Nortek GKU18USV4DH, Инструкция по установке и руководство пользователя

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DC Inverter U-match Series Cassette Type Unit
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(5). If the air flow of indoor unit is high, this might cause negative pressure and
result in return suction of outdoor air. Therefore, U-type water trap shall be
designed on the drainage side of each indoor unit (Fig. 4.21).
(6). Install one water trap for each unit.
(7). Install the water trap so that it will be easy to access for future cleaning.
Fig. 4.21 Fig. 4.22 Fig. 4.23
(8). Connect the drainage branch pipe to the standpipe or horizontal pipe of
drainage main pipe. The horizontal pipe cannot be connected to the vertical
pipe at a same height. It must be connected in a manner as shown below:
NO.1: Attach the 3-way connection of the drainage pipe joint as shown in
Fig. 4.24.
NO.2: Attach the drain elbow as shown in Fig. 4.25.
NO.3: Attach the horizontal pipe as shown in Fig. 4.26.
Fig. 4.24 Fig. 4.25 Fig. 4.26
4.5.3 Precautions When Doing Riser Piping Work
(1). Make sure that heat insulation is applied as shown below to prevent any
possible water leakage due to condensation.
1). Connect the drain hose to the drain lift pipe, and insulate them.
2). Connect the drain hose to the drain outlet on the indoor unit, and secure it
with the clamp.