Refrigerant
Composition (Ratio)
Refrigerant handling
Chlorine
Safety group (ASHRAE)
Molecular weight
Boiling point (:)
Steam pressure [25:](Mpa)
Saturated steam density [25:](Kg/K)
Combustibility
ODP w1
GWP w2
Refrigerant charge method
Additional charge on leakage
Kind
Color
Smell
New SpecificationCurrent Specification
w1:Ozone Destruction Parameter : based on CFC-11
w2 :Global Warmth Parameter : based on CO
2
The incompatible lubricant easily separates from refrigerant
and is in the upper layer inside the suction muffler.
Raising position of the oil back hole enables to back the
lubricant of the upper layer to the compressor.
Since refrigerant and lubricant are compatible each, lubricant
backs to the compressor through the lower position oil back
hole.
Compressor
Suction muffler
Oil back hole
Lubricant
Refrigerant
Compressor
Suction muffler
Oil back hole
Lubricant /Refrigerant
Compressor
INFORMATION FOR THE AIR CONDITIONER WITH R-410A REFRIGERANT
• This room air conditioner adopts R-410A of HFC refrigerant which never destroys the ozone layer.
Pay attention following points.
1 As R-410A working pressure is 1.6 times higher than that of R-22 of previous refrigerant, dedicated tools and piping are
required.
2 R-410A is more affected by water and contaminations than R-22. Keep R-410Aaway from water and contaminations during
storage and while installing.
3 Use clean dedicated piping materiales for R-410A only which are strong enough against R-410Apressure. Never use any
current pipes designed for R-22.
4 Composition change may occur in R-410A since it is a mixed refrigerant. When charging, charge liquid refrigerant to prevent
composition change.
NOTE : The unit of pressure has been changed to MPa on the international system of units(SI unit system).
The conversion factor is: 1(MPa • G) =10.2(kgf/ff• G)
2
-30 -20 -1001020
30
405060
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
(MPa.G)
R-410A
R-22
Conversion chart of refrigerant temperature and pressure
Saturated liquid pressure
(;)
NOTE : The unit of pressure has been changed to MPa on the
R-410A tools
Can R-22 tools be used?
Gas leak detector
R-410A pressures beyonds the measurement range of R-22
gauges. Port diameters have been changed to prevent other kinds of
refrigerant from being charged into the units.
Hose material and cap size have been changed to improve the pressure
resistance.
Dedicated for HFC refrigerant.
1/4 and 3/8 wrenches can be used for both R-22 and R-410A units.
Description
Clamp bar hole has been enlarged to reinforce the spring strength in the tool.
Provided for flaring work (to be used with R-22 flare tool).
Provided to prevent the back flow of oil. This adapter enables you to use
vacuum pumps.
It is difficult to measure R-410A with a charging cylinder because the
refrigerant bubbles due to high pressure and high-speed vaporization
No
No
No
Yes
Yes
Newly required
Newly required
Newly required
Gauge manifold
Charge hose
Torque wrench
Flare tool
Flare gauge
Vacuum pump
adapter
Electronic scale for
refrigerant charging
No : Not Substitutable for R-410A Yes : Substitutable for R-410A
Wall
thickness
Outside diameter
Pipe
mminch
For liquid
For gas
6.35
9.52
1/4
3/8
0.8 mm
0.8 mm
Heat resisting foam plastic
Specific gravity 0.045 Thickness 8 mm
Insulation material
international system of units(SI unit system).
The conversion factor is: 1(MPa • G) =10.2(kgf/ff• G)
1.Tools dedicated for the air conditioner with R-410A refrigerant
The following tools are required for R-410A refrigerant. Some R-22 tools can be substituted for R-410Atools.
The diameter of the service port on the outdoor unit operation valve has been changed to prevent improper refrigerant
charging. Cap size has also been changed from 7/16 UNF with 20 threads to 1/2 UNF with 20 threads.
2.Refrigerant piping
1 Specifications
Use the refrigerant pipes that meet the following specifications.
• Use a copper pipe or a coppor-alloy seamless pipe with a thickness of 0.7 mm or less, as the pressure resistance is in
2 Flaring work and flare nut
sufficient.
