Toshiba RAS-13G2KVP-E, RAS-13G2AVP-E, RAS-10G2KVP-E, RAS-10G2AVP-E, RAS-16G2KVP-E Service Manual
...
SERVICE MANUAL
Indoor Unit Outdoor Unit
<High Wall, Heat Pump Type> <Heat Pump Type>
FILE NO. SVM-14017
SPLIT TYPE
RAS-10G2KVP-E / RAS-10G2AVP-E
RAS-13G2KVP-E / RAS-13G2AVP-E
RAS-16G2KVP-E / RAS-16G2AVP-E
R410A
May, 2014
FILE NO. SVM-14017
CONTENTS
1. SAFETY PRECAUTIONS .......................................................................... 2
2. SPECIFICATIONS ..................................................................................... 5
3. REFRIGERANT R410A ............................................................................. 7
4. CONSTRUCTION VIEWS ........................................................................ 15
5. WIRING DIAGRAM .................................................................................. 17
6. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 18
7. REFRIGERANT CYCLE DIAGRAM ........................................................ 19
8. CONTROL BLOCK DIAGRAM ................................................................ 22
9. OPERATION DESCRIPTION................................................................... 24
10.
11.
12.
13.
INSTALLATION PROCEDURE ................................................................ 62
HOW TO DIAGNOSE THE TROUBLE...................................................... 79
HOW TO REPLACE THE MAIN PARTS.................................................. 104
EXPLODED VIEWS AND PARTS LIST .................................................. 122
– 1 –
FILE NO. SVM-14017
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
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.
! . When you see this symbol on
the unit and in instructions or manuals, be alert to the
• 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.
− 2 −
FILE NO. SVM-14017
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 in accordance 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.
− 3 −
FILE NO. SVM-14017
CAUTION
CAUTION
• 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.
− 4 −
FILE NO. SVM-14017
2. SPECIFICATIONS
2-1. Specifications
Unit model Indoor
Outdoor
Cooling capacity (kW)
Cooling capacity range (kW)
Heating capacity (kW)
Heating capacity range (kW)
Power supply
Electric Indoor Operation mode Cooling Heating Cooling Heating Cooling Heating
characteristic Running current (A) 0.24-0.22 0.28-0.26 0.24-0.22 0.28-0.26 0.24-0.22 0.28-0.26
Power consumption (W) 25 30 25 30 25 30
Power factor (%) 47 48 47 48 47 48
Outdoor Operation mode Cooling Heating Cooling Heating Cooling Heating
Running current (A) 2.58-2.36 3.10-2.84 4.03-3.70 3.84-3.52 6.24
Power consumption (W) 485 580 820 800 1300 1370
Power factor (%) 78 78 87 88 91 93
Starting current (A)
COP
Operating Indoor High (Cooling/Heating) (dB-A)
noise Medium (Cooling/Heating) (dB-A)
Low (Cooling/Heating) (dB-A)
Outdoor (Cooling/Heating) (dB-A)
Indoor unit Unit model
Dimension Height (mm)
Width (mm)
Depth (mm)
Net weight (kg)
Fan motor output (W)
Air flow rate (Cooling/Heating) (m3/min)
Outdoor unit Unit model
Dimension Height (mm)
Width (mm)
Depth (mm)
Net weight (kg)
Compressor Motor output (W)
Type
Model
Fan motor output (W)
Air flow rate (Cooling/Heating) (m3/min)
Piping Type
connection Indoor unit Liquid side (mm)
Gas side (mm)
Outdoor unit Liquid side (mm)
Gas side (mm)
Maximum length (m)
Maximum chargeless length (m)
Maximum height difference (m)
Refrigerant Name of refrigerant
Weight (kg)
Wiring Power supply
connection Interconnection
Usable temperature range Indoor (Cooling/Heating) (°C)
