User manual LG LT20-154F1

[. . . ] WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPECIFICATIONS OF ELECTRICAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REFRIGERANT CYCLE DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CONTROL BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 3) Connect the flange and each type of duct. 9-4-9) Thermal insulator (50mm (w), 6mm (t)) Seal Aluminum tape : (50mm-width) ( Thermal insulator(t) ) 25mm (w), 6mm 25mm End B Indoor unit Square duct board (25mm) A Fig. 9-4-9 CAUTION Incomplete thermal insulation of the supply air flange and sealing may occur dewing resulted in falling of water drop. ­ 29 ­ [Square duct] Thermal insulator with sticking material (50mm-width, 6mm (t)) Aluminum tape (Seal : 50mm-width) Thermal insulator at indoor unit side (Stuck already at shipment from the factory) Fit to the arrow arrow direction by pushing. Screws (6 pieces) Indoor unit side Flange (procured locally) Attach by pushing to the arrow direction. (Outside corner direction) Square duct board (25mm-thickness, 64kg/m³ or equivalent) Seal/thermal insulator with sticking material (25mm-width, 6mm (t)) Fig. 9-4-10 [Round duct] Thermal insulator with sticking material (50mm-width, 6mm-thickness) Aluminum tape (Seal : 50mm-width) Thermal insulator at indoor unit side (Stuck already at shipment from the factory) arrow Fit to the arrow direction by pushing. Screws (6 pieces) Round duct Thermal insulator (25mm-thickness, 24kg/m³ or equivalent) Flange Seal/thermal insulator with sticking material (25mm-width, 6mm (t)) Fit the seal/thermal insulator (25mm-width, 6mm-thickness) by pushing to the arrow direction so that no clearance can be found between the flange and the round duct. Fig. Return air side When you do not connect the duct to the return air side (using steel and others), apply a protective measures so that your hands or fingers do not directly touch with the motor or other electric parts. Return air from rear side 1) Follow the procedure same as that for the supply air side. Flange mounting Square duct making Connecting work 2. Return air from lower side 1) Remove the cover for return air at the lower side of the indoor unit, and attach the cover to the opening port at the rear side of the indoor unit. Cover for return air Fig. 9-4-12 2) Mount the flange to the place from where the cover for return air was removed. 4) Arrange the flange and the square duct. ­ 30 ­ 9-4-5. Connection of the Drain Hose · Insert the drain hose completely into the connecting port of the drain pan. · Apply thermal insulation surely to the drain hose with elbow thermal insulation cover. 9-5-3 20 Extended ventilating pipe Insert the hose completely up to the end. 25 or more Downward grading 1/100 or more Fig. 9-5-4 Drain hose Elbow thermal insulation cover Be sure to apply thermal insulation. Drain kit (Option) For drain-up kit installation. Refer the installation manual supplied with the drain-up kit. Fig. If the outdoor units are to be mounted on a wall, make sure that the platform supporting is sufficiently strong. 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. Use copper pipe with 0. 8 mm or more thickness. Flare nut and flare works are also different from those of the conventional refrigerant. Take out the flare nut attached to the main unit of the air conditioner, and use it. · Flaring size : A (Unit : mm) Outer diam. of copper pipe 6. 35 9. 52 12. 7 A R410A 9. 1 13. 2 16. 6 +0 - 0. 4 R22 9. 0 13. 0 16. 2 * In the case of flaring for R410A with the conventional flare tool, pull out it approx. [. . . ] 5) Remove 4 fixing screws (FT screw) of the motor cover. WARNING · When removing the four fixing screws of the motor cover, the fan and fan motor come down simultaneously. Be sure to deposit the motor cover while holding it by hands. Otherwise, it may be resulted in falling of motor with heavy weight. [. . . ]