User manual LG FR-686A

[. . . ] CONSTRUCTION VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPECIFICATIONS OF ELECTRICAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REFRIGERANT CYCLE DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] to allow drainage power cord Extension drain hose (Option: RB­821SW) · · · · · · Total piping length: Two room (A+B) Multi · This air conditioner accepts a connection piping length of up to 30 m. · There is no need to add refrigerant as long as the length of the connection piping is 20 m or less. Outdoor · You will need to add 20 g of refrigerant per meter of unit added connection piping for installations requiring connection piping to be between 21 m to 30 m. · Minimum piping length: A or B = 2 m or more · Maximum indoor piping length: A or B = 20 m or less · Maximum piping height difference: A or B = 10 m or less · Maximum piping / height difference between two rooms = 10 m or less If the outdoor unit is to be mounted on a wall, make sure the platform supporting it is sturdy enough. The platform should be designed and manufactured to maintain its strength over a long period of time, and sufficient consideration should be given to ensuring that the outdoor unit will not fall. When the outdoor unit is to be mounted high on a wall, take particular care to ensure that parts do not fall, and that the installer is protected. When doing installation work at ground level, it is usual to make wiring and pipe connections to the indoor units, first, and then to make connections to the outdoor unit. However, if outdoor work is difficult it is possible, instead, to make changes to the procedure. For example, by making adjustments to the wiring and piping lengths on the inside (rather than the outside). A place where the drain water does not cause any problems. The outdoor unit should not be installed with one indoor unit only. The copper pipe gauge is useful for adjusting projection margin size. Tighten the connection Align the centers of the connecting pipes and tighten the flare nut as much as possible with your fingers. Then tighten the nut with a wrench and torque wrench as shown in the figure. Half union Flare nut Externally threaded side Internally threaded side Use a wrench to secure. Use a torque wrench to tighten. CAUTION · Do not apply excessive force. Otherwise, the nut may break. Outer diameter of copper pipe 6. 35 mm 9. 52 mm 12. 7 mm (Unit: N·m) Tightening torque 14 to 18 (1. 4 to 1. 8 kgf·m) 33 to 42 (3. 3 to 4. 2 kgf·m) 50 to 62 (5. 0 to 6. 2 kgf·m) Flare at indoor unit side Flare at outdoor unit side ­ 72 ­ · Tightening torque for connection of flare pipe The pressure of R410A is higher than R22. 1. 6 times. ) Therefore securely tighten the flare pipes which connect the outdoor unit and the indoor unit with the specified tightening torque using a torque wrench. If any flare pipe is incorrectly connected, it may cause not only a gas leakage but also trouble in the refrigeration cycle. Connectable capacity class A M14 M18 10, 13 10, 13, 16*1 B 10, 13 10, 13, 16*1 Total 23 26 6. 35 9. 52 6. 35 9. 52 Unit A Indoor unit Outdoor unit Unit B *1 When connecting a capacity class 16 pipe to the indoor unit, attach the expander which is available as an optional accessory to the 9. 52 mm diameter packed valve of the outdoor unit. 10-5-3. Evacuating After the piping has been connected to the indoor unit, perform the air purge. AIR PURGE Evacuate the air in the connecting pipes and in the indoor unit using a vacuum pump. Do not use the refrigerant in the outdoor unit. For details, see the vacuum pump manual. Use a vacuum pump Be sure to use a vacuum pump with counter-flow prevention function so that oil inside the pump does not flow back into the air conditioner pipes when the pump stops. (If oil inside the vacuum pump enters into the air conditioner circuit which uses R410A, trouble with the refrigeration system may develop. ) 1. [. . . ] When there is the heating part near the electric parts box, a fire may generate. Be sure to set the heating part on the outdoor unit base plate at the fan room side or near it. (within 20cm from the outdoor unit base plate) * Be careful that the cord heater does not hit the fan. Fix the cord heater without any loosening or sag. [. . . ]