Flaring work for R-410A pipes differs from that for the existing refrigerant pipes.
for details of flaring work, refer to Installation manual “6-1 FLARING WORK”.
Apply the special refrigeration oil (accessories) to the flare and the union seat surfaces.
4.Air purge
Use the vacuum pump for air purging for the purpose of environmental protection.
5.Additional charge
For additional charging, charge the refrigerant from liquid phase of the gas cylinder. If the refrigerant is charged from the
gas phase, composition chang may occur in the refrigerant inside the cylinder and the outdoor unit. However, charging the
liquid refrigerant all at once may cause the compressor to be locked. Thus, charge the refrigerant slowly.
Gas cylinder
2
PART NAMES AND FUNCTIONS
MSZ-A09RVMSZ-A12RV-
INDOOR UNIT
Air cleaning
filter(white bellows
type)
Deodorizing filter
(gray sponge type)
Air filter
Outdoor unit
Valve
Refrigerant gas cylinder
for R-410A with siphon
Electronic scale for refrigerant charging
E1
E1
Grille
Air inlet
to Breaker
Power supply cord
Liquid
Front panel
Vertical vanes
Operation section
(When the grille is open)
Emergency operation switch
Remote control
receiving section
Horizontal vane
Remote
controller
Display section
Operation Indicator
Receiving section
4
Signal transmitting section
Operation display section
OPERATE /STOP
(ON /OFF)button
OPERATION SELECT button
FAN SPEED CONTROL button
ON-TIMER button
CLOCK SET button
HR. button
MIN. button
(TIME SET button)
TEMPERATURE buttons
VANE CONTROL button
OFF-TIMER button
RESET button
ON/OFFTOO
WARM
TOO
COOL
HR.MIN.
CLOCK
RESET
CLOCK
MODE
FAN
VANE
START
STOP
ECONO COOL button
ECONO COOL
I FEEL
COOL DRY HEAT
600
1100
AM
PM
SWING
SWING button
MUZ-A09RVMUZ-A12RV-
E1
E1
OUTDOOR UNIT
Air inlet
Piping
Drain hose
Air outlet
Drain outlet
MSZ-A09RVMSZ-A12RV-
E1
E1
REMOTE CONTROLLER
5
3
Indoor model
Function
Power supply
Capacity
Air flow(Hi)
Dehumidification
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Fan motor current
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Air direction
Sound level (Hi)
Fan speed (Hi)
Fan speed regulator
RT11(at25:)
Thermistor RT12(at25:)
RT13(at25:)
Outdoor model
Outdoor air flow
Compressor motor current
Fan motor current
Model
Output
Winding
resistance(at20:)
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Sound level
Fan speed
Fan speed regulator
Refrigerant filling
capacity(R-410A)
Refrigerating oil (Model)
NAME
VARISTOR
ROOM TEMPERATURE
THERMISTOR
INDOOR COIL
THERMISTOR (MAIN)
INDOOR COIL
THERMISTOR (SUB)
SYMBOL
SR141
TB
52C
NAME
SOLID STATE RELAY
TERMINAL BLOCK
CONTACTOR
10
MUZ-A09RV- MUZ-A12RV- MODELS WIRING DIAGRAM
E1E1
OUTDOOR UNIT
220-240V ~
SYMBOL
CT61
C61,C62
C65
DSA61
F801
F901
IC950
IPM
LEV
L61
NOISE FILTER P.C BOARD
R65
X64
LDNF2
CT61
LD-E
GRN
DSA61
NR61
TB1
3
12V
FROM INDOOR UNIT
CONNECTING
RED
WHT
2
BLU
N
TAB61
L61
TAB62
BLU
GRN/YLW
NAME
CURRENT TRANSFORMER
SMOOTHING CAPACITOR
OUTDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE (2A)
