Mitsubishi Electric MFZ-KA50VA / SUZ-KA50VA [2/24] Caution

2. INSTALLATION DIAGRAM & ACCESSORIES

1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR

SAFETY

■ Do not install it by yourself (customer).

Incomplete installation could cause injury due to

fire, electric shock, the unit falling or leakage of

water. Consult the dealer from whom you pur-

chased the unit or special installer.

■ Install the unit securely in a place which can

bear the weight of the unit.

When installed in an insufficient strong place, the

unit could fall causing injury.

■ Use the specified wires to connect the indoor

and outdoor units securely and attach the

wires firmly to the terminal block connecting

sections so the stress of the wires is not ap-

plied to the sections.

Incomplete connecting and fixing could cause a fire.

■ Do not use intermediate connection of the

power cord or the extension cord and do not

connect many devices to one AC outlet.

It could cause a fire or an electric shock due to

defective contact, defective insulation, exceeding

the permissible current, etc.

■ Check that the refrigerant gas does not leak

after installation has completed.

If refrigerant gas leaks indoors, and comes into

contact with the fire of a fan heater, space heater,

stove, etc., harmful substances will be generated.

■ Perform the installation securely referring to

the installation manual.

Incomplete installation could cause a personal

injury due to fire, electric shock, the unit falling or

leakage of water.

Caution

■ Earth the unit.

Do not connect the earth to a gas pipe, water

pipe, lightning rod or telephone earth. Defective

earthing could cause an electric shock.

■ Do not install the unit in a place where an in-

flammable gas leaks.

If gas leak and accumulate in the area surround-

ing the unit, it could cause an explosion.

■ Install an earth leakage breaker depending on

the installation place (Where it is humid).

If an earth leakage breaker is not installed, it could

cause an electric shock.

■ Perform the drainage/piping work securely

according to the installation manual.

If there is a defect in the drainage/piping work,

water could drop from the unit and household

goods could be wet and damaged.

■ Fasten a flare nut with a torque wrench as

specified in this manual.

When fastened too tight, a flare nut may broken

after a long period and cause a leakage of re-

frigerant.

•

Please provide an exclusive circuit for the air conditioner and do not connect other electrical appliances to it.

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

the air conditioner.

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

• The indications and meanings are as follows.

Warning: Could lead to death, serious injury, etc.

Caution: Could lead to serious injury in particular environments when operated incorrectly.

• After reading this manual, be sure to keep it together with the instruction manual in a handy place on

the customer’s site.

Warning

■ Perform electrical work according to the in-

stallation manual and be sure to use an ex-

clusive circuit.

If the capacity of the power circuit is insufficient

or there is incomplete electrical work, it could

result in a fire or an electric shock.

■ Attach the electrical part cover to the indoor

unit and the service panel to the outdoor unit

securely.

If the electrical part cover in the indoor unit and/

or the service panel in the outdoor unit are not

attached securely, it could result in a fire or an

electric shock due to dust, water, etc.

■ Be sure to use the part provided or specified

parts for the installation work.

The use of defective parts could cause an injury

or leakage of water due to a fire, an electric shock,

the unit falling, etc.

■ Be sure to cut off the main power in case of

setting up the indoor electronic control P.C.

board or wiring works.

It could cause an electric shock.

■ The appliance shall be installed in accordance

with national wiring regulations.

■ When installing or relocating the unit, make

sure that no substance other than the speci-

fied refrigerant (R410A) enters the refrigerant

circuit.

Any presence of foreign substance such as air

can cause abnormal pressure rise or an explo-

sion.

When the piping is to be attached to a

wall containing metals (tin plated) or

metal netting, use a chemically treated

wooden piece 20 mm or thicker between

the wall and the piping or wrap 7 to 8

turns of insulation vinyl tape around the

piping.

Lock the catch.

Piping can be directed towards rear,

right, downward, left or left-rear

directions.

Downward

Left

Separate the 2 connecting pipes and ap-

ply insulation individually.

8 mm thickness thermal insula-

tion plastic

150 mm or below

from the floor

Be careful the

drain hose is not

raised.

Left-Downward

Left-rear

SUZ-KA25/35 VA (H)

Rear

100 mm or more

01HM05A309_RAC-IM_en.pm6 4/6/05, 1:38 PM2

Mitsubishi Electric MFZ-KA50VA / SUZ-KA50VA [2/24] Caution

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