11
Install of ducted type indoor unit
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Designing of the Drainage Pipelines
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The drainage pipes should be kept at a certain gradient (1/50—1/100) so as to avoid bulges of pipes
where there might be water bends.
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When connecting the drainage pipes with the unit, care must be taken not to exert too much force on
the pipelines of either side of the unit, and the pipes should be fixed as close to the unit as possible.
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The drainage pipes can be the locally purchased hard PVC pipes for common purposes. When making
the connections, the end of the PVC pipe should be inserted into the drainage hole. Use drainage hose
and wire bondage to fix it tightly. It is not allowed to use adhesive glue to join the drainage hole and
the drainage tube.
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When the drainage pipeline is laid for a couple of units, the position of the shared pipeline should be
approximately 100mm lower than the drainage outlet of each unit. In this case, some special-purpose
pipes with thicker walls sill be used.
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Testing on the Drainage System
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Upon completion of the installation of the electric appliances, the testing on the drainage system
should be performed.
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During the testing, it should be made sure that the water flows through the pipeline in the correct
direction. Careful observations should be made on the joints to ensure that there is no leakage of water
at the joints.
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In the case that the unit is to be installed in a new building, it is recommended that the testing be made
prior to the decoration of the ceiling.
Summary of Contents for OV-R224P/Na-M
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