LK-IM-12 50Hz SINGLE PACKAGED AIR CONDITIONERS INSTALLATION & MAINTENANCE INSTRUCTIONS ENGLISH • Please read this instruction sheet completely before installing the product. • Installation work must be performed in accordance with national wiring standards by authorized personnel only. Front View Air Outlet Vents (Rear) E/Heater Access Panel Air Intake Vents (Side) Unit Power Wires Control and Compressor Access Panel Rear View Refresh Air Hood Supply Return P/No.
TABLE OF CONTENTS 1.The following should be always observed for safety ...............................3 2. Dimensional Data ........................................................................................4 3. Installation of Unit .......................................................................................6 4. Ductwork ......................................................................................................7 5. Condensate Drain Piping ..........................................
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 owner's manual in a handy place . WARNING Perform the installation securely referring to the installation manual. Do not install it yourself (customer).
2. Dimensional Data Single packaged cooling unit are designed for outdoor mounting with vertical condenser discharge. They can be located either at ground level or on roof. Each unit contains an operating charge of Refrigerant 22 as shipped. UNIT Dimensions (Figure 1A) CLEARANCE 34" Unit: inch(mm) UNITS LK-0580CC/0580HC/0680CH A 41.93(1065) B 43.70(1110) C 50.39(1280) D 29.49(749) E 9.65(245) F 2.36(60) G 2.
Horizontal Application Unit(Figure 1D) Rear View Showing Duct Openings For Horizontal Air Flow i 69.53(1,766) 74.02(1,880) j 95.98(2,438) 109.21(2,774) k 63.11(1,603) 69.69(1,770) CLEARANCE 34" n m CLEARANCE 16"(HORIZONTAL) CLEARANCE 34" l Center Line of Hole h k l 6.29(160) 7.68(195) m 8.66(220) 11.89(302) n 11.02(280) - j 1" Dia. Hole Control Wires i 1.5" Dia. Hole Power Wires Figura 1D 1.5" Dia.
3. Installation of Unit 1) Check for damage after unit is unloaded. Report promptly, to the carrier, any damage found to unit. Do not drop unit. 2) Check the unit nameplate to determine if the unit voltage is correct for the application. Determine if adequate electrical power is available. Refer to the application specifications. 3) Check to be sure the refrigerant charge has been retained during shipment. Access to 1/4" flare pressure taps may be gained by removing compressor compartment access panel.
4. Ductwork 2. Ductwork construction guidelines Connections to the unit should be made with three-inch canvas connectors to minimize noise and vibration transmission. Elbows with turning vanes or splitters are recommended to minimize air noise and resistance. The first elbow in the ductwork leaving the unit should be no closer than three times blower diameter to avoid turbulence and back pressure. 3.
5. Condensate Drain Piping A. CONDENSATE DRAIN A 3/4 inch male condensate drain connection is located on the corner of the unit next to the evaporator section access panel. A trap should be installed and filled with water before starting the unit to avoid air from being drawn through. Follow local codes and standard piping practices when running the drain line. Pitch the line downward, away from the unit, and avoid long horizontal runs. See Figure 4. Do not use reducing fittings in the drain lines.
7. Installation of remote controller • Install the remote control box and cord correctly. • As the room temperature sensor is in the remote controller, the remote control box should be installed in such places away from direct sunlight and high humidity and direct supply cold air. INSTALLATION OF THE REMOTE CONTROL BOX ROUTING OF THE REMOTE CONTROL CORD • Select places that is not splashed by water. • Select control position after receiving customer approval.
8. Electrical Wiring Check the unit nameplate for the required supply voltage. Determine if adequate electrical power is available. Refer to application specifications. Electrical wiring and grounding must be installed in accordance with local codes and with the National Electric code Latest Revision. Electrical Power It is important that proper electrical power is available for the unit. Voltage variation should remain within the limits stamped on the nameplate.
■ Cooling only - 1 Comp, 2 Heater(Figure 5B) Thermostat(Cooling only model) AC 24V R 2 1 COMP1 Y T/B 2 HEATER1 W • See wiring diagram for details RD WH BK OR BR FAN G HEATER2 W1 NOTE MAIN PCB ASM CN-THERMOSTAT ENGLISH Case of remote controller application: Don't remove these wires.
