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3.9.2. Knock out holes for wiring

CAUTION

• Be careful not to deform or scratch the panel while opening the knock out holes.

• When cables are routed from the unit, a protection sleeve for the conduits can be

inserted at the knock out hole.

• If you do not use a wire conduit, be sure to protect the wires to prevent the edge of

the knock out hole from cutting the wires.

• It is recommended to apply anti-rust paint to the edge of the knock out hole.

• Knock out holes are provided 2 each in the same size in front, lateral and rear sides.



Wiring procedure

Cable with

conduit

(for connection

cable)

Cable with conduit

(for power cable)

Front connection

Lateral connection

Rear connection

Lock nut

Fix the conduit with the supporters as shown below.

Supporter

Conduit (Power supply cable)

Outdoor unit

30 in

(756 mm)

or less

54 in

(1,360 mm)

or less

54 in

(1,360 mm)

or less

54 in

(1,360 mm)

or less

3.9.3. Wiring method

CAUTION

When connecting the power supply cable, make sure that the phase of the power

supply matches with the phase of the terminal board. If the phases do not match, the

compressor will rotate in reverse and will not be able to compress.



Connection diagrams

Power supply

Outdoor unit

side terminal

Indoor unit
side terminal

Power line

Ground

(Earth)

Ground

(Earth)



Cable preparation

• Keep the ground (earth) wire longer than the other wires.

Ground (Earth)

wire

1-9/16 in (40 mm)

Power supply cable or

Connection cable

2-3/8 in (60 mm)



Wiring procedure

(1) • Remove the tapping screws. (2 places)

• Remove the service cover by pushing downwards.

Service cover

Screws

Direction of the

service cover

removal

(2)

Connect the power supply cable and the connection cable to terminal.

(3) Fasten the power supply cable and connection cable with cable tie.

Terminal blocks

Use the specified

wire type and

connect it securely.

Firmly secure cable tie

so wire terminations will not receive

external stress.

Connection cable

Power supply cable

Indoor

unit

Ground

(Earth)

L1 L2

(4) Secure the cables using the cable tie attached to the base of the valves.

Cable tie

(5) Put the service cover back after completion of the work.

Replace the tapping screws. (2 places)

Service cover

Direction of the

service cover

attachment

9379113069-02_IM.indb 10

6/11/2021 10:26:46 AM

Содержание 24LMAS1

Страница 1: ... a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin aluminum fins on the air conditioner can cut your fingers When Installing In a Ceiling or Wall Make sure the ceiling 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 ins...

Страница 2: ...her than as liquid or gas When Servicing Turn the power OFF at the main circuit breaker panel before opening the unit to check or repair electrical parts and wiring Keep your fingers and clothing away from any moving parts Clean up the site after you finish remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced After installation explain correct o...

Страница 3: ...re and dust Especially pay attention when passing the pipes through a hole or connecting the end of a pipe to the outdoor unit Location Working period Protection method Outdoor 1 month or more Pinch pipes Less than 1 month Pinch or tape pipes Indoor Pinch or tape pipes 2 4 Power source WARNING Always use a special branch circuit and install a special receptacle to supply power to the room air cond...

Страница 4: ...e risk of the leakage of flammable gas in the vicinity Area where small animals may live It may cause failure smoke or fire if small animals enter and touch internal electrical parts Area where animals may urinate on the unit or ammonia may be generated Do not tilt the outdoor unit more than 3 degrees However do not install the unit with it tilted towards the side containing the compressor Install...

Страница 5: ... 500 or more 10 250 or more 3 Obstacles at front and rear 20 500 or more 60 1 500 or more 10 250 or more When an obstruction is present also in the upward area Unit in mm 1 Obstacles at rear and above Up to 3 units can be installed side by side When 4 units or more are arranged in a line provide the space as shown below 60 1 500 or more 20 500 or more 10 250 or more Max 11 300 60 1 500 or more 3 1...

Страница 6: ...cing is recommended when blowing and drifting snow is common to the region 3 4 Drain installation CAUTION Perform drain work in accordance with this Manual and ensure that the drain water is properly drained If the drain work is not carried out correctly water may drip down from the unit wetting the furniture When the outdoor temperature is 32 F 0 C or less do not use the accessory drain pipe If t...

