Toshiba RAV-SM566KRT-TR, RAV-SM806KRT-TR, RAV-SM806KRT-E User Manual
SERVICE MANUAL
AIR-CONDITIONER
SPLIT TYPE
INDOOR UNIT
FILE NO. SVM-12004
High Wall Type
RAV-SM566KRT-E, RAV-SM806KRT-E
RAV-SM566KRT-TR, RAV-SM806KRT-TR
R410A
FILE NO. SVM-12004
Adoption of New Refrigerant
This Air Conditioner is a new type which adopts a new refrigerant HFC (R410A) instead of the conventional
refrigerant R22 in order to prevent destruction of the ozone layer.
CONTENTS
SAFETY CAUTION ............................................................................................ 3
1. SPECIFICATIONS .................................................................................... 12
1-1. High Wall Type ................................................................................................................. 12
2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)....................................... 13
3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM .............................. 15
4. WIRING DIAGRAM ................................................................................... 16
5. SPECIFICATIONS OF ELECTRICAL PARTS .......................................... 17
6. REFRIGERANT R410A ............................................................................ 18
6-1. Safety During Installation/Servicing............................................................................. 18
6-2. Refrigerant Piping Installation .................................................................................... 18
6-3. Tools ................................................................................................................................ 22
6-4. Recharging of Refrigerant ............................................................................................. 23
6-5. Brazing of Pipes ............................................................................................................. 24
7. INDOOR CONTROL CIRCUIT.................................................................. 26
7-1. Indoor Controller Block Diagram ................................................................................. 26
7-2. Control Specifications .................................................................................................. 28
7-3. Indoor Print Circuit Board (High Wall Type) ................................................................. 40
8. TROUBLESHOOTING .............................................................................. 42
8-1. Summary of Troubleshooting ....................................................................................... 42
8-2. Troubleshooting ............................................................................................................ 44
9. REPLACEMENT OF SERVICE P.C. BOARD............................................ 60
10. SETUP AT LOCAL SITE AND OTHERS .................................................. 66
11. ADDRESS SETUP.................................................................................... 83
11-1. Address Setup Procedure ............................................................................................. 83
11-2. Address Setup & Group/Twin/Triple Control ............................................................... 84
11-3. Address Setting ............................................................................................................. 86
12. DETACHMENTS ....................................................................................... 88
13. EXPLODED VIEWS AND PARTS LIST .................................................... 95
14. APPENDIX (Lite-vision plus remote controller Installation manual) ..... 97
– 2 –
Original instruction
FILE NO. SVM-12004
Please read carefully through these instructions that contain important information which complies with the
“Machinery” Directive (Directive 2006/42/EC), and ensure that you understand th em.
Generic Denomination: Air Conditioner
Definition of Qualified Installer or Qualified Service Person
The air conditioner must be installed, maintained, repaired a nd removed by a qualified installer or qualified service
person. When any of these jobs is to be done, ask a qualified installer or qualified service pe rson to do them for you.
A qualified installer or qualified service person is an agent who has the qualification s and kno wledge descr ibed in
the table below.
Agent Qualifications and knowledge which the agent must have
• The qualified installer is a person who installs, maintains, relocates and removes the air conditioners
made by Toshiba Carrier Corporation. He or she has been trained to install, maintain, relocate and
remove the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been
instructed in such operations by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to these operations.
• The qualified installer who is allowed to do the electrical work involved in installation, relocation and
removal has the qualifications pertaining to this electrical work as stipulated by the local laws and
regulations, and he or she is a person who has been trained in matters relating to electrical work on
the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been
instructed in such matters by an individual or individuals who have been trained and is thus thoroughly
Qualified installer
Qualified service
person
acquainted with the knowledge related to this work.
• The qualified installer who is allowed to do the refrigerant handling and piping work involved in
installation, relocation and removal has the qualifications pertaining to this refrigerant handling and
piping work as stipulated by the local laws and regulations, and he or she is a person who has been
trained in matters relating to refrigerant handling and piping work on the air conditioners made by
Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an
individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge
related to this work.
• The qualified installer who is allowed to work at heights has been trained in matters relating to working
at heights with the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she
has been instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
• The qualified service person is a person who installs, repairs, maintains, relocates and removes the
air conditioners made by Toshiba Carrier Corporation. He or she has been traine d to install, repair,
maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such operations by an individual or individuals who have
been trained and is thus thoroughly acquainted with the knowledge related to these operations.
• The qualified service person who is allowed to do the electrical work involved in installation, repair,
relocation and removal has the qualifications pertaining to this electrical work as stipulated by the local
laws and regulations, and he or she is a person who has been trained in matters relating to electrical
work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been
instructed in such matters by an individual or individuals who have been trained and is thus thoroughly
acquainted with the knowledge related to this work.
• The qualified service person who is allowed to do the refrigerant handling and piping work involved in
installation, repair, relocation and removal has the qualifications pertaining to this refrigerant handling
and piping work as stipulated by the local laws and regulations, and he or she is a person who has
been trained in matters relating to refrigerant handling and piping work on the air conditioners made
by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an
individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge
related to this work.
• The qualified service person who is allowed to work at heights has been trained in matters relating to
working at heights with the air conditioners made by Toshiba Carrier Corporation or, alternatively, he
or she has been instructed in such matters by an individual or individuals who have been trained and
is thus thoroughly acquainted with the knowledge related to this work.
– 3 –
FILE NO. SVM-12004
Definition of Protective Gear
When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves
and ‘safety’ work clothing.
In addition to such normal protective gear, wear the protective gear described bel ow when undertaking the special
work detailed in the table below.
Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns,
electric shocks and other injuries.
Work undertaken Protective gear worn
All types of work
Electrical-related work
Work done at heights
(50 cm or more)
Transportation of heavy objects Shoes with additional protective toe cap
Repair of outdoor unit Gloves to provide protection for electricians and from heat
The important contents concerned to the safety are described on the product itself and on this Service Manual.
Please read this Service Manual after understanding the described items thoroughly in the following contents
(Indications / Illustrated marks), and keep the m .
Protective gloves
‘Safety’ working clothing
Gloves to provide protection for electricians and from heat
Insulating shoes
Clothing to provide protection from electric shock
Helmets for use in industry
[Explanation of indications]
Indication Explanation
DANGER
WARNING
CAUTION
Indicates contents assumed that an imminent danger causing a death or serious injury of
the repair engineers and the third parties when an incorrect work has been executed.
Indicates possibilities assumed that a danger causing a death or serious injury of the
repair engineers, the third parties, and the users due to troubles of the product after work
when an incorrect work has been executed.
Indicates contents assumed that an injury or property damage (*) may be caused on the
repair engineers, the third parties, and the users due to troubles of the product after work
when an incorrect work has been executed.
* Property damage: Enlarged damage concerned to property, furniture, and domestic animal / pet
[Explanation of illustrated marks]
Mark Explanation
Indicates prohibited items (Forbidden items to do)
The sentences near an illustrated mark describe the concrete prohibited contents.
Indicates mandatory items (Compulsory items to do)
The sentences near an illustrated mark describe the concrete mandatory contents.
Indicates cautions (Including danger / warning)
The sentences or illustration near or in an illustrated mark describe the concrete cautious contents.
– 4 –
Warning Indications on the Air Conditioner Unit
[Confirmation of warning label on the main unit]
Confirm that labels are indicated on the specified positions
If removing the label during parts replace, stick it as the original.
