Safety Precautions - Mitsubishi Electric Mr.SLIM PUZ-A NHA6 Série Manuel D'installation

1. Safety precautions

1.3. Before electric work
Caution:
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connections are loosened, the cables can snap or break and overheating or
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Caution:
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tion. Starting operation just after turning on the power switch can severely
damage the internal parts. Keep the main power switch turned on during the
operation season.
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parts are correctly installed. Rotating, hot, or high voltage parts can cause
injuries.
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Caution:
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to connect the refrigerant pipes. Make sure the insides of the pipes are clean
and do not contain any harmful contaminants such as sulfuric compounds,
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ant.
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- Do not use thin pipes. (Refer to page 5)
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the pipes sealed until just before brazing. (Leave elbow joints, etc. in their
packaging.) If dust, debris, or moisture enters the refrigerant lines, oil dete-
rioration or compressor breakdown may result.
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oil, oil deterioration may result.
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pipes, lighting rods, or telephone grounding lines. If the unit is not properly
grounded, electric shock may result.
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refrigerant. If you touch the pipes, burns or frostbite may result.
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ing off the main power switch. Otherwise, water leakage or breakdown may
result.
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used, the chlorine will cause the oil to deteriorate.
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nearest dealer for any questions.
Gauge manifold
Charge hose
Gas leak detector
Torque wrench
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erant lines, refrigeration oil deterioration may result.
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Check that the difference between the heights of the indoor and outdoor
units, the length of refrigerant pipe, and the number of bends in the pipe are
within the limits shown below.
Models
PUZ-A18
PUZ-A24, A30, A36, A42 Max. 50 m, 165 ft
PUY-A12, A18
PUY-A24, A30, A36, A42 Max. 69 m, 225 ft
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door, is positioned higher.
D Indoor unit
E Outdoor unit
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bors.
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indoor unit.
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late.
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snow fall is anticipated, special precautions such as raising the installation location
or installing a hood on the air intake must be taken to prevent the snow from block-
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malfunction may result.
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Tools (for R410A)
Flare tool
Size adjustment gauge
Vacuum pump adapter
Electronic refrigerant charging scale
APipe length BHeight
( (one way) y) difference
Max. 30 m, 100 ft Max. 30 m,100 ft
Max. 30 m,100 ft
Max. 50 m, 165 ft Max. 30 m,100 ft
Max. 30 m,100 ft
CNumber of
bends (one way) ( y)
Max. 15
Max. 15
Max. 15
Max. 15
3