Electra LEX 7 User 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

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

A ........................... 0

i............................. 0

1-1 - 1-4................ 0

2-1 - 2-4................ 0

3-1 ........................ 0

4-1 ........................ 0

5-1 - 5-16.............. 0

6-1 - 6-2................ 0

7-1 ........................ 0

8-1 - 8-2................ 0

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10-1-10-2.............. 0

11-1....................... 0

12-1-12-33............ 0

13-1-13-2.............. 0

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.

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

V/Ph/Hz

A2.8

H/M/L RPM

H/M/L m3/hr

Min-Max Pa

H/M/L dB(A)

l/hr

WxHxD mm

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)

(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

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

7400

2.12 2.17

0.63 0.595

3.37

7230

945x395x655

45/41/39

30/27/25

0.7

810x210x285

795x290x610

380/320/280

860/760/660

870x285x355

13.5

680

Package dimensions

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

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

V/Ph/Hz

A3.7

H/M/L RPM

H/M/L m3/hr

Min-Max Pa

H/M/L dB(A)

l/hr

WxHxD mm

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)

(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).

795x290x610

4mL10m: +0g; 10m L15m: +100g

13.5

1780

220-240V/Single/50Hz

18.7

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

9890

2.72 2.90

0.825 0.849

3.30

9280

960/860/760

945x395x655

49/46/44

35/31/28

0.9

810x210x285

870x285x355

1/4"(6.35)

9 levels

3 levels

R410A

Capillary tube (with 029 restrictor)

Propeller(direct) x 1

Rotary,Hitachi ASG108CV-B7AT

780

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

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

V/Ph/Hz

A5.0

H/M/L RPM

H/M/L m3/hr

Min-Max Pa

H/M/L dB(A)

l/hr

WxHxD mm

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)

(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).

795x290x610

11.5

870x285x355

220-240V/Single/50Hz

Crossflow x 1

5.25.0

LEX-12

ONG-12

Flared

3.62

HeatingCooling

Fan speeds

Fan type & quantity

Compressor type,model

Refrigerant control

14160

3.58 4.15

1.112 1.145

3.22

12210

635/550/450

1230/1080/930

945x395x655

55/53/49

43/39/35

1.3

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

INDOOROUTDOOR

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

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

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