Page 1
Delta DCI Series
T
CONTENTS
Indoor Units Outdoor Units
Delta 25 DCR 25 Z
Delta 35 DCR 35 Z
REFRIGERANT
REFRIGERANT
REFRIGERAN
SM DELTAZ 1-E.0 GB
R410A
HEAT PUMP
NOVEMBER – 2008
Page 2
LIST OF EFFECTIVE PAGES
CONTENTS
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 ........ 20 November 2008
Total number of pages in this publication is 70 consisting of the following:
Page
No.
Title ....................... 0
A ........................... 0
i ............................. 0
1-1 - 1-3 ................ 0
2-1 - 2-4 ................ 0
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9-1 ........................ 0
10-1 ...................... 0
11-1-11-14 ............. 0
12-1-12-7 .............. 0
13-1-13-11 ............ 0
Appendix -A ...........0
Revision
No. #
Page
No.
Revision
No. #
Page
No.
Revision
No. #
A
• Zero in this column indicates an original page.
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TABLE OF CONTENTS
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. REFRIGERATION DIAGRAMS .............................................................................9-1
10. TUBING CONNECTIONS ......................................................................................10-1
11. CONTROL SYSTEM .............................................................................................11-1
12. TROUBLESHOOTING ..........................................................................................12-1
13. EXPLODED VIEWS AND SPARE PARTS LISTS .................................................13-1
14. APPENDIX A .........................................................................................................14-1
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1. INTRODUCTION
CONTENTS
1.1 General
The new Delta DC Inverter split wall mounted series comprise RC (heat pump) models,
as follows:
● Delta 25
● Delta 35
The indoor Delta units are available as LED display types only, featuring esthetic design,
compact dimensions, and low noise operation.
1.2 Main Features
The Delta series benefits from the most advanced innovations, namely:
INTRODUCTION
DC Inverter Technology
●
● R410A
● Microprocessor control.
● Infrared remote control with liquid crystal display.
● 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.
● Pre-Charged units up to the max allowing tubing distance.
● Heating operation at outdoor temperature down to -15ºC
● Advanced test and diagnostics mode.
● M2L diagnostics softwear cable port (for PC)
● 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.
● Easy installation and service.
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Page 5
INTRODUCTION
CONTENTS
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.
● Variable Speed motor (PG).
● Advanced electronic control box assembly.
● Interconnecting wiring terminal block.
● Mounting plate
.
1.4 Filtration
The Delta series presents several types of air filters:
● Easily accessible, and re-usable pre-filters (mesh).
● Pre-charged electrostatic filter (optional).
● Active carbon 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.
1-2
It includes :
● Compressor mounted in a soundproofed component.
Single DC Rotary ─ For DCR 25Z, DCR 35Z.
● Axial fan.
● Outdoor coil with hydrophilic louver fins.
● Outlet air fan grill.
● Display (3 LED’s).
● 2 speed AC motor.
SM DELTAZ 1-E.0 GB
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1.7 Tubing Connections
CONTENTS
Flare type interconnecting tubing to be produced on site.
For further details please refer to the Installation Manual, Outdoor Chapter 9.
1.8 Inbox Documentation
Each unit is supplied with its own installation and operation manuals, one simly remote
control manual.
1.9 Matching Table
OUTDOOR UNITS
INTRODUCTION
INDOOR UNITS
MODEL REFR” Delta 25 Delta 35
DCR 25Z R410A
DCR 35Z R410A
√
√
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2. PRODUCT DATA SHEET
CONTENTS
2.1 Delta 25 / DCR 25Z R410A
PRODUCT DATA SHEET
Model Indoor Unit
Model Outdoor Unit
DELTA 25 DCI
DCR 25 Z R410A
Installation Method of Pipe Flared
Characteristics Units Cooling Heating
Capacity
Power input
(4)
(4)
EER (Cooling) or COP(Heating)
(4)
Btu/hr 8530(4090-10240) 8530(3410-10910)
kW 2.5(1.2-3.0) 2.5(1.0-3.2)
kW 0.78 0.69
W/W 3.21 3.61
Energy efficiency class A A
Power supply V/Ph/Hz 220-240V ~1Ph 50/60Hz
Rated current A 3.5 3.1
Starting current A 10.5
Circuit breaker rating A 10
Fan type & quantity Crossflow x 1
Fan speeds H/M/L RPM 1200/1050/850
Air flow
(1)
H/M/L m3/hr 420/350/270
External static pressure Min-Max Pa 0
Sound power level
(2)
Sound pressure level
(3)
H/M/L dB(A) 54/50/47
H/M/L dB(A) 39/35/32
Moisture removal l/hr 1
Condenstate drain tube I.D mm 16
INDOOR
Dimensions WxHxD mm 680x185x250
Weight kg 7
Package dimensions WxHxD mm 740x265x320
Packaged weight kg 10
Units per pallet units 36 units per pallet
Stacking height units 9 levels
Refrigerant control Capillary
Compressor type,model Rotary, TOSHIBA DA89X1C-20FZ3
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 830
Air flow H/L m3/hr 1460
Sound power level H/L dB(A) 65
Sound pressure level
(3)
H/L dB(A) 55
Dimensions WxHxD mm 760x245x545
Weight kg 31
Package dimensions WxHxD mm 880x310x610
Packaged weight kg 33
Units per pallet Units 12 units per pallet
OUTDOOR
Stacking height units 3 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 0.85kg/7.5m
Additional charge per 1 meter g/m L≤10m:+0g 10<L≤15m:+200g
Liquid line In.(mm) 1/4"(6.35)
Connections between
units
Suction line In.(mm) 3/8"(9.53)
Max.tubing length m. Max.15
Max.height difference m. Max. 10
Operation control type Remote control
Heating elements kW
Others
(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).
SM DELTAZ 1-E.0 GB
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Page 8
PRODUCT DATA SHEET
CONTENTS
2.2 Delta 35 / DCR 35 Z R410A
Model Indoor Unit
Model Outdoor Unit
DELTA 35 DCI
DCR 35 Z R410A
Installation Method of Pipe Flared
Characteristics Units Cooling Heating
Capacity
Power input
(4)
(4)
EER (Cooling) or COP(Heating)
(4)
Btu/hr 11940(4100-13640) 11940(4100-13330)
kW 3.5(1.2-4.0) 3.5(1.2-3.9)
kW 1.09 0.97
W/W 3.21 3.61
Energy efficiency class A A
Power supply V/Ph/Hz 220-240V ~1Ph 50/60Hz
Rated current A 4.9 4.3
Starting current A 10.5
Circuit breaker rating A 15
Fan type & quantity Crossflow x 1
Fan speeds H/M/L RPM 1200/1000/850
Air flow
(1)
H/M/L m3/hr 550/450/350
External static pressure Min-Max Pa 0
Sound power level
(2)
Sound pressure level
(3)
H/M/L dB(A) 56/50/46
H/M/L dB(A) 39/33/29
Moisture removal l/hr 1.5
Condenstate drain tube I.D mm 16
INDOOR
Dimensions WxHxD mm 840x185x250
Weight kg 8
Package dimensions WxHxD mm 930x265x320
Packaged weight kg 11
Units per pallet units 36 units per pallet
Stacking height units 9 levels
Refrigerant control Capillary
Compressor type,model Rotary, TOSHIBA DA108X1C-20FZ3
Fan type & quantity Propeller(direct) x 1
Fan speeds H/L RPM 830
Air flow H/L m3/hr 1460
Sound power level H/L dB(A) 66
Sound pressure level
(3)
H/L dB(A) 56
Dimensions WxHxD mm 760x245x545
Weight kg 32
Package dimensions WxHxD mm 880x310x610
Packaged weight kg 34
Units per pallet Units 12 units per pallet
OUTDOOR
Stacking height units 3 levels
Refrigerant type R410A
Refrigerant chargless distance kg/m 1.0kg/7.5m
Additional charge per 1 meter g/m L≤10m:+0g 10L≤20m :+200g
Liquid line In.(mm) 1/4"(6.35)
Connections between units
Suction line In.(mm) 3/8"(9.53)
Max.tubing length m. Max.15
Max.height difference m. Max. 10
Operation control type Remote control
Heating elements kW No
Others
(1)
(2)
(3)
(4)
2-2
Airflow in ducted units; at nominal external static pressure.
Sound power in ducted units is measured at air discharge.
Sound pressure level measured at 1-meter distance from unit.
Rating conditions in accordance to ISO 5151 and ISO 13253 (for ducted units).
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3. RATING CONDITIONS
CONTENTS
Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units).
