Electra DELTA 21ST, GC 18 RC, DELTA 24RC, GC 18 ST, GC 22 ST Service Manual

DELTA 18-21-24

Indoor Units Outdoor Units

DELTA 18

GC 18

DELTA 21

GC 22

DELTA 24

OU7-24
OU7-24Z

Service Manual

SM DELTA 1-E.0 GB

JUNE – 2010

REFRIGERANT

R410A

HEAT PUMP

COOLING ONLY

A

LIST OF EFFECTIVE PAGES

SM DELTA 1-E.0 GB

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 ........ JUNE 2010

Total number of pages in this publication is 93 consisting of the following:

Page
No.

Revision
No. #

Page
No.

Revision
No. #

Page
No.

Revision
No. #

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

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

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

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

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14-1-14-24 ............ 0

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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

SM DELTA 1-E.0 GB

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

SM DELTA 1-E.0 GB

1. INTRODUCTION

1.1 General

The new DELTA split wall mounted is based on the compact range. It comprise the ST
(cooling only) and RC (heat pump) models, as follows:

Cooling Only:• DELTA 18ST, DELTA 21ST, DELTA 24ST
Heat Pump:• DELTA 18RC, DELTA 21RC, DELTA 24RC

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

1.2 Main Features

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

 R410A refrigerant

 Micro processor control.

 Infrared remote control with LED display.

 Indoor large diameter cross flow fan, allowing low operation sound level.

 Bended Indoor coil with treated aluminum fins and coating for improved efficiency.

 High COP.

 Easy access to the interconnecting tubing and wiring connections.

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

directions.

 The units are equipped.

 Water condensate tray is equipped with two optional drain connections.

 Automatic treated air sweep.

 Low indoor noise levels.

 Easy installation and service.

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.

 Motorized flaps.

 3-speed motor with internal protection.

 Advanced electronic control box assembly.

 Interconnecting wiring terminal block.

 Mounting plate.

1-2

INTRODUCTION

SM DELTA 1-E.0 GB

1.4 Filtration

The DELTA series presents several types of air filters:

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

 Pre-charged electrostatic filter (diposable).

 Active carbon filter (optional).

 Active Electro Static re-usable filter (optional).

1.5 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 Operation Manual, Appendix A.

1.6 Outdoor Unit

The DELTA 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.

 Compressor mounted in a soundproofed compartment.

 Outlet air fan grill.

 Service valves” flare” type connection.

 Interconnecting wiring terminal block.

1.7 Tubing Connections

Flare type interconnecting tubing can be produced on site.
For further details please refer to the Installation Manual, Chapter 11.

1.8 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 15.

1.9 Inbox Documentation

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

1-3

INTRODUCTION

SM DELTA 1-E.0 GB

1.10 Matching Table

1.10.1 R410A

OUTDOOR UNITS

INDOOR UNITS

MODEL

REFRIGER.

DELTA 18 DELTA 21 DELTA 24

GC 18 ST/RC R410A



GC 22 ST/RC R410A



GC 24 ST/RC R410A



OU7-24 R410A



OU7-24Z R410A



The above table lists outdoor units and DELTA 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

SM DELTA 1-E.0 GB

2. PRODUCT DATA SHEET

2.1 DELTA 18 / GC 18 R410A

Model Indoor Unit DELTA- 18
Model Outdoor Unit GC-18

Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating

Capacity

(4)

Btu/hr 18250 18250 18420

kW 5.35 5.35 5.40

Power input

(4)

kW 1.66 1.66 1.56

EER (Cooling) or COP(Heating)

(4)

W/W 3.22 3.22 3.46
Energy efficiency class A A B
Power supply V/Hz/Ph 220-240V/50Hz/Single
Rated current A 7.5 7 7.1
Starting current A 43
Circuit breaker rating A 15

INDOOR

Fan type & quantity Cross flow*1
Fan speeds H/M/L RPM 1200/1100/1000
Air flow

(1)

H/M/L m3/hr 930/840/750
External static pressure Min-Max Pa N/A
Sound power level

(2)

