DESIGN & TECHNICAL MANUAL

AIR CONDITIONER Wall Mounted type DESIGN & TECHNICAL MANUAL INDOOR ASU18RLF ASU24RLF OUTDOOR AOU18RLXFW AOU24RLXFW

1. INDOOR UNIT : ASU18RLF ASU24RLF DTR_AS51E_1 21.12.22

1. INDOOR UNIT CONTENTS 1. FEATURE... 1-1 2. WIRELESS REMOTE CONTROLLER... 1-4. SPECIFICATIONS... 1-6 4. DIMENSIONS... 1-7 5. WIRING DIAGRAMS... 1-9 6. CAPACITY TABLE... 1-1 6-1. COOLING CAPACITY... 1-1 6-2. HEATING CAPACITY...1-11 7. FAN PERFORMANCE... 1-12 7-1. AIR VELOCITY DISTRIBUTION... 1-12 7-2. AIR FLOW... 1-14 8. OPERATION NOISE... 1-16 8-1. NOISE LEVEL CURVE... 1-16 8-2. SOUND LEVEL CHECK POINT... 1-17 9. ELECTRIC CHARACTERISTICS... 1-18 1. SAFETY DEVICES... 1-19 11. EXTERNAL INPUT & OUTPUT... 1-2 11-1. EXTERNAL INPUT... 1-2 11-2. EXTERNAL OUTPUT... 1-22 12. FUNCTION SETTING... 1-2 12-1. INDOOR UNIT (Setting by remote controller)... 1-2 1. OPTIONAL PARTS... 1-27

- (1-1) - 111FEATURE MODEL ASU18RLF ASU24RLF FEATURES zhigh energy performance MODEL ASU18RLF ASU24RLF Seasonal Energy Efficiency Ratio (SEER) 19.2 18. Heating Seasonal Performance Factor (HSPF) BTU/hW 1. 1. Energy Efficient Ratio (EER) 1. 12.5 MEASUREMENT CONDITIONS ANSI/ASHRAE STANDARD 7-1988 zall DC High efficiency layout DC fan motor Large air flow and quiet operation by new air flow path a b DC fan motor DC twin rotary compressor More compact compared with conventional model a b Front view zsuper quiet Air flow mode can be set in 4 steps and more detailed air flow setting is possible. zeasy maintenance Easy maintenance and always clean. Troublesome maintenance has been made easy. Since the front panel is easy to remove, maintenance is also easy. zmin. HEAT Operation The room temperature can be set to go no lower than 5 F, thus ensuring that the room does not get too cold when not occupied Caution) When the room temperature is higher than 5 F, MIN. HEAT operation does not start. Operation starts and maintains the room temperature at 5 F when the temperature drops below 5 F. 7 F MIN. HEAT Button ON MIN. HEAT Button ON 5 F Indoor unit operation START

- (1-2) - zpower diffuser Adoption of large power diffuser Strong vertical air flow provides powerful floor level heating. (ft) 7 16 1 2 4 (ft) 46 o Power diffuser (full open) Outside air conditions:5.6 o F 6% Operation contents: Heating, Set temperature (Max set temp) 92 9 88 86 86 o F, Air flow Hi, Vertical flap : Downward o 84 ( F) Healthy horizontal air flow does not blow cool air directly at the occupants in the room. (ft) 7 Power diffuser 1 2 4 (ft) Outside air conditions: 95 o F 4% Operation contents: Cooling, Set temperature (Min set temp) 59 61 6 o 65 ( F) 65 o F, Air flow Hi, Vertical flap : Upward Horizontal flap : Center zlow ambient outdoor temperature design (24Model) Low ambient outdoor temperature design Cooling to 115 F Heating to 75 F zcorresponds to maximum 164feet (5m) long piping

- (1 - ) - zair conditioner filter features Organic coating fin used heat exchanger Ion Deodorization Filter Apple-catechin Filter Pre Filter Antibacterial deodorizing pre-filter with special ceramic powder Long-life Ion Deodorization Filter Applecatechin Filter zeconomy operation Example : Cooling operation Temp. Economy operation Shift setting temp Economy operation is energy saving, as the set temperature of indoor unit is shifted by 2 F and the maximum electric value of the outdoor unit is suppressed. Set temperature Nomal operation Control maxmum current Time zblue fin heat exchanger Corrosion-resistance of the heat exchanger even in coastal areas has been improved by blue fin treatment of the outdoor unit heat exchanger. Blue fin heat exchanger Cobalt Blue protection Standard chromate protection Aluminium base material Hydrophilic coating

- (1-4) - 222WIRELESS REMOTE CONTROLLER FEATURES Four kinds of timer setup (ON / OFF / PROGRAM / SLEEP) are possible. Can be used jointly with wired remote controllers. Easy to change custom code (4 patterns). zbuilt-in timers Select from four different timer programs (On / Off / Program / Sleep). zprogram timer The program timer operates the ON and OFF timer once within a 24 hour period. zsleep timer The sleep timer function automatically corrects the temperature thermostat setting according to the time setting to prevent excessive cooling and heating while sleeping. Cooling operation / dry operation When the sleep timer is set, the set temperature automatically rises 2 F (1 C) every hour. The set temperature can rise up to a maximum of 4 F (2 C). Timer setting Heating operation When the sleep timer is set, the set temperature automatically drops 2 F (1 C) every minutes. The set temperature can drop to a maximum of 8 F (4 C). 2 F (1 C) 4 F (2 C) 6 F ( C) 8 F (4 C) 6min. min. 2 F (1 C) 4 F (2 C) 6min. 9min. Timer setting zswitching remote controller signal code After code change Mixed-up A B C D I.U. I.U. I.U. I.U. I.U. I.U. I.U. I.U. A B C D Code selector switch eliminates unit being wrongly switched. (Up to 4 codes can be set.) *I.U.=Indoor unit