Outdoor (Cooling/Heating) (°C)
Accessory Indoor unit Installation plate
Wireless remote controller
Batteries
Remote controller holder
Toshiba IAQ-Filter
Mounting screw
Remote controller holder
Pan head wood screw
Plasma ionizer purifier
Installation manual
Owner's manual
Outdoor unit Drain nipple
Water-proof rubber cap
RAS-10G2KVP-E
RAS-10G2AVP-E
2.50
0.55-3.50
3.20
0.45-5.80
2.82-2.58 3.3
5.15/5.52
42/43
33/33
24/24
46/47
RAS-10G2KVP-E
293
831
270
14
30
10.8-11.3
RAS-10G2AVP-E
630
800
300
42
750
DA111A1F-24F
43
31.2/31.2
Flare connection
∅6.35
9.52
∅
∅6.35
∅9.52
25
15
10
R410A
1.05
21-32/ 0-28
-10-46/-15-24
1
1
2
1
1
6(∅4x25L) 6(∅4x25L) 6(∅4x25L)
2(∅3.1x16L)
1
1
1
1
2
1 Ph, 220-240V, 50Hz & 1 Ph, 220V, 60Hz
8-3.10
Twin rotary type with DC-inverter variablespeed control
RAS-13G2KVP-E
RAS-13G2AVP-E
3.50
0.63-4.10
4.00
0.65-6.30
4.27-3.92 4.12
4.27/5.00
RAS-13G2KVP-E
11.2-12.1
RAS-13G2AVP-E
DA150A1T-21F
36.0/36.0
Flare connection
∅6.35
∅9.52
∅6.35
∅9.52
R410A
3Wires:includes earth (Outdoor)
4Wires:includes earth
21-32/ 0-28
-10-46/-15-24
2(∅3.1x16L)
-3.78
43/44
34/34
25/25
48/49
293
831
270
14
30
630
800
300
42
750
43
25
15
10
1.05
1
1
2
1
1
1
1
1
1
2
6.48-5.94 6.69-6.13
RAS-16G2KVP-E
RAS-16G2AVP-E
4.50
0.63-5.00
5.50
0.65-6.80
-5.72 6.41-5.87
3.46/4.01
44/45
35/35
26/26
49/50
RAS-16G2KVP-E
293
831
270
14
30
11.6-12.4
RAS-16G2AVP-E
630
800
300
42
750
DA150A1T-21F
43
42.4/42.4
Flare connection
∅6.35
∅12.7
∅6.35
∅12.7
25
15
10
R410A
1.05
21-32/ 0-28
-10-46/-15-24
1
1
2
1
1
2(∅3.1x16L)
1
1
1
1
2
– 5 –
2-2. Operation Characteristic Curve
<Cooling> <Heating>
2-3. Capacity Variation ratio According to Temperature.
<Cooling> <Heating>
0
1
2
3
4
5
6
7
8
9
0 10 20 30 40 50 60 70 80 90 100
Current (A)
Compressor Speed (RPS)
0
2
4
6
8
10
12
0 15 30 45 60 75 90 105 120
Current (A)
Compressor Speed (RPS)
RAS-16G2KVP-E
RAS-13G2KVP-E
Conditions
Indoor : DB 27oC/WB 19oC
Outdoor : DB 35oC/WB 24oC
Indoor Air Flow : High
Pipe Length : 5m
Voltage : 230V
Conditions
Indoor : DB 20oC/WB 15oC
Outdoor : DB 7oC/WB 6oC
Indoor Air Flow : High
Pipe Length : 5m
Voltage : 230V
RAS-10G2KVP-E
0.0
20.0
40.0
60.0
80.0
100.0
120.0
-25 -20 -15 -10 -5 0 5 10
Heating Capacity ratio (%)
Outside Temperature ( ºC)
RAS-10G2KVP-E
RAS-13G2KVP-E
RAS-16G2KVP-E
RAS-10G2KVP-E
RAS-13G2KVP-E
50.0
55.0
60.0
65.0
70.0
75.0
80.0
85.0
90.0
95.0
100.0
105.0
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46
Cooling Capacity ratio (%)
Outside Temperature ( oC)
Conditions
Indoor : DB 27oC/WB 19oC
Outdoor : DB 35oC/WB 24oC
Indoor Air Flow : High
Pipe Length : 5m
Voltage : 230V
Capacity ratio : 100 %=
2.50kW(RAS-10G2KVP-E)
3.50kW(RAS-13G2KVP-E)
4.50kW(RAS-16G2KVP-E)
RAS-16G2KVP-E
RAS-13G2KVP-E
Conditions
Indoor : DB 20oC/WB 15oC
Outdoor : DB 7oC/WB 6oC
Indoor Air Flow : High
Pipe Length : 5m
Voltage : 230V
RAS-10G2KVP-E
RAS-16G2KVP-E
FILE NO. SVM-14017
– 6 –
3. REFRIGERANT R410A
FILE NO. SVM-14017
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.
3-1. 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 fan-driven 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’s 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 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 3-2-1. Never use copper
pipes thinner than 0.8 mm even when it is
available on the market.
– 7 –
Table 3-2-1 Thicknesses of annealed copper pipes
Thickness (mm)
FILE NO. SVM-14017
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 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 20 mm.
Thicknesses of socket joints are as shown in Table 3-2-2.
