Справочник Пользователя для Mitsubishi Electronics MXZ-3B24NA

En-

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 Incomplete installation could cause fire or electric shock, injury due to the unit

falling, or leakage of water. Consult the dealer from whom you purchased the

unit or a qualified installer.

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 Incomplete installation could cause fire or electric shock, injury due to the unit

falling, or leakage of water.

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 If the installation location cannot bear the weight of the unit, the unit could fall

causing injury.

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 If the capacity of the power circuit is insufficient or there is incomplete electri-

cal work, it could result in a fire or an electric shock.

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 Damaged wires could cause fire.
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 Failure to do so could cause electric shock.
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 Incomplete connecting and securing could cause fire.
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 If gas leaks and accumulates in the area around the unit, it could cause an

explosion.

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 It could cause a fire or an electric shock due to defective contact, defective

insulation, exceeding the permissible current, etc.

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 The use of defective parts could cause an injury or leakage of water due to a

fire, an electric shock, the unit falling, etc.

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 If there is dust, clogging, or loose parts on the power supply plug or the outlet,

it could cause electric shock or fire. If loose parts are found on the power sup-

ply plug, replace it.

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 If the electrical cover of the indoor unit and/or the service panel of the out-

door  unit  are  not  attached  securely,  it  could  result  in  a  fire  or  an  electric

shock due to dust, water, etc.

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 Any presence of foreign substance such as air can cause abnormal pres-

sure rise or an explosion.

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 If refrigerant comes in contact with a fire, harmful gas could be generated. Re-

frigerant leakage may cause suffocation. Ventilate the room.

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 If refrigerant gas leaks indoors, and comes into contact with the flame of a

fan heater, space heater, stove, etc., harmful substances will be generated.

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 The pressure of R40A is .6 times more than R22. Not using appropriate

tools or materials and incomplete installation could cause the pipes to burst

or injury.

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 If  the  refrigerant  pipes  are  disconnected  while  the  compressor  is  running

and the stop valve is open, air could be drawn in and the pressure in the re-

frigeration cycle could become abnormally high. This could cause the pipes

to burst or injury.

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 If the compressor is started before the refrigerant pipes are connected and

when the stop valve is open, air could be drawn in and the pressure in the

refrigeration  cycle  could  become  abnormally  high.  This  could  cause  the

pipes to burst or injury.

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 If fastened too tight, a flare nut may break after a long period and cause re-

frigerant leakage.

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 Do not connect the ground to a gas pipe, water pipe, lightning rod or tel-

ephone ground. Defective grounding could cause electric shock.

•  Be sure to read “THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY” before installing the air conditioner.

•  Be sure to observe the warnings and cautions specified here as they include important items related to safety.

•  After reading this manual, be sure to keep it together with the OPERATING INSTRUCTIONS for future reference.

(Could lead to serious injury in particular environments when operated incorrectly.)

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 If the Ground Fault Interrupt (GFI) circuit breaker is not installed, an electric

shock could occur.

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 If there is defect in the drainage/piping work, water could drop from the unit,

soaking and damaging household goods.

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 This could cause injury.
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 If small animals enter and touch the electric parts inside the unit, it could

cause a malfunction, smoke emission, or fire. Also, advise user to keep the

area around the unit clean.

(Could lead to death, serious injury, etc.)

Phillips screwdriver

Level

Scale

Utility knife or scissors

Torque wrench

Wrench (or spanner)

4 mm (5/32 in.) hexagonal

wrench

Flare tool for R40A

Gauge manifold for R40A

Vacuum pump for R410A

Charge hose for R40A

Pipe cutter with reamer

. BEFORE INSTALLATION ............................................................

2. OUTDOOR UNIT INSTALLATION ...............................................4

3. FLARING WORK AND PIPE CONNECTION ...............................5

4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN ......... 5

5. RELOCATION AND MAINTENANCE ..........................................7

Model

Power supply

Pipe length and height difference *1, *2, *3, *4, *5, *6

Rated Voltage

Frequency Max. pipe length per indoor

unit / for multi-system

Max. height difference *7

Max. no. of bends per in-

door unit / for multi system

Refrigerant adjustment A

*8

MXZ-3B24NA

MXZ-3B30NA

MXZ-4B36NA

208 / 230 V

60 Hz

25 m (82 ft) / 70 m (230 ft)

15 m (49 ft)

25 / 70

20 g/m (1.08 oz each 5 ft)

*1 Never  use  pipes  with  thickness  less  than  specified.  The  pressure  resist-

ance will be insufficient.

*2 Use a copper pipe or a copper-alloy seamless pipe.

*3 Be careful not to crush or bend the pipe during pipe bending.

*4 Refrigerant pipe bending radius must be 100 mm (4 in.) or more.

*5 Insulation material : Heat resisting foam plastic 0.045 specific gravity

*6 Be sure to use the insulation of specified thickness. Excessive thickness

may cause incorrect installation of the indoor unit and insufficient thickness

may cause dew drippage.

*7 If the outdoor unit is installed higher than the indoor unit, max. height differ-

ence is reduced to 10 m (33 ft).

*8 If pipe length exceeds 40 m (131 ft), additional refrigerant (R410A) charge

is  required.  (No  additional  charge  is  required  for  pipe  length  less  than

40 m (131 ft).)

 Additional refrigerant (m) = A × (pipe length (m)

–

40)

 Additional refrigerant (ft)  = A × (pipe length (ft)

–

131)

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JG79A417H01_en.indd   1

10/12/2010   9:19:43 AM