ac carrier.pdf
TRANSCRIPT
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1/114R410A
FILE NO. SVM-10019
Indoor Unit Outdoor Unit
RAS-09LKV-UL RAS-09LAV-UL
RAS-12LKV-UL RAS-12LAV-UL
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CONTENTS
1. SAFETY PRECAUTIONS .......................................................................... 3
2. SPECIFICATIONS ..................................................................................... 6
3. REFRIGERANT R410A ............................................................................. 8
4. CONSTRUCTION VIEWS ........................................................................ 16
5. WIRING DIAGRAM .................................................................................. 18
6. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 20
7. REFRIGERANT CYCLE DIAGRAM ........................................................ 21
8. CONTROL BLOCK DIAGRAM ................................................................ 24
9. OPERATION DESCRIPTION................................................................... 26
10. INSTALLATION PROCEDURE ................................................................ 51
11. HOW TO DIAGNOSE THE TROUBLE ...................................................... 66
12. HOW TO REPLACE THE MAIN PARTS................................................... 93
13. EXPLODED VIEWS AND PARTS LIST ................................................. 109
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1. SAFETY PRECAUTIONS
Installing, staring up, and servicing air-conditioning equipment can be hazardous due to system pressures, electrical
components, and equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should install, start-up, and service this equipment.
Untrained personnel can perform basic maintenance functions such as cleaning coils. All other operations should be
performed by trained service personnel.
When working on the equipment, observe precautions in the literature and on tags, stickers, and labels attached to the
equipment.
Follow all safety codes, Wear safety glasses and work gloves. Keep quenching cloth and fire extinguisher near by
when brazing. Use care in handling, rigging, and setting bulky equipment.
Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit.
Consult local building codes and National Electrical Code (NEC) for special requirements. Recognize safety information.
This is the safety-alert symbol ! . When you see this symbol on the unit and in instructions or manuals, be alert to the
potential for personal injury. Understand these signal words : DANGER, WARNING, and CAUTION. These words are
used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in severs personal injury or death. WARNING signifies
hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result
in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in
enhanced installation, reliability, or operation.
Before installation, please read these precautions for safety carefully.
Be sure to follow the precautions provided here to avoid safety risks. The symbols and their meanings are shown below.
WARNING: It indicates that incorrect use of this unit may cause severe injury or death.
CAUTION : FAILURE TO FOLLOW THIS CAUTION may result in equipment damage or improper operation and
personal injury.
CAUTION
New refrigerant air conditioner installation
THIS AIR CONDITIONER USES THE NEW HFC REFRIGERANT (R410A), WHICH DOES NOT DESTROY THE
OZONE LAYER.
R410A refrigerant is affected by inpurities such as water and oils because the pressure of R410A refrigerant is approx.
1.6 times of refrigerant R22.
ALSO NEW OILS ARE USED WITH R410A, THUS ALWAYS USE NEW REFRIGERANT PIPING AND DO NOT
ALLOW MOISTURE OR DUST TO ENTER THE SYSTEM.
To avoid mixing refrigerant and refrigerant machine oil, the sizes of charging port on the main unit is different than
those used on R22 machines and different tools will be required.
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe in the ground. If any section of pipe is buried, there must be a 6 in. (152 mm) vertical rise to the valve connections on the outdoor units. If more than the recommended length
is buried, refrigerant may migrate to the cooter buried section during extended periods of system shutdown. This
causes refrigerant slugging and could possibly damage the compressor at start-up.
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DANGER
FOR USE BY QUALIFIED PERSONS ONLY.
TURN OFF MAIN POWER SUPPLY BEFORE.ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE ALL POWER
SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.
CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING CABLE IS CONNECTED WRONGLY,
ELECTRIC PARTS MAY BE DAMAGED.
CHECK THE EARTH WIRE THAT IT IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLATION. DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS.
FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.
TO PREVENT OVERHEATION THE INDOOR UNIT AND CAUSING A FIRE HAZARD, PLACE THE UNIT WELL AWAY
(MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEATERS, FURNACE, STOVES, ETC.
WHEN MOVING THE AIR CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN, BE VERY CAREFUL NOT
TO GET THE SPECIFIED REFRIGERANT (R410A) WITH ANY OTHER GASEOUS BODY INTO THE REFRIGERATION
CYCLE. IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION
CYCLE BECOMES ABNORMALLY HIGH AND IT RESULTINGLY CAUSES BURST OF THE PIPE AND INJURIES ON
PERSONS.
IN THE EVENT THAT THE REFRIGERANT LEAK, DURING INSTALLATION WORK, IMMEDIATELY ALLOW FRESH AIR
INTO THE ROOM. IF THE REFRIGERANT GAS IS HEATED BY FIRE OR SOMETHING ELSE, IT CAUSE GENERATION
OF POISONOUS GAS.
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There may
be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label.
Never modify this unit by removing any of the safety guards or bypassing any of the safety interlock switches.
Installation work must be purformed by qualified personnel only.
Specified tools and pipe parts for model R410A are required, and installation work must be done in accordance with the
manual. HFC type refrigerant R410A has 1.6 times more pressure than that of conventional refrigerant (R22). Use the
specified pipe parts, and ensure correct installation, otherwise damage and/or injury may be caused. At the same time,
water leakage, electrical shock, and fire may occur.
Be sure to install the unit in a place which can sufficiently bear its weight. If the load bearing of the unit is not enough, or installation of the unit is improper, the unit may fall and result in injury.
Electrical work must be performed by trained, qualified installers and service mechanics inaccordance with the code governing
such installation work, internal wiring regulations, and the manual. A dedicated circuit and the rated voltage must be used.
Insufficient power supply or improper installation may cause electrical shock or fire.
Use a cabtyre cable to connect wires in the indoor/outdoor units. Midway connection is not allowed. Improper connection or
fixing may cause a fire.
Wiring between the indoor unit and outdoor units must be well shaped so that the cover can be firmly placed. Improper
cover installation may cause increased heat, fire, or electrical shock at the terminal area.
Be sure to use only approved accessories or the specified parts. Failure to do so may cause the unit to fall, water leakage,
fire or electrical shock.
After the installation work. ensure that there is no leakage of refrigerant gas. If the refrigerant gas leaks out of the pipe into
the room and is heated by fire or something else from a fanheater, stove or gas range, it causes generation of poisonous gas.
Make sure the equipment is properly grounded. Do not connect the ground wire to a gas pipe, water pipe, lightning
conductor, or telephone earth wire. Improper earth work may be the cause of electrical shock.
Do not install the unit where flammable gas may leak. If there is any gas leakage or accumulation around the unit, it can
cause a fire.
Do not select a location for installation where there may be excessive water or humidity, such as a bathroom. Deterioration
of insulation nay cause electrical shock or fire.
Installation work must be performed following the instructions in this installation manual. Improper installation may cause
water leakage, electrical shock or fire. Check the following items before operating the unit.
- Be sure that the pipe connection is well placed and there are no leaks.
- Check that the service valve is open. If the service valve is closed, it may cause overpressure and result in compressor
damage. At the same time, if there is a leak in the connection part, it may cause air suction and overpressure, resulting
in damage to the unit or injury.
In a pump-down operation, be sure to stop the compressor unit before removing the refrigerant pipe. If removing the
refrigerant pipe while the compressor is operating with the service valve opened, it may cause air suction and overpressure,
resulting in damage to the unit or injury. Do not modity the power cable, connect the cable midway, or use a multiple outlet extension cable. Doing so may cause
contact failure, insulation failure, or excess current, resulting in fire or electrical shock.
If you detect any damage, do not install the unit. Contact your dealer immediately.
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CAUTIONCAUTION
Exposure of unit to water or other moisture before installation could result in electric shock. Do not store it in a wet
basement or expose to rain or water.
After unpacking the unit, examine it carefully for possible damage. Report any damages to your distributor.
Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify
the noise level of the unit or where noise and discharged air might disturb neighbors.
Please read this installation manual carefully before installing the unit. It contains further important instructions
for proper installation.
This appliance must be connected to the main power supply by means of a circuit breaker depending on the
place where the unit is installed. Failure to do so may cause electrical shock.
Follow the instructions in this installation manual to arrange the drain pipe for proper drainage from the unit.
Ensure that drained water is discharged. Improper drainage can result is water leakage, causing water damage
to furniture.
Tighten the flare nut with a torque wrench using the prescribed method. Do not apply excess torque. Otherwise,
the nut may crack after a long period of usage and it may cause the leakage of refrigerant.
Wear gloves (heavy gloves such as cotton gloves) for installation work. Failure to do so may cause personal
injury when handling parts with sharp edges.
Do not touch the air intake section or the aluminum fins of the outdoor unit. It may cause injury. Do not install the outdoor unit in a place which can be a nest for small animals. Small animals could enter and
contact internal electrical parts, causing a failure or fire.
Request the user to keep the place around the unit tidy and clean.
Make sure to conduct a trial operation after the installation work, and explain how to use and maintain the unit
to the customer in accordance with the manual. Ask the customer to keep the operation manual along with the
installation manual.
