Gree U-MATCH GUHD09NK3CO

A/A DC INVERTER U-MATCH AIR CONDITIONERS INSTALLATION
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1.2.6 Drain Piping Work
1） Installation of Drainage Pipeline
 A Drainage outlet is located at both the left and right sides of the indoor unit. After selecting one Drainage outlet,
the other outlet shall be blocked by rubber plug. Bundle the blocked outlet with string to avoid leakage, and
also use thermal insulation materials to wrap the blocked outlet.
 When shipped out from factory, both the Drainage outlets are blocked by rubber plugs.
 When connecting the drainage pipe with the unit, do not apply excessive force to the pipeline at the side of the
unit. The fixing position of the pipeline shall be near the unit.
 Purchase general-purpose hard PVC pipe locally to be used as the drainage pipeline. When carrying out
connection, place the end of the PVC pipeline into the drainage hole. Use flexible drainage tube and tighten it
with thread loop. Never use adhesive to connect the drainage hole and the flexible drainage tube. (As shown in
Figure 1-2-9)
 When the laid drainage pipe is used for multiple units, the common pipe shall be about 100mm lower than the
drainage outlet of each set of unit. A pipe with thicker wall shall be used for such purpose.
Below 4mm
Sponge(attachment)
Clamp(attachment)
Clamp
Drain hose
Sponge (gray)
Figure 1-2-9
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 drain pipe outlet direction can be chosen from either the right rear or right.
The diameter of the drain pipe should be equal to or greater than the diameter of the connecting pipe. (Vinyl
tube; pipe size: 20mm; outer dimension: 26mm)
Keep the drain pipe short and incline downwards at a gradient of at least 1/100 to prevent air pockets. (Refer to
Figure 1-2-10)