LG MC12AHR Installation Manual Download Page 3

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Installation Parts Provided

Installation Manual 3

ENGLISH

Installation Parts Provided

Type "A" screws and plastic anchors

Type "B" screws

Holder Remote Control

Installation plate

Standard Type

5. Copper pipe (Liquid side)
6. Copper pipe (Gas side)

7. Connecting cable

more than

20cm

more than

70cm

more than

20cm

more than

20cm

more than

70cm

more than

30cm

more than

30cm

Air Outlet

Air Intake

(side, rear)

Connection pipe
Drain hose

Connecting wire

Control cover

more than

30cm

Summary of Contents for MC12AHR

Page 1: ...ly before installing the product Installation work must be performed in accordance with the national wiring standards by authorized personnel only Please retain this installation manual for future reference after reading it thoroughly P NO 3828A22235A ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH ...

Page 2: ...ngs and Long pipe Setting 17 18 Air Purging 19 20 Use of Front Panel 21 Test running 22 Combination indoor units 23 Combination table of Models 24 Level gauge Screw driver Electric drill Hole core drill ø50mm Horizontal meter Flaring tool set Specified torque wrenches 1 8kg m 4 2kg m 5 5kg m 6 6kg m different depending on model No Spanner Half union A glass of water Screw driver Hexagonal wrench 4...

Page 3: ...s Holder Remote Control Installation plate Standard Type 5 Copper pipe Liquid side 6 Copper pipe Gas side 7 Connecting cable more than 20cm more than 70cm more than 20cm more than 20cm more than 70cm more than 30cm more than 30cm Air Outlet Air Intake side rear Connection pipe Drain hose Connecting wire Control cover more than 30cm ...

Page 4: ...electric shock Do not use damaged power cable It will cause fire or electric shock For installation always contact the dealer or service center Otherwise it may cause fire electric shock explosion or injury Do not install the product on an defected installation stand Otherwise It may cause injury or accident Safety Precautions To prevent injury to the user or other people and property damage the f...

Page 5: ...n and repair of product Otherwise it may cause failure of product Install the drain hose to ensure that drain can be securely done Otherwise it may cause water leakage Keep the level even in installing the product Otherwise it may cause vibration or water leakage Do not install the product where the noise or hot wind from the outdoor unit could give any casualty to the neighborhood Otherwise it ma...

Page 6: ...enser is not restricted 2 Ensure that the spaces indicated by arrows around front back and side of the unit 3 Do not place animals and plants in the path of the warm air 4 Take the air conditioner weight into account and select a place where noise and vibration are minimum 5 Select a place so that the warm air and noise from the air conditioner do not disturb neighbors Rooftop Installations If the...

Page 7: ...5 24k 50 25 15 7 5 30k 70 25 15 7 5 Capacity Btu h Total Length Max Length A B Max Elevation h1 In In Elevation h2 40k 100 50 50 15 30 10 48k 110 50 60 15 30 10 56k 120 50 70 15 30 10 Capacity Btu h Total Length Max Main Pipe Length A B Total Branch Pipe Length Max Branch Pipe Length Max Elevation h1 In In Elevation h2 CAUTION Capacity is based on standard length and maximum allowance length is on...

Page 8: ... of the wiring to power outlets is through the walls typically Drilling the hole through the wall for piping connections must be done safely Chassis Hook Installation Plate Type A Installation plate Left rear piping Right rear piping Ø70mm Ø70mm D B A C Drill the piping hole with a ø70mm hole core drill Drill the piping hole at either the right or the left with the hole slightly slanted to the out...

Page 9: ...ction of pipe tube 2 Put the end of the copper tube pipe in a downward direction as you remove burrs in order to avoid dropping burrs into the tubing Putting nut on Remove flare nuts attached to indoor and outdoor unit then put them on pipe tube having completed burr removal not possible to put them on after flaring work Flaring work 1 Firmly hold copper pipe in a die in the dimension shown in the...

