Electra LEX 7, ONG 7, LEX 9, ONG 9, LEX 12 Service Manual

Service Manual

LEX Series

REFRIGERANT

R410A

COOLING ONLY
HEAT PUMP

JANUARY - 2006

Indoor Units Outdoor Units

LEX 7 ONG 7
LEX 9 ONG 9
LEX 12 ONG 12
LEX 14 ONG 14

A

LIST OF EFFECTIVE PAGES

Revision Y06-01

Service Manual - LEX

LIST OF EFFECTIVE PAGES

Note: Changes in the pages are indicated by a “Revision#” in the footer of each effected page

(when none indicates no changes in the relevant page). All pages in the following list represent
effected/ non effected pages divided by chapters.

Dates of issue for original and changed pages are:

Original ....... 0 ........ January 2006

Total number of pages in this publication is 92 consisting of the following:

Page
No.

Revision
No. #

Page
No.

Revision
No. #

Page
No.

Revision
No. #

Title ....................... 0

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14-1 – 14-15 ......... 0

15-1 – 15-3 ........... 0

Appendix -A ...........0

• Zero in this column indicates an original page.

*Due to constant improvements please note that the data on this service manual can be modified with out notice.
**Photos are not contractual.

i

TABLE OF CONTENTS

Revision Y06-01Service Manual - LEX

Table of Contents

1. INTRODUCTION ...................................................................................................1-1

2. PRODUCT DATA SHEET ......................................................................................2-1

3. RATING CONDITIONS ..........................................................................................3-1

4. OUTLINE DIMENSIONS .......................................................................................4-1

5. PERFORMANCE DATA & PRESSURE CURVES ................................................5-1

6. SOUND LEVEL CHARACTERISTICS ..................................................................6-1

7. ELECTRICAL DATA ..............................................................................................7-1

8. WIRING DIAGRAMS .............................................................................................8-1

9. ELECTRICAL CONNECTIONS .............................................................................9-1

10. REFRIGERATION DIAGRAMS .............................................................................10-1

11. TUBING CONNECTIONS ......................................................................................11-1

12. CONTROL SYSTEM .............................................................................................12-1

13. TROUBLESHOOTING ..........................................................................................13-1

14. EXPLODED VIEWS AND SPARE PARTS LISTS .................................................14-1

15. OPTIONAL ACCESSORIES .................................................................................15-1

16. APPENDIX A .........................................................................................................16-1

1-1

INTRODUCTION

Revision Y06-01

Service Manual - LEX

1. INTRODUCTION

1.1 General

The new LEX split wall mounted range comprise the ST (cooling only) and RC (heat
pump) models, as follows:

• Cooling Only LEX 7ST, LEX 9ST, LEX 12ST, LEX 14ST.

• Heat Pump LEX 7RC, LEX 9RC, LEX 12RC, LEX 14RC.

The indoor LEX units are available as LED display types, featuring esthetic design,
compact dimensions, and low noise operation.

Display type models availability:

• LED Type LEX7, LEX9, LEX12, LEX14.

1.2 Main Features

The LEX series benefits from the most advanced technological innovations, namely:

• R410A models

• Microprocessor control.

• Infrared remote control with liquid crystal display.

• Supports Indoor Air Quality features, such as – Ionizer, Active Electro-Static Filter,

and Fresh Air.

• Indoor large diameter cross flow fan, allowing low noise level operation.

• Bended indoor coil with treated aluminum fins and coating for improved efficiency.

• High COP.

• Easy access to the interconnecting tubing and wiring connections, so that

removing the front grill or casing is not necessary.

• Refrigerant pipes can be connected to the indoor unit from 5 different optional

directions.

• Automatic treated air sweep.

• Low indoor and outdoor noise levels.

• Easy installation and service.

1-2

INTRODUCTION

Revision Y06-01

Service Manual - LEX

1.3 Indoor Unit

The indoor unit is wall mounted, and can be easily fitted to many types of residential
and commercials applications.

It includes:

• Casing with air inlet and outlet grills.

• A large-diameter tangential fan.

• Bended coil with treated aluminum fins.

• Advanced electronic control box assembly

• Interconnecting wiring terminal block

• Mounting plate

1.4 Filtration

The LEX series presents several types of air filters:

• Easily accessible, and re-usable pre-filters (mesh)

• Pre-charged electrostatic filter (disposable)

• Active carbon filter (disposable)

• ESF. Active Electro Static re-usable filter (optional)

1.5 Ionizer (Optional)

A special design Ionizer protected by unique patents integrated into the indoor unit,
generating negative ions to the room providing comfort and upgraded indoor air quality.

