Kinghome KM09HFDI, Instruction Manual

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Free Match for North America
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carefully the joint to see if it leaks or not. If this unit is installed in the newly built house, it is
suggested to take this test prior to the ceiling decoration.
3.13 Piping
(1). Let the flare end of the copper pipe point at the screw and then tighten the screw by hand.
(2). After that, tighten the screw by the torque wrench until it clatters (as shown in Fig.18).
Pipe Pipe Flare Nut
Spanner
Fig.18
Table 6 Moments of Torque for Tightening Screws
Diameter of Pipe(mm) Moment of Torque (N·m)
φ6.35 15-30
φ9.52 35-40
φ12 45-50
φ15.9 60-65
(3). The bending degree of the pipe can not be too small; otherwise it will crack. And please use
a pipe tube bender to bend the pipe.
(4). Wrap the exposed refrigerant pipe and the joints by sponge and then tighten them with the
plastic tape.
CAUTION!
① .
During the connection of the indoor unit and the refrigerant pipe, never pull any joints of the
indoor unit by force; otherwise the capillary pipe or other pipe may crack, which then would result in
leakage.
② .
The refrigerant pipe should be supported by brackets, that is, don’t let the unit withstand the
weight of it.
If the specification of the outdoor unit pipe joint does not conform to that of the indoor unit, then
the joint specification of the outlet pipe of the indoor unit takes precedence. A reducing nipple shall
be installed at the joint of the outdoor unit so as to make the joint of the outdoor unit compatible
with that of the indoor unit.
3.14 Insulation for the Refrigerant Pipe
(1). The refrigerant pipe should be insulated by the insulating material and plastic tape in order
to prevent condensation and water leakage.
(2). The joints of the indoor unit should be wrapped with the insulating material and no gap is