Warning indication Description
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect all remote electric power supplies before servicing.
WARNING
Moving parts.
Do not operate unit with grille removed.
Stop the unit before the servicing.
FILE NO. SVM-12004
CAUTION
High temperature parts.
You might get burned when removing this panel.
CAUTION
Do not touch the aluminium fins of the unit.
Doing so may result in injury.
CAUTION
BURST HAZARD
Open the service valves before the operation, otherwise t here might be the
burst.
– 5 –
FILE NO. SVM-12004
Precautions for safety
The manufacturer shall not assume any liability for the damage caused by not observing the description of this
manual.
DANGER
Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker for
both the indoor and outdoor units to the OFF position. Otherwise, electric shocks may result.
Before opening the front panel of the indoor unit or service panel of the outdoor unit, set the circuit breaker to
the OFF position.
Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the interior
parts.
Only a qualified installer (*1) or qualified service person (*1) is allowed to remove the front panel of the indoor
Turn off
breaker.
unit or service panel of the outdoor unit and do the work required.
Before starting to repair the outdoor unit fan or fan guard, be absolutely sure to set the circuit breaker to the
OFF position, and place a “Work in progress” sign on the circuit breaker.
When cleaning the filter or other parts of the indoor unit, set the circuit breaker to OFF without fail, and place a
“Work in progress” sign near the circuit breaker before proceeding with the work.
Prohibition
Stay on
protection
Execute
discharge
between
terminals.
Place a “Work in progress” sign near the circuit breaker while the installation, maintenance, repair or removal
work is being carried out.
There is a danger of electric shocks if the circuit breaker is set to ON by mistake.
If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts with
the electrical control box cover of one or more of the indoor units and the service panel of the outdoor unit
removed in order to find out exactly where the trouble lies, wear insulated heat-resistant gloves, insulated boots
and insulated work overalls, and take care to avoid touching any live parts.
You may receive an electric shock if you fail to heed this warning. Only qualified service person (*1) is allowed
to do this kind of work.
Even if the circuit breaker has been set to the OFF position before the service panel is removed and the
electrical parts are repaired, you will still risk receiving an electric shock.
For this reason, short-circuit the high-voltage capacitor terminals to discharge the voltage before proceeding
with the repair work.
For details on the short-circuiting procedure, refer to the Service Manual.
You may receive an electric shock if the voltage stored in the capacitors has not been sufficiently discharged.
– 6 –
WARNING
General
FILE NO. SVM-12004
Before starting to repair the air conditioner, read carefully through the Service Manual, and repair the air
conditioner by following its instructions.
Only qualified service person (*1) is allowed to repair the air conditioner.
Repair of the air conditioner by unqualified person may give rise to a fire, electric shocks, injury, water leaks
and/or other problems.
Do not use any refrigerant different from the one specified for complement or replacement.
Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may result in a failure
or explosion of the product or an injury to your body.
Only a qualified installer (*1) or qualified service person (*1) is allowed to carry out the electrical work of the air
conditioner.
Under no circumstances must this work be done by an unqualified individual since failure to carry out the work
properly may result in electric shocks and/or electrical leaks.
When transporting the air conditioner, wear shoes with protective toe caps, protective gloves and other
protective clothing.
Inside the air conditioner are high-voltage areas and rotating parts. Due to the danger of electric shocks or of
your fingers or physical objects becoming trapped in the rotating parts, do not remove the front panel of the
indoor unit or service panel of the outdoor unit. When work involving the removal of these parts is required,
contact a qualified installer(*1) or a qualified service person(*1).
When connecting the electrical wires, repairing the electrical parts or undertaking other electrical jobs, wear
gloves to provide protection for electricians and from heat, insulating shoes and clothing to provide protection
from electric shocks.
Failure to wear this protective gear may result in electric shocks.
When checking the electrical parts, removing the cover of the electrical control box of Indoor Unit and/or service
panel of Outdoor Unit inevitably to determine the failure, use gloves to provide protection for electricians and
from heat, insulating shoes, clothing to provide protection from electric shock and insulating tools. Do not touch
the live part. Electric shock may result. Only "Qualified service person (*1)" is allowed to do this work.
When checking the electrical parts, removing the cover of the electrical control box of Indoor Unit and/or front
panel of Outdoor Unit inevitably to determine the failure, put a sign "Do not enter" aro und the site before the
work. Failure to do this may result in third person getting electric shock.
Electrical wiring work shall be conducted according to law and regulation in the community and installation
manual. Failure to do so may result in electrocution or short circuit.
Only a qualified installer (*1) or qualified service person (*1) is allowed to undertake work at heights using a
stand of 50 cm or more or to remove the front panel of the indoor unit to undertake work.
When working at heights, use a ladder which complies with the ISO 14122 standard, and follow the procedure
in the ladder’s instructions.
Also wear a helmet for use in industry as protective gear to undertake the work.
When working at heights, put a sign in place so that no-one will approach the work location, before proceeding
with the work.
Parts and other objects may fall from above, possibly injuring a person below.
While carrying out the work, wear a helmet for protection from falling objects.
Wear protective gloves and safety work clothing during installation, servicing and removal.
Do not touch the aluminum fin of the outdoor unit.
You may injure yourself if you do so. If the fin must be touched for some reason, first put on protective gloves
and safety work clothing, and then proceed.
Do not climb onto or place objects on top of the outdoor unit.
You may fall or the objects may fall off of the outdoor unit and resul t in injury.
When transporting the air conditioner, wear shoes with additional protective toe caps.
When transporting the air conditioner, do not take hold of the bands around the packing carton.
You may injure yourself if the bands should break.
Use wiring that meets the specifications in the Installation Manual and the stipulations in the local regulations
and laws. Use of wiring which does not meet the specifications may give rise to electric shocks, electrical
leakage, smoking and/or a fire.
This air conditioner has passed the pressure test as specified in IEC 60335-2-40 Annex EE.
– 7 –
Check earth
wires.
Prohibition of
modification.
Use specified
parts.
Do not bring a
child close to
the
equipment.
FILE NO. SVM-12004
Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main unit,
otherwise an electric shock is caused when a leak occurs.If the earth wire is not correctly connected, contact
an electric engineer for rework.
After completing the repair or relocation work, check that the ground wires are connected properly.
Be sure to connect earth wire. (Grounding work) Incomplete grounding causes an electric shock.
Do not connect ground wires to gas pipes, water pipes, and lightning rods or ground wires for telephone wires.
Do not modify the products.Do not also disassemble or modify the parts.
It may cause a fire, electric shock or injury.
When any of the electrical parts are to be replaced, ensure that the replacement parts satisfy the specifications
given in the Service Manual (or use the parts contained on the parts list in the Service Manual).
Use of any parts which do not satisfy the required specifications may give rise to electric shocks, smoking and/
or a fire.
If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts with
the electrical control box cover of one or more of the indoor units and the service panel of the outdoor unit
removed in order to find out exactly where the trouble lies, put a sign in place so that no-one will approach the
work location before proceeding with the work. Third-party individuals may enter the work site and receive
electric shocks if this warning is not heeded.
Insulating
measures
No fire
Refrigerant
Connect the cut-off lead wires with crimp contact, etc., put the closed end side upward and then apply a watercut method, otherwise a leak or production of fire is caused at the users’ side.