1.6 Control

The microprocessor indoor controller, and an infrared remote control, supplied as
standard, provide complete operating function and programming. For further details
please refer to the Remote Control Manual, Appendix A.

1-3

INTRODUCTION

Revision Y06-01

Service Manual - LEX

1.7 Outdoor Unit

The LEX outdoor units can be installed as floor or wall mounted units by using a wall
supporting bracket. The metal sheets are protected by anti- corrosion paint work
allowing long life resistance. All outdoor units are pre-charged. For further information
please refer to the Product Data Sheet, Chapter 2.

It includes :

• Axial fan.

• Outdoor coil with hydrophilic louver fins for RC units.

• Outlet air fan grill.

• Service valves” flare” type connection.

• Interconnecting wiring terminal block.

• Fresh air motor for LEX 7-14 (optional).

1.8 Tubing Connections

Flare type interconnecting tubing to be produced on site.
For further details please refer to the Installation Manual, APPENDIX A.S

1.9 Accessories

ASK (All Season Kit):

For low ambient working conditions in cooling, an ASK can be installed inside the
outdoor unit. This kit allows cooling operation down to outdoor temp of -10 ºC by
gradually controlling the outdoor fan speed motor.

RCW Wall Mounted Remote Control

The RCW remote control is mounted on the wall, and controls the unit either as an
infrared remote control or as a wired controller. The wired controller can control up to
10 Indoor units with the same program settings and adjustments.
For further details please refer to Optional Accessories, Chapter 18.

1.10 Inbox Documentation

Each unit is supplied with its own installation, operation and remote control manuals.

1-4

INTRODUCTION

Revision Y06-01

Service Manual - LEX

1.11 Matching Table

1.11.1 R410A

OUTDOOR UNITS

INDOOR UNITS

MODEL REFRIGER. LEX7 LEX9 LEX12 LEX14 K9 K11 K15 PXD9 PXD12 PXD15

ONG7 ST R410A √

ONG9 ST R410A √ √ √

ONG12 ST R410A √ √ √

ONG14 ST R410A √ √ √

ONG7 RC R410A √

ONG9 RC R410A √ √ √*

ONG12 RC R410A √ √

ONG14 RC R410A √* √

√* - The outdoor unit of this combination cannot be matched to other indoor units.
The above table lists outdoor units and LEX indoor units which can be matched together. In addition the

listed outdoor units can be matched with other types of indoor units such as cassettes, floor/ceiling.
For further information please refer to the relevant Service Manual.

2-1

PRODUCT DATA SHEET

Revision Y06-01

Service Manual - LEX

2. PRODUCT DATA SHEET

2.1 LEX 7 R410A Specification

Units Cooling Only

Btu/hr 7230

kW 2.12
kW 0.63

W/W 3.37

A

V/Ph/Hz

A2.8
A
A

H/M/L RPM
H/M/L m3/hr

Min-Max Pa

H/M/L dB(A)
H/M/L dB(A)

l/hr
mm

WxHxD mm

kg

WxHxD mm

kg
units
units

H/L RPM
H/L m3/hr
H/L dB(A) 60
H/L dB(A) 48

WxHxD mm

kg 31

WxHxD mm

kg 35
Units
units

kg/m 0.8kg/7.5m

4mL10m:+0g

10mL15m:+75g
In.(mm)
In.(mm)

m.
m.

kW

(1)Airflow in ducted units;at nominal external static pressure.
(2)Sound power in ducted units is measured at air discharge.
(3)Sound pressure level measured at 1-meter distance from unit.
(4)Rating conditions in accordance to ISO 5151 and ISO 13253 (for ducted units).

Refrigerant chargless distance 0.85kg/7.5m

4mL10m:+0g

10mL15m:+75g

3/8"(9.53)

Max.15

Max.7

Liquid line
Suction line
Max.tubing length

220-240V/Single/50Hz

15

10

Crossflow x 1

2.72.8

LEX-7

ONG-7

Flared

3.65

HeatingCooling

INDOOR

Connections

between units

OUTDOOR

Capacity

(4)

Power input

(4)

Air flow

Fan speeds

Fan type & quantity

Compressor type,model

Refrigerant control

A

7400

2.12 2.17

0.63 0.595

A

3.37

7230

9

945x395x655

45/41/39
30/27/25

0.7
16

810x210x285

48

795x290x610

11

60

0

380/320/280

860/760/660

870x285x355

13.5
36

680

Package dimensions

32

1/4"(6.35)

9 levels

3 levels

R410A

Capillary tube (with 026 restrictor)

