Omega OTEC IECS-D Series Technical Manual
Round-flow ceiling cassette
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- Service manual (16 pages) ,
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Summary of Contents for Omega OTEC IECS-D Series
- Page 1 IECS-D Series Round-Flow Ceiling Cassette Technical Manual...
- Page 2 Applicable Models: Indoor units: Outdoor unit ICHD009J0A-DMG026 Four-Way Cassette ICHD012J0A-DMG035 IECS018J3A-DWG053 ICHD018J0A-DMG053 IECS024J3A-DWG071 ICHD024J0A-DMG071 IECS031J3A-DWG090 ICHD031J0A-DMG090 IECS036J3A-DWG105 ICHD036J0A-DMG105 IECS042J3A-DWG120 ICHD042J0A-DMG120 IECS048J3A-DWG140 ICHD048J0A-DMG140 ICHD060J0A-DMG160...
- Page 3 Content Part. 1 General information ............2 Part. 2 Outdoor Unit ..............6 Part. 3 Indoor Unit ..............18 Part. 4 Installation & Troubleshooting ........107...
- Page 4 Part. 1 General information 1. Model Names of Indoor/Outdoor Units ......3 2. External Appearance ............4...
- Page 5 1. Model Names of Indoor/Outdoor Units Indoor unit Outdoor unit Type Model Power supply Model Power supply Four-way Cassette IECS018J3A 220-240V~, 1Ph, 50Hz ICHD018J0A 220-240V~, 1Ph, 50Hz Four-way Cassette IECS024J3A 220-240V~, 1Ph, 50Hz ICHD024J0A 220-240V~, 1Ph, 50Hz Four-way Cassette IECS031J3A 220-240V~, 1Ph, 50Hz ICHD031J0A 220-240V~, 1Ph, 50Hz...
- Page 6 2. External Appearance 2.1 Indoor units IECS018J3A / IECS024J3A / IECS031J3A / IECS036J3A / IECS042J3A / IECS048J3A / IECS060J3A 2.2 Outdoor unit ICHD009J0A / ICHD012J0A / ICHD018J0A/ ICHD024J0A ICHD031J0A/ ICHD036J0A / ICHD042J0A / ICHD048J0A/ ICHD060J0A...
- Page 7 Part. 2 Outdoor Unit 1. Specifications ..............7 2. Dimension (Unit:mm) ............9 3. Refrigerant circuit ............. 10 4. Wiring Diagrams ..............14 5. Electric Characteristics ............ 16 6. Sound Levels ..............17 7. Accessories ............... 17...
- Page 8 Part. 3 Indoor Unit 1.Specifications ............... 19 2.Dimensions (Unit: mm) ............21 3.Wiring Diagrams ..............32 4.Capacity Table ..............23 5.Static Pressure Curve ............46 6.Electric Characteristics ............48 7.Sound Levels ................ 49 8. Accessories ................. 49...
- Page 9 Table 1.4: IECS018, 024, 031, 036 specifications Model name IECS018J3A IECS024J3A IECS031J3A IECS036J3A Power supply 1-phase, 220-240V, 50Hz Capacity 5300(1050~6200) 7200(2400~8200) 9000(2800~9400) 10500(3200~11200) Input (IDU+ODU) 1600(330~2520) 2240(560~2840) 3000(680~3480) 3500(820-4200) Cooling Input (IDU) 3.31 3.21 3.00 3.00 Capacity 6000(1340~6600) 8200(1880~8800) 9900(2600~10200) 11600(3300~12500) Input (IDU+ODU) 1740(350~2250)
- Page 10 Table 1.5: IECS042, 048 specifications Model name IECS042J3A IECS048J3A Power supply 1-phase, 220-240V, 50Hz Capacity 12000(3200~12500) 14000(4200~14200) Input (IDU+ODU) 4850(800~5200) 6000(1200~6200) Cooling Input(IDU) 2.47 2.33 Capacity 13200(3300~13800) 15400(4500~16000) Input (IDU+ODU) 4500(700~4900) 4800(1000~5200) Heating Input (IDU) 2.93 3.21 Model YDK65-6S YDK65-6S Type Ac motor Fan motor...