Page 10: ...om the outdoor unit through the piping hole Do not connect the cable to the indoor unit Make a small loop with the cable for easy connection later 3 Tape the tubing drain hose and the connecting cable Be sure that the drain hose is located at the lowest side of the bundle Locating at the uper side can cause drain pan to overflow inside the unit If the drain hose is routed inside the room insulate ...

Page 11: ...install the drain pipe Wrap the insulation material around the connecting portion 1 Overlap the connection pipe insulation material and the indoor unit pipe insulation material Bind them together with vinyl tape so that there may be no gap 2 Wrap the area which accommodates the rear piping housing section with vinyl tape 3 Bundle the piping and drain hose together by wrapping them with vinyl tape ...

Page 12: ...acer etc between the indoor unit and the installation plate and separate the bottom of the indoor unit from the wall Connecting the piping to the indoor unit and the drain hose to drain pipe 1 Align the center of the pipes and sufficiently tighten the flare nut by hand 2 Tighten the flare nut with a wrench 3 When extending the drain hose at the indoor unit install the drain pipe For left rear pipi...

Page 13: ...ch they fit into the rear piping housing section Reroute the pipings and the drain hose across the back of the chassis Indoor unit installation 1 Remove the spacer 2 Ensure that the hooks are properly seated on the installation plate by moving it left and right 3 Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots clicking sound P...

Page 14: ...tightening follows the arrow on the wrench Gas side piping Liquid side piping Torque wrench B UNIT A UNIT Outdoor unit Connection of piping Outdoor Outside diameter Torque mm inch kg m Ø6 35 1 4 1 8 Ø9 52 3 8 4 2 Ø12 7 1 2 5 5 Ø15 88 5 8 6 6 Ø19 05 3 4 6 6 Installation Information For left piping Follow the instruction below Good case Press on the upper side of clamp and unfold the tubing to downw...

Page 15: ...CAUTION The circuit diagram is not subject to change without notice Be sure to connect wires according to the wiring diagram Connect the wires firmly so that not to be pulled out easily Connect the wires according to color codes by referring the wiring diagram CAUTION Provide a circuit breaker between power source and the unit as shown below CAUTION The power cord connected to the outdoor unit sho...

Page 16: ...ly for the air conditioner As for the method of wiring be guided by the circuit diagram posted on the inside of control cover 2 Firmly tighten the terminal screws to prevent them loosening After tightening pull the wires lightly to confirm that they do not move If they are loose the unit the unit will not operate normally or it can cause burn out of the wires 3 Specification of power source 4 Conf...

Page 17: ...a glass of water on the evaporator 2 Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit Drain piping 1 The drain hose should point downward for easy drain flow 2 Do not make drain piping Downward slope Do not raise Accumulated drain water Tip of drain hose dipped in water Air Waving Water leakage Water leakage Ditch Less than 50mm gap W...

Page 18: ...e the Outdoor unit is installed above the Indoor unit perform the following 1 Tape the piping and connecting cable from down to up 2 Secure the taped piping along the exterior wall Form a trap to prevent water entering the room 3 Fix the piping onto the wall by saddle or equivalent 1 Open the top cover of outdoor unit 2 Select one of the two selectable modes as follows 3 Move the Slide swithc to L...

Page 19: ...auges and dry nitrogen gas cylinder to this service port with charge hoses CAUTION Be sure to use a manifold valve for leakage test If it is not available use a stop valve for this purpose The Hi knob of the manifold valve must always be kept close 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 te...

Page 20: ...g the job 1 With a service valve wrench turn the valve stem of liquid side valve counter clockwise to fully open the valve 2 Turn the valve stem of gas side valve counter clockwise to fully open the valve 3 Loosen the charge hose connected to the gas side service port slightly to release the pressure then remove the hose 4 Replace the flare nut and its bonnet on the gas side service port and faste...

Page 21: ...ng Hold the two ends of the front panel at the bottom and move it upward 2 Front panel closing Move the link upward and close the front panel Connecting the Cables How to use the front panel Front panel 3 Front panel removing Raise the link up to hook hanger and remove front panel forward ...

