Electra DUO 38 DCI DELTA 22, DELTA 25, DELTA 35 split-system air conditioners Service Manual

DUO 38 DCI / DELTA
Indoor Units
Outdoor Units
DELTA 22
DELTA 25
DELTA 35
DUO 38 DCI
REFRIGERANT
R410A
SM DUO38 1-E.1 GB
HEAT PUMP
SEPTEMBER – 2008
CONTENT
LIST OF EFFECTIVE PAGES
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 56 consisting of the following:
Page
No.
Revision
No. #
Page
No.
Revision
No. #
Page
No.
Revision
No. #
Title ....................... 1
A ........................... 1
i ............................. 1
1-1 ........................ 1
2-1 - 2-4 ................ 1
3-1 - 3-1 ................ 1
4-1 - 4-2 ................ 1
5-1 - 5-9 ................ 1
6-1 - 6-2 ................ 1
7-1 ........................ 1
8-1 ........................ 1
9-1 - 9-2 ................ 1
10-1 ...................... 1
11-1-11-18............. 1
12-1-12-6 .............. 1
13-1-13-2 .............. 1
Appendix -A ...........1
•
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
A
CONTENT
SM DUO38 1-E.1 GB
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 .......................................................................................5-1
6.
PRESSURE CURVES ...........................................................................................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
SM DUO38 1-E.1 GB
i
INTRODUCTION
1.
1.1
INTRODUCTION
General
The new DUO 3.8 DCI Outdoor Unit is a high efficiency multi split inverter unit,
supporting Indoor Units capacity range of - 2.2, 2.5 and 3.5 Kw.
1.2
Main Features
•
•
•
•
•
•
•
•
•
•
•
1.3
DC Inverter
R410A
High COP (A class energy rating)
Pre-Charged
Base heater connection.
Cooling operation at outdoor temperature down to -100C.
Heating operation at outdoor temperature down to -150C.
10 LED’s, shows both indoor and outdoor diagnostics.
Variable Speed DC Inverter outdoor fan.
M2L diagnostics softwear cable Port ( for PC).
Low noise level
Tubing Connections
Flare type interconnecting tubing to be produced on site.
For further details please refer to APPENDIX A on this manual, and to the relevant indoor
service Manual,
1.4
Inbox Documentation
Each indoor unit is supplied with its own installation and operation manuals.
1.5
Matching Table
1.5.1
R410A
INDOOR UNITS
OUTDOOR UNITS
MODEL
REFRIGERANT
DELTA 22 DCI
DELTA 25 DCI
DELTA 35 DCI
DUO 38 DCI
R410A
√
√
√
SM DUO38 1-E.1 GB
CONTENT
1-1
PRODUCT DATA SHEET
2.
PRODUCT DATA SHEET
2.1
Outdoor Unit DUO 38 DCI / Delta Specifications.
Model Indoor Unit
DELTA 22 25 35
Model Outdoor Unit
DCI DUO Delta 38 R410A
Installation Method of Pipe
Flared
Characteristics
Capacity (4))
Power input
(4)
EER (Cooling) or COP(Heating)
(4)
Units
Cooling
Heating
Btu/hr
13300(4090-18750)
15350(4090-21140)
kW
3.90(1.50-5.50)
4.50(1.20-6.20)
kW
1.1(0.45-1.80)
1.24(0.45-1.80)
W/W
3.55
3.61
A
A
Energy efficiency class
Power supply
V/Ph/Hz
Rated current
A
Starting current
A
Circuit breaker rating
A
220-240V/Single/50Hz
4.8
5.4
10.5
15
Refrigerant control
EEV
Single Rotary DC Inverter,Panasonic
5RS102XAB
Compressor type,model
Fan type & quantity
Propeller(direct) x 1
Fan speeds
H/L
RPM
920/500
Air flow
H/L
m3/hr
2160
Sound power level
Sound pressure
H/L
dB(A)
62
63
H/L
dB(A)
52
53
WxHxD
mm
kg
38
WxHxD
mm
945*395*655
kg
40
Units per pallet
Units
9 units per pallet
Stacking height
units
3 levels
OUTDOOR
level (3)
Dimensions
Weight
Package dimensions
Packaged weight
795*290*610
Refrigerant type
R410A
Refrigerant chargless distance
kg/m
1.2/7.5
Additional charge per 1 meter
g/m
No need
Liquid line
In.(mm)
1/4"(6.35)
Suction line
In.(mm)
3/8"(9.53)
Max.tubing length
m.
Max.30
Max.height difference
m.
Max. 10
Connections
between units
Operation control type
Heating elements
Remote control
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 DUO38 1-E.1 GB
CONTENT
2-1
PRODUCT DATA SHEET
2.2
Indoor Units Data
2.2.1
DELTA 22 DCI Specifications
Model Indoor Unit / Type
DELTA 22 DCI / Wall Mounted
Installation Method
Power Supply
Fan Type & Quantity
Airflow(2)
Cooling / Heating
INDOOR
Sound Power Level(3)
Cooling / Heating
Sound Pressure Level (4)
Cooling / Heating
Condensate Drain Tube I.D.
Dimensions
Weight
Package Dimensions
Stacking Height
Heating Elements
Moisture Removal
2.2.2
INDOOR
H/M/L
m3/hr
L-H
dB (A)
49/46/43
L-H
dB (A)
36/33/30
mm
mm
kg
mm
Units
kW
L/hr
16
250
7
320
9 LEVELS
N/A
1
W/H/D
W/H/D
400
680
740
350
300
185
265
DELTA 25 DCI Specifications
Model Indoor Unit / Type
Installation Method
Power Supply
Fan Type & Quantity
Airflow(2)
Cooling / Heating
Sound Power Level(3)
Cooling / Heating
Sound Pressure Level (4)
Cooling / Heating
Condensate Drain Tube I.D.
Dimensions
Weight
Package Dimensions
Stacking Height
Heating Elements
Moisture Removal
(1)
(2)
(3)
(4)
FLARE
220-240 / 1/ 50
Crossflow *1
V/Ph/Hz
V/Ph/Hz
DELTA 25 DCI / Wall Mounted
FLARE
220-240 / 1/ 50
Crossflow *1
H/M/L
m3/hr
L-H
dB (A)
52/48/45
L-H
dB (A)
39/35/32
W/H/D
W/H/D
mm
mm
kg
mm
Units
kW
L/hr
420
680
740
350
16
250
7
320
9 LEVELS
N/A
1.0
270
185
260
Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
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.
2-2
CONTENT
SM DUO38 1-E.1 GB
PRODUCT DATA SHEET
2.2.3
DELTA 35 DCI Specifications
Model Indoor Unit / Type
DELTA 35 DCI / Wall Mounted
Installation Method
FLARE
Power Supply
V/Ph/Hz
220-240 / 1/ 50
INDOOR
Fan Type & Quantity
Crossflow *1
Airflow(2)
Cooling / Heating
Sound Power Level(3)
Cooling / Heating
Sound Pressure Level (4)
Cooling / Heating
H/M/L
m3/hr
L-H
dB (A)
56/46/42
L-H
dB (A)
39/33/29
Dimensions
Weight
W/H/D
mm
kg
840
250
8.0
185
Package Dimensions
W/H/D
mm
930
320
265
Condensate Drain Tube I.D.
450
mm
Stacking Height
350
16
Units
9 LEVELS
kW
L/hr
N/A
1.5
Heating Elements
Moisture Removal
(1)
(2)
(3)
(4)
550
Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN14511.
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.