H/M/L dB(A) 56/53/50
Sound pressure level

(3)

H/M/L dB(A) 43/40/37
Moisture removal l/hr 1.8
Condenstate drain tube I.D mm 16
Dimensions WxHxD mm 1060/295/210
Weight kg 14
Package dimensions WxHxD mm 1115/350/260
Packaged weight kg 17
Units per pallet units 16
Stacking height units 8

OUTDOOR

Refrigerant control Capillary tube
Compressor type,model Rotary,TOSHIBA PA200X2CS-4KU1
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 815
Air flow H/L m3/hr 2480
Sound power level H/L dB(A) 68
Sound pressure level

(3)

H/L dB(A) 57
Dimensions WxHxD mm 846/302/690
Weight kg 56
Package dimensions WxHxD mm 990/430/770
Packaged weight kg 61
Units per pallet Units 9
Stacking height units 3
Refrigerant type R410A
Refrigerant chargless distance kg/m 1.54kg/7.5m

Additional charge g/m

4mLength10m 1540g 10mLength18m 1690g

18mLength25m 1900g

Connections between

units

Liquid line In.(mm) 1/4"(6.35)
Suction line In.(mm) 1/2"(12.7)
Max.tubing length m. 25

Max.height difference m. 15
Operation control type Remote control
Heating elements kW
Others All season kit Factory option

(1)

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

(2)

Airflow in ducted units; at nominal external static pressure.

(3)

Sound power in ducted units is measured at air discharge.

(4)

Sound pressure level measured at 1 meter distance from unit.

2-2

PRODUCT DATA SHEET

SM DELTA 1-E.0 GB

2.2 DELTA 21 / GC 22 R410A

Model Indoor Unit DELTA- 21
Model Outdoor Unit GC-22

Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating

Capacity

(4)

Btu/hr 21150 21150 22180

kW 6.2 6.2 6.50

Power input

(4)

kW 2.05 2.05 2.00

EER (Cooling) or COP(Heating)

(4)

W/W 3.02 3.02 3.25
Energy efficiency class B B C
Power supply V/Hz/Ph 220-240V/50Hz/Single
Rated current A 9.3 9.3 9.7
Starting current A 50
Circuit breaker rating A 20

INDOOR

Fan type & quantity Cross flow*1
Fan speeds H/M/L RPM 1300/1200/1100
Air flow

(1)

H/M/L m3/hr 910/820/740
External static pressure Min-Max Pa 0
Sound power level

(2)

H/M/L dB(A) 60/57/55
Sound pressure level

(3)

H/M/L dB(A) 47/44/42
Moisture removal l/hr 2.3
Condenstate drain tube I.D mm 16
Dimensions WxHxD mm 1060x295x210
Weight kg 15
Package dimensions WxHxD mm 1125x360x280
Packaged weight kg 18
Units per pallet units 16
Stacking height units 8

OUTDOOR

Refrigerant control Capillary tube
Compressor type,model Rotary,TOSHIBA PA240X2CS-4KU1
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 815
Air flow H/L m3/hr 2860
Sound power level H/L dB(A) 69
Sound pressure level

(3)

H/L dB(A) 59
Dimensions WxHxD mm 846/302/690
Weight kg 56
Package dimensions WxHxD mm 990/720/430
Packaged weight kg 61
Units per pallet Units 9
Stacking height units 3 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 2.0kg/7.5m

Additional charge g/m

4mLength10m:+0g;
10mLength15m:+330g;
15mLength20m:+460g

Connections between

units

Liquid line In.(mm) 3/8"(9.53)
Suction line In.(mm) 5/8"(15.88)
Max.tubing length m. Max 20

Max.height difference m. Max 15
Operation control type Remote control
Heating elements kW 1.65/0.9
Others

(1)

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

(2)

Airflow in ducted units; at nominal external static pressure.

(3)

Sound power in ducted units is measured at air discharge.

(4)

Sound pressure level measured at 1 meter distance from unit.