- (1-5) - FUNCTIONS 1 2 4 9 Display panel 16 5 1 11 1 17 18 19 6 7 8 14 12 15 2 21 22 2 1 MODE button Selects the operating mode (AUTO, COOL, DRY, FAN, HEAT). /Start / end R.C. custom code change. (Max 4 types) 2 MIN.HEAT button Set temp. button ( / ) Set remote controller custom code buttons Sets the indoor temp./ Sets R.C. custom code. 4 ECONOMY button 5 SLEEP button Pressed to select sleep timer. 6 FAN button Selects the fan speed (AUTO, HIGH, MED, LOW, QUIET). 7 START/STOP button Pressed to start and stop operation. 8 SET button (Vertical) Air flow direction vertical set button. 9 SET button (Horizontal) Air flow direction horizontal set button. 1 SWING button Air flow direction swing button. 11 TIMER MODE button Pressed to select the timer mode. (OFF TIMER, ON TIMER, PROGRAM TIMER, TIMER RESET) 12 TIMER SET ( + / - ) button Sets the current time and on-off time. 1 CLOCK ADJUST button Sets the current time. 14 RESET button Used when replacing batteries. 15 TEST RUN button Used when testing the air conditioner after installation. 16 Signal transmitter 17 Temperature set display 18 Operating mode display 19 Sleep display 2 Transmit indicator 21 Fan speed display 22 Swing display 2 Timer mode display 24 Clock display 24 Note: Functions will be different due to type of indoor unit. For details, please see operation manual.

- (1-6) - SPECIFICATIONS Type WALL MOUNTED INVERTER HEAT PUMP Model name ASU18RLF ASU24RLF Power source 28/2V ~ 6Hz Available voltage range 187-25V ~ 6Hz Capacity Cooling Rated kw 5.28 6.44 BTU/h 18, 22, Min-Max kw 2.5-6.74 2.9-8. BTU/h 7, - 2, 9,9-27, Heating Rated kw 6. 8.1 BTU/h 21,6 27,6 Min-Max kw 2.5-8.5 2.2-1.61 BTU/h 7, - 29, 7,5-6,2 Input power Rated 1.5 1.76 Cooling Max.1.42 kw Rated 1.8 2.8 Heating Max.2.5 Current Rated 6.2 7.9 Cooling Max 1.5 15. A Rated 8. 1.5 Heating Max 14.5 15.5 EER Cooling kw/kw.9.66 BTU/hW 1. 12.5 COP Heating kw/kw.5.4 BTU/hW 12. 11.6 SEER Cooling BTU/hW 19.2 18. HSPF Heating BTU/hW 1. 1. POWER FACTOR Cooling 95 97 % Heating 98 99 Moisture removal pints/h (l/h) 5.9 (2.8) 6. (.) High 541 (92) 659 (1,12) Cooling Med 45 (74) 5 (9) Low 65 (62) 45 (74) Fan Sound pressure level Heat exchanger type Enclosure Dimensions ( H W D ) Weight Connection pipe Operation range Remote controller type Drain pipe Airflow rate Heating Quiet High CFM (m /h) 6 (52) 541 (92) 65 (62) 677 (1,15) Med 45 (74) 5 (9) Low 65 (62) 45 (74) Quiet 18 (54) 65 (62) Type Q'ty Cross flow fan 1 Motor output W 64 64 High 4 49 Med 7 42 Cooling Low 7 Quiet 28 db(a) High 44 49 Med 7 42 Heating Low 7 Quiet 28 Dimensions (H W D) in. (mm) Main:15-7/8 x -/4 x 1-1/16 (78 82 26.6) Sub: -5/16 x -/4 x 17/2 (84 82 1.) Fin pitch FPI Main:21, Sub:18 Rows x Stages Main:2 18, Sub:1 4 Pipe type Copper Fin type Aluminium Material Polystyrene Color WHITE Approximate color of MUNSELL N9.25/ Net mm 2 998 228 inch 12-5/8 9-1/4 9 Gross mm 19 19 429 inch 12-/5 42-15/16 16-7/8 Net 1 (14) lb.(kg) Gross 4 (18) Size Liquid Ø /8 (Ø 9.52) in. (mm) Gas Ø 5 /8 (Ø 15.88) Method Flare Cooling F ( C) 64 to 9 (18 to 2) %RH 8 or less Heating F ( C) 88 () or less Wireless Material PVC Size mm (Reference in.) Outer diameter: 28 (1-/2) Inner diameter: 16 (5/8). Note : Specifications are based on the following conditions. Cooling : Indoor temperature of 8 F (26.67 C)DB / 67 F (19.44 C)WB, and outdoor temperature of 95 F (5 C)DB / 75 F (2.9 C)WB. Heating : Indoor temperature of 7 F (21.11 C)DB / 59 F (15 C)WB, and outdoor temperature of 47 F (8. C)DB / 4 F (6.11 C)WB. Pipe length : 24.6ft(7.5m) [Outdoor unit - Indoor unit], Height difference : ft. (m) [Outdoor unit - Indoor unit]

- (1-7) - 444DIMENSIONS MODEL: ASU18RLF, ASU24RLF Unit : in (mm) 9-9/2 (998) 12-19/2 (2) 1 (25) 2-15/2 (52) 2-7/2 (59) 28-/8 (721) 8-1/2 (228) ø1-1/4 (2) ø5/8 (16) ø15/2 (12) 2-15/2 (52) 1-15/2 (7) 25/2 (2) Unit center 17-9/2 (49) 15-/4 (4) 5/8 (16) 1-1/2 x 7/16 (26 x 11) hole 15-1/4 (87) 9-9/16 (24) 4-7/16 (11) 2/2 x 7/16 (18 x 11) hole 2-15/16 (75) 6-11/16 (17) 5-1/8 (1) 2-15/16 (75) 6/2 x 2/2 (5 x 18): 14holes 12-19/2 (2): Unit size 1-19/2 (269) ø-5/2 (8) hole Piping inlet 6/2 x 1-1/2 (5 x 5): holes 4-1/16 (122) 6-25/2 (172) 17-1/4 (48) 15-5/8 (97) ø6/2 (5): 65holes for tapping screw 5-1/4 (1) 4-1/2 (126) 9-/8 (1): Unit size 2/2 x 7/16 (18 x 11) hole 1-1/2 x 7/16 (26 x 11) hole 1/16 x 6/2 (21 x 5): 14holes 15/2 (12) 1-6/2 () ø-5/2 (8) hole Piping inlet 1/2 x 6/2 (1 x 5): 4holes 1-2/2 (44) 1/2 (1) 5-7/8 (149) 7-/4 (197) 1-2/2 (272) 1-6/2 () ASU18RLF ASU24RLF Refrigerant pipe flare Liquid *ø 1/4 in. (6.5 mm) *ø 1/4 in. (6.5 mm) connection Gas *ø 1/2 in. (12.7 mm) ø 5/8 in. (15.88 mm) Drain hose connection Drain hose I.D. 15/2 in. (12 mm), O.D. 5/8 in. (16 mm) Drain hose : L=26-/8 in. (67mm) * When connecting to a connection pipe, an adapter provided as accessory along with the outdoor unit is required. Connection pipe Liquid Gas ASU18RLF ASU24RLF ø /8 in. (ø 9.52 mm) ø 5/8 in. (ø 15.88 mm)