- Page 11 2.2 Four-way Cassette Refrigerant piping vent (gas side L) Refrigerant piping vent (liquid side K) ϕ32 (outer diam eter of water discharge pipe) ϕ75 (Fresh air inlet) Mounting hooks Hexagon nut (Level adjustment) Ceiling Panel Main body of air conditioner Water discharge pipe Main body of air conditioner...
- Page 12 Model IECS018J3A- IECS024J3A- IECS031J3A- IECS036(42,48)J3A- DWG-105(120,14) DWG-053 DWG-071 DWG-090 Ф6.4 Ф6.4 Ф9.5 Ф9.5 Ф12.7 Ф15.9 Ф15.9 Ф15.9...
- Page 13 3.2 Four-way Cassette IECS018J3A-DWG053 / IECS024J3A-DWG071 Error Description Error Code IDU EEPROM error Error Description Error Code Indoor-outdoor communication fault Main control chip and driver chip communication Indoor fan stall fault fault ODU temperature sensor or EPROM fault Compressor current sampling circuit fault ODU temperature sensor fault Compressor start-up fault ODU EPROM fault...
- Page 14 IECS031J3A-DWG090 / IECS036J3A-DWG105 / IECS042J3A-DWG120 / IECS048J3A-DWG140 Attention:Please use three core shielding wire, and the shielding layer must be connected to the of sheet metal Yellow/Green Drawings are for reference only. ENC1 Indoor Main Control Board Brown Black Yellow/Green OFF to indicate that the temperature compensation in cooling mode t = 0 ℃...
- Page 15 4.2 Four-way Cassette Model IECS018J3A-DWG053 Cooling mode: Indoor air temperature (°C WB/DB) Outdoor air Capacity(kW) 14/20 16/23 18/26 19/27 20/28 22/30 24/32 temperature (°C DB) Indoor Airflow(m3/h) 10.00 6.45 4.44 6.60 4.48 6.70 4.48 6.80 4.61 7.00 4.81 7.20 5.01 7.30 5.14 12.00...
- Page 16 Model IECS024J3A-DWG071 Cooling mode: Indoor air temperature (°C WB/DB) Capacity(kW) Outdoor air 14/20 16/23 18/26 19/27 20/28 22/30 24/32 temperature (°C DB) Indoor Airflow(m3/h) 10.00 8.64 5.34 8.88 5.41 9.04 5.43 9.20 5.61 9.44 5.82 9.68 6.04 9.80 6.18 12.00 8.48 5.30 8.72...
- Page 17 Heating mode: Indoor air temperature (°C DB) Capacity (kW) Outdoor air temperature (°C) Indoor Airflow(m3/h) -15.30 -15.00 3.62 3.49 3.36 3.30 3.23 3.10 -13.00 -12.60 4.15 4.02 3.89 3.82 3.76 3.63 -11.00 -10.50 4.61 4.48 4.35 4.29 4.22 4.09 -10.00 -9.50 4.83 4.70...
- Page 18 Model IECS031J3A-DWG090 Cooling mode: Indoor air temperature (°C WB/DB) Capacity(kW) Outdoor air 14/20 16/23 18/26 19/27 20/28 22/30 24/32 temperature (°C DB) Indoor Airflow(m3/h) 10.00 10.94 7.31 11.18 7.38 11.34 7.40 11.50 7.52 11.74 7.76 11.98 8.01 12.10 8.17 12.00 10.74 7.25 10.98...
- Page 19 Heating mode: Indoor air temperature (°C DB) Capacity (kW) Outdoor air temperature (°C) Indoor Airflow(m3/h) -15.30 -15.00 4.82 4.66 4.50 4.42 4.34 4.18 -13.00 -12.60 5.42 5.26 5.10 5.02 4.94 4.78 -11.00 -10.50 5.95 5.79 5.63 5.55 5.47 5.31 -10.00 -9.50 6.20 6.04...
- Page 20 Model IECS036J3A-DWG105 Cooling mode: Indoor air temperature (°C WB/DB) Capacity(kW) Outdoor air 14/20 16/23 18/26 19/27 20/28 22/30 24/32 temperature (°C DB) Indoor Airflow(m3/h) 10.00 12.80 8.18 13.10 8.23 13.30 8.21 13.50 8.32 13.90 8.70 14.30 9.10 14.50 9.37 12.00 12.56 8.15 12.86...
