P00792Q-rev.2
17
(6) Wherever buried piping exists on site, make sure there is a service doorway to provide adequate access
to inspect piping sockets and elbows, and for interconnecting parts.
(7) Piping must be reinforced to withstand earthquakes so as not to be damaged by an external force.
(8) Do not tightly secure refrigerant piping to accommodate expansion and contraction.
(9) Prevent the pipes from contacting weak portions such as wall, ceiling, etc. (Otherwise, abnormal sound
may be heard due to vibration of the piping.)
(10) Test for air-tight integrity. The air-tight procedures should be performed in accordance with the
"Installation and Maintenance Manual" for the outdoor unit.
(11) If temperature and humidity inside the ceiling exceed 80.6°F (27°C)/RH80%, condensation occurs
on the surface of the accessory insulation. Wrap additional insulation (approximately 3/16~3/8 inch
(5~10mm) thickness) around the accessory insulation of the refrigerant pipe as a preventive measure.
(12) Insulate each are connection without gap with accessory insulations to prevent condensation. Then
insulate each refrigerant pipe as well.
Fasten with cable clamps
at 3 locations along the pipe
(Accessory).
Fix the vinyl tape position at the vertical part
Securely fasten cable clamps and the vinyl tape
in order to prevent the accumulation of moisture.
Unit
Side
Check for any clearance between
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