Nortek GKU18USV4DH, Инструкция по установке и руководство пользователя

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DC Inverter U-match Series Cassette Type Unit
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(2). Do not bend the pipes in an angle more than
90°.
(3). When pipes are repeatedly bent or
stretched, the material will weaken making it
more likely to break. Do not bend or stretch
the pipes more than three times.
(4). For best results, cut insulation before
bending, as shown in fig. 4.12. Bend pipe as
needed and secure insulation with tape.
Fig. 4.11
ķ
. To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature of
150mm (5-7/8inch) or more.
ĸ
. If the pipe is bent repeatedly at the same place, it will break.
4.3.3 Connecting the Pipe at the Indoor Unit Side
Detach the caps and plugs from the pipes.
ķ
. Be sure to attach the pipe on the indoor unit correctly. Center the flare nut on the fitting before
tightening. Do not force the nut to turn or the threads will be damaged and the system will leak.
ĸ
. Do not remove the flare nut until the connection pipe is to be connected so as to prevent dust
and impurities from coming into the pipe system.
When connecting the pipe to the unit or removing it from the unit, please use a
torque wrench (Fig. 4.12).
When connecting, smear both inside and outside of the flare nut with lubricant,
screw it hand tight and then tighten it with the torque wrench.
Refer to Table 4.5 to check if the wrench has been tightened properly (too tight
would mangle the nut and lead to leakage).
Examine the connection pipe to see if it leaks, then apply heat insulation sheath,
as shown in the Fig. 4.12.
Use the medium-sized sponge to insulate the coupler of the gas pipe.