Technibel MCA451R Manual

TECHNICAL DATA & SERVICE MANUAL
Indoor Unit Outdoor Unit
MCA451R GR451R
MCA601R GR601R
SPLIT SYSTEM AIR CONDITIONER
INDOOR UNIT
OUTDOOR UNIT
0.8180.247.1 06/2002

i
Important!
Please Read Before Starting
This air conditioning system meets strict safety and
operating standards. As the installer or service person,
it is an important part of your job to install or service the
system so it operates safely and efficiently.
For safe installation and trouble-free operation, you
must:
●Carefully read this instruction booklet before
beginning.
●Follow each installation or repair step exactly as
shown.
●Observe all local, state, and national electrical codes.
●Pay close attention to all warning and caution notices
given in this manual.
This symbol refers to a hazard or
unsafe practice which can result
in severe personal injury or
death.
This symbol refers to a hazard or
unsafe practice which can result
in personal injury or product or
property damage.
If Necessary, Get Help
These instructions are all you need for most installation
sites and maintenance conditions. If you require help
for a special problem, contact our sales/service outlet
or your certified dealer for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for
improper installation or maintenance service, including
failure to follow the instructions in this document.
Special Precautions
When Wiring
ELECTRICAL SHOCK CAN CAUSE
SEVERE PERSONAL INJURY OR
DEATH. ONLY A QUALIFIED,
EXPERIENCED ELECTRICIAN SHOULD
ATTEMPT TO WIRE THIS SYSTEM.
• Do not supply power to the unit until all wiring and
tubing are completed or reconnected and checked.
• Highly dangerous electrical voltages are used in this
system. Carefully refer to the wiring diagram and
these instructions when wiring. Improper connections
and inadequate grounding can cause accidental
injury or death.
• Ground the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause
overheating at connection points and a possible fire
hazard.
WARNING
CAUTION
WARNING
When Transporting
Be careful when picking up and moving the indoor and
outdoor units. Get a partner to help, and bend your
knees when lifting to reduce strain on your back. Sharp
edges or thin aluminum fins on the air conditioner can
cut your fingers.
When Installing…
…In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the
unit’s weight. It may be necessary to construct a strong
wood or metal frame to provide added support.
…In a Room
Properly insulate any tubing run inside a room to
prevent “sweating” that can cause dripping and water
damage to walls and floors.
…In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to
provide a solid, level foundation for the outdoor unit.
This prevents water damage and abnormal vibration.
…In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a
metal frame. Provide a suitable air baffle.
…In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is
higher than drifting snow. Provide snow vents.
When Connecting Refrigerant Tubing
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces
of the flare and union tubes before connecting them,
then tighten the nut with a torque wrench for a leak-
free connection.
• Check carefully for leaks before starting the test run.
When Servicing
• Turn the power off at the main power box (mains)
before opening the unit to check or repair electrical
parts and wiring.
• Keep your fingers and clothing away from any
moving parts.
• Clean up the site after you finish, remembering to
check that no metal scraps or bits of wiring have
been left inside the unit being serviced.
Others
• Ventilate any enclosed areas when installing or
testing the refrigeration system. Escaped refrigerant
gas, on contact with fire or heat, can produce
dangerously toxic gas.
• Confirm upon completing installation that no
refrigerant gas is leaking. If escaped gas comes in
contact with a stove, gas water heater, electric room
heater or other heat source, it can produce
dangerously toxic gas.
CAUTION

Pa
g
e
1. OPERATING RANGE 1
2. SPECIFICATIONS 2
2-1. Unit Specifications 2
2-2. Ma
j
or Component Specifications 4
2-3. Other Component Specifications 7
3. DIMENSIONAL DATA 8
4. REFRIGERANT FLOW DIAGRAM 10
5. PERFORMANCE DATA 12
5-1. Performance Charts 12
5-2. Air Throw Distance Chart 13
5-3. Cooling Capacity 14
5-4. Heating Capacity 16
6. ELECTRICAL DATA 17
6-1. Electrical characteristics 17
6-2. Electrical Wiring Diagrams 19
7. FUNCTION 20
7-1 Cool Mode Operation 20
7-2 Heat Mode Operation 21
7-3 Auto Mode Operation 22
7-4 Dry Mode Operation 23
7-5 Fan Mode Operation 23
7-6 Protection Operations in Cool and Dry Modes 24
7-7 Protection Operations in Heat Mode 26
7-8 Cold Draft Prevention (Heating) 29
7-9 Sleep Function 30
7-10 Daily Timer Function 30
7-11 IFEEL Function 30
7-12 Louver Control 30
7-13 Manual Unit Control and Led Indicators 31
7-14 Recovery from Power Failure 31
8. TROUBLESHOOTING 32
8-1 Check before and after troubleshooting 32
8-2 Air conditioner does not operate 33
8-3 Some part of air conditioner does not operate 37
8-4 Air conditioner operates, but abnormalities are observed 39
8-5 If a sensor is defective 41
9. CHECKING ELECTRICAL COMPONENTS 42
9-1 Measurement of Insulation Resistance 42
9-2 Checkin
g
Continuit
y
of Fuse on PCS Ass'
y
43
9-3 Checking Motor Capacitor 43
Table of Contents
ii