When performing repairs using a gas burner, replace the refrigerant with nitrogen gas because the oil that coats
the pipes may otherwise burn.
When repairing the refrigerating cycle, take the following measures.
1) Be attentive to fire around the cycle. When using a gas stove, etc., be sure to put out fire before work;
otherwise the oil mixed with refrigerant gas may catch fire.
2) Do not use a welder in the closed room. When using it without ventilation, carbon monoxide poisoning may
be caused.
3) Do not bring inflammables close to the refrigerant cycle, otherwise fire of the welder may catch the
inflammables.
The refrigerant used by this air conditioner is the R410A.
Check the used refrigerant name and use tools and materials of the parts which match with it.
For the products which use R410A refrigerant, the refrigerant name is indicated at a position on the outdoor unit
where is easy to see. To prevent miss-charging, the route of the service port is changed from one of the former
R22.
For an air conditioner which uses R410A, never use other refrigerant than R410A. For an air conditioner which
uses other refrigerant (R22, etc.), never use R410A.
If different types of refrigerant are mixed, abnormal high pressure generates in the refrigerating cycle and an
injury due to breakage may be caused.
Do not charge refrigerant additionally. If charging refrigerant additionally when refrigerant gas leaks, the
refrigerant composition in the refrigerating cycle changes resulted in change of air conditioner characteristics or
refrigerant over the specified standard amount is charged and an abnormal high pressure is applied to the inside
of the refrigerating cycle resulted in cause of breakage or injury. Therefore if the refrigerant gas leaks, recover
the refrigerant in the air conditioner, execute vacuuming, and then newly recharge the specified amount of liquid
refrigerant.
In this time, never charge the refrigerant over the specified amount.
When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant or air other than R410A into
the specified refrigerant. If air or others is mixed with the refrigerant, abnormal hig h pressure generates in the
refrigerating cycle resulted in cause of injury due to breakage.
After installation work, check the refrigerant gas does not leak. If the refrigerant gas leaks in the room,
poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the
refrigerant gas itself is innocuous.
Never recover the refrigerant into the outdoor unit. When the equipment is moved or repaired, be sure to recover
the refrigerant with recovering device.
The refrigerant cannot be recovered in the outdoor unit; otherwise a serious accident such as breakage or injury
is caused.
– 8 –
Assembly /
Wiring
Insulator
check
Ventilation
Compulsion
Check after
repair
FILE NO. SVM-12004
After repair work, surely assemble the disassembled parts, and connect and lead the removed wires as before.
Perform the work so that the cabinet or panel does not catch the inner wires.
If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is caused at user’s
side.
After the work has finished, be sure to use an insulation tester set (500 V Megger) to check the resistance is
1 MΩ or more between the charge section and the non-charge metal section (Earth position).
If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.
If refrigerant gas has leaked during the installation work, ventilate the room immediately. If the leaked refrigerant
gas comes in contact with fire, noxious gas may generate.
When the refrigerant gas leaks, find up the leaked position and repair it surely.
If the leaked position cannot be found up and the repair work is interrupted, pump-down and tighten the service
valve, otherwise the refrigerant gas may leak into the room.
The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the
refrigerant gas itself is innocuous.
When installing equipment which includes a large amount of charged refrigerant such as a multi air conditioner
in a sub-room, it is necessary that the density does not the limit even if the refrigerant leaks.
If the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is caused.
Tighten the flare nut with a torque wrench in the specified manner.
Excessive tighten of the flare nut may cause a crack in the flare nut after a long period, which may result in
refrigerant leakage.
Nitrogen gas must be used for the airtight test.
The charge hose must be connected in such a way that it is not slack.
For the installation / moving / reinstallation work, follow to the Installation Manual.
If an incorrect installation is done, a trouble of the refrigerating cycle, water leak, electric shock or fire is caused.
Before operating the air conditioner after having completed the work, check that the electrical control box cover
of the indoor unit and service panel of the outdoor unit are closed, and set the circuit breaker to the ON position.
You may receive an electric shock if the power is turned on without first conducting these checks.
Once the repair work has been completed, check for refrigerant leaks, and check the insulation resistance and
water drainage.
Then perform a trial run to check that the air conditioner is running properly.
After repair work has finished, check t here i s no trou ble. If check is not executed, a fire, electric shock or injury
may be caused. For a check, turn off the power breaker.
After repair work (installation of front panel and cabinet) has finished, execute a test run to check there is no
generation of smoke or abnormal sound.
If check is not executed, a fire or an electric shock is caused. Before test run, install the front panel and cabinet.
Be sure to fix the screws back which have been removed for installation or other purposes.
Do not
operate the
unit with the
valve closed.
Check after
reinstallation
Check the following matters before a test run after repairing piping.
• Connect the pipes surely and there is no leak of refrigerant.
• The valve is opened.
Running the compressor under condition that the valve closes causes an abnormal high pressure resulted in
damage of the parts of the compressor and etc. and moreover if there is leak of refrigerant at connecting section
of pipes, the air is sucked and causes further abnormal high pressure resulted in burst or injury.
Only a qualified installer (*1) or qualified service person (*1) is allowed to relocate the air conditioner. It is
dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric shocks, injury,
water leakage, noise and/or vibration may result.
Check the following items after reinstallation.
1) The earth wire is correctly connected.
2) The power cord is not caught in the product.
3) There is no inclination or unsteadiness and the installation is stable.
If check is not executed, a fire, an electric shock or an injury is caused.
When carrying out the pump-down work shut down the compressor before disconnecting the refrigerant pipe.
Disconnecting the refrigerant pipe with the service valve left open and the compressor still operating will cause
air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level, and
possibly resulting in reputing, injury, etc.
– 9 –
Cooling check
Installation
FILE NO. SVM-12004
When the service panel of the outdoor unit is to be opened in order for the compressor or the area around this
part to be repaired immediately after the air conditioner has been shut down, set the circuit breaker to the OFF
position, and then wait at least 10 minutes before opening the service panel.
If you fail to heed this warning, you will run the risk of burning yourself because the compressor pipes and other
parts will be very hot to the touch. In addition, before proceeding with the repair work, wear the kind of insulated
heat-resistant gloves designed to protect electricians.
When the service panel of the outdoor unit is to be opened in order for the fan motor, reactor, inverter or the
areas around these parts to be repaired immediately after the air conditioner has been shut down, set the circuit
breaker to the OFF position, and then wait at least 10 minutes before opening the service panel.
If you fail to heed this warning, you will run the risk of burning yourself because the fan motor, reactor, inverter
heat sink and other parts will be very hot to the touch.
In addition, before proceeding with the repair work, wear the kind of insulated heat-resistant gloves designed to
protect electricians.
Only a qualified installer (*1) or qualified service person (*1) is allowed to install the air conditioner. If the air
conditioner is installed by an unqualified individual, a fire, electric shocks, injury, water leakage, noise and/or
vibration may result.
Before starting to install the air conditioner, read carefully through the Installation Manual , and follow its
instructions to install the air conditioner.
Do not install the air conditioner in a location that may be subject to a risk of expire to a combustible gas.
If a combustible gas leaks and becomes concentrated around the unit, a fire may occur.
Install the indoor unit at least 2.0 m above the floor level since otherwise the users may injure themselves or
receive electric shocks if they poke their fingers or other objects into the indoor unit while the air conditioner is
running.