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FILE NO. SVM-10019
Unit model Indoor RAS-09LKV-UL RAS-12LKV-UL
Outdoor RAS-09LAV-UL RAS-12LAV-UL
Cooling capacity (Btu/h) 9000 12000
Cooling capacity range (Btu/h) 3750 -10580 2750 - 13950Heating capacity (Btu/h) 10800 14200
Heating capacity range (Btu/h) 3070 - 16350 3070 - 19000
Power supply
Electric Indoor Operation mode Cooling Heating Cooling Heating
characteristic Running current (A) 0.22 0.20 0.25 0.23
Power consumption (W) 35 40 30 35
Power factor (%) 76 76 66 66
Outdoor Operation mode Cooling Heating Cooling Heating
Running current (A) 3.46 3.13 5.26 4.76
Power consumption (W) 655 760 920 1055
Power factor (%) 91 94 95 95
Starting current (A) 3.68 3.33 4.81/4.35 5.51/4.99
EER (Cooling/Heating) (Btu/W.h) 13.0/13.5 12.6 / 13.0
SEER (Btu/W.h) / HSPF (w/w)
Operating Indoor High (Cooling/Heating) (dB-A) 39/40 45/46
noise Medium (Cooling/Heating) (dB-A) 34/35 40/41
Low (Cooling/Heating) (dB-A) 27/29 30/32
Outdoor (Cooling/Heating) (dB-A) 47/47 50/50
Indoor unit Unit model RAS-09LKV-UL RAS-12LKV-UL
Dimension Height in. (mm) 10-25/32 (275) 10-25/32 (275)
Width in. (mm) 31-1/8 (790) 31-1/8 (790)
Depth in. (mm) 8-1/16 (205) 8-1/16 (205)
Net weight lbs (kg) 20 (9) 20 (9)
Fan motor output (W) 20 30
Air flow rate (Cooling/Heating) cfm (m3/min) 303/335 (8.6)/(9.5) 406/438 (11.5/12.4)
Outdoor unit Unit model RAS-09LAV-UL RAS-12LAV-UL
Dimension Height in. (mm) 21-11/16 (550) 21-11/16 (550)Width in. (mm) 30-11/16 (780) 30-11/16 (780)
Depth in. (mm) 11-7/16 (290) 11-7/16 (290)
Net weight lbs (kg) 75 (34) 88 (39)
Compressor Motor output (w) 750 750
Type
Model DA89X1C-23FZ2 DA111A1F-20F1
Fan motor output (W) 43 43
Air flow rate (Cooling/Heating) cfm (m3/min) 1060/1060 (30)/(30) 1395/1236 (39.5/35.0)
Piping Type Flare connection Flare connection
connection Indoor unit Liquid side in. (mm) 1/4 (6.35) 1/4 (6.35)
Gas side in. (mm) 3/8 (9.92) 3/8 (9.92)
Outdoor unit Liquid side in. (mm) 1/4 (6.35) 1/4 (6.35)
Gas side in. (mm) 3/8 (9.92) 3/8 (9.92)Maximum length ft. (m)
Maximum chargeless length ft. (m) 50 (15) 50 (15)
Maximum height difference ft. (m) 33 (10) 33 (10)
Refrigerant Name of refrigerant R410A R410A
Weight lbs (kg) 1.77 (0.8) 2.43 (1.10)
Wiring Power supply
connection Interconnection 4Wires:includes earth 4Wires:includes earth
Usable temperature range Indoor (Cooling/Heating) F (C) 70-90 / 32-82 (21-32/0-28) 70-90 / 32-82 (21-32/0-28)
Outdoor (Cooling/Heating) F (C) 14-115 / 5-75 (-10-46/-15-24) 14-115 / 5-75 (-10-46/-15-24)
* The specifications may be subject to change without notice for purpose of improvement.
20.0/10.0
66 (20)
23.0/9.5
66 (20)
Single rotary type with DC-inverter
variablespeed control
Twin rotary type with DC-inverter
variablespeed control
1Ph, 60Hz, 208V/230V 1Ph, 60Hz, 208V/230V
3Wires:includes earth (Outdoor) 3Wires:includes earth (Outdoor)
2. SPECIFICATIONS
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120
100
80
60
40
20
0
100
95
90
85
80
75
70
65
60
55
50
105
90 91 93 95 97 99 100 102 104 106108109 111 113115
CapacityRatio
(%)
CapacityRatio
(%)
Capacity Ratio: 100% =9000 Btu/h (RAS-09LKV-UL)12000 Btu/h (RAS-12LKV-UL)
RAS-09LKV-ULRAS-12LKV-UL
2-2. Operation Characteristic Curve
2-3. Capacity Variation Ratio According to Temperature
ConditionIndoor: DB70F/WB60F
Indoor Air-Flow Volume: HighPipe Length: 16 ft (5m)
Capacity Ratio: 100% =9000 Btu/h (RAS-09LKV-UL)12000 Btu/h (RAS-12LKV-UL)
(DB21.1C/WB15.6C)
FILE NO. SVM-10019
0
1
2
3
4
5
6
7
8
0 10 20 30 40 50 60 70 80 90 100 110 120
Compressor Speed (rps)
Current(A)
0
1
2
3
4
5
6
7
8
0 10 20 30 40 50 60 70 80 90 100 110 12
Compressor Speed (rps)
Current(A)
Conditions
Indoor:DB80oF/WB67
oF
(DB26.7oC/WB19.4
oC)
Outdoor:DB98oF/WB75
oF
(DB35oC/WB23.9
oC)
IndoorAirFlow:High
PipLength:5m
Voltage:230V
Conditions
Indoor:DB70oF/WB60
oF
(DB21.1oC/WB15.6
oC)
Outdoor:DB47oF/WB43
oF
(DB8.3oC/WB6.1
oC)
IndoorAirFlow:High
PipLength:5m
Voltage:230V
RAS-09LKV-UL
RAS-12LKV-UL
RAS-12LKV-UL
RAS-09LKV-UL
RAS-09LKV-ULRAS-12LKV-UL
Voltage : 230V
ConditionIndoor: DB80F/WB67F
Indoor Air-Flow Volume: HighPipe Length: 16 ft (5m)
(DB26.7C/WB19.4C)
Voltage : 230V
Outdoor Temperature (C)
(32)(33)(34)(35)(36)(37)(38)(39)(40)(41)(42)(43)(44)(45)(46)
Outdoor Temperature (C)
5 14 23 32 41 50(-15) (-10) (-5) (0) (5) (10)
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3. REFRIGERANT R410A
This air conditioner adopts the new refrigerant HFC(R410A) which does not damage the ozone layer.
The working pressure of the new refrigerant R410Ais 1.6 times higher than conventional refrigerant(R22). The refrigerating oil is also changed inaccordance with change of refrigerant, so be carefulthat water, dust, and existing refrigerant or refrigerat-ing oil are not entered in the refrigerant cycle of theair conditioner using the new refrigerant duringinstallation work or servicing time.
The next section describes the precautions for airconditioner using the new refrigerant. Conforming tocontents of the next section together with thegeneral cautions included in this manual, performthe correct and safe work.
3-1. Safety During Installation/ServicingAs R410As pressure is about 1.6 times higher thanthat of R22, improper installation/servicing maycause a serious trouble. By using tools and materi-als exclusive for R410A, it is necessary to carry outinstallation/servicing safely while taking the followingprecautions into consideration.
1. Never use refrigerant other than R410A in an airconditioner which is designed to operate withR410A.
If other refrigerant than R410A is mixed, pressure
in the refrigeration cycle becomes abnormallyhigh, and it may cause personal injury, etc. by arupture.
2. Confirm the used refrigerant name, and use toolsand materials exclusive for the refrigerant R410A.
The refrigerant name R410A is indicated on thevisible place of the outdoor unit of the air condi-tioner using R410A as refrigerant. To preventmischarging, the diameter of the service portdiffers from that of R22.
3. If a refrigeration gas leakage occurs duringinstallation/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, donot allow air or moisture to remain in the refrig-eration cycle. Otherwise, pressure in the refrig-eration cycle may become abnormally high sothat a rupture or personal injury may be caused.
5. After completion of installation work, check tomake sure that there is no refrigeration gasleakage.
If the refrigerant gas leaks into the room, cominginto contact with fire in the fan-driven heater,space heater, etc., a poisonous gas may occur.
6. When an air conditioning system charged with alarge volume of refrigerant is installed in a smallroom, it is necessary to exercise care so that,even when refrigerant leaks, its concentrationdoes not exceed the marginal level.
If the refrigerant gas leakage occurs and itsconcentration exceeds the marginal level, anoxygen starvation accident may result.
7. Be sure to carry out installation or removalaccording to the installation manual.
Improper installation may cause refrigerationtrouble, water leakage, electric shock, fire, etc.
8. Unauthorized modifications to the air conditionermay be dangerous. If a breakdown occursplease call a qualified air conditioner technicianor electrician.
Improper repairs may result in water leakage,electric shock and fire, etc.
3-2. Refrigerant Piping Installation
3-2-1. Piping Materials and Joints Used
For the refrigerant piping installation, copper pipesand joints are mainly used. Copper pipes and jointssuitable for the refrigerant must be chosen andinstalled. Furthermore, it is necessary to use cleancopper pipes and joints whose interior surfaces areless affected by contaminants.
1. Copper Pipes
It is necessary to use seamless copper pipeswhich are made of either copper or copper alloyand it is desirable that the amount of residual oilis less than 40 mg/10 m. Do not use copperpipes having a collapsed, deformed or discoloredportion (especially on the interior surface).
Otherwise, the expansion valve or capillary tubemay become blocked with contaminants.
As an air conditioner using R410A incurs pres-sure higher than when using R22, it is necessary
to choose adequate materials.
Thicknesses of copper pipes used with R410Aare as shown in Table 3-2-1. Never use copperpipes thinner than 0.0315 in. (0.8 mm) even whenit is available on the market.