Table 3-2-2 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
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
– 8 –
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 3-2-3 Dimensions related to flare processing for R410A
Nominal
diameter
Outer
diameter
(mm)
Thickness
(mm)
Fig. 3-2-1 Flare processing dimensions
Flare tool for R410A
clutch type
FILE NO. SVM-14017
ØD
A
A (mm)
Conventional flare tool
Clutch type Wing nut type
1/4
3/8
1/2
5/8
Nominal
diameter
1/4
3/8
1/2
5/8
6.35
9.52
12.70
15.88
Table 3-2-4 Dimensions related to flare processing for R22
Outer
diameter
(mm)
6.35
9.52
12.70
15.88
0.8
0.8
0.8
1.0
Thickness
(mm)
0.8
0.8
0.8
1.0
0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5
Flare tool for R22
clutch type
0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5
1.0 to 1.5 1.5 to 2.0
1.0 to 1.5 1.5 to 2.0
1.0 to 1.5 2.0 to 2.5
1.0 to 1.5 2.0 to 2.5
A (mm)
Conventional flare tool
Clutch type Wing nut type
0.5 to 1.0 1.0 to 1.5
0.5 to 1.0 1.0 to 1.5
0.5 to 1.0 1.5 to 2.0
0.5 to 1.0 1.5 to 2.0
Nominal
diameter
1/4
3/8
1/2
5/8
Table 3-2-5 Flare and flare nut dimensions for R410A
Outer diameter
(mm)
6.35
9.52
12.70
15.88
Thickness
(mm)
0.8
0.8
0.8
1.0
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
– 9 –
Flare nut width
(mm)
17
22
26
29
Table 3-2-6 Flare and flare nut dimensions for R22
FILE NO. SVM-14017
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. 3-2-2 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 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]
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)
– 10 –
16 (160), 18 (180)
42 (420)
55 (550)
65 (650)
FILE NO. SVM-14017
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 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
2
3
4
5
6
7
8
9
10
(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
Flare tool
Copper pipe gauge for
adjusting projection
margin
Torque wrench
(For Ø12.7)
Gauge manifold
Charge hose
Vacuum pump adapter
Electronic balance for
refrigerant charging
Refrigerant cylinder
Leakage detector
Charging cylinder
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
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
Usage
Existence of
new equipment
for R410A
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
(Note 2)
R410A
Whether conventional equipment
can be used
*(Note 1)
*(Note 1)
×
×
×
×
×
×
×
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
Use vacuum pump by attaching
vacuum pump adapter.
2. Torque wrench (For Ø6.35, Ø9.52)
3. Pipe cutter
4. Reamer
5. Pipe bender
6. Level vial
7. Screwdriver (+, –)
8. Spanner or Monkey wrench
9. Hole core drill (Ø65)
10. Hexagon wrench
(Opposite side 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
– 11 –
FILE NO. SVM-14017
3-4. 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.
Connect the charge hose to packed valve service
port at the outdoor unit’s gas side.
Connect the charge hose to the vacuum pump
adapter.
Open fully both packed valves at liquid and gas
sides.
When the compound gauge’s pointer has indicated
–0.1 Mpa (–76 cmHg), place the handle Low in the
fully closed position, and turn off the vacuum pump’s
power switch.
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.
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.
(For refrigerant charging, see the figure below.)
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)
Opened
(Outdoor unit)
Refrigerant cylinder
(with siphon)
Check valve
Opened
Open/close
valve for charging
Electronic balance for refrigerant charging
Fig. 3-4-1 Configuration of refrigerant charging
Opened
Closed
Service port
– 12 –
FILE NO. SVM-14017
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.
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, copper
or copper alloy, and is relatively expensive though
it excels in solderability.
2. Phosphor bronze brazing filler
Phosphor bronze brazing filler is generally used
to join copper or copper alloy.
Electronic
balance
Siphon
Fig. 3-4-2
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.
3-5-2. Flux
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.
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.