Install a circuit breaker that meets the specifications in the installation manual and the stipulations in the local
regulations and laws.
Install the circuit breaker where it can be easily accessed by the qualified service person (*1).
If the unit is installed in a small room, take appropriate measures to prevent the refrigerant from exceeding the
limit concentration even if it leaks. Consult the dealer from whom you purchased the air conditioner when you
implement the measures. Accumulation of highly concentrated refrigerant may cause an oxygen deficiency
accident.
Do not place any combustion appliance in a place where it is directly exposed to the wind of air conditioner,
otherwise it may cause imperfect combustion.
Explanations given to user
If you have discovered that the fan grille is damaged, do not approach the outdoor unit but set the circuit breaker
to the OFF position, and contact a qualified service person to have the repairs done .
Do not set the circuit breaker to the ON position until the repairs are completed.
Relocation
• Only a qualified installer (*1) or qualified service person (*1) is allowed to relocate the air conditioner.
It is dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric shocks,
injury, water leakage, noise and/or vibration may result.
• When carr ying ou t the pum p-d own work shut down the compressor before disconnecting the refrigerant pipe.
Disconnecting the refrigerant pipe with the service valve left open and the compressor still operating will cause
air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level, and
possibly resulting in reputing, injury, etc.
(*1) Refer to the “Definition of Qualified Installer or Qualified Service Person”
– 10 –
Declaration of Conformity
FILE NO. SVM-12004
Manufacturer: TOSHIBA CARRIER (THAILAND) CO., LTD.
Authorized Nick Ball
Representative / TCF holder: Toshiba EMEA Engineering Director
Hereby declares that the machinery described below:
Generic Denomination: Air Conditioner
Model / type: RAV-SM566KRT-E, RAV-SM806KRT-E
Commercial name: Digital Inverter Series / Super Digital Inverter Series Air Conditioner
Complies with the provisions of the “Machinery” Directive (Directive 2006/42/EC) and the regulations transposing into national law.
Complies with the provisions of the following harmonized standard:
144/9 Moo 5, Bangkadi Industrial Park, Tivanon Road,
Amphur Muang, Pathumthani 12000, Thailand
Toshiba Carrier UK Ltd.
Porsham Close, Belliver Industrial Estate,
PLYMOUTH, Devon, PL6 7DB.
United Kingdom
RAV-SM566KRT-TR, RAV-SM806KRT-TR
EN 378-2: 2008 + A1: 2009
NOTE
This declaration becomes invalid if technical or operational modifications are introduced without the manufacturer ’s
consent.
Specifications
Model
RAV-SM566KRT-E ✽✽ 12
RAV-SM806KRT-E ✽✽ 12
RAV-SM566KRT-TR ✽✽ 12
RAV-SM806KRT-TR ✽✽ 12
✽ Under 70 dBA
Sound power level (dBA) Weight (kg)
Cooling Heating Main unit (Ceiling panel)
– 11 –
1-1. High-wall type
FILE NO. SVM-12004
1. SPECIFICATIONS
Model
Indoor unit RAV-SM
Outdoor unit RAVCooling Capacity (kW)
Heating Capacity (kW)
Power Supply
Running current (A)
Power consumption (kW)
Cooling
Electrical
Characteristics
Heating
Maximum current (A)
Appearance
Outer dimension
Total weight
Heat exchanger
Fan unit
Air filter
Controller (packed with inndoor unit)
Controller (sold separately)
Sound pressure level
Sound power level
Connecting pipe
Main unit
Main unit
Main unit (kg)
Fan
Standard air flow H/M/L (m3/min.)
Motor (W)
Power factor (%)
EER
Energy efficiency class ※
Energy rating ※※
Running current (A)
Power consumption (kW)
Power factor (%)
COP
Energy efficiency class ※
Energy rating ※※
Height (mm)
Width (mm)
Depth (mm)
H/M/L (dB・A)
H/M/L (dB・A)
Gas side (mm)
Liquid side (mm)
Drain port (mm)
566KRT-E(TR) 806KRT-E(TR) 566KRT-E(TR) 806KRT-E(TR)
SP564AT(Z)(ZG)-E SP804AT(Z)(ZG)-E
SM563AT-E SM803AT-E
5.0 7.1 5.0 6.7
5.6 8.0 5.6 8.0
1 phase 230V (220-240V) 50Hz
6.74-6.18 10.71-9.82 7.77-7.12 11.18-10.25
1.44 2.21 1.66 2.37
99 96 98 99
3.47 3.21 3.01 2.83
AABC
----
6.98-6.40 11.02-10.10 7.60-6.96 11.88-10.89
1.50 2.34 1.64 2.49
99 96 98 99
3.73 3.42 3.41 3.21
ABBC
----
13.4 20.4 12.3 14.4
Moon white
320 320 320 320
1050 1050 1050 1050
228 228 228 228
12 12 12 12
Finned tube
Cross flow fan
14.0/12.5/11.0 17.0/12.5/11.0 14.0/12.5/11.0 17.0/12.5/11.0
30 30 30 30
Standard filter attached
WH-L11SE
RBC-AMT32E,AS21E2,AMS41E,AMS51E
42/39/36 47/41/36 42/39/36 47/41/36
57/54/51 62/56/51 57/54/51 62/56/51
12.7 15.9 12.7 15.9
6.4 9.5 6.4 9.5
VP16
※IEC Standard ※※AS Standard
– 12 –
2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)
2-1. 4-Way Air Discharge Cassette Type
RAV-SM566KRT-E(TR)
FILE NO. SVM-12004
– 13 –
RAV-SM806KRT-E(TR)
FILE NO. SVM-12004
– 14 –
3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM
High Wall Type
• Single type (Combination of 1 indoor unit and 1 outdoor unit)
FILE NO. SVM-12004
Dimension table
Distributor
(Strainer incorporated)
To outdoor unit
Indoor unit
TC sensor
Refrigerant pipe
at liquid side
(Outer dia : ØB)
(Indoor unit)
TCJ sensor
Air heat
exchanger
Heating
Cooling
Refrigerant pipe
at gas side
(Outer dia : ØA)
To outdoor unit
Outer diameter of refrigerant pipe (In (mm))
Gas side ØA Liquid side ØB
SM56 type
SM80 type
12.7 6.4
15.9 9.5
– 15 –
4-1. High Wall Type
4. WIRING DIAGRAM
COLOR
YEL : YELLOW
RED : RED
BLU : BLUE
WHI : WHITE
IDENTIFICATION
B
A
BLU
BLU
1
CN40
2
(BLU)
BLK
BLK
1
321
321
CN41
(BLU)
CN100
(BRW)
CN101
2
(BLU)
CONTROLLER
WIREDREMOTE
2
1
(GRN)
CN103
1
CN102
PNK : PINK
BRW : BROWN
BLK : BLACK
ORN : ORANGE
GRY : GRAY
GRN : GREEN
2
2
1
(YEL)
(WHI)
CN104
FILE NO. SVM-12004
(WHI)
OPTION
(WHI)
CN50
indicates the connection terminal.
indicates the connector on the control P.C. board.
short dashed line indicate the accessories.
1.Broken line indicate the wiring at site. Long dashed
2. indicates the terminal block.
FM
LM
M
BLK
12345
(BRW)
DC15V
DC12V
DC 7V
DC20V
12
3. indicates the protection ground.
CN44
4. indicates the control P.C. board.
