euroline AWR508HL Operating manual

AWR509HL - AER509SH
AWR512HL - AER512SH
7(&+1,&$/6(59,&(0$18$/
63/,76<67(0$,5&21',7,21(5
0.8180.032.0 05/99
®
AWR508HL - AER507SH

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

Table of Contents
Page
1.OPERATING RANGE..............................................................................................................................1
2.SPECIFICATIONS
2-1.Unit Specifications..........................................................................................................................2
2-2.Major Component Specifications....................................................................................................5
2-3.Other Component Specifications.....................................................................................................11
3.DIMENSIONAL DATA..............................................................................................................................12
4.REFRIGERANT FLOW DIAGRAM .........................................................................................................15
5.PERFORMANCE DATA
5-1.Performance charts .......................................................................................................................17
5-2.Air Throw Distance Chart ..............................................................................................................20
5-3.Cooling Capacity ...........................................................................................................................23
6.ELECTRICAL DATA
6-1.Electrical Characteristics................................................................................................................27
6-2.Electric Wiring Diagrams................................................................................................................30
7.FUNCTION
7-1.Room Temperature Control ...........................................................................................................33
7-2.Dry Operation ................................................................................................................................35
7-3.Automatic Switching between Cooling and Heating.....................................................................35
8.TROUBLESHOOTING
8-1.Check before and after troubleshooting ........................................................................................41
8-2.Air conditioner does not operate ....................................................................................................42
8-3.Some part of air conditioner does not operate ..............................................................................46
8-4.Air conditioner operates, but abnormalities are observed ..............................................................48
8-5.If a sensor is defective ...................................................................................................................50
9.REFRIGERANT R407C: SPECIAL PRECAUTIONS WHEN SERVICING THE UNIT
9-1.Characteristics of new refrigerant R407C.......................................................................................51
9-2.Checklist before serving.................................................................................................................51
9-3.Tools specifically for R407C...........................................................................................................52
9-4.For tubing installation procedures..................................................................................................52
9-5.In case of compressor malfunction.................................................................................................53
9-6.In case refrigerant is leaking...........................................................................................................55
9-7.Charging additional refrigerant.......................................................................................................57
9-8.Retro-fitting existing systems..........................................................................................................57
10.CHECKING ELECTRICAL COMPONENTS
10-1.Measurement of Insulation Resistance..........................................................................................58
10-2.Checking Continuity of Fuse on PCB Ass'y....................................................................................59
10-3.Checking Motor Capacitor .............................................................................................................59
ii
5-4. Heating Capacity..............................................................................................................................26
7-4. Freeze Prevention............................................................................................................................36
7-5. Overload Prevention.........................................................................................................................37
7-6. Cold Draft Prevention........................................................................................................................38
7-7. Defrosting Operation.........................................................................................................................39

1
1. OPERATING RANGE
Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.
Cooling Maximum 32°C D.B. / 23°C W.B. 43°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 16°C D.B. – 8°C D.B. / – 9°C W.B.

2
2. SPECIFICATIONS
2-1. Unit Specifications
Indoor Unit AWR508HL
Outdoor Unit AER507SH
Power Source 220–240V ~ 50Hz
Voltage rating 230 V
Performance Cooling Heating
Capacity kW 2.20 2.55
BTU/h 7,500 8,700
Air circulation (High)
m3/h 430
Moisture removal (High) Liters/h 0.9 —
Electrical Rating Cooling Heating
Available voltage range V198 ~ 264
Running amperes A 3.7 3.6
Power input W 820 790
Power factor % 96 95
C.O.P. W/W 2.7 3.2
Compressor locked rotor amperes A 19 19
Features
Controls / Temperature control Microprocessor / I.C. thermostat
Control unit Wireless remote control unit
Timer ON/OFF 24 hours & Daily program,1-hour OFF
Fan speeds Indoor / Outdoor 3 and Auto / 1(Hi)
Airflow direction (Indoor) Horizontal Manual
Vertical Auto
Air filter Washable, Anti-Mold
Compressor Rotary (Hermetic)
Refrigerant / Amount charged at shipment g R407C/ 840
Refrigerant control Capillary tube
Operation sound Indoor : Hi / Me / Lo dB-A 37 / 31 / 29
Outdoor : Hi dB-A 43
Refrigerant tubing connections Flare type
Max. allowable tubing length at shipment m 7.5
Refrigerant Narrow tube mm (in.) 6.35(1/4)
tube diameter Wide tube mm(in.) 9.52(3/8)
Refrigerant tube kit / Accessories Optional / Air Clean Filter
Dimensions & Weight Indoor Unit Outdoor Unit
Unit dimensions Height mm 270 525
Width mm 805 790
Depth mm 177 220
Package dimensions Height mm 243 585
Width mm 855 865
Depth mm 332 320
Weight Net kg 8.0 33.0
Shipping kg 10.0 36.0
Shipping volume
m30.07 0.16
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.