1
1. OPERATING RANGE
Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.
Cooling Maximum 32°C D.B. / 23°C W.B. 46°C D.B.
Minimum 19°C D.B. / 14°C W.B. 19°C D.B.
Heating Maximum 27°C D.B. 24°C D.B. / 18°C W.B.
Minimum / –8°C D.B. / –9°C W.B.

2
2. SPECIFICATIONS
2-1. Unit Specifications
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks: Rating conditions are:
Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.
Outdoor air temperature 35°C D.B. / 24°C W.B.
Heating: Indoor air temperature 20°C D.B.
Outdoor air temperature 7°C D.B. / 6°C W.B.
Power Source 230 V Single phase 50 Hz
Voltage rating V 230
Cooling Heating
Capacity W 4400 5000
BTU/h 15020 17065
Air circulation (High) m3/h 760
Moisture removal (High) Liters/h 2.3 —
Available voltage range V 198 to 264
Running amperes A7.27.0
Power input W1570 1500
Power factor %94.8 93.2
C.O.P. W/W 2.80 3.33
Compressor locked rotor amperes A43
Controls / Temperature control Microprocessor / I.C. thermostat
Control unit Wireless remote control unit
Timer ON/OFF 24 hours and program
Fan speeds Indoor / Outdoor 3 and Auto /1-Hi
Airflow direction (Indoor) Horizontal Manual
Vertical Auto
Air filter Washable
Compressor Rotary (Hermetic)
Refrigerant / Amount charged at shipment gR22 / 1250
Refrigerant control Capillary tube
Noise power level Indoor – Hi / Me / Lo dB-A 55 / 51 / 49
Outdoor – Hi dB-A 65
Refrigerant tubing connections Flare type
Max. allowable tubing length at shipment m 7.5
Refrigerant tube Narrow tube mm (in.) 6.35 (1/4)
diameter Wide tube mm (in.) 12.7 (1/2)
Indoor Unit Outdoor Unit
Unit dimensions Height mm 285 630
Width mm 995 830
Depth mm 206 305
Package dimensions Height mm 276 713
Width mm 1,070 994
Depth mm 363 413
Weight Net
kg 12.0 52
Shipping kg 15.0 57
Shipping volume m30.11 0.29
Dimensions & Weight Features Electrical Rating Performance
Indoor Unit MCA451R
Outdoor Unit GR451R

3
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks: Rating conditions are:
Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.
Outdoor air temperature 35°C D.B. / 24°C W.B.
Heating: Indoor air temperature 20°C D.B.
Outdoor air temperature 7°C D.B. / 6°C W.B.
Power Source 230 V Single phase 50Hz
Voltage rating V 230
Cooling Heating
Capacity W 55006200
BTU/h 1877021160
Air circulation (High) m3/h 760
Moisture removal (High) Liters/h 2.7 —
Available voltage range V 198 to 264
Running amperes A10 10.2
Power input W2200 2100
Power factor %95.6 89.5
C.O.P. W/W 2.52.95
Compressor locked rotor amperes A57
Controls / Temperature control Microprocessor / I.C. thermostat
Control unit Wireless remote control unit
Timer ON/OFF 24 hours and program
Fan speeds Indoor / Outdoor 3 and Auto / 1
Airflow direction (Indoor) Horizontal Manual
Vertical Auto
Air filter Washable
Compressor Rotary (Hermetic)
Refrigerant / Amount charged at shipment gR22 / 1570
Refrigerant control Capillary tube
Noise power level Indoor – Hi / Me / Lo dB-A 55 / 51 / 49
Outdoor – Hi dB-A 65
Refrigerant tubing connections Flare type
Max. allowable tubing length at shipment m 7.5
Refrigerant tube Narrow tube mm (in.) 6.35 (1/4)
diameter Wide tube mm (in.) 12.7 (1/2")
Indoor Unit Outdoor Unit
Unit dimensions Height mm 285 630
Width mm 995 830
Depth mm 206 305
Package dimensions Height mm 276 713
Width mm 1,070 994
Depth mm 363 413
Weight Net
kg 12.0 55
Shipping kg 15.0 60
Shipping volume m3
0.11 0.29
Dimensions & Weight Features Electrical Rating Performance
Indoor Unit MCA601R
Outdoor Unit GR601R