FUSE (2A)
DC/DC CONVERTER
INTELLIGENT POWER MODULE
EXPANSION VALVE COIL
CMC COIL
BLU
TAB72
SSR61
CN913
21S4
L63
LDNF1
WHT
RELAY
TAB71
P.C
BOARD
F901
C65
12
ORG
SYMBOL
L63
L64
MC
MF61
NR61
PFC
RT61
RT62
RT64
R61,62
TAB68
TAB69
CN912
CN
X61
X62
WHT
BLU
CN914
3
2
911
1
654321
LD62
LD61
4
CN779CN778
4
3
2
CN726
1
CN771
ELECTRONIC
R61
R62
C61
C62
IC950
TRANS
CONTROL
BLK
RED
WHT
YLW
5
MF61
COIL
REACTOR
COMPRESSOR
OUTDOOR FAN MOTOR (INNER FUSE)
VARISTOR
POWER FACTOR CONTROL MODULE
DISCHARGE TEMPERATURE THERMIST OR
DEFROST THERMISTOR
FIN TEMPERATURE THERMIST OR
CURRENT-DETECTING RESISTOR
P.C BOARD
CN601
231
NAME
PFC
+
+
F801
R64
6
5
4
3
2
CN641
1
-
1
2
CN642
SYMBOL
R64
R65
SSR61
TB1, TB2
X61, X62
X64
21S4
6
LEV
+
U
V
W
RT64
CN724
TAB75
TAB76
LD65
LD66
LD67
V
GRY
TB2
BLK
1
2
BLK
WHT
RED
3
RED
~
~
P
N
IPM
RT61
RT62
MC
NAME
CURRENT-DETECTING RESISTOR
CURRENT-LIMITING RESISTOR
SOLID STATE RELAY
TERMINAL BLOCK
RELAY
RELAY
REVERSING VALVE COIL
(COOLING TURN ON)
GRY
BLK
21
WHT
W
L64
BLK
U
NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.
Height difference should be within
5m regardless of which unit,
indoor or outdoor position is high.
w Max. Height
difference 8m
Indoor
unit
Outdoor unit
Indoor
heat
exchanger
Outdoor
heat
exchanger
Distributor
Flared connection
Room temperature
thermistor
RT11
Indoor coil
thermistor
RT13(sub)
Defrost
thermistor
RT62
Discharge
thermistor
RT61
Flared connection
Stop valve
Stop valve
(with service port)
Capillary tube
Capillary tube
(2 pcs)
Refrigerant flow in cooling
Compressor
Accumulator
Maffler
Muffler
Reversing valve
Refrigerant flow in heating
Refrigerant pipe [9.52
(Option)
Refrigerant pipe [6.35
(Option)
Indoor coil
thermistor
RT12(main)
Expansion
valve
[3.0o[2.0o200
[3.0o[2.0o300
REFRIGERANT SYSTEM DIAGRAM
MSZ-A09RV MSZ-A12RV -
Unit : mm
E1
E1
MUZ-A09RV MUZ-A12RV -
E1
E1
INDOOR UNIT
MAX. REFRIGERANT PIPING LENGTH
Additional piping
Model
MSZ-A09RVMSZ-A12RV-
E1
E1
Max. length :mm
A
12
OUTDOOR UNIT
Piping size O.D : mm
GasLiquidIndoor unitOutdoor unit
9.526.350.430
Length of connecting pipe : m
MAX. HEIGHT DIFFERENCE
ADDITIONAL REFRIGERANT CHARGE (R-410A:g)
Model
MSZ-A09RVMSZ-A12RV-
Outdoor unit precharged
E1
E1
For additional charging, charge the refrigerant from liquid phase of the gas cylinder.
If the refrigerant inside the cylinder and the outdoor unit.
However, charging the liquid refrigerant all at once may cause the compressor to be locked.
Thus, charge the refrigerant slowly.
1100
7m
0
Refrigerant piping length (one way)
30
12
9m8m
60
11m10m
12090
Calculation : Xg=30g /m✕ (A-7)m
12m
150
PERFORMANCE CURVES8
The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions.
Since operating conditions vary according to the areas where these units are installed. The following information has been
provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.
(1) GUARANTEED VOLTAGE
Rated voltage : ±10% (198 ~ 242V ),50Hz
(2) AIR FLOW
Air flow should be set at MAX.