2.3
Indoor Units Combinations
Cooling
Indoor Units Room A Room B
Combinations
[W]
[W]
22
2200
-
25
2500
35
3500
22+22
1850
22+25
Heating
Total Capacity
Power Input
[W]
[W]
Room A Room B
Total Capacity
Power Input
[W]
[W]
[W]
[W]
2200 (1500 - 2600) 675 (450 - 850)
2500
-
2500 (1200 - 3100) 750 (450 - 1000)
-
2500 (1500 - 3000) 750 (450 - 980)
2800
-
2800 (1200 – 3500) 910 (450 – 1220)
-
3500 (1500 - 4100) 1030 (450 – 1250)
3600
-
3600 (1200 - 4100) 1030 (450 - 1150)
1850 3700 (1500 - 4700) 1000 (450-1800)
2150
2150
4300 (1200 – 5200) 1200 (450 – 1800)
1850
1950 3800 (1500 - 4800) 1050 (450 - 1800)
2150
2250
4400 (1200 – 5300) 1240 (450 – 1800)
22+35
1850
3050 4900 (1500 - 5200) 1350 (450 - 1800)
2150
3250
5400 (1200 – 5900) 1520 (450 – 1800)
25+25
1950
1950 3900 (1500 - 5500) 1100 (450 - 1800)
2250
2250
4500 (1200 - 6200) 1280 (450 - 1800)
25+35
1950
3050 5000 (1500 - 5500) 1400 (450 - 1800)
2250
3250
5500 (1200 - 6200) 1560 (450 - 1800)
SM DUO38 1-E.1 GB
CONTENT
2-3
RATING CONDITIONS
3.
RATING CONDITIONS
Standard conditions in accordance with ISO 5151, ISO 13253 (for ducted units)
and EN 14511.
Cooling:
Indoor:
27oC DB 19oC WB
Outdoor: 35 oC DB
Heating:
Indoor:
20oC DB
Outdoor: 7oC DB 6oC WB
3.1
Operating Limits
Indoor
Cooling
Heating
Voltage
SM DUO38 1-E.1 GB
Outdoor
Upper limit
32oC DB 23oC WB
46oC DB
Lower limit
21oC DB 15oC WB
-10oC DB
Upper limit
27oC DB
24oC DB 18oC WB
Lower limit
10oC DB
-15oC DB -16oC WB
1PH
198 – 264 V
3PH
N/A
CONTENT
3-1
OUTLINE DIMENSIONS
4.
OUTLINE DIMENSIONS
4.1
Indoor Unit: DELTA 22, DELTA 25 DCI
MOUNTING TEMPLATE
TO BE USED FOR LOCATION
OF INDOOR UNIT ON THE WALL
306
141
58
INDOOR UNIT OUTLINE
40
52
244
160
46
Min50
CEILING
41
80
380
670
118
TUBING WALL OPENING
(FOR REAR ROUTING)
TUBING WALL OPENING
(FOR REAR LEFT ROUTING)
AIR INTAKE
680
185
250
AIR INTAKE
AIR OUTLET
4.2
Indoor Unit: DELTA 35 DCI
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SM DUO38 1-E.1 GB
CONTENT
4-1
OUTLINE DIMENSIONS
4.3
Outdoor Unit: DUO 38 DCI / Delta
4-2
CONTENT
SM DUO38 1-E.1 GB
PERFORMANCE DATA
5.
PERFORMANCE DATA
5.1
Delta 22+22 DCI
5.1.1
Cooling Capacity (kW) - Run Mode (Unit A or B)
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB/WB TEMPERATURE [0C]
OD COIL ENTERING AIR
DB TEMPERATURE [0C]
DATA
22/15
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
-10 - 20 (protection range)
25
30
35
40
46
1.98
1.53
0.39
1.80
1.46
0.44
1.62
1.38
0.48
24/17
27/19
29/21
80 - 110 % of nominal
80 - 105 % of nominal
25 - 50 % of nominal
2.10
2.22
2.33
1.57
1.61
1.64
0.40
0.41
0.42
1.92
2.03
2.15
1.49
1.53
1.56
0.45
0.45
0.46
1.73
1.97
1.85
1.41
1.45
1.49
0.50
0.49
0.51
80%-92% of nominal
80%-92% of nominal
80%-100% of nominal
70%-85% of nominal
70%-85% of nominal
90%-100% of nominal
32/23
2.45
1.68
0.43
2.26
1.60
0.47
2.08
1.52
0.52
LEGEND
TC
SC
PI
WB
DB
ID
OD
5.1.2
–
–
–
–
–
–
–
Total Cooling Capacity, kW
Sensible Capacity, kW
Power Input, kW
Wet Bulb Temp., (oC)
Dry Bulb Temp., (oC)
Indoor
Outdoor
Capacity Correction Factors
1.2
Capacity Ration
1.1
1
0.9
0.8
0.7
0.6
0.5
20
25
30
35
40
45
Outdoor Temperature [deg C]
SM DUO38 1-E.1 GB
CONTENT
5-1
PERFORMANCE DATA
5.1.3
Heating Capacity (kW) - Run Mode(Unit A or B)
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB TEMPERATURE [C0]
OD COIL ENTERING AIR
DB/WB TEMPERATURE
[C0]
-15/-16
-10/-12
-7/-8
-1/-2
2/1
7/6
10/9
15/12
DATA
15
20
25
TC
1.15
1.07
1.00
PI
0.38
0.44
0.49
TC
1.37
1.30
1.23
PI
0.44
0.50
0.55
TC
1.54
1.47
0.55
PI
0.49
0.54
0.60
TC
1.63
1.56
1.49
PI
0.51
0.56
0.62
TC
1.68
1.61
1.54
PI
0.52
0.58
0.63
TC
2.22
2.15
2.08
PI
0.54
0.60
0.66
TC
2.31
2.24
2.17
PI
0.57
0.63
0.68
TC
2.40
2.33
2.26
PI
0.60
0.65
0.71
15-24
TC
85 - 105 % of nominal
(Protection Range)
PI
80 - 120 % of nominal
LEGEND
TC
PI
WB
DB
ID
OD
5.1.4
–
–
–
–
–
–
Total Cooling Capacity, kW
Power Input, kW
Wet Bulb Temp., (oC)
Dry Bulb Temp., (oC)
Indoor
Outdoor
Capacity Correction Factors
1.2
Capacity Ration
1.1
1
0.9
0.8
0.7
0.6
0.5
-15
-10
-5
0
5
10
15
Outdoor WB Temperature [deg C]
5-2
CONTENT
SM DUO38 1-E.1 GB
PERFORMANCE DATA
5.2
Delta 25+25 DCI
5.2.1
Cooling Capacity (kW) - Run Mode (Unit A or B)
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB/WB TEMPERATURE [0C]
OD COIL ENTERING
AIRDB TEMPERATURE
[oC]
DATA
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
-10 - 20 (protection range)
25
30
35
40 (protection range
46 (protection range
24/17
22/15
27/19
29/21
80 - 110 % of nominal
80 - 105 % of nominal
25 - 50 % of nominal
2.21
2.34
2.46
1.68
1.72
1.76
0.44
0.45
0.46
2.02
2.14
2.27
1.59
1.63
1.67
0.50
0.49
0.51
1.83
2.07
1.95
1.51
1.55
1.59
0.55
0.54
0.56
80%-92% of nominal
80%-92% of nominal
80%-100% of nominal
70%-85% of nominal
70%-85% of nominal
90%-100% of nominal
2.09
1.64
0.43
1.90
1.56
0.48
1.71
1.47
0.53
32/23
2.58
1.80
0.47
2.39
1.71
0.52
2.19
1.63
0.57
LEGEND
TC
SC
PI
WB
DB
ID
OD
5.2.2
–
–
–
–
–
–
–
Total Cooling Capacity, kW
Sensible Capacity, kW
Power Input, kW
Wet Bulb Temp., (oC)
Dry Bulb Temp., (oC)
Indoor
Outdoor
Capacity Correction Factors
Cooling Capacity Ratio Vs. Outdoor Temperature
Capacity Ration
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
20
25
30
35
40
45
Outdoor Temperature [deg C]
SM DUO38 1-E.1 GB
CONTENT
5-3
