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MULTI SPLIT TYPE, HEAT PUMP AIR CONDITIONERS
Technical service manual
R410A Cassette Inverter multi Series
Indoor Models
SMF-C09AI
SMF-C12AI
SMF-C18AI
Outdoor Models
SMF-4E27AI
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CONTENTS 1. Features 2. Specification 3. Outline and dimension 4. Indoor unit combination 5. Capacity table 6. Wiring diagram 7. Electronic control functions 8. Exploded view 2
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1. Features: 1) Fashion design, quality life; 2) Low operation noise; 3) High efficiency screw fan; 4) Equal, fast, wide-angle cooling, more comfortable. 3
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2.Specification indoor unit Model SMF-C09AI SMF-C12AI SMF-C18AI Power supply Ph-V-Hz 1Ph,220-240V~,50Hz 1Ph,220-240V~,50Hz 1Ph,220-240V~,50Hz Cooling Capacity BTU/h 9,000 12,000 18,000 Heating Capacity BTU/h 11,000 13,000 20,500 Capacity Design Pressure (Hi/Lo) Mpa 4.2/2.5 4.2/2.5 4.2/2.5 Max. Operating Pressure Mpa 3.7 3.7 3.7 Model YDK45-4F YDK45-4F YDK45-4F Brand Welling Welling Welling Indoor fan motor 80 80 80 Power Input W Cap
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Net/Gross weight(body) Kg 21/28 21/28 28/36 Dimension (W*H*D) mm 650x30x650 650x30x650 650x30x650 Indoor Packing (W*H*D) mm 715x115x715 715x115x715 715x115x715 unit(panel) Net/Gross weight(panel) Kg 3/5 3/5 3/5 2 Application area m 14-21 18-26 35-40 Qty per 20’/40’/40’HQ Pieces 5
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OUTDOOR UNIT: Outdoor Model SMF4E27AI Indoor unit combination single double Treble Quadplex Power supply Ph-V-Hz 1Ph,220-240V~,50Hz Cooling Capacity range Btu/h 7000~18000 14000~24000 21000~26000 27000 Rated input power range W 750~1870 1450~2430 2050~2600 2650 Cooling Rated current range A 3.1~7.8 6.1~10.1 8.56~10.9 11.1 EER 10.2 Heating Capacity range Btu/h 9000~18000 16000~25000 21000~27000 28000 Rated input power range W 850~1790 1470~2520 2020~2650 2700 Heating Ra
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Input W 169(HIGH) Capacitor uF 5uF/500VAC Speed r/min 900(HIGH) a.Number of rows 2 b.Tube pitch(a)x row pitch(b) mm 25.4×22 c.Fin spacing mm 1.5 Outdoor coil d.Fin type (code) Hydrophilic aluminium e.Tube outside dia.and type mm φ9.53 innergroove tube f.Coil length x height x width mm 850×810×44 g.Number of circuits 2 Outdoor air flow m3/h 3500 Outdoor noise level dB(A) 57 Dimension(W*H*D) mm 895X860X330 Outdoor unit Packing (W*H*D) mm 1043X915X395 Net/Gross wei
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Qty’per 20’ /40’ /40'HQ set Notes: 1. Nominal cooling capacities are based on the following conditions: Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB; Equivalent ref. Piping: 8m(horizontal) Outdoor operating frequency:78Hz Indoor combination:7K X4, setting temp.:17℃,setting fan speed: high speed. 2. Nominal heating capacities are based on the following conditions: Indoor temp: 20°CDB; Outdoor temp: 7°CDB, 6°CWB; Equivalent ref. Piping: 8m(horizontal) Outdoor operating fr
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A 422 28.5 580(Body) 600(Ceiling hole) 611(Hook-location) 650(Panel) 3.Outline and dimension Indoor unit(7k/9k/12k/18k): Hook Body Nut Ceiling Panel 600 Chart 4 401(Hook-location) 580(Body) 67 600(Ceiling hole) 650(Panel) Outdoor unit 1013 895 163 590 141 COMP 9 355 330 300 Drain side and Tubing side 265
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4.Indoor unit combination: Caution on combination The one-drive-four outdoor unit SMF-4E27AI nominal cooling capacity is 8kw(under condition of ambient temp. 35℃db/24℃wb, indoor temp. 27℃db/19℃wb). According to refrigeration design criterion, total indoor unit capacity should be equal to outdoor capacity, otherwise, we can not guarantee best performance and safe operation. Although, we made special design on refrigeration system regarding customer’s requirements. Based on this, when indoo
