DC Inverter U-match Series Duct Type Unit
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4.6.2 Installation of the Supply Air Duct
(1). Installation of the Rectangular Duct.
Fig. 4.34
Table 4.6 Installation of the
rectangular duct
No.
Name
No.
Name
1
Hanger
5
Filter
2
Air Intake
Pipe
6
Main Air
Supply
Pipe
3
Canvas
Air Pipe
7
Air Supply
Outlet
4
Air Intake
①
.
The maximum length of the duct means the maximum length of the supply air duct plus the
maximum length of the return air duct.
②
.
The duct is rectangular and connected with the air inlet/outlet of the indoor unit. Among all supply
air outlets, at least one should be kept open.
Bottom Return Air Installation only for the 18k Units.
(2). The default installation location of the rectangular flange is at the back and the
return air cover plate is at the bottom, as shown in Fig. 4.35.
Fig. 4.35
(3). If the bottom return air is desired, just change the place of the rectangular
flange and the return air cover plate.
(4). 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
reinforced and folded by 8# iron wire.