Propeller(direct) x 1

Rotary,Toshiba PA82X1C-4DZDE

1660

Refrigerant type

Model Indoor Unit
Model Outdoor Unit
Installation Method of Pipe

Dimensions

Sound pressure level

(3)

Characteristics

EER (Cooling) or COP(Heating)

(4)

Weight

Condenstate drain tube I.D

Additional charge

Stacking height

Units per pallet

Packaged weight

Package dimensions

Sound power level

Stacking height

Units per pallet

Packaged weight

Weight

Fan type & quantity

Sound pressure level

(3)

Moisture removal

Air flow

(1)

Fan speeds

36

Power supply

Energy efficiency class

Sound power level

(2)

External static pressure

Circuit breaker rating

Starting current

Rated current

Dimensions

Heating elements (Option)
Others

Max.height difference

Remote control

0.3

Operation control type

2-2

PRODUCT DATA SHEET

Revision Y06-01 Service Manual - LEX

2.2 LEX 9 R410A Specification

Units Cooling Only

Btu/hr 9280

kW 2.72
kW 0.825

W/W 3.30

A

V/Ph/Hz

A3.7
A
A

H/M/L RPM
H/M/L m3/hr

Min-Max Pa

H/M/L dB(A)
H/M/L dB(A)

l/hr
mm

WxHxD mm

kg

WxHxD mm

kg
units
units

H/L RPM
H/L m3/hr
H/L dB(A) 61
H/L dB(A) 51

WxHxD mm

kg 34

WxHxD mm

kg 38
Units
units

kg(7.5mm)

In.(mm)
In.(mm)

m.

m.

kW

(1)Airflow in ducted units;at nominal external static pressure.
(2)Sound power in ducted units is measured at air discharge.
(3)Sound pressure level measured at 1-meter distance from unit.
(4)Rating conditions in accordance to ISO 5151 and ISO 13253 (for ducted units).

53

795x290x610

35

4mL10m: +0g; 10m L15m: +100g

13.5
36

1780

62

220-240V/Single/50Hz

18.7

10

Crossflow x 1

3.83.7

LEX-9

ONG-9

Flared

3.42

HeatingCooling

INDOOR

Connections

between units

OUTDOOR

Capacity

(4)

Power input

(4)

Air flow

Fan speeds

Fan type & quantity

Compressor type,model

Refrigerant control

B

9890

2.72 2.90

0.825 0.849

A

3.30

9280

960/860/760

9

945x395x655

49/46/44
35/31/28

0.9
16

810x210x285

11

870x285x355

1/4"(6.35)

9 levels

3 levels

R410A

Capillary tube (with 029 restrictor)

Propeller(direct) x 1

Rotary,Hitachi ASG108CV-B7AT

780

39

1.03

3/8"(9.53)

Max.15

Max.7

Model Indoor Unit
Model Outdoor Unit
Installation Method of Pipe

Dimensions

Sound pressure level

(3)

Package dimensions

Sound power level

Remote control

0.3

Characteristics

EER (Cooling) or COP(Heating)

(4)

Operation control type

Stacking height

Units per pallet

Packaged weight

Weight

Heating elements (Option)
Others

Refrigerant type

Liquid line
Suction line
Max.tubing length
Max.height difference

Refrigerant charge(stabdard connecting tubing length)
Additional charge

Stacking height

Units per pallet

Packaged weight

Weight

Dimensions

Condenstate drain tube I.D

Package dimensions

Fan type & quantity

Sound pressure level

(3)

Moisture removal

Air flow

(1)

Fan speeds

Power supply

Energy efficiency class

Sound power level

(2)

External static pressure

Circuit breaker rating

Starting current

Rated current

0

450/380/330

2-3

PRODUCT DATA SHEET

Revision Y06-01

Service Manual - LEX

2.3 LEX 12 R410A Specification

Units Cooling Only

Btu/hr 12210

kW 3.58
kW 1.112

W/W 3.22

A

V/Ph/Hz

A5.0
A
A

H/M/L RPM
H/M/L m3/hr

Min-Max Pa

H/M/L dB(A)
H/M/L dB(A)

l/hr
mm

WxHxD mm

kg

WxHxD mm

kg
units
units

H/L RPM
H/L m3/hr
H/L dB(A) 61
H/L dB(A) 51

WxHxD mm

kg 35

WxHxD mm

kg 39
Units
units

kg(7.5mm)

In.(mm)
In.(mm)

m.
m.

kW

(1)Airflow in ducted units;at nominal external static pressure.
(2)Sound power in ducted units is measured at air discharge.
(3)Sound pressure level measured at 1-meter distance from unit.
(4)Rating conditions in accordance to ISO 5151 and ISO 13253 (for ducted units).

