DC Inverter U-match Series Cassette Type Unit
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2.2.3 Connection Pipe Installation
2.2.3.1 Installation Notice and Requirement on Connection Pipe
Installation of Ordinary Nut and Tamperproof box.
Unfold the connecting pipe and bend the connecting pipe according to the
required length. Open the nut cover on the indoor unit’s pipe and align the conical
mouth of the connecting pipe with the center of the indoor unit’s pipe. Tighten the
nut by hand and then tighten it with a torque wrench. The connecting pipe of indoor
unit must be installed with the tamperproof box that is included in delivery. Once
installed, the tamperproof box cannot be removed. If you need to break the
connection between indoor and outdoor units, cut the connector. Replace with a
new one and weld again.
NOTES!
(1) The air conditioner must be installed in a room that is larger than the minimum
room area. And it is not allowed to use in a room that has running fire.
(2) Before break the connection pipes between indoor and outdoor units,
eliminate the refrigerant first and make sure there is no fire source or potential
fire source in the maintenance area. And make sure the area is well-ventilated.
(3) The tamperproof box should not be overlapped during installation and must be
completely covered with the accompanied insulated pipe before wrapping.
Installation method: Connect the connection pipes first to the indoor unit and
then to the outdoor unit. When bending a connection pipe, be careful not to damage
the pipe. Do not over-tighten the screw nut, otherwise leakage will occur. Besides,
the outside of connection pipe should be added with a layer of insulating cotton to
protect it from mechanical damage during installation, maintenance and
transportation.