- Page 21 Heating mode: Indoor air temperature (°C DB) Capacity (kW) Outdoor air temperature (°C) Indoor Airflow(m3/h) -15.30 -15.00 5.84 5.64 5.44 5.34 5.24 5.04 -13.00 -12.60 6.51 6.31 6.11 6.01 5.91 5.71 -11.00 -10.50 7.10 6.90 6.70 6.60 6.50 6.30 -10.00 -9.50 7.38 7.18...
- Page 22 Model IECS042J3A-DWG120 Cooling mode: Indoor air temperature (°C WB/DB) Capacity(kW) Outdoor air 14/20 16/23 18/26 19/27 20/28 22/30 24/32 temperature (°C DB) Indoor Airflow(m3/h) 10.00 14.30 9.42 14.60 9.50 14.80 9.52 15.00 9.53 15.40 9.90 15.80 10.28 16.00 10.54 12.00 14.06 9.37 14.36...
- Page 23 Heating mode: Indoor air temperature (°C DB) Capacity (kW) Outdoor air temperature (°C) Indoor Airflow(m3/h) -15.30 -15.00 6.80 6.59 6.38 6.27 6.16 5.94 -13.00 -12.60 7.54 7.33 7.12 7.01 6.90 6.68 -11.00 -10.50 8.20 7.99 7.78 7.67 7.56 7.34 -10.00 -9.50 8.51 8.30...
- Page 24 Model IECS048J3A-DWG140 Cooling mode: Indoor air temperature (°C WB/DB) Capacity(kW) Outdoor air 14/20 16/23 18/26 19/27 20/28 22/30 24/32 temperature (°C DB) Indoor Airflow(m3/h) 10.00 16.00 10.24 16.75 10.60 17.25 10.79 17.75 11.13 18.25 11.56 18.75 12.00 19.00 12.28 12.00 15.70 10.13 16.45...
- Page 25 Heating mode: Indoor air temperature (°C DB) Capacity (kW) Outdoor air temperature (°C) Indoor Airflow(m3/h) -15.30 -15.00 8.22 7.96 7.70 7.57 7.44 7.18 -13.00 -12.60 9.06 8.80 8.54 8.41 8.28 8.02 -11.00 -10.50 9.80 9.54 9.28 9.15 9.02 8.76 -10.00 -9.50 10.15 9.89...
- Page 26 5. Static Pressure Curve Model: ICHD009J0A-DMG026 Air flow (m Note: SH:Super High Air Speed H:High Air Speed M:Middle Air Speed L:Low Air Speed...
- Page 27 Model: ICHD012J0A-DMG035 Air flow (m Model: ICHD018J0A-DMG053 1000 Air flow (m Model: ICHD24J0A-DMG071 900 1000 1100 1200 1300 Air flow (m...
- Page 28 Model: ICHD031(36,42,38)J0A-DMG090(105,120,140) 1100 1300 1500 1700 1900 Air flow (m Model: ICHD060J0A-DMG160 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 Air flow (m...
- Page 29 6. Electric Characteristics Power supply Indoor fan motors Model name Rated motor Volts Min. volts Max. volts output (kW) IECS018J3A 220-240 0.475 0.026 0.38 IECS024J3A 220-240 0.475 0.03 0.38 IECS031J3A 220-240 0.475 0.03 0.38 IECS036J3A 220-240 0.975 0.05 0.78 IECS042J3A 220-240 0.9875 0.065...
- Page 30 7.2 Four-way Cassatte 1.4m Unit Number Model Noise level under three speeds of fan (dB(A)) IECS018J3A-DWG053 38/36/35 41/39/38 IECS024J3A-DWG071 IECS031J3A-DWG090 43/39/38 IECS036J3A-DWG105 46/39/38 IECS042J3A-DWG120 46/39/38 IECS048J3A-DWG140 48/41/39 8. Accessories Accessory name of indoor unit Qty. Purpose Installation Manual Installation Insulation piping For insulation of piping connections Operating Instructions of air conditioner User Manual...