3
Indoor Unit AWR509HL
Outdoor Unit AER509SH
Power Source 220–240V ~ 50Hz
Voltage rating 220/230/240 V
Performance Cooling Heating
Capacity kW 2.65 /2.65 /2.70 3.20 /3.20 /3.25
BTU/h 9,000 /9,000 /9,200 10,900/10,900/11,100
Air circulation (High) m3/h 470
Moisture removal (High) Liters/h 1.1 —
Electrical Rating Cooling Heating
Available voltage range V198 ~ 264
Running amperes A4.6 /4.5 /4.5 4.2 /4.2 /4.2
Power input W990 /1,010 /1,030 910/930 /960
Power factor %98 /98 /95 98 /96 /95
C.O.P. W/W 2.7 /2.6 /2.6 3.5 /3.4 /3.4
Compressor locked rotor amperes A22 /23 /24 22 /23 /24
Features
Controls / Temperature control Microprocessor / I.C. thermostat
Control unit Wireless remote control unit
Timer ON/OFF 24 hours & Daily program,1-hour OFF
Fan speeds Indoor / Outdoor 3 and Auto /1(Hi)
Airflow direction (Indoor) Horizontal Manual
Vertical Auto
Air filter Washable, Anti-Mold
Compressor Rotary (Hermetic)
Refrigerant / Amount charged at shipment gR407C /850
Refrigerant control Capillary tube
Operation sound Indoor : Hi / Me / Lo dB-A 38 / 33 / 31
Outdoor : Hi dB-A 46
Refrigerant tubing connections Flare type
Max. allowable tubing length at shipment m7.5
Refrigerant Narrow tube mm(in.) 6.35(1/4)
tube diameter Wide tube mm(in.) 9.52(3/8)
Refrigerant tube kit / Accessories Optional / Air Clean Filter
Dimensions & Weight Indoor Unit Outdoor Unit
Unit dimensions Height mm 270 525
Width mm 805 790
Depth mm 177 220
Package dimensions Height mm 243 585
Width mm 855 865
Depth mm 332 320
Weight Net kg 8.0 34.0
Shipping kg 10.0 37.0
Shipping volume m30.07 0.16
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.

4
Indoor Unit AWR512HL
Outdoor Unit AER512SH
Power Source 220–240V ~ 50Hz
Voltage rating 220/230/240 V
Performance Cooling Heating
Capacity kW 3.30 /3.35 /3.35 3.90 /3.90 /4.00
BTU/h 11,300/11,400/11,400 13,300/13,300/13,600
Air circulation (High) m3/h 490
Moisture removal (High) Liters/h 1.5 —
Electrical Rating Cooling Heating
Available voltage range V198 ~ 264
Running amperes A6.2 /6.2 /6.3 6.3 /6.3 /6.4
Power input W1,310 /1,330 /1,370 1,330 /1,350 /1,400
Power factor %96 /93 /91 96 /93 /91
C.O.P. W/W 2.5 /2.5 /2.4 2.9 /2.9 /2.9
Compressor locked rotor amperes A32 /33 /35 32 /33 /35
Features
Controls / Temperature control Microprocessor / I.C. thermostat
Control unit Wireless remote control unit
Timer ON/OFF 24 hours & Daily program,1-hour OFF
Fan speeds Indoor / Outdoor 3 and Auto /1(Hi)
Airflow direction (Indoor) Horizontal Manual
Vertical Auto
Air filter Washable, Anti-Mold
Compressor Rotary (Hermetic)
Refrigerant / Amount charged at shipment gR407C /1,230
Refrigerant control Capillary tube
Operation sound Indoor : Hi / Me / Lo dB-A 39 / 35 / 33
Outdoor : Hi dB-A 48
Refrigerant tubing connections Flare type
Max. allowable tubing length at shipment m7.5
Refrigerant Narrow tube mm(in.) 6.35(1/4)
tube diameter Wide tube mm(in.) 12.7(1/2)
Refrigerant tube kit / Accessories Optional / Air Clean Filter
Dimensions & Weight Indoor Unit Outdoor Unit
Unit dimensions Height mm 270 530
Width mm 805 750
Depth mm 177 270
Package dimensions Height mm 243 593
Width mm 855 895
Depth mm 332 348
Weight Net kg 8.0 40.0
Shipping kg 10.0 43.0
Shipping volume m30.07 0.18
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.