(3) MAIN READINGS
(1) Indoor intake air wet-bulb temperature ::WB
(2) Indoor discharge air wet-bulb temperature ::WB
(3) Outdoor intake air dry-bulb temperature ::DB
(4) Total input:W
(5) Indoor intake air dry-bulb temperature::DB
(6) Outdoor intake air wet-bulb temperature::WB
(7) Total input:W
Indoor air wet-bulb temperature difference on the left side of the chart on next page shows the difference between the
indoor intake air wet-bulb temperature and the indoor discharge air wet-bulb temperature for your reference at service.
E1
Cooling
}
Heating
}
How to measure the indoor air wet-bulb temperature difference
1. Attach at least 2 sets of wet-and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets
of wet-and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air
speed is high.
2. Attach at least 2 sets of dry-bulb thermometers to the outdoor air intake.
Cover the thermometers to prevent direct rays of the sun.
3. Check that the air filter is cleaned.
4. Open windows and doors of room.
5. Press the EMERGENCY OPERATION switch once (twice) to start the EMERGENCY COOL (HEAT) MODE.
6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.
7. 10 minutes later, measure temperature again and check that the temperature does not change.
INDOOR UNIT
OUTDOOR UNIT
13
7.4
6.9
6.3
5.8
5.3
4.8
MSZ-A09RV- E1
8.5
7.9
7.3
6.7
6.1
5.5
MSZ-A12RV- E1
050100150(Hz)
0.0
0.5
1.0
1.5
Correction of Cooling capacity
Capacity correction factors
The operational frequency of compressor
050100150(Hz)
0.0
0.5
1.0
1.5
Correction of Cooling capacity
Capacity correction factors
The operational frequency of compressor
Cooling capacity
MUZ-A09RV -
MUZ-A12RV -
E1
MUZ-A09RV -
E1
Correction of total input
2.0
1.5
1.0
0.5
Capacity correction factors
050100150(Hz)
The operational frequency of compressor
E1
MUZ-A12RV -
E1
Correction of total input
2.0
1.5
1.0
0.5
Capacity correction factors
050100150(Hz)
The operational frequency of compressor
14
27.1
25.1
23.0
20.9
18.8
16.7
14.6
12.5
30.4
28.1
25.8
23.4
21.1
18.7
16.4
14.1
MSZ-A12RV- E1
MSZ-A09RV- E1
050100150(Hz)
0.0
0.5
1.0
1.5
Correction of Heating capacity
Capacity correction factors
The operational frequency of compressor
050100150(Hz)
0.0
0.5
1.0
1.5
Correction of Heating capacity
Capacity correction factors
The operational frequency of compressor
Heating capacity
Correction of total input
Capacity correction factors
The operational frequency of compressor
050100150(Hz)
0.5
1.0
1.5
Correction of total input
Capacity correction factors
The operational frequency of compressor
050100150(Hz)
0.5
1.0
1.5
NOTE:The above curves are for the heating operation without any frost.
MUZ-A09RV -
MUZ-A12RV -
E1
E1
MUZ-A09RV -
MUZ-A12RV -
E1
E1
15
OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
(MPa • G)
(kgf/F • G)
(reference)
1832
62Hz
1520
50
25
60
30
70(%)
35(:)
0.6
0.7
0.8
0.9
1.0
1.1
62Hz
6
7
8
9
10
11
12
1.2
220V
240V
1520
50
25
60
30
70(%)
35(:)
3
4
5
6
7
83Hz
32
18
1520
50
25
6030 70(%)
35(:)
1
2
3
4
5
32
18
220V
240V
53Hz
How to operate with fixed operational frequency of the compressor.
1. Press the EMERGENCY OPERATION switch on the front of the indoor unit , and select either the COOLmode or the
HEAT mode before starting to operate the air conditioner.
2. The compressor starts up.
The operational frequency of the compressor is 83Hz in the COOL mode and 58Hz in the HEAT mode.
3. The fan speed of the indoor unit is Hi.
4. This operation continues for 30minutes.
5. In order to release this operation, press the EMERGENCY OPERATION switch again, press any button on the remote
controller.
NOTE : The unit of pressure has been changed to MPa on the international system of units(SI unit system).
The conversion factor is: 1(MPa • G) =10.2(kgf/ff• G)
COOL operation
1 Both indoor and outdoor unit are under the same temperature/humidity condition.