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Summary of Contents for ComfortStar BAR6 Series
- Page 1 R454b 60Hz 14.3 SEER2 Series Technical Manual R454b 60Hz Universal Outdoor BAR6 & BAH6 Series Technical Manual...
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Page 2: Table Of Contents
R454b 60Hz 14.3 SEER2 Series Technical Manual Content Part 1. General Information ..................1 1. Model Names of Indoor/Outdoor Units ......... 1 2. External Appearance ..............2 3. Features ..................3 Part 2. Indoor Unit ...................... 5 1.Specification ........Error! Bookmark not defined. 2.Dimension .................. -
Page 3: Part 1. General Information
R454b 60Hz 14.3 SEER2 Series Technical Manual Part 1. General Information 1. Model Names of Indoor/Outdoor Units ......... 1 2. External Appearance ..............2 3. Features ..................3 — 1 —... -
Page 4: Model Names Of Indoor/Outdoor Units
R454b 60Hz 14.3 SEER2 Series Technical Manual 1. Model Names of Indoor/Outdoor Units 1.1 Indoor Units Model name Dimension(W×H×D) (inch) Power supply LUC6-18-15 208/230V-1Ph-60Hz 19-5/8×45-3/4×22 LUC6-24-15 19-5/8×45-3/4×22 208/230V-1Ph-60Hz LUC6-30-15 208/230V-1Ph-60Hz 19-5/8×45-3/4×22 LUC6-36-15 19-5/8×45-3/4×22 208/230V-1Ph-60Hz LUC6-42-15 208/230V-1Ph-60Hz 22×53-1/8×24-1/2 LUC6-48-15 22×53-1/8×24-1/2 208/230V-1Ph-60Hz LUC6-60-15 208/230V-1Ph-60Hz 22×53-1/8×24-1/2... -
Page 5: External Appearance
R454b 60Hz 14.3 SEER2 Series Technical Manual 2. External Appearance 14.3 SEER2 TDU 2.5/3 Ton capacity 1.5/2 Ton 3.5/4/5 Ton 14.3 SEER2 AHU 3.5/4/5 Ton capacity 1.5/2/2.5/3 Ton — 2 —... -
Page 6: Features
R454b 60Hz 14.3 SEER2 Series Technical Manual 3. Features 3.1 Wide operation range. Heating:5-80℉. Cooling:54-120℉. High vertical / Long line heat pump mode14~80℉ 3.2 Well-known brand LG scroll compressor, reliable quality. 3.3 Condenser coils constructed with copper tubing and enhanced golden fins. 3.4 Use PISTON as expansion device 3.5 DC fan motors, provide selections of air flow to meet desired applications. - Page 7 R454b 60Hz 14.3 SEER2 Series Technical Manual — 4 —...
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Page 8: Part 2. Indoor Unit
R454b 60Hz 14.3 SEER2 Series Technical Manual Part 2. Indoor Unit 1.Dimension ..................6 2.Service Space ................7 3.Four-way installation ..............8 4.Air Filter (Not Factory Installed) ..Error! Bookmark not defined. 5.Electric heater ........ Error! Bookmark not defined. 6.Airflow performance ....... -
Page 9: Dimension
R454b 60Hz 14.3 SEER2 Series Technical Manual 1.Dimension Fig.1 DIMENSIONS DIMENSIONAL DATA Dimensions UNIT HEIGHT UNIT WIDTH UNIT SUPPLY LIQUID LINE / "H"/in "W"/in LENGTH DUCT "A"/in VAPOR LINE IN SIZE "D"/in（mm） （mm） （mm） （mm） （mm） 45-3/4 [1162] 19-5/8 [500] 22 [560] 17-7/8 [454] 3/8 / 3/4 [9.5]/[19]... -
Page 10: Service Space
R454b 60Hz 14.3 SEER2 Series Technical Manual 2.Service Space The distance between the air outlet or return air and the wall must be at least 40 inches, and the front of the indoor unit must be at least 25 inches away from the wall. —... -
Page 11: Four-Way Installation
R454b 60Hz 14.3 SEER2 Series Technical Manual 3.Four-way installation Horizontal right installation is the default factory configuration for all models. By removing the indoor coil assembly and reinstalling the coil, the vertical up flow position can be converted into a horizontal left position. Rotate the device by 90° to the horizontal left position, with the coil segment on the right and the blower segment on the left. - Page 12 R454b 60Hz 14.3 SEER2 Series Technical Manual Figure 4.3 Figure — 9 —...
