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1. Safety precautions
1.5. Using R410A refrigerant air conditioners
Caution:
• Use C1220 copper phosphorus, for copper and copper alloy seamless
pipes, 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, oxidants, debris, or dust. Use pipes with the specified thick-
ness. (Refer to 4.1.) Note the following if reusing existing pipes that carried
R22 refrigerant.
- Replace the existing flare nuts and flare the flared sections again.
- Do not use thin pipes. (Refer to 4.1.)
• Store the pipes to be used during installation indoors and keep both ends
of the pipes sealed until just before brazing. (Leave elbow joints, etc. in
their packaging.) If dust, debris, or moisture enters the refrigerant lines, oil
deterioration or compressor breakdown may result.
• Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration
oil applied to the flared sections. If mineral oil is mixed in the refrigeration
oil, oil deterioration may result.
en
1
2
3
2. Installation location
Suspension ropes
(2 pieces × 5 m or longer)
Protection pads
(2 each for front
and back)
Wire grilles
Protection pads
(2 each for front
and back)
3
Fig. 1-1
(mm)
Fig. 2-1
Suspension area
(2 each for front and back)
Fig. 2-2
• Do not use refrigerant other than R410A refrigerant. If another refrigerant is
used, the chlorine will cause the oil to deteriorate.
• Use the following tools specifically designed for use with R410A refriger-
ant. The following tools are necessary to use R410A refrigerant. Contact
your nearest dealer for any questions.
Tools (for R410A)
Gauge manifold
Charge hose
Gas leak detector
Torque wrench
• Be sure to use the correct tools. If dust, debris, or moisture enters the
refrigerant lines, refrigeration oil deterioration may result.
• Do not use a charging cylinder. If a charging cylinder is used, the composition
of the refrigerant will change and the efficiency will be lowered.
1.6. Accessories of outdoor unit (Fig. 1-1)
ø12.7 and ø25.4 piping is included with the P300 series. Use it in connection with the
on-site piping. Refer to 4.5.2.
1 Joint pipe (liquid) ......... ×1
2 Joint pipe (gas) ........... ×1
3 Joint pipe-L (gas) ........ ×1
2.1. Choosing the outdoor unit installation location
• Avoid locations exposed to direct sunlight or other sources of heat.
• Select a location from which noise emitted by the unit will not inconvenience
neighbors.
• Select a location permitting easy wiring and pipe access to the power source and
indoor unit.
• Avoid locations where combustible gases may leak, be produced, flow, or accumulate.
• Note that water may drain from the unit during operation.
• Select a level location that can bear the weight and vibration of the unit.
• Avoid locations where the unit can be covered by snow. In areas where heavy
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
blocking the air intake or blowing directly against it. This can reduce the airflow and
a malfunction may result.
• Avoid locations exposed to oil, steam, or sulfuric gas.
• Transport the unit using rope or a cart, etc. Transporting the unit by holding the
service panel handles may result in injury. If the unit is carried from the bottom,
hands or fingers may be pinched.
2.2. Outline dimensions (Outdoor unit) (Fig. 2-1)
2.3. Transporting the unit
• Transport the unit using rope or a cart, etc. Transporting the unit by holding the
service panel handles may result in injury.
2.3.1. Hanging the unit (Fig. 2-2)
• Do not subject the unit to shocks or impacts.
• When delivering the unit by suspending it, use two straps that are each 5 m or more
in length.
• Place protection pads (boards, etc.) on parts that come into direct contact with the
straps, such as the corners of the unit, etc., to prevent scratches.
Warning:
• W hen delivering the unit, be sure to suspend it from specified positions on
the unit.
A dditionally, be sure to secure it so that it does not shift from side to side,
and support it at four points.
• I f the unit is carried or suspended with support at only three points, the unit
will be unstable and may tip over or fall, resulting in injury.
Flare tool
Size adjustment gauge
Vacuum pump adapter
Electronic refrigerant charging scale
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