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
RATING CONDITIONS
Cooling
Heating
Upper limit
Lower limit
Upper limit
Lower limit
Voltage
Indoor Outdoor
32oC DB 23oC WB 46oC DB
21oC DB 15oC WB 0oC DB
27oC DB 24oC DB 18oC WB
10oC DB -15oC DB -16oC WB
198 – 264 V
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4. OUTLINE DIMENSIONS
CONTENTS
4.1 Indoor Unit: Delta 25 DCI
OUTLINE DIMENSIONS
4.2
Indoor Unit: Delta 35 DCI
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OUTLINE DIMENSIONS
CONTENTS
4.3 Outdoor Unit: DCR 25 Z, DCR 35 Z DCI
AIR INTAKE
AIR OUTLET
4-2
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Page 12
PERFORMANCE DATA & PRESSURE CURVES
CONTENTS
5. PERFORMANCE DATA
5.1 Delta 25 / DCR 25 Z R410A
5.1.1 Cooling Capacity (kW) – Run Mode
230[V] : Indoor Fan at High Speed.
OD COIL
ENTERING AIR DB
TEMPERATURE [
0 - 20
(protection range)
25
30
35
40
46
o
ID COIL ENTERING AIR DB/WB TEMPERATURE [
o
DATA
C]
22/15 24/17 27/19 29/21 32/23
C]
TC 80 - 110 % of nominal
SC 80 - 105 % of nominal
PI
TC
2.41 2.57 2.73 2.89 3.05
25 - 50 % of nominal
SC 1.67 1.71 1.74 1.77 1.81
PI 0.59 0.60 0.61 0.62 0.63
TC 2.30 2.46 2.62 2.77 2.93
SC 1.63 1.67 1.70 1.73 1.77
PI 0.66 0.67
TC 2.18 2.34
0.68
2.50
0.69 0.70
2.66 2.82
SC 1.59 1.63 1.77 1.69 1.73
PI 0.73 0.74
TC 2.07 2.23
0.78
2.39
0.76 0.77
2.54 2.70
SC 1.55 1.59 1.62 1.65 1.69
PI 0.80 0.81 0.82 0.83 0.84
TC 1.93 2.09 2.25 2.41 2.56
SC 1.50 1.54 1.57 1.61 1.64
PI 0.88 0.89 0.90 0.91 0.92
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
o
WB – Wet Bulb Temp., (
DB – Dry Bulb Temp., (
o
C)
C)
ID – Indoor
OD – Outdoor
5.1.2 Capacity Correction Factors
Cooling Capacity Ratio Vs. Outdoor Temperature
1.20
1.10
1.00
0.90
0.80
0.70
Capacit y Ratio
0.60
0.50
20 25 30 35 40 45
Outdoor Temperature [deg C]
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PERFORMANCE DATA & PRESSURE CURVES
CONTENTS
5.1.3 Heating Capacity (kW) - Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB TEMPERATURE [oC]
OD COIL ENTERING
AIR DB/WB
TEMPERATURE [
o
DATA
C]
15 20 25
-15/-16
-10/-12
-7/-8
-1/-2
2/1
7/6
10/9
15/12
15-24
(Protection Range)
TC 1.78 1.66 1.53
PI 0.49 0.54 0.59
TC 1.98 1.86 1.73
PI 0.59 0.64 0.69
TC 2.14 2.01 1.89
PI 0.67 0.72 0.77
TC 2.21 2.09 1.96
PI 0.71 0.76 0.81
TC 2.26 2.14 2.01
PI 0.73
TC 2.92
PI 0.77
TC 3.09
PI 0.82 0.87 0.92
TC 3.25 3.12 3.00
PI 0.86 0.91 0.96
TC 85 - 105 % of nominal
PI 80 - 120 % of nominal
LEGEND
TC – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU – Outdoor
0.78
2.50
0.69
2.96
0.83
2.68
0.87
2.84
5.1.4 Capacity Correction Factors
5-2
Heating Capacity Ratio Vs. Outdoor Temperature
1.20
1.10
1.00
0.90
0.80
0.70
Capacit y Ration
0.60
0.50
-15 -10 -5 0 5 10 15
Outdoor WB Temperature [deg C]
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PERFORMANCE DATA & PRESSURE CURVES
CONTENTS
5.2 Delta 35 / DCR 35 Z R410A
5.2.1 Cooling Capacity (kW) – Run Mode
230[V] : Indoor Fan at High Speed.
OD COIL
ENTERING AIR DB
TEMPERATURE [
-10 - 20
(protection range)
25
30
35
40
46
o
ID COIL ENTERING AIR DB/WB TEMPERATURE [
o
DATA
C]
22/15 24/17 27/19 29/21 32/23
C]
TC 80 - 110 % of nominal
SC 80 - 105 % of nominal
PI
TC
3.38 3.60 3.82 4.04 4.26
25 - 50 % of nominal
SC 2.54 2.59 2.64 2.69 2.74
PI 0.81 0.83 0.84 0.86 0.87
TC 3.22 3.44 3.66 3.88 4.10
SC 2.48 2.53 2.58 2.63 2.68
PI 0.90 0.92
TC 3.06 3.28
0.94
3.50
0.95 0.97
3.72 3.94
SC 2.42 2.47 2.58 2.57 2.62
PI 1.00 1.01
TC 2.90 3.12
1.09
3.34
1.05 1.06
3.56 3.78
SC 2.36 2.41 2.46 2.51 2.56
PI 1.09 1.11 1.12 1.14 1.16
TC 2.70 2.92 3.15 3.37 3.59
SC 2.28 2.34 2.39 2.44 2.49
PI 1.21 1.22 1.24 1.25 1.27
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
5.2.2 Capacity Correction Factors
Cooling Capacity Ratio Vs. Outdoor Temperature
1.20
1.10
1.00
0.90
0.80
0.70
Capacit y Ratio
0.60
0.50
20 25 30 35 40 45
Outdoor Temperature [deg C]
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5-3
Page 15
PERFORMANCE DATA & PRESSURE CURVES
CONTENTS
5.2.3 Heating Capacity (kW) - Run Mode
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB TEMPERATURE [oC]
OD COIL
ENTERING
AIR DB/WB
TEMPERATURE
o
C]
[
DATA
15 20 25
-15/-16
-10/-12
-7/-8
-1/-2
2/1
7/6
10/9
15/12
15-24
(Protection Range)
TC
PI 0.63 0.69 0.76
TC 2.55 2.39 2.23
PI 0.76 0.82 0.89
TC 2.75 2.58 2.42
PI 0.86 0.92 0.98
TC 2.84 2.68 2.52
PI 0.91 0.97 1.03
TC 2.91 2.75 2.59
PI 0.94
TC 3.76
PI 0.99
TC 3.97
PI 1.04 1.11 1.17
TC 4.17 4.01 3.85
PI
TC
PI 80 - 120 % of nominal
LEGEND
TC – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU – Outdoor
2.29 2.13 1.97
1.00
3.50
0.97
3.81
1.07
3.44
1.11
3.65
1.10 1.17 1.23
85 - 105 % of nominal
5.2.4 Capacity Correction Factors
5-4
Heating Capacity Ratio Vs. Outdoor Temperature
1.20
1.10
1.00
0.90
0.80
0.70
Capacit y Ration
0.60
0.50
-15 -10 -5 0 5 10 15
Outdoor WB Temperature [deg C]
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PERFORMANCE DATA & PRESSURE CURVES
CONTENTS
5.3 Capacity Correction Factor Due to Tubing Length
5.3.1 Delta 25 DCI : Cooling
1.025
1.00
0.95
0.90
0.85
Capacity Ratio
0.80
0.75
3 5 7 9 11 13 15
Tubing Length[m ]
5.3.2 Heating
1.025
1.00
0.95
0.90
0.85
Capacity Ratio
0.80
0.75
3 5 7 9 11 13 15
Tubing Length[m ]
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Page 17
PERFORMANCE DATA & PRESSURE CURVES
CONTENTS
5.3.3 Delta 35 DCI : Cooling
1.025
1.00
0.98
0.96
0.94
0.92
0.90
0.88
Capacity Ratio
0.84
0.80
3 5 7 9 11 13 15
Tubing Length[m ]
5.3.4 Heating
1.01
1.00
0.99
0.98
0.97
0.96
0.95
0.94
Capacity Ratio
0.92
0.90
3 5 7 9 11 13 15
Tubing Length[m ]
5-6
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Page 18
5.4 PRESSURE CURVES
CONTENTS
5.4.1 DELTA 25 / DCR 25 Z R410A
5.4.1.1 Cooling => Test Mode
Suction Pressure VS.Outdoor Temp.