– 13 –
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
FILE NO. SVM-14017
3-5-3. 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. 3-5-1 Prevention of oxidation during brazing
– 14 –
4-1. Indoor Unit
FILE NO. SVM-14017
4. CONSTRUCTION VIEWS
831
Front panel
64
62
6
Knock out system
Heat exchanger
Air filter
Plasma ion charger
(Air purifier)
293
Picoion generator
62
64 64
131.5 99
150 150 150 150
104.3
270
62
6 64
Knock out system
62
70.5 38
188
Drain hose
(0.6m)
Hanger
Connecting pipe(0.62m)
(For 10,13k : Flare 9.52mm)
(For 16k : Flare 12.7mm)
35
45
190mm
or more
293
Minimum distance
to wall
46
69
174
Center line
Hanger
156 156
312
Connecting pipe(0.66m)
Flare
Minimum distance
to wall 52mm
or more
590
225 225
HangerHanger
Installation plate outline
Hanger
6.35mm
137 104
225mm
or more
102 174
Outline of indoor unit
65
198
46
Minimum distance
to wall
57
20
Wiress remote controller
149
63
26
Remote controller holder
– 15 –
4-2. Outdoor Unit
600
50
36
R
15
6
hole
R
316
330
A detail drawing (Back leg)
5.5
106
330
FAN-GUARD
440
A
29
25 Drain outlet
108
(For
125
8-
29
2-
11x14 Hole
10 anchor bolt)
B
COVER-PV
FILE NO. SVM-14017
330
316
R
6
hole
11
x14 hole
B detail drawing (Front leg)
36
50
15
View Z
299
630
318
View Z
69100 600
99
137
92
54
330
351
Electrical part
Liquid side
(Flare
Gas side
(10,13 : Flare
(16 : Flare
Service port
6.35)
9.52)
12.70)
100 or more
320
100 or more
Air outlel
Installation dimension
600
– 16 −
Air intlel
600 or more
2 - R5-5 x 17L Ushape
(For ∅8 - ∅10 anchor bolt)
600 or more
2 - ∅11 x 14 Long holes (For ∅8- ∅10 anchor bolt)
5. WIRING DIAGRAM
FILE NO. SVM-14017
– 17 –
6-1. Indoor Unit
FILE NO. SVM-14017
6. SPECIFICATIONS OF ELECTRICAL PARTS
No.
1
Fan motor (for indoor)
2 Room temp. sensor (TA-sensor)
3 Heat exchanger temp. sensor (TC-sensor)
Heat exchanger temp. sensor (Tcj-sensor)
4
5
Louver motor
Parts n ame
MF-340-30-3 DC250~370, 30W
( - )
( - )
( - )
24BYJ48-HT
10kΩ at 25°C
10kΩ at 25°C
10kΩ at 25°C
Output (Rated) 1W, 16 poles, DC12V
6-2. Outdoor Unit
No.
1 Reactor L = 10mH, 16A
2 Outdoor fan motor DC140V, 43W
3 Suction temp. sensor (TS sensor)
4 Discharge temp. sensor (TD sensor)
Parts name Model na me Rating
CH-57-Z-T ; R
ICF-140-43-4R
(Inverter attached)
(Inverter attached)
10k
62k
Ω(25°C)
Ω(20°C)
Specif icationsType
5 Outside air temp. sensor (TO sensor)
6 Heat exchanger temp. sensor (TE sensor)
7 Terminal block (6P) 20A, AC250V
10k
Compressor
8
9 Coil for PMV DC12V
10 Coil for 4-way valve
3-phases 4-poles 750W
13k, 16k
3-phases 4-poles 1100W
(Inverter attached)
(Inverter attached)
JX0-6B
DA111A1F-24F
DA150A1T-21F
CAM-MD12TCTH-5
STF-H01AZ1724A1
10k
Ω (25°C)
10k
Ω(25°C)
DC12V
– 18 −
7. REFRIGERANT CYCLE DIAGRAM
7-1. Refrigerant Cycle Diagram
RAS-10G2KVP-E / RAS-10G2AVP-E
INDOOR UNIT
Indoor heat
exchanger
T1
Temp. measurement
Tcj
TC
FILE NO. SVM-14017
P
Pressure measurement
Gauge attaching port
Vacuum pump connecting port
Deoxidized copper pipe
Outer dia. : 9.52mm
Thickness : 0.8mm
4-way valve
TS
Muffler
Muffler
Compressor
DA111A1F-24F
Outdoor heat
exchanger
Cross flow fan
Deoxidized copper pipe
Outer dia. : 6.35mm
Thickness : 0.8mm
Sectional shape
of heat insulator
TD
TO
Split capillary
Ø1.2 x 80
TA
Allowable height
difference : 10m
Pulse Modulating
valve at liquid side
Max. : 25m
Min. : 2m
Chargeless : 15m
Charge : 20g/m
(16 to 25m)
Allowable pipe length
Temp. measurement
T2
Propeller fan
OUTDOOR UNIT
Ø1.2 x 80
TE
NOTE :
Refrigerant amount : 1.05kg
Gas leak check position
Refrigerant flow (Cooling)
Refrigerant flow (Heating)
NOTE :
• The maximum pipe length of this air conditioner is 25 m. When the pipe length exceeds 15m, the additional
charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 200g)
– 19 –
RAS-13G2KVP-E / RAS-13G2AVP-E
RAS-16G2KVP-E / RAS-16G2AVP-E
INDOOR UNIT
Indoor heat
exchanger