- (1-8) - INSTALLATION PLACE Unit : in (mm) 2-15/2 (6) or more -5/2 (8) or more Outline of unit 2-1/16 (52) or more -5/2 (8) or more 2-/2 (5) or more 4-2/2 (12) or more 59-1/16 (15) or more 7-7/8 (18) or more

- (1-9) - 555WIRING DIAGRAMS MODEL: ASU18RLF, ASU24RLF

- (1-1) - 666CAPACITY TABLE 66666COOLING CAPACITY MODEL: ASU18RLF AFR 541 Outdoor temperature Indoor temperature FDB 64 7 75 8 85 9 FWB 54 6 6 67 71 7 FDB TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI 59 17.6 11.16.78 19.4 11.2.79 21.1 12.24.8 21.97 1.22.81 2.29 1.17.81 24.61 14..82 67 16.66 1.86.92 18.56 1.9.9 2.46 11.92.95 21.9 12.87.95 22.6 12.82.96 2.6 1.66.97 77 15.92 1.55 1.6 17.7 1.61 1.7 19.54 11.57 1.9 2.15 12.5 1.9 21.5 12.45 1.11 22.56 1.26 1.12 87 15.11 1.22 1.19 16.8 1.28 1.21 18.55 11.21 1.2 19.12 12.1 1.2 2.27 12.5 1.25 21.42 12.84 1.26 95 14.2 9.86 1. 15.85 9.92 1.2 17.47 1.82 1.4 18. 11.68 1.5 19.1 11.64 1.6 2.18 12.9 1.8 14 1.57 9.6 1.45 15.11 9.65 1.47 16.66 1.5 1.49 17.17 11.7 1.5 18.2 11.2 1.51 19.2 12.6 1.5 115 12.9 9.1 1.62 1.8 9.19 1.65 15.21 1.2 1.67 15.68 1.82 1.68 16.62 1.78 1.7 17.56 11.48 1.72 AFR : Air flow rate (CFM) TC : Total capacity (kbtu) SHC : Sensible Heat capacity (kbtu) PI : Power Input (kw) AFR 15. Outdoor temperature Indoor temperature CDB 17.8 21.1 2.9 26.7 29.4 2.2 CWB 12.2 15.6 17.7 19.4 21.7 22.8 CDB TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI 15. 5.9.27.78 5.67.29.79 6.25.59.8 6.44.88.81 6.8.86.81 7.21 4.11.82 19.4 4.88.18.92 5.44.2.9 6..49.95 6.18.77.95 6.55.76.96 6.92 4..97 25. 4.66.9 1.6 5.2.11 1.7 5.7.9 1.9 5.9.66 1.9 6.26.65 1.11 6.61.89 1.12.6 4.4 2.99 1.19 4.9.1 1.21 5.44.28 1.2 5.61.55 1.2 5.94.5 1.25 6.28.76 1.26 5. 4.17 2.89 1. 4.65 2.91 1.2 5.12.17 1.4 5.28.42 1.5 5.6.41 1.6 5.91.6 1.8 4..98 2.81 1.45 4.4 2.8 1.47 4.88.9 1.49 5.. 1.5 5.4.2 1.51 5.64.54 1.5 46.1.6 2.68 1.62 4.4 2.69 1.65 4.46 2.94 1.67 4.59.17 1.68 4.87.16 1.7 5.15.7 1.72 AFR : Air flow rate (m /min) TC : Total capacity (kw) SHC : Sensible Heat capacity (kw) PI : Power Input (kw) MODEL: ASU24RLF AFR 659 Outdoor temperature Indoor temperature FDB 64 7 75 8 85 9 FWB 54 6 6 67 71 7 FDB TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI 59 18.62 11.2.82 2.74 11.9.8 22.86 12.42.84 2.57 1.41.85 24.99 1.6.85 26.4 14.2.86 67 17.91 11.6.95 19.95 11.1.97 21.99 12.14.98 22.67 1.11.99 24. 1.6 1. 25.9 1.91 1.1 77 19. 11.57 1.7 21.5 11.64 1.9 2.7 12.69 1.41 24.4 1.71 1.42 25.9 1.65 1.4 27.7 14.54 1.44 87 18.7 11.2 1.5 2.46 11. 1.55 22.56 12.2 1.58 2.25 1. 1.58 24.65 1.25 1.6 26.4 14.12 1.61 95 17.6 1.87 1.7 19.4 1.9 1.72 21.1 11.9 1.75 22. 12.88 1.76 2.29 12.8 1.78 24.61 1.66 1.8 14 16.2 1.48 1.86 18.7 1.54 1.89 19.92 11.5 1.92 2.54 12.42 1.9 21.77 12.7 1.95 2. 1.17 1.97 115 12.5 9.2 1.56 1.76 9.28 1.58 15.17 1.12 1.61 15.64 1.9 1.61 16.58 1.89 1.6 17.52 11.6 1.65 AFR : Air flow rate (CFM) TC : Total capacity (kbtu) SHC : Sensible Heat capacity (kbtu) PI : Power Input (kw) AFR 18.7 Outdoor temperature Indoor temperature CDB 17.8 21.1 2.9 26.7 29.4 2.2 CWB 12.2 15.6 17.7 19.4 21.7 22.8 CDB TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI 15. 5.46.2.82 6.8.4.8 6.7.64.84 6.91.9.85 7.2.91.85 7.74 4.17.86 19.4 5.25.24.95 5.85.26.97 6.44.56.98 6.64.84.99 7.4.8 1. 7.44 4.8 1.1 25. 5.66.9 1.7 6..41 1.9 6.95.72 1.41 7.16 4.2 1.42 7.59 4. 1.4 8.2 4.26 1.44.6 5.8.29 1.5 6..1 1.55 6.61.61 1.58 6.82.9 1.58 7.22.88 1.6 7.6 4.14 1.61 5. 5.9.19 1.7 5.67.2 1.72 6.25.5 1.75 6.44.77 1.76 6.8.76 1.78 7.21 4. 1.8 4. 4.76.7 1.86 5..9 1.89 5.84.7 1.92 6.2.64 1.9 6.8.62 1.95 6.74.86 1.97 46.1.62 2.7 1.56 4. 2.72 1.58 4.45 2.97 1.61 4.58.2 1.61 4.86.19 1.6 5.1.4 1.65 AFR : Air flow rate (m /min) TC : Total capacity (kw) SHC : Sensible Heat capacity (kw) PI : Power Input (kw)