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Page 13: Air Filter (Not Factory Installed)
R454b 60Hz 14.3 SEER2 Series Technical Manual 4.Air Filter (Not Factory Installed) The filter is not included in the device and must be provided on site. The size of external filters or other filtering devices must me et the maximum flow rate of 300ft/min or meet the recommended value of filter type. -
Page 14: Electric Heater
R454b 60Hz 14.3 SEER2 Series Technical Manual 5.Electric heater electric MIN. Circuit MAX. Fuse or Breaker Fan speed Heat kit heat Ampacity Ampacity model model (kW) 208 VAC 230 VAC CHE3-05B ● ● ● ● ● CHE3-08B × × ● ● ● CHE3-05B ●... -
Page 15: Airflow Performance
R454b 60Hz 14.3 SEER2 Series Technical Manual 6.Airflow performance The air flow data is based on the cooling performance of coil and without filter. Performance table, select the appropriate product. External static pressure ESP should be kept within the minimum and maximum limits shown in the following table to ensure the normal operation of cooling, heating, and electric heating. - Page 16 R454b 60Hz 14.3 SEER2 Series Technical Manual The highlighted area indicates the airflow within the required range of 300-450cfm/ton. — 13...
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Page 17: Wiring Diagrams
R454b 60Hz 14.3 SEER2 Series Technical Manual 7.Wiring Diagrams 8.Electric Characteristics Indoor Units Model Voltage Min. Max. 208-230V 187V 253V 208-230V 187V 253V 208-230V 187V 253V 208-230V 187V 253V 208-230V 187V 253V 10.0 208-230V 187V 253V 10.0 208-230V 187V 253V 10.0 —... -
Page 18: The Specification Of Wiring
R454b 60Hz 14.3 SEER2 Series Technical Manual 9.The Specification of Wiring Note: The cross-section areas of wires or lines should not be less than the corresponding ones listed in the table below; Besides, if the power wires is quite long from the unit, please choose the windings with larger cross-section guarantee the normal power supply. -
Page 19: Field Wiring
R454b 60Hz 14.3 SEER2 Series Technical Manual 10.Field Wiring 1. To avoid the electrical shock, please connect the air conditioner with the ground lug. 2. The main power plug in the air conditioner has been joined with the ground wiring, please don't change it freely. - Page 20 R454b 60Hz 14.3 SEER2 Series Technical Manual Thermostat wiring — 17...
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Page 23: Exploded View
R454b 60Hz 14.3 SEER2 Series Technical Manual 11.Exploded View Part Name Quantity Part Name Quantity Rear Enclosure Assembly Evaporator baffle Control box cover assembly DC Motor Duct assembly Indoor electric control box assembly 11.1 Indoor main control board Right Volute Wind Wheel 11.2 Ambient temperature sensor Support bar 11.3 Coil temperature sensor... -
Page 24: Part 3 Outdoor Unit
R454b 60Hz 14.3 SEER2 Series Technical Manual Part 3 Outdoor Unit 1.Dimensions ........Error! Bookmark not defined. 2.Service Space ........ Error! Bookmark not defined. 3.Wiring Diagrams......Error! Bookmark not defined. 4.Electric Characteristics ....Error! Bookmark not defined. 5.Operation Limits ......Error! Bookmark not defined. 6.Sound Levels ......... -
Page 25: Dimensions
R454b 60Hz 14.3 SEER2 Series Technical Manual 1.Dimensions model H×W×L (inches) 18K/24K 25 × 21-4/5 × 21-4/5 30K/36K 25 × 29-1/7 × 29-1/7 42K/48K/60K 32-7/8 × 29-1/7 × 29-1/7 — 22... -
Page 26: Service Space
R454b 60Hz 14.3 SEER2 Series Technical Manual 2.Service Space — 23... -
Page 27: Wiring Diagrams
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 3.Wiring Diagrams. Heat pump unit Cooling only unit — 24... -
Page 28: Electric Characteristics
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 4.Electric Characteristics Outdoor Unit Model Voltage Min. Max. 208~230V 187V 253V 208~230V 187V 253V 208~230V 187V 253V 208~230V 187V 253V 208~230V 187V 253V 208~230V 187V 253V 208~230V 187V 253V 5.Operation Limits Operation mode Outdoor temperature(℉) Room temperature(℉) -
Page 29: Exploded View
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 7.Exploded View Quanti Quanti Part Name Part Name Cover net electric control components DC Motor Mount 14.1 Electronic control board Outdoor motor 13.2 High pressure switch Axial-flow fan 13.3 Low pressure switch Top cover assembly 13.4 Condenser temperature sensor... - Page 30 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual assembly (TH) Rear side-panel 13.8 Solenoid valve Support board 13.9 AC contactor Left side-panel 13.1 Compressor capacitor Four way valve assembly Top panel Suction pipe weld Bottom side panel assembly Gas-liquid separator Chassis assembly High pressure...
