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DUO 38 DCI / DAKOTA Indoor Units Outdoor Units WDI 7 WDI 9 WDI 12 DUO 38 DCI REFRIGERANT R410A SM DUO38I 1-A.2 GB HEAT PUMP JUNE – 2009 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 ................ 2 3-1 - 3-1 ................ 1 4-1 - 4-2 ................ 1 5-1 - 5-9 ................ 1 6-1 - 6-2 ................ 1 7-1 ........................ 2 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 .............. 2 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 WDI 7 DCI WDI 9 DCI WDI 12 DCI DUO 38 DCI R410A √ √ √ SM DUO38I 1-A.2 GB CONTENT 1-1 PRODUCT DATA SHEET 2. PRODUCT DATA SHEET 2.1 Outdoor Unit DUO 38 DCI / WDI Specifications. Model Indoor Unit WDI 7 9 12 Model Outdoor Unit DCI DUO 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/50/60Hz 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 DUO38I 1-A.2 GB CONTENT 2-1 PRODUCT DATA SHEET 2.2 Indoor Units Data 2.2.1 WDI 7 DCI Specifications Model Indoor Unit / Type WDI 7 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 400 350 680 740 300 185 265 WDI 9 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/ 50/60 Crossflow *1 V/Ph/Hz WDI 9 DCI / Wall Mounted FLARE 220-240 / 1/ 50/60 Crossflow *1 V/Ph/Hz 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 DUO38I 1-A.2 GB PRODUCT DATA SHEET 2.2.3 WDI 12 DCI Specifications Model Indoor Unit / Type WDI 12 DCI / Wall Mounted Installation Method FLARE Power Supply V/Ph/Hz 220-240 / 1/ 50/60 Fan Type & Quantity Crossflow *1 INDOOR 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 Condensate Drain Tube I.D. 450 mm 350 16 Dimensions Weight W/H/D mm kg 840 250 8.0 185 Package Dimensions W/H/D mm 930 320 265 Stacking Height 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. 2.2.4 Indoor Units Combinations Cooling Indoor Units Combinations Room A Room B Total Capacity Heating Power Input Room A Room B Total Capacity Power Input [W] [W] [W] [W] [W] [W] [W] [W] 7 2200 - 2200 (1500 2600) 675 (450 - 850) 2500 - 2500 (1200 - 3100) 750 (450 - 1000) 9 2500 - 2500 (1500 3000) 750 (450 - 980) 2800 - 2800 (1200 – 3500) 910 (450 – 1220) 12 3500 - 3500 (1500 4100) 1030 (450 – 1250) 3600 - 3600 (1200 - 4100) 1030 (450 - 1150) 7+7 1850 1850 3700 (1500 1000 (450-1800) 4700) 2150 2150 4300 (1200 – 5200) 1200 (450 – 1800) 7+9 1850 1950 3800 (1500 4800) 1050 (450 1800) 2150 2250 4400 (1200 – 5300) 1240 (450 – 1800) 7+12 1850 3050 4900 (1500 5200) 1350 (450 1800) 2150 3250 5400 (1200 – 5900) 1520 (450 – 1800) 9+9 1950 1950 2250 4500 (1200 - 6200) 1280 (450 - 1800) 1950 3050 1100 (450 1800) 1400 (450 1800) 2250 9+12 3900 (1500 5500) 5000 (1500 5500) 2250 3250 5500 (1200 - 6200) 1560 (450 - 1800) SM DUO38I 1-A.2 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 DUO38I 1-A.2 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 OUTLINE DIMENSIONS 4.1 Indoor Unit: WDI 7, WDI 9 DCI MOUNTING TEMPLATE TO BE USED FOR LOCATION OF INDOOR UNIT ON THE WALL CEILING 306 141 58 INDOOR UNIT OUTLINE 40 52 244 160 46 Min50 4. 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: WDI 12 DCI ´¶¼µ»°µ®»¬´·³¨»¬ »¶©¬¼º¬«­¶¹³¶ª¨»°¶µ ¶­°µ«¶¶¹¼µ°»¶µ»¯¬¾¨³³ ª¬°³°µ® ŜŠ śŗ Ŝř Řŝŗ řśś śŗŝ Şŗ ´íòŜŗ °µ«¶¶¹¼µ°»¶¼»³°µ ŘŞř Ŝŗ şŗ Ŝŗś şŚŗ ŘŚŞ »¼©°µ®¾¨³³¶·¬µ°µ® ­¶¹¹¬¨¹¹¶¼»°µ® »¼©°µ®¾¨³³¶·¬µ°µ® ­¶¹¹¬¨¹³¬­»¹¶¼»°µ® şśŗ ŘşŜ ¨°¹°µ»¨²¬ řŜŗ ¨°¹°µ»¨²¬ ¨°¹¶¼»³¬» SM DUO38I 1-A.2 GB CONTENT 4-1 OUTLINE DIMENSIONS 4.3 4-2 Outdoor Unit: DUO 38 DCI CONTENT SM DUO38I 1-A.2 GB PERFORMANCE DATA 5. PERFORMANCE DATA 5.1 WDI 7-7 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 DUO38I 1-A.2 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 DUO38I 1-A.2 GB PERFORMANCE DATA 5.2 WDI 9-9 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 DUO38I 1-A.2 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 DUO38I 1-A.2 GB PERFORMANCE DATA 5.3 WDI 9-12 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 DUO38I 1-A.2 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 DUO38I 1-A.2 GB PERFORMANCE DATA 5.4 Capacity Correction Factor Due to Tubing Length (OneWay) 5.4.1 WDI 7 / 9 / 12 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 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 DUO38I 1-A.2 GB 6 8 10 12 14 16 18 20 Tubing Length [m] CONTENT 22 24 30 5-7 PRESSURE CURVES 6. PRESSURE CURVES 6.1 Model: WDI 7-7, WDI 9-9 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 DUO38I 1-A.2 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 DUO38I 1-A.2 GB PRESSURE CURVES 6.2 Model: WDI 9-12 