1200
1100
1000
900
800
PERFORMANCE DATA & PRESSURE CURVES
Suction Pressure[kPa]
700
600
500
400
10 15 20 25 30 35 40 45
Discharge Pressure VS. Outdoor Temp.
4000
3750
3500
3250
3000
2750
2500
2250
2000
1750
Discharge Pressure [kPa]
1500
1250
1000
10 15 20 25 30 35 40 45
Outdoor DB Temperature
Outdoor DB Temperature
21/15 DB/WB
24/17 DB/WB
27/19 DB/WB
29/21 DB/WB
32/23 DB/WB
21/15 DB/WB
24/17 DB/WB
27/19 DB/WB
29/21 DB/WB
32/23 DB/WB
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PERFORMANCE DATA & PRESSURE CURVES
CONTENTS
5.4.1.2 Heating => Test Mode
Suction Pressure VS. Outdoor Temp.
1000
900
800
700
600
500
400
Suction Pressure [kPa]
300
15 DB
20 DB
25 DB
3350
3100
2850
2600
2350
2100
1850
200
5101505-01-51-
Outdoor WB Temperature
Discharge Pressure VS. Outdoor Temp.
15 DB
20 DB
25 DB
5-8
1600
1350
1100
-15 -10 -5 0 5 10 15
Outdoor WB Temperature
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5.4.2 DELTA 35 / DCR 35 Z R410A
CONTENTS
5.4.2.1 Cooling => Test Mode
Suction Pressure VS. Outdoor Te mp.
1200
11 0 0
1000
900
800
PERFORMANCE DATA & PRESSURE CURVES
700
600
Suction Pressure [kPa]
500
400
10 15 20 25 30 35 40 45
4000
3750
3500
3250
3000
2750
2500
2250
2000
1750
1500
Discharge Pressure [kPa]
1250
1000
10 15 20 25 30 35 40 45
21/15 DB/WB
24/17 DB/WB
27/19 DB/WB
29/21 DB/WB
32/23 DB/WB
Outdoor DB Temperature
Discharge Pressure VS. Outdoor Te m p.
21/15 DB/WB
24/17 DB/WB
27/19 DB/WB
29/21 DB/WB
32/23 DB/WB
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Outdoor DB Temperature
5-9
Page 21
PERFORMANCE DATA & PRESSURE CURVES
CONTENTS
5.4.2.2 Heating =>Test Mode
Suction Pressure VS. Outdoor Temp.
1000
900
800
700
600
500
Suction Pressure [kPa]
400
300
15 DB
20 DB
25 DB
200
Discharge Pressure [kPa]
Outdoor WB Temperature
Discharge Pressure VS. Outdoor Temp.
4000
3750
3500
3250
3000
2750
2500
2250
2000
1750
1500
1250
-15 -10 -5 0 5 10 15
5101505-01-51-
15 DB
20 DB
25 DB
5-10
Outdoor WB Temperature
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SOUND LEVEL CHARACTERISTICS
CONTENTS
6. SOUND LEVEL CHARACTERISTICS
6.1 Sound Pressure Level
Figure 1. Wall Mounted Figure 2. Floor Mounted
Figure 3. Ducted Figure 4. Cassette
6.2 Sound Pressure Level Spectrum (Measured as Figure 1)
Delta 25 Delta 35
-70NC
-60NC
-50NC
-40NC
-30NC
APPROXIMATE
THRESHOLD OF
MICRO BAR0.002 dB re , OCTAVE BAND SOUND PRESSURE LEVEL
HEARING FOR
CONTINUOUS
NOISE
-20NC
MICRO BAR0.002 dB re , OCTAVE BAND SOUND PRESSURE LEVEL
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
-70NC
-60NC
-50NC
-40NC
-30NC
-20NC
SM DELTAZ 1-E.0 GB
OCTAVE BAND CENTER FREQUENCIES, [Hz]
FAN SPEED LINE
HI
ME
LO
OCTAVE BAND CENTER FRQUENCIES, [Hz]
6-1
Page 23
SOUND LEVEL CHARACTERISTICS
CONTENTS
6.3 Outdoor units
Microphone Distance from Unit
6.4 Sound Pressure Level Spectrum (Measured as Figure 5)
DCR 25 Z Cooling DCR 25 Z Heating
APPROXIMATE
THRESHOLD OF
MICRO BAR0.002 dB re , OCTAVE BAND SOUND PRESSURE LEVEL
HEARING FOR
CONTINUOUS
NOISE
Hz, BAND CENTER FREQUENCIES
DCR 35 Z Cooling DCR 35 Z Heating
-70NC
-60NC
-50NC
-40NC
-30NC
-20NC
-70NC
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
MICRO BAR0.002 dB re , OCTAVE BAND SOUND PRESSURE LEVEL
NOISE
Hz, BAND CENTER FREQUENCIES
-70NC
-60NC
-50NC
-40NC
-30NC
-20NC
-70NC
6-2
APPROXIMATE
THRESHOLD OF
MICRO BAR0.002 dB re , OCTAVE BAND SOUND PRESSURE LEVEL
HEARING FOR
CONTINUOUS
NOISE
Hz, BAND CENTER FREQUENCIES
-60NC
-50NC
-40NC
-30NC
-20NC
APPROXIMATE
THRESHOLD OF
MICRO BAR0.002 dB re , OCTAVE BAND SOUND PRESSURE LEVEL
HEARING FOR
CONTINUOUS
NOISE
Hz, BAND CENTER FREQUENCIES
SM DELTAZ 1-E.0 GB
-60NC
-50NC
-40NC
-30NC
-20NC
Page 24
7. ELECTRICAL DATA
CONTENTS
7.1 Single Phase Units
MODEL Delta 25 Delta 35
Power Supply
Max Current, A 6.3 7.5
Circuit Breaker,A 10 15
Power Supply Wiring No. X
Cross Section, mm
Interconnecting Cable RC
Model No. X Cross Section, mm
Power wiring cord should comply with local lows and electrical regulations
requirements
2
2
ELECTRICAL DATA
To indoor To indoor
1PH,220-240V,50Hz 1PH,220-240V,50Hz
3x1.0 mm
4x1.0 mm
NOTE
2
2
3x1.5 mm
4x1.5 mm
2
2
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8. WIRING DIAGRAMS
CONTENTS
8.1 Delta 25 / DCR 25 Z, Delta 35 / DCR 35 Z
WIRING DIAGRAMS
M1
Step motor
Display
ICT
RAT
red
6
white
5
black
4
213
brown
blue
gray
1uF 450V
capacitor
IFAN
INDOOR UNIT CIRCUIT DIAGRAM
6
45
3
FLASH
2
1
345
2
P6(White)
1
P9
PH-12
P5(white)
2112
red)
P4
P20
P13
P2
MEGATOOL
4
3
22
P7(White)
1
J4
4
J3
3
J2
J1
1
JUMPER
P8
P1P10
P22
Note: The dashed part is optional
N
/
C
Brown
Y/G
Blue
~230V 50Hz
Power supply
Indoor unit controller PCB
P14P3
P19
Red
Blue
Brown
gray
P16 P11P15
To metal sheet
Y/G
OCT
OAT CTT
OMT
FAN
CAP
2uF/450V
YEL
GRN
OFAN
VALV E
REVERSE
BLK
BRN
COMP
OUTDOOR UNIT CIRCUIT DIAGRAM
RED
BLK
RED
BLUE
P14
P15
34 3
P2
212121
P1
NHL
2
P4
1
W
P11
V
3P9P
U
1
32
P7
P9
6587 4
6
5
4
3
2
1
EEV
Optional
ODU CONTROLLER PCBA
FUSE
P17
COM
L
N
N
4/L
5/C
FERRITE CORE
RED
BROWN
BLUE
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9. REFRIGERATION DIAGRAMS
CONTENTS
9.1 Heat Pump Models
9.1.1 Delta 25 / DCR 25 Z DCI
REFRIGERATION DIAGRAMS
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Page 27
REFRIGERATION DIAGRAMS
CONTENTS
9.1.2 Delta 35 / DCR 35 Z DCI
9-2
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Page 28
10. TUBING CONNECTIONS
CONTENTS
TUBING CONNECTIONS
TUBE (Inch)
¼” ⅜”½”⅝”¾”
TORQUE (Nm)
Flare Nuts 11-13 40-45 60-65 70-75 80-85
Valve Cap 13-20 13-20 18-25 18-25 40-50
Service Port Cap 11-13 11-13 11-13 11-13 11-13
1. Valve Protection Cap-end
2. Refrigerant Valve Port (use Allen wrench to open/close)
3. Valve Protection Cap
4. Refrigerant Valve
5. Service Port Cap
6. Flare Nut
7. Unit Back Side
8. Copper Tube
When the outdoor unit is installed above the indoor unit an oil trap is required every 5m along the suction
line at the lowest point of the riser. Incase the indoor unit is installed above the outdoor, no trap is
required.