PERFORMANCE DATA
5.2.3
Heating Capacity (kW) - Run Mode(Unit A or B)
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB TEMPERATURE [0C]
OD COIL ENTERING
AIR DB/WB
TEMPERATURE [0C]
-15/-16
-10/-12
-7/-8
-1/-2
2/1
7/6
10/9
15/12
15-24
(Protection Range)
DATA
15
20
25
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
1.20
0.41
1.44
0.47
1.61
0.52
1.70
0.54
1.76
0.56
2.32
0.58
2.42
0.61
2.51
0.64
1.12
0.47
1.36
0.53
1.54
0.58
1.63
0.60
1.69
0.62
1.05
0.53
1.29
0.59
1.47
0.64
1.55
0.66
1.61
0.68
2.18
0.70
2.27
0.73
2.36
0.75
2.25
0.64
2.34
0.67
2.43
0.69
85 - 105 % of nominal
80 - 120 % of nominal
LEGEND
TC
PI
WB
DB
ID
OD
1.3.4
–
–
–
–
–
–
Total Cooling Capacity, kW
Power Input, kW
Wet Bulb Temp., (oC)
Dry Bulb Temp., (oC)
Indoor
Outdoor
Capacity Correction Factors
Heating Capacity Ratio Vs. Outdoor Temperature
Capacity Ration
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
-15
-10
-5
0
5
10
15
Outdoor WB Temperature [deg C]
5-4
CONTENT
SM DUO38 1-E.1 GB
PERFORMANCE DATA
5.3
Delta 25+35
5.3.1
Cooling Capacity (kW) - Run Mode(Unit A or B)
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB/WB TEMPERATURE [OC]
OD COIL
ENTERING AIR DB
TEMPERATURE [OC]
DATA
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
TC
SC
PI
-10 - 20 (protection
range)
25
30
35
40
46
24/17
22/15
27/19
29/21
80 - 110 % of nominal
80 - 105 % of nominal
25 - 50 % of nominal
3.46
3.65
3.84
2.27
2.33
2.38
0.68
0.70
0.71
3.16
3.35
3.54
2.16
2.21
2.27
0.77
0.76
0.79
2.86
3.24
3.05
2.05
2.10
2.15
0.85
0.84
0.86
80%-92% of nominal
80%-92% of nominal
80%-100% of nominal
70%-85% of nominal
70%-85% of nominal
90%-100% of nominal
3.27
2.22
0.67
2.97
2.11
0.75
2.67
1.99
0.82
32/23
4.04
2.43
0.72
3.73
2.32
0.80
3.43
2.21
0.88
LEGEND
TC
SC
PI
WB
DB
ID
OD
5.3.2
–
–
–
–
–
–
–
Total Cooling Capacity, kW
Sensible Capacity, kW
Power Input, kW
Wet Bulb Temp., (oC)
Dry Bulb Temp., (oC)
Indoor
Outdoor
Capacity Correction Factors
Cooling Capacity Ratio Vs. Outdoor Temperature
Capacity Ration
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
20
25
30
35
40
45
Outdoor Temperature [deg C]
SM DUO38 1-E.1 GB
CONTENT
5-5
PERFORMANCE DATA
5.3.3
Heating Capacity (kW) - Run Mode(Unit A or B)
230[V] : Indoor Fan at High Speed.
ID COIL ENTERING AIR DB TEMPERATURE [0C]
OD COIL ENTERING
AIR DB/WB
TEMPERATURE [0C]
-15/-16
-10/-12
-7/-8
-1/-2
2/1
7/6
10/9
15/12
15-24
(Protection Range)
DATA
15
20
25
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
TC
PI
1.73
0.59
2.07
0.68
2.33
0.75
2.46
0.78
2.55
0.80
3.36
0.84
3.49
0.87
3.62
0.91
1.62
0.67
1.97
0.76
2.22
0.83
2.35
0.86
2.44
0.89
1.52
0.76
1.86
0.85
2.12
0.91
2.25
0.95
2.33
0.97
3.14
1.00
3.28
1.04
3.41
1.08
3.25
0.92
3.38
0.96
3.52
1.00
85 - 105 % of nominal
80 - 120 % of nominal
LEGEND
TC
PI
WB
DB
ID
OD
5.3.4
–
–
–
–
–
–
Total Cooling Capacity, kW
Power Input, kW
Wet Bulb Temp., (oC)
Dry Bulb Temp., (oC)
Indoor
Outdoor
Capacity Correction Factors
Cooling Capacity Ratio Vs. Outdoor Temperature
Capacity Ration
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
20
25
30
35
40
45
Outdoor Temperature [deg C]
5-6
CONTENT
SM DUO38 1-E.1 GB
PERFORMANCE DATA
5.4
Capacity Correction Factor Due to Tubing Length
(OneWay)
5.4.1
Delta 22 / 25 / 35 DCI
5.4.2
Cooling
Capacity Ratio VS.Tubing Length - Cooling
Capacity Ratio
1.02
1.00
0.98
0.96
0.94
0.92
0.90
0.88
4
5.4.3
6
8
10
12
14 16 18 20 22
Tubing Length [m]
24
26
28
30
26
28
30
Heating
Capacity Ratio VS. Tubing Length - Heating
Capacity Ratio
1.02
1.00
0.98
0.96
0.94
0.92
0.90
0.88
4
SM DUO38 1-E.1 GB
6
8
10
12 14 16 18 20
Tubing Length [m]
CONTENT
22
24
5-7
PRESSURE CURVES
6.
PRESSURE CURVES
6.1
Model: Delta 22+22, Delta 25+25 DUO 38 DCI
6.1.1
Cooling – Test Mode
Suction Pressure VS.Outdoor Temp'.
Suction Pressure [kPa]
1400
1300
Indoor DB/WB
Temp'.
1200
1100
22/ 15
1000
24/ 17
27/ 19
900
29/ 21
800
32/ 23
700
10
15
20
25
30
35
40
45
Outdoor DB Temperature [ºC]
Discharge Pressure [kPa]
Discharge Pressure VS. Outdoor Temp'.
3750
Indoor DB/WB
Temp'.
3500
3250
3000
22/ 15
2750
24/ 17
2500
2250
27/ 19
2000
29/ 21
1750
32/ 23
1500
10
15
20
25
30
35
40
45
Outdoor DB Temperature [ºC]
SM DUO38 1-E.1 GB
CONTENT
6-1
PRESSURE CURVES
6.1.2
Heading – Test Mode
Suction Pressure VS.Outdoor Temp'.
Suction Pressure [kPa]
1100
1000
Indoor DB
Temp'.
900
800
15
700
20
600
25
500
400
-15
-10
-5
0
5
10
15
Outdoor WB Temperature [ºC]
Discharge Pressure VS. Outdoor Temp'.
Discharge Pressure [kPa]
3250
Indoor DB
Temp'.
3000
2750
2500
15
2250
20
2000
25
1750
1500
-15
-10
-5
0
5
10
15
Outdoor WB Temperature [ºC]
6-2
CONTENT
SM DUO38 1-E.1 GB
PRESSURE CURVES
6.2
Model: Delta 25+35 DUO 38 DCI
6.2.1
Cooling – Test Mode
Suction Pressure VS.Outdoor Temp'.
Suction Pressure [kPa]
1200
1100
Indoor DB/WB
Temp'.
1000
22/ 15
24/ 17
900
27/ 19
29/ 21
800
32/ 23
700
10
15
20
25
30
35
40
45
Outdoor DB Temperature [ºC]
Discharge Pressure [kPa]
Discharge Pressure VS. Outdoor Temp'.
4000
3750
Indoor DB/WB
Temp'.
3500
3250
3000
2750
22/ 15
24/ 17
2500
2250
2000
27/ 19
29/ 21
1750
1500
32/ 23
10
15
20
25
30
35
40
45
Outdoor DB Temperature [ºC]
SM DUO38 1-E.1 GB
CONTENT
6-3
PRESSURE CURVES
6.1.2
Heading – Test Mode
Suction Pressure VS.Outdoor Temp'.
Suction Pressure [kPa]
1100
1000
900
Indoor DB
Temp'.
