CEILING CASSETTE TYPE AIR CONDITIONERS INSTALLATION INSTRUCTIONS Indoor Unit Anti-bacteria filter Air Intake Air Outlet Outdoor Unit Air Intake (side, rear) Air Intake (side, rear) Air Outlet Air Outlet Control cover Control cover Connecting wire Connection Piping Drain hose 48K Connecting wire Connection Piping Drain hose 36K Cooling & Heating Model has included Drain Elbow P/No.: 3828A20055U ENGLISH • Please read this instruction sheet completely before installing the product.
OUT-LINE OF INSTALLATION 1.The following should be always observed for safety ...............................3 2.Installation of Indoor, Outdoor Unit ............................................................4 Installation Works Installation Parts Required Tools 1) Selection of the best location ......................4 • Connecting cable • Level 2) Ceiling opening dimensions and hanging bolt location(unit: mm).................................
1. The following should be always observed for safety WARNING Could lead to death, serious injury, etc. CAUTION Could lead to serious injury in particular environments when operated incorrectly. • After reading this manual, be sure to keep it together with the instruction manual in a handy place . WARNING Perform the installation securely referring to the installation manual. Do not install it yourself (customer).
yyy ;;; ;;; yyy ;y;; Ceiling Ceiling Board 50 or more Ceiling Board 30 or less • There should not be any heat source or steam near the unit. • There should not be any obstacles to prevent the air circulation. • A place where air circulation in the room will be good. • A place where drainage can be easily obtained. • A place where noise prevention is taken into consideration. • Do not install the unit near the door way. • Ensure the spaces indicated by arrows from the wall, ceiling, or other obstacles.
2. Ceiling opening dimensions and hanging bolt location • The dimensions of the paper model for installing are the same as those of the ceiling opening dimensions. 1000 (Ceiling opening) Ceiling 1000 (Ceiling opening) 840 Unit size 840 Unit size 164 672 (Hanging bolt) 164 107.5 ;;;; ;;;; Level gauge Unit:mm CAUTION • This air-conditioner uses a drain pump. • Horizontly install the unit using a level gauge. • During the installation, care should be taken not to damage electric wires.
3. The Indoor Unit Installation Ceiling Nut (W3/8 or M10) Flat washer for M10 (accessory) Ceiling board Spring washer (M10) Flat washer for M10 (accessory) Nut (W3/8 or M10) Air Conditioner body Ceiling board Paper model for installation Adjust the same height • The following parts is option.
WIRED REMOTE CONTROL INSTALLATION DISASSEMBLING Front case ENGLISH Th • Separate the under plate from Remote control box. el ow er pa rt Lever carefully the box open using a screw driver, etc. Remote control box body • Fix the cord clamps on the wall by ø 3 tapping screws (accessory). • Fix the remote control cord.
5. Wiring Connection • Open the control box cover and connect the Remote controller cord and Indoor power wires.
ELECTRICAL WIRING Main power source Circuit Breaker Use circuit breaker or time delay fuse. Switch box Refrigerant pipe CONNECTING THE CABLE TO OUTDOOR UNIT 1. Remove the Cover control from the unit by loosening a screw. Connect the wires to the terminals on the control board individually as following. 2. Secure the cable onto the control board with the holder (clamper). 3. Refix the cover control to the original position with the screw. 4.
6. Connecting Pipes to the Indoor Unit • Preparation of Piping Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure. Copper tube Slanted Uneven Rough 90° 1) Cut the pipes and the cable. ■ Use the accessory piping kit or the pipes purchased locally. ■ Measure the distance between the indoor and the outdoor unit. ■ Cut the pipes a little longer than measured distance. ■ Cut the cable 1.5m longer than the pipe length.