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Page 31: Troubleshooting
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 8.Troubleshooting 8.1 Error conde Indoor unit Number of green light Fault description flashes T1 sensor fault T2 sensor fault Refrigerant concentration sensor fault Refrigerant leakage Anti-freeze protection Mainboard chip fault Motor protection IDU and ODU unit communication fault (RS485 communication mode) Wire controller communication fault (RS485 communication... - Page 32 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 8.2 Indoor unit control board NUM Port definition NUM Port definition Refrigerant leakage sensor Transformer output（24v） 24V thermostat power supply R, C PQE indoor and outdoor communication DC motor communicate port Electric heater port (to 24V thermostat) Electric heater port (connected to electric 24V terminal connected to 24V thermostat...
- Page 33 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 8.3 Outdoor unit control board NUM Port definition NUM Port definition DC motor communicate port 24V communication (Y/B) Digital display tube Return air temperature sensor Power supply Condenser temperature sensor Crankshaft heating belt ambient temperature sensor Four-way valve Exhaust temperature sensor...
- Page 34 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 8.4 Troubleshooting guide 8.4.1 T1/T2/ sensor fault, R454b sensor fault (Indoor unit sensor failure) 8.4.2 T3/T4/T5 sensor fault (Outdoor unit sensor failure) Reason: Sensor reading error Check whether the connection between the Re-insert firmly sensor and the main control board is loose.
- Page 35 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 8.4.5 Anti-freeze protection Reason: Indoor unit: The T2 sensor detects that the evaporator temperature is too low(T2＜ 0℃) Outdoor unit: The TH sensor detects that the gas return temperature is too low(T2＜ 0℃) Reconnect firmly and Check whether the temperature sensor...
- Page 36 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 8.4.6 Indoor fan protection Reason: The DC fan motor of the indoor unit has issue Replace the control board of the indoor unit. If not resolved, replace the motor. —...
- Page 37 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 8.4.7 High /Low pressure protection Cause: The high and low-pressure switch is continuously in the disconnected state Check whether the pressure switch Re-insert firmly wiring is firm and confirm that the wiring is normal.
- Page 38 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual The high-pressure switch port can be short circuited by using a screw clamped between two pins. 8.4.8 DC fan malfunction Cause：Abnormal detection of fan motor. — 35...
- Page 39 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual Check if the power supply is normal, with a phase voltage of 208-230V, and confirm that the power supply is functioning properly. After the power is turned off, use your hand to shake the wind wheel to see if there is any obvious resistance to the rotation of the wind wheel.
- Page 40 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 8.4.9 Outdoor coil temperature over-high protection (cooling mode) T3＞60℃ Cause: The condenser temperature sensor detected that the temperature was too high Reconnect firmly and Check whether the temperature sensor confirm that is firmly connected and whether the temperature sensor is resistance value of the sensor is normal.
- Page 41 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual measure the exhaust temperature). If the temperature of the main control board is unreasonable, replace the main control board. If the above steps are normal, check whether the refrigerant system is normal, such as return air blockage, poor evaporation, compressor wear, etc.
- Page 42 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 8.4.10 Exhaust temperature too high protection ＞120℃ Cause: The exhaust temperature sensor reads a temperature that is too high Check whether temperature Reconnect firmly and confirm sensor firmly connected that the temperature sensor whether the resistance value of the is normal.
- Page 43 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual (normally 0.7-0.9MPa). If the pressure is too low, add refrigerant. Measure the resistance of the temperature sensor and check whether it drifts by comparing it with the resistance table. If it drifts, replace the sensor. Please see the appendix for R-T table ...
- Page 44 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 8.4.11 Over temperature protection Cause: Outdoor sensor T4 detects that the ambient temperature exceeds the range Check whether temperature Reconnect firmly and confirm sensor firmly connected that the temperature sensor whether the resistance value of the is normal.