800
15
700
20
600
25
500
400
300
-15
-10
-5
0
5
10
15
Outdoor WB Temperature [ºC]
Discharge Pressure VS. Outdoor Temp'.
Discharge Pressure [kPa]
3250
3000
Indoor DB
Temp'.
2750
2500
15
2250
20
2000
25
1750
1500
-15
-10
-5
0
5
10
15
Outdoor WB Temperature [ºC]
6-4
CONTENT
SM DUO38 1-E.1 GB
ELECTRICAL DATA
7.
ELECTRICAL DATA
Power Supply
1 PH, 220-240 VAC, 50Hz
Connected to
Outdoor
Maximum Current
13.7 A
Inrush Current
35 A
Starting Current
10 A
Circuit breaker
16 A
3 X 2.5 mm2
Power supply wiring - No. x cross section
2 X 4 X 1.5 mm2
Interconnecting cable - No. x cross section
Note:
• Inrush current is the current when power is up. (charging the DC capacitors at outdoor unit
controller).
• Starting current is the current when starting the compressor
NOTE
Power wiring cord should comply with local lows and electrical
regulations requirements.
CONTENT
7-1
SM DUO38 1-E.1 GB
CONTENT
J50
J51
4
5
1 234
1234
1 2 3 4 5 6
468600029
P2
1 2 3
COM2
COM1
COM
N
L
EEV2
To metal sheet
Alarm
P10 P70
1 2 3 4 5 6
P11
Night
Stdby
J91
MSMP PCB J41
RGT2
RGT1
6
J40
Model Jumper
3
P1
2
EEV1
J90
2
1
OFAN
P15
1 2 3 4 5 6
P19
P7 EEV
N
L
N
COM
EMI filter PCB
N
COM N-COM
L-F N-F COM
L
P10
E
E
P2
1 2
OAT
EARTH
P12
P20
1 2
CTT
To metal sheet
1 2
OCT
1 2 3 4 5 6
Outdoor unit controller PCB
J30
JP60
Jumper Mega tool
1
JP9
P4
1 2
valve
DC
Vm=310V
Reverse
Base
heater
GND
Vcc=15V DC
Vsp=0-6.5V DC
Choke coil
P3 P9 P11 P13 P14
U V W
COMP
1 2
P8
C1
C2
T 15A/250Vac
L
N
L1/2
N1/2
FUSE
1 2
P5
SUCT HST
Power supply
~230V 50Hz
L1
N1
C1
C2
Y/G
Brown
Blue
Red
Y/G
Brown
Blue
Red
6
6
N
L
5/C 4/L
N
L
UNIT 2
5/C 4/L
UNIT 1
To metal sheet
Ferrite core
To metal sheet
Ferrite core
DUO 38 DCI / DELTA Wiring Diagram
1 2
8.1
1 2
WIRING DIAGRAMS
4 3 2 1
8.
2 1
PG
OUTDOOR UNIT CIRCUIT DIAGRAM
WIRING DIAGRAMS
8-1
ODU
SM DUO38 1-E.1 GB
Strainer
COMP.
DUO 38 DCI => Cooling Mode
CONTENT
Strainer
9.1.1
Brass Jointer
(1/4")
Heat Pump Models
Liquid Valve
(1/4")
IDU2
9.1
Strainer
Brass Jointer
(1/4")
REFRIGERATION DIAGRAMS
EEV2
EEV1
Liquid Valve
(1/4")
Gas Valve
(3/8")
Brass Jointer
(3/8")
9.
ID¦3.0‫ױ‬
ID¦3.0‫ױ‬
ID¦3.0‫ױ‬
Reverse
Valve
Gas Valve
(3/8")
Brass Jointer
(3/8")
IDU1
REFRIGERATION DIAGRAMS
9-1
ODU
9-2
CONTENT
ID¦3.0‫ױ‬
Strainer
COMP.
EEV2
EEV1
Strainer
Liquid Valve
(1/4")
Strainer
Liquid Valve
(1/4")
Gas Valve
(3/8")
Brass Jointer
(1/4")
Brass Jointer
(1/4")
Brass Jointer
(3/8")
IDU2
9.1.2
ID¦3.0‫ױ‬
ID¦3.0‫ױ‬
Reverse
Valve
Gas Valve
(3/8")
Brass Jointer
(3/8")
IDU1
REFRIGERATION DIAGRAMS
DUO 38 DCI => Heating Mode
SM DUO38 1-E.1 GB
TUBING CONNECTIONS
10.
TUBING CONNECTIONS
TUBE (Inch)
¼”
⅜”
½”
⅝”
¾”
11-13
13-20
11-13
40-45
13-20
11-13
60-65
18-25
11-13
70-75
18-25
11-13
80-85
40-50
11-13
TORQUE (Nm)
Flare Nuts
Valve Cap
Service Port Cap
1.
2.
3.
4.
5.
6.
7.
8.
Valve Protection Cap-end
Refrigerant Valve Port (use Allen wrench to open/close)
Valve Protection Cap
Refrigerant Valve
Service Port Cap
Flare Nut
Unit Back Side
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.
SM DUO38 1-E.1 GB
CONTENT
10-1
CONTROL SYSTEM
11.
CONTROL SYSTEM
11.1
General Functions and Operating Rules (for single split
models)
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.
11.2
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.
11.3
Compressor Frequency Control
11.3.1
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
Low
Medium
High
Turbo
Auto
Maximum NLOAD Cooling
Max NLOADIF1C
Max NLOADIF2C
Max NLOADIF3C
Max NLOADIF4C
Max NLOADIF5C
Maximum NLOAD Heating
127
127
127
127
127
NLOAD limits as a function of power shedding:
Mode
Power Shedding OFF
Power Shedding ON
Cool
No limit
Nominal Cooling
Heat
No limit
Nominal Heating
SM DUO38 1-E.1 GB
CONTENT
11-1
CONTROL SYSTEM
11.3.2
Target Frequency Setting
The compressor target frequency is a function of the NLOAD number sent from the indoor
controller and the outdoor air temperature.
Basic Target Frequency Setting:
NLOAD
Target Frequency
127
Maximum frequency
10 < NLOAD < 127
Interpolated value between minimum and maximum frequency
10
Minimum frequency
0
Compressor is stopped
Target frequency limits as a function of outdoor air temperature (OAT):
OAT Range
Cool mode limits
OAT < 6
No limit
MaxFreqAsOATC
6 ≤ OAT < 15
15 ≤ OAT < 24
24 ≤ OAT
11.3.3
Heat mode limits
No limit
MaxFreqAsOAT1H
MaxFreqAsOAT2H
Frequency Changes Control
Frequency change rate is 1 Hz/sec.
11.3.4
Compressor Starting Control
Frequency
Step 3
Step 2
Step 1
1
Minute
1
Minute
Time
Min 10 Minutes
\
11.3.5
11-2
Minimum On and Off Time 3 minutes
CONTENT
SM DUO38 1-E.1 GB
CONTROL SYSTEM
11.4
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.
11.4.1
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.
11.5
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.
11.6
Outdoor Fan Control
7 outdoor fan speeds are determined for each model. 3 speeds for cool and dry modes,
and 3 speeds for heat mode, and a very low speed.
Outdoor fan speed is a function of compressor frequency and outdoor air temperature
(OAT).
4 routines for fan control are determined. The control routine selection depends on
operation mode, compressor speed, and outdoor air temperature (OAT) and heat sink
temperature (HST).
Routine
A
B
C
D
Conditions
Heating with OAT < 150C
or
Cooling with OAT > 200C, or HST > 500C
or
Faulty OAT
Cooling with 200C > OAT > 70C
Cooling with 70C > OAT
Heating with OAT > 150C
Compressor Frequency (CF)
CF = 0
10 ≤ CF < OFLowFreq
OFLowFreq ≤ CF < OFMedFreq
OFMedFreq ≤ CF
Routine A
Outdoor Fan Speed
Routine B Routine C
OFF
Low
Medium
High
OFF
Low
Low
Low
OFF
Very Low
Very Low
Low
Routine D
OFF
Low
Low
Medium
When compressor is switched to OFF and the heat sink temperature is above 55 degrees,
the outdoor fan will remain ON in low speed for up to 3 minutes.