4
2-2. Major Component Specifications
2-2-1. Indoor Unit
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Part No. WSA
Controls Microprocessor
Control circuit fuse 250 V – 3.15 A
Remote Control Unit RC–2 (RC)
Type Cross-flow
Q´ty ... Dia. and length mm 1 ... ø88 / L746
Fan motor model ... Q´ty UF2– 31A5PA–S ... 1
No. of poles ...Cool / Heat rpm (High) 2 ... 1305 / 1335
Nominal output W 30
Coil resistance (Ambient temp. 20°C) ΩWHT – BRN : 130.4
WHT – PNK : 169.8
– : –
– : –
– : –
Safety Type Thermal protector
devices Operating temp. Open °C 130 ± 8
Close Automatic reclosing
Run capacitor µF 2.0
VAC 440
Type Stepping motor
Model MP24GA2
Rating DC 12 V
Coil resistance (Ambient temp. 20°C) ΩEach terminals (1–2, 1–3, 1–4, 1–5) 400 : ± 7%
Coil Aluminium plate fin / Copper tube
Rows 2
Fin pitch mm 1.3
Face area m2 0.250
Heat
Exch. Coil Flap Motor Fan & Fan Motor
Controller
PCB
Indoor Unit MCA451R MCA601R

5
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Type Rotary (Hermetic)
Compressor model PH 28 VSRT
Nominal output W1250
Compressor oil ... Amount cc DIAMOND MS 32(N1)...670
Coil resistance (Ambient temp. 20°C) ΩC – R : 1.43
C – S : 2.40
Type Internal protector
Safety
devices Operating temp. Open °C Automatic opening
Close °C Automatic reclosing
Operating amp.(Ambient temp. 25°C) Automatic
Run capacitor µF40
VAC 450
Type Propeller
Number ... Dia. mm 1 ... ø 400
Fan motor model ... Number KFG6-51SB5P....... 1
No. of poles ... rpm (230 V, High) 6 ... 910
Nominal output W40
Coil resistance (Ambient temp. 20°C) ΩWHT – BRN : 98.5
WHT – PNK : 201
Safety Type Thermal protector
devices Operating temp. Open °C 130 ± 5
Close °C 83 ± 15
Run capacitor µF 2.0
VAC 440
Coil Aluminium plate fin / Copper tube
Rows 1
Fin pitch mm 1.3
Face area m20.5
External Finish Acrylic baked-on enamel finish
Heat
Exch. Coil CompressorFan & Fan Motor
Outdoor Unit GR451R

6
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Type Rotary (Hermetic)
Compressor model PH 36 VTRT
Nominal output W1600
Compressor oil ... Amount cc DIAMOND MS 32(N1)...900
Coil resistance (Ambient temp. 20°C) ΩC – R : 1.06
C – S : 2.03
Type Internal protector
Safety
devices Operating temp. Open °C Automatic opening
Close °C Automatic reclosing
Operating amp.(Ambient temp. 25°C) Automatic
Run capacitor µF55
VAC 450
Type Propeller
Number ... Dia. mm 1 ... ø 400
Fan motor model ... Number KFG6-51SB5P....... 1
No. of poles ... rpm (230 V, High) 6 ... 910
Nominal output W40
Coil resistance (Ambient temp. 20°C) ΩWHT – BRN : 98.5
WHT – PNK : 201
Safety Type Thermal protector
devices Operating temp. Open °C 130 ± 5
Close °C 83 ± 15
Run capacitor µF 2.0
VAC 440
Coil Aluminium plate fin / Copper tube
Rows 2
Fin pitch mm 1.6
Face area m20.487
External Finish Acrylic baked-on enamel finish
Heat
Exch. Coil CompressorFan & Fan Motor
Outdoor Unit GR601R