- (1-11) - 66666HEATING CAPACITY MODEL: ASU18RLF AFR 541 Outdoor temperature Indoor temperature FDB 6 65 7 72 75 FDB FWB TC PI TC PI TC PI TC PI TC PI 5 18.8 2.5 18.4 2.55 17.9 2.6 17.5 2.65 17. 2.7 14 12 21. 2.67 2.8 2.7 2. 2.78 19.8 2.84 19. 2.89 2 19 24.7 2.86 24.1 2.92 2.5 2.98 22.9.4 22..1 2 28 27.5 2.87 26.8 2.9 26.2 2.99 25.5.5 24.9.11 41 7 29. 2.84 28.6 2.9 27.9 2.96 27.2.2 26.5.8 47 4.5 2.87 29.7 2.9 29. 2.99 28..5 27.6.11 5 47 1. 2.85. 2.91 29.5 2.97 28.8. 28..9 59 5 29.2 2.48 28.5 2.5 27.8 2.58 27.2 2.6 26.5 2.68 AFR : Air flow rate (CFM) TC : Total capacity (kbtu) PI : Power Input (kw) AFR 15. Outdoor temperature Indoor temperature CDB 15.6 18. 21.1 21.2 2.9 CDB CWB TC PI TC PI TC PI TC PI TC PI -15-16 5.52 2.5 5.9 2.55 5.26 2.6 5.1 2.65 5. 2.7-1 -11 6.24 2.67 6.9 2.7 5.95 2.78 5.8 2.84 5.65 2.89-5 -7 7.24 2.86 7.7 2.92 6.89 2.98 6.72.4 6.55.1-2 8.5 2.87 7.86 2.9 7.67 2.99 7.48.5 7.29.11 5 8.59 2.84 8.8 2.9 8.18 2.96 7.98.2 7.77.8 7 6 8.9 2.87 8.71 2.9 8.5 2.99 8.29.5 8.8.11 1 8 9.8 2.85 8.87 2.91 8.65 2.97 8.4. 8.22.9 15 1 8.57 2.48 8.7 2.5 8.16 2.58 7.96 2.6 7.75 2.68 AFR : Air flow rate (m /min) TC : Total capacity (kw) PI : Power Input (kw) MODEL: ASU24RLF AFR 677 Outdoor temperature Indoor temperature FDB 6 65 7 72 75 FDB FWB TC PI TC PI TC PI TC PI TC PI 5 25.. 24.7.7 24.1.44 2.5.51 22.9.58 14 12 27.5.2 26.9.9 26.2.46 25.6.5 24.9.6 2 19.8.27..4 29..41 28.6.48 27.8.55 2 28.8.27.. 2.2.4 1.4.47.6.54 41 7 6.9.29 6..6 5.1.4 4..49.4.56 47 4 8..25 7.1.2 6.2.8 5..45 4.4.52 5 47 8.7.24 7.8.1 6.9.7 5.9.44 5..51 59 5 6.9 2.85 6. 2.91 5.1 2.97 4.2..4.9 AFR : Air flow rate (CFM) TC : Total capacity (kbtu) PI : Power Input (kw) AFR 19.2 Outdoor temperature Indoor temperature CDB 15.6 18. 21.1 21.2 2.9 CDB CWB TC PI TC PI TC PI TC PI TC PI -15-16 7.4. 7.2.7 7.5.44 6.87.51 6.7.58-1 -11 8.7.2 7.88.9 7.69.46 7.5.5 7..6-5 -7 9.2.27 8.81.4 8.59.41 8.8.48 8.16.55-2 9.91.27 9.67. 9.44.4 9.2.47 8.97.54 5 1.81.29 1.55.6 1..4 1.4.49 9.78.56 7 6 11.1.25 1.87.2 1.6.8 1.4.45 1.7.52 1 8 11.4.24 11.7.1 1.8.7 1.5.44 1.26.51 15 1 1.8 2.85 1.55 2.91 1.29 2.97 1.. 9.78.9 AFR : Air flow rate (m /min) TC : Total capacity (kw) PI : Power Input (kw)

- (1-12) - 777FAN PERFORMANCE 77777AIR VELOCITY DISTRIBUTION MODEL: ASU18RLF (ft)(m) 7 2 Unit : ft/s (m/s) Note: Fan speed : High Operation mode : FAN Voltage : 2V 1 7(2) (1) 2(.5) 1 7 (ft)(m) 1 2 1 2 4 5 6 7 8 7 14 2 27 Unit : ft/s (m/s) TOP VIEW Vertical flap : Up Horizontal flap : Center (m) (ft) 7 2 7(2) 1 (ft)(m) 1 1 2 4 5 6 7 8 (1) 2(.5) 7 14 2 27 Unit : ft/s (m/s) SIDE VIEW Vertical flap : Up Horizontal flap : Center (m) (ft) 7 2 7(2) (1) 1 2(.5) 2(.5) 1 7(2) (1) 7 2 1 (ft)(m) 1 1 2 4 5 6 7 8 7 14 2 27 Unit : ft/s (m/s) TOP VIEW Vertical flap : Up Horizontal flap : Right & Left (m) (ft) 7 2 1 7(2) (1) 2(.5) 1 2 4 5 6 7 8 7 14 2 27 SIDE VIEW Vertical flap : Down Horizontal flap : Center (m) (ft)