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CONTROL SYSTEM
CONTENTS
11. CONTROL SYSTEM
11.1 Electronic Control
11.1.1 General Functions and Operating Rules
The DCI software is fully parametric.All the model dependent parameters are shown in Blue color
and with Italic style [parameter].
The parameters values are given in the last section of this control logic chapter of the service
manual.
11.1.2 System Operation Concept
The control function is divided between indoor and outdoor unit controllers. Indoor unit is the system
‘Master’, requesting the outdoor unit for cooling/heating capacity supply. The outdoor unit is the
system ‘Slave’ and it must supply the required capacity unless it enters into a protection mode
avoiding it from supplying the requested capacity.
The capacity request is transferred via indoor to outdoor communication, and is represented
by a parameter called ‘NLOAD’. NLOAD is an integer number with values between 0 and 127,
and it represents the heat or cool load felt by the indoor unit.
11.1.3 Compressor Frequency Control (NLOAD setting)
11.1.3.1 NLOAD setting
The NLOAD setting is done by the indoor unit controller, based on a PI control scheme.
The actual NLOAD to be sent to the outdoor unit controller, is based on the preliminary LOAD
calculation, the indoor fan speed, and the power shedding function.
NLOAD limits as a function of indoor fan speed:
Indoor Fan Speed Maximum NLOAD Cooling Maximum NLOAD Heating
Low Max NLOADIF1C 127
Medium Max NLOADIF2C 127
High Max NLOADIF3C 127
Turbo Max NLOADIF4C 127
Auto Max NLOADIF5C 127
11.1.3.2 Target Frequency Setting
The compressor target frequency is set by the following table, according to the NLOAD number
received from the indoor unit.
NLOAD Target Frequency [Hz]
00
SM DELTAZ 1-E.0 GB
0<NLOAD≤MinFreq MinFreq
MinFreqMaxFreq
>MinFreq
MinFreqneLoadDeadZo
Definitions
Cool Heat
MinFreq MinFreqC MinFreqH
MaxFreq MaxFreqC MaxFreqH
LoadDeadZone LoadDeadZoneC LoadDeadZoneH
MinFreqMinFreq}ne)LoadDeadZo(NLOAD,{min
11-1
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CONTROL SYSTEM
CONTENTS
11.1.3.3 Frequency Changes Control
Frequency change rate is 1 Hz/sec.
11.1.3.4 Compressor Starting Control
Frequency
Step 3
Step 2
Step 1
1
Minute
1
Minute
Time
Min 10 Minutes
11.1.3.5 Minimum On and Off Time
3 minutes.
11.1.4 Indoor Fan Control
10 Indoor fan speeds are determined for each model. 5 speeds for cool/dry/fan modes and 5 speeds
for heat mode.
When user sets the indoor fan speed to a fixed speed (Low/ Medium/ High), unit will operate constantly
at set speed.
When Auto Fan is selected, indoor unit controller can operate in all speeds. The actual speed is set
according to the cool/heat load.
11.1.4.1 Turbo Speed
The Turbo speed is activated during the first 30 minutes of unit operation when auto fan speed is
selected and under the following conditions:
Difference between set point and actual room temperature is bigger then 3 degrees.
Room temperature > 22 for cooling, or < 25 for heating.
11.1.5 Heating Element Control
Heating element can be started if LOAD > 0.8 * MaximumNLOAD AND Indoor Coil temperature
< 45.
The heating element will be stopped when LOAD < 0.5 * MaximumNLOAD OR if Indoor Coil
temperature > 50.
11.1.6 Outdoor Fan Control
11.1.6.1 The following are the speeds types (General Rules):
11-2
MCU
High Speed Output
Low Speed Output
Relay
OFAN
motor
Triac
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CONTROL SYSTEM
CONTENTS
Speed Controlled by
High Relay
Low Triac (40% to 95% effective voltage)
11.1.6.2 OFAN Operation in Cooling Mode
With keeping the OFAN general rules above in the highest priority, the operation of the OFAN will be operating
as the following:
OAT
Initial
OAT
Initial
>20
(or Faulty)
OAT
≤20 Low(Triac)- Open Loop
Initial
0 – 3min > 3min
High(Relay)
Time After Compressor start up (minutes)
First Time enters the
default is the l ast state
High (Relay)
Low (Triac)- By CDT
18 21
Note : OAT faulty , use Hi gh Speed
OAT (cur r ent)
Note:
The OAT
value represents one OAT reading exactly at the moment start up (actual freq>0).
Initial
Low (Triac)- By OMT represents the operation of the Low Fan speed controlled by Triac
according to OMT sensor.
11.1.6.3 OFAN Operation in Heating Mode
Except to the “General rules”, the outdoor fan will always be running at High speed during heating
operation mode.
11.1.7 EEV (electronic Expansion valve) Control
EEV opening is defined as EEV = EEVOL + EEV
EEV
is the initial EEV opening as a function of the compressor frequency, operation
OL
mode, unit model and capacity.
EEV
is a correction value for the EEV opening that is based on the compressor
CV
temperature.
During the first 5 minutes of compressor operation EEV
Once the first 5 minutes are over, the correction value is calculated as follow: EEV
= EEV
EEV
(n-1) + EEV
CV
is the correction based on the compressor temperature. A target compressor
CTT
CTT
temperature is set depending on frequency and outdoor air temperature, and the actual
compressor temperature is compared to the target temperature to set the required
correction to the EEV opening.
CV
CV
= 0.
CV
(n)
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CONTROL SYSTEM
CONTENTS
11.1.8 Reversing Valve (RV) Control
Reversing valve is on in heat mode.
Switching of RV state is done only after compressor is off for over 3 minutes.
11.2 Fan Mode
In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.
In AutoFan user setting, fan speed will be adjusted automatically according to the difference
between actual room temperature and user set point temperature.
11.3 Cool Mode
NLOAD is calculated according to the difference between actual room temperature and user set
point temperature by PI control.
In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.
In AutoFan user setting, fan speed will be adjusted automatically according to the calculated
NLOAD.
11.4 Heat Mode
NLOAD is calculated according to the difference between actual room temperature and user set
point temperature by PI control.
In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.
In AutoFan user setting, fan speed will be adjusted automatically according to the calculated
NLOAD.
11.4.1 Temperature Compensation
4 degrees are reduced from RT sensor temperature reading (excluding I-Feel mode), to
compensate for temperature difference between high and low areas in the heated room, and due
to coil heat radiation on RT sensor.
11.4.2 Indoor Fan Control in Heat Mode
Indoor fan speed depends on the indoor coil temperature:
11.5 Auto Cool/Heat Mode
When in auto cool heat mode unit will automatically select between cool and heat mode according
to the difference between actual room temperature and user set point temperature (ΔT).
Unit will switch from cool to heat when compressor is off for 3 minutes, and ΔT < -3.
Unit will switch from heat to cool when compressor is off for 5 minutes, and ΔT < -3.
11-4
ICTST
ICTVL ICTT ICTHICTL
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CONTROL SYSTEM
CONTENTS
11.6 Dry Mode
As long as room temperature is higher then the set point, indoor fan will work in low speed and
compressor will work between 0 and MaxNLOADIF1C Hz.
When the room temperature is lower than the set point, compressor will be switched OFF and
indoor fan will cycle 3 minutes OFF, 1 minute ON.
11.7 Protections
There are 5 protection codes.
Normal (Norm) – unit operate normally.
Stop Rise (SR) – compressor frequency can not be raised but does not have to be decreased.
HzDown1 (D1) – Compressor frequency is reduced by Down1 Hz/min.
HzDown2 (D2) – Compressor frequency is reduced by Down2 Hz/min.
Stop Compressor (SC) – Compressor is stopped.
