Fujitsu Airstage J-II Series - Page 622

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HIGH STATIC PRESSURE DUCT TYPE
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Main drain pipe
H1
H2
60 to 79 in. (1.5 to 2.0 m)
Unit
Trap
Drain hose (main)
Drain pipe (main)
H1 = 4 in. (100 mm) or more
H2 = 2 - 4 in. (50-100 mm)
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Be sure to provide a drain trap for each indoor units.
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The drain trap will have no e󰀨ect if placed after multiple indoor units.
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The position of the installed drain hose should have a downward slope of (1/100 or more).
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Make sure that the drain hose is installed without rises.
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Make the trap near to the indoor unit, Position the trap in a location where it can be cleaned.
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Safety drain pipe
There is no need to provide a trap for the overow drain. If the overow drain is connected
to the main drain pipe, make the connection below the trap on the main drain pipe.
Once installation is complete, check the ow of the drain water.
Unit
Drain hose (main)
Drain hose (safety)
Drain pipe (main)
Overow Drain (safety)
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SYSTEM DESIGN SYSTEM DESIGN