Page 22: ...check the system refrigerant charge 1 Measure the pressure of the gas side service valve 2 Measure the temperature of the intake and discharge of air 3 Ensure the difference between the intake temperature and the discharge is more than 8 C 4 For reference the gas side pressure of optimum condition is as below Cooling NOTICE Discharge temperature Discharge air Intake temperature Bolt Tubing connect...

Page 23: ...the outdoor unit will reduce the capacity of each indoor unit below the rated capacity during simultaneous operation Therefore if circumstances allows combine indoor units within the capacity of the outdoor unit NOTICE Type Standard Type SQ SR ST SZ SU SP1 SE TC TE TF BH BT BT1 BP VE VB Artcool Deluxe Type Ar Mirror Type tcool Type Ceiling Mounted Cassete Type 1Way Ceiling Mounted Cassete Type 4Wa...

Page 24: ...e obtained depending on operating condition 18k 2 rooms 24k 3 rooms 7 7 1 UNIT 9 9 12 12 7 7 14 7 9 16 2 UNIT 9 9 18 7 12 19 9 12 21 12 12 24 Combination Unit A Unit B Total 7 7 1 UNIT 9 9 12 12 18 18 7 7 14 7 9 16 9 9 18 7 12 19 2 UNIT 9 12 21 12 12 24 7 18 25 9 18 27 12 18 30 7 7 7 21 7 7 9 23 7 9 9 25 7 7 12 26 3 UNIT 9 9 9 27 7 9 12 28 9 9 12 30 7 12 12 31 9 12 12 33 Combination Unit A Unit B ...

Page 25: ...30 18 18 36 7 7 7 21 7 7 9 23 7 9 9 25 7 7 12 26 9 9 9 27 7 9 12 28 9 9 12 30 3 UNIT 7 12 12 31 7 7 18 32 9 12 12 33 7 9 18 34 12 12 12 36 9 9 18 36 7 12 18 37 9 12 18 39 7 7 7 7 28 7 7 7 9 30 7 7 9 9 32 7 7 7 12 33 7 9 9 9 34 4 UNIT 7 7 9 12 35 9 9 9 9 36 7 9 9 12 37 7 7 12 12 38 9 9 9 12 39 7 7 7 18 39 Combination Unit A Unit B Unit C Unit D Total 30k 4 rooms ...

Page 26: ...9 23 7 9 9 25 7 7 12 26 9 9 9 27 7 9 12 28 9 9 12 30 7 12 12 31 7 7 18 32 9 12 12 33 7 9 18 34 12 12 12 36 9 9 18 36 3 UNIT 7 12 18 37 7 7 24 38 9 12 18 39 7 9 24 40 12 12 18 42 9 9 24 42 7 18 18 43 7 12 24 43 9 18 18 45 9 12 24 45 12 18 18 48 12 12 24 48 7 18 24 49 9 18 24 51 7 7 7 7 28 7 7 7 9 30 7 7 9 9 32 4 UNIT 7 7 7 12 33 7 9 9 9 34 7 7 9 12 35 9 9 9 9 36 Combination Unit A Unit B Unit C Uni...

Page 27: ...7 9 12 24 52 7 7 7 7 7 35 7 7 7 7 9 37 7 7 7 9 9 39 7 7 7 7 12 40 7 7 9 9 9 41 7 7 7 9 12 42 7 9 9 9 9 43 7 7 9 9 12 44 9 9 9 9 9 45 7 9 9 9 12 46 9 9 9 9 12 48 5 UNIT 7 7 7 12 12 45 7 7 7 7 18 46 7 7 9 12 12 47 7 7 7 9 18 48 7 9 9 12 12 49 7 7 12 12 12 50 7 7 9 9 18 50 9 9 9 12 12 51 7 7 7 12 18 51 7 9 12 12 12 52 7 9 9 9 18 52 7 7 7 7 24 52 7 7 7 7 7 7 42 7 7 7 7 7 9 44 7 7 7 7 9 9 46 7 7 7 7 7 ...

Page 28: ...28 Multi Type Air Conditioner Memo ...

Page 29: ......

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