Advertisement
2.
If downward return air is desired, swap 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 and the other to the
return air louver. To prevent vibration and noise transmission, a flexible connection should be made
between the return air and the unit.
4. More noise is likely to be produced in the downward return air mode than the backward return air
mode. It is recommended that a silencer and plenum box be fitted to minimise noise.
5.
The installation method should consider the conditions of the building, maintenance access, etc.,
as shown in Figure 12.
Table 5: Parts and Components of the Return Air Duct
No.
1
2
3
13 23 50
|
lennoxaus.com.au
Figure 11: Location of the Rectangular Duct Mounting Flange
Figure 12: Installation Method
Name
Return Air Louvre
Flexible Connection
Return Air Duct
LENNOX MULTI SPLIT INVERTER
Slim Line Ducted Indoor Unit
No.
4
5
6
Name
Indoor Unit
Air Supply Duct
Access Grille
15
Advertisement