Piping Connection Liquid side Indoor unit Outdoor unit Flare connection Gas side Flare connection Vacuum drying After completing the piping connection, execute vacuum drying for the connecting piping and the indoor unit. The vacuum drying must be carried out using the service ports of both the liquid and gas side valves. Model Liquid side piping Gas side piping 36K Btu/h Ø 9.52mm Ø15.88mm 48K But/h Ø 9.52mm Ø19.05mm CAUTION Use two wrenches and tighten with regular torque. Ø6.35mm Ø9.52mm Ø12.
7. Installation of Decorative Panel The decorative panel has its installation direction. Before installing the decorative panel, always remove the paper template. 1. Temporarily fix two decorative panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount 10mm in length.) The fixing screws (hexagon M5 screw) are included the indoor unit box. 2. Remove the air inlet grille from the decorative panel. (Remove the hook for the air inlet grille cord.) 3.
CAUTION Install certainly the decorative panel. Cool air leakage causes sweating. Water drops fall. Bad example Air conditioner unit Air conditioner unit Air Ceiling board Cool air leakage (no good) Ceiling board Decorative panel Decorative panel Fit the insulator (this part) and be careful for cool air leakage 8.
HEAT INSULATION 1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C). Fastening band 2. Precautions in high humidity circumstance: (accessory) This air conditioner has been tested according to the "KS Standard Conditions with Mist" and confirmed that there is not any default. However, if it is operated for a long time in high humid atmosphere (dew point Refrigerant piping temperature: more than 23°C), water drops Indoor unit are liable to fall.
In case of the Outdoor Unit being installed above position of the Indoor Unit. Seal a small opening around the pipings with gum type sealer. Trap 3. Form the pipings gathered by taping along the exterior wall, and make the trap prevent water from entering into the room. 4. Fix the pipings onto the wall by saddle or equivalent. 3. Test running 1) PRECAUTIONS IN TEST RUN • The initial power supply must provide at least 90% of the rated voltage. Otherwise, the air conditioner should not be operated.
2) Connection of power supply 1. Connect the power supply cord to the independent power supply. • Circuit breaker is required. 2. Operate the unit for fifteen minutes or more. 3) Evaluation of the performance 1. Measure the temperature of the intake and discharge air. 2. Ensure the difference between the intake temperature and the discharge one is more than 8°C (Cooling) or reversely (Heating).
4. Optional Operation (1) Open the rear cover of the wired remote-controller to set the mode. (2) Select one of three selectable modes as follows. • Position 1: The room temperature is controlled by the thermistor of the main body. • Position 2: The room themperature is controlled by the thermistor of the wired remote-controller, control the temperature according to the position of wired remote-controller.
2) Adjusting air volume to the height of ceiling You can choose the RPM(or air volume) of indoor motor according to the height of ceiling to supply the comfortable atmosphere to consumers. Procedure 1. Choose the selectable position in the table after measuring the height of ceiling. Ceiling height Mode of slide switch High Ceiling Standard Low Ceiling more than 4.0m 3.2~4.0m less than 3.2m Change of air volume Increasing Decreasing Remark Maunfactured in standard mode 2.
3) Group Control(Optional Wiring) Wiring design Main PCB Indoor Unit 1 Indoor Unit 2 Terminal(Local Supply) Block Connector Terminal(Local Supply) Block Connector RED(12V) YL(SIGNAL) BR(GND) AUTO SWING OPERATION SET TEMP Room Temp FAN SPEED HI MED LO Time Timer Operation unit On Off Set no.
Wiring Diagram for Heat pump(36K) OUTDOOR WIRING DIAGRAM NC BR T/B1 4 6 32 B CH1 3 4 5 6 7 8 YL BL WH BK BK BL BK WH RD 1 2 3 4 5 GN/YL 6 WH T1 T2 T3 CM FMo1 BK WH BL RD BK BK 20SV FMo2 BK BK GN/YL TMo FLOAT S/W ONLY LT-D xxx2HL GN/YL REMOTE CONTROL CN - DISP RD BK WH YL To the indoor unit Co YL OR BK 5 Co WH RD 4 OR PIPE THERMISTOR BL 3 BK BK STEP MOTOR FUSE T3.