SM DUO38 1-E.1 GB
CONTENT
11-3
CONTROL SYSTEM
11.7
•
•
•
•
•
11.8
EEV (electronic Expansion valve) Control
EEV opening is defined as EEV = EEVOL + EEVCV
EEVOL is the initial EEV opening as a function of the compressor frequency, operation
mode, unit model and capacity.
EEVCV is a correction value for the EEV opening that is based on the compressor
temperature.
During the first 10 minutes of compressor operation EEVCV = 0.
Once the first 10 minutes are over, the correction value is calculated as follow: EEVCV(n) =
EEVCV(n-1) + EEVCTT
EEVCTT is the correction based on the compressor temperature. A target compressor
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.
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.
11.9
Ionizer Control
Ionizer is on when unit is on AND indoor fan is on AND Ionizer power switch (on Ionizer) is
on.
11.10
Electro Static Filter (ESF) Control
ESF is on when ESF switch is on, Safety switch is pressed, unit is on, AND indoor fan is on.
11.11
Base Heater Control
When OAT is connected, Base Heater will be on when unit is in heating and OAT<20C.
When OAT is disconnected, Base Heater will be on when unit is in heating.
11.12
Fan Mode
In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.
In Auto Fan user setting, fan speed will be adjusted automatically according to the
difference between actual room temperature and user set point temperature.
11.13
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 Auto Fan user setting, fan speed will be adjusted automatically according to the
calculated NLOAD.
11-4
CONTENT
SM DUO38 1-E.1 GB
CONTROL SYSTEM
11.14
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.
11.14.1
Temperature Compensation
In wall mounted, ducted, and cassette models, 3 degrees are reduced from room
temperature reading (except when in I-Feel mode), to compensate for temperature
difference between high and low areas in the heated room, and for coil heat radiation on
room thermistor.
The temperature compensation can be enabled/disabled by shortening of J2 on the indoor
unit controller.
11.14.2
Model
J2 Shorted
J2 Opened
Wall mounted
Cassette
Ducted
Floor/Ceiling
Compensation Disabled
Compensation Enabled
Compensation Enabled
Compensation Disabled
Compensation Enabled
Compensation Disabled
Compensation Disabled
Compensation Enabled
Indoor Fan Control in Heat Mode
Indoor fan speed depends on the indoor coil temperature:
ICTST
11.15
ICTVL
ICTL
ICTH
ICTT
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.
SM DUO38 1-E.1 GB
CONTENT
11-5
CONTROL SYSTEM
11.16
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.
11.17
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 2 to 5 Hz per minute.
HzDown2 (D2) – Compressor frequency is reduced by 5 to 10 Hz per minute.
Stop Compressor (SC) – Compressor is stopped.
11.17.1
Indoor Coil Defrost Protection
ICT Trend
ICT
Fast
Increasing
Increasing
No change
Decreasing
Fast
Decreasing
ICT < -2
-2 ≤ ICT < 0
0 ≤ ICT < 2
2 ≤ ICT < 4
4 ≤ ICT < 6
6 ≤ ICT < 8
8 ≤ ICT
SC
D1
SR
SR
Norm
Norm
SC
D1
SR
SR
Norm
Norm
SC
D2
D1
SR
SR
Norm
Normal
SC
D2
D2
D1
SR
SR
SC
D2
D2
D2
D1
SR
11.17.2
Indoor Coil over Heating Protection
ICT Trend
11-6
ICT
Fast
Decreasing
Decreasing
No Change
Increasing
Fast
Increasing
ICT > 55
53 < ICT ≤ 55
49 < ICT ≤ 53
47 < ICT ≤ 49
45 < ICT ≤ 47
43 < ICT ≤ 45
ICT ≤ 43
SC
D1
SR
SR
Norm
Norm
SC
D1
SR
SR
Norm
Norm
SC
D2
D1
SR
SR
Norm
Normal
SC
D2
D2
D1
SR
SR
SC
D2
D2
D2
D1
SR
CONTENT
SM DUO38 1-E.1 GB
CONTROL SYSTEM
11.17.3
Compressor over Heating Protection
Compressor temperature can be in one of 5 control zones (4 in protection, and 1 normal), t.
CTT
Stop-Compresor
CTTOH4
P3
CTTOH3
P2
CTTOH2
P1
CTTOH1
Normal
Control Status
Compressor Temperature
Increases
Else
Norm
D1
D2
SR
SR
D1
P1
P2
P3
Stop Compressor
11.17.4
SC
Compressor over Current Protection
CCR
Stop-Compresor
W
CCROC4
HzDown2
CCROC3
HzDown1
CCROC2
Stop-Rise
CCROC1
Normal
SM DUO38 1-E.1 GB
CONTENT
11-7
CONTROL SYSTEM
11.17.5
Heat Sink Over Heating Protection (NA for DCI 25 and 35)
HST
HST > 90
85 < HST ≤ 90
82 < HST ≤ 85
80 < HST ≤ 82
78 < HST ≤ 80
HST ≤ 78
Decreasing
SC
D1
SR
SR
Norm
HST Trend
No Change
SC
D2
D1
SR
Norm
Normal
Increasing
SC
D2
D2
D1
SR
11.17.6 Outdoor Coil Deicing Protection
11.17.6.1
Deicing Starting Conditions
Deicing operation will start when either one of the following conditions exist:
•
Case 1: OCT < OAT – 8 AND TLD > DI
•
Case 2: OCT < OAT – 12 AND TLD > 30 minutes.
•
Case 3: OCT is Invalid AND TLD > DI
•
Case 4: Unit is just switched to STBY AND OCT < OAT – 8
•
Case 5: NLOAD = 0 AND OCT < OAT -8
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.
11-8
CONTENT
SM DUO38 1-E.1 GB
CONTROL SYSTEM
11.17.6.2
Deicing Protection Procedure
OCT
12
0
Threshold
COMP
ON
T1
T2
T1
max. 12 minutes
DT
HEAT
RV
COOL
OFAN
T3
T3
ON
OFF
EEVDeicerOpen
EEV
Any
T1 = T2 = 36 seconds, T3 = 6 seconds
11.17.7 Condensate Water Over Flow Protection
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
11.17.7.1
Levels Logic (used in floor/ceiling models)
P2
0
1
1
0
SM DUO38 1-E.1 GB
P3
0
0
1
1
Level
L0
L1
L2&3
L4
CONTENT
11-9
CONTROL SYSTEM
Water Level
LEVEL4
LEVEL2&3
LEVEL1
ON
Pump
OFF
ANY
NLOAD
0
BLINK
OPER LED NORMAL
11.17.7.2
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
Overflow when
unit is ON
Overflow
Water Level
Overflow when
unit is OFF
Normal
ON
OPER
LED
OFF
BLINK
ANY
NLOAD
NLOAD is
forced to 0
0
ON
PUMP
OFF
8 min
11-10
CONTENT
8 min
8 min
SM DUO38 1-E.1 GB
CONTROL SYSTEM
11.18
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
11.19
Operating the Unit from the Mode Button
Forced operation allows starting, stopping and operating in Cooling or Heating, in preset temperature according to the following table:
Forced operation Mode
Pre-set Temperature
Cooling
200C
Heating
280C
11.20
On Unit Controls and Indicators
11.20.1
Indoor Unit Controller Controls and Indicators for All Models
Except for Floor/Ceiling model
STAND BY INDICATOR
OPERATION INDICATOR
1.
Lights up when the Air Conditioner is connected to power
and ready to receive the R/C commands
1. Lights up during operation.
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).
TIMER INDICATOR
Lights up during Timer and Sleep operation.