T1
Temp. measurement
Tcj
TC
FILE NO. SVM-14017
P
Pressure measurement
Gauge attaching port
Vacuum pump connecting port
Deoxidized copper pipe
Outer dia. : 9.52mm(13)
Thickness : 0.8mm
: 12.7mm(16)
4-way valve
TS
Muffler
Muffler
Compressor
DA150A1T
Outdoor heat
exchanger
Cross flow fan
Deoxidized copper pipe
Outer dia. : 6.35mm
Thickness : 0.8mm
Sectional shape
of heat insulator
TD
-21F
TO
Split capillary
Ø1.2 x 80
TA
Allowable height
difference : 10m
Pulse Modulating
valve at liquid side
Max. : 25m
Min. : 2m
Chargeless : 15m
Charge : 20g/m
(16 to 25m)
Allowable pipe length
Temp. measurement
T2
Propeller fan
OUTDOOR UNIT
Ø1.2 x 80
TE
NOTE :
Refrigerant amount : 1.05kg
Gas leak check position
Refrigerant flow (Cooling)
Refrigerant flow (Heating)
NOTE :
• The maximum pipe length of this air conditioner is 25 m. When the pipe length exceeds 15m, the additional
charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 200g)
– 20 −
FILE NO. SVM-14017
7-2. Operation Data
<Cooling>
Tempeature Model name Standard Heat exchanger Indoor Outdoor Compressor
condition(°C) RAS- pressure pipe temp. fan mode fan mode revolution
Indoor Outdoor P (MPa) T1 (°C) T2 (°C) (rps)
27/19 35/- 10G2KVP-E 1.0 to 1.2 13 to 15 40 to 42 High High 37
13G2KVP-E 0.9 to 1.1 12 to 14 41 to 43 High High 42
16G2KVP-E 0.8 to 1.0 11 to 13 42 to 44 High High 62
<Heating>
Tempeature Model name Standard Heat exchanger Indoor Outdoor Compressor
condition(°C) RAS- pressure pipe temp. fan mode fan mode revolution
Indoor Outdoor P (MPa) T1 (°C) T2 (°C) (rps)
20/- 7/6 10G2KVP-E 2.3 to 2.5 33 to 35 2 to 3 High High 48
13G2KVP-E 2.5 to 2.7 36 to 38 2 to 3 High High 44
16G2KVP-E 2.7 to 2.9 39 to 41 1 to 2 High High 64
NOTES :
1. Measure surface temperature of heat exchanger pipe around center of heat exchaner path U bent.
(Thermistor themometer)
2. Connecting piping condition : 5 m
– 21 –
8-1. Indoor Unit
FILE NO. SVM-14017
8. CONTROL BLOCK DIAGRAM
Heat Exchanger Sensor (TCJ)
Heat Exchanger Sensor (TC)
Room Temperature Sensor (TA)
Infrared Rays Signal Receiver
and Indication
Initializing Circuit
Clock Frequency
Oscillator Circuit
Power Supply
Circuit
Converter
(D.C circuit)
Noise Filter
M.C.U.
Functions
Indoor Unit Control Unit
· Cold draft preventing Function
· 3-minute Delay at Restart for Compressor
· Fan Motor Starting Control
· Processing
(Temperature Processing)
· Timer / Weekly Timer
· Serial Signal Communication
· Clean Function
· Power Selection
Serial Signal Transmitter/Receiver
Louver Motor
Drive Control
Indoor Fan
Motor Control
Louver
Motor
Indoor
Indoor
Fan Motor
Air purifier
unit
Micro Switch
Power Supply
REMOTE CONTROLLER
Serial Signal Communication
(Operation Command and Information)
Remote Controller
Operation ( )
Operation Mode Selection
AUTO, COOL, DRY, HEAT
Thermo. Setting
Fan Speed Selection
ON TIMER Setting
OFF TIMER Setting
Louver AUTO Swing
Louver Direction Setting
ECO
Hi-POWER
COMFORT SLEEP
Infrared Rays, 36.7kHz
COMFORT SLEEPPOWER-SEL
PURE
WEEKLY ON / OFF
– 22 −
8-2. Outdoor Unit (Inverter Assembly)
detect
Current
circuit
Gate drive
detect
Current
FILE NO. SVM-14017
Compressor
Outdoor
Fan motor
Inverter
(DC → AC)
P.M.V. : Pulse Motor Valve
M.C.U. : Micro Control Unit
MICRO-COMPUTER BLOCK DIAGRAM
M.C.U
MCC-5088 (P.C.B) OUTDOOR UNIT
PWM synthesis function
Input current release control
IGBT over-current detect control
·
·······
circuit
Indoor unit
send/receive
circuit
Gate drive
Outdoor fan control
High power factor correction control
Inverter output frequency control
A/D converter function
P.M.V. control
Discharge temp. control
4-way valve control
Signal communication to indoor unit
···
Demand control function
·
4MHz
Clock
frequency
circuit
High Power
factor Correction
Converter
(AC → DC)
sensor
Input current
Filter
Noise
Inverter
(DC → AC)
Relay
circuit
of P.M.V.