POWER
CIRCUIT
CN67
U
(BLK)
SUPPLY
‑
+
+
‑
(WHI)
CN213
12345678910
5
3
1
RED
WHI
BLK
CN309
7
(YEL)
321
Control P.C. board for indoor unit
CN22
(WHI)
CN210
13456
(WHI)
CN33
123456
CN60
123456
(YEL)
CN61
123456
(BLK)
CN81
(MCC‑1510)
12345
(BLU)
CN82
123456
CN32
(WHI)
(GRN)
2
1
123
PNL/EMG
CN80
(MCC‑5044)
ANDINDICATIONPARTS
INFRAREDRAYSRECEIVE
1234567891011
Earth
SCREW
1 2 3
TB01
Earth
SCREW
60Hz1220V
50Hz1220‑240V
(SINGLEPHASE)
N
L
1 2 3
POWERSUPPLY
OUTDOORUNIT
Earth
SCREW
N
1 2 3
1 2 3
L LL
60Hz3N380V
50Hz3N380‑415V
POWERSUPPLY
(3‑PHASE)
OUTDOORUNIT
– 16 –
5. SPECIFICATIONS OF ELECTRICAL PARTS
5-3. High Wall Type
FILE NO. SVM-12004
No.
1
Fan motor (for indoor)
2
Grille motor
3
Thermo. Sensor (TA sensor)
4
Heat exchanger sensor (TC sensor)
5
Heat exchanger sensor (TCJ sensor)
Parts Name
n Name of Each Part
Air outlet / Louver
Change the direction of the air to be
discharged according to cool/heat mode.
Type
ICF-340-U30-1
ICF-340-30X
MF-340-30X
MP24Z3T
318mm
Ø6,800mm
Ø6,800mm
Specications
Output (Rated) 30W, 340V DC
Output (Rated) 1W, 16 poles DC
10kΩ at 25°C
10kΩ at 25°C
10kΩ at 25°C
Air inlet grille
Air in the room is sucked from here.
Air filter
Removes dirt or dust.
(Provided in the air inlet grille)
Earth screw
Earth screws are provided
in the electric parts box.
TEMPORARY button
– 17 –
6. REFRIGERANT R410A
FILE NO. SVM-12004
This air conditioner adopts the new refrigerant HFC
(R410A) which does not damage the ozone layer.
The working pressure of the new refrigerant R410A
is 1.6 times higher than conventional refrigerant
(R22). The refrigerating oil is also changed in
accordance with change of refrigerant, so be careful
that water, dust, and existing refrigerant or refrigerating oil are not entered in the refrigerant cycle of
the air conditioner using the new refrigerant during
installation work or servicing time.
The next section describes the precautions for air
conditioner using the new refrigerant.
Conforming to contents of the next section together
with the general cautions included in this manual,
perform the correct and safe work.
6-1. Safety During Installation/Servicing
As R410A’s pressure is about 1.6 times higher than
that of R22, improper installation/servicing may
cause a serious trouble. By using tools and materials exclusive for R410A, it is necessary to carry out
installation/servicing safely while taking the following precautions into consideration.
1. Never use refrigerant other than R410A in an air
conditioner which is designed to operate with
R410A. If other refrigerant than R410A is mixed,
pressure in the refrigeration cycle becomes
abnormally high, and it may cause personal
injury, etc. by a rupture.
2. Confirm the used refrigerant name, and use
tools and materials exclusive for the refrigerant
R410A. The refrigerant name R410A is indicated
on the visible place of the outdoor unit of the air
conditioner using R410A as refrigerant.
To prevent mischarging, the diameter of the
service port differs from that of R22.
3. If a refrigeration gas leakage occurs during
installation/servicing, be sure to ventilate fully.
If the refrigerant gas comes into contact with fire,
a poisonous gas may occur.
4. When installing or removing an air conditioner,
do not allow air or moisture to remain in the
refrigeration cycle.
Otherwise, pressure in the refrigeration cycle
may become abnormally high so that a rupture
or personal injury may be caused.
5. After completion of installation work, check to
make sure that there is no refrigeration gas
leakage. If the refrigerant gas leaks into the
room, coming into contact with fire in the fandriven heater, space heater, etc., a poisonous
gas may occur.
6. When an air conditioning system charged with a
large volume of refrigerant is installed in a small
room, it is necessary to exercise care so that,
even when refrigerant leaks, its concentration
does not exceed the marginal level.
If the refrigerant gas leakage occurs and its
concentration exceeds the marginal level, an
oxygen starvation accident may result.
7. Be sure to carry out installation or removal
according to the installation manual.
Improper installation may cause refrigeration
trouble, water leakage, electric shock, fire, etc.
8. Unauthorized modifications to the air conditioner
may be dangerous.
If a breakdown occurs please call a qualified air
conditioner technician or electrician.
Improper repair may result in water leakage,
electric shock and fire, etc.
6-2. Refrigerant Piping Installation
6-2-1. Piping Materials and Joints Used
For the refrigerant piping installation, copper pipes
and joints are mainly used. Copper pipes and joints
suitable for the refrigerant must be chosen and
installed. Furthermore, it is necessary to use clean
copper pipes and joints whose interior surfaces are
less affected by contaminants.
1. Copper Pipes
It is necessary to use seamless copper pipes
which are made of either copper or copper alloy
and it is desirable that the amount of residual oil
is less than 40 mg/10 m.
Do not use copper pipes having a collapsed,
deformed or discolored portion (especially on the
interior surface).
Otherwise, the expansion valve or capillary tube
may become blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than when using R22, it is necessary
to choose adequate materials.
Thicknesses of copper pipes used with R410A
are as shown in Table 6-2-1.
Never use copper pipes thinner than 0.8 mm
even when it is available on the market.
– 18 –
Table 6-2-1 Thicknesses of annealed copper pipes
Thickness (mm)
FILE NO. SVM-12004
Nominal diameter
1/4
3/8
1/2
5/8
Outer diameter (mm)
6.35
9.52
12.70
15.88
R410A R22
0.80 0.80
0.80 0.80
0.80 0.80
1.00 1.00
2. Joints
For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants.
a) Flare Joints
Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds
20 mm. In such a case, socket joints can be used.
Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 6-2-3 to 6-2-6 below.
b) Socket Joints
Socket joints are such that they are brazed for connections, and used mainly for thick pipings whose
diameter is larger than 20 mm.
Thicknesses of socket joints are as shown in Table 6-2-2.
Table 6-2-2 Minimum thicknesses of socket joints
Nominal diameter
1/4
3/8
1/2
5/8
Reference outer diameter of
copper pipe jointed (mm)
6.35
9.52
12.70
15.88
Minimum joint thickness
(mm)
0.50
0.60
0.70
0.80
6-2-2. Processing of Piping Materials
When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not
enter the pipe interior, that no other oil than lubricating oils used in the installed air-water heat pump is used,
and that refrigerant does not leak.
When using lubricating oils in the piping processing, use such lubricating oils whose water content has been
removed. When stored, be sure to seal the container with an airtight cap or any other cover.
1. Flare processing procedures and precautions
a) Cutting the Pipe
By means of a pipe cutter, slowly cut the pipe so that it is not deformed.
b) Removing Burrs and Chips
If the flared section has chips or burrs, refrigerant leakage may occur.
Carefully remove all burrs and clean the cut surface before installation.
c) Insertion of Flare Nut
– 19 –
d) Flare Processing
Make certain that a clamp bar and copper
pipe have been cleaned.