FILTER INDICATOR
Lights up when Air Filter needs to be cleaned.
COOLING INDICATOR
Lights up when system is switched to Cool Mode by using the Mode
Switch on the unit.
HEATING INDICATOR
Lights up when system is switched Heat Mode by using the Mode
Switch on the unit.
Mode SWITCH
(COOL/HEAT/OFF)
Every short pressing , the next operation mode is selected, in this
order :
SB → Cool Mode → Heat Mode → SB → …
In long pressing system enters diagnostic mode.
RESET / FILTER SWITCH
SM DUO38 1-E.1 GB
For short pressing:
When Filter LED is on - turn off the FILTER INDICATOR after a clean
filter has been reinstalled.
When Filter LED is off – enable/disable the buzzer announcer, if
selected.
CONTENT
11-11
CONTROL SYSTEM
11.20.2
Indoor Unit Controls and Indicators for LCD Display
(Low)
(Med)
(High)
(Turbo)
STBY
Cool
Heat
Auto
Fan
Dry
OFF
SPT(1*)
SPT(1*)
SPT(1*)
SPT(1*)
SPT(1*)
OFF(2*)
ON(2*)
ON(2*)
ON(2*)
ON(2*)
ON(2*)
OFF(2*)
OFF(2*)
OFF(2*)
OFF(2*)
OFF(2*)
OFF(2*)
User
setting
IFAN
speed
User
setting
IFAN
speed
User
setting
IFAN
speed
User
setting
IFAN
speed
User
setting
IFAN
speed
OFF
ON(3*)
ON(3*)
ON(3*)
OFF
ON(3*)
OFF
ON(3*)
ON(3*)
ON(3*)
OFF
OFF
OFF
OFF
OFF
(Auto)
Backlight(red)
OFF
Backlight(green) OFF
11.20.3
Outdoor Unit Controller Indicators
Unit has three LED’s.
SB LED is ON when power is ON (230 VAC, even when no communication).
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.
11-12
CONTENT
SM DUO38 1-E.1 GB
CONTROL SYSTEM
11.21
Jumper Settings
11.21.1
Indoor Unit Controller
0 = Open Jumper (disconnect jumper).
1 = Close Jumper (connect jumper).
Self test Jumper – J1
OPERATION
SELF-TEST
NORMAL
J1
1
0
Compensation Jumper – J2
Model
Wall Mounted
Floor/Ceiling
Ducted/cassette
J2 (Default)
0
1
1
Compensation
Activated
Deactivated
Activated
Family selection Jumper – J3, J4 and J5
Family
Reserved
Reserved
Reserved
Wall Mounted (WNG/FLO)
Floor/Ceiling (PXD)
Reserved
Ducted (LS)
Cassette (K)
IDU Model
WNG25
WNG35
WNG50
WNG60
WNG80
PXD25
PXD35
PXD50
K25
K35
K50
LS35
J8
0
0
0
0
0
0
0
1
0
0
1
0
J5
0
0
0
0
1
1
1
1
J4
0
0
1
1
0
0
1
1
J7
0
1
0
1
0
0
1
0
0
1
0
1
J3
0
1
0
1
0
1
0
1
Jumper Setting
J6
J5
0
0
0
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
J4
1
1
0
0
0
0
0
0
1
1
1
1
J3
1
1
0
0
1
0
0
0
1
1
1
0
For wall mounted units Jumpers j7, j8 can be configured by service. All other jumpers on
the above table are factory default (cannot be changed by service).
For unit types as Cassettes, floor ceiling, and ducted, jumpers are set by a model plug.
SM DUO38 1-E.1 GB
CONTENT
11-13
CONTROL SYSTEM
Model selection Jumper – J6, J7
Model
9000 Btu/hr
12000 Btu/hr
18000 Btu/hr
24000 Btu/hr
J7
0
0
1
1
J6
0
1
0
1
J8- Clock/Power Shedding
Operation
Clock
Power Shedding
J8
0
1
J9 – IFAN Cycling Disabling
Display Mode
(wall mounted units only)
LCD
LED
J9
0
1
11.21.2
Outdoor Unit Controller
11.21.2.1
JP9 JUMPER LAYOUT
Reserved (PIN 9)
ODU3 (PIN 7)
ODU2 (PIN 5)
ODU1 (PIN 3)
ODU0 (PIN 1)
GND
GND (PIN 8)
GND
GND (PIN 4)
GND (PIN 2)
11.21.3
(PIN 10)
(PIN 6)
ODU MODEL SELECTION
ODU3
ODU2
ODU1
ODU0
ODU Model
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON (PIN7 & PIN8)
ON (PIN7 & PIN8)
ON (PIN7 & PIN8)
ON (PIN7 & PIN8)
ON (PIN7 & PIN8)
ON (PIN7 & PIN8)
ON (PIN7 & PIN8)
ON (PIN7 & PIN8)
OFF
OFF
OFF
OFF
ON (PIN5 & PIN6)
ON (PIN5 & PIN6)
ON (PIN5 & PIN6)
ON (PIN5 & PIN6)
OFF
OFF
OFF
OFF
ON (PIN5 & PIN6)
ON (PIN5 & PIN6)
ON (PIN5 & PIN6)
ON (PIN5 & PIN6)
OFF
OFF
ON (PIN3 & PIN4)
ON (PIN3 & PIN4)
OFF
OFF
ON (PIN3 & PIN4)
ON (PIN3 & PIN4)
OFF
OFF
ON (PIN3 & PIN4)
ON (PIN3 & PIN4)
OFF
OFF
ON (PIN3 & PIN4)
ON (PIN3 & PIN4)
OFF
ON (PIN1 & PIN2)
OFF
ON (PIN1 & PIN2)
OFF
ON (PIN1 & PIN2)
OFF
ON (PIN1 & PIN2)
OFF
ON (PIN1 & PIN2)
OFF
ON (PIN1 & PIN2)
OFF
ON (PIN1 & PIN2)
OFF
ON (PIN1 & PIN2)
Reserved
A (DCI 25)
B (DCI 35)
C (DCI 50)
D
E (Duo)
F
G
H
I
J
K
L
M
N
O
11-14
CONTENT
SM DUO38 1-E.1 GB
CONTROL SYSTEM
11.22
Test Mode
11.22.1
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
11.22.2
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
High
Auto
Minimum Capacity Setting
Nominal Capacity Setting
Maximum Capacity Setting
During test mode, protections are disabled, except for stop compressor status.
11.23
Additional Functions and Operating Rules (for DUAL
split models)
The DCI SW 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.
11.23.1
System Control Concept
All indoor unit related items control remains the same as in single split applications.
All outdoor unit related control logic remains the same as in single split applications.
The MSMP controller is responsible only for the following control:
•
Setting of system operation mode (cool/heat)
•
Setting the NLOAD for the outdoor units
•
Controlling of the EEV’s
•
Dry contacts control
11.23.2
Compressor Frequency Control
11.23.3
Outdoor Unit NLOAD setting
The MSMP controller gets the NLOAD from each of the indoor units, and sends a combined
NLOAD to the outdoor unit control. The combined NLOAD is a weighted average of the
indoor units NLOAD.
The weight of the indoor units as a function of their nominal capacity:
Indoor Unit Capacity [kW] (kBtu/hr)
2.5
3.5
5.0
7.2
SM DUO38 1-E.1 GB
(9000)
(12000)
(18000)
(24000)
Capacity Code
1
1.5
2
3
CONTENT
11-15
CONTROL SYSTEM
11.23.4
EEV (electronic Expansion valve) Control
EEV opening is defined as EEV = EEVOL + EEVCV
•
EEVOL is the initial EEV opening as a function of the compressor
frequency,
operation mode, unit model and capacity.
•
EEVCV is a correction value for the EEV opening that is based in cooling mode on the
relevant indoor unit super heat and compressor temperature.
•
During the first 10 minutes of compressor operation EEVCV = 0.