61
51

795x290x610

36

11.5

870x285x355

14
36

220-240V/Single/50Hz

25

15

Crossflow x 1

5.25.0

LEX-12

ONG-12

Flared

3.62

HeatingCooling

Fan speeds

Fan type & quantity

Compressor type,model

Refrigerant control

A

14160

3.58 4.15

1.112 1.145

A

3.22

12210

0

635/550/450

1230/1080/930

9

945x395x655

55/53/49
43/39/35

1.3
16

810x210x285

1/4"(6.35)

9 levels

3 levels

R410A

Capillary tube

Propeller(direct) x 1

Rotary,RN 145 VHSMT

1850

1.13

4mL10m: +0g; 10m L15m: +50g

Model Indoor Unit
Model Outdoor Unit
Installation Method of Pipe

Dimensions

Sound pressure level

(3)

Sound power level

INDOOR OUTDOOR

Capacity

(4)

Power input

(4)

Characteristics

EER (Cooling) or COP(Heating)

(4)

Operation control type

Stacking height

Units per pallet

Packaged weight

Weight
Package dimensions

Connections

between units

Air flow

Heating elements (Option)
Others

Refrigerant type

Liquid line
Suction line
Max.tubing length
Max.height difference

Refrigerant charge(stabdard connecting tubing length)
Additional charge

Stacking height

Units per pallet

Packaged weight

Weight

Rated current

Dimensions

Condenstate drain tube I.D

Package dimensions

Fan type & quantity

Sound pressure level

(3)

Moisture removal

Air flow

(1)

Fan speeds

810

40

Power supply

Energy efficiency class

Sound power level

(2)

External static pressure

Circuit breaker rating

Starting current

3/8"(9.53)

Max.15

Max.7

Remote control

0.3

2-4

PRODUCT DATA SHEET

Revision Y06-01 Service Manual - LEX

2.4 LEX 14 R410A Specification

Units Cooling Only

Btu/hr 14400

kW 4.22
kW 1.31

W/W 3.22

A

V/Ph/Hz

A5.9
A
A

H/M/L RPM
H/M/L m3/hr

Min-Max Pa

H/M/L dB(A)
H/M/L dB(A)

l/hr
mm

WxHxD mm

kg

WxHxD mm

kg
units
units

H/L RPM
H/L m3/hr
H/L dB(A) 63
H/L dB(A) 53

WxHxD mm

kg 41.5

WxHxD mm

kg 45.5
Units
units

kg/m

In.(mm)
In.(mm)

m.

m.

kW

(1)Airflow in ducted units;at nominal external static pressure.
(2)Sound power in ducted units is measured at air discharge.
(3)Sound pressure level measured at 1-meter distance from unit.
(4)Rating conditions in accordance to ISO 5151 and ISO 13253 (for ducted units).

0.3

1/2"(12.7)

Max.15

Rated current

0

Remote control

Package dimensions

Weight

Power supply

Energy efficiency class

Sound power level

(2)

External static pressure

Circuit breaker rating

Starting current

Fan speeds

660/550/475

Dimensions

Condenstate drain tube I.D

Air flow

(1)

1280/1080/930

Others

Refrigerant type

Liquid line
Suction line
Max.tubing length
Max.height difference

Refrigerant chargless distance
Additional charge

Operation control type

Units per pallet

Packaged weight

Connections

between units

Heating elements (Option)

42.2

1/4"(6.35)

Characteristics

EER (Cooling) or COP(Heating)

(4)

Weight

INDOOR

Fan type & quantity

Sound pressure level

(3)

Moisture removal

Stacking height

46.5

Max.7

Model Indoor Unit
Model Outdoor Unit
Installation Method of Pipe

Dimensions

Sound pressure level

(3)

Package dimensions

Sound power level

OUTDOOR

Rotary,Sanyo C-RV168H1AB

920

53

795x290x610

9

945x395x655

56/51/46
46/41/36

1.5
16

810x210x285

11.5

870x285x355

Propeller(direct) x 1

C

15010

4.22 4.40

1.31 1.310

A

3.22

14400

Capacity

(4)

Power input

(4)

Air flow

Fan speeds

Fan type & quantity

Compressor type,model

Refrigerant control

Stacking height

Units per pallet

Packaged weight

LEX-14

ONG-14

Flared

3.36

HeatingCooling

220-240V/Single/50Hz

30

15

Crossflow x 1

5.95.9

1.38kg/7.5m

4mL10m: +0g 10m L15m: +120g

14
36

2160

63

9 levels

3 levels

R410A

Capillary tube

3-1

RATING CONDITIONS

Revision Y06-01

Service Manual - LEX

3. RATING CONDITIONS

Standard conditions in accordance with ISO 5151, ISO 13253 (for ducted units)
and EN 14511.

