DC Inverter U-match Series Duct Type Unit
21
Always check that the drain cap is installed to the unused drain port and is fastened with the nylon
fastener. If the drain cap is not installed, or is not sufficiently fastened by the nylon fastener, water
may drip during the cooling operation.
(1). Be sure to insulate where the drain port and the drain hose is connected (Fig.
4.26).
(2). The unused drain port also should be insulated properly (Fig. 4.27).
Fig. 4.26 Fig. 4.27
(3). There is adhesive on one side of the insulation so that after removing the
protective paper over it the insulation can be directly attached to the drain
hose.
(4). Considerations for the unit with the condensate pump:
1). For the unit with the condensate pump, only one drain port at the side close to
the electric box is prepared and only through it the drain hose can be
connected.
2). See Table 3.3 for the size of the drain port of the unit with the condensate
pump, which is different from that of the unit without the condensate pump.
3). For the unit with the condensate pump, two drain ports at the bottom are
defaulted to be factory plugged with drain caps. After the installation of the
drain hose, these two drain ports also need to be insulated properly with the
same way aforementioned.
4). The drain hose for the unit with the condensate pump should be arranged as
shown in the figure below.
Fig. 4.28
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