Driver circuit
valve
4-way
P.M.V.
220–240 V ~50Hz
For INDOOR UNIT
Discharge
temp. sensor
Outdoor air
temp. sensor
Suction temp.
– 23 –
sensor
temp.sensor
Heat exchanger
9. OPERATION DESCRIPTION
FILE NO. SVM-14017
9-1. Outline of Air Conditioner Control
This air conditioner is a capacity-variable type air
conditioner, which uses AC or DC motor for the indoor
for motor and the outdoor fan motor. And the capacityproportional control compressor which can change the
motor speed in the range from 11 to 96 rps is
mounted. The DC motor drive circuit is mounted to the
indoor unit. The compressor and the inverter to control
fan motor are mounted to the outdoor unit.
The entire air conditioner is mainly controlled by the
indoor unit controller.
The indoor unit controller drives the indoor fan motor
based upon command sent from the remote controller,
and transfers the operation command to the outdoor
unit controller.
The outdoor unit controller receives operation command from the indoor unit side, and controls the
outdoor fan and the pulse Modulating valve. (P.M.V)
Besides, detecting revolution position of the compressor motor, the outdoor unit controller controls speed of
the compressor motor by controlling output voltage of
the inverter and switching timing of the supply power
(current transfer timing) so that motors drive according
to the operation command.
And then, the outdoor unit controller transfers reversely
the operating status information of the outdoor unit to
control the indoor unit controller.
As the compressor adopts four-pole brushless
DC motor, the frequency of the supply power
from inverter to compressor is two-times cycles
of the actual number of revolution.
1. Role of indoor unit controller
The indoor unit controller judges the operation
commands from the remote controller and assumes
the following functions.
• Judgment of suction air temperature of the indoor
heat exchanger by using the indoor temp. sensor.
(TA sensor)
• Judgment of the indoor heat exchanger temperature 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 (Serial
signal) to the outdoor unit
• Reception of information of operation status
(Serial signal including outside temp. data) to the
outdoor unit and judgment/display of error
• Air purifier operation control
2. Role of outdoor unit controller
Receiving the operation command signal (Serial
signal) from the indoor unit controller, the outdoor
unit performs its role.
• Compressor operation control
• Operation control of outdoor fan motor
• P.M.V. control
• 4-way valve control
Operations followed to judgment
of serial signal from indoor side.
• Detection of inverter input current and current
release operation
• Over-current detection and prevention operation
to IGBT module (Compressor stop function)
• Compressor and outdoor fan stop function when
serial signal is off (when the serial signal does not
reach the board assembly of outdoor control by
trouble of the signal system)
• Transferring of operation information (Serial
signal) from outdoor unit controller to indoor unit
controller
• Detection of outdoor temperature and operation
revolution control
• Defrost control in heating operation (Temp.
measurement by outdoor heat exchanger and
control for 4-way valve and outdoor fan)
3. Contents of operation command signal
(Serial signal) from indoor unit controller to
outdoor unit controller
The following three types of signals are sent from
the indoor unit controller.
• Operation mode set on the remote controller
• Compressor revolution command signal defined
by indoor temperature and set temperature
(Correction along with variation of room temperature and correction of indoor heat exchanger
temperature are added.)
• Temperature of indoor heat exchanger
• For these signals ([Operation mode] and [Com-
pressor revolution] indoor heat exchanger temperature), the outdoor unit controller monitors the
input current to the inverter, and performs the
followed operation within the range that current
does not exceed the allowable value.
4. Contents of operation command signal
(Serial signal) from outdoor unit controller
to indoor unit controller
The following signals are sent from the outdoor unit
controller.
• The current operation mode
• The current compressor revolution
• Outdoor temperature
• Existence of protective circuit operation
For transferring of these signals, the indoor unit
controller monitors the contents of signals, and
judges existence of trouble occurrence.
Contents of judgment are described below.
• Whether distinction of the current operation
status meets to the operation command signal
• Whether protective circuit operates
When no signal is received from the outdoor
unit controller, it is assumed as a trouble.
– 24 –
9-2. Operation Description
1. Basic operation ........................................................................................................... 26
1. Operation control ................................................................................................... 26
2. Cooling/Heating operation ..................................................................................... 27
3. AUTO operation .....................................................................................................
4. DRY operation........................................................................................................ 28
2. Indoor fan motor control ............................................................................................. 29
3. Outdoor fan motor control........................................................................................... 31
4. Capacity control .......................................................................................................... 32
5. Current release control ............................................................................................... 32
6. Release protective control by temperature of indoor heat exchanger........................ 33
7. Defrost control (Only in heating operation) ................................................................ 34
8. Louver control ............................................................................................................. 36
1) Louver position....................................................................................................... 36
2) Air direction adjustment ......................................................................................... 34
3) Swing ..................................................................................................................... 34
FILE NO. SVM-14017
28
9. ECO operation ............................................................................................................ 39
10. Temporary operation................................................................................................... 40
11.