2-3

PRODUCT DATA SHEET

SM DELTA 1-E.0 GB

2.3 DELTA 24 / OU7-24 R410A

Model Indoor Unit DELTA- 24
Model Outdoor Unit OU7-24

Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating

Capacity

(4)

Btu/hr 23100 23100 24150

kW 6.77 6.77 7.08

Power input

(4)

kW 2.24 2.24 2.35

EER (Cooling) or COP(Heating)

(4)

W/W 3.02 3.02 2.95
Energy efficiency class B B D
Power supply V/Hz/Ph 220-240V/50Hz/Single
Rated current A 10.5 10.5 11.0
Starting current A 63
Circuit breaker rating A 20

INDOOR

Fan type & quantity Cross flow*1
Fan speeds H/M/L RPM 1300/1200/1100
Air flow

(1)

H/M/L m3/hr 910/820/740
External static pressure Min-Max Pa N/A
Sound power level

(2)

H/M/L dB(A) 60/57/55
Sound pressure level

(3)

H/M/L dB(A) 47/44/42
Moisture removal l/hr 2.3
Condenstate drain tube I.D mm 16
Dimensions WxHxD mm 1060x295x210
Weight kg 15
Package dimensions WxHxD mm 1125x360x280
Packaged weight kg 18
Units per pallet units 16
Stacking height units 8

OUTDOOR

Refrigerant control Capillary tube
Compressor type,model Rotary
Fan type & quantity AXIAL*1
Fan speeds H/L RPM 850 720
Air flow H/L m3/hr 3100 2600
Sound power level H/L dB(A) 67 62
Sound pressure level

(3)

H/L dB(A) 58 54
Dimensions WxHxD mm 900/680/340
Weight kg 74
Package dimensions WxHxD mm 985/730/406
Packaged weight kg 77
Units per pallet Units 6
Stacking height units 2 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 2.035kg/12.5m

Additional charge g/m

12.5m<dd 350g<15m;
15m

<dd 1040g<20m;

Connections between

units

Liquid line In.(mm) 3/8"(9.53)
Suction line In.(mm) 5/8"(15.88)
Max.tubing length m. Max 20

Max.height difference m. Max 15
Operation control type Remote control
Heating elements kW
Others All season kit Factory option

(1)

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

(2)

Airflow in ducted units; at nominal external static pressure.

(3)

Sound power in ducted units is measured at air discharge.

(4)

Sound pressure level measured at 1 meter distance from unit.

2-4

PRODUCT DATA SHEET

SM DELTA 1-E.0 GB

2.4 DELTA 24 / OU7-24Z R410A

Model Indoor Unit DELTA- 24
Model Outdoor Unit OU7-24Z

Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating

Capacity

(4)

Btu/hr 23100 23100 24150

kW 6.77 6.77 7.08

Power input

(4)

kW 2.24 2.24 2.35

EER (Cooling) or COP(Heating)

(4)

W/W 3.02 3.02 2.95
Energy efficiency class B B D
Power supply V/Hz/Ph 220-240V/50Hz/Single
Rated current A 10.5 10.5 11.0
Starting current A 63
Circuit breaker rating A 20

INDOOR

Fan type & quantity Cross flow*1
Fan speeds H/M/L RPM 1300/1200/1100
Air flow

(1)

H/M/L m3/hr 910/820/740
External static pressure Min-Max Pa N/A
Sound power level

(2)

H/M/L dB(A) 60/57/55
Sound pressure level

(3)

H/M/L dB(A) 47/44/42
Moisture removal l/hr 2.3
Condenstate drain tube I.D mm 16
Dimensions WxHxD mm 1060x295x210
Weight kg 15
Package dimensions WxHxD mm 1125x360x280
Packaged weight kg 18
Units per pallet units 16
Stacking height units 8

OUTDOOR

Refrigerant control Capillary tube
Compressor type,model Rotary
Fan type & quantity AXIAL*1
Fan speeds H/L RPM 850 720
Air flow H/L m3/hr 3100 2600
Sound power level H/L dB(A) 67 62
Sound pressure level

(3)

H/L dB(A) 58 54
Dimensions WxHxD mm 900/680/340
Weight kg 64
Package dimensions WxHxD mm 985/730/406
Packaged weight kg 67
Units per pallet Units 6
Stacking height units 2 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 1.7kg / 7.5m

Additional charge g/m 7.5m<dd 30g / <15m;

Connections between

units

Liquid line In.(mm) 3/8"(9.53)
Suction line In.(mm) 5/8"(15.88)
Max.tubing length m. Max 15

Max.height difference m. Max 7
Operation control type LCD Remote control
Heating elements kW
Others

(1)

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

(2)

Airflow in ducted units; at nominal external static pressure.