Cooling:

Indoor: 27oC DB 19oC WB
Outdoor: 35 oC DB

Heating:

Indoor: 20oC DB
Outdoor: 7oC DB 6oC WB

3.1 Operating Limits

3.1.1 R410A

Indoor Outdoor

Cooling

Upper limit 32

o

C DB 23oC WB 46oC DB

Lower limit 21

o

C DB 15oC WB 10oC DB

Heating

Upper limit 27

o

C DB 24oC DB 18oC WB

Lower limit 10

o

C DB -9oC DB -10oC WB

Voltage 1PH 198 ÷ 264 V

4-1

OUTLINE DIMENSIONS

Revision Y06-01Service Manual - LEX

4. OUTLINE DIMENSIONS

4.1 LEX 7, 9, 12, 14 / ONG3 -7, 9, 12, 14

5-1

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01Service Manual - LEX

5. PERFORMANCE DATA & PRESSURE CURVES

5.1 LEX7 / ONG7 R410A

5.1.1 Cooling Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

LEGEND

TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OD – Outdoor

(1) Marked area is below standard operating limits. For operating in low ambient

conditions, refer to Optional Accessories (Chapter 15).

Entering Air WB/DB ID Coil(oC)

15/21 17/24 19/27 21/29 23/32

TC

2.23 2.31 2.37 2.42 2.46

15

(1)

SC

1.59 1.65 1.72 1.76 1.79

PI

0.45 0.45 0.45 0.45 0.45

TC

2.16 2.28 2.35 2.41 2.46

20

(1)

SC

1.55 1.64 1.71 1.76 1.79

PI

0.49 0.49 0.49 0.49 0.49

TC

2.05 2.21 2.32 2.39 2.45

25 SC

1.52 1.61 1.70 1.74 1.78

PI

0.52 0.53 0.53 0.53 0.54

TC

1.91 2.08 2.25 2.33 2.40

30 SC

1.47 1.56 1.66 1.71 1.74

PI

0.57 0.57 0.58 0.58 0.59

TC

1.77 1.92

2.12

2.23 2.33

35 SC

1.40 1.50

1.62

1.67 1.70

PI

0.61 0.62

0.63

0.63 0.64

TC

1.61 1.75 1.91 2.09 2.20

40 SC

1.32 1.42 1.53 1.58 1.61

PI

0.66 0.67 0.68 0.69 0.69

TC

1.40 1.53 1.68 1.86 2.00

46 SC

1.21 1.30 1.40 1.45 1.48

PI

0.72 0.73 0.75 0.76 0.77

Entering Air DB

OD Coil(

o

C)

Data

5-2

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01 Service Manual - LEX

5.1.2 Heating Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

* the above chart includes the weighted deicing infleuence.

LEGEND

TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OD – Outdoor

5.2 Capacity Correction Factor Due to Tubing Length

5.2.1 Cooling

TOTAL TUBING LENGTH (One Way)

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.02

1

0.961 0.949 --- --- --- --- ---

* Minimum recommended tubing length between indoor and outdoor units is 3m.

5.2.2 Heating

TOTAL TUBING LENGTH (One Way)

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.05

1

0.975 0.965 --- --- --- --- ---

* Minimum recommended tubing length between indoor and outdoor units is 3m.

15 20 25

ENTERING WB

OD COIL(

o

C)

TH Pl TH Pl TH Pl

-10 1.13 0.48 1.09 0.51 1.04 0.53

-7 1.21 0.49 1.17 0.51 1.13 0.54

-2 1.29 0.49 1.25 0.52 1.20 0.55
2 1.57 0.52 1.51 0.55 1.44 0.58

62.210.56

2.15 0.60

2.07 0.63
10 2.41 0.59 2.34 0.63 2.28 0.67
15 2.60 0.61 2.54 0.66 2.47 0.70
20 2.74 0.63 2.68 0.68 2.60 0.74

ENTERING AIR DB ID COIL(

O

C)

5-3

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01Service Manual - LEX

5.3 Pressure Curves.

5.3.1 Cooling.

Suction Pressure VS.Outdoor Temp

5.0

6.0

7.0

8.0

9.0

10.0

11.0

12.0

13.0

14.0

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Suction Pressure (Bar[g])