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Table 3-2-1 Thicknesses of annealed copper pipes
Nominal diameter(in.)
1/4
3/8
1/2
Outer diameter (mm)
6.35
9.52
12.70
Thickness in. (mm)
R410A R22
0.0315 (0.80) 0.0315(0.80)
0.0315(0.80)
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 3-2-3 to 3-2-6 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 0.7874in. (20 mm).
Thicknesses of socket joints are as shown in Table 3-2-2.
Table 3-2-2 Minimum th icknesses of socket joints
Nominal diameter(in)
1/4
3/8
1/2
Reference outer diameter ofcopper pipe jointed (mm)
6.35
9.52
12.70
Minimum joint thicknessin. (mm)
0.0197(0.50)
0.0236(0.60)
0.0276(0.70)
3-2-2. 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
0.0315(0.80)
0.0315(0.80)0.0315(0.80)
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AD
d) Flare Processing
Make certain that a clamp bar and copperpipe have been cleaned.
By means of the clamp bar, perform the flareprocessing correctly.
Use either a flare tool for R410A or conven-tional flare tool.
Flare processing dimensions differ accordingto the type of flare tool. When using a con-ventional flare tool, be sure to secure dimen-sion A by using a gauge for size adjustment. Fig. 3-2-1 Flare processing dimensions
Table 3-2-3 Dimensions related to flare processing for R410A
Nominal
diameter
1/4
3/8
1/2
Outerdiameter
(mm)
6.35
9.52
12.70
Thickness
in. (mm)
0.0315 (0.8)
0.0315 (0.8)
0.0315 (0.8)
A in. (mm)
Flare tool for R410A
clutch type
0 to 0.0197 (0 to 0.5)
0 to 0.0197 (0 to 0.5)
0 to 0.0197 (0 to 0.5)
Conventional flare tool
Clutch type Wing nut type
0.0394 to 0.0591(1.0 to 1.5)
0.0394 to 0.0591(1.0 to 1.5)
0.0394 to 0.0591(1.0 to 1.5)
0.0591 to 0.0787(1.5 to 2.0)
0.0591 to 0.0787(1.5 to 2.0)
0.07874 to 0.0984(2.0 to 2.5)
Nominaldiameter
1/4
3/8
1/2
Outerdiameter
(mm)
6.35
9.52
12.70
Thicknessin. (mm)
0.0315 (0.8)
0.0315 (0.8)
0.0315 (0.8)
A in. (mm)
Flare tool for R22
clutch type
0 to 0.0197 (0 to 0.5)
0 to 0.0197 (0 to 0.5)
0 to 0.0197 (0 to 0.5)
Conventional flare tool
Clutch type Wing nut type
0.0197 to 0.0394(0.5 to 1.0)
0.0394 to 0.0591(1.0 to 1.5)
0.0197 to 0.0394(0.5 to 1.0)
0.0394 to 0.0591(1.0 to 1.5)
0.0197 to 0.0394
(0.5 to 1.0)
0.0591 to 0.0787
(1.5 to 2.0)
Table 3-2-4 Dimensions related to flare processingf or R22
Table 3-2-5 Flare and flare nut dimensions for R410A
Nominaldiameter
1/4
3/8
1/2
Outer diameter
(mm)
6.35
9.52
12.70
Thickness
in. (mm)
0.0315(0.8)
Dimension in. (mm)
A B C D
0.358(9.1) 0.362(9.2) 0.256(6.5) 0.512(13)
0.520(13.2) 0.531(13.5) 0.382(9.7) 0.787(20)
0.630(16.0) 0.508(12.9)
Flare nut width
in. (mm)
0.669(17)
0.866(22)
1.024(26)
0.0315(0.8)
0.0315(0.8) 0.653(16.6) 0.906(23)
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43 to45
45to4
6
B A C D
Table 3-2-6 Flare and flare nut dimensions for R22
Fig. 3-2-2 Relations between flare nut and flare seal surface
2. Flare Connecting Procedures and Precautionsa) 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 isthe 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 tighten-ing torque, comply with values designated by manufacturers. Table 3-2-7 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 3-2-7 Tightening torque of flare for R410A [Reference values]
Nominaldiameter
1/4
3/8
1/2
Outer diameter(mm)
6.35
9.52
12.70
Tightening torque
lbf.ft (Nm)
10 to 13 (14 to 18)
24 to 31 (33 to 42)
37 to 46 (50 to 62)
Tightening torque of torquewrenches available on the market
lbf.ft (Nm)
12 (16), 13 (18)
31 (42)
41 (55)
Nominaldiameter
1/4
3/8
1/2
Outer diameter
(mm)
6.35
9.52
12.70
Thickness
in. (mm)
0.0315(0.8)
Dimension in. (mm)
A B C D
0.354(9.0) 0.362(9.2) 0.256(6.5) 0.512(13)
0.512(13.0) 0.531(13.5) 0.382(9.7) 0.787(20)
0.638(16.2)0.508(12.9)
Flare nut width
in. (mm)
0.669(17)
0.866(22)
0.945(24)
0.0315(0.8)
0.0315(0.8) 0.630(16.0) 0.787(20)
FILE NO. SVM-10019
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in.
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3-3. Tools
3-3-1. Required Tools
The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R410A ischanged to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processingdimensions and opposite side dimension of flare nut (For 1/2 in. 12.7mm) copper pipe) of the refrigerantpiping 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
No.
1
2
3
4
5
6
7
8
9
10
Used tool
Flare tool
Copper pipe gauge foradjusting projectionmargin
Torque wrench[(For 1/2 (12.7mm)]
Gauge manifold
Charge hose
Vacuum pump adapter
Electronic balance forrefrigerant charging
Refrigerant cylinder
Leakage detector
Charging cylinder
Usage
Pipe flaring
Flaring byconventional flare tool
Connection of flare nut
Evacuating, refrigerantcharge, run check, etc.
Vacuum evacuating
Refrigerant charge
Refrigerant charge
Gas leakage check
Refrigerant charge
R410A
air-water heat pump installation
Existence ofnew equipmentfor R410A
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
(Note 2)
Whether conven-tional equipmentcan be used
*(Note 1)
*(Note 1)
Conventional air-water
heat pump installation
Whether new equipmentcan be used withconventional refrigerant
*(Note 1)
(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
(Note 2) Charging cylinder for R410A is being currently developed.
General tools (Conventional tools can be used.)
In addition to the above exclusive tools, the following equipments which serve also for R22 are necessaryas the general tools.
1. Vacuum pumpUse vacuum pump by attachingvacuum pump adapter.
2. Torque wrench [For 1/4, 3/8 in.
(6.35, 9.52mm)]
4. Reamer
5. Pipe bender
6. Level vial
7. Screwdriver (+, )
8. Spanner or Monkey wrench
9. Hole core drill [2-9/16 in. (65mm)]
10. Hexagon wrench[Opposite side 3/16 in. (4mm)]
11. Tape measure
12. Metal saw
Also prepare the following equipments for other installation method and run check.
1. Clamp meter
2. Thermometer
3. Insulation resistance tester
4. Electroscope
3. Pipe cutter
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Connect the charge hose to packed valve serviceport at the outdoor units gas side.
Recover the refrigerant, and check no refrigerantremains in the equipment.
(For refrigerant charging, see the figure below.)
Connect the charge hose to the vacuum pumpadapter.
Open fully both packed valves at liquid and gassides.
Place the handle of the gauge manifold Low in thefully opened position, and turn on the vacuum pumpspower switch. Then, evacuating the refrigerant in thecycle.
When the compound gauges pointer has indicated
14.7 Psi (0.1 Mpa) or
29.9 inHg (76 cmHg),
place the handle Low in the fully closed position, andturn off the vacuum pump's power switch.
Keep the status as it is for 1 to 2 minutes, and ensurethat the compound gauges pointer does not return.
Set the refrigerant cylinder to the electronic balance,connect the connecting hose to the cylinder and theconnecting port of the electronic balance, and charge
liquid refrigerant.
(Indoor Unit)(Outdoor unit)
Opened
Opened
Refrigerant cylinder
(with siphon)
Check valve
Open/close
valve forcharging
Electronic balance forrefrigerantcharging
Opened
Closed
Serviceport
3-4. Recharging of Refrigerant
When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to thefollowing steps.
1. Never charge refrigerant exceeding the specified amount.
2. If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bitin COOL mode.
3. Do not carry out additional charging.
When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in therefrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding thespecified amount is charged, and working pressure in the refrigeration cycle becomes abnormally highpressure, and may cause a rupture or personal injury.
Fi 3 4 1 C fi i f f i h i
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Gauge manifold
[ Cylinder with siphon ] [ Cylinder without siphon ]
OUTDOOR unitGauge manifold
OUTDOOR unit
Refrigerantcylinder
Electronicbalance
Refrigerantcylinder
Electronicbalance
Siphon
1. Be sure to make setting so that liquidcan 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 thecylinder upside down if cylinder is not equipped with siphon.
R410A refrigerant is HFC mixed refrigerant.Therefore, if it is charged with gas, the composi-tion of the charged refrigerant changes and thecharacteristics of the equipment varies.
3-5. Brazing of Pipes
3-5-1. 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, copperor copper alloy, and is relatively expensive thoughit excels in solderability.
2. Phosphor bronze brazing filler
Phosphor bronze brazing filler is generally usedto join copper or copper alloy.