Страница 7: ...s Bend the pipe with a radius of curvature of 3 15 16 in 100 mm to 5 7 8 in 150 mm If the pipe is bent repeatedly at the same place it will break If pipes are shaped by hand be careful not to collapse them Do not bend the pipes at an angle of more than 90 When pipes are repeatedly bent or stretched the material will harden making it difficult to bend or stretch them anymore Do not bend or stretch ...

Страница 8: ...he valves Use a hexagon wrench size 4 mm Opening 1 Insert the hexagon wrench into the valve shaft and turn it counterclockwise 2 Stop turning when the valve shaft can no longer be turned Open position Closing 1 Insert the hexagon wrench into the valve shaft and turn it clockwise 2 Stop turning when the valve shaft can no longer be turned Closed position Opening direction Hexagon wrench Seal blank ...

Страница 9: ... amperage at which the breaker cuts out may decrease When using an earth leakage breaker that has been designed solely for ground fault protection be sure to install a fuse equipped switch or circuit breaker This system uses an inverter which means that it must be used an earth leakage breaker that can handle harmonics in order to prevent malfunctioning of the earth leakage breaker itself Do not u...

Страница 10: ... supply matches with the phase of the terminal board If the phases do not match the compressor will rotate in reverse and will not be able to compress Connection diagrams L1 L2 Power supply Outdoor unit side terminal Indoor unit side terminal Power line Ground Earth Ground Earth Cable preparation Keep the ground earth wire longer than the other wires Ground Earth wire 1 9 16 in 40 mm Power supply ...

Страница 11: ...s will start operating Room temperature control will not activate during test operation continuous operation If a knocking sound can be heard in the liquid compression of the compressor stop the unit immediately and then energize the crank case heater for a sufficient length of time before restarting the operation 4 2 1 Setting method on outdoor unit board 1 Turn on the power of the outdoor unit a...

Страница 12: ...Y UNIT 6 1 Display unit position WARNING Never touch electrical components such as the terminal blocks except the button on the display board It may cause a serious accident such as electric shock CAUTION Once refrigerant charging is completed be sure to open the valve prior to performing the local settings Otherwise the compressor may fail Discharge any static electricity from your body before to...

Страница 13: ...ting performance may decrease Depending on the operating condition the noise level may not decrease even if the Low noise mode is on Level 2 Blink 9 times 2 Peak cut mode setting Level 1 Blink 9 times The capacity limit can be selected when operating with the Peak cut mode The operation selection can be done by external input connector PA580 The lower the level the more the effect of energy saving...

Страница 14: ... beginning of operation procedure after returning to Operation status displays normal operation by pressing the EXIT button once 8 EXTERNAL INPUT AND OUTPUT 8 1 External input 8 1 1 Wiring of connector On Off of the Low noise mode and Peak cut mode functions can be enabled with an external field device When installing connection cable specified part optional parts must be used Refer to section 7 2...

Страница 15: ...ical components such as the terminal blocks except the button on the display board It may cause a serious accident such as electric shock During the pump down operation make sure that the compressor is turned off before you remove the refrigerant piping Do not remove the connection pipe while the compressor is in operation with 2 way or 3 way valve open This may cause abnormal pressure in the refr...

Страница 16: ...L5 L6 Sign Lights off Lights on 3 Press PUMP DOWN button S130 for 3 seconds or more after 3 minutes after power on POWER MODE ERROR PUMP DOWN LOW NOISE PEAK CUT L1 L2 L3 L4 L5 L6 Sign Lights off Lights on LED display lights on as shown in the above table and the fans and the compressor start operating If the PUMP DOWN button S130 is pressed while the compressor is operating the compressor will sto...

Страница 17: ...Outdoor temp sensor error Outdoor temp sensor error Blink 2 times Blink 7 times Blink 4 times Heat sink temp sensor error Heat sink temp sensor error Blink 2 times Blink 7 times Blink 7 times Current sensor error Current sensor 1 error stoppage permanently Blink 2 times Blink 8 times Blink 4 times Pressure sensor error High pressure switch 1 error Blink 2 times Blink 8 times Blink 6 times Pressure...

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