By means of the clamp bar, perform the flare
processing correctly.
Use either a flare tool for R410A or conventional flare tool.
Flare processing dimensions differ according
to the type of flare tool.
When using a conventional flare tool, be sure
to secure “dimension A” by using a gauge for
size adjustment.
Table 6-2-3 Dimensions related to flare processing for R410A
FILE NO. SVM-12004
ØD
A
Fig. 6-2-1 Flare processing dimensions
Nominal
diameter
1/4
3/8
1/2
5/8
Nominal
diameter
1/4
3/8
Outer
diameter
(mm)
6.35
9.52
12.70
15.88
Table 6-2-4 Dimensions related to flare processing for R22
Outer
diameter
(mm)
6.35
9.52
Thickness
(mm)
0.8
0.8
0.8
1.0
Thickness
(mm)
0.8
0.8
Flare tool for R410A
clutch type
0 to 0.5 1.0 to 1.5 1.5 to 2.0
0 to 0.5 1.0 to 1.5 1.5 to 2.0
0 to 0.5 1.0 to 1.5 2.0 to 2.5
0 to 0.5 1.0 to 1.5 2.0 to 2.5
Flare tool for R22
clutch type
0 to 0.5 0.5 to 1.0 1.0 to 1.5
0 to 0.5 0.5 to 1.0 1.0 to 1.5
A (mm)
Conventional flare tool
Clutch type Wing nut type
A (mm)
Conventional flare tool
Clutch type Wing nut type
1/2
5/8
Nominal
diameter
1/4
3/8
1/2
5/8
12.70
15.88
Table 6-2-5 Flare and flare nut dimensions for R410A
Outer diameter
(mm)
6.35
9.52
12.70
15.88
0.8
1.0
Thickness
(mm)
0.8
0.8
0.8
1.0
– 20 –
0 to 0.5 0.5 to 1.0 1.5 to 2.0
0 to 0.5 0.5 to 1.0 1.5 to 2.0
Dimension (mm)
ABCD
9.1 9.2 6.5 13
13.2 13.5 9.7 20
16.6 16.0 12.9 23
19.7 19.0 16.0 25
Flare nut width
(mm)
17
22
26
29
Table 6-2-6 Flare and flare nut dimensions for R22
FILE NO. SVM-12004
Nominal
diameter
1/4
3/8
1/2
5/8
3/4
Outer diameter
(mm)
6.35
9.52
12.70
15.88
19.05
45˚ to 46˚
Thickness
(mm)
0.8
0.8
0.8
1.0
1.0
B A
Dimension (mm)
ABCD
9.0 9.2 6.5 13
13.0 13.5 9.7 20
16.2 16.0 12.9 20
19.7 19.0 16.0 23
23.3 24.0 19.2 34
D
C
43˚ to 45˚
Flare nut width
(mm)
17
22
24
27
36
Fig. 6-2-2 Relations between flare nut and flare seal surface
2. Flare Connecting Procedures and Precautions
a) Make sure that the flare and union portions do not have any scar or dust, etc.
b) Correctly align the processed flare surface with the union axis.
c) Tighten the flare with designated torque by means of a torque wrench.
The tightening torque for R410A is the same as that for conventional R22.
Incidentally, when the torque is weak, the gas leakage may occur.
When it is strong, the flare nut may crack and may be made non-removable. When choosing the
tightening torque, comply with values designated by manufacturers. Table 6-2-7 shows reference
values.
NOTE :
When applying oil to the flare surface, be sure to use oil designated by the manufacturer.
If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.
Table 6-2-7 Tightening torque of flare for R410A [Reference values]
Nominal
diameter
Outer diameter
(mm)
Tightening torque
N•m (kgf•cm)
Tightening torque of torque
wrenches available on the market
N•m (kgf•cm)
1/4
3/8
1/2
5/8
6.35
9.52
12.70
15.88
14 to 18 (140 to 180)
33 to 42 (330 to 420)
50 to 62 (500 to 620)
63 to 77 (630 to 770)
– 21 –
16 (160), 18 (180)
42 (420)
55 (550)
65 (650)
FILE NO. SVM-12004
6-3. Tools
6-3-1. Required Tools
The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R410A is
changed to prevent mixing of other refrigerant.
To reinforce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare
nut (For Ø12.7 copper pipe) of the refrigerant piping are lengthened.
The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge,
clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.
1. Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))
2. Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)
3. Tools commonly used for R410A and for conventional refrigerant (R22)
The table below shows the tools exclusive for R410A and their interchangeability.
Tools exclusive for R410A (The following tools for R410A are required.)
Tools whose specifications are changed for R410A and their interchangeability
air-water heat pump installation
No.
1
Flare tool
Copper pipe gauge for
2
adjusting projection margin
3
Torque wrench
4
Gauge manifold
5
Charge hose
6
Vacuum pump adapter
Electronic balance for
7
refrigerant charging
8
Refrigerant cylinder
9
Leakage detector
10
Charging cylinder
(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection
(Note 2) Charging cylinder for R410A is being currently developed.
Used tool
Pipe flaring
Flaring by
conventional flare tool
Connection of flare nut
Evacuating, refrigerant
charge, run check, etc.
Vacuum evacuating
Refrigerant charge
Refrigerant charge
Gas leakage check
Refrigerant charge
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
Usage
Existence of Whether conventional
new equipment equipment can be
for R410A used
Yes ∗ (Note 1)
Yes ∗ (Note 1)
Yes
Yes
Yes
Yes
Yes
Yes
(Note 2)
R410A
×
×
×
×
×
×
×
Conventional air-water
heat pump installation
Whether new equipment
can be used with
conventional refrigerant
¡
∗ (Note 1)
×
×
¡
¡
×
¡
×
General tools (Conventional tools can be used.)
In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary as
the general tools.
1) Vacuum pump 7) Screwdriver (+, –)
Use vacuum pump by attaching vacuum pump adapter. 8) Spanner or Monkey wrench
2) Torque wrench 9) Hole core drill (Ø65)
3) Pipe cutter 10) Hexagon wrench (Opposite side 4mm)
4) Reamer 11) Tape measure
5) Pipe bender 12) Metal saw
6) Level vial
Also prepare the following equipments for other installation method and run check.
1) Clamp meter 3) Insulation resistance tester
2) Thermometer 4) Electroscope
– 22 –
FILE NO. SVM-12004
6-4. Recharging of Refrigerant
When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the
following steps.
Recover the refrigerant, and check no refrigerant
remains in the equipment.
When the compound gauge’s pointer has indicated
–0.1 Mpa (–76 cmHg), place the handle Low in the
Connect the charge hose to packed valve service port
at the outdoor unit’s gas side.
fully closed position, and turn off the vacuum pump’s
power switch.
Connect the charge hose to the vacuum pump adapter.
Open fully both packed valves at liquid and gas sides.
Place the handle of the gauge manifold Low in the
fully opened position, and turn on the vacuum pump’s
power switch.
Then, evacuating the refrigerant in the cycle.
Keep the status as it is for 1 to 2 minutes, and ensure
that the compound gauge’s pointer does not return.
Set the refrigerant cylinder to the electronic balance,
connect the connecting hose to the cylinder and the
connecting port of the electronic balance, and charge
liquid refrigerant.
(For refrigerant charging, see the figure below.)