3. Low temperature brazing filler
Low temperature brazing filler is generally calledsolder, and is an alloy of tin and lead. Since it isweak in adhesive strength, do not use it forrefrigerant pipes.
1. Phosphor bronze brazing filler tends to reactwith sulfur and produce a fragile compoundwater solution, which may cause a gasleakage. Therefore, use any other type ofbrazing 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.
3-5-2. Flux
1. Reason why flux is necessary
By removing the oxide film and any foreignmatter on the metal surface, it assists the flowof brazing filler.
In the brazing process, it prevents the metal
surface from being oxidized.
By reducing the brazing fillers surface tension,the brazing filler adheres better to the treated
Fig. 3-4-2
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Nitrogen gascylinder
Pipe
Flow meterM
Stop valve
From Nitrogen cylinder
Nitrogengas
Rubber plug
2. Characteristics required for flux
Activated temperature of flux coincides with thebrazing temperature.
Due to a wide effective temperature range, fluxis hard to carbonize.
It is easy to remove slag after brazing.
The corrosive action to the treated metal andbrazing filler is minimum.
It excels in coating performance and is harm-less to the human body.
As the flux works in a complicated manner asdescribed above, it is necessary to select anadequate type of flux according to the type andshape of treated metal, type of brazing filler andbrazing method, etc.
3. Types of flux
Noncorrosive flux
Generally, it is a compound of borax and boricacid.It is effective in case where the brazing tem-perature is higher than 1472F (800C).
Activated flux
Most of fluxes generally used for silver brazingare this type.It features an increased oxide film removingcapability due to the addition of compoundssuch as potassium fluoride, potassium chlorideand sodium fluoride to the borax-boric acidcompound.
4. Piping materials for brazing and usedbrazing filler/flux
1. Do not enter flux into the refrigeration cycle.
2. When chlorine contained in the flux remainswithin the pipe, the lubricating oil deteriorates.Therefore, use a flux which does not containchlorine.
3. When adding water to the flux, use waterwhich does not contain chlorine (e.g. distilledwater or ion-exchange water).
4. Remove the flux after brazing.
3-5-3. Brazing
As brazing work requires sophisticated techniques,experiences based upon a theoretical knowledge, itmust be performed by a person qualified.
In order to prevent the oxide film from occurring inthe pipe interior during brazing, it is effective toproceed 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 tothe Nitrogen gas cylinder.
2) Use a copper pipe to direct the piping mate-rial, and attach a flow-meter to the cylinder.
3) Apply a seal onto the clearance between the
piping material and inserted copper pipe forNitrogen in order to prevent backflow of theNitrogen gas.
4) When the Nitrogen gas is flowing, be sure tokeep the piping end open.
5) Adjust the flow rate of Nitrogen gas so that itis lower than 0.03 cfm (0.05 m3/Hr) or 2.9 Psi(0.02 MPa) by means of the reducing valve.
6) After performing the steps above, keep theNitrogen gas flowing until the pipe cools downto a certain extent (temperature at whichpipes are touchable with hands).
7) Remove the flux completely after brazing.
Fig. 3-5-1 Prevention of oxidation during 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
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4. CONSTRUCTION VIEWS
4-1. Indoor Unit
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4-2. Outdoor Unit
10-7/8
(275)
2-23/32 (69)
3-17/32 (90)
3-17/32 (90)
23-5/8 (600)
17-5/32 ( 436) WIRE GUARD
12-19/32
(320)
4-1/4 (108) 4-15/16 (125)
3-3/8
(86)
1 ( 25) Water Drain Outlet
4-9/16
(116)
A
B
13-1/2 (342)
COVERPACKED VALVE
11-7/16 (290)
21-11/16
(550)
View Z
5-9/16
(141)
2-3/32(
53)
3-15/32
(88)
Liquid side(Flare Nut : 1/4 ( 6.35))
Gas side(Model 09,12k Flare Nut : 3/8 ( 9.52))
Service Port
1-27/64 (36)1-31/32 (50)
(R5.5)R7/32
( 6) Hole1/4 Hole
(R15)R19/32
12-19/32
(320)
23-5/8 (600)
12-3/64
(306)
1-27/64 (36)
1-31/32 (50)
R19/32 (R15)( 6)-Hole
1/4-Hole
23-5/8 (600)
7/16x9/16 Oval-Hole ( 11x14) Oval Hole
12-1
9/32
(320)
12-3/64
(306)
Detail-B (Front Leg)
23-5/8 (600)
12-19/32
(320)
3-15/16 Inch or more(100 mm. or more)
23-5/8 Inch or more(600 mm. or more)
Air Inlet
Air Outlet
2-R7/32x43/64L (R5.5x17L) U-Shape(For 5/16~ 13/32 ( 8~ 10) Anchor Bolt)
2- 7/16x9/16 ( 11x14) Oval-Hole (For 5/16~ 13/32 ( 8~ 10) Anchor Bolt)
3-15/16 Or more(100 mm or more)
23-5/8 Or more(600 mm or more)
View Z
Detail-A (Rear Leg)
Unit : Inch (mm)
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5. WIRING DIAGRAM
5-1. RAS-09LKV-UL / RAS-09LAV-UL
FILE NO. SVM-10019
Outdoor Terminal Block
POWER SUPPLY
Indoor Terminal Block
L1L2 S
L1L2 S
HeatExchanger
BLK
WHI
RED
GRN&YEL
(From Outdoor Unit)
208/230-1-60
3 1
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
1010
1111
1
2
3
4
5
6
7
8
9
10
11
(WHI)CN10
(YEL)CN21W
irelessUnitAssembly
MCC-5044
WHI
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
1 1
2 2
1 1
2 2
(BLU)CN62
(WHI)CN61Thermo Sensor
(TA)
Heat Exchanger Sensor(TC)
1 12 2
3 3
4 4
5 5
1 12 2
3 3
4 4
5 5
1 1
2 2
3 3
1 1
2 2
3 3
4 4
5 5
6 6
5 5
4 4
3 3
2 2
1 1
(WHI)CN32
(WHI)CN33
(WHI)CN31
WHI
YEL
YEL
YEL
YEL
1
2
3
4
(WHI)CN22
Color indication
BRW:BROWNYEL:YELLOWBLK:BLACKRED:REDBLU:BLUEWHI:WHITEGRN & YEL:GREEN & YELLOW
Fan Motor
AC Motor
PowerSupplyCircuit
Main PC BoardWP-020
DC5V
DC12V
T3.15A
FuseF01
CN01 CN51
Varistor LineFilter
+
Louver Motor
~
1 1
2 2
3 3
3 3
2 2
1 1
3 3
2 2
1 1
3 3
2
1 1
2 2
1 1
6 6
5 5
4 4
3 3
2
1 1
2 2
1
2
1
L1
1
~ ~
L2 S1 3
1
1
2
1
2
3
L1 L2
COMPRESSORREDWHI
BLK
YEL
YEL
BRW
YEL
ORN
REACTOR
P06
P25
P24
R221P.C.BOARD(MCC-5009)
R220
R219
L03
R321
CN300
CN700
L01
CN603
TS(SUCTION PIPETEMP. SENSOR)
TO(OUTDOOR
TEMP. SENSOR)
TD(DISCHARGE PIPETEMP. SENSOR)
TE(CONDENSER PIPE
TEMP. SENSOR)2
1
PRESSURE SW.
CN602VARISTOR
SURGEABSORBER
P02
WHI
POWERSUPPLY208/230-1-60
P01
BLK
P07
BLK
P03
ORN
CN601
CN600
CN500
BLKWHI
RED
FAN MOTOR
PULSE MOTOR VALVE
VARISTOR
R320
R319
C13
C12 C14
Q200~205IGBT
Q300~305MOS-FET
DB01
POWERRELAY
DB02
Q404
PUR
RELAY
CT
F03FUSE
T3.15AAC250V
P22
P20
P23
P21
P35
P34
P19
P33 P31 P30
CN701P32
P18
P11
P08
P05P04
CM FM
PMV
BLK:BLACKBLU:BLUERED:REDGRY:GRAYPNK:PINK
WHI:WHITEBRW:BROWNORN:ORANGEYEL:YELLOWPUR:PURPLE
COLOR IDENTIFICATION
F01FUSE25AAC250V
COILFOR4WAYVALVE
1 2
1 2
REACTOR
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5-2. RAS-12LKV-UL /RAS-12LAV-UL
FILE NO. SVM-10019
1 1
2 2
1 1
2 2
1 1
2 2
3 3
4 4
5 5
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
1010
1111
1212
1313
1414
1515
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
1010
11 11
1212
1313
1414
1515
1 1
2 2
3 3
4
1
2
3
4
4
5 5
1 1
3 3
4 4
5 5
6 6
Outdoor Terminal Block
POWER SUPPLY
Indoor Terminal Block
L1 L2 S
L1 L2 S
3 1
HeatExchanger
GRN&YELBLK
BLK
(BLU)
WHI
RED
(From Outdoor Unit)
208/230-1-60
SHEET METAL
CN02
CN01 CN51
CN62
(WHI)CN61
(WHI)CN32
(WHI)
WHI
YEL
YEL
YEL
YEL
CN31
(WHI)CN22
(WHI)CN10
(WHI)CN21
T3
.15A250VAC
Fuse
F01
Thermo Sensor(TA)
Heat Exchanger Sensor(TC)
Wire
less
Un
itAssem
bly
MCC-5
044
BLU
BLU
BLU
BLU
BLU
BLU
BLUBLU
WHI
Varistor
LineFilter
DC5V
DC12V
Power
Supp
lyCircu
it
Main PC BoardMCC-5045
Louver Motor
Fan Motor
DC Motor
Color indication
BRW:BROWNYEL:YELLOWBLK:BLACKRED:REDBLU:BLUEWHI:WHITEGRN & YEL:GREEN & YELLOW
1 1
2 2
3 3
3 3
2 2
1 1
3 3
2 2
1 1
3 3
2
1 1
2 2
1 1
6 6
5 54 4
3 3
2
1 1
2 2
1
2
1
L1
1
~ ~
L2 S1 3
1
1
2
1
2
3
L1 L2
COMPRESSORREDWHI
BLK
YEL
YEL
BRW
YEL
ORN
REACTOR
P06
P25
P24
R221P.C.BOARD(MCC-5009)
R220
R219
L03
R321
CN300
CN700
L01
CN603
TS(SUCTION PIPETEMP. SENSOR)
TO(OUTDOOR
TEMP. SENSOR)
TD(DISCHARGE PIPETEMP. SENSOR)
TE(CONDENSER PIPE
TEMP. SENSOR)2
1
PRESSURE SW.
