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8.3 Outdoor Unit
8.3.1 Install the Outdoor Unit
•
After selecting the best location, start installation according to indoor/outdoor unit installation diagram.
1
Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm).
2
When installing at roof, please consider strong wind and earthquake.
Please fasten the installation stand firmly with bolt or nails.
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86.7
8.3.2 Connecting the Piping
8.3.2.1 Connecting the piping to indoor unit
Please make flare after inserting flare nut (locate at joint portion, of tube assembly) onto the copper pipe. (In case of
using long piping)
Connect the piping
•
Align the center of piping and sufficiently tighten the flare nut with fingers.
•
Further tighten the flare nut with torque wrench in specified torque as stated in the table.
8.3.2.2 Connecting the piping to outdoor unit
Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the
flare nut (locate at valve) onto the copper pipe. Align center of piping to valves and then tighten with torque wrench to
the specified torque as stated in the table.
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8.3.3 Evacuation of the equipment
When installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following
procedures.
1
Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way
valve.
Be sure to connect the end of the charging hose with the push pin to the service port.
2
Connect the center hose of the charging set to a vacuum pump.
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Do not over tighten. Over tightening causes
gas leakage.
Piping size
1/2"
1/4"
17
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Torque
55N•m (5.5kgf.m)
18N•m (1.8kgf.m)
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