■ Heat pump - 1 Comp, 2 Heater(Figure 5E) Thermostat(Heat pump model) Case of remote controller application: Don't remove these wires.
9. Control Wiring Remote controller conductors are standard thermostat wire 22 to 14 ga. Field Installed DC Control Wiring Before installing the connecting wiring between the components utilizing a DC analog output/input signal and the unit, refer to the following table for conductor sizing guidelines and; 1) Use standard copper conductor thermostat wire unless otherwise specified.
(Note) • Keep all wires away from the refrigerant pipe. • To protect the control cord from electrical noise, place DC wires at least 0.2 inch away from AC wires. • Following diagram is the example of wiring arrangement Clamp for power wires Power wires Control wires Clamp for control wires Figure 7 Clamp for power wires Note Thermostat The anticipator in the thermostat shall be removed, if a unit which R has micro control function is controlled by thermostat with G anticipator.
10. Start-Up Pre-Start Quick Check List ➔ See Figure 1.
11. Test Mode Procedure Operating the unit from the roof using the test mode. WARNING When operating the unit the test mode, the evaporator access panel and the control box cover, must be closed. Failure to ensure that the evaporator access panel and control box cover is in place could resuit in severe personal injury or death. Step test Mode The step test mode is initiated by pressing test key(tact switch located on MAIN CONTROLLER).
STEP * INDOOR *OUTDOOR *OUTDOOR FAN 1 FAN 2 COMP 1 COMP 2 FAN 1 O X 2 O 3 O 4 5 O : ON X : OFF * * * HEATER 1 HEATER 2 HUMIDIFIER LED 1 LED 2 LED 3 LED 4 X X X X X X O X X X X X O O X X X X O O O O X X X O O O O O X X 6 O X X X X O X 7 O X X X X O O 8 O X X X X O 9 X X X X X X O X X X X X O X X X O O X X X X X O X X O X O X X X O O X X O O O X O O X X X O X X X X X X (Note) 1.
12. Trial Run Mode Operating the unit in the room without concerning about set temperature. AUTO SWING OPERATION SET TEMP Room Temp Pressing simultaneously 'Room Temperature Checking Button' and 'Hour Button' for 3 seconds regardless of room temperature setting, the unit operates in cooling mode for 18 minutes and stops.
13. Evaporator Fan Adjustment Important: Fan Break Horsepower (BHP) listed in the Table is the percentage range of nameplate amperage the motors will safely work within, before an oversized motor is required. On the below 6.25RT model indoor fan motor is shipped to operate in High speed cooling and heating. It can be rewired to operate in Low or super Hi speed cooling and heating. See wiring diagram in the unit how to rewire. On the above 7.
14. Start-up Crankcase heaters are energized as long as there is power to the unit. Energize heaters 24 hours prior to unit start-up. Cooling Mode Verify that the unit airflow rate is adjusted according to information provided in "Determining Evaporator Fan Adjustment" section of this manual. To start the unit in the cooling mode, close unit disconnect switch and set the operating mode to COOL and move the cooling setpoint approximately 5˚C below room temperature.
After the unit has operated in the cooling mode for a short period of time, install pressure gauges on the gauge ports of the discharge and suction line valves. Note: Always route refrigerant hoses through the port hole provided and have compressor access panel in place. Check the suction and discharge pressures and compare them to the normal operating pressures provided in the unit's Service Manual. Note: Do not use pressures from Service manual to determine the unit refrigerant charge.
15.
Condenser coil Maintenance Performed by Serviceman-Cooling Season To keep your unit operating safely and efficiently, the manufacturer recommends that a qualified serviceman check the entire system at least once each year, or more frequently if conditions warrant. Your serviceman may examine these areas of your unit: ➔ For cleaning 1. Filters 2. Motors and drive system components 3. Condenser coils ➔ For cleaning 4. Safety Controls ➔ For mechanical cleaning 5.
Memo ENGLISH 24