CN602VARISTOR
SURGEABSORBER
P02
WHI
POWERSUPPLY208/230-1-60
P01
BLK
P07
BLK
P03
ORN
CN601
CN600
CN500
BLK
WHI
RED
FAN MOTOR
PULSE MOTOR VALVE
VARISTOR
R320
R319
C13
C12 C14
Q200~205IGBT
Q300~305MOS-FET
DB01
POWERRELAY
DB02
Q404
PUR
RELAY
CT
F03FUSE
T3.15AAC250V
P22
P20
P23
P21
P35
P34
P19
P33 P31 P30
CN701P32
P18
P11
P08
P05P04
CM FM
PMV
BLK:BLACKBLU:BLUERED:REDGRY:GRAYPNK:PINK
WHI:WHITEBRW:BROWNORN:ORANGEYEL:YELLOWPUR:PURPLE
COLOR IDENTIFICATION
F01FUSE25AAC250V
COILFOR4WAYVALVE
1 2
1 2
REACTOR
~
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6. SPECIFICATIONS OF ELECTRICAL PARTS
6-1. Indoor Unit
L = 10mH, 16A
2 Outdoor fan motor
3 Suction temp. sensor (TS sensor) 10k(25C)
4 Discharge temp. sensor (TD sensor) 62k(20C)
5 Outside air temp. sensor (TO sensor) 10k(25C)
6 Heat exchanger temp. sensor (TE sensor) 10k(25C)
7 Terminal block (5P) 30A, AC600V
RAS-09LAV-UL
RAS-12LAV-UL
9 COIL FOR P.M.V. DC12V
10 Coil for 4-way valve
CAM-MD 12TCTH-4
STF
Compressor
(Inverter attached)
(Inverter attached)
(Inverter attached)
8
(Inverter attached)
DA89X1C-23FZ2
DA111A1F-20F2
CH-57
ICF-340UA40-2 DC340V, 40W
11 Pressure SW.
ACB-4UB82W 4.7 MPa
RAS-09LKV-UL
(for indoor)RAS-12LKV-UL
2 Room temp. sensor (TA-sensor) 10k at 25C
3 Heat exchanger temp. sensor (TC-sensor) 10k at 25C
4 Louver motor Output (Rated) 1W, 16 poles, DC12V
( )
( )
MP24Z3T
AFS-220-20-4D AC240V, 20W1
ICF-340U30-2 AC220V, 20W
No.
Fan motor
Parts name SpecificationsType
No. Parts name Model name Rating
Reactor1
3-phases 4-poles 750W
3-phases 4-poles 680W
FILE NO. SVM-10019
6-2. Outdoor Unit
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7. REFRIGERANT CYCLE DIAGRAM
7-1. Refrigerant Cycle Diagram
RAS-09LKV-UL / RAS-09LAV-UL
NOTE :
The maximum pipe length of this air conditioner is 66ft (20 m). When the pipe length exceeds 50ft (15m), the additional
Deoxidized copper pipe Outer dia. : 3/8 in (9.52mm) Thickness : 1/32 in (0.8mm)
NOTE : Gas leak check position
Refrigerant flow (Cooling)
Refrigerant flow (Heating)
INDOOR UNITT1
TO
Temp. measurement
TC
TA
Indoor heatexchanger
Cross flow fan
Deoxidized copper pipe Outer dia. : 1/4 in (6.35mm) Thickness : 1/32 (0.8mm)
Sectional shapeof heat insulator
Allowableheight
difference:33ft(10mm)
Allowablepipelength
P Pressure measurement
Gauge attaching portVacuum pump connecting port
Strainer
Pulse Modulatingvalve at liquid side
TD
4-way valve
CompressorDA89X1C-23FZ2
TS
T2
Outdoor heatexchanger
Temp. measurement
Propeller fan Refrigerant amount : 1.77lbs (0.80kg)
OUTDOOR UNIT
Muffler
Muffler
TE
Min. : 6.6ft (2m)Chargeless : 50ft (15m
Strainer
Max. : 66ft (20m)
Charge : 0.22oz/ft(51 to 66ft)
charging of refrigerant, 0.22 oz/ft (20g/m) for the part of pipe exceeded 50ft (15m) is required. [(Max. 0.22 lbs (100g)]
[20g/m (16 to 20m)]
FILE NO. SVM-10019
High Pressure switch
Fusible plug
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RAS-12LKV-UL / RAS-12LAV-UL
NOTE :
The maximum pipe length of this air conditioner is 66ft (15 m). When the pipe length exceeds 50ft (15m), the additional
Max. : 66ft (20m)
Deoxidized copper pipe Outer dia. : 3/8 in. (9.52mm)Thickness : 1/32 in. (0.8mm)
NOTE : Gas leak check position
Refrigerant flow (Cooling)
Refrigerant flow (Heating)
INDOOR UNITT1
TO
Temp. measurement
Indoor heatexchanger
Cross flow fan
Deoxidized copper pipe Outer dia. : 1/4 in. (6.35mm) Thickness : 1/32 in. (0.8mm)
Sectional shapeof heat insulator
Allowableheight
difference:33ft(10m)
Allowablepipelength
P Pressure measurement
Gauge attaching portVacuum pump connecting port
Strainer
Pulse Modulatingvalve at liquid side
1.2 x 80
1.2 x 80
TD
4-way valve
CompressorDA111A1F-20F1
TS
T2
Outdoor heatexchanger Split capillary
Temp. measurement
Propeller fan Refrigerant amount : 2.43 lbs (1.10kg)
OUTDOOR UNIT
Muffler
Muffler
TE
TC
TA
charging of refrigerant, 0.22 oz/ft (20g/m) for the part of pipe exceeded 15m is required. [Max. 0.22 lbs (100g)]
Min. : 6.6ft (2m)Chargeless : 50 ft (15m)
Charge : 0.22oz/ft(51 to 66 ft)[20g/m (16 to 20m)]
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7-2. O eration Data
Tempeature Model name Standard Heat exchanger Indoor Outdoor Compressor
condition(C) RAS- pressure pipe temp. fan mode fan mode revolution
Indoor Outdoor P Psia (MPa) T1 F (C) T2 F (C) (rps)
80/67 98/75 137 to 160 54 to 57 99 to 102
(26.7/19.4) (35/23.9) (0.9 to 1.1) (12 to 14) (37 to 39)
116 to 145 52 to 55 104 to 107
(0.8 to 1.0) (11 to 13) (42 to 44)
Tempeature Model name Standard Heat exchanger Indoor Outdoor Compressor
condition(C) RAS- pressure pipe temp. fan mode fan mode revolutionIndoor Outdoor P Psia (MPa) T1 F (C) T2 F (C) (rps)
70/60 47/43 363 to 392 102 to 105 32 to 37
(21.1/15.6) (8.3/6.1) (2.5 to 2.7) (39 to 41) (0 to 3)
377 to 406 106 to 106 32 to 36
(2.6 to 2.8) (41 to 43) (0 to 2)
NOTES :
1. Measure surface temperature of heat exchanger pipe around center of heat exchaner path U bent.
(Thermistor themometer)
2. Connecting piping condition : 16 ft (5m)
62
High High 64
09LKV-UL
12LKV-UL
High High
12LKV-UL High High 77
High High 6009LKV-UL
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8. CONTROL BLOCK DIAGRAM
8-1. Indoor Unit
M.C.U. Indoor Unit Control Unit
From Outdoor Unit208/230-1-60 Serial Signal Communication
(Operation Command and Information)
Serial Signal Transmitter/Receiver
Converter(D.C circuit)
Noise Filter
IndoorFan Motor
LouverMotor
Louver MotorDrive Control
Indoor FanMotor Control
Initializing Circuit
Clock FrequencyOscillator Circuit
Power SupplyCircuit
Infrared Rays, 36.7kHzRemote Controller
Thermo. Setting
Fan Speed Selection
ON TIMER Setting
OFF TIMER Setting
Louver AUTO Swing
Louver Direction Setting
Operation Mode SelectionAUTO, COOL, DRY, HEAT, FAN
REMOTE CONTROLLER
ECO
Hi-POWER
Heat Exchanger Sensor (Tc)
Room Temperature Sensor (Ta)
Infrared Rays Signal Receiverand Indication
Functions
Cold draft preventing Function
3-minute Delay at Restart for Compressor
Fan Motor Starting Control
Processing(Temperature Processing)
Timer
Serial Signal Communication
Clean Function
Operation (START/STOP)
COMFORT SLEEP
QUIET
SLEEP (1,3,5,9 OFF TIMER)
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8-2. Outdoor Unit (Inverter Assembly)
208/230-1-60
MICRO-COMPUTER
BLOCK
DIAGRAM
Drivercircuit
ofP.M.V.