11.23.5
System Mode Setting and Reversing Valve (RV) Control
The first indoor unit that is causing the system to be turned ON sets the system mode.
11.23.6
•
•
11.24
Indoor Units Operation when Indoor Unit Mode is Different than
Outdoor Unit Mode
Open louvers according to user selection.
Indoor fan is forced to OFF.
Dry Contacts Control
Dry Contact
Contact = Open
Contact = Short
STBY
No Limit
System is Forced to STBY
Night
No Limit
Outdoor fan speed reduced to low in cooling mode
A dry contact output for Alarm will be shorted when any failure exists in the system.
11-16
CONTENT
SM DUO38 1-E.1 GB
CONTROL SYSTEM
11.25
SW Parameters
11.25.1
Indoor Units SW Parameters
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
ICTVLSpeed
ICT to go down to very low speed
ICTLSpeed
ICT to start in very low speed
ICTHSpeed
ICT to start in increase speed from very low
ICTTSpeed
ICT to enable Turbo fan speed
25
28
30
32
40
Model Depended Parameters:
Wall Mounted Models
DCI 25
DCI 35
NLOAD limits as a function of selected indoor fan speed
MaxNLOADIF1C
40
40
MaxNLOADIF2C
53
53
MaxNLOADIF3C
120
120
MaxNLOADIF4C
127
127
MaxNLOADIF5C
127
127
Indoor Fan speeds
IFVLOWC
700
700
IFLOWC
800
800
IFMEDC
900
950
IFHIGHC
1050
1100
IFTURBOC
1150
1200
IFVLOWH
700
700
IFLOWH
800
850
IFMEDH
950
1000
IFHIGHH
1100
1150
IFTURBOH
1200
1250
Nominal Compressor Frequency
NomLoadC
40
62
NomLoadH
55
67
Cassette Models
Parameter Name
K 25
K 35
K 35S
K 50
NLOAD limits as a function of selected indoor fan speed
MaxNLOADIF1C
40
40
40
40
MaxNLOADIF2C
53
56
56
60
MaxNLOADIF3C
120
90
90
90
MaxNLOADIF4C
127
90
90
90
MaxNLOADIF5C
127
90
90
90
Nominal Compressor Frequency
NomLoadC
40
60
56
63
Parameter name
NomLoadH
SM DUO38 1-E.1 GB
55
69
CONTENT
73
80
11-17
CONTROL SYSTEM
11.25.2
Outdoor Units SW Parameters:
Parameter Name
DCI25
DCI35
DCI 50
DCI50 DUO
Compressor Parameters
MinFreqC
30
33
20
20
MaxFreqC
64
80
85
97
MinFreqH
30
35
20
26
MaxFreqH
81
93
99
106
Step1Freq
60
60
60
60
Step2Freq
70
70
70
80
Step3Freq
90
90
90
90
Frequency limits as a function of outdoor air temperature
MaxFreqAsOATC
50
50
64
62
MaxFreqAsOAT1H
65
75
85
85
MaxFreqAsOAT2H
60
60
60
60
Compressor Over Heating Protection
CTTOH1
94
94
94
90
CTTOH2
98
98
98
95
CTTOH3
102
102
102
102
CTTOH4
105
105
105
105
Compressor Over Current Protection [A]
CCR01
7.1
7.1
10
10
CCR02
7.5
7.5
10.5
10.5
CCR03
7.9
7.9
10.8
10.8
CCR04
8.3
8.3
11.2
11.2
Outdoor Fan Speed (RPM)
VL
200
200
200
200
OFLOWC
550
550
600
600
OFMEDC
700
700
760
830
OFMAXC
830
830
920
920
OFLOWH
550
550
600
600
OFMEDH
700
700
830
920
OFMAXH
830
830
1000
1000
Outdoor Fan Limit Control
11-18
OFLowFreq
45
45
40
40
OFMedFreq
57
57
70
70
CONTENT
SM DUO38 1-E.1 GB
TROUBLESHOOTING
12.
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 3 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 1.6 below.
1.1
Dual Split System Failures and Corrective Actions
No
1
2
SYMPTOM
Power supply indicator at
indoor unit (Red LED) does
not light up.
Indoor fan does not start
(louvers are opened and
Green LED does light up)
3
Compressor does not start
4
7
One indoor is operating, in
cool mode, with no
capacity, and the other unit
has water leaks/freezing
problems
One indoor is operating in
heat mode with a limited
capacity, and the coil on
the other unit is very hot.
Compressor operate but
unit generate no capacity
One unit only is operating
8
All others
5
6
SM DUO38 1-E.1 GB
PROBABLE CAUSE
No power supply
Unit in heat mode
and coil is still not
warm.
The outdoor unit is in
the opposite mode.
Problem with PCB or
capacitor
Jumper settings of
outdoor unit is not
correct
The communication
wires of the two
indoor units are
switched
EEV is stuck in close
position
Communication
problems
Specific problems of
indoor or outdoor
units
CONTENT
CORRECTIVE ACTION
Check power supply from the outdoor. If
power supply is OK, check display and
display wiring. If OK, replace controller.
Change to cool mode and check.
Change operation mode and check if fan
starts.
Change to high speed and Check power
supply to motor is higher than 130VAC
(for Triac controlled motor) or higher
than 220VAC for fixed speed motors, if
OK replace capacitor, if not OK replace
controller
Use diagnostics (see 1.2 below)
information on MSMP board.
Check and correct the communication
wires connection
Check EEV
Use diagnostics information on MSMP
board (see 1.2 below).
Use diagnostics information on MSMP
board (see 1.2 below), and perform
action items as recommended in single
split systems
12-1
TROUBLESHOOTING
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 the two indoor units to Cool/16 degrees/High indoor fan speed, or Heat/30 degrees/High indoor
fan speed, and enter diagnostics. Note: the two indoor units should be set to the same mode and fan
speed.
1.3
Judgment by MSMP Diagnostics
The MSMP controller has 11 LED’s (1 STBY LED, 5 Unit LEDs and 5 Status/Fault LEDs).
STBY LED is ON when power is ON.
5 Unit LEDs refer to four Indoor units and one Outdoor unit. They will turn on one at a time and the
corresponding Indoor/Outdoor unit status/fault code will be displayed on the Status/Fault LEDs. If
the unit is normal (no fault), the unit LED and the corresponding status will be displayed for 5
seconds and move to the next unit LED. On the other hand, if the unit is in fault, the unit LED and
the corresponding fault will be displayed for 10 seconds, and hence more time to read the fault code.
1.3.1
MSMP Fault Code for Outdoor unit:
No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
….
27
…
29
30
31
12-2
Problem
OCT is disconnected
OCT is shorted
CTT is disconnected
CTT is shorted
HST is disconnected (when enabled)
HST is shorted (when enabled)
OAT is disconnected (when enabled)
OAT is shorted (when enabled)
TSUC is disconnected (when enabled)
TSUC is shorted (when enabled)
IPM
Bad Outdoor unit EEPROM
DC under voltage
DC over voltage
AC under voltage
Indoor / Outdoor unit Communication mismatch
No Communication
Illegal Outdoor unit Model
Bad MSMP EEPROM
Heat sink Over Heating
Deicing
Compressor Over Heating
Compressor Over Current
Reserved
Bad Communication
Reserved
No Fault (Heat Mode)
No Fault (Cool, Dry, Fan Mode)
No Fault (Stand By)
CONTENT
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
4
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
3
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
2
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
0
1
SM DUO38 1-E.1 GB
TROUBLESHOOTING
1.3.2
Outdoor unit diagnosis by MSMP and corrective actions
No.
1
Fault
Sensors failures of all types
2
IPM Fault
3
Bad EEPROM
4
DC under/over Voltage
5
AC under Voltage
6
Indoor / Outdoor unit
Communication mismatch
7
No Communication
8
Compressor Lock
9
Bad Communication
SM DUO38 1-E.1 GB
Probable Cause
Electronics HW
problem
Electronics HW
problem
Indoor and Outdoor
controllers are with
different versions
Communication or
grounding wiring is not
good.