- (1-1) - MODEL: ASU24RLF (ft)(m) 7 2 Unit : ft/s (m/s) Note: Fan speed : High Operation mode : FAN Voltage : 2V 1 7(2) (1) 2(.5) 1 7 (ft)(m) 1 2 1 2 4 5 6 7 8 7 14 2 27 Unit : ft/s (m/s) TOP VIEW Vertical flap : Up Horizontal flap : Center (m) (ft) 7 2 7(2) 1 (ft)(m) 1 1 2 4 5 6 7 8 (1) 2(.5) 7 14 2 27 Unit : ft/s (m/s) SIDE VIEW Vertical flap : Up Horizontal flap : Center (m) (ft) 7 2 (1) 1 7(2) 2(.5) 1 7(2) 2(.5) 7 1 2 (ft)(m) 1 1 2 4 5 6 7 8 (1) 7 14 2 27 Unit : ft/s (m/s) TOP VIEW Vertical flap : Up Horizontal flap : Right & Left (m) (ft) 7 2 1 7(2) (1) 2(.5) 1 2 4 5 6 7 8 7 14 2 27 SIDE VIEW Vertical flap : Down Horizontal flap : Center (m) (ft)

- (1-14) - 77777AIR FLOW MODEL: ASU18RLF zcooling Fan speed Number of rotations (r.p.m.) Air flow 92 m /h HIGH 126 256 l/s 541 CFM 74 m /h MED 12 26 l/s 45 CFM 62 m /h LOW 9 172 l/s 65 CFM 52 m /h QUIET 77 144 l/s 6 CFM zheating Fan speed Number of rotations (r.p.m.) Air flow 92 m /h HIGH 126 256 l/s 541 CFM 74 m /h MED 12 26 l/s 45 CFM 62 m /h LOW 9 172 l/s 65 CFM 54 m /h QUIET 79 15 l/s 18 CFM

- (1-15) - MODEL: ASU24RLF zcooling Fan speed Number of rotations (r.p.m.) Air flow 112 m /h HIGH 148 11 l/s 659 CFM 9 m /h MED 122 25 l/s 5 CFM 74 m /h LOW 12 26 l/s 45 CFM 62 m /h QUIET 9 172 l/s 65 CFM zheating Fan speed Number of rotations (r.p.m.) Air flow 115 m /h HIGH 15 19 l/s 677 CFM 9 m /h MED 122 25 l/s 5 CFM 74 m /h LOW 12 26 l/s 45 CFM 62 m /h QUIET 9 172 l/s 65 CFM

- (1-16) - 888OPERATION NOISE 88888NOISE LEVEL CURVE MODEL: ASU18RLF zcooling zheating 8 8 7 7 Octave band sound pressure level, db:(db=.2µbar) 6 5 4 2 High Quiet NC-65 NC-6 NC-55 NC-5 NC-45 NC-4 NC-5 NC- NC-25 NC-2 Octave band sound pressure level, db:(db=.2µbar) 6 5 4 2 High Quiet NC-65 NC-6 NC-55 NC-5 NC-45 NC-4 NC-5 NC- NC-25 NC-2 NC-15 NC-15 1 1 6 125 25 5 1, 2, 4, 8, Octave band center frequency,hz 6 125 25 5 1, 2, 4, 8, Octave band center frequency,hz MODEL: ASU24RLF zcooling zheating 8 8 7 7 Octave band sound pressure level, db:(db=.2µbar) 6 5 4 2 High Quiet NC-65 NC-6 NC-55 NC-5 NC-45 NC-4 NC-5 NC- NC-25 NC-2 Octave band sound pressure level, db:(db=.2µbar) 6 5 4 2 Quiet High NC-65 NC-6 NC-55 NC-5 NC-45 NC-4 NC-5 NC- NC-25 NC-2 NC-15 NC-15 1 1 6 125 25 5 1, 2, 4, 8, Octave band center frequency,hz 6 125 25 5 1, 2, 4, 8, Octave band center frequency,hz

- (1-17) - 88888SOUND LEVEL CHECK POINT 2ft. 7-5/8 in. (.8m) ft. -/8 in. (1m)

- (1-18) - 999ELECTRIC CHARACTERISTICS Model Name ASU18RLF ASU24RLF Power Supply Voltage V 28 / 2 ~ Frequency Hz 6 Max. Operating Current A. *1)Wiring Spec. Connection Cable AWG 14 Limited wiring length ft. (m) 167 (5) *1) Wiring Spec. Selected Sample (Selected based on Japan Electrotechnical Standard and Codes Committee E5)

- (1-19) - 1111 SAFETY DEVICES Protection form ASU18RLF Model ASU24RLF Circuit protection Current fuse (PCB).15A 25V Terminal protection Current fuse A 25V Fan motor protection Thermal protection program 212 +27-18 F (1 +15-1 C) OFF 2 +9-18 F (95 +5-1 C) ON

- (1-2) - 1111 EXTERNAL INPUT & OUTPUT Connector INPUT OUTPUT REMARKS CN14 Control input - See external CN16 - Operation status output input/output settings for details. 111111 EXTERNAL INPUT CONTROL INPUT (Operation/Stop or Forced stop) The air conditioner can be remotely operated by means of the following on-site work. "Operation/Stop" mode or "Forced stop" mode can be selected with function setting of indoor unit. Operation is started at the following contents by adding the contact input of a commercial ON/OFF switch to a connector on the external control PC board and turning it ON. Initial starting after power turned on Starting other than at the left Operation mode Auto changeover Mode at previous operation Set temperature 76 F (24 C) Temperature at previous operation Air flow mode AUTO Mode at previous operation Up-down air direction (swing) Standard air direction (swing OFF) Air direction at previous operation Left-right air direction (swing) Standard air direction (swing OFF) Air direction at previous operation zcircuit diagram example Indoor control PC board Connected unit Connector 1 Ex.) Switch *ft. (1m) Signal Field supply * Make the distance from the PC board to the connected unit within ft. (1m). Contact capacity : 24VDC or more, 1mA or more. Please use the non-polar relays and switches. zwhen function setting is "Operation/Stop" mode Input signal Indoor unit ON OFF Operation Stop