Heatexc
hanger
temp.sensor
Suction
temp.
sensor
Outdoorair
temp.s
ensor
Discharge
temp.s
ensor
Indoorunit
send/receive
circuit
Relay
circuit
Noise
Filter
Converter
(ACDC)
Clock
frequency
4MHz
HighPower
factorCorrection
circuit
Inputcurrent
sensor
PWMsynthesisfunction
Inputcurrentreleasecontrol
IGBTover-currentdetectcontrol
Outdoorfancontrol
Highpowerfactorcorrectioncontrol
Inverteroutputfrequencycontrol
A/Dconverterfunction
P.M.V.control
Dischargetemp.control
4-wayvalvecontrol
Signalcommunicationtoindoorun
it
P.M.V.:PulseMotorValve
M.C.U.:MicroControlUnit
M.C.U
ForINDOORUNIT
4-way
valve
P.M.V.
Inverter
(DCAC)
Gatedrive
circuit
Gatedrive
circuit
Inverter
(DC
AC)
Outdoor
Fanmotor
Compressor
MCC5009(P.C.B)
OUTDOORUNIT
Current
detect
Curre
nt
detect
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9. OPERATION DESCRIPTION
9-1. Outline of Air Conditioner Control
This air conditioner is a capacity-variable type airconditioner, which uses AC or DC motor for the indoorfor motor and the outdoor fan motor. And the capacity-proportional control compressor which can change the
motor speed in the range from 11 to 96 rps ismounted. The DC motor drive circuit is mounted to theindoor unit. The compressor and the inverter to controlfan motor are mounted to the outdoor unit.
The entire air conditioner is mainly controlled by theindoor unit controller.
The indoor unit controller drives the indoor fan motorbased upon command sent from the remote controller,and transfers the operation command to the outdoorunit controller.
The outdoor unit controller receives operation com-mand from the indoor unit side, and controls theoutdoor fan and the pulse Modulating valve. (P.M.V)
Besides, detecting revolution position of the compres-sor motor, the outdoor unit controller controls speed ofthe compressor motor by controlling output voltage ofthe inverter and switching timing of the supply power(current transfer timing) so that motors drive accordingto the operation command.And then, the outdoor unit controller transfers reverselythe operating status information of the outdoor unit tocontrol the indoor unit controller.
As the compressor adopts four-pole brushlessDC motor, the frequency of the supply powerfrom inverter to compressor is two-times cyclesof the actual number of revolution.
1. Role of indoor unit controller
The indoor unit controller judges the operationcommands from the remote controller and assumesthe following functions.
Judgment of suction air temperature of the indoorheat exchanger by using the indoor temp. sensor.(TA sensor)
Judgment of the indoor heat exchanger tempera-ture by using heat exchanger sensor (TC sensor)(Prevent-freezing control, etc.)
Louver motor control
Indoor fan motor operation control LED (Light Emitting Diode) display control
Transferring of operation command signal (Serialsignal) to the outdoor unit
Reception of information of operation status(Serial signal including outside temp. data) to theoutdoor unit and judgment/display of error
Air purifier operation control
2. Role of outdoor unit controller
Receiving the operation command signal (Serialsignal) from the indoor unit controller, the outdoorunit performs its role.
Compressor operation control
Operation control of outdoor fan motor
P.M.V. controlOperations followed to judgmentof serial signal from indoor side.
Detection of inverter input current and currentrelease operation
Over-current detection and prevention operationto IGBT module (Compressor stop function)
Compressor and outdoor fan stop function when
serial signal is off (when the serial signal does notreach the board assembly of outdoor control bytrouble of the signal system)
Transferring of operation information (Serialsignal) from outdoor unit controller to indoor unitcontroller
Detection of outdoor temperature and operationrevolution control
Defrost control in heating operation (Temp.measurement by outdoor heat exchanger andcontrol for 4-way valve and outdoor fan)
3. Contents of operation command signal
(Serial signal) from indoor unit controller tooutdoor unit controller
The following three types of signals are sent fromthe indoor unit controller.
Operation mode set on the remote controller
Compressor revolution command signal definedby indoor temperature and set temperature(Correction along with variation of room tempera-ture and correction of indoor heat exchangertemperature are added.)
Temperature of indoor heat exchanger
For these signals ([Operation mode] and [Com-pressor revolution] indoor heat exchanger tem-perature), the outdoor unit controller monitors theinput current to the inverter, and performs thefollowed operation within the range that currentdoes not exceed the allowable value.
4. Contents of operation command signal(Serial signal) from outdoor unit controllerto indoor unit controller
The following signals are sent from the outdoor unitcontroller.
The current operation mode
The current compressor revolution
Outdoor temperature Existence of protective circuit operation
For transferring of these signals, the indoor unitcontroller monitors the contents of signals, andjudges existence of trouble occurrence.
Contents of judgment are described below.
Whether distinction of the current operationstatus meets to the operation command signal
Whether protective circuit operates
When no signal is received from the outdoorunit controller, it is assumed as a trouble.
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9-2. Operation Description
1. Basic operation ........................................................................................................... 28
1. Operation control ................................................................................................... 28
2. Cooling/Heating operation ..................................................................................... 29
3. AUTO operation ..................................................................................................... 29
4. DRY operation ........................................................................................................ 29
2. Indoor fan motor control ............................................................................................. 30
3. Outdoor fan motor control ........................................................................................... 32
4. Capacity control .......................................................................................................... 33
5. Current release control ............................................................................................... 33
6. Release protective control by temperature of indoor heat exchanger........................ 34
7. Defrost control (Only in heating operation) ................................................................ 35
8. Louver control ............................................................................................................. 36
1) Louver position ....................................................................................................... 36
2) Air direction adjustment ......................................................................................... 36
3) Swing ..................................................................................................................... 36
9. ECO operation ............................................................................................................ 37
10. Temporary operation ................................................................................................... 38
11. Discharge temperature control ................................................................................... 38
12. Pulse Modulating valve (P.M.V.) control ..................................................................... 39
13. Self-Cleaning function................................................................................................ 40
14. Remote-A or B selection ......................................................................................... ... 42
9-3. Auto Restart Function..
9-3-1. How to Cancel the A uto Restart Function ................................................................. 45
9-3-2. How to set the Auto Restart Function ....................................................................... 46
9-3-3. Power Failure During Timer Operation ......................................................... .......... 469-4. Remote Controller and Its Fuctions
9-4-1. Parts Name of Remote Controller ............................................................................. 47
9-4-2. Operation of remote control ................................................. ..................................... 47
15. QUIET mode ............................................................................................................. 4316. COMFORT SLEEP mode ............ ............................................................................. 43
17. One-Touch Comfort ........................ .......................................................................... 43
18. Hi-POWER Mode .................................................... .................................................. 44
9-4-3. Name and Functions of Indications on Remote Controller ....................................... 50
FILE NO. SVM-10019
19. FILTER Indicator ........................................................................................................ 44
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Item
1. Basicoperation
Operation flow and applicable data, etc.
1. Operation control
Description
Receiving the users operation condition setup, the operation statuses of indoor/outdoor units arecontrolled.
1) The operation conditions are selected by the remote controller as shown in the below.
2) A signal is sent by ON button of the remote controller.
3) The signal is received by a sensor of the indoor unit and processed by the indoor controllers asshown in the below.
4) The indoor controller controls the indoor fan motor and louver motor.
5) The indoor controller sends the operation command to the outdoor controller, and sends/receivesthe control status with a serial signal.
6) The outdoor controller controls the operation as shown in the left, and also controls the compres-sor, outdoor fan motor, 4-way valve and pulse Modulating valve.
Remote controller
Indoor unit
Control contents of remote controller ON/OFF (Air conditioner/Air purifier) Operation select (COOL/HEAT/AUTO/DRY) Temperature setup Air direction Swing Air volume select (AUTO/LOW/LOW+/MED/MED+/HIGH) ECO ON timer setup OFF timer setup Hi-POWER
Indoor unit control Command signal generating function of
indoor unit operation Calculation function (temperature calculation) Activation compensation function of indoor fan Cold draft preventive function Timer function Indoor heat exchanger release control
Indoor fan motor Louver motor
Outdoor unit
Outdoor unit control Frequency control of inverter output Waveform composite function Calculation function
(Temperature calculation) AD conversion function Quick heating function Delay function of compressor reactivation Current release function GTr over-current preventive function Defrost operation function
Compressor Outdoor fan motor 4-way valve Pulse Modulating valve
(P.M.V.)
Signal receiving
Indoor unit control
Operation command
Serial signal send/receive
Selection ofoperation conditions
ON/OFF
Serial signal send/receive
Outdoor unit control
Inverter
~
COMFORT SLEEPQUIETPRESETONE-TOUCH
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Operation ON Setup of remote controller
Indoorfan motor control / Louver control / Operation Hz
Control (Requierment)Indoor unit control
Sending of operation command signal
Outdoor unit control [ ]
Compressor revolution control / Outdoor fan motor control /
4-way valve control In cooling operation: ON In heating operation: OFFPulse Modulating valve control
Item
1. Basicoperation
Operation flow and applicable data, etc.