Communication quality is
low reliability
CONTENT
Corrective Action
Check sensors connections
or replace sensors.
Check all wiring and jumper
settings, if OK, replace
electronics.
No action, unless special
parameters are required for
unit operation.
Check outdoor unit power
supply voltage
Check outdoor unit power
supply voltage
Replace Indoor controller
Check Indoor to Outdoor
wiring and grounding
Switch unit to STBY and
restart
Check Indoor to Outdoor
wiring and grounding
12-3
TROUBLESHOOTING
1.3.3
MSMP Fault Code for Indoor unit:
No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
17
18
19
20
21
22
23
24
25
26
27
29
30
31
12-4
Problem
5
4
3
2
1
RT-1 is disconnected
0
0
0
0
1
RT-1 is shorted
RT-2 is disconnected
RT-2 is shorted
RGT is disconnected
Reserved
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
0
0
1
0
1
0
1
0
Communication mismatch
0
0
1
1
1
No Communication
No Encoder
Reserved
Outdoor unit fault
Reserved
0
0
0
0
0
1
1
1
1
1
0
0
0
0
1
0
0
1
1
0
0
1
0
1
0
Reserved.
Reserved
Reserved
Defrost protection
Deicing Protection
Outdoor Unit Protection
0
0
0
1
1
1
1
1
1
0
0
0
1
1
1
0
0
0
0
1
1
0
1
1
1
0
1
1
0
1
Indoor Coil HP Protection
Overflow Protection
Reserved
Reserved
EEPROM Not Updated
Bad EEPROM
1
1
1
1
1
1
0
0
0
0
1
1
1
1
1
1
0
0
0
0
1
1
0
0
0
1
0
1
0
1
Bad Communication
Using EEPROM data
1
1
1
1
0
0
1
1
0
1
No Fault (Heat Mode)
No Fault (Cool, Dry, Fan Mode)
No Fault (Stand By)
1
1
1
1
1
1
1
1
1
0
1
1
1
0
1
CONTENT
SM DUO38 1-E.1 GB
TROUBLESHOOTING
1.3.4
Indoor unit diagnosis by MSMP and corrective actions
No.
1
1.4
1.5.1
3
Bad EEPROM
4
DC under/over Voltage
5
AC under Voltage
6
Indoor / Outdoor unit
Communication mismatch
7
No Communication
8
Compressor Lock
9
Bad Communication
Probable Cause
Electronics HW
problem
Electronics HW
problem
Indoor and Outdoor
controllers are with
different versions
Communication or
grounding wiring is not
good.
Communication quality is
low reliability
Corrective Action
Check sensors connections
or replace sensors.
Check all wiring and jumper
settings, if OK, replace
electronics.
No action, unless special
parameters are required for
unit operation.
Check outdoor unit power
supply voltage
Check outdoor unit power
supply voltage
Replace Indoor controller
Check Indoor to Outdoor
wiring and grounding
Switch unit to STBY and
restart
Check Indoor to Outdoor
wiring and grounding
Judgment by MegaTool
1.5
2
Fault
Sensors failures of all
types
IPM Fault
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.
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.
Simple procedures for checking the Main Parts
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).
1.5.2
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.
SM DUO38 1-E.1 GB
CONTENT
12-5
TROUBLESHOOTING
1.5.3
Checking the PCB.
Appearance inspect: Check discoloration, nick and connection of copper foil, short-circuit and open
circuit, component soldering, bulgy and distortion of electrolytic capacitor.
Power circuit check: check voltage of every power level (5V, 12V, 15V) printed on back of PCB.
1.5.4
Checking the Outdoor Fan Motor.
Enter Test Mode (where the OFAN speed is high)
Check the voltage between lead wires according to the normal value as following:
Between red wire and black wire: 310VDC +/- 20V
Between orange wire and black wire: 15VDC +/- 1V
Between yellow wire and black wire: 2-6VDC
1.5.5
Checking the Compressor.
The compressor is brushless permanence magnetic DC motor. Three coil resistances are THE
same. Check the resistance between three poles.
1.5.6
Checking the Reverse Valve (RV).
Running in heating mode, check the voltage between two pins of reverse valve connector,
normal voltage is 220VAC.
1.5.7
Checking the electrical expansion valve (EEV).
The EEV has two parts, drive part and valve. The drive part is a step motor; it is ringed on the
valve. Check the drive voltage (12VDC). When Outdoor unit is power on, EEV shall run and
have click and vibration.
1.6
1.6.1
Precaution, Advise and Notice Items
High voltage in Outdoor unit controller.
Whole controller, including the wires, 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.
1.6.2
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 three minutes
after turned off. Touching the Outdoor unit controller before discharging may cause an electrical
shock. When open the Outdoor unit controller cover, don’t touch the soldering pin by hand or by
any conductive material.
Advise: 1. Open the Outdoor unit controller cover only after five minutes from power down.
2. Measure the electrolytic capacitors voltage before farther checking controller for
safety.
1.6.3
Additional advises
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.
There are sharp fringes and sting on shell. Use gloves when disassemble the A/C units.
12-6
CONTENT
SM DUO38 1-E.1 GB
EXPLODED VIEWS AND SPARE PARTS LISTS
13.
EXPLODED VIEWS AND SPARE PARTS LISTS
13.1
Outdoor Unit: DUO 38 DCI / DELTA
SM DUO38 1-E.1 GB
CONTENT
13-1
EXPLODED VIEWS AND SPARE PARTS LISTS
13.2
Outdoor Unit: DUO 38 DCI / DELTA
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
433218
4526340
4526476
4526475
433215
464600021
4526403
4526774
4526775
4526776
452630201
452630200
4526301
4526403
4527130
204107
4526225
4526968
4526223
4526222
4526226
4526827
452682802
452682800
19
4526344
20
4510677
21
22
23
24
4526221
4526204
433230
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
43
44
13-2
Part No.
4526429
461600010
4522509
4518951
433228
462000000
4519614
4519300
433225
4519607
4526298
433223
4526219
452823600
4526430
4526396
4526224
4526774
4526776
4526970
452911100
4526227
452823600
Description
Front Panel A
Air inlet ring-420
Axial fan OD=401
Resin Motor
Motor Support
Base Painting Assy.
Partition
Outdoor air thermistor(OAT)
Compressor top thermistor(CTT)
Outdoor coil thermistor(OCT)
3/8" Gas Valve(R410A)
3/8" Gas Valve(R410A)
1/4" Liqiud Valve(R410A)
OUTDOOR DC INVERTER CONTROLLER
terminal block
Cable clip Nylon
Power lead wire
Grounding wire with magnetic ring
AC-IN wire
Fuse connected wire
Power lead wire
Electronical expansion valve
EEV coil CAM-MD12FKS-2White connector, 530mm)
EEV coil CAM-MD12FKS-1 (Red, 530mm)
Comp. Insulation1
Nut With Flange M8
Compressor wire
Compressor Assy
Valve Cover
Right side panel (painting plate)
4way valve soldering assy
4-Way valve coil
4-W valve SHF-4H for R410A
Back Side Net
condensor Soldering assy
Painting Top Cover
Nut M5 L
Handle
Left Side Panel Painting Plate
Bridge
Painting Insulation Plate
Fuse 6C(15A,230V)EHK:150-007-00
Therminal sheet
Valve Support(painting plate)
Choke assy. 167-021-01
EMI filter board 901-098-00
Outdoor air thermistor(OAT)
Outdoor coil thermistor(OCT)
Suction tube Thermistor(SUT2)
Sensor/ Suction3
MSMP communcation board 906-002-00
Terminal Plate Assy.
CONTENT
SM DUO38 1-E.1 GB
APPENDIX A
APPENDIX A
INSTALLATION AND OPERATION MANUAL
►
SM DUO38 1-E.1 GB
INSTALLATION MANUAL DUO 38 DCI / DELTA
CONTENT
14-1