11.7.1 Indoor Coil Defrost Protection
ICT Trend
ICT
ICT < -2 SC SC SC SC SC
-2 ≤ ICT < 0 D1 D1 D2 D2 D2
0 ≤ ICT < 2 SR SR D1 D2 D2
2 ≤ ICT < 4 SR SR SR D1 D2
4 ≤ ICT < 6 Norm Norm SR SR D1
6 ≤ ICT < 8 Norm Norm Norm SR SR
8 ≤ ICT Normal
Fast
Increasing
Increasing No change Decreasing
Fast
Decreasing
11.7.2 Indoor Coil over Heating Protection
ICT
ICT > 55 SC SC SC SC SC
53 < ICT ≤ 55 D1 D1 D2 D2 D2
49 < ICT ≤ 53 SR SR D1 D2 D2
47 < ICT ≤ 49 SR SR SR D1 D2
45 < ICT ≤ 47 Norm Norm SR SR D1
43 < ICT ≤ 45 Norm Norm Norm SR SR
ICT ≤ 43 Normal
Fast
Decreasing
Decreasing No Change Increasing
ICT Trend
Fast
Increasing
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11-5
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CONTROL SYSTEM
CONTENTS
11.7.3 Compressor over Heating Protection
Compressor temperature can be in one of 5 control zones (4 in protection, and 1 normal),
according to the following chart.
CTT
Stop-Compresor
CTTOH4
CTTOH3
CTTOH2
CTTOH1
Control Status
P1 Norm SR
P2 D1 SR
P3 D2 D1
Stop Compressor SC
Compressor Temperature
Increases
P3
P2
P1
Normal
11.7.4 Compressor over Current Protection
CCR
Stop-Compresor
CCROC4
Else
CCROC3
CCROC2
CCROC1
HzDown2
HzDown1
Stop-Rise
Normal
11-6
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CONTROL SYSTEM
CONTENTS
11.7.5 Heat Sink Over Heating Protection
A new control status will be set according to the following graph every one-minute or whenever when
going up by the rows.
is the current reading of HST and HST
HST
n
is the last reading of HST.
n-1
HST
n
HST
> HSTOH5 SC SC SC SC SC
n
HSTOH4 ≤ HST
HSTOH3 ≤ HST
HSTOH2 ≤ HST
HSTOH1 ≤ HST
HST
(*) Normal (Norm) – No protection status is ON.
Stop-Rise (SR) – System is in protection.
HzDown1 (D1) - System is in protection.
HzDown2 (D2) - System is in protection.
< HSTOH5 D1 D1 D2 D2 D2
n
< HSTOH4 SR SR D1 D2 D2
n
< HSTOH3 SR SR SR D1 D1
n
< HSTOH2 Norm Norm Norm SR SR
n
< HSTOH1 Norm
n
<-1 -1 0 1 >1
HSTn-HST
n-1
11.7.6 Outdoor Coil Deicing Protection
11.7.6.1 Deicing Starting Conditions
Deicing operation will start when either one of the following conditions exist:
Case 1: OCT <-DST – AND TLD > DI
Case 2: OCT < OAT
Case 3: OCT <-1 AND TLD> 100 mnutes.
Case 4: OCT is Invalid AND TLD > DI
Case 5: Unit is just switched to STBY AND OCT <-DST
Case 6: NLOAD = 0 AND OCT <-DST
– 12 AND TLD > 30 minutes.
max
DST Calculation:
When OATmax >0 or OAT is invalid; then DST=8
When OATmax ≤0; then DST= round down (-0.8 * OATmax) + 8
OATmax calculation:
After compressor starts for 3 minutes, OATmax calculation is start.
The OATmax is the moving value of the Maximum OAT during the 1st 10mintues within last
30minutes
OCT – Outdoor Coil Temperature
OAT – Outdoor Air Temperature
TLD – Time from Last Deicing
DI – Deicing Interval (Time Interval Between Two Deicing)
Deicing interval time when compressor is first started in heat mode, is 10 minutes if OCT < -2, and
is 40 minutes in other cases.
Deicing interval time is changed (increased/ decreased in 10 minutes steps) as a function of
deicing time. If deicing time is shorter then former deicing time, the deicing interval time will be
increased. If deicing time is longer then former deicing time, the deicing interval time will be
decreased.
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CONTROL SYSTEM
CONTENTS
11.7.6.2 Deicing Protection Procedure
OCT
12
0
Threshold
COMP
RV
OFAN
EEV
ON
HEAT
COOL
ON
OFF
EEVDeicerOpen
Any
T1 T2
max. 12 minutes
DT
T3 T3
T1 = DEICT1, T2 = DEICT2, T3 = DEICT3
11.7.7 Condensate Water Over Flow Protection
T1
Each of the pins P1, P2, P3 can have two options:
1 – When it is shorted with P4
0 – When it is not shorted to P4
11.7.7.1 3 Levels Logic (used in floor/ceiling models)
11-8
P2 P3 Level
00 L0
10 L1
1 1 L2&3
01 L4
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Page 37
Water Level
CONTENTS
LEVEL4
LEVEL2&3
LEVEL1
Pump
NLOAD
CONTROL SYSTEM
ON
OFF
ANY
0
BLINK
OPER LED
NORMAL
11.7.7.2 1 Level Logic (used in all models except for floor/ceiling models)
P2 P3 Level
Don’t care 1 Normal
Don’t care 0 Overflow
Water Level
OPER
LED
Overflow
Normal
ON
OFF
BLINK
Overflow when
unit is ON
Overflow when
unit is OFF
SM DELTAZ 1-E.0 GB
NLOAD
PUMP
ANY
0
ON
OFF
NLOAD is
forced to 0
8 min 8 min
8 min
11-9
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CONTROL SYSTEM
CONTENTS
11.8 Indoor Unit Dry Contact
Indoor unit Dry contact has two alternative functions that are selected by J8.
Function Contact = Open Contact = Short
J8 = Open Presence Detector Connection No Limit Forced to STBY
J8 = Short Power Shedding Function No Limit Limit NLOAD
11.9 Operating the Unit from the Mode Button
Forced operation allows to start, stop and operate in Cooling or Heating, in pre-set temperature
according to the following table:
Forced operation Mode Pre-set Temperature
Cooling 20
Heating 28
0
C
0
C
11.10 On Unit Controls and Indicators
11.10.1 Indoor Unit Controller Controls and Indicators Foe All Models
The following is schematic drawing for the display:
STBY/OPER
Mode/Reset Button
Timer
Filter
Infra Red Receiver
11-10
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Page 39
1. Lights up when the Air Conditioner is connected to power and the
CONTENTS
STAND BY
INDICATOR
OPERATION INDICATOR
TIMER INDICATOR Lights up during Timer and Sleep operation.
FILTER INDICATOR Lights up when Air Filter needs to be cleaned.
mode is STBY.
2. Blinks for 3 seconds, when the system is switched to Heat Mode
by using the Mode/Reset Switch on the unit (the operation
indicator will be off during this blinking time).
1. Lights up during operation mode (except for item in STBY
indicator).
2. Blinks for 300 msec., to announce that a R/C infrared
signal has been received and stored.
3. Blinks continuously during protections (according to the relevant
spec section).
4. Blinks for 3 seconds when the system is switched to Cool Mode
by using the Mode/Reset Switch on the unit.
CONTROL SYSTEM
As long as the filter Led is off, the Mode/Reset button functions as Mode
switch. Once filter Led is on, the Mode/Reset button functions as Reset
switch.
Mode Function:
Every short pressing , the next operation mode is selected, in this order:
MODE / RESET BUTTON
SB → Cool Mode → Heat Mode → SB → …
In long pressing system enters diagnostic mode (refer to diagnostic
mode Sect.)
Reset Function:
For short pressing:
When Filter LED is on, it turns off the filter indicator.
Notes
1. Pressing time is defined as the time between press and release.
2. If pressing time is one second or less – press is considered as short pressing.
3. If pressing time is three seconds or longer – pressing is considered as long pressing. In
between, pressing is undetermined and system will not respond to pressing.
4. For the LED functionality during diagnostics, refer to the diagnostics Sect.
SM DELTAZ 1-E.0 GB
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CONTROL SYSTEM
CONTENTS
11.10.2 Outdoor Unit Controller Indicators
Unit has three LED’s. SB LED, STATUS LED, FAULT LED.
SB LED is ON when power is ON (230 VAC),
STATUS LED is ON when COMP is ON, and Blinks according to diagnostics mode definitions
when either fault or protection occurs.
FAULT LED Blinks according to diagnostics mode definitions when either fault or protection occurs.
11.11 Jumper Settings
11.11.1 Indoor Unit Controller
11.11.1.1 Hardware Jumpers
0 = Open Jumper (disconnect jumper).
1 = Close Jumper (connect jumper).