5
2-2. Major Component Specifications
2-2-1. Indoor Unit
Indoor Unit AWR508HL
Controller PCB
Part No. POW-K98EH(A),POW-K8EH(B)
Controls Microprocessor
Control circuit fuse 250 V 3.15 A
Remote Control Unit RCS-8HPS3E
Fan & Fan Motor
Type Cross-flow
Q'ty ... Dia. and length mm 1 ... ø95 / L617
Fan motor model ... Q'ty KFV4Q-11H5P ... 1
No. of poles ... rpm (230 V, High) 4 ... 1,130
Nominal output W 10
Coil resistance (Ambient temp. 20°C) ΩBRN-WHT: 561.8
VLT-WHT: 197.4
VLT-ORG : 63.4
YEL-ORG : 155.7
YEL-PNK : 115.9
Safety devices Type Internal fuse
Operating temp. Open °C 145±2
Close —
Run capacitor µF 0.6
VAC 440
Flap Motor
Type Stepping motor
Model MP24GA1
Rating DC12V
Coil resistance (Ambient temp. 25°C) W WHT – BLU (respectively 4 wires) : 380 ±7%
Heat Exch. Coil
Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 1.4
Face area
m20.130
DATA SUBJECT TO CHANGE WITHOUT NOTICE.

6
Indoor Unit AWR509HL
Controller PCB
Part No. POW-K98EH(A), POW-K8EH(B)
Controls Microprocessor
Control circuit fuse 250 V 3.15 A
Remote Control Unit RCS-8HPS3E
Fan & Fan Motor
Type Cross-flow
Q'ty ... Dia. and length mm 1 ... ø95 / L617
Fan motor model ... Q'ty KFV4Q-11H5P-S ... 1
No. of poles ... rpm (230 V, High) 4 ...1,190
Nominal output W10
Coil resistance (Ambient temp. 20°C) ΩBRN-WHT :561.8
VLT-WHT :197.4
VLT-ORG :63.4
YEL-ORG :155.7
YEL-PNK :115.9
Safety devices Type Internal fuse
Operating temp. Open °C145±2
Close —
Run capacitor µF 0.8
VAC 440
Flap Motor
Type Stepping motor
Model MP24GA1
Rating DC 12 V
Coil resistance (Ambient temp. 25°C) WWHT – BLU (respectively 4 wires) : 380 ±7%
Heat Exch. Coil
Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 1.4
Face area m20.130
DATA SUBJECT TO CHANGE WITHOUT NOTICE.

7
Indoor Unit AWR512HL
Controller PCB
Part No. POW-K78EH(A), POW-K8EH(B)
Controls Microprocessor
Control circuit fuse 250 V 3.15 A
Remote Control Unit RCS-8HPS3E
Fan & Fan Motor
Type Cross-flow
Q'ty ... Dia. and length mm 1 ... ø95 / L617
Fan motor model ... Q'ty KFV4Q-11H5P-S ... 1
No. of poles ... rpm (230 V, High) 4 ...1,230
Nominal output W10
Coil resistance (Ambient temp. 20°C) ΩBRN-WHT :561.8
VLT-WHT :197.4
VLT-ORG :63.4
YEL-ORG :155.7
YEL-PNK :115.9
Safety devices Type Internal fuse
Operating temp. Open °C145±2
Close —
Run capacitor µF 1.0
VAC 440
Flap Motor
Type Stepping motor
Model MP24GA1
Rating DC 12 V
Coil resistance (Ambient temp. 25°C) WWHT – BLU (respectively 4 wires) : 380 ±7%
Heat Exch. Coil
Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 1.4
Face area m20.130
DATA SUBJECT TO CHANGE WITHOUT NOTICE.

