DC INVERTER U-MATCH AIR CONDITIONERS INSTALLATION
Sponge (gray)
Drain hose
Clamp
Clamp(attachment)
Sponge(attachment)
Below 4mm
Figure 1-3-7
2
Testing of Drainage System
After the electrical installation is completed, carry out the testing of the drainage system.
During the test, check if the water correctly flows through the pipelines. Carefully observe the joints
to ensure that there is no leakage. If the unit is to be installed in a new house, carry out testing
before decorating the ceiling.
3 Matters of Attention
The diameter of the drain hose should be equal or bigger than the connection pipe’s. ( The diameter
of polythene pipe: Outer diameter 25mm Surface thickness ≥1.5mm)
Drain hose should be short and drooping gradient should at less 1/100 to prevent the formation of
air bubble.
If drain hose cannot has enough drooping gradient, drain raising pipe should be added.
To prevent bent of the drain hose, the distance between hoisting stand should is 1 to 1.5m. (As
shown in Figure 1-3-8)
(Correct) 1/100 or more gradient
(wrong)
Figure 1-3-8
The install height of the drain raising pipe should less than 280mm.
The drain raising pipe should form a right angle with the unit, and distance to unit should not beyond
300mm. (As shown in Figure 1-3-9)
Celling
1-1.5m
Hanger bracket
Below
1120mm
Above
280mm
200mm
Drainage raising pipe
Drainage hose
(attachment)
Cassette type unit
with in 300mm
Clamp(attachment)
Figure 1-3-9
The slant gradient of the attached drain hose should be within 75mm so that the drain hole doesn’t
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