2. Cooling/Heating operation
Description
The operations are performed in the following parts by controls according to cooling/heating conditions.
1) Receiving the operation ON signal of the remote controller, the cooling or heating operation signalstarts being transferred form the indoor controller to the outdoor unit.
2) At the indoor unit side, the indoor fan is operated according to the contents of 2. Indoor fan
motor control and the louver according to the contents of 9. Louver control, respectively.
3) The outdoor unit controls the outdoor fan motor, compressor, pulse Modulating valve and4-way valve according to the operation signal sent from the indoor unit.
3. AUTO operation
Selection of operation modeAs shown in the following figure, the operation starts byselecting automatically the status of room temperature(Ta) when starting AUTO operation.
*1. When reselecting the operation mode, the fanspeed is controlled by the previous operation mode.
4. DRY operation
DRY operation is performed according to the differencebetween room temperature and the setup temperature asshown below.
In DRY operation, fan speed is controlled in order toprevent lowering of the room temperature and to avoid airflow from blowing directly to persons.
1) Detects the room temperature (Ta) whenthe DRY operation started.
2) Starts operation under conditions in theleft figure according to the temperaturedifference between the room tempera-ture and the setup temperature (Tsc).Setup temperature (Tsc)= Set temperature on remote controller (Ts) + 0~1.0C (0 to 2F)
3) When the room temperature is lower2F (1C) or less than the setuptemperature, turn off the compressor.
1) Detects the room temperature (Ta) whenthe operation started.
2) Selects an operation mode from Ta inthe left figure.
3) Fan operation continues until anoperation mode is selected.
4) When AUTO operation has started
within 2 hours after heating operationstopped and if the room temperature is68F (20C) or more, the fan operation isperformed with Super Ultra LOW modefor 3 minutes.Then, select an operation mode.
5) In AUTO mode, either cooling or heatingoperation will be selected. When roomtemperature reach set temperaturecommpressor will stop. In case that thecompressor stops for 15 minutes, the
Ts + 1
Ts 1
Ta
Cooling operation
Monitoring (Fan)
Heating operation
Tsc
+1.0 (0.5)
+2.0 (1.0)
F [C]
Ta
Fan speed
L (W5)
(W5+W3) / 2
SUL (W3)
Operation Hz control (Include limit control)
FILE NO. SVM-10019
C
AUTO mode will reselect cooling orheating operation.
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Item
2. Indoor fanmotor control
Operation flow and applicable data, etc.
(This operation controls the fan speed at indoor unit side.)
The indoor fan (cross flow fan) is operated by the phase-control induction motor. The fan rotates in 5 stages inMANUAL mode, and in 5 stages in AUTO mode, respec-
tively. (Table 1)
Description
* Symbols
UH : Ultra HighH : HighM+ : Medium+
M : MediumL+ : Low+L : LowL- : LowUL : Ultra LowSUL : Super Ultra Low
* The values of fan speed and air flowvolume indicate on the table are measuredwhen the louver is inclined downward.Fan speed and air flow volume broadlyvary with position of louver.
1) When setting the fan speed to L,L+, M, M+ or H on the remote
controller, the operation isperformed with the constantspeed shown in Fig. 1.
2) When setting the fan speed toAUTO on the remote controller,revolution of the fan motor iscontrolled to the fan speed levelshown in Fig. 2 and Table 1according to the setup tempera-ture and room temperature.
(Fig. 1)
(Fig. 2)
(Table 1) Indoor fan air flow rate
+4.5 (+2.5)
TaF [C]
+3.5 (+2.0)
+2.7 (+1.5)
+2.0 (+1.0)
+1.0 (+0.5)
Tsc
a
b
c
d
e
M+(WB)
*3
*4
*5
L(W6)
Air volume AUTO
L
L+
M
M+
H
W6
(L + M) / 2
W9
(M + H) / 2
WC
Indication Fan speed
Fan speed setup
COOL ON
AUTO
MANUAL
*3 : Fan speed = [(M+)L]x 3/4 + L
*4 : Fan speed = [(M+)L]x 2/4 + L
*5 : Fan speed = [(M+)L]x 1/4 + L
(Linear approximationfrom M+ and L)
FILE NO. SVM-10019
Fanspeed Airflowrate Fanspeed Airflowrate(rpm) cfm(m3/h) (rpm) cfm(m3/h)
WF UH 1210 336(571) 1510 433(735)
WE H 1210 336(571) 1510 433(735)
WD UH M+ UH 1170 321(546) 1480 422(717)
WC H H 1120 303(515) 1430 404(686)
WB M+ M+ 1040 274(465) 1280 350(594)
WA M 1000 248(421) 1220 328(557)
W9 M L+ 960 235(400) 1150 302(514)
W8 L 870 200(340) 1000 248(421)
W7 L+ L- L+ 850 194(330) 980 241(409)
W6 L L 760 159(270) 920 219(372)
W5 L- UL L- 760 159(270) 900 212(360)
W4 UL UL 700 141(240) 840 190(323)
W3 SUL SUL 650 118(200) 770 165(280)
W2 SUL 500 65(110) 620 110(187)
W1 500 65(110) 520 74(126)
RAS 12LKV ULFan speedlevel DRYEATOOL
RAS 09LKV UL
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Item
2. Indoor fanmotor control
Operation flow and applicable data, etc.
Description
1) When setting the fan speed to L,L+, M, M+ or H on the remotecontroller, the operation is per-formed with the constant speedshown in Fig. 3 and Table 1.
2) When setting the fan speed toAUTO on the remote controller,revolution of the fan motor iscontrolled to the fan speed levelshown in Fig. 5 according to the settemperature and room temperature.
3) Min air flow rate is controlled bytemperature of the indoor heatexchanger (Tc) as shown in Fig. 4
for prevent high temperature of heatexchanger.
4) Cold draft prevention, the fan speedis controlled by temperature of the
[In starting and in stability]
(Fig. 3)
(Fig. 4)
(Fig. 5)
Cold draft preventive control
(Fig. 6)
L
L+
M
M+
H
W8
(L + M) / 2
WA
(M + H) / 2
WE
Indication Fan speed
Fan speed setup
HEAT ON
AUTO
YES
NO
MANUAL
TC 107.6F (42 C) Min air flow rate control
Tc F (C) Limited to Min WD tap
* Fan speed =(TC W8) + W8
No limit
*
Fan speedAUTO
Basicfancontrol
* No limitation while fan speed MANUAL mode is in stability.* A: When Tsc 75F (24C), A is 75F (24C), and
Tsc: Set value
b
d
e
f
g
L+ (W9)
M+ (WD)
*1
*2
*3
H (WE)
H (WE)
Linear-approximateH and SUL with Tc.
SUL (W2)
Stop
115(46) 115(46)
Tc
93 (34)
*A+4 *A+4 *A+4
*A-4 *A-4 *A-4
Fan speed MANUAL in starting
Fan speed AUTO in stabilityFan speed AUTO in starting
*1: Fan speed = [(M+) (L+)]x 1 4 + L+*2: Fan speed = [(M+) (L+)]x 2 4 + L+*3: Fan speed = [(M+) (L+)]x 3 4 + L+(Calculated with linear approximation from M+ and L+)
TaF[C]
TSC
-1.0(-0.5)
-2.0(-1.0)
-2.7(-1.5)
-3.5(-2.0)
-4.5(-2.5)
-9.0(-5.0)
-10.0(-5.5)
F(C)
113 (45) 113 (45) 91 (33)
91 (33) 91 (33) 70(21)
90(32) 90(32) 68 (20)
when Tsc < 75F (24C), A is Tsc
FAN AUTO
FAN Manual
In starting
Until 12 minutes passed after operation start
When 12 to 25 minutes passed after operationstart and room temp. is 5.4F (3C) or lower than set temp.
Room temp. < Set temp. -7F ( 4C)
In stability
When 12 to 25 minutes passed after operation startand room temp. is higher than [set temp. -5.4F (3C)]
When 25 minutes or more passed after operation start
Room temp. Set temp. -6.3F (3.5C)
5) In order to prevent Cold draft when
compressor stop during heatingoperation. Then louver will move to
upper position and fan speed will
reduce or off.
FILE NO. SVM-10019
126 (52)124 (51)
108 (42)106 (41)
indoor heat exchanger (Tc) as shown
in Fig. 6 for keep warm temperatureof air flow.
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Item
3. Outdoor fanmotor control
Operation flow and applicable data, etc.
The blowing air volume at the outdoor unit side is controlled.
Receiving the operation command from the controller ofindoor unit, the controller of outdoor unit controls fan speed.
* For the fan motor, a DC motor with non-stage variablespeed system is used. However, it is limited to 8 stages forreasons of controlling.
Description
1) The operation command sentfrom the remote controller isprocessed by the indoor unitcontroller and transferred to thecontroller of the outdoor unit.
2) When strong wind blows atoutdoor side, the operation of airconditioner continues with thefan motor stopped.
3) Whether the fan is locked or notis detected, and the operation ofair conditioner stops and analarm is displayed if the fan islocked.
4) According to each operationmode, by the conditions ofoutdoor temperature (To) andcompressor revolution, the speedof the outdoor fan shown in the
table is selected.
Air conditioner ON(Remote controller)
YES
YES
NO
NO
Indoor unit controller
Fan motor ON
3) Fan lock
4) Motor operates as shown in the table below.
1) Outdoor unitoperation command(Outdoor fan control)
Air conditionerOFF
Alarmdisplay
2) Fan speed 400.
(by strong wind)when the motor OFF.