CAUTION
1. Never charge refrigerant exceeding the specified amount.
2. If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.
3. Do not carry out additional charging.
When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the
refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the specified
amount is charged, and working pressure in the refrigeration cycle becomes abnormally high pressure, and
may cause a rupture or personal injury.
(INDOOR unit)
Refrigerant cylinder
(With siphon pipe)
Check valve
Open/Close valve
for charging
Electronic balance for refrigerant charging
Fig. 6-4-1 Configuration of refrigerant charging
(Liquid side)
(Gas side)
– 23 –
(OUTDOOR unit)
Opened
Closed
Service port
FILE NO. SVM-12004
1. Be sure to make setting so that liquid can be charged.
2. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.
It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant.
Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the
cylinder upside down if cylinder is not equipped with siphon.
[ Cylinder with siphon ] [ Cylinder without siphon ]
Gauge manifold
OUTDOOR unit
Refrigerant
cylinder
Gauge manifold
OUTDOOR unit
cylinder
Refrigerant
Electronic
balance
R410A refrigerant is HFC mixed refrigerant.
Therefore, if it is charged with gas, the
composition of the charged refrigerant changes
and the characteristics of the equipment varies.
6-5. Brazing of Pipes
6-5-1. Materials for Brazing
1. Silver brazing filler
Silver brazing filler is an alloy mainly composed
of silver and copper.
It is used to join iron, copper or copper alloy,
and is relatively expensive though it excels in
solderability.
Electronic
balance
Siphon
Fig. 6-4-2
1. Phosphor bronze brazing filler tends to react with
sulfur and produce a fragile compound water
solution, which may cause a gas leakage.
Therefore, use any other type of brazing filler at a hot
spring resort, etc., and coat the surface with a paint.
2. When performing brazing again at time of servicing,
use the same type of brazing filler.
2. Phosphor bronze brazing filler
Phosphor bronze brazing filler is generally
used to join copper or copper alloy.
3. Low temperature brazing filler
Low temperature brazing filler is generally
called solder, and is an alloy of tin and lead.
Since it is weak in adhesive strength, do not
use it for refrigerant pipes.
6-5-2. Flux
1. Reason why flux is necessary
• By removing the oxide film and any foreign matter
on the metal surface, it assists the flow of brazing
filler.
• In the brazing process, it prevents the metal
surface from being oxidized.
• By reducing the brazing filler’s surface tension,
the brazing filler adheres better to the treated metal.
– 24 –
FILE NO. SVM-12004
2. Characteristics required for flux
• Activated temperature of flux coincides with
the brazing temperature.
• Due to a wide effective temperature range, flux
is hard to carbonize.
• It is easy to remove slag after brazing.
• The corrosive action to the treated metal and
brazing filler is minimum.
• It excels in coating performance and is harmless to the human body.
As the flux works in a complicated manner as
described above, it is necessary to select an
adequate type of flux according to the type and
shape of treated metal, type of brazing filler and
brazing method, etc.
3. Types of flux
• Noncorrosive flux
Generally, it is a compound of borax and boric
acid. It is effective in case where the brazing
temperature is higher than 800°C.
• Activated flux
Most of fluxes generally used for silver brazing
are this type.
It features an increased oxide film removing
capability due to the addition of compounds
such as potassium fluoride, potassium chloride
and sodium fluoride to the borax-boric acid
compound.
4. Piping materials for brazing and used
brazing filler/flux
6-5-3. Brazing
As brazing work requires sophisticated techniques,
experiences based upon a theoretical knowledge, it
must be performed by a person qualified.
In order to prevent the oxide film from occurring in
the pipe interior during brazing, it is effective to
proceed with brazing while letting dry Nitrogen gas
(N2) flow.
Never use gas other than Nitrogen gas.
1. Brazing method to prevent oxidation
1) Attach a reducing valve and a flow-meter to
the Nitrogen gas cylinder.
2) Use a copper pipe to direct the piping material, and attach a flow-meter to the cylinder.
3) Apply a seal onto the clearance between the
piping material and inserted copper pipe for
Nitrogen in order to prevent backflow of the
Nitrogen gas.
4) When the Nitrogen gas is flowing, be sure to
keep the piping end open.
5) Adjust the flow rate of Nitrogen gas so that it
is lower than 0.05 m3/Hr or 0.02 MPa
(0.2kgf/cm2) by means of the reducing valve.
6) After performing the steps above, keep the
Nitrogen gas flowing until the pipe cools
down to a certain extent (temperature at
which pipes are touchable with hands).
7) Remove the flux completely after brazing.
Piping material
Copper - Copper
Copper - Iron
Iron - Iron
Used brazing filler
Phosphor copper
Silver
Silver
Used flux
Do not use
Paste flux
Vapor flux
1. Do not enter flux into the refrigeration cycle.
2. When chlorine contained in the flux remains
within the pipe, the lubricating oil deteriorates.
Therefore, use a flux which does not contain
chlorine.
3. When adding water to the flux, use water which
does not contain chlorine
(e.g. distilled water or ion-exchange water).
4. Remove the flux after brazing.
M
Flow meter
Stop valve
Nitrogen gas
cylinder
From Nitrogen cylinder
Pipe
Nitrogen
gas
Rubber plug
Fig. 6-5-1 Prevention of oxidation during brazing
– 25 –
7. INDOOR UNIT CONTROL
7-1. Indoor Controller block diagram
7-1-1. Connection of wired remote controller
Wired (Simple) header remote controller (wired) Central remote controller
FILE NO. SVM-12004
Indoor unit
#1 Header unit
Receiver and
Display P.C. board
(MCC-5044)
Display LED
Receiver unit
Louver
motor
Indoor
fan motor
DC280V
Indoor control P.C. board
(MCC-1510)
DC20V
DC12V
DC5V
Buzzer
Power circuit
control circuit
DC15V
Display LCD Function setup
Display LED
Remote controller
communication circuit
Central control
remote controller
(Sold separately)
U3 U4
Central control
communication circuit
Driver
Outside
output
Fan motor
CPU
Driver
Run/
Alarm/
Ready/
Thermo. ON/
COOL/HEAT/
FAN
Key switch
DC5V
Power circuit
Sold separately Sold separately
AB
Remote controller
communication circuit
synchronous
signal input circuit
CPU
H8/3039
AC
CN2
CN1
∗2
Display
LCD
DC5V
Powe r
circuit
EEPROM
TA sensor
TC sensor
TCJ sensor
HA
Wireless remote
signal setting
(A/B)
Serial send/
receive circuit
LCD driver
CPU
Secondary
battery
Follower unit
#2
Function setup
Key switch
the left
1
32
#3
Same as
the left
1
ABA
Same as
B
32
Max. 8 units are connectable. ∗1
∗1 When group and twin combination.
Main remote controller shal be connected follower indoor unit.
∗2 Weekly timer is not connectable to the sub remote controller.