15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)

Discharge Pressure VS.Outdoor Temp

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Discharge Pressure (Bar[g])

15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)

5-4

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01 Service Manual - LEX

5.3.2 Heating.

Discharge Pressure VS.Outdoor Temp

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Discharge Pressure (Bar[g])

15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)

Discharge Pressure VS.Outdoor Temp

16

18

20

22

24

26

28

30

32

-10 -5 0 5 10 15 20

Outdoor Temp.( WB oC )

Discharge Pressure(Bar[g])

25 DB (ºC)
20 DB (ºC)
15 DB (ºC)

5-5

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01Service Manual - LEX

5.4 LEX9 / ONG9 R410A

5.4.1 Cooling Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

LEGEND

TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OD – Outdoor

(1) Marked area is below standard operating limits. For operating in low ambient

conditions, refer to Optional Accessories (Chapter 15).

Entering Air WB/DB ID Coil(oC)

15/21 17/24 19/27 21/29 23/32

TC

2.87 2.97 3.04 3.11 3.16

15

(1)

SC

1.93 2.01 2.09 2.14 2.18

PI

0.58 0.59 0.59 0.59 0.59

TC

2.77 2.92 3.02 3.09 3.15

20

(1)

SC

1.89 1.99 2.08 2.14 2.18

PI

0.64 0.64 0.64 0.64 0.64

TC

2.62 2.83 2.98 3.07 3.14

25 SC

1.84 1.95 2.06 2.12 2.16

PI

0.69 0.69 0.70 0.70 0.70

TC

2.45 2.67 2.89 2.99 3.08

30 SC

1.78 1.90 2.02 2.08 2.11

PI

0.74 0.75 0.76 0.76 0.77

TC

2.27 2.47

2.72

2.86 2.99

35 SC

1.70 1.82

1.97

2.03 2.07

PI

0.80 0.81

0.83

0.83 0.84

TC

2.07 2.25 2.45 2.68 2.82

40 SC

1.60 1.72 1.86 1.92 1.96

PI

0.86 0.87 0.89 0.90 0.91

TC

1.79 1.96 2.16 2.38 2.57

46 SC

1.47 1.58 1.70 1.76 1.80

PI

0.94 0.96 0.98 0.99 1.00

Entering Air DB

OD Coil(

o

C)

Data

5-6

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01 Service Manual - LEX

5.4.2 Heating Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

* the above chart includes the weighted deicing infleuence.

LEGEND

TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OD – Outdoor

5.5 Capacity Correction Factor Due to Tubing Length

5.5.1 Cooling

TOTAL TUBING LENGTH (One Way)

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.02

1

0.961 0.950 --- --- --- --- ---

* Minimum recommended tubing length between indoor and outdoor units is 3m.

5.5.2 Heating

TOTAL TUBING LENGTH (One Way)

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.05

1

0.975 0.961 --- --- --- --- ---

* Minimum recommended tubing length between indoor and outdoor units is 3m.

15 20 25

ENTERING WB

OD COIL(

o

C)

TH Pl TH Pl TH Pl

-10 1.52 0.68 1.46 0.72 1.41 0.76

-7 1.64 0.70 1.58 0.73 1.52 0.77

-2 1.74 0.70 1.68 0.75 1.62 0.79
2 2.12 0.74 2.03 0.79 1.94 0.83
6 2.99 0.79

2.90 0.85

2.80 0.90
10 3.25 0.84 3.16 0.90 3.07 0.96
15 3.51 0.87 3.42 0.94 3.34 1.00
20 3.70 0.90 3.61 0.98 3.51 1.05

ENTERING AIR DB ID COIL(

O

C)

5-7

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01Service Manual - LEX

5.6 Pressure Curves.

5.6.1 Cooling.

Suction Pressure VS.Outdoor Temp

5.0

6.0

7.0

8.0

9.0

10.0

11.0

12.0

13.0

14.0

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Suction Pressure (Bar[g])

15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)

Discharge Pressure VS.Outdoor Temp

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Discharge Pressure (Bar[g])

15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)

5-8

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01 Service Manual - LEX

5.6.2 Heating.

Suction Pressure VS.Outdoor Temp

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

11.0

12.0

-10 -5 0 5 10 15 20

Outdoor Temp.( WB oC )

Suction Pressure(Bar[g])

15 DB (ºC)
20 DB (ºC)
25 DB (ºC)

Discharge Pressure VS.Outdoor Temp

16

18

20

22

24

26

28

30

32

34

36

-10 -5 0 5 10 15 20

Outdoor Temp.( WB oC )

Discharge Pressure(Bar[g])

25 DB (ºC)
20 DB (ºC)
15 DB (ºC)

5-9

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01Service Manual - LEX

5.7 LEX12 / ONG12 R410A

5.7.1 Cooling Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

LEGEND

TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (

o

C)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OD – Outdoor

(1) Marked area is below standard operating limits. For operating in low ambient

conditions, refer to Optional Accessories (Chapter 15).