Fan motor OFF continues(Use wind for heat
exchanging)
Outdoor fan speed (rpm)
Tap
f 1
f 2
f 3
f 4
f 5
f 6
f 7
f 8
200 200
300 300
370 370
440 440
440 440
500 500
550 550
600 600
Tap
f 9
f A
f B
f C
f D
f E
f F
600 650
600 700
650 700
700 800
700 800
700 800
700 900
Compressor speed (rps)
To
DuringECO mode
When To is abnormal
~ 13.8 ~ 31.7 32.3 ~ MAX
MIN MAX MIN MAX MIN MAX
f 2 f 3 f A f C f D f F
f 2 f 3 f 7 f A f 9 f C
f 1 f 3 f 2 f 5 f 4 f 7
f 1 f 1 f 1 f 2 f 2 f 4
f 2 f 3 f B f C f C f D
In cooling operation
Compressor speed (rps)
To
During
ECO mode
When To is abnormal
~16.8 ~47.9 48.5 ~ MAX
f 3 f 8 f 9
f 3 f 9 f A
f 8 f A f D
f B f C f D
f 3 f 3 f 6
f 3 f 3 f 8
f 5 f 9 f 9
f 7 f A f B
f A f B f D
In Heating operation
f 2 f 3 f C f D f E f F
f 0 f 0 f 0 f 1 f 1 f 2
f D f F f D f F f F
f 2 f 3 f 2 f 3 f B f C
f D
RAS-09LAV-UL RAS-12LAV-UL
f 0 0 0
RAS-09LAV-UL RAS-12LAV-UL
To 100F (38C)
To 82F (28C)
To 59F (15C)
To 42F (5.5C)
To 32F (0C)
To < 32F (0C)
To 100F (38C)
To 100F (38C)
To 50F (10C)
To 42F (15C)
To 22F (-5C)
To < 22F (-5C)
To 50F (10C)
To 42F (15C)
To 22F (-5C)
To < 22F (-5C)
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Item
4. Capacitycontrol
Operation flow and applicable data, etc.
The cooling or heating capacity depending on the load isadjusted.
According to difference between the setup value of tempera-ture and the room temperature, the capacity is adjusted bythe compressor revolution.
Description
1) The difference between settemperature on remote controller(Ts) and room temperature (Ta)is calculated.
2) According to the temperaturedifference, the correction value ofHz signal which determines thecompressor speed is set up.
3) The rotating position and speedof the motor are detected by theelectromotive force occurred onthe motor winding with operationof the compressor.
4) According to the differenceresulted from comparison of thecorrection value of Hz signal withthe present operation Hz, theinverter output and the commuta-tion timing are varied.
5) Change the compressor motorspeed by outputting power to thecompressor.
* The contents of controloperation are same in coolingoperation and heatingoperation
This function prevents troubles on the electronic parts of thecompressor driving inverter.
This function also controls drive circuit of the compressorspeed so that electric power of the compressor drive circuitdoes not exceed the specified value.
5. Current releasecontrol
Outdoor temp. To
Setup of current release point
Outdoor unit inverter maincircuit control current
High
Low
Reduce compressor speedOperating current
Setup value
1) The input current of the outdoorunit is detected in the invertersection of the outdoor unit.
2) According to the detectedoutdoor temperature, thespecified value of the current isselected.
3) Whether the current valueexceeds the specified value ornot is judged.
4) If the current value exceeds thespecified value, this functionreduces the compressor speedand controls speed up to the
closest one commanded from theindoor unit within the rangewhich does not exceed thespecified value.
Outdoor temp.Cooling current release value Heating current release value
RAS-09LAV-UL RAS-12LAV-UL RAS-09LAV-UL RAS-12LAV-UL
113F (45C)
104F (40C)
61F (16C)
52F (11C)
111F (44C)
102F (39C)
60F (15.5C)
51F (10.5C)
3.97A
4.35A
6.30A
4.27A
4.88A
8.47A
6.30A 7.72A
6.30A 8.10A
6.30A 8.47A
FILE NO. SVM-10019
Set temp. (Ts) Room temp. (Ta)
Correction value of Hz signal
Detection of electromotive forceof compressor motor winding
Inverter output changeCommutation timing change
Change of compressor speed
Remote contr oller Indoor unit
Ts Ta
Correction value of Hz signal-Operating Hz
Detection of motor speed (Operation Hz)and rotor position
Capacity control continues
Current decrease
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Item
6. Release protectivecontrol by tempera-ture of indoor heatexchanger
Operation flow and applicable data, etc.
(Prevent-freezing control for indoor heat exchanger)
In cooling/dry operation, the sensor of indoor heatexchanger detects evaporation temperature andcontrols the compressor speed so that temperature of
the heat exchanger does not exceed the specifiedvalue.
Description
1) When temperature of the indoorheat exchanger drops below 41F(5C), the compressor speed isreduced. (P zone)
2) When temperature of the indoorheat exchanger rises in therange from 43F (6C) to under45F (7C), the compressorspeed is kept. (Q zone)
3) When temperature of the indoorheat exchanger rises to 45F (7C)or higher, the capacity controloperation returns to the usualcontrol in cooling operation.(R zone)
1) When temperature of the indoorheat exchanger rises in therange from 126F (52C) to 131F(55C), compressor speed is kept.(Q zone)
When temperature of the indoorheat exchanger drops in therange from 118F (48C) to under131F (55C) the compressorspeed is kept. (Q zone)
2) When temperature of the indoorheat exchanger rises to 131F(55C) or higher, the compressorspeed is reduced. (P zone)
3) When temperature of the indoorheat exchanger does not rise to126F (52C), or when it dropsbelow to 118F (48C), the capacitycontrol operation returns to theusual control in heating operation.(R zone)
(Prevent-overpressure control for refrigerating cycle)
In heating operation, the sensor of indoor heat ex-changer detects condensation temperature and controlsthe compressor speed so that temperature of the heatexchanger does not exceed the specified value.
(7 C)
(6 C)
(5 C)
R
Q
P
(55 C)
(52 C)
(48 C)
P
Q
R
Usual cooling capacity control
Reduction of compressor speedIndoorheatexchangertemperature
When the value isin Q zone, thecompressor speedis kept.
Reduction of compressor speed
Usual heating capacity controlIndoorheatexchangertemperature
When the value isin Q zone, thecompressor speedis kept.
45 F
43 F
41 F
131 F
126 F
118 F
FILE NO. SVM-10019
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Item Operation flow and applicable data, etc. Description
7. Defrost control(Only in heatingoperation)
(This function removes frost adhered to the outdoorheat exchanger.)
The temperature sensor of the outdoor heat ex-changer (Te sensor) judges the frosting status of theoutdoor heat exchanger and the defrost operation isperformed with 4-way valve reverse defrost system.
The necessity of defrost operation isdetected by the outdoor heat exchangertemperature. The conditions to detect thenecessity of defrost operation differ in A,B, or C zone each. (Table 1)
Defrost operation in A to C zones
1) Stop operation of the compressor for20 seconds.
2) Invert (ON) 4-way valve 10 secondsafter stop of the compressor.
3) The outdoor fan stops at the same timewhen the compressor stops.
4) When temperature of the indoor heatexchanger becomes 100F (38C) orlower, stop the indoor fan.
Returning conditions from defrostoperation to heating operation
1) Temperature of outdoor heat exchangerrises to 46F (8C) or higher.
2) Temperature of outdoor heat exchanger iskept at 41F (5C) or higher for 80 seconds.
3) Defrost operation continues for15 minutes.
1) Stop operation of the compressor forapprox. 50 seconds.
2) Invert (OFF) 4-way valve approx. 40seconds after stop of the compressor.
3) The outdoor fan starts rotating at thesame time when the compressor starts.
Table 1
* The minimum value of Te sensor 10 to 15 minutesafter start of operation is stored in memory as Te0.
(5 C)
0 10 15 2740 34
(7 C)
(20 C)
Operation time(Minute)
Start of heating operation
*Outdoorh
eatexchangertemperature
C zone
A zone
B zone
A zone
B zone
C zone
When Te0 - TE 4.5F (2.5C) continued for 2 minutes inA zone, defrost operation starts.
When the operation continued for 2 minutes in B zone,defrost operation starts.
When Te0 - TE 5.4F (3C) continued for 2 minutes inC zone, defrost operation starts.
23 F
19 F
4 F
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Horizontalblowing
Inclinedblowing
Blowingdownward
Air direction
Inclinedblowing
Horizontalblowing
Initial setting of "Cooling storage position"Louver : Directs downward (35.3)
Heating operation/AUTO (HEAT)
Initial setting of Heating storage positionLouver : Directs downward (80.5 )
Item
8. Louver control
1) Louverposition
Operation flow and applicable data, etc.
This function controls the air direction of the indoor unit.
Description
Swing operation is perforin range 35 with the Fixed position asthe center.
If the swing rangeexceeded either upper or lower limit position,swing operation is perfomed in range 35 from the limit.
3) Swing
2) Louver position in heating operation
2) Air direction adjustment
The position is automatically controlled according to the operation
The set louver position is stored in memory by the microcomputer,
The angle of the louver is indicated as the louver closes fully is 0.
1) Louver position in cooling operation
mode (COOL/HEAT).
and the louver returns to the stored position when the next operation
is performed. (Cooling/Heating memory position)
Swing
When pressing[SWING] button during
operation, the louverstarts swinging.
The louver position canbe arbitrarily set up by
pressing [FIX] button.
FILE