(3)

Sound power in ducted units is measured at air discharge.

(4)

Sound pressure level measured at 1 meter distance from unit.

2-5

PRODUCT DATA SHEET

SM DELTA 1-E.0 GB

2.4 DELTA 24 / OU7-24T R410A

Model Indoor Unit DELTA- 24
Model Outdoor Unit OU7-24T

Installation Method of Pipe Flared
Characteristics Units Cooling Only Cooling Heating

Capacity

(4)

Btu/hr 23220 23220 25130

kW 6.81 6.81 7.37

Power input

(4)

kW 2.26 2.26 2.4

EER (Cooling) or COP(Heating)

(4)

W/W 3.02 3.02 3.07
Energy efficiency class B B D
Power supply V/Hz/Ph 400V/50Hz/3N
Rated current A 4.1×3 4.1×3 4.4×3
Starting current A 55
Circuit breaker rating A 10×3

INDOOR

Fan type & quantity Cross flow*1
Fan speeds H/M/L RPM 1300/1200/1100
Air flow

(1)

H/M/L m3/hr 990/930/840
External static pressure Min-Max Pa N/A
Sound power level

(2)

H/M/L dB(A) 58/55/53
Sound pressure level

(3)

H/M/L dB(A) 45/42/40
Moisture removal l/hr 2.3
Condenstate drain tube I.D mm 16
Dimensions WxHxD mm 1060/295/210
Weight kg 15
Package dimensions WxHxD mm 1115/350/260
Packaged weight kg 18
Units per pallet units 16
Stacking height units 8

OUTDOOR

Refrigerant control Capillary tube
Compressor type,model Rotary
Fan type & quantity AXIAL*1
Fan speeds H/L RPM 850 720
Air flow H/L m3/hr 3100 2600
Sound power level H/L dB(A) 67 62
Sound pressure level

(3)

H/L dB(A) 58 54
Dimensions WxHxD mm 900/680/340
Weight kg 74
Package dimensions WxHxD mm 985/730/406
Packaged weight kg 74
Units per pallet Units 6
Stacking height units 2 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 2.035kg / 12.5m

Additional charge g/m

12.5m<dd 350g <15m;

12.5m<Add 1040g<20m

Connections between

units

Liquid line In.(mm) 3/8"(9.53)
Suction line In.(mm) 5/8"(15.88)
Max.tubing length m. Max 20

Max.height difference m. Max 15
Operation control type LCD Remote control
Heating elements kW
Others

All season kit Factory option

(1)

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

(2)

Airflow in ducted units; at nominal external static pressure.

(3)

Sound power in ducted units is measured at air discharge.

(4)

Sound pressure level measured at 1 meter distance from unit.

3-1

RATING CONDITIONS

SM DELTA 1-E.0 GB

3. RATING CONDITIONS

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

Cooling:

Indoor: 27

o

C DB 19oC WB

Outdoor: 35

o

C DB

Heating:

Indoor: 20

o

C DB

Outdoor: 7

o

C 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 21oC DB

Heating

Upper limit 27

o

C DB 24oC DB 18oC WB

Lower limit 20

o

C DB -9oC DB -10oC WB

Voltage

1PH 198 – 264 V

3PH 360 – 440 V

4-1

OUTLINE DIMENSIONS

SM DELTA 1-E.0 GB

4. OUTLINE DIMENSIONS

4.1 Indoor Unit: DELTA 18, 21, 24

4.2

Outdoor Unit: GC 18, 22

4-2

OUTLINE DIMENSIONS

SM DELTA 1-E.0 GB

4.3 Outdoor Unit: OU7-24, OU7-24Z

5-1

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.1 DELTA18 GC18 R410A

5.1.1 Cooling Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

ENTERING AIR

DB OU COIL (°C)