Entering Air WB/DB ID Coil(oC)

15/21 17/24 19/27 21/29 23/32

TC

3.77 3.91 4.00 4.10 4.16

15

(1)

SC

2.57 2.68 2.78 2.85 2.90

PI

0.79 0.79 0.79 0.79 0.80

TC

3.65 3.85 3.97 4.06 4.15

20

(1)

SC

2.51 2.65 2.76 2.84 2.89

PI

0.86 0.86 0.86 0.87 0.87

TC

3.45 3.73 3.92 4.04 4.14

25 SC

2.45 2.60 2.74 2.82 2.87

PI

0.92 0.93 0.94 0.94 0.95

TC

3.23 3.52 3.80 3.93 4.05

30 SC

2.37 2.52 2.68 2.76 2.81

PI

1.00 1.01 1.02 1.03 1.04

TC

2.99 3.25

3.58

3.76 3.94

35 SC

2.26 2.42

2.62

2.70 2.75

PI

1.08 1.09

1.11

1.12 1.13

TC

2.72 2.96 3.23 3.53 3.71

40 SC

2.13 2.29 2.48 2.56 2.61

PI

1.16 1.18 1.20 1.21 1.23

TC

2.36 2.58 2.84 3.13 3.38

46 SC

1.96 2.10 2.26 2.34 2.39

PI

1.27 1.29 1.32 1.34 1.35

Entering Air DB

OD Coil(

o

C)

Data

5-10

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01 Service Manual - LEX

5.7.2 Heating Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

* the above chart includes the weighted deicing infleuence.

LEGEND

TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OD – Outdoor

5.8 Capacity Correction Factor Due to Tubing Length

5.8.1 Cooling

TOTAL TUBING LENGTH (One Way)

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.02

1

0.961 0.948 --- --- --- --- ---

* Minimum recommended tubing length between indoor and outdoor units is 3m.

5.8.2 Heating

TOTAL TUBING LENGTH (One Way)

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.05

1

0.975 0.963 --- --- --- --- ---

* Minimum recommended tubing length between indoor and outdoor units is 3m.

15 20 25

ENTERING WB

OD COIL(

o

C)

TH Pl TH Pl TH Pl

-10 2.18 0.92 2.10 0.98 2.01 1.02

-7 2.34 0.94 2.26 0.99 2.18 1.04

-2 2.49 0.95 2.41 1.01 2.32 1.06
2 3.03 1.00 2.91 1.06 2.78 1.12
6 4.27 1.07

4.15 1.15

4.00 1.22
10 4.65 1.13 4.52 1.21 4.40 1.29
15 5.02 1.18 4.90 1.27 4.77 1.35
20 5.29 1.21 5.17 1.32 5.02 1.42

ENTERING AIR DB ID COIL(

O

C)

5-11

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01Service Manual - LEX

5.9 Pressure Curves.

5.9.1 Cooling.

Suction Pressure VS.Outdoor Temp

5.0

6.0

7.0

8.0

9.0

10.0

11.0

12.0

13.0

14.0

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Suction Pressure (Bar[g])

15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)

Discharge Pressure VS.Outdoor Temp

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Discharge Pressure (Bar[g])

15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)

5-12

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01 Service Manual - LEX

5.9.2 Heating.

Suction Pressure VS.Outdoor Temp

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

11.0

-10 -5 0 5 10 15 20

Outdoor Temp.( WB oC )

Suction Pressure(Bar[g])

15 DB (ºC)
20 DB (ºC)
25 DB (ºC)

Discharge Pressure VS.Outdoor Temp

16

18

20

22

24

26

28

30

32

34

36

38

-10 -5 0 5 10 15 20

Outdoor Temp.( WB oC )

Discharge Pressure(Bar[g])

25 DB (ºC)
20 DB (ºC)
15 DB (ºC)

5-13

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01Service Manual - LEX

5.10 LEX14 / ONG14 R410A

5.10.1 Cooling Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

LEGEND

TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OD – Outdoor

(1) Marked area is below standard operating limits. For operating in low ambient

conditions, refer to Optional Accessories (Chapter 15).

