User manual LG LF300CP

[. . . ] The seriousness is classified by the following indications. WARNING CAUTION This symbol indicates the possibility of death or serious injury. This symbol indicates the possibility of injury or damage. s Meanings of symbols used in this manual are as shown below. Be sure not to do. Be sure to follow the instruction. WARNING s Installation Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit. [. . . ] Drill the piping hole with 70mm diameter holecore drill at either the right or the left of indoor unit. The hole should be sightly slant to the outdoor side. Insert the plastic tube through the hole. Cut the extruded outside part of the plastic tube, if necessary. INSIDE Plastic tube (Bushing) OUTSIDE Wall Tilt Cut if necessary More than 15mm Outdoor unit Installation 1. Install the outdoor unit on the concrete or any solid base securely and horizontally by securing it with bolts (Ø12mm) and nuts. If there is any vibration transmitted to the building, mount the rubber underneath the outdoor unit. Refrigerant amount Before shipment, this air conditioner is filled with the rated amount of refrigerant including additional amount required for air-purging, subject to 5m piping length. (The rated amount of refrigerant is indicated on the name plate. ) But when the piping length exceeds 5 meters, additional charge is required according to the following table. (Unit: g) MODEL 20K/28K/30K/40K (Btu/h) 44K/50K (Btu/h) 80K (Btu/h) REFRIGERANT CHARGE 30 per 1m 40 per 1m 80 per 1m Example) 28K/30K In case of 10m long pipe(one-way), the amount of refrigerant to be replenished is: (10 - 5) x 30 = 150g 8 Floor Standing type Air Conditioner Installation of Unit Installation Method ENGLISH No. 1 2 Installation works Preparation of tools and installation parts Flaring the pipes Descriptions Preparation of installation To insert the flare nuts, mounted on the connection parts of both indoor and outdoor unit, onto the copper pipes. To reduce the flow resistance of refrigerant. Connection of long piping Connecting the pipings of the outdoor unit. Connecting the pipings of the indoor unit. 3 4 5 6 7 8 9 Pipe bending Connection of installation parts (elbows, socket etc) Tighten the flare nut (outdoor) Blowing the pipings Tighten the flare nut (indoor) Check a gas-leakage of the connecting part of the pipings. Insert the connecting cable into the indoor unit through the hole. · Do not connect the cable to the indoor unit · Make a small loop with the cable for easy connection later. Tape the tubing and the connecting cable. Connecting the pipings to the indoor unit. 4 Plastic tube (Bushing) Installation Manual 13 Installation of Unit Connecting pipings to the outdoor unit . 1. Align the center of the pipings and sufficiently tighten the flare nut with fingers. Finally tighten the flare nut with torque wrench until the wrench clicks. · When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on the wrench. PIPE SIZE 1/4" 3/8" 1/2" 5/8" 3/4" TORQUE 1. 8 Kg. m 4. 2 Kg. m 5. 5 Kg. m 5. 5 Kg. m 6. 5 Kg. m Gas side piping Outdoor unit Liquid side piping Torque wrench Connecting the cables to the outdoor unit 1. Open the control board cover from the outdoor unit by removing the screws. Connect wires to the terminals on the control board individually and secure the cables onto the control board with clamp. [. . . ] Remove the valve stem nuts, and fully open the stems of the 2-way and 3-way valves with a hexagon wrench. Tighten the valve stem nuts of the 2-way valve and 3-way valve. Disconnect the charge hose and fit the nut to the service port. (Tightening torque: 1. 8kg. m) Indoor unit Liquid side Closed 2-way valve/ 3-way valve Outdoor unit Gas side 3-way valve Closed Vaccum pump OPEN CLOSE 16 Floor Standing type Air Conditioner Installation of Unit Form the Piping 1. [. . . ]