- (1-21) - When function setting is "Forced stop" mode Input signal On Off Command Forced stop Normal Indoor unit Operation Stop Remote controller On On On Remote control operation invalidity zparts (Optional) Parts name External connect kit Model name UTY-XWZX Wire (External input) : UTY-XWZX

- (1-22) - 111111 EXTERNAL OUTPUT OPERATION STATUS OUTPUT An air conditioner operation status signal can be output. zcircuit diagram example Indoor control PC board Connected unit Connector 1 2 24V DC V *ft. (1m) Ex.)Relay unit Ex.)Display Relay power supply Signal Field supply * Make the distance from the PC board to the connected unit within ft. (1m). Relay spec. : Max.24VDC, 1mA to less than 5mA. Indoor unit Output signal Operation Stop ON OFF zparts (Optional) Parts name External connect kit Model name UTY-XWZX Wire (External input) : UTY-XWZX

- (1-2) - 1111 FUNCTION SETTING 111111 INDOOR UNIT (Setting by remote controller) The function settings of the control of the indoor unit can be changed by this procedure according to the installation conditions. Incorrect settings can cause the indoor unit malfunction. After the power is turned on, perform the FUNCTION SETTING according to the installation conditions using the remote controller. The settings may be selected between the following two: Function Number or Setting Value. Settings will not be changed if invalid numbers or setting values are selected. FUNCTION SETTING METHOD (for Wireless remote controller) Entering the Function Setting Mode While pressing the FAN button and SET TEMP. ( ) simultaneously, press the RESET button to enter the function setting mode. STEP 1 Setting the Remote controller Signal Code Use the following steps to select the signal code of the remote controller. (Note that the air conditioner cannot receive a signal code if the air conditioner has not been set for the signal code.) The signal codes that are set through this process are applicable only to the signals in the FUNCTION SETTING. For details on how to set the signal codes through the normal process, refer to SELECTING THE REMOTE CONTROLLER SIGNAL CODE. 111 Press the SET TEMP. ( ) ( ) button to change the signal code between Match the code on the display to the air conditioner signal code. (initially set to ) (If the signal code does not need to be selected, press the MODE button and proceed to STEP 2.) 222 Press the TIMER MODE button and check that the indoor unit can receive signals at the displayed signal code. Press the MODE button to accept the signal code, and proceed to STEP 2. The air conditioner signal code is set to A prior to shipment. The remote controller resets to signal code A when the batteries in the remote controller are replaced. If you use a signal code other than signal code A, reset the signal code after replacing the batteries. If you do not know the air conditioner signal code setting, try each of the signal codes ( ) until you find the code which operates the air conditioner. STEP 2 Selecting the Function Number and Setting Value 111 Press the SET TEMP. ( ) ( ) buttons to select the function number. (Press the MODE button to switch between the left and right digits.) 222 Press the FAN button to proceed to setting the value. Press the FAN button again to return to the function number selection.) Press the SET TEMP. ( ) ( ) buttons to select the setting value. (Press the MODE button to switch between the left and right digits.) 444 Press the TIMER MODE button, and START/STOP button, in the order listed to confirm the settings. 555 Press the RESET button to cancel the function setting mode. 666 After completing the FUNCTION SETTING, be sure to turn off the power and turn it on again. Function number Setting value CAUTION After turning off the power, wait 1 seconds or more before turning on it again. The FUNCTION SETTING doesn t become effective if it doesn t do so.

- (1-24) - FUNCTION DETAILS Functions Wall mounted 1) Filter sign 2) Cooler room temperature correction ) Heater room temperature correction 4) Auto restart 5) Indoor room temperature sensor switching function 6) Remote controller signal code 7) External input control 1) Filter sign The indoor unit has a sign to inform the user that it is time to clean the filter. Select the time setting for the filter sign display interval in the table below according to the amount of dust or debris in the room. If you do not wish the filter sign to be displayed, select the setting value for "No indication". (... Factory setting) Setting description Function number Setting value Standard Long interval 1 11 Short interval 2 No indication The filter sign interval time is different according to Indoor unit type as follows. Setting description Standard Long interval Short interval Wall mounted 4 hours 1 hours 2 hours 2) Cooler room temperature correction Depending on the installed environment, the room temperature sensor may require a correction. The settings may be selected as shown in the table below. (... Factory setting) Setting description Function number Setting value Standard Slightly lower control 1 Lower control 2 Warmer control ) Heater room temperature correction Depending on the installed environment, the room temperature sensor may require a correction. The settings may be changed as shown in the table below. (... Factory setting) Setting description Function number Setting value Standard Lower control 1 1 Slightly warmer control 2 Warmer control

- (1-25) - 4) Auto restart Enable or disable automatic system restart after a power outage. (... Factory setting) Setting description Function number Setting value Yes 4 No 1 * Auto restart is an emergency function such as for power failure etc. Do not start and stop the indoor unit by this function in normal operation. Be sure to operate by the control unit, or external input device. 5) Indoor room temperature sensor switching function (Only for Wired remote controller) The following settings are needed when use the control by Wired remote controller temperature sensor. (... Factory setting) Setting description Function number Setting value No 42 Yes 1 * If setting value is : Room temperature is controlled by the indoor unit temperature sensor. * If setting value is 1 : Room temperature is controlled by either indoor unit temperature sensor or remote controller unit sensor. 6) Remote controller signal code Change the indoor unit Signal Code, depending on the remote controllers. (... Factory setting) Setting description Function number Setting value A B 1 44 C 2 D 7) External input control "Operation/Stop" mode or "Forced stop" mode can be selected. (... Factory setting) Setting description Function number Setting value Operation/Stop mode (Setting forbidden) 46 1 Forced stop mode 2

- (1-26) - REMOTE CONTROLLER SIGNAL CODE SETTING Use the following steps to select the signal code of the remote controller. (Note that the air conditioner cannot receive a signal code if the air conditioner has not been set for the signal code.) 111 Press the START/STOP button until only the clock is displayed on the remote controller display. 222 Press the MODE button for at least five seconds to display the current signal code (initially set to ). Press the SET TEMP. ( ) ( ) button to change the signal code between. Match the code on the display to the air conditioner signal code. 444 Press the MODE button again to return to the clock display. The signal code will be changed. If no buttons are pressed within seconds after the signal code is displayed, the system returns to the original clock display. In this case, start again from step 1. The air conditioner signal code is set to A prior to shipment. Contact your retailer to change the signal code. The remote controller resets to signal code A when the batteries in the remote controller are replaced. If you use a signal code other than signal code A, reset the signal code after replacing the batteries. If you do not know the air conditioner signal code setting, try each of the signal codes ( ) until you find the code which operates the air conditioner.