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Page 45: Part 4 Function Introduction
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual Part 4 Function introduction 1.Electrical Components Description ..........43 2.Anti-Cold Air & Heating Fan Delay Function ........43 3.Indoor Coil Anti-Freezing Function ..........44 4.Outdoor gas return temperature Anti-Freezing Function ....44 5.R454B Leakage Detection Function ..........45 6.Defrost Description ..............45... -
Page 46: Electrical Components Description
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 1.Electrical Components Description Temperature Sensor T1: IDU Ambient Temperature —capacity demand control (R485 mode) — Defrost control (heating mode) T2: Indoor Coil Temperature — Anti-Cold Air Function (heating mode) — Anti-Freezing Function T3: Outdoor Coil Temperature —... -
Page 47: Indoor Coil Anti-Freezing Function
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual Heating Fan Delay Function When the dip switch SW1-2 is set to “ON” and the indoor unit is in heating mode, the fan will operates with 90 seconds delay each time it starts. Fan speed determined by the Y1/Y2 signal from thermostat. -
Page 48: R454B Leakage Detection Function
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 5.R454B Leakage Detection Function The function utilizes a R454B refrigerant sensor to detect the R454B concentration. Terminal F/L2 is reserved for connecting buzzer if needed. When R454B leakage occur in the indoor coil and the concentration is above 10%LEF, the unit will perform as the following: A. -
Page 49: Part 5 Installation
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual Part 5 Installation ....Error! Bookmark not defined. 1.Precaution on Installation .... Error! Bookmark not defined. 2. Oil return bend installation 3.Vacuum Dry and Leakage Checking ..........50 4.Additional Refrigerant Charge ............52 5.Insulation Work ................54 6.Test Operation... -
Page 50: Precaution On Installation
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 1.Precaution on Installation 1.1. Measure pipe length Measure the necessary length of the connecting pipe and make it by the following way. Connect the indoor unit at first, then the outdoor unit. Bend the tubing in proper way. - Page 51 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual (357～367kgf.cm) 45～47N.m Φ15.9 18.6 19.1 (459～480 kgf.cm) 65～67N.m Φ19.1 22.9 23.3 (663～684kgf.cm) The stop value of the outdoor unit should be closed absolutely (as original state). Every time you connect it, first loosen the nuts at the part of stop value, then connect the flare pipe immediately (in 5 minutes).
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Page 52: Oil Return Bend Installation
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 2. Oil return bend installation Note that the length of the connecting line from the outdoor unit to the indoor unit cannot exceed 100 feet. ● If all long lines are in a horizontal state, no additional measures are required; ●... -
Page 53: Vacuum Dry And Leakage Checking
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 3.Vacuum Dry and Leakage Checking 3.1 Vacuum Dry: use vacuum pump to change the moisture (liquid) into steam (gas) in the pipe and discharge it out of the pipe to make the pipe dry. Under one atmospheric pressure, the boiling point of water(steam temperature) is 100℃. - Page 54 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual ② Special vacuum dry procedure a. Vacuum dry for the first time 2h pumping b. Fill nitrogen to 0.5Kgf/cm2 Because nitrogen is for drying gas, it has vacuum drying effect during vacuum destroy. But if the moisture is too much, this method can’t dry thoroughly.
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Page 55: Additional Refrigerant Charge
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 4.Additional Refrigerant Charge Caution ● Refrigerant cannot be charged until field wiring has been completed. ● Refrigerant may only be charged after performing the leak test and the vacuum pumping. ● When charging a system, care shall be taken that its maximum permissible charge is never exceeded, in view of the danger of liquid hammer. - Page 56 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual Remove service tools and short press "Check" (K4) " button to quit "forced cooling" mode. Symbol "dC" should disappear when "forced cooling" mode quitted. Table 4.1 — 53...
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Page 57: Insulation Work
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 5.Insulation Work 5.1 Insulation material and thickness 5.1.1. Insulation material Insulation material should adopt the material which is able to endure the pipe’s temperature: no less than 70℃ in the high-pressure side, no less than 120℃ in the low-pressure side(For the cooling type machine, no requirements at the low-pressure side.) Example: Heat pump type----Heat-resistant Polyethylene foam (withstand above 120℃) Cooling only type----Polyethylene foam (withstand above 100℃) - Page 58 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual For construction convenience, before laying pipes, use insulation material to insulate the pipes to be deal with, at the same time, at two ends of the pipe, remain some length not to be insulated, in order to be welded and check the leakage after laying the pipes.
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Page 59: Test Operation
R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 6.Test Operation (1) The test operation must be carried out after the entire installation has been completed. (2) Please confirm the following points before the test operation. The indoor unit and outdoor unit are installed properly. Tubing and wiring are correctly completed. - Page 60 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual Appendix：R-T table 5K: Applicable T1/T2/T3/T4 temperature sensor T (ºC) Rmin (KΩ) Rnom (KΩ) Rmax (KΩ) T (ºC) Rmin (KΩ) Rnom (KΩ) Rmax (KΩ) 51.159 52.84 54.521 4.771 4.821 4.871 48.659 50.232 51.805 4.599 4.649...
- Page 61 R454b 60Hz 20 SEER Universal Outdoor Series Technical Manual 50K：Applicable exhaust temperature sensor（T5/TP） T (ºC) Rmin (KΩ) Rnom (KΩ) Rmax (KΩ) T (ºC) Rmin (KΩ) Rnom (KΩ) Rmax (KΩ) 157.7 161.2 164.7 14.16 14.48 14.81 150.2 153.4 156.7 13.65 13.96 14.28 142.9 145.9...
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