8
2-2-2. Outdoor Unit
Outdoor Unit AER507SH
Controller PCB POW-C96GH
Compressor
Type Rotary (Hermetic)
Compressor model C-RN75H5B 80225235
Nominal output W 750
Compressor oil ... Amount cc FV68S ... 500
Coil resistance (Ambient temp. 25°C) ΩC–R: 3.38
C–S : 7.49
Safety devices Type External(OLR A) External(OLR T)
Overload relay MST38APU-9201 CS-7C115
Operating temp. Open °C 135±5 115±3
Close °C 69±11 95±5
Operating amp.(Ambient temp. 25°C) Trip in 6 to 16 sec. at 14A —
Run capacitor µF 17.5
VAC 400
Crank case heater —
Fan & Fan Motor
Type Propeller
Q'ty ... Dia. 1 ... ø400
Fan motor model ... Q'ty K35610-M01388 ... 1
No. of poles ... rpm (230 V, High) 6 ... 680
Nominal output W 20
Coil resistance (Ambient temp. 20°C) ΩBRN-WHT: 358±7%
PNK-WHT: 510±7%
——
Safety devices Type Internal protector
Operating temp. Open °C 150±10
Close °C Automatic reclosing
Run capacitor µF 1.5
VAC 440
Heat Exch. Coil
Coil Aluminum plate fin / Copper tube
Rows 1
Fin pitch mm 1.4
Face area
m20.377
External Finish Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.

9
Outdoor Unit AER509SH
Controller PCB POW-C96GH
Compressor
Type Rotary (Hermetic)
Compressor model C-RN90H5A80228335
Nominal output W900
Compressor oil ... Amount cc FV68S ...500
Coil resistance (Ambient temp. 25°C) ΩC–R :3.07
C–S :7.97
Safety devices Type External(OLR A) External(OLR T)
Overload relay MRA99057-9201 CS-7C115
Operating temp. Open °C145±5115±3
Close °C69±11 95±5
Operating amp.(Ambient temp. 25°C)Trip in 6 to 16 sec. at 18A —
Run capacitor µF 22.5
VAC 400
Crank case heater —
Fan & Fan Motor
Type Propeller
Q'ty ... Dia. 1 ... ø400
Fan motor model ... Q'ty K35610-M01388 ... 1
No. of poles ... rpm (230 V, High) 6 ...680
Nominal output W20
Coil resistance (Ambient temp. 20°C) ΩBRN-WHT :358±7%
PNK-WHT :510±7%
——
Safety devices Type Internal protector
Operating temp. Open °C150±10
Close °CAutomatic reclosing
Run capacitor µF 1.5
VAC 440
Heat Exch. Coil
Coil Aluminum plate fin / Copper tube
Rows 1
Fin pitch mm 1.4
Face area m20.377
External Finish Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.

10
Outdoor Unit AER512SH
Controller PCB POW-C96GH
Compressor
Type Rotary (Hermetic)
Compressor model C-RN110H5B80235645
Nominal output W1,100
Compressor oil ... Amount cc FV68S ...550
Coil resistance (Ambient temp. 25°C) ΩC–R :1.962
C–S :5.38
Safety devices Type External(OLR A) External(OLR T)
Overload relay MRA98596-9201 CS-7C115
Operating temp. Open °C145±5115±3
Close °C69±11 95±5
Operating amp.(Ambient temp. 25°C) Trip in 6 to 16 sec. at 21A —
Run capacitor µF 25.0
VAC 400
Crank case heater —
Fan & Fan Motor
Type Propeller
Q'ty ... Dia. 1 ... ø400
Fan motor model ... Q'ty K35610-M01402 ... 1
No. of poles ... rpm (230 V, High) 6 ...760
Nominal output W20
Coil resistance (Ambient temp. 20°C) ΩBRN-WHT :256±7%
YEL-WHT :227±7%
PNK-YEL :103±7%
Safety devices Type Internal protector
Operating temp. Open °C150±10
Close °CAutomatic reclosing
Run capacitor µF 2.0
VAC 440
Heat Exch. Coil
Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 1.6
Face area m20.301
External Finish Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.

