pressure is unusually low.

Suction superheat is large. (Normal suction superheat is less than 20°C [36°F].)

Compressor shell bottom temperature is high. (The difference between the compressor shell
bottom temperature and low pressure saturation temperature (Te) is greater than 60°C [108°F].)

Discharge superheat is small. (Normal discharge superheat is greater than 10°C [18°F].) Slightly overcharged

refrigerant

Compressor shell bottom temperature is low. (The difference between the compressor shell bot­tom temperature and low pressure saturation temperature (Te) is less than 5°C [9°F].)

[ VII Test Run Mode ]

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HWE1410A GB

3. Amount of refrigerant to be added

The amount of refrigerant that is shown in the table below is factory-charged to the outdoor units.
The amount necessary for extended pipe (field piping) is not included and must be added on site.

(1) Calculation formula

The amount of refrigerant to be added depends on the size and the length of field piping. (unit in m[ft])

1) When the distance between HBC and outdoor unit is longer than 30.5m:
Amount of added refrigerant (kg) = (0.21xL

1

)+(0.14xL2)+(0.1xL3)+α

1

2) When the distance between HBC and outdoor unit is 30.5m or shorter:
Amount of added refrigerant (kg) = (0.23xL1)+(0.16xL2)+(0.11xL3)+α

1

Outdoor unit model Amount of pre-charged refrigerant

in the outdoor unit (kg)

Outdoor unit model Amount of pre-charged refrigerant

in the outdoor unit (kg)

P200YLM 9.5 P400YLM 10.3

P250YLM 9.5 P450YLM 11.8

P300YLM 10.3 P500YLM 11.8

P350YLM 10.3

Outdoor unit model Amount of pre-charged refrigerant

in the outdoor unit (kg)

EP200YLM 6.0

EP250YLM 6.0

EP300YLM 8.0

EP350YLM 8.0

EP400YLM 10.5

EP450YLM 11.8

EP500YLM 11.8

Heat source unit model Amount of pre-charged refrigerant

in the Heat source unit (kg)

P200YLM 5.0

P250YLM 5.0

P300YLM 5.0

P350YLM 6.0

P400YLM 6.0

P450YLM 6.0

P500YLM 6.0

L

1

:Length of Φ22.2 [7/8"] high pressure pipe (m)

L

2

:Length of Φ19.05 [3/4"] high pressure pipe (m)

L

3

:Length of Φ15.88 [5/8"] high pressure pip (m)

α

1

:Refer to the table below.

[ VII Test Run Mode ]

- 90 -

HWE1410A GB

Round up the calculation result to the nearest 0.1kg. (Example: 18.04kg to 18.1kg)

Outdoor unit index

(Heat source unit model)

Diameter of high-pressure pipe

(E)P200 ø15.88

(E)P250 ø19.05

(E)P300 ø19.05

(E)P350 ø19.05

(E)P400 ø15.88

(E)P450 ø19.05

(E)P500 ø19.05

Amount for the HBC controller

α1(kg)

3.0

(2) Example (3) Sample calculation

A

Outdoor unit (~(E)P350) (Heat source unit)

HBC controller

Indoor unit

(15 ~ 50)

Indoor unit

(15 ~ 50)

Indoor unit

(15 ~ 50)

Indoor unit

(15 ~ 50)

A

B

C

D

Outdoor unit ((E)P300~) (Heat source unit)

HBC controller

HBC controller

Indoor unit

(15 ~ 50)

Indoor unit

(15 ~ 50)

Indoor unit

(15 ~ 50)

Indoor unit

(15 ~ 50)

Indoor 1: 50 A: ø19.05 42 m

2: 50

3: 50

4: 40

Outdoor P250

The total length of each liquid line is as follows:
ø19.05: A = 42 m,

α

1 = 3.0

Therefore,
<Calculation example>
Additional refrigerant charge

= 42 × 0.14 + 3.0
= 8.88 kg

* All pipe work except A is water pipe work.

Indoor 1: 50 A:ø22.2 18 m

2: 50 B:ø15.88 5 m

3: 50 C:ø15.88 10 m

4: 50 D:ø15.88 8 m

Outdoor P400

The total length of each liquid line is as follows:
ø22.2: A = 18 m, ø15.88: B + C + D = 23m,

α

1 = 3.0 × 2

Therefore,
<Calculation example>
Additional refrigerant charge

= 18 × 0.23+ (5 + 10 + 8) × 0.11 + 3.0 × 2
= 12.67 kg

* All pipe work except A, B, C, D is water pipe work.

= 8.9 kg

= 12.7 kg

[ VII Test Run Mode ]

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HWE1410A GB

[4] Refrigerant Amount Adjust Mode

On the model of unit described in this document, the refrigerant charge cannot be adjusted.

[5] The following symptoms are normal.

Symptoms

Remote controller

display

Cause

The auto vane adjusts its posi­tion by itself.

Normal display

After an hour of cooling operation with the auto vane in the vertical posi­tion, the vane may automatically move into the horizontal position.
Louver blades will automatically move into the horizontal position while
the unit is in the defrost mode, pre-heating stand-by mode, or when the
thermostat triggers unit off.

The fan stops during heating
operation.

Defrost

The fan remains stopped during defrost operation.

The fan keeps running after
the unit has stopped.

Unlit

When the auxiliary heater is turned on, the fan operates for one minute
after stopping to dissipate heat.

The fan speed does not reach
the set speed when operation
switch is turned on.

STAND BY

The fan operates at extra low speed for 5 minutes after it is turned on or
until the pipe temperature reaches 35°C[95°F], then it operates at low
speed for 2 minutes, and finally it operates at the set speed.
(Pre-heating stand-by)

When the main power is
turned on, the display shown
on the right appears on the in­door unit remote controller for
5 minutes.

"HO" or "PLEASE

WAIT" icons blink

on the display.

The system is starting up. Wait until the blinking display of "HO" or
"PLEASE WAIT" go off.

The drain pump keeps run­ning after the unit has
stopped.

Unlit

The drain pump stays in operation for three minutes after the unit in the
cooling mode is stopped.

The drain pump is running
while the unit is stopped.

When drain water is detected, the drain pump goes into operation even
while the unit is stopped.

Indoor unit and HBC controller
make noise during cooling/
heating changeover.

Normal display

This noise is made when the refrigerant circuit is reversed and is normal.

Sound of the refrigerant flow is
heard from the indoor unit im­mediately after starting opera­tion.

Normal display

This is caused by the transient instability of the refrigerant flow and is nor­mal.

Warm air sometimes comes
out of the indoor units that are
not in the heating mode.

Normal display

This is due to the fact that the LEVs on some of the indoor units are kept
slightly open to prevent the refrigerant in the indoor units that are not op­erating in the heating mode from liquefying and accumulating in the com­pressor. It is part of a normal operation.

The HBC controller makes re­frigerant flow noise during de­frost.

During defrost

This noise is produced by the high-pressure liquid refrigerant migrating
into the HBC and evaporating. (This noise is normal.)