Plasma ionizer purifier control [Detection of abnormality] ......................................... 40
12. Discharge temperature control ................................................................................... 41
13. High pressure control.................................................................................................. 42
14. Pulse Modulating valve (P.M.V.) control ..................................................................... 42
15. Self-Cleaning function ................................................................................................ 43
16. Remote-A or B selection ............................................................................................ 44
17. QUIET mode ............................................................................................................. 45
18. COMFORT SLEEP mode ......................................................................................... 45
19. Short Timer ................................................................................................................ 45
20. Hi-POWER Mode ..................................................................................................... 46
21. POWER
22. Outdoor Quiet Control
F
CU Display lamp rightness control .....................................................................48
23.
O
4
2
peration mode setecable
.
selection mode
9-3. Auto Restart Function ..
....................................................................................47
.........................................................................................47
.......................................................
.............
..............49
9-3-1. How to Set the A uto Restart Function .............................. ........................................ 50
9-3-2. How to Cancel the Au to Restar t Function ................................................................ 51
9-3-3. Power Failure During Timer Operation ................................................................... 51
9-4. Remote Controller and Its Fuctions
9-4-1. Parts Name of Remote Contr oller .............................................................................. 52
9-4-2. Operation of remote control ...................................................................................... 52
9-4-3. Name and Functions of Indications on Remote Contr oller ........................................ 61
– 25 −
FILE NO. SVM-14017
Item
1. Basic
operation
1. Operation control
Receiving the user’s operation condition setup, the operation statuses of indoor/outdoor units are
controlled.
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.
The signal is received by a sensor of the indoor unit and processed by the indoor controllers as
3)
shown in the below. The power relay is tumed ON and power supply to the outdoor unit.
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/receives
the control status with a serial signal.
The outdoor controller controls the operation as shown in the below, and also controls the
6)
compres-sor, outdoor fan motor, 4-way valve and pulse Modulating valve are controlled
Selection of operation
conditions
ON/OFF
Operation flow and applicable data, etc.
Remote controller
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/QUIET/LOW/LOW+/MED/MED+/HIGH)
•
Contront air flow (wide angle/Right wide/Left wide/spot front/spot right/spot lift)
•
•
ECO
• ON timer setup
• OFF timer setup
• Hi-POWER
COMFORT SLEEP
•
QUIET
•
PRESET
•
ONE-TOUCH
•
•
POWER-SELECTION
A/B Selection function
•
Description
Indoor unit
Indoor unit control
Operation command
transmission
Outdoor unit
Transmission
Signal
receiving
signal Serial
signalSerial
Indoor unit control
• Command signal generating function for
indoor unit operation
• Calculation function (temperature
calculation)
• 3 minute delay function for compressor
reactivation
• Activation compensation function for indoor
fan
• Cold draft preventive function
•
Timer function
• Indoor heat exchanger release control
Power relay
Outdoor unit control
• Inverter output frequency
control
• Waveform composite function
•
Calculation function
(temperature calculation)
• AD conversion function
• Quick heating function
• Compressor reactivation delay
function
• Current release function
• GTr overload protective function
• Defrost operation function
• Outdoor temperature estimation
Inverter
• Indoor fan motor
• Louver motor
〜
Compressor•
• Outdoor fan motor
•
Pulse modulating valve
•
Four-way valve
– 26 –
FILE NO. SVM-14017
Item
1. Basic
operation
Operation flow and applicable data, etc.
Description
2. Cooling/Heating operation
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 signal
starts 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 and
4-way valve according to the operation signal sent from the indoor unit.
Remote control
settings
Operation ON
Indoor unit control
Indoor fan motor
revolution control
Power relay ON
Operation command
signal transmission
Outdoor unit control
Compressor revolution control
Outdoor fan motor revolution
control
Pulse modulating valve control
Four-way valve control
− 27 −
FILE NO. SVM-14017
Item
1. Basic
operation
Operation flow and applicable data, etc.
3. AUTO operation
Selection of operation mode
As shown in the following figure, the operation starts by
selecting automatically the status of room temperature
(Ta) when starting AUTO operation.
*1. When reselecting the operation mode, the fan
speed is controlled by the previous operation mode.
Ta
Cooling operation
Ts + 1
Monitoring (Fan)
Ts – 1
Heating operation
4. DRY operation
DRY operation is performed according to the difference
between room temperature and the setup temperature as
shown below.