2-3. Other Component Specifications
7
4-way Valve (20S) SQ-136 (Coil), SHF-7K-34U (Valve)
Coil rating 230 V ~ 50 Hz - 6 W
Coil resistance (at 20 °C) Ω
1440 ±5%
Outdoor Unit GR451R GR601R
Thermistor (Coil sensor) NTC -SENSOR
Resistance (at 25°C) kΩ10 ±5%
Indoor Unit MCA451R MCA601R
Thermistor (Room sensor) NTC -SENSOR
Resistance (at 25°C) kΩ10 ±5%
Power Relay (PR) G7L-2A-TUB
Coil rating AC 200–240V, 50/60 Hz
Coil resistance (at 23 °C) Ω21 ± 15%
Contact rating AC 220V, 25A
Thermistor (Coil sensor) NTC -SENSOR
Resistance (at 25°C) kΩ10 ±1%

8
3. DIMENSIONAL DATA
Indoor Unit MCA451R MCA601R
28545
995
45
147.5 147.5
206(3)
Remote control unit
Center of tubing
hole (2 places)
Narrow tube ø6.35 (1/4")
Drain hose ø18
Wide tube ø12.7 (1/2") MCA451,601R
61 18.5
172.5
Unit : mm

9
Outdoor Unit GR451R GR601R
Air discharge
Air intake
538 146
307 337
4 – ø12 holes
830
19
630
305
61
95
Wide tube service valve
ø12.7 (1/2")
Narrow tube service valve
ø6.35 (1/4")
Unit : mm

4. REFRIGERANT FLOW DIAGRAM
10

Insulation of Refrigerant Tubing
Because capillary tubing is used in the outdoor unit, both the
wide and narrow tubes of this air conditioner become cold. To
prevent heat loss and wet floors due to dripping of
condensation, both tubes must be well insulated with a
proper insulation material. The thickness of the insulation
should be a min. 8 mm.
After a tube has been insulated,
never try to bend it into a narrow
curve because it can cause the tube
to break or crack.
IMPORTANT
CAUTION
Wide tube
Thickness:
Min. 8 mm
Insulation
Narrow tube
Thickness:
Min. 8 mm
11

5. PERFORMANCE DATA
5-1. Performance charts
Indoor Unit MCA451R MCA601R
Outdoor Unit GR451RGR601R
Indoor inlet air
D.B. temp. (°C)
Outdoor
fan speed
HighLow
1.38 (13)
1.28 (12)
1.18 (11)
1.08 (10)
0.98 ( 9 )
0.89 ( 8 )
0.79 ( 7 )
0.69 ( 6 )
25 30 35 40 45 50
Outdoor inlet air D.B. temp. (°C)
Low pressure at wide tube serveice valve MPa (kgf/cm2G)
0.59 ( 5 )
0.49 ( 4 )
0.39 ( 3 )
■Cooling Characteristics ■Heating Characteristics
Indoor inlet air
D.B. temp. (°C)
3.44 (34)
3.24 (32)
2.95 (30)
2.85 (28)
2.65 (26)
2.46 (24)
2.26 (22)
2.06 (20)
–5 0 5 10 15 20
Outdoor inlet air D.B. temp. (°C)
High pressure at wide tube serveice valve MPa (kgf/cm2G)
1.87 (18)
1.67 (16)
1.47 (14) 25
Indoor inlet air
D.B. temp. (°C)
14
13
12
11
10
9
8
7
625 30 35 40 45 50
Outdoor inlet air D.B. temp. (°C)
Operating current (A)
15
Indoor inlet air
D.B. temp. (°C)
Outdoor
fan speed
HighLow
13
12
11
10
9
8
7
6–5 0 5 10 15 20
Outdoor inlet air D.B. temp. (°C)
Operating current (A)
25
14
15
32
27
21
27
20
16
27
20
16
32
27
21
Overload prevention operates to protect the air conditioner when outdoor ambient temperature reaches extremely
high in heating mode. (Refer to “8-5 Overload prevention”)
● ...... Points of Rating condition
Black dots in above charts indicate the following rating conditions.
Cooling: Indoor air temperature 27°C D.B./19°C W.B. Heating: Indoor air temperature 20°C D.B.
Outdoor air temperature 35°C D.B./24°C W.B. Outdoor air temperature 7°C D.B./6°C W.B.
NOTE
12

5-2. Air Throw Distance Chart
Horizontal distance (m)
Axis air velocity (m/s)
Vertical distance (m)
Room air temp. : 20°C
Fan speed : High
Heating
Horizontal distance (m)
Axis air velocity (m/s)
Vertical distance (m)
Room air temp. : 27°C
Fan speed : High
Cooling
0
1
2
3
4
0123456789
: Flap angle 0° , : Axis air velocity 0°
: Flap angle 30°, : Axis air velocity 30°
0
1
2
3
4
0123456789
: Flap angle 45° , : Axis air velocity 45°
: Flap angle 60° , : Axis air velocity 60°
13
Indoor Unit MCA451R MCA601R