- (1-27) - 1111 OPTIONAL PARTS Exterior Parts name Model No. Summary Apple-catechin filter UTR-FA1-1 Fine dust, invisible mold spores, and harmful microorganisms are absorbed onto the filter by static electricity, and further growth is inhibited and deactivated by the polyphenol ingredient extracted from apples. Ion deodorisation filter UTR-FA1-2 The filter deodorizes by powerfully decomposing absorbed odors using the oxidizing and reducing effects of ions generated by the ultra fine-particle ceramic. SU MO TU WE TH FR SA AM PM 6 9 12 15 18 21 Wired remote controller UTY-RNNUM Unit control is performed by wired remote controller. External connect kit UTY-XWZX Use to connect with various peripheral devices and air conditioner PC board.

2. SINGLE TYPE : AOU18RLXFW AOU24RLXFW DTR_AO77E_1 21.12.22

CONTENTS 2. 1. SPECIFICATIONS... 2-1 2. DIMENSIONS... 2-2. REFRIGERANT CIRCUIT... 2-4. WIRING DIAGRAMS... 2-4 5. CAPACITY COMPENSATION RATE FOR PIPE LENGTH.AND HEIGHT DIFFERENCE... 2-6 6. ADDITIONAL CHARGE CALCULATION... 2-7 7. AIR FLOW... 2-8 8. OPERATION NOISE... 2-9 8-1. NOISE LEVEL CURVE... 2-9 8-2. SOUND LEVEL CHECK POINT... 2-1 9. ELECTRIC CHARACTERISTICS...2-11 1. SAFETY DEVICES... 2-12

- (2-1) - 111SPECIFICATIONS Type INVERTER HEAT PUMP Model name AOU18RLXFW AOU24RLXFW Power source 28/2V ~ 6Hz Available voltage range 187-25V ~ 6Hz Starting current A 8. 1.5 Airflow Cooling CFM 1,489 (2,5) 2,1 (,4) Fan rate Heating (m /h) 1,489 (2,5) 2,119 (,6) Type Q'ty Propeller fan 1 Motor output W 1 Sound pressure level Cooling 47 54 db(a) Heating 5 55 Dimensions (H W D) in. 1-7/16 x 5-7/16 x 1-7/16 mm 798 x 9 x 6.4 Heat exchanger type Fin pitch FPI 2 Rows x Stages 2 8 Pipe type Copper Fin Type Aluminium Compressor Type Q'ty Rotary x 1 Motor output W 2,1 Type R41A Refrigerant lb.oz. 4lb.1.1oz. Charge kg 2.1 Refrigerant oil Type POE (RB68) Material Steel Enclosure BEIGE Color Approximate color of MUNSELL 1YR 7.5/1. mm 8 x 9 x Net Dimensions inch 2-/4 x 5-/8 x 1 (H W D) mm 97 x 15 x 445 Gross inch 8-1/4 x 41-1/2 x 17-1/2 Weight Net 15(61) lb.(kg) Gross 15(68) Size Liquid in. Ø/8 (Ø9.52) Gas (mm) Ø5/8 (Ø15.88) Connection pipe Method Flare Max. length ft. 164 (5) [chargeless:66(2)] Max. height difference (m) 98 () Operation range Cooling F 14 to115 (-1 to 46) to 115 (-18 to 46) Heating ( C) 5 to 75 (-15 to 24) to 75 (-18 to 24) Note : Specifications are based on the following conditions. Cooling : Indoor temperature of 8 F(26.67 C)DB / 67 F(19.44 C)WB,and outdoor temperature of 95 F(5 C)DB/75 F(2.9 C)WB. Heating : Indoor temperature of 7 F(21.11 C)DB / 59 F(15 C)WB,and outdoor temperature of 47 F(8. C)DB/4 F(6.11 C)WB. Pipe length : 24.6ft(7.5m) [Outdoor unit - Indoor unit], Height difference : ft. (m) [Outdoor unit - Indoor unit]

- (2-2) - 222DIMENSIONS MODEL: AOU18RLXFW, AOU24RLXFW Unit : in.(mm) Top view 5-/8 (9) (77) 1-1/4 (1) 1 () 1/2 (12) INSTALLATION PLACE 2-5/8 (6) or more 7/8 (21) 17-/8 (44) 2-/4 (8) Front view /8 (9) 25-5/8 (65) Air Flow 15-/4 (4) Side view 14-5/8 (7) Bottom view -7/8 (99) 7-/4 (196) 5-/4 (147) 6-/4 (17) When there are obstacles at the back or front sides. When there are obstacles at the back, side(s), and top. When there are obstacles at the back, side with the installation of more than one unit. 2-5/8 (6) or more -15/16 (1) or more -15/16 (1) or more 9-27/2 (25) or more (Service space) 11-1/16 () or more 9-27/2 (25) or more 9-27/2 (25) or more 11-1/16 () or more

- (2 - ) - REFRIGERANT CIRCUIT MODEL: AOU18RLXFW, AOU24RLXFW Muffler -Way valve (Large) Heat exchanger ( INDOOR ) -Way valve (Small) Pressure switch Compressor 4-Way valve Strainer Sub-accumulator Heat exchanger ( OUTDOOR ) Expansion valve Strainer Cooling Heating Refrigerant pipe diameter Liquid : /8" (9.52 mm) Gas : 5/8" (15.88 mm)

