User manual LG LP-E5082HA

[. . . ] 20 12 FUNCTIONS TO BE IMPLEMENTED LOCALLY . 23 1-EN ­1­ Digital Inverter Outdoor Unit Installation Manual 1 ACCESSORY PARTS AND REFRIGERANT Accessory parts Part name Outdoor unit Installation manual Q'ty 1 Shape Usage (Hand this directly to the customer. ) Drain nipple 1 Waterproof rubber cap 5 Protective bush 1 For protecting wires (pipe cover) Guard material for passage part 1 For protecting passage part (pipe cover) For conforming to EMC standards for twin/triple systems Color: White (Used for indoor/outdoor connecting wires) For conforming to EMC standards for twin/triple systems Color: Gray (Used for outdoor fan motor lead wire) For conforming to EMC standards for twin/triple systems (For clamping the clamp filter and ferrite core) Ferrite core 1 EN Clamp filter 1 Banding band 2 Refrigerant Piping · Piping kit used for the conventional refrigerant cannot be used. · Use copper pipe with 0. 8 mm or more thickness for Ø9. 5 mm. Use copper pipe with 1. 0 mm or more thickness for Ø15. 9 mm. [. . . ] Insert a flare nut into the pipe, and flare the pipe. As the flaring sizes of R410A differ from those of refrigerant R22, the flare tools newly manufactured for R410A are recommended. * Be sure to wear heavy work gloves while working. 11-EN ­ 11 ­ Digital Inverter Outdoor Unit Installation Manual However, the conventional tools can be used by adjusting projection margin of the copper pipe. B Tightening of Connecting Part 1. Align the centers of the connecting pipes and fully tighten the flare nut with fingers. Then fix the nut with a spanner as shown in the figure and tighten it with a torque wrench. As shown in the figure, be sure to use two spanners to loosen or tighten the flare nut of the valve on the gas side. If you use a single spanner, the flare nut cannot be tightened to the required tightening torque. On the other hand, use a single spanner to loosen or tighten the flare nut of the valve on the liquid side. (Unit: N·m) Outer dia. of copper pipe 9. 5 mm (diam. ) 15. 9 mm (diam. ) Tightening torque 33 to 42 (3. 3 to 4. 2 kgf·m) 68 to 82 (6. 8 to 8. 2 kgf·m) Flare nut Projection margin in flaring : B (Unit : mm) Rigid (Clutch type) Outer diam. of copper pipe 9. 5 15. 9 R410A tool used R410A 0 to 0. 5 1. 0 to 1. 5 Conventional tool used Flaring diam. of copper pipe 9. 5 15. 9 A+0 ~ A­0. 4 13. 2 19. 7 A * In case of flaring for R410A with the conventional flare tool, pull it out approx. 0. 5 mm more than that for R22 to adjust to the specified flare size. Check that the vacuum pump oil is filled up to the specified line of the oil gauge. 2 * When air is not charged, check again whether the connecting port of the discharge hose, which has a projection to push the valve core, is firmly connected to the charge port. Compound pressure gauge ­101 kPa (­76 cmHg) Handle Lo Charge hose (For R410A only) Pressure gauge Gauge manifold valve Handle Hi (Keep fully closed) Charge hose (For R410A only) Vacuum pump adapter for counter-flow prevention (For R410A only) Vacuum pump Packed valve at gas side ­ 14 ­ 14-EN Digital Inverter Outdoor Unit Installation Manual How to open the valve Confirm the structure surely and then open or close the valve. Replenishing refrigerant This model is a 30 m chargeless type that does not need to replenish refrigerant for refrigerant pipes up to 30 m. When a refrigerant pipe longer than 30 m is used, add the specified amount of refrigerant. Liquid side Open the valve with a 4-mm hexagon wrench. Gas side Valve unit Refrigerant replenishing procedure 1. After the vacuuming of the refrigerant pipe is completed, close the valves and then charge refrigerant while the air conditioner is not working. When the refrigerant cannot be charged to the specified amount, charge the required amount of refrigerant from the charge port of the valve on the gas side during cooling. Using a minus screwdriver, turn it counterclockwise by 90° until it hits the stopper. (Full open) Charge port Flare nut Requirement for replenishing refrigerant Replenish liquid refrigerant. When gaseous refrigerant is replenished, the refrigerant composition varies, which disables normal operation. Handle position Closed completely Stopper pin Opened fully Additional amount of refrigerant 31~50m: L 40g×(L-30) Main stopper Movable part of valve (Stem) · While the valve is fully opened, after the screwdriver has reached the stopper, do not apply torque exceeding 5N·m. Applying excessive torque may damage the valve. Valve handling precautions · Open the valve stem until it strikes the stopper. It is unnecessary to apply further force. [. . . ] When a scratch or dent is heavy, be sure to use the new pipes for the works. When the thickness of the existing pipe is thinner than the specified "Pipe diameter and thickness" be sure to use the new pipes for the works. · The operating pressure of R410A is high (1. 6 times of R22 and R407C). If there is a scratch or dent on the pipe or thinner pipe is used, the pressure strength is poor and may cause breakage of the pipe at the worst. [. . . ]