DATA

ENTERING AIR WB/DB ID COIL ( °C)

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

15

(1)

TC

5.64 5.84 5.98 6.12 6.21

SC

3.87 4.03 4.19 4.30 4.38

PI

1.18 1.18 1.18 1.18 1.19

20

(1)

TC

5.46 5.75 5.93 6.07 6.20

SC

3.79 4.00 4.17 4.28 4.36

PI

1.28 1.28 1.29 1.29 1.30

25

TC

5.16 5.57 5.86 6.04 6.18

SC

3.69 3.92 4.13 4.25 4.33

PI

1.38 1.39 1.40 1.41 1.42

30

TC

4.83 5.26 5.68 5.88 6.05

SC

3.58 3.80 4.04 4.16 4.24

PI

1.49 1.51

1.52

1.54 1.55

35

TC

4.47 4.85

5.35

5.62 5.88

SC

3.40 3.65 3.95 4.06 4.14

PI

1.61 1.63

1.66

1.67 1.68

40

TC

4.06 4.42

4.83

5.28 5.55

SC

3.21 3.45 3.74 3.86 3.93

PI

1.73 1.76 1.79 1.81 1.83

46

TC

3.53 3.86 4.24 4.68 5.05

SC

2.95 3.16 3.41 3.53 3.60

PI

1.89 1.92 1.97 1.99 2.02

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
OU – Outdoor

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

conditions, refer to Optional Accessories (Chapter 15).

5. PERFORMANCE DATA & PRESSURE CURVES

5-2

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.1.2 Heating Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

ENTERING AIR DB ID COIL ( °C)

15 20 25

ENTERING AIR

WB OU COIL ( °C)

TH PI TH PI TH PI

-10 2.84 1.25 2.73 1.33 2.62 1.40

-7 3.05 1.28 2.94 1.35 2.84 1.42

-2 3.24 1.29 3.13 1.37 3.02 1.45
2 3.94 1.36

3.78 1.44

3.62 1.53

6 5.56 1.46 5.40 1.56 5.21 1.66

10 6.05 1.54

5.89 1.65

5.72 1.76
15 6.53 1.61 6.37 1.73 6.21 1.84
20 6.89 1.65 6.72 1.79 6.53 1.93

*

the above chart includes the weighted deicing infleuence.

LEGEND

TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OU – Outdoor

5.2 Capacity Correction Factor Due to Tubing Length

5.2.1 Cooling

TOTAL TUBING LENGTH

3m

7.5m

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

1.02

1

0.99 0.975 0.965 0.950 --- --- ---

*

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

5.2.2 Heating

TOTAL TUBING LENGTH

3m

7.5m

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

1.05

1

1 0.993 0.988 0.978 --- --- ---

*

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

5-3

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.3 Pressure Curves.

5.3.1 Cooling.

Suction Pressure VS.Outdoor Temp

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

11.0

11.5

12.0

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Suction Pressure (Bar[g])

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

5-4

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.3.2 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 101520

Outdoor Temp.( WB oC )

Suction Pressure(Bar[g])

15 DB (ºC)

20 DB (ºC)

25 DB (ºC)

Discharge Pressure VS.Outdoor Temp

14

16

18

20

22

24

26

28

30

32

34

36

-10-5 0 5 101520

Outdoor Temp.( WB oC )

Discharge Pressure(Bar[g])

25 DB (ºC)

20 DB (ºC)

15 DB (ºC)

5-5

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.4 DELTA21 GC21 R410A

5.4.1 Cooling Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

ENTERING AIR

DB OU COIL (°C)

DATA

ENTERING AIR WB/DB ID COIL ( °C)

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

15

(1)

TC

6.53 6.77 6.93 7.09 7.20

SC

4.45 4.64 4.82 4.94 5.03

PI

1.45 1.46 1.46 1.46 1.47

20

(1)