- Page 31 Part. 4 Installation & Troubleshooting 1. Notes ................... 2. Installation of Duct Type Indoor Units ......3. Installation of Outdoor Units ..........4. Water discharge piping layout ......... 5. Connection of Refrigerant Pipe ........6. Electric Connection............7. Duct Design Scheme............8.
- Page 32 1. Notes 1.1 Selecting an installation site for IDU • Enough space for installation and maintenance. • The ceiling is level, and the structure is strong enough to support the weight of IDU; take reinforcement measures when necessary. • Airflow in/out of the machine is not obstructed, and the external air exerts minimum impact. •...
- Page 33 2. Installation of Four-way Cassette 2.1 Installating space...
- Page 34 > 1000 mm > 1000 mm Indoor unit A(mm) H(mm) 018, 024, 031 ≥260 036, 042, 048 ≥330 2.2 Installation of the Main Body Existing ceiling (which must be level) ◼ Drill a 910 mm × 910 mm square hole into the ceiling based on the layout of the installation board (see Figures 1, 2, and 3).
- Page 35 a. Before you mount the ceiling, make sure it is level. b. Operate according to the above description (step 1 in "Existing ceiling"). Operate according to the above description (step 3 in "Existing ceiling"). Remove the installation board. ◼To match the existing structure, set the screw pitch according to the product dimensions shown below. Wooden Structure Place the square bar by crossing the beams and set the lifting bolts Original concrete slab Structure...
- Page 36 45° ◼Remove the screws from all four corners of the installation cover plate to release the cover plate rope, and take out the cover plate, facing outwards. ◼Installing the panel 1. Align the "PIPING SIDE" and "DRAIN SIDE" sections marked on the panel with the corresponding piping connector and water discharge connector of the unit.
- Page 37 ◼Caution The plastic cover plate protruding from the swing motor must be embedded within the concave area of the sealing plate.Make sure the wiring of the swing motor is not caught inside the sealed foam. Improper screw tightening will result in the fault shown in the right figure. If there is still a gap between the ceiling and panel after the screws are tightened, re-adjust the IDU height (Figure I).
- Page 38 5. Installation of Outdoor Units 5.1 Installating space Ensure enough space required for installation and maintenance. (Unit: mm) (Wall or obstacle) Maintenance cable and Air inlet surface >300 pipeline surface >300 Air inlet surface >600 >2000 Air outlet surface >600 Fixed with a bolt 5.2 Handling and installation •...
- Page 39 • When concentrating and installing the water discharge piping, arrange the pipes according to the diagram provided in Figure 3. • The end of the water discharge pipe must be more than 50 mm above the ground or from the base of the water discharge slot.
- Page 40 to the water outlet joint to discharge condensation water from the ODU during heating. 7. Connection of Connecting Pipe 7.1 Length and level difference requirements for the pipe connections of IDU and ODU Product Model Maximum length(m) Maximum level difference(m) Maximum number of bends(m) ICHD009(12)J0A-DMG026(35) ICHD018(24)J0A-DMG053(71)
- Page 41 3. After the refrigerant pipe is connected to the IDU and ODU, discharge the air according to the column Air Discharge. After the air is discharged, tighten the service nut. Precautions for flexible pipes: • Do not bend a pipe more than 90 degrees (see the figure below). •...
- Page 42 Insert the pipe into the connection nut flare. Outer A(mm) diameter(mm) Max. Min. Φ6.4 Φ9.5 12.4 12.0 Φ12.7 15.8 15.4 Φ15.9 19.0 18.6 Φ19.1 23.3 22.9 7.5 Fasten the nut Align the connection pipe, tighten the connecting nut with a hand, and tighten them with a wrench as shown in the figure below.
- Page 43 Manifold valve Multimeter Pressure gauge -755mmHg Hi handle Lo handle Charging hose Charging hose Vacuum pump Low pressure valve Adding Refrigerant • If the one-way pipe length is less than 5m (including 5m), the refrigerant charging amount is determined according to the nameplate. •...