Self test Jumper – J1
OPERATION J1
SELF-TEST 1
NORMAL 0
Family selection Jumper – J2
Family J2
Delta 22/25/35 0
Delta 50 1
Model selection Jumper – J3, J4
Model J3 J4
A
B
C
D
11.11.1.2 Software Jumpers
0 0
0 1
1 0
1 1
Property 0 1
EEPROM DATA (J1) Use ROM* Use EEPROM
‘Thermostatic Stop- Heat’ (J2) Deactivated Activated
‘Heat to STBY’ (J3) Deactivated Activated
Enable Test Mode (J4) Deactivated Activated*
* Default values (used in the ROM)
Default SW jumpers according to the family (used in the ROM)
J1 – EEPROM/ROM setting
When J1 is 1, IDU will use model/family/general parameters from EEPROM. If EEPROM is invalid, IDU will
ignore J1 and use/copy the ROM pointed by the selected jumpers (will also set an according fault).
11-12
Property Delta 22/25/35 Delta 50
‘Thermostatic Stop- Heat’ (J2) 1 1
‘Heat to STBY’ (J3) 1 1
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CONTROL SYSTEM
CONTENTS
11.11.2 Outdoor Unit Controller
11.11.2.1 Hardware Jumpers
JP9 JUMPER LAYOUT
EEPROM Data (PIN 9) ODU3 (PIN 7) ODU2 (PIN 5) ODU1 (PIN 3) ODU0 (PIN 1)
GND (PIN 10) GND (PIN 8) GND (PIN 6) GND (PIN 4) GND (PIN 2)
ODU MODEL SELECTION
ODU3 ODU2 ODU1 ODU0 ODU Model Compressor Type
OFF OFF OFF OFF Reserved
OFF OFF OFF ON A (Single DCR 22- Use Capillary) Toshiba-DA89 (4 Poles)
OFF OFF ON OFF B (Single DCR 25- Use Capillary) Toshiba-DA89 (4 Poles)
OFF OFF ON ON C (Single DCR 35- Use Capillary) Toshiba- DA108 (4 Poles)
OFF ON OFF OFF D (Reserved)
OFF ON OFF ON E (Single DCR 22- Use EEV) Panasonic-5RS092 (6 Poles)
OFF ON ON OFF F (Single DCR 25- Use EEV) Panasonic-5RS092 (6 Poles)
OFF ON ON ON G (Single DCR 35- Use EEV) Panasonic-5RS102(6 Poles)
ON OFF OFF OFF H
ON OFF OFF ON I
ON OFF ON OFF J
ON OFF ON ON K
ON ON OFF OFF L
ON ON OFF ON M
ON ON ON OFF N
ON ON ON ON O
PCB JUMPER SETTING FOR J2 HEAD
RXD (PIN 2) TEST (PIN 4) GND (PIN 6)
VCC (PIN 1) N/C (PIN 3) TXD100 (PIN 5)
1. Connect PIN 4 and PIN 6 to enter Buit-in-Test.
2. RXD, TXD100, VCC is for MegaTools connection.
PCB JUMPER J1 HEADER
J1 header is used for program flash.
11.11.2.2 Software Jumpers
Property 0 1
EEPROM DATA (J1) Use ROM* Use EEPROM
* Default values (used in the ROM)
J1 – EEPROM/ROM setting
When J1 is 1, ODU will use model/general parameters from EEPROM. If EEPROM is invalid, ODU
will ignore J1 and use/copy the ROM pointed by the selected jumpers (will also set an according
fault).
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11-13
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CONTROL SYSTEM
CONTENTS
11.12 Test Mode
11.12.1 Entering Test Mode
System can enter Test mode in two ways:
Automatically when the following conditions exists for 30 minutes continuously:
o Mode = Cool, Set point = 16, Room temperature = 27±1, Outdoor temperature =
35±1
Or
o Mode = Heat, Set point = 30, Room temperature = 20±1, Outdoor temperature =
7±1
Manually when entering diagnostics with the following settings:
o Mode = Cool, Set point = 16
o Mode = Heat, Set point = 30
11.12.2 Unit Operation in Test Mode
In test mode, the unit will operate in fixed settings according to the indoor fan speed setting:
Indoor Fan Speed Setting Unit Setting
Low Minimum Capacity Setting
High Nominal Capacity Setting
Auto Maximum Capacity Setting
During test mode, protections are disabled, except for stop compressor status.
11.13 SW Parameters
11.13.1 Indoor Units SW Parameters
11.13.1.1 General Parameters for All Models:
Parameters defining the indoor fan speed as a function of Indoor Coil temperature in heat
mode (ICT):
ICTST Speed ICT to stop indoor fan 25
ICTVLSpeed ICT to go down to very low speed 28
ICTLSpeed ICT to start in very low speed 30
ICTHSpeed ICT to start in increase speed from very low 32
ICTTSpeed ICT to enable Turbo fan speed 40
Parameters for defrost protection:
ICTDef1 ICT to go back to normal 8
ICTDef2 ICT to ‘stop rise’ when ICT decrease 6
ICTDef3 ICT to ‘stop rise’ when ICT is stable 4
ICTDef4 ICT to ‘Hz Down’ when ICT decrease 2
ICTDef5 ICT to ‘Hz Down’ when ICT is stable 0
ICTDef6 ICT to stop compressor -2
Parameters for indoor coil over heating protection:
ICTOH1 ICT to go back to normal 45
ICTOH2 ICT to ‘stop rise’ when ICT increase 48
ICTOH3 ICT to ‘stop rise’ when ICT is stable 52
ICTOH4 ICT to ‘Hz Down’ when ICT increase 55
ICTOH5 ICT to ‘Hz Down’ when ICT is stable 60
ICTOH6 ICT to stop compressor 62
11-14
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11.13.1.2 Model Depended Parameters:
CONTENTS
CONTROL SYSTEM
Parameter name
Models
25 35
NLOAD limits as a function of selected indoor fan speed
MaxNLOADIF1C 40 40
MaxNLOADIF2C 51 55
MaxNLOADIF3C 90 90
MaxNLOADIF4C 127 127
MaxNLOADIF5C 127 127
Indoor Fan speeds
IFVLOWC 700 700
IFLOWC 850 850
IFMEDC 1050 1000
IFHIGHC 1200 1200
IFTURBOC 1300 1300
IFVLOWH 700 700
IFLOWH 950 950
IFMEDH 1050 1100
IFHIGHH 1250 1250
IFTURBOH 1350 1300
Nominal Compressor Frequency
NomLoadC 51 61
NomLoadH 58 62
11.13.2 Outdoor Units SW Parameters
Parameter Name DCR 25 Z DCR 35 Z
Compressor Parameters
MinFreqC 25 25
MaxFreqC 65 78
MinFreqH 28 28
MaxFreqH 67 75
Step1Freq 43 45
Step2Freq 55 55
Step3Freq 63 65
Frequency limits as a function of outdoor air temperature
MaxFreqAsOATC 65 78
MaxFreqAsOAT1H 58 60
MaxFreqAsOAT2H 50 50
Compressor Over Heating Protection
CTTOH1 94 94
CTTOH2 98 98
CTTOH3 102 102
CTTOH4 105 105
CTTOH5 120 120
Compressor Over Current Protection [A]
CCR01 35 40
CCR02 37 42
CCR03 39 44
CCR04 42 47
Outdoor Fan Speed (RPM)
OFLOWC
OFMEDC
OFMAXC 830 830
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CONTENTS
12 TROUBLESHOOTING
12.1 ELECTRICAL & CONTROL TROUBLESHOOTING
WARNING!!!
When Power Up – the whole outdoor unit controller, including the wiring, is under HIGH
VOLTAGE!!!
Never open the Outdoor unit before turning off the Power!!!
When turned off, the system is still charged (400V)!!!
It takes about 4 Min. to discharge the system.
Touching the controller before discharging may cause an electrical shock!!!
For safe handling of the controller please refer to section 12.3 below.
12.1.1 Single Split system failures and corrective actions
No SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION
Power supply indicator (Red
1
LED) does not light up.
Unit does not respond to
remote control message
2
Unit responds to remote
control message but Operate
3
indicator (Green LED) does
not light up
Indoor fan does not start
(louvers are opened and
Green LED does light up)
4
Indoor fan works when unit is
OFF, and indoor fan speed is
5
not changed by remote control
command.
Compressor does not start
6
Compressor stops during
operation and Green LED
7
remains on
Compressor is on but outdoor
8
fan does not work
Unit works in wrong mode
(cool instead of heat or heat
9
instead of cool)
All components are operating
properly but no cooling or no
10
heating
No power supply
Remote control
message not reached
the indoor unit
Problem with display
PCB
Unit in heat mode and
coil is still not warm.
Problem with PCB or
capacitor
PCB problem Replace controller
Electronics control
problem or protection
Electronic control or
power supply problem
Problem with outdoor
electronics or outdoor
fan
Electronics or power
connection to RV
Refrigerant leak Check refrigeration system.