TC

6.32 6.66 6.87 7.04 7.19

SC

4.36 4.59 4.79 4.92 5.01

PI

1.58 1.58 1.59 1.60 1.60

25

TC

5.98 6.46 6.79 7.00 7.17

SC

4.25 4.51 4.75 4.89 4.98

PI

1.71 1.72 1.73 1.74 1.75

30

TC

5.59 6.09 6.58 6.81 7.02

SC

4.11 4.37 4.65 4.78 4.87

PI

1.84 1.87

1.88

1.90 1.91

35

TC

5.18 5.62

6.20

6.51 6.82

SC

3.91 4.19 4.54 4.67 4.76

PI

1.98 2.02

2.05

2.07 2.08

40

TC

4.71 5.13

5.59

6.12 6.43

SC

3.69 3.97 4.29 4.43 4.52

PI

2.14 2.17 2.21 2.24 2.26

46

TC

4.09 4.47 4.91 5.43 5.85

SC

3.40 3.64 3.92 4.05 4.14

PI

2.34 2.37 2.43 2.46 2.49

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
OU – Outdoor

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

conditions, refer to Optional Accessories (Chapter 15).

5-6

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.4.2 Heating Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

ENTERING AIR DB ID COIL ( °C)

15 20 25

ENTERING AIR

WB OU COIL ( °C)

TH PI TH PI TH PI

-10

3.41 1.60 3.28 1.70 3.15 1.79

-7 3.67 1.64 3.54 1.73 3.41 1.82

-2 3.90 1.66 3.77 1.76 3.64 1.86
2 4.75 1.74

4.55 1.85

4.36 1.96

6 6.70 1.87 6.50 2.00 6.27 2.12

10 7.28 1.97

7.09 2.11

6.89 2.26

15 7.87 2.06 7.67 2.22 7.48 2.36
20 8.29 2.12 8.09 2.30 7.87 2.48

*

the above chart includes the weighted deicing infleuence.

LEGEND

TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OU – Outdoor

5.5 Capacity Correction Factor Due to Tubing Length

5.5.1 Cooling

TOTAL TUBING LENGTH

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

3m

7.5m

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

1.04

1

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

*

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

5-7

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.6 Pressure Curves.

5.6.1 Cooling.

5-8

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.6.2 Heating.

5-9

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.7

DELTA24 / OU7- 24, DELTA24 / OU7-24Z 1PH/3PH R410A

5.7.1 Cooling Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

ENTERING AIR

DB OU COIL (°C)

DATA

ENTERING AIR WB/DB ID COIL ( °C)

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

15

(1)

TC

7.14 7.39 7.57 7.74 7.86

SC

4.80 5.00 5.20 5.33 5.43

PI

1.59 1.59 1.59 1.60 1.61

20

(1)

TC

6.90 7.28 7.51 7.68 7.85

SC

4.70 4.96 5.17 5.31 5.41

PI

1.72 1.73 1.74 1.75 1.75

25

TC

6.53 7.05 7.42 7.64 7.83

SC

4.58 4.86 5.13 5.28 5.37

PI

1.86 1.88 1.89 1.90 1.91

30

TC

6.11 6.65 7.19 7.44 7.66

SC

4.44 4.72 5.02 5.16 5.26

PI

2.01 2.04

2.06

2.07 2.09

35

TC

5.66 6.14

6.77

7.11 7.45

SC

4.22 4.52 4.90 5.04 5.14

PI

2.17 2.20

2.24

2.26 2.27

40

TC

5.14 5.60

6.11

6.68 7.02

SC

3.98 4.28 4.64 4.78 4.88

PI

2.34 2.37 2.41 2.44 2.47

46

TC

4.46 4.88 5.37 5.93 6.39

SC

3.66 3.93 4.23 4.37 4.47

PI

2.55 2.59 2.65 2.69 2.72

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
OU – Outdoor

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

conditions, refer to Optional Accessories (Chapter 15).

5-10

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.7.2 Heating Mode at 7.5m Tubing Connection.

230V : Indoor Fan at High Speed.