- Page 44 requirements of the product (including reliable grounding, power leakage, and wire-diameter electrical load). Do not install the product before the modification if the electrical installation requirements of the product are not met. ◼ Air conditioners must use a dedicated power supply. The power voltage must conform to the rated voltage. ◼...
- Page 45 Four-way Cassette: IECS018(24)J3A-DWG053(71) IECS031(36,42,48)J3A-DWG090(105,120,140) Note: The communication wire should be 3-core shielding wire, and the sheilding wire layer must be connected the earth of sheet metal. 10. Trial Run 1. Conduct the test run only after all installation tasks have been completed. Check the following items during the test run.
- Page 46 ◼ Water discharge is smooth. ◼ Open the check valves on the gas and liquid sides. ◼ Heat insulation is complete. ◼ Connect to the power supply to let the air conditioner warm up first. ◼ Grounding cables have been properly connected. 3.
- Page 47 Compressor phase loss protection Immediate display, spot check Compressor zero speed protection Immediate display, spot check Outdoor 341 main chip drive synchronization fault Immediate display, spot check Compressor stall protection Immediate display, spot check Compressor lock protection Immediate display, spot check Compressor out-synchronous protection Immediate display, spot check Compressor over-current protection...
- Page 48 ODU DC fan error After continuing 10 minutes Indoor unit displays, spot check available Water level alarm error Immediate display, spot check TL sensor error Immediate display, spot check E6 error occurs six times in one hour, requiring power failure Immediate display, spot check recovery PFC feedback resistance failure...
- Page 49 2. Spot check query function (Press the button on the display board to spot check the system parameters) IECS018(24)J3A-DWG053(71) Sequence number Spot check parameter contents Remarks Indoor unit T1 temperature Actual value, temperature accurate to 0.5 ℃ Indoor unit T2 temperature Actual value, temperature accurate to 0.5 ℃...
- Page 50 Compressor current value The actual value Actual voltage The actual value DC Bus Voltage Machine model Network address of indoor unit(0―63) Address of outdoor unit in centralized control system 0-7 is valid (reserved) Indoor unit program version number Outdoor unit program version number The last fault or protection code If not exist, display “E-”...
- Page 51 11.2 Fault and troubleshooting Fault Cause Solution Starting failure Power failure Wait for the power supply to be restored. Power switch is off Turn on the power The fuse of the power switch is blown. Replace the burnt fuse. The time set for the timed power-on has not arrived. Replace the batteries.
- Page 52 1. Specifications Table 1.1: ICHD009, 012, 018, 024 specifications Model name ICHD009J0A ICHD012J0A ICHD018J0A ICHD024J0A Power supply V/Ph/Hz 220-240/1/50 Power input 649(210~1350) 1159(240~1460) 1602(370~2380) 2115(520~2890) Cooling Power input (Maximum) 1620 1900 2800 3500 Power input 859(190~1250) 1209(230~1570) 1902(390~2490) 2615(460~3310) Heating Power input (Maximum) 1900 1720...
- Page 53 Table 1.2: ICHD031, 036, 042, 048 specifications 10.5 Model name ICHD031J0A ICHD036J0A ICHD042J0A ICHD048J0A Power supply V/Ph/Hz 220-240/1/50 3109（529-3909） Power input 3060(670~3480) 4559(529~5009) 5809(1200~6100) Cooling Power input (Maximum) 4700 4609 5469 7000 3009（509-4009） Power input 2900(650~3570) 3909(509~4009) 4909(1000~5200) Heating Power input (Maximum) 4700 4520 4520...
- Page 54 Table 1.3: ICHD060 specifications Model name ICHD060J0A Power supply V/Ph/Hz 220-240/1/50 Power input 6600(1340~6600) Cooling Power input (Maximum) 7465 Power input 5800(1120~5800) Heating Power input (Maximum) 7465 Type Rotary DC Inverter Quantity Compressor Oil type ESTER OIL VG74 Start-up method DC Inverter Starting Type WZDK170-38G-1...