11
<Only for 9,000BTU/h class models>
<Only for 12,000BTU/h class models>
<Only for 12,000BTU/h class models>
PTC Thermistor (TH) TDK 101YV
Resistance Ω(at 25°C) 100 ±20%
4-way Valve (Solenoid coil) LB60012 (Coil), V26-110B (Valve)
Coil rating AC 220/240V, 50Hz, 6W
Coil resistance Ω(at 20°C) 1,740 ±7%
4-way Valve (SC) LB60012 (Coil), VH7100C (Valve)
Coil rating AC 220/240V, 50Hz, 6W
Coil resistance Ω(at 20°C) 1,740 ±7%
Thermostat (Defrost thermo. 23D) TRS02-12MSR
Operating temp. °C ON 12 ±2
Diff. 8 deg. below
Power Relay (PR) DFU24D1-F (M)
Coil rating DC 24V
Coil resistance Ω(at 20°C) 650 ±10%
Contact rating AC 250V, 20A
Outdoor Unit AER507SH - AER509SH
AER512SH
Thermistor (Room sensor) DTN-TKS134B
Resistance kΩ25°C 5.0 ±3%
Thermistor (Coil sensor) DTN-TKS131B
Resistance kΩ0°C 15.0 ±2%
Transformer (TR) ATR-J105
Rating Primary AC 230V, 50/60Hz
Secondary 19V, 0.526A
Capacity 10VA
Coil resistance Ω(at 21°C) Primary (WHT – WHT): 205 ±10%
Secondary (BRN – BRN): 2.0 ±10%
Thermal cut-off temp. 150°C
Indoor Unit AWR508HL - AWR509HL
AWR512HL
(SC)
2-3. Other Component Specifications

12
3.DIMENSIONAL DATA
Indoor Unit AWR508HL - AWR509HL
AWR512HL
58.599.5
805 177
41.0 41.0 270
Narrow tube ø6.35 (1/4")
Wide tube ø9.52 (3/8") AWR508-509
Wide tube ø12.7 (1/2") AWR512
Center of tubing
hole (2 places)
Drain hose ø18
Remote control unit
18.5
61
172.5
Unit : mm

13
Outdoor Unit AER507SH - AER509SH
Air discharge
Air intake
96608
247 225
4 – ø12 holes
Narrow tube service valve
ø6.35 (1/4")
84 57
Wide tube service valve
ø9.52 (3/8")
220
*
380
790 24
525
17
4 – ø3.1 holes
336
380
<Location of Service Valve>
Service valves are located behind the side panel.
See the illustration below (*).
NOTE
Unit : mm

14
Outdoor Unit AER512SH
276
4 – ø12 holes
312
Air intake
Air discharge
608 60
530 38088
17
750
380 273
4 – ø3.3 holes
270
6193
Wide tube service valve
ø12.7 (1/2")
Narrow tube service valve
ø6.35 (1/4")
Unit : mm

15
Indoor Unit AWR508HL - AWR509HL Outdoor Unit AER507SH - AER509SH
Compressor
4-way
valve
Accumulator
Wide tube
service
valveWide tube
O.D.
ø9.52 mm
(3/8 ")
Narrow
tube
service
valveNarrow tube
O.D.
ø6.35 mm
(1/4")
Heat exchanger
Heat exchanger
Muffler
Capillary tube
Capillary tube
Cooling cycle
Heating cycle
Strainer
Indoor unit Outdoor unit
Check
valve
Strainer
Indoor Unit AWR512HL Outdoor Unit AER512SH
Compressor
4-way
valve
Accumulator
Wide tube
service
valveWide tube
O.D.
ø12.7 mm
(1/2 ")
Narrow
tube
service
valveNarrow tube
O.D.
ø6.35 mm
(1/4")
Heat exchanger
Heat exchanger
Muffler
Capillary tube
Capillary tube
Cooling cycle
Heating cycle
Strainer
Indoor unit Outdoor unit
StrainerCheck
valve
4. REFRIGERANT FLOW DIAGRAM

16
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

5. PERFORMANCE DATA
5-1. Performance charts
17
Indoor inlet air
D.B. temp. (°C)
■ Cooling Characteristics ■ Heating Characteristics
Indoor inlet air
D.B. temp. (°C)
9
8
7
6
5
4
3
2
125 30 35 40 45 50
Outdoor inlet air D.B. temp. (°C)
Operating current (A)
10 Indoor inlet air
D.B. temp. (°C)
8
7
6
5
4
3
2
1–5 0 5 10 15 20
Outdoor inlet air D.B. temp. (°C)
Operating current (A)
25
9
10
Indoor inlet air
D.B. temp. (°C)
32
27
21
32
27
21
27
20
15
27
20
15
27
20
15
27
20
15
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 service valve MPa (kgf/cm2G)
1.87 (18)
1.67 (16)
1.47 (14)
25
7
1.28 (12)
1.08 (10)
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 service valve MPa (kgf/cm2G)
0.59 ( 5 )
0.49 ( 4 )
0.39 ( 3 )
Overload prevention operates to protect the air conditioner when outdoor ambient temperature becomes 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
Indoor Unit AWR508HL
Outdoor Unit AER507SH