ENTERING AIR DB ID COIL ( °C)

15 20 25

ENTERING AIR

WB OU COIL ( °C)

TH PI TH PI TH PI

-10 3.72 1.88 3.58 2.00 3.43 2.10

-7 4.00 1.93 3.86 2.03 3.72 2.14

-2 4.25 1.95 4.11 2.07 3.96 2.19
2 5.17 2.04

4.96 2.17

4.74 2.30

6 7.29 2.20 7.08 2.35 6.83 2.50

10 7.93 2.32

7.72 2.48

7.50 2.65
15 8.57 2.42 8.35 2.61 8.14 2.77
20 9.03 2.49 8.81 2.70 8.57 2.91

*

the above chart includes the weighted deicing infleuence.

LEGEND

TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (

o

C)

DB – Dry Bulb Temp., (

o

C)
ID – Indoor
OU – Outdoor

5.8 Capacity Correction Factor Due to Tubing Length

5.8.1 Cooling

TOTAL TUBING LENGTH

3m

7.5m

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

1.01

1

0.980 0.970 0.960 --- --- --- ---

*

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

5.8.2 Heating

TOTAL TUBING LENGTH

3m

7.5m

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

1.02

1

0.990 0.990 0.980 --- --- --- ---

*

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

5-11

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.9 Pressure Curves.

5.9.1 Cooling.

Suction Pressure VS.Outdoor Temp

5

6

7

8

9

10

11

12

15 20 25 30 35 40 46

Outdoor Temp.(DB oC )

Suction Pressure (Bar[g])

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

Discharge Pressure VS.Outdoor Temp

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 (Barg])

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

5-12

PERFORMANCE DATA & PRESSURE CURVES

SM DELTA 1-E.0 GB

5.9.2 Heating.

Suction Pressure VS.Outdoor Temp

3

4

5

6

7

8

9

10

11

12

-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

14

16

18

20

22

24

26

28

30

32

34

36

38

40

-10-5 0 5 101520

Outdoor Temp.( WB oC )

Discharge Pressure(Bar[g])

25 DB (ºC)

20 DB (ºC)

15 DB (ºC)

6-1

SOUND LEVEL CHARACTERISTICS

SM DELTA 1-E.0 GB

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

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

DELTA 24

DELTA 18 DELTA 21

Figure 1

6-2

SOUND LEVEL CHARACTERISTICS

SM DELTA 1-E.0 GB

6.3 Outdoor units

6.4 Sound Pressure Level Spectrum (Measured as Figure 2)

GC 18 Cooling GC 18 Heating

GC 22 Cooling GC 22 Heating

Mic.

Unit

Ground

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

Figure 2

6-3

SOUND LEVEL CHARACTERISTICS

SM DELTA 1-E.0 GB

Sound Pressure Level Spectrum (Measured as Figure 2)

OU7- 24 Z Cooling OU7- 24Z Heating

OU7- 24 Cooling OU7- 24 Heating

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

7-1

ELECTRICAL DATA

SM DELTA 1-E.0 GB

7. ELECTRICAL DATA

7.1 Single Phase Units

MODEL DELTA 18 DELTA 21/24 DELTA 21/24

Power Supply

To indoor To Outdoor To Outdoor

1PH-230V-50Hz 1PH-230V-50Hz 3PH-400V-50Hz

Max Current, A 11.1 14 3×6

Circuit Breaker,A 15 20 3×10

Power Supply Wiring No. X
Cross Section mm

2

3×1.5 mm

2

3×2.5 mm

2

5×1.5 mm

2

Interconnecting Cable RC
Model No. X Cross Section mm

2

5×1.5 mm2 + 2×0.5 mm2

(OCT senser)

6×1.5 mm2 + 2×0.5 mm2

(OCT senser)

6×1.5 mm2 + 2×0.5 mm2

(OCT senser)

Interconnecting Cable ST
Model No. X Cross Section mm

2

4×1.5 mm

2

5×1.5 mm2 + 2×0.5 mm

2

5×1.5 mm2 + 2×0.5 mm2

(OCT senser)

NOTE

Power wiring cord should comply with local lows and electrical
regulations requirements.