LG 3828A30087L Installation Instructions Manual Download Page 13

Page: 13 / 17

ENGLISH

CAUTION

Air

Conditioner

Circuit Breaker
Use a circuit
breaker or time
delay fuse.

Main power source

If a power plug is not to be used, provide a circuit breaker between power source and the
unit as shown below.

Connecting cable

Connect the cable to the indoor unit

1. Connect the wires to the terminals on the

control board individually according to the
outdoor unit connection.

• Ensure that the color of the wires of outdoor unit

and the terminal No. are the same as those of
indoor unit respectively.
(Refer to Wiring diagram on page10.)

• Be sure to refer to the wiring diagram label

inside the grille and carry out the correct
field wiring.
Wrong wiring can cause the unit to misoperate
to result in a fire hazard.

• Check local electrical codes and any specified

wiring instructions or limitations.

WARNING

Summary of Contents for 3828A30087L

Page 1: ...en lifting to reduce strain on your back Sharp edges or thin aluminum fins on the air conditioner can cut your finger When installing in a wall Make sure the wall is strong enough to hold the unit s weight It may be necessary to construct a strong wood or metal frame to provide added support in a room Properly insulate any tubing run inside a room to prevent sweating that can cause dripping and wa...

Page 2: ...2 Liquid side 1 4 Refer to page 4 Insulation materials Additional drain pipe Outer Diameter 15 5mm 5 8 Two type B screws Level gauge Screw driver Electric drill Hole core drill Ø50mm 1 97 Horizontal meter Flaring tool set Specified torque wrenches Liquid side 1 8kg m 13ft lbs 9K 12K 18K 4 0kg m 28 9ft lbs 24K Gas side 5 5kg m 39 8ft lbs 9K 12K 6 6kg m 47 7ft lbs 18K 24K Refer to page 9 Spanner Hal...

Page 3: ...s not applied to the sections If the electrical part cover of the indoor unit and or the service panel of the outdoor unit are not attached securely it could result in a fire or electric shock due to dust water etc Attach the electrical part cover to the indoor unit and the service panel to the outdoor unit securely The use of defective parts could cause an injury due to a fire electric shock the ...

Page 4: ...ce animals and plants in the path of the warm air Take the air conditioner weight into account and select a place where noise and vibration are minimum Select a place so that the warm air and noise from the air conditioner do not disturb neighbors Rooftop Installations If the outdoor unit is installed on a roof structure be sure to level the unit Ensure the roof structure and anchoring method are ...

Page 5: ... for fixing cover pipe Pull up the cover side of desired connecting direction then cover side is separated In case connecting direction is left or right path through the hole of cover side B When connecting pipe path through rear wall don t remove the hole Drain hose junction Remove the rubber stopple of desired drain direction As the following picture Insert drain hose in the handle of drain pan ...

Page 6: ...face Refer to No 5 on this page when making a hole in the wall First Drive the two points of the upper parts by screws Leave 10mm 0 39 for hanging product Drive the lower parts after facing the hole of product with plastic anchors and fix completely the upper screws In case of nothing wrong in the matter connect the pipe and the wire Installation manual reference Horizontality IN STALLATIO N GUID ...

Page 7: ...ing completed burr removal not possible to put them on after flaring work C Copper pipe 90 Slanted Uneven Rough Bar Copper pipe Clamp handle Red arrow mark Cone Yoke Handle Bar A Pipe Reamer Point down Flaring work Carry out flaring work using flaring tool as shown below Firmly hold copper pipe in a die in the dimension shown in the table above D Check Compare the flared work with figure below If ...

Page 8: ...ion will not damage furniture or floors Foamed polyethylene or equivalent is recommended Connecting cable Gas side piping Liquid side piping Drain hose Loop Wrap the insulation material around the connecting portion Overlap the connection pipe insulation material and the indoor unit pipe insulation material Bind them together with vinyl tape so that there is no gap D Plastic bands Insulation mater...

Page 9: ...wrench Outdoor unit Gas side piping Bigger diameter Liquid side piping Smaller diameter Torque wrench Outdoor unit Liquid side piping Smaller diameter Gas side piping Bigger diameter Torque wrench Pipe Size Torque GAS LIQUID 9K 1 2 5 5kg m 1 4 1 8kg m 12K 1 2 5 5kg m 1 4 1 8kg m Capacity Btu h Installation Information For right piping Good case For right piping follow the instruction below Press o...

Page 10: ...several inches longer than the required length for wiring 7 Use lock nuts to secure the conduit tubes 1 shows field wiring 2 Separately wire the high and low voltage line 3 Use heat proof electrical wiring capable of withstanding temperatures up to 167 F 4 Use outdoor and waterproof connection cable rated more than 300V for the connection between indoor and outdoor unit For example Type SJO WA Be ...

Page 11: ...it panel When connecting each power wire to the corresponding terminal follow instructions How to connect wiring to the terminals and fasten the wire tightly with the fixing screw of the terminal plate How to connect wiring to the terminals For solid core wiring or F cable 1 Cut the wire end with a wire cutter of wire cutting pliers then strip the insulation to expose the solid wire about 25mm 15 ...

Page 12: ...ical parts Seal small openings around pipings with a gum type sealer In cases where the Outdoor unit is installed above the Indoor unit perform the following Tape the piping and connecting cable from down to up Secure the taped piping along the exterior wall Form a trap to prevent water entering the room Fix the piping onto the wall by saddle or equivalent C Seal a small opening around the pipings...

Page 13: ...he terminals on the control board individually according to the outdoor unit connection Ensure that the color of the wires of outdoor unit and the terminal No are the same as those of indoor unit respectively Refer to Wiring diagram on page10 Be sure to refer to the wiring diagram label inside the grille and carry out the correct field wiring Wrong wiring can cause the unit to misoperate to result...

Page 14: ... and dry nitrogen gas cylinder to this service port with charge hoses Pressurize the system to no more than 150 P S I G with dry nitrogen gas and close the cylinder valve when the gauge reading reached 150 P S I G Next test for leaks with liquid soap Lo Hi Indoor unit Outdoor unit Manifold valve Charge hose Nitrogen gas cylinder in vertical standing position Pressure gauge A B Do a leak test of al...

Page 15: ...urely with an adjustable wrench This process is very important to prevent leakage from the system Replace the valve caps at both gas and liquid side service valves and fasten them tight This completes air purging with a vacuum pump The air conditioner is now ready to test run C D 1 Remove the caps from the 2 way and 3 way valves 2 Remove the service port cap from the 3 way valve 3 To open the 2 wa...

Page 16: ...er assembly exactly Fix power cord in the bottom groove of cover side left A B Assemble connecting lead wire with controller and first fix the upper part of panel front then match the lower part of panel front Panel Front Connector C Drive two screws ...

Page 17: ...rged and charge should be removed If the actual pressure are lower than shown the system is most likely undercharged and charge should be added The air conditioner is now ready for use A C B Bolt Tubing connection This is performed when the unit is to be relocated or the refrigerant circuit is serviced Pump Down means collecting all refrigerant in the outdoor unit without loss in refrigerant gas C...

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