- (2-4) - 444WIRING DIAGRAMS MODEL: AOU18RLXFW

- (2-5) - MODEL: AOU24RLXFW

- (2-6) - CAPACITY COMPENSATION RATE FOR PIPE LENGTH 555 AND HEIGHT DIFFERENCE MODEL: AOU18RLXFW, AOU24RLXFW COOLING Ú1 Pipe length 5m 7.5m 1m 2m m 4m 5m 16ft. 25ft. ft. 66ft. 99ft. 11ft. 164ft. m 99ft. - - - -.92.929.924 2m 66ft. - - -.945.947.945.94 Indoor unit is upper 1m ft. - -.984.961.96.96.956 than outdoor unit. 7.5m 25ft. -.988.988.965.967.964.959 Height difference H 5m 16ft..99.992.992.968.971.968.96 m ft..998 1. 1..976.979.976.971-5m -16ft..998 1. 1..976.979.976.971 Ú2-7.5m -25ft. - 1. 1..976.979.976.971 Indoor unit is under -1m -ft. - - 1..976.979.976.971 than outdoor unit -2m -66ft. - - -.976.979.976.971 -m -99ft. - - - -.979.976.971 Pipe length HEATING 5m 7.5m 1m 2m m 4m 5m 16ft. 25ft. ft. 66ft. 99ft. 11ft. 164ft. m 99ft. - - - -.816.756.686 Ú1 2m 66ft. - - -.872.816.756.686 Indoor unit is upper 1m ft. - -.991.872.816.756.686 than outdoor unit. 7.5m 25ft. - 1..991.872.816.756.686 Height difference H 5m 16ft..986 1..991.872.816.756.686 m ft..986 1..991.872.816.756.686-5m -16ft..981.995.986.868.812.752.68 Ú2-7.5m -25ft. -.99.98.866.81.75.681 Indoor unit is under -1m -ft. - -.981.864.88.748.679 than outdoor unit -2m -66ft. - - -.855.799.74.672 -m -99ft. - - - -.791.7.665 Height difference H Indoor unit Outdoor unit H Outdoor unit H Indoor unit Connection pipe 1 Indoor unit is upper than outdoor unit. Connection pipe 2 Indoor unit is under than outdoor unit.

- (2-7) - 666ADDITIONAL CHARGE CALCULATION MODEL: AOU18RLXFW, AOU24RLXFW Refrigerant type R41A Refrigerant amount lb. oz. zrefrigerant CHARGE 4lb. 1.1oz. g 21 Total pipe length Additional charge ft. ~66 98 11 164 m ~2 4 5 (MAX) oz. (Chargeless) 14.1 28.2 42. g (Chargeless) 4 8 12.4oz./ft. (4g/m)

- (2-8) - 777AIR FLOW MODEL: AOU18RLXFW zcooling Number of rotations (r.p.m.) 62 Air flow 25 m /h 7 l/s 1489 CFM zheating Number of rotations (r.p.m.) Air flow 25 m /h 62 7 l/s 1489 CFM MODEL: AOU24RLXFW zcooling Number of rotations (r.p.m.) Air flow 4 m /h 8 944 l/s 21 CFM zheating Number of rotations (r.p.m.) Air flow 6 m /h 85 1 l/s 2119 CFM

- (2-9) - 888OPERATION NOISE 88888NOISE LEVEL CURVE MODEL: AOU18RLXFW Octave band sound pressure level, db:(db=.2µbar) zcooling 8 7 6 5 4 2 NC-65 NC-6 NC-55 NC-5 NC-45 NC-4 NC-5 NC- NC-25 NC-2 Octave band sound pressure level, db:(db=.2µbar) zheating 8 7 6 5 4 2 NC-65 NC-6 NC-55 NC-5 NC-45 NC-4 NC-5 NC- NC-25 NC-2 NC-15 NC-15 1 1 6 125 25 5 1, 2, 4, 8, Octave band center frequency,hz 6 125 25 5 1, 2, 4, 8, Octave band center frequency,hz MODEL: AOU24RLXFW zcooling 8 zheating 8 7 7 Octave band sound pressure level, db:(db=.2µbar) 6 5 4 2 NC-65 NC-6 NC-55 NC-5 NC-45 NC-4 NC-5 NC- NC-25 NC-2 Octave band sound pressure level, db:(db=.2µbar) 6 5 4 2 NC-65 NC-6 NC-55 NC-5 NC-45 NC-4 NC-5 NC- NC-25 NC-2 NC-15 NC-15 1 1 6 125 25 5 1, 2, 4, 8, Octave band center frequency,hz 6 125 25 5 1, 2, 4, 8, Octave band center frequency,hz

- (2-1) - 88888SOUND LEVEL CHECK POINT 9-/8 in. (1m)

- (2-11) - 999ELECTRIC CHARACTERISTICS Model Name AOU18RLXFW AOU24RLXFW Power Supply Voltage V 28 / 2~ Frequency Hz 6 *1) Max. Operating Current A 14.5 15.5 Starting Current A 8. 1.5 Main Fuse (Circuit breaker) A 2 Current *2) Wiring Spec. Power Cable AWG 12 1 *) Limited wiring length ft.(m) 7 (21) 66 (2) *1) The maximum current is the total current of indoor unit and outdoor unit. *2) Wiring Spec. Selected Sample (Selected based on Japan Electrotechnical Standard and Codes Committee E5) *) Limited Wiring Length: This is the wiring length in case voltage descent is less than 2%. When the wiring length becomes long, please select the wiring of a more larger diameter.

- (2-12) - 1111 SAFETY DEVICES Circuit protection Protection form Current fuse (NEAR THE TERMINAL) Current fuse (MAIN PRINTED CIRCUIT BOARD) Model AOU18RLXFW AOU24RLXFW 5A 25V.15A 25V x 2 Fan motor protection Thermal protection program OFF : 2 +27 F (11 +15 C) -18-1 ON : 221 +27 F (15 +15 C) -18-1 High Pressure Protection Pressure Switch OFF : 4.2±.1MPa ON :.2±.15MPa Thermal protection program (COMPRESSOR TEMP.) OFF : 226 F (18 C) ON : 176 F (8 C) Compressor protection Thermal protection program (DISCHARGE TEMP.) OFF : 2 F (11 C) ON : After 7 minutes Thermal protection program (OUTDOOR TEMP.) (Cooling / Dry mode) OFF : 5 F (-15 C) ON : 14 F (-1 C) OFF : -1 F (-25 C) ON : -4 F (-2 C)