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 2500 2250 2000 22/ 15 24/ 17 27/ 19 29/ 21 1750 1500 32/ 23 10 15 20 25 30 35 40 45 Outdoor DB Temperature [ºC] SM DUO38I 1-A.2 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 DUO38I 1-A.2 GB ELECTRICAL DATA 7. ELECTRICAL DATA Power Supply 1 PH, 220-240 VAC, 50/60Hz Connected to Outdoor Maximum Current 13.7 A Inrush Current 35 A Starting Current 10 A Circuit breaker 16 A Power supply wiring - No. x cross section 3 X 2.5 mm2 Interconnecting cable - No. x cross section 2 X 4 X 1.5 mm2 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. SM DUO38I 1-A.2 GB CONTENT 7-1 SM DUO38I 1-A.2 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 JP60 J30 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 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 6 ≤ OAT < 15 MaxFreqAsOATC 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 DUO38I 1-A.2 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 DUO38I 1-A.2 GB CONTENT 11-3 CONTROL SYSTEM 11.7 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. 11.8 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. 11.9 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 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 ICT > 55 53 < ICT ≤ 55 49 < ICT ≤ 53 47 < ICT ≤ 49 45 < ICT ≤ 47 43 < ICT ≤ 45 ICT ≤ 43 11-6 ICT Trend ICT Fast Decreasing SC D1 SR SR Norm Norm ICT Trend Decreasing No Change Increasing SC D1 SR SR Norm Norm SC D2 D1 SR SR Norm Normal SC D2 D2 D1 SR SR CONTENT Fast Increasing SC D2 D2 D2 D1 SR SM DUO38I 1-A.2 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 W Stop-Compresor CCROC4 HzDown2 CCROC3 HzDown1 CCROC2 Stop-Rise CCROC1 Normal SM DUO38I 1-A.2 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 DUO38I 1-A.2 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 T3 COOL OFAN T3 ON OFF EEVDeicerOpen EEV Any T1 = T2 = 36 seconds, T3 = 6 seconds 11.17.7 Condensate Water Over Flow Protection P1 P2 P3 P4 Level Connector Top View 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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) (Auto) Backlight(red) 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 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 DUO38I 1-A.2 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 DUO38I 1-A.2 GB TROUBLESHOOTING 1.3.4 Indoor unit diagnosis by MSMP and corrective actions 2 Fault Sensors failures of all types 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 No. 1 1.4 x x x 1.5.1 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 x x x 1.5 Probable Cause 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 DUO38I 1-A.2 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: x Between red wire and black wire: 310VDC +/- 20V x Between orange wire and black wire: 15VDC +/- 1V x 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 DUO38I 1-A.2 GB EXPLODED VIEWS AND SPARE PARTS LISTS 13. EXPLODED VIEWS AND SPARE PARTS LISTS 13.1 Outdoor Unit: DUO 38 DCI SM DUO38I 1-A.2 GB CONTENT 13-1 EXPLODED VIEWS AND SPARE PARTS LISTS 13.2 Outdoor Unit: DUO 38 DCI No. Part No. 1 2 3 4 5 6 7 8 9 10 11 Description Quantity 17 433218 4526340 4526476 452889600R 433215 464600021 4526299 467400026 467400055 467400056 452630201 452630200 461000004 467300025R 4527130 204107 4526226 4526968 452926600R 4526827 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 Power Cord Wire Electronical expansion valve 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 3 1 1 2 2 18 452682802 EEV coil CAM-MD12FKS-2 White connector, 530mm) 1 452682800 4526344 4526221 4510677 4526204 465340083 4526429 461600010 4522509 4518952 433228 462000000 4519614 4519300 4519607 433225 4526298 464860054 4526219 452823600 4526430 4526396 467300024R 467400060 467400061 4526227R 452823600 EEV coil CAM-MD12FKS-1 (Red, 530mm) Comp. Insulation1 Compressor wire Nut With Flange M8 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 Left Side Panel Painting Plate Handle 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 Suction Temperature Sensor(SUCT) Suction Temperature Sensor(SUCT) MSMP communcation board 906-002-00 Terminal Plate Assy. 1 1 1 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 12 13 14 15 16 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 43 44 13-2 CONTENT SM DUO38I 1-A.2 GB APPENDIX A APPENDIX A INSTALLATION AND OPERATION MANUAL ► SM DUO38I 1-A.2 GB INSTALLATION MANUAL DUO 38 DCI CONTENT 14-1 ">
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