- Page 55 2. Dimension (Unit: mm) ICHD009J0A-DMG026 / ICHD012J0A-DMG035 / ICHD018J0A-DMG053 / ICHD024J0A-DMG071 Model 35/53 ICHD031J0A-DMG090 / ICHD036J0A-DMG105 / ICHD042J0A-DMG120 / ICHD048J0A-DMG140 / ICHD060J0A-DMG160 Model 105/120/140 1040...
- Page 56 3. Refrigerant circuit ICHD009J0A-DMG026 / ICHD012J0A-DMG035 E S C Compressor Silencer Four-way reversing valve Silencer Condenser Fan blade Motor Heating spool Refrigerant cooling module Throttling capillary Stop valve (liquid side) Evaporator Outdoor unit wind wheel Indoor unit motor Stop valve (gas side) Temperature control switch Indoor temperature sensor Temperature sensor in the middle of evaporator...
- Page 57 ICHD018J0A-DMG053 E S C Compressor Silencer Four-way reversing valve Silencer Condenser Fan blade Motor Heating spool Refrigerant cooling module Refrigeration spool Stop valve (liquid side) Evaporator Outdoor unit wind wheel Indoor unit motor Stop valve (gas side) Temperature control switch Indoor temperature sensor Temperature sensor in the middle of evaporator Condenser outlet temperature sensor...
- Page 58 ICHD024J0A-DMG071 E S C Compressor Silencer Four-way reversing valve Silencer Condenser Fan blade Motor Heating spool Refrigerant cooling module Refrigeration spool Stop valve (liquid side) Evaporator Outdoor unit wind wheel Indoor unit motor Stop valve (gas side) Temperature control switch Indoor temperature sensor Temperature sensor in the middle of evaporator Condenser outlet temperature sensor...
- Page 59 ICHD031J0A-DMG090 ICHD036J0A-DMG105 ICHD042J0A-DMG120 ICHD048J0A-DMG140 ICHD060J0A-DMG160 E S C Compressor Silencer Four-way reversing valve Silencer Condenser Fan blade Motor Heating spool Refrigerant cooling module Refrigeration spool Filter Stop valve (liquid side) Evaporator Outdoor unit wind wheel Indoor unit motor Stop valve (gas side) Gas liquid separator Low voltage switch Indoor temperature sensor...
- Page 60 4. Wiring Diagrams ICHD009J0A-DMG026 / ICHD012J0A-DMG035 ICHD018J0A-DMG053 / ICHD024J0A-DMG071 Outdoor wire diagram DC Fan CN414 Four Way Valve CN60 CN23 Debug Board Brown L-IN Outdoor main Controller Blue Blue Blue CN 27 N -IN C N2 8 Black Black Black CN 29 E arth CN17...
- Page 61 ICHD031J0A-DMG090...
- Page 62 ICHD036J0A-DMG105 / ICHD042J0A-DMG120 / ICHD048J0A-DMG140...
- Page 63 ICHD060J0A-DMG160...
- Page 64 5. Electric Characteristics Model Power Supply Compressor Volts Capacity Min.volts Max.volts TOCA ICHD009-DMG026 220-240 0.02 ICHD012-DMG035 50 220-240 0.02 ICHD018-DMG053 50 220-240 12.9 14.5 7.85 0.05 0.71 50 220-240 ICHD024-DMG071 17.5 8.85 0.08 ICHD031-DMG090 50 220-240 11.8 0.08 ICHD036-DMG105 50 220-240 28.5 14.5 0.17...
- Page 65 6. Sound Levels ICHD009, 012, 018, 024, 031, 036, 042, 048 Front (H+1)/2 m Notes: H is the height of ODU ICHD060 Front (H+1)/2 m 1.3m Notes: H:The height of ODU Unit Number Model Noise Level (dB(A)) ICHD009J0A-DMG026 ICHD012J0A-DMG035 ICHD018J0A-DMG053 ICHD024J0A-DMG071 ICHD031J0A-DMG090 ICHD036J0A-DMG105...
- Page 66 7. Accessories Accessory name of outdoor unit Qty. Purpose Seal ring For drainage of ODU Water outlet joint...
- Page 67 OMEGA IECS Round-Flow Ceiling Cassette Technical Manual info@omegavrf.com info@otecvrf.com www.omegavrf.com www.otecvrf.com IECSJ3A-TM1D0622...