Entering Air WB/DB ID Coil(oC)

15/21 17/24 19/27 21/29 23/32

TC

4.45 4.61 4.72 4.83 4.90

15

(1)

SC

2.89 3.01 3.13 3.21 3.27

PI

0.93 0.93 0.93 0.93 0.94

TC

4.30 4.54 4.68 4.79 4.89

20

(1)

SC

2.83 2.98 3.11 3.20 3.26

PI

1.01 1.01 1.02 1.02 1.02

TC

4.07 4.40 4.62 4.76 4.88

25 SC

2.76 2.93 3.09 3.18 3.23

PI

1.09 1.10 1.10 1.11 1.12

TC

3.81 4.15 4.48 4.64 4.78

30 SC

2.67 2.84 3.02 3.11 3.17

PI

1.18 1.19 1.20 1.21 1.22

TC

3.53 3.83

4.22

4.43 4.64

35 SC

2.54 2.72

2.95

3.04 3.09

PI

1.27 1.29

1.31

1.32 1.33

TC

3.21 3.49 3.81 4.16 4.38

40 SC

2.39 2.58 2.79 2.88 2.94

PI

1.37 1.39 1.41 1.43 1.44

TC

2.78 3.04 3.34 3.69 3.98

46 SC

2.21 2.36 2.54 2.63 2.69

PI

1.49 1.52 1.55 1.57 1.59

Entering Air DB

OD Coil(

o

C)

Data

5-14

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01 Service Manual - LEX

5.10.2 Heating Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

* the above chart includes the weighted deicing infleuence.

LEGEND

TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OD – Outdoor

5.11 Capacity Correction Factor Due to Tubing Length

5.11.1 Cooling

TOTAL TUBING LENGTH (One Way)

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.02

1

0.984 0.946 --- --- --- --- ---

* Minimum recommended tubing length between indoor and outdoor units is 3m.

5.11.2 Heating

TOTAL TUBING LENGTH (One Way)

3m

7.5m

10m 15m 20m 25m 30m 40m 50m

1.03

1

0.995 0.971 --- --- --- --- ---

* Minimum recommended tubing length between indoor and outdoor units is 3m.

15 20 25

ENTERING WB

OD COIL(

o

C)

TH Pl TH Pl TH Pl

-10 2.31 0.90 2.22 0.96 2.13 1.01

-7 2.49 0.93 2.40 0.98 2.31 1.03

-2 2.64 0.94 2.55 1.00 2.46 1.05
2 3.21 0.98 3.08 1.05 2.95 1.11

64.531.06

4.40 1.13

4.25 1.20
10 4.93 1.12 4.80 1.19 4.66 1.28
15 5.32 1.16 5.19 1.26 5.06 1.33
20 5.61 1.20 5.48 1.30 5.32 1.40

ENTERING AIR DB ID COIL(

O

C)

5-15

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01Service Manual - LEX

5.12 Pressure Curves.

5.12.1 Cooling.

Suction Pressure VS.Outdoor Temp

5.0

6.0

7.0

8.0

9.0

10.0

11.0

12.0

13.0

14.0

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Suction Pressure (Bar[g])

15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)

Discharge Pressure VS.Outdoor Temp

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Discharge Pressure (Bar[g])

15/21(WB/DB ºC)
17/24(WB/DB ºC)
19/27(WB/DB ºC)
21/29(WB/DB ºC)
23/32(WB/DB ºC)

5-16

PERFORMANCE DATA & PRESSURE CURVES

Revision Y06-01 Service Manual - LEX

5.12.2 Heating.

Suction Pressure VS.Outdoor Temp

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

11.0

-10 -5 0 5 10 15 20

Outdoor Temp.( WB oC )

Suction Pressure(Bar[g])

15 DB (ºC)
20 DB (ºC)
25 DB (ºC)

Discharge Pressure VS.Outdoor Temp

16

18

20

22

24

26

28

30

32

34

36

38

-10 -5 0 5 10 15 20

Outdoor Temp.( WB oC )

Discharge Pressure(Bar[g])

25 DB (ºC)
20 DB (ºC)
15 DB (ºC)

6-1

SOUND LEVEL CHARACTERISTICS

Revision Y06-01Service Manual - LEX

6. SOUND LEVEL CHARACTERISTICS

6.1 Sound Pressure Level

6.2 Sound Pressure Level Spectrum

(Measured as Figure 1)

FAN SPEED LINE

HI
ME
LO

0.8m

Mic.

Unit

Wall

LEX 12 RC LEX 14 RC

LEX 7 RC LEX 9 RC

Figure 1