Super Free Match
Service Manual
INSTALLATION
70
4.2.9 Installation of the Return Air Duct
1) The default installation location of the rectangular flange is in the back and the return air cover plate is
in the bottom.
2) If the downward return air is desired, just change the place of the rectangular flange and the return air
cover plate.
3) Connect one end of the return air duct to the return air outlet of the unit by rivets and the other to the
return air louver. For the sake of the convenience to freely adjust the height, a cutting of canvas duct
will be helpful, which can be reinforce and folded by８＃iron wire.
4) More noise is likely to be produced in the downward return air mode than the backward return air mode,
so it is suggestive to install a silencer and a plenum box to minimize the noise.
5) The installation method can be chose with considering the conditions of the building and maintenance
etc.
No. Name No. Name
1 Return Air Louver(with the filter screen) 4 Indoor Unit
2 Canvas Duct 5 Air Supply Duct
3 Return Air Duct 6 Access Grille
4.2.10 Installation of the Condensate Pipe
1) The condensate pipe should keep a inclination angle of 5～10°, which can facilitate the drainage of the
condensate water. And the joints of the condensate pipe should be insulated by the insulation material to
prevent condensing.
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