5-3. Cooling Capacity
INDOOR UNIT: MCA451R
OUTDOOR UNIT: GR451R
RATING CAPACITY 4,4 kW
AIR FLOW RATE 760 m³/h
EVAPORATOR CONDENSER
ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C
W.B. D.B. 25 30 35 40 43
TC 4,17 4,05 3,85 3,62 3,34
CM 1,29 1,38 1,48 1,63 1,77
21 SHC 2,86 2,80 2,71 2,59 2,46
23 SHC 3,24 3,18 3,08 2,97 2,83
15 25 SHC 3,61 3,54 3,44 3,33 3,19
27 6 3,99 3,91 3,82 3,62 3,34
29 SHC 4,17 4,05 3,85 3,62 3,34
31 SHC 4,17 4,05 3,85 3,62 3,34
TC 4,51 4,34 4,13 3,88 3,58
CM 1,32 1,42 1,52 1,68 1,82
21 SHC 2,50 2,43 2,33 2,22 2,08
23 SHC 2,87 2,79 2,70 2,58 2,45
17 25 SHC 3,26 3,17 3,07 2,96 2,81
27 SHC 3,63 3,53 3,43 3,32 3,19
29 SHC 4,02 3,90 3,81 3,69 3,55
31 SHC 4,39 4,27 4,13 3,88 3,58
TC 4,78 4,62 4,40 4,13 3,81
CM 1,39 1,46 1,57 1,72 1,87
21 SHC 2,09 2,03 1,93 1,82 1,68
23 SHC 2,46 2,40 2,31 2,19 2,06
19 25 SHC 2,82 2,76 2,67 2,56 2,42
27 SHC 3,19 3,14 3,04 2,93 2,79
29 SHC 3,54 3,50 3,41 3,30 3,16
31 SHC 3,91 3,87 3,78 3,66 3,53
TC 5,07 4,90 4,67 4,38 4,04
CM 1,42 1,50 1,62 1,77 1,92
23 SHC 2,07 2,00 1,90 1,79 1,65
21 25 SHC 2,42 2,36 2,28 2,16 2,03
27 SHC 2,79 2,74 2,64 2,53 2,39
29 SHC 3,14 3,10 3,01 2,90 2,76
31 SHC 3,51 3,47 3,38 3,27 3,14
TC 5,41 5,18 4,90 4,58 4,27
CM 1,45 1,54 1,66 1,81 1,97
23 25 SHC 2,03 1,94 1,84 1,72 1,61
27 SHC 2,38 2,31 2,20 2,09 1,97
29 SHC 2,73 2,68 2,57 2,46 2,34
31 SHC 3,12 3,05 2,94 2,82 2,72
TC: TOTAL COOLING CAPACITY kW
SHC: SENSIBLE HEAT CAPACITY kW
CM: COMPRESSOR INPUT kW
RATING CONDITIONS
OUTDOOR AMBIENT TEMPERATURE 35°C D.B.
INDOOR UNIT ENTERING AIR TEMP. 27°C D.B./19°C W.B.
14

