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3) Drain hose
For easy drainage of the condensation water, the should be installed with a downward gradient. To
avoid the condensation, the connection pipe joint should be insulated with thermal insulation material.
A water seal should be employed as shown in Fig. 10.3 and the height of the water seal could be
determined by the pressure of the drain hose.
Drain hose is in negative pressure state: A = B≥P/10+20 (mm)
Drain hose is in positive pressure state: A≥30mm,B≥P/10+20 (mm)
Note: P is the absolute pressure of the drain hose position, Pa
4 Refrigerant pipe insulation layer
To avoid condensation of drew and water leakage, gas pipe and liquid pipe of refrigerant should be
insulated with thermal insulation material and adhesive tape.
5 Install the Electrical Box. (Be Suit For 30KW)
In order to ease the maintaining work, we recommend to get of the electrical box part of the indoor
unit to refix it at the air outlet part. Please see following Fig 10.4.
Fig. 10.3
Fig. 10.4 Schematic for the Electrical Box part
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