Check power supply. If power supply is OK,
check display and display wiring. if OK,
replace controller.
Check remote control batteries, if batteries
are OK, check display and display wiring, if
OK, replace display PCB.
If still not OK replace controller.
Replace display PCB.
If still not OK replace controller.
Change to cool mode and check.
Change to high speed and Check power
supply to motor is higher than 130VAC
(for triack controlled motor) or higher than
220VAC for fixed speed motors, if OK replace
capacitor, if not OK replace controller
Perform diagnostics (See 12.1.3 below), and
follow the actions described.
Perform diagnostics (See 12.1.3 below), and
follow the actions described.
Check outdoor fan motor according to the
procedure in section 12.2.3 below, if not OK
replace controller
Check RV power connections, if OK,
Check RV operation with direct 230VAC
power supply, if OK,
Replace outdoor controller.
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TROUBLESHOOTING
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No SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION
Compressor is over heated
and unit does not generate
11
capacity
Units goes into protections
and compressor is stopped
12
with no clear reason
Compressor motor is
generating noise and no
13
suction occurs
Water leakage from indoor
14
unit
Freezing of outdoor unit in
heat mode and outdoor unit
15
base is blocked with ice
EEV problem Check EEV
Control problem or
refrigeration system
problem
Phase order to
compressor is wrong
Indoor unit drainage
tube is blocked
Perform diagnostics (See 13.1.3 below), and
follow the actions described.
Check compressor phase order.
Check and open drainage tube.
Connect base heater.
Unit operates with wrong fan
16
speeds or wrong frequency
Wrong jumper settings
Perform diagnostics (See 12.1.3 below),
and check if units is operating by EEPROM
parameters.
12.1.2 Checking the refrigeration system
Checking system pressures and other thermodynamic measures should be done when system
is in Test Mode (in Test mode, system operates in fixed settings). The performance curves
given in this manual are given for unit performance in test mode when high indoor fan speed is
selected.
Entering test mode:
Set unit to Cool/16 degrees/High indoor fan speed, or Heat/30 degrees/High indoor fan speed,
and enter diagnostics.
12.1.3 Judgment by Indoor/Outdoor Unit Diagnostics
Enter diagnostics mode - press for five seconds Mode/Reset button in any operation mode.
Acknowledgment is by 3 short beeps and lights of all Display LED’s. Then, The units will enter
into Indoor and Outdoor unit diagnostic modes.
During the Outdoor unit diagnostics all three Indoor LED’s (STBY/Operate, Filter and Timer)
are blinking. When Indoor diagnostics is displayed, all three LED’s (STBY/Operate, Filter and
Timer) are ON.
When system enters diagnostics mode, only one fault code is shown. Order of priority is from
the lower to the higher number. Diagnostics is continuously ON as long as power is ON. The
current system operation mode will not be changed.
If no fault occurred in the system, no fault code will be displayed during normal operation MOde.
The last fault code will be displayed even if the system has recovered from that fault. The last
fault will be deleted from the EEPROM after the system has exit diagnostics mode.
12-2
In diagnostics mode, system fault / status will be indicated by blinking of Filter & Timer LEDs.
The coding method will be as follows:
Filter LED will blink 5 times in 5 seconds, and then will be shut off for the next 5 seconds.
Timer LED will blink during the same 5 seconds according to the following Indoor / Outdoor
unit tables:
Note: 0 – OFF, 1-ON
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TROUBLESHOOTING
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12.1.3.1 Indoor unit Diagnostics
No Problem 5 4321
1 RT-1 is disconnected 0 0001
2 RT-1 is shorted 0 0010
3 RT-2 is disconnected 0 0011
4 RT-2 is shorted 0 0100
5 Reserved 0 0101
7 Communication mismatch 0 0111
8 No Communication 0 1000
9 No Encoder 0 1001
10 Reserved 0 1010
11 Outdoor Unit Fault 0 1011
… Reserved
17 Defrost protection 1 0001
18 Deicing Protection 1 0010
19 Outdoor Unit Protection 1 0011
20 Indoor Coil HP Protection 1 0100
21 Reserved 1 0101
22 Reserved
24 EEPROM Not Updated 1 1000
25 Bad EEPROM 1 1001
26 Bad Communication 1 1010
27 Using EEPROM data 1 1011
28 Model A 1 1100
29 Model B 1 1101
30 Model C 1 1110
31 Model D 1 1111
13.1.3.2 Indoor unit diagnosis and corrective actions
No. Fault Probable Cause Corrective Action
Sensor failures of all
1
types
Communication
mismatch
2
No Communication Communication or grounding
3
No Encoder Indoor electronics or motor Check motor wiring, if ok, replace motor,
Indoor and Outdoor controllers
are with different versions
wiring is not good.
4
Outdoor Unit Fault Outdoor controller problem Switch to Outdoor diagnostics.
5
EEPROM Not Updated System is using ROM parameters
6
Bad EEPROM No action, unless special parameters
and not EEPROM parameters
7
Bad Communication Communication quality is low
8
Using EEPROM data No problem. System is using
9
reliability
EEPRRRROM parameters
Check sensor connections or replace
sensor
Replace Indoor controller
Check Indoor to Outdoor wiring and
grounding
if still not ok, replace Indoor controller.
No action, unless special parameters
are required for unit operation.
are required for unit operation.
Check Indoor to Outdoor wiring and
grounding
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13.1.3.3 Outdoor unit Diagnostics
DCR 22 / 25 / 35 diagnostics
No Problem 54321
1 OCT shorted/disconnected
2 CTT shorted/disconnected
3 HST shorted/disconnected
4 OAT shorted/disconnected
5 OMT shorted/disconnected
… Reserved
11 IPM Fault
12 Reserved
13 DC under voltage
14 Reserved
15 Zero Crossing detection fault
16 Mismatch between IDU & ODU models
17 No Communication
… Reserved
20 Heat sink Over Heating
21 Deicing
22 Compressor Over Heating
23 Compressor Over Current
… Reserved
26 Copressor Lock
27 Bad Communication
28 Missing ODU configuration
29 Undefined ODU Model
30 Outdoor Coil Overheating
31 Operation condition is exceeded
00001
00010
00011
00100
00101
01011
01100
01101
01110
01111
10000
10001
10100
10101
10110
10111
11010
11011
11100
11101
11110
11111
12.1.3.4 Outdoor unit diagnosis and corrective actions
No. Fault Probable Cause Corrective Action
Sensors failures of all types Check sensors connections or
1
IPM Fault Electronics HW problem Check all wiring and jumper
2
Bad EEPROM No action, unless special
3
DC under/over Voltage Electronics HW problem Check outdoor unit power supply
4
AC under Voltage Check outdoor unit power supply
5
Indoor / Outdoor unit
6
Communication mismatch
No Communication Communication or grounding
7
Compressor Lock Switch unit to STBY and restart
8
Bad Communication Communication quality is low
9
Indoor and Outdoor controllers
are with different versions
wiring is not good.
reliability
replace sensors.
settings, if OK, replace
electronics.
parameters are required for unit
operation.
voltage
voltage
Replace Indoor controller
Check Indoor to Outdoor wiring
and grounding
Check Indoor to Outdoor wiring
and grounding
12.1.4 Judgement by MegaTool
12-4
MegaTool is a special tool to monitor the system states.
Using MegaTool requires:
A computer with RS232C port.
A connection wire for MegaTool.
A special MegaTool software.
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Use MegaTool according to following procedure:
Setup MegaTool software: copy the software to the computer.
Connect RS232C port in computer with MegaTool port in Indoor/Outdoor unit controller by
the connection wire.
Run the software and choose the COM port, you can monitor the A/C system state in monitor
tab.
12.2 Simple procedures for checking the Main Parts
12.2.1 Checking Mains Voltage.
Confirm that the Mains voltage is between 198 and 264 VAC. If Mains voltage is out of this range,
abnormal operation of the system is expected. If in range check the Power (Circuit) Breaker and
look for broken or loosed cable lugs or wiring mistake(s).
12.2.2 Checking Power Input.
If Indoor unit power LED is unlighted, power down the system and check the fuse of the Indoor
unit. If the fuse is OK replace the Indoor unit controller. If the fuse has blown, replace the fuse
and power up again.
Checking Power Input procedure for the Outdoor unit is the same as with the Indoor unit.
12.2.3 Checking the Outdoor Fan Motor.
Enter Test Mode (where the OFAN speed is high)
check the voltage between two pins( Hi and N ) of connector Controller OFAN, normal voltage
is 220VAC.