In DRY operation, fan speed is controlled in order to
prevent lowering of the room temperature and to avoid air
flow from blowing directly to persons.
[°C]
+
+
Ta
1.0
0.5
L– (W5)
(W5+W3) / 2
SUL (W3)
Tsc
Fan speed
Description
Detects the room temperature (Ta) when
1)
the operation started.
2) Selects an operation mode from Ta in
the left figure.
3) Fan operation continues until an
operation mode is selected.
4) When AUTO operation has started
within 2 hours after heating operation
stopped and if the room temperature is
20°C or more, the fan operation is
performed with ”Super Ultra LOW” mode
for 3 minutes.
Then, select an operation mode.
In AUTO mode, either cooling or heating
5)
operation will be selected. When room
temperature reach set temperature
commpressor will stop. In case that the
compressor stops for 15 minutes, the
AUTO mode will reselect cooling or
heating operation.
1) Detects the room temperature (Ta) when
the DRY operation started.
2) Starts operation under conditions in the
left figure according to the temperature
difference between the room temperature and the setup temperature (Tsc).
Setup temperature (Tsc)
= Set temperature on remote controller
(Ts) + (0.0 to 1.0)
3) When the room temperature is lower
1°C or less than the setup temperature,
turn off the compressor.
− 28 −
FILE NO. SVM-14017
Item
2. Indoor fan
motor control
COOL ON
Fan speed setup
AUTO
Ta
[°C]
+2.5
a
+2.0
b
+1.5
c
+1.0
Operation flow and applicable data, etc.
<In cooling operation>
(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 in
MANUAL mode, and in 5 stages in AUTO mode, respectively. (Table 1)
MANUAL
(Fig. 1)
Indication
L
L+
M
M+
H
Quiet
Fan speed
W7
(L + M) / 2
WA
(M + H) / 2
WD
W5
(Fig. 2)
Air volume AUTO
M+(WC)
*3
*4
*5
*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
Description
* Symbols
UH : Ultra High
H : High
M+ : Medium+
M : Medium
L+ : Low+
L: Low
L- : Low–
UL : Ultra Low
SUL : Super Ultra Low
* The values of fan speed and air flow
volume indicate on the table are
measured when the louver is inclined
downward. Fan speed and air flow
volume broadly vary with position
of louver.
1) When setting the fan speed to L,
L+, M, M+,H or Quiet on the
remote controller, the operation is
performed with the constant
speed shown in Fig. 1.
2) When setting the fan speed to
AUTO on the remote controller,
revolution of the fan motor is
controlled to the fan speed level
shown in Fig. 2 and Table 1
according to the setup temperature, room temperature, and heat
exchanger temperature.
d
+0.5
Tsc
e
L(W7)
(Table 1) Indoor fan air flow rate
Fan speed
Level
WF
WE
WD
WC
WB
WA
W9
W8
W7
W6
W5
W4
W3
W2
W1
Cool Heat PAP Dry
UH UH/H
UH H
H M+ UH
M+ M+ H
M M+
M M/L+ M
L+
L+ L L+
L L- L
L- L
UL UL L- L-
SUL UL
SUL SL
SUL/SL-
SL-
UL
Cooling Heating Cooling Heating Cooling Heating
Fan speed Air Flow rate Fan speed Air Flow rate Fan speed Air Flow rate Fan speed Air Flow rate Fan speed Air Flow rate Fan speed Air Flow rate
(rpm)
1060 661 1080 676 1100 690 1140 731 1120 713 1160 746
1060 661 1080 676 1100 698 1140 731 1120 713 1160 746
1040 647 930 551 1080 676 990 611 1100 690 1010 621
900 527 930 551 930 551 990 611 950 567 1010 621
900 527 780 423 930 551 840 475 950 567 860 493
760 409 780 423 780 423 840 475 800 442 860 493
760 409 710 368 780 423 750 401 800 442 770 416
690 349 640 305 710 368 660 322 730 384 680 338
620 287 560 243 640 305 600 274 660 322 620 287
520 205 560 243 560 243 600 274 580 255 620 287
500 187 540 224 540 224 580 255 560 243 600 274
480 173 500 187 520 205 560 243 540 224 580 255
460 155 480 173 500 187 540 224 520 205 560 243
450 147 460 155 480 173 520 205 500 187 540 224
440 142 440 142 440 142 440 142 440 142 440 142
(Linear approximation
from M+ and L)
RAS-10G2KVP-E RAS-13G2KVP-E RAS-16G2KVP-E
(m3/h)
(rpm)
(m3/h)
(rpm)
(m3/h)
(rpm)
(m3/h)
(rpm)
(m3/h)
(rpm)
(m3/h)
– 29 –
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