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5. Capacity table SMF-4E27AI (7k+7k+7k+7k) COOLING OUTDOOR TEMPERATURE DRY Indoor 21ºC 25ºC 30ºC 35ºC 40ºC 45ºC Conditions Total capacity kW 7.63 7.30 7.03 6.64 6.37 6.17 21ºC D Sensitive capacity kW 6.11 5.84 5.63 5.31 5.10 4.94 15ºC W Input kW. 1.95 2.23 2.51 2.79 3.07 3.35 Total capacity kW 8.36 7.99 7.70 7.27 6.98 6.76 24ºC D Sensitive capacity kW 6.69 6.40 6.16 5.81 5.58 5.41 17ºC W Input kW. 2.06 2.36 2.65 2.95 3.24 3.53 Total capacity kW 9.09 8.69 8.37 7.90 7.58 7.35
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6. WIRING DIAGRAM Indoor unit: 12
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Outdoor unit (SMF-4E27AI) 13
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7. Electric control functions: 7.1 Protection 1. 3 minutes delay at restart for compressor. 2. Temperature protection of compressor top, compressor stops when the temp. of top of compressor is more than 120℃, compressor runs when the temp. of top of compressor is less than 105℃. 3. When AC voltage ≥ 270V for 30 seconds, Outdoor Unit stops operation and alarms. When AC voltage ≤ 260V for 30 seconds, Outdoor Unit resumes operation. 4. Inverter module protection, Inverter module Protect
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7.2.2 Dehumidifying mode 1.The indoor fan is fixed in low speed 2. Low room temperature protection: When room temperature decreases to below 10℃, indoor fan stop, when room temperature restores to over 12℃, indoor fan start. 3. At dehumidifying mode, the anti-freezing function of the indoor heat exchanger is the same as that of cooling mode. 7.2.3 Heating mode 1. Indoor Fan actions at heating mode Indoor Fan can be set at HIGH/MID/LOW/AUTO by using a remote controller, but Anti-cold
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If one of following conditions is satisfied, end the defrost and turn into heating mode: a. The defrost time has reached to 10 minutes. b. When the temperature of outdoor heat exchanger rises up to 15°C. 3. Defrosting Actions: a. Compressor runs. b. 4 way valve switches off, c. Outdoor fan switches off d. Indoor fan running according to anti-cold wind function in heating mode. 4. Automatic operation mode The air conditioner automatically selects one of the following operation modes:
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1. The maximum length of timer is 24 hours and the minimum resolving power is 15 minutes. 2. Timer on: first turn off the A/C, the A/C will be automatically on at the set time. 3. Timer off: first turn on the A/C, the A/C will be automatically off at the set time 4. Timer on/off function( on time is earlier than off time): first turn off the A/C, it will be automatically on at set time, and later be off at the set time, then unit turns on at set time. 5. Timer off/on function( off time is
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7.9 Outdoor unit LED display function: 1. When stand-by it display number of indoor unit online; 2. When operation it display frequency of outdoor unit; 3. When defrost it display “df”; 4. When a protection or error occurred, it display as the following table: Display Explanation E0 EEPROM error E1 No 1 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective E2 No 2 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective E3 No 3 Indoor units
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2. Fan state: Display Corresponding mode 0 Off 1 Low fan 2 High fan 3. Opening degree of EXV: Opening degree equals the display data times 8; 4. Number of indoor unit The indoor unit that can communicate with outdoor unit normally. 7.11 Outdoor fan speed control There is one fan with two-speed, the fan speed is controlled according ambient temp. After the compressor stop, 30 seconds later the fan stop. When cooling: > 27 High speed Ambient temp.rise <27 Low speed Ambient >25
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