DC Inverter U-match Series Duct Type Unit
20
4.5.1 Installation of Drain Piping
Install the drain hose in accordance with the instructions in this installation manual and keep the area
warm enough to prevent condensation. Problems with the piping may lead to water leaks.
(1) Install the drain hose with downward gradient (1/50 to 1/100) and no risers
or traps are used for the hose (Fig. 4.21).
(2) Be sure there is no crack or leak on the drain hose to avoid the formation of
air pocket (Fig. 4.21).
(3) When the hose is long, install supporters (Fig. 4.22).
(4) Always use the drain hose which has been insulated properly.
Fig. 4.21
Fig. 4.22
Fig. 4.23