– 26 –
1
1
2
Outdoor unit
32
3
Outdoor
unit
Outdoor
unit
7-1-2. Connection of Wireless Remote Controller
Central control
remote controller
Indoor unit
#1 Header unit
Receiver and
Display P.C. board
(MCC-5044)
Display LED
Receiver unit
Louver
motor
Indoor
fan motor
DC280V
Indoor control P.C. board
(MCC-1510)
DC20V
DC12V
DC5V
Buzzer
Power circuit
control circuit
DC15V
(Sold separately)
U3 U4
Central control
communication circuit
Driver
Fan motor
Driver
Outside
output
Run/
Warning/
Defrost/
Thermo. ON/
COOL/HEAT/
FAN
AB
Remote controller
communication circuit
CPU
H8/3039
AC
synchronous
signal input circuit
SL2L1
FILE NO. SVM-12004
EEPROM
TA sensor
TC sensor
TCJ sensor
HA
Wireless remote
signal setting
(A/B)
Serial send/
receive circuit
Follower unit
#2
the left
321
#3
Same as
the left
1
ABA
Same as
×
Outdoor
unit
Outdoor
unit
B
32
Max. 8 units are connectable. ∗1
∗1 When group combination, wired remote controller shall be
connected to the follower indoor unit.
SL2L1
Outdoor unit
– 27 –
7-2. Control Specifications (High Wall Type)
FILE NO. SVM-12004
No.
1
When power
supply is reset
2
Operation
mode selection
Item
Outline of specifications
1) Distinction of outdoor unit
When the power supply is reset, the outdoors are distin-
guished and the control is selected according to the
distinguished result.
2) Setting of indoor fan speed and existence of air direction
adjustment
Based on EEPROM data, select setting of the indoor fan
speed and the existence of air direction adjustment.
1) Based on the operation mode selecting command from the
remote controller, the operation mode is selected.
Remote controller
command
STOP
FAN
COOL
DRY
HEAT
AUTO
Air conditioner stops.
Fan operation
Cooling operation
Dry operation
Heating operation
• COOL/HEAT operation mode is
automatically selected by Ta, Ts
and To for operation.
• The operation is performed as
shown in the following figure
according to Ta value at the first
time only. (In the range of Ts +
Control outline
α –1 < Ta < Ts + α + 1, Cooling
thermo. OFF (Fan)/Setup air
volume operation continues.)
Remarks
Fan speed (rpm)/
Air direction adjustment
Ta: Room temp.
Ts: Setup temp.
To: Outside temp.
3
Room temp.
control
Cooling
1.0
Ta
Ts +
˚C
• α is corrected according to the outside temperature.
α
–1.0
Outside temp.
No To
To ≥ 24°C
24°C > To ≥ 18°C
To < 18°C
To error
operation
Cooling thermo. OFF (Fan)
• Setup air volume
Heating
operation
Correction value (
0K
–1K
0K
+1K
0K
αα
α)
αα
K = deg
1) Adjustment range: Remote controller setup temperature °C
COOL/DRY HEAT AUTO
Wired type ∗
Wireless type
18°C to 29°C
17°C to 30°C
∗ When use of remote sensor is set (with DN32), even when sensor value is within
the above range in HEAT or AUTO mode, the thermo. sensor turns OFF when Ta
sensor value exceeds 35°C.
– 28 –
FILE NO. SVM-12004
No.
3
Room temp.
control
(Continued)
4
Automatic
capacity control
(GA control)
Item
Outline of specifications
2) Using the CODE No. 06, the setup temperature in heating
operation can be corrected.
SET DATA
Setup temp.
correction
2
0
0°C 1°C 2°C
3 4 5
3°C
4°C 5°C
6
Shift of suction
temperature in heating
operation
Remarks
Setting at shipment
SET DATA 3
• When use of remote controller sensor is set (with DN32),
no correction is performed.
1) Based on the difference between Ta and Ts, the operation frequency is instructed to
the outdoor unit.
2) Cooling operation
Every 90 seconds, the room temperature difference between temperature detected by
Ta and Ts and the varied room temperature value are calculated to obtain the
correction value of the frequency command and then the present frequency command
is corrected.
Ta (n) – Ts (n) : Room temp. difference
n : Counts of detection
Ta (n-1) – Ts (n) : Varied room temp. value
n – 1 : Counts of detection of 90 seconds before
3) Heating operation
Every 1 minute (60 sec.), the room temperature difference between temperature
detected by Ta and Ts and the varied room temperature value are calculated to obtain
the correction value of the frequency command and then the present frequency
command is corrected.
Ts (n) – Ta (n) : Room temp. difference
n : Counts of detection
Ta (n) – Ta (n – 1) : Varied room temp. value
n – 1 : Counts of detection of 1 minute before
4) Dry operation
The frequency correction control is same as those of the cooling operation.
However the maximum frequency is limited to approximately “S6”.
Note) When LOW is set up, the maximum frequency is limited to approximately “SB”.
5
Automatic
cooling/heating
control
1) The judgment of selecting COOL/HEAT is carried out as
shown below. When +1.5°C exceeds against Tsh
10 minutes and after thermo.-OFF, heating operation
(Thermo. OFF) exchanges to cooling operation.
Description in the parentheses shows an example of
cooling ON/OFF.
Tsc: Setup temp. in
cooling operation
Tsh: Setup temp. in
heating operation
+ temp. correction
of room temp. control
˚C
Cooling
+1.5
Tsc or Tsh
–1.5
(Cooling OFF)
(Cooling ON)
Heating
When –1.5°C lowers against Tsc 10 minutes and after thermo. OFF, cooling
operation (Thermo. OFF) exchanges to heating operation.
2) For the automatic capacity control after judgment of cooling/heating, see Item 4.
3) For temperature correction of room temp. control in automatic heating, see Item 3.
– 29 –
FILE NO. SVM-12004
No.
6
Fan speed control
Item
Outline of specifications
1) Operation with (HH), (H), (L) or [AUTO] mode is carried
out by the command from the remote controller.
2) When the fan speed mode [AUTO] is selected, the fan
speed varies by the difference between Ta and Ts.
<COOL>
Ta ˚C
+3.0
+2.5
+2.0
+1.5
+1.0
+0.5
Tsc
–0.5
HH
(HH)
H+ (HH)
H (HH)
L+ (H+)
L (H)
L (H)
L (L+)
A
B
C
D
E
F
G
• Controlling operation in case when thermo of remote
controller works is same as a case when thermo of the
body works.
• If the fan speed has been changed once, it is not
changed for 3 minutes. However when the air volume is
exchanged, the fan speed changes.
• When cooling operation has started, select a downward
slope for the fan speed, that is, the high position.
• If the temperature is just on the difference boundary, the
fan speed does not change.
• Mode in the parentheses indicates one in automatic
cooling operation.
Remarks
HH > H+ > H > L+ > L >
UL
Wireless type allows HH,
H+, H, L+, L and AUTO.
[HH]
[H+]
[H]
[L+]
[L]
<HEAT>
Ta ˚C
(–0.5) –1.0
(0) Tsh
(+0.5) +1.0
(+1.0) +2.0
(+1.5) +3.0
(+2.0) +4.0
L (L+)
L+ (H)
H (H+)
H+
(HH)
HH
(HH)
E
D
C
B
A
Value in the parentheses indicates one when thermostat of
the remote controller works.
Value without parentheses indicates one when thermostat
of the body works.
• If the fan speed has been changed once, it is not
changed for 1 minute. However when the fan speed I
exchanged, the fan speed changes.
• When heating operation has started, select an upward
slope for the fan speed, that is, the high position.
• If the temperature is just on the difference boundary, the
fan speed does not change.
• Mode in the parentheses indicates one in automatic
heating operation.
• In Tc ≥ 60°C, the fan speed increases by 1 step.
Tc: Indoor heat
exchanger sensor
temperature
– 30 –
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