12.2.4 Checking the Compressor.
The compressor is brushless permanence magnetic DC motor. Three coil resistance is same.
Check the resistance between three poles. The normal value should be below 0.5 ohm (TBD).
Pay attention U,V, Ware respective to connect to RED, BROWN, BLACK wires.
12.2.5 Checking the Reverse Valve (RV).
Running in heating mode, check the voltage between two pins of reverse valve connector,
normal voltage is 220VAC.
12.3 Precaution, Advise and Notice Items
12.3.1 High voltage in Ou0tdoor unit controller.
Whole controller, including the wires that are connected to the Outdoor unit controller may have
the potential hazard voltage when power is on. Touching the Outdoor unit controller may cause
an electrical shock.
Advise: Don’t touch the naked lead wire and don’t insert finger, conductor or anything else into
the controller when power is on.
12.3.2 Charged Capacitors
Three large-capacity electrolytic capacitors are used in the Outdoor unit controller. Therefore,
charging voltage (380VDC) remains after power down. Discharging takes about four minutes
after power is off. Touching the Outdoor unit controller before discharging may cause an electrical
shock.
12.3.3 Additional advises
There are sharp fringes and sting on shell. Use gloves when disassemble
SM DELTAZ 1-E.0 GB
When disassemble the controller or the front panel, turn off the power supply.
When connecting or disconnecting the connectors on the PCB, hold the whole housing, don’t
pull the wire.
12-5
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EXPLODED VIEWS AND SPARE PARTS LISTS
CONTENTS
13. EXPLODED VIEWS AND SPARE PARTS LISTS
13.1 Indoor Unit: Delta 25, Delta 35 DCI
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EXPLODED VIEWS AND SPARE PARTS LISTS
CONTENTS
13.2 Indoor Unit: Delta 25 DCI
No. Part No. Description Quan.
1 453037000 Grill A / DELTA 22,25 1
2 453100500 Grill L axis 1
3 453100600 Grill R axis 1
4 453036500 Filter for DELTA 7/9 2
7 465720000 Silk-screen front frame for Electra 1
8 4525987 SCREW COVER 3
9 453070701 Evap. System Assy./DELTA 22,25 1
10 4523526 BERAING ASSY FAN 1
11 4523523 FAN ASSY PLASTIC 1
12 452784400 IOD-7,9 Air Outlet Assy. (no wire) 1
13 4523693 DRAIN HOSE 1
14 4526659 REAR PANEL ASSY 1
15 453027400 Mount Bracket Assy./Alfa 7,9 1
16 4526000 TUBE CLIP 1
17 412040R Remote controller RC5-RC 975-630-00 1
18 4526133 Power cord cable 1
19 4523507 Step motor 1
20 453089600 Display assy. for DELTA EHK:936-034-00 1
21 453088600 PG Resin motor 12W 1
22 453089500 DELTA DCI indoor controller EHK: 916-540-00 1
23 4525998 MOTEOR COVER 1
24 438082 Thermistor Indoor coil BLACK 1
25 4519813 Thermistor room 1
26 453027000 Terminal Cover 1
13-2
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EXPLODED VIEWS AND SPARE PARTS LISTS
CONTENTS
13.3 Indoor Unit: Delta 35 DCI
No. Part No. Description Quan.
1 453036800 Grill A / DELTA 12 1
2 453100500 Grill L axis 1
3 453100600 Grill R axis 1
4 453082900 Filter for DELTA 12 2
7 465720001 Silk-screen front frame for Electra 1
8 4525987 SCREW COVER 3
9 453058201 Evap. System Assy./DELTA 35 1
10 4523526 BERAING ASSY FAN 1
11 4527111 FAN ASSY PLASTIC 1
12 452784401 IOD-12 Air Outlet Assy. (no wire) 1
13 4523693 DRAIN HOSE 1
14 4527186 IOD-12 REAR PANEL ASSY 1
15 453027500 Mount Bracket Assy./Alfa 12 1
16 4527512 Tube Clip 1
17 412040R Remote controller RC5-RC 975-630-00 1
18 4526133 Power cord cable 1
19 4523507 Step motor 1
20 453089600 Display assy. for DELTA EHK:936-034-00 1
21 453088600 PG Resin motor 12W 1
22 453089500 DELTA DCI indoor controller EHK: 916-540-00 1
23 4525998 MOTEOR COVER 1
24 438082 Thermistor Indoor coil BLACK 1
25 4519813 Thermistor room 1
26 453027000 Terminal Cover 1
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EXPLODED VIEWS AND SPARE PARTS LISTS
CONTENTS
13.4 Outdoor Unit: DСR 25 Z, DCR 35 Z R410A DCI
13-4
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EXPLODED VIEWS AND SPARE PARTS LISTS
CONTENTS
13.5 Outdoor Unit: DСR 25 Z DCI
No. Part No. Description Quan.
1 4522551 Grille A of GCN 1
2 4523441 Front panel A Painting assy 1
3 4519251 Axial Fan OD=400 1
4 467400040 Sensor/OAT & OMT 1
5 467400200 Compressor top thermistor(CTT) 1
6 467400023 Outdoor coil thermistor(OCT) 1
7 460000032R Compressor Assy. Toshiba DA89X1C-20FZ3 1
8 453052500 PAINTING BASE ASSY. 1
9 467000001 Compressor Power Cord 1
10 4518951 4-W valve SHF-4H for R410A 1
11 4522509 4-Way valve coil 1
12 461600067 4-way valve soldering assy FOR DCR 22/25 Z 1
13 463600050 Capillary Assy FOR DCR 22/25 Z 1
14 461010004 Gas Valve 3/8" R410A 1
15 4516857 BIG SIDE COVER 1
16 461000004 Liquid Valve 1/4" R410A 1
17 464630000 Side Plate Painting Assy. 1
18 204107 Clip set PVC 1
19 4519188 4 poles terminal block 1
20 453230000 Connect Plate 1
21 464800007 Back Guard Net Painting Assy./GCZ 1
22 462300092 Condenser Assy.FOR DCR 22/25 Z R410A 1
23 453052700 PATITION 1
24 453085600 Motor Support 1
25 453085800 Connect Plate/Motor Support 1
26 4516158 Cover panel Painting assy 1
27 453031200R Metal motor 27W 1
28 467300225R Controller / DCR 1.6KW OMT 1
29 452841100 Earth wire 1
30 453129300 Wire UL1007 16AWG/Controller with 250 connector 1
31 453085500 Rear Plate/Left 1
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EXPLODED VIEWS AND SPARE PARTS LISTS
CONTENTS
13.6 Outdoor Unit: DСR 35 Z DCI
No. Part No. Description Quan.
1 4522551 Grille A of GCN 1
2 4523441 Front panel A Painting assy 1
3 4519251 Axial Fan OD=400 1
4 467400040 Sensor/OAT & OMT 1
5 467400200 Compressor top thermistor(CTT) 1
6 467400023 Outdoor coil thermistor(OCT) 1
7 460000033R Compressor Assy. Toshiba DA108X1C-20FZ3 1
8 453052500 PAINTING BASE ASSY. 1
9 467000001 Compressor Power Cord 1
10 4518951 4-W valve SHF-4H for R410A 1
11 4522509 4-Way valve coil 1
12 461600068 4-way valve soldering assy FOR DCR 35 Z 1
13 463600051 Capillary Assy FOR DCR 35 Z 1
14 461010004 Gas Valve 3/8" R410A 1
15 4516857 BIG SIDE COVER 1
16 461000004 Liquid Valve 1/4" R410A 1
17 464630000 Side Plate Painting Assy. 1
18 204107 Clip set PVC 1
19 4519188 4 poles terminal block 1
20 453230000 Connect Plate 1
21 464800007 Back Guard Net Painting Assy./GCZ 1
22 462300093 Condenser Assy.FOR DCR 35 Z R410A 1
23 453052700 PATITION 1
24 453085600 Motor Support 1
25 453085800 Connect Plate/Motor Support 1
26 4516158 Cover panel Painting assy 1
27 453031200R Metal motor 27W 1
28 467300225R Controller / DCR 1.6KW OMT 1
29 452841100 Earth wire 1
30 453129300 Wire UL1007 16AWG/Controller with 250 connector 1
31 453085500 Rear Plate/Left 1
13-6
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APPENDIX A
CONTENTS
APPENDIX A
INSTALLATION AND OPERATION MANUAL
► OPERATING MANUAL DELTA 25, 35 DCI / DCR 25Z, 35Z
► INSTALLATION MANUAL DELTA 25, 35 DCI / DCR 25Z, 35Z
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