INDOOR UNIT: MCA601R
OUTDOOR UNIT: GR601R
RATING CAPACITY 5,5 kW
AIR FLOW RATE 760 m³/h
EVAPORATOR CONDENSER
ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C
W.B. D.B. 25 30 35 40 43
TC 5,21 5,06 4,82 4,52 4,17
CM 1,81 1,93 2,08 2,28 2,48
21 SHC 3,57 3,50 3,38 3,24 3,07
23 SHC 4,05 3,97 3,85 3,71 3,54
15 25 SHC 4,51 4,42 4,30 4,16 3,99
27 6 4,99 4,89 4,77 4,52 4,17
29 SHC 5,21 5,06 4,82 4,52 4,17
31 SHC 5,21 5,06 4,82 4,52 4,17
TC 5,64 5,43 5,17 4,85 4,47
CM 1,85 1,99 2,13 2,35 2,55
21 SHC 3,13 3,04 2,92 2,77 2,59
23 SHC 3,59 3,49 3,37 3,23 3,06
17 25 SHC 4,07 3,96 3,84 3,69 3,52
27 SHC 4,54 4,41 4,29 4,15 3,98
29 SHC 5,02 4,88 4,76 4,62 4,44
31 SHC 5,49 5,33 5,17 4,85 4,47
TC 5,98 5,78 5,50 5,17 4,76
CM 1,95 2,05 2,20 2,41 2,62
21 SHC 2,62 2,53 2,42 2,27 2,10
23 SHC 3,08 3,00 2,88 2,74 2,57
19 25 SHC 3,53 3,46 3,34 3,20 3,03
27 SHC 3,98 3,92 3,80 3,66 3,49
29 SHC 4,42 4,38 4,26 4,13 3,95
31 SHC 4,89 4,84 4,72 4,58 4,41
TC 6,34 6,12 5,83 5,48 5,05
CM 1,99 2,11 2,27 2,48 2,70
23 SHC 2,59 2,50 2,38 2,24 2,07
21 25 SHC 3,03 2,95 2,85 2,70 2,53
27 SHC 3,49 3,42 3,30 3,17 2,99
29 SHC 3,93 3,87 3,77 3,62 3,46
31 SHC 4,39 4,34 4,22 4,09 3,92
TC 6,77 6,48 6,12 5,73 5,33
CM 2,03 2,16 2,32 2,54 2,76
23 25 SHC 2,54 2,43 2,30 2,15 2,01
27 SHC 2,97 2,88 2,75 2,61 2,46
29 SHC 3,42 3,35 3,22 3,07 2,93
31 SHC 3,90 3,81 3,67 3,53 3,40
TC: TOTAL COOLING CAPACITY kW
SHC: SENSIBLE HEAT CAPACITY kW
CM: COMPRESSOR INPUT kW
RATING CONDITIONS
OUTDOOR AMBIENT TEMPERATURE 35°C D.B.
INDOOR UNIT ENTERING AIR TEMP. 27°C D.B./19°C W.B.
15

5-4. Heating Capacity
Indoor Unit MCA451R MCA601R
Outdoor Unit GR451R GR601R
–5 0 5 710 15
Outdoor temperature (°C D.B.)
0
10
20
30
40
50
60
70
80
90
100
110
120
Heating capacity ratio (%)
NOTE
1) … Point of Rating condition
Black dot in the chart indicate the following rating condition.
Indoor : 20°C D.B.
Outdoor : 7°C D.B. / 6°C W.B.
2) Above characteristics indicate instantaneous operation, which does not take into
account defrost operation.
3) Fan speed : High
4) Because this air conditioner heats a room by drawing in the heat of the outside
air (heat pump system), the heating efficiency will fall off when the outdoor
temperature is very low. If sufficient heat cannot be obtained with this air
conditioner, use another heating appliance in conjunction with it.
–8
16

17
6. ELECTRICAL DATA
6-1. Electrical Characteristics
Indoor Unit MCA451R
Outdoor Unit GR451R
COOLING Indoor Unit Outdoor Unit Complete Unit
Fan Motor Fan Motor Compressor
Performance at 230 V Single phase 50 Hz
Rating Conditions Running Amps. A0.37 0.50 6.33 7.2
Power Input kW 0.070 0.093 1.407 1.57
Full Load Conditions Running Amps. A0.37 0.50 7.63 8.5
Power Input kW 0.070 0.093 1.727 1.89
Rating Conditions : Indoor Air Temperature 27°C D.B. / 19°C W.B.
Outdoor Air Temperature 35°C D.B.
Full Load Conditions : Indoor Air Temperature 32°C D.B. / 23°C W.B.
Outdoor Air Temperature 46°C D.B.
HEATING Indoor Unit Outdoor Unit Complete Unit
Fan Motor Fan Motor Compressor
Performance at 230 V Single phase 50 Hz
Rating Conditions Running Amps. A0.37 0.50 6.13 7.0
Power Input kW 0.070 0.093 1.337 1.50
Full Load Conditions Running Amps. A0.37 0.50 7.18 8.05
Power Input kW 0.070 0.093 1.637 1.8
Rating Conditions : Indoor Air Temperature 20°C D.B.
Outdoor Air Temperature 7°C D.B. / 6°C W.B.
Full Load Conditions : Indoor Air Temperature 27°C D.B.
Outdoor Air Temperature 24°CD.B. / 18°CW.B.
Rating Conditions : Indoor Air Temperature 20°C D.B.
Outdoor Air Temperature 7°C D.B. / 6°C W.B.
Full Load Conditions : Indoor Air Temperature 27°C D.B.
Outdoor Air Temperature 24°CD.B. / 18°CW.B.