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1.1.6 Drain Piping Work
Installation of Drainage Pipeline:
(1) (Install the drain hose with downward gradient (1/50 to 1/100) and no risers or traps are used for
the hose (Figure 3-1-8).
(2) Be sure there is no crack or leak on the drain hose to avoid the formation of air pocket (Figure
3-1-8).
(3) When the hose is long, install supporters (Figure 3-1-9).
(4) Always use the drain hose which has been insulated properly.
CAUTION
Install the drain hose in accordance with the instructions in this installation manual and keep the a rea warm
enough to prevent condensation. Problems with the piping may lead to water leaks.
Drain hose
Arrange the drain hose
lower than this drain port
Trap
Air bleeding
Rise
¥
Figure 3-1-8
Supporter
Drain hose
1~1.5m(3-2/7~5feet)
Figure 3-1-9 Figure 3-1-10
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