Note:
Bolt material is made of high quality carbon steel (surface is galvanized or has been undergone
other anti-corrosive treatments) or stainless steel.
Ceiling is different in different building. The detailed information should be consulted with the
decoration engineers.
Fix hanging bolts base on specific circumstance. Make sure to be solid and reliable.
6.3 Adjustment of air return box
The air return box of the short ducted unit is as standard, but the filter is optional. There are two air
return modes. The one is air return from back, which is the factory default, and the other is the air
return from below, which shall be adjusted in the field. For the adjustment method, refer to the table
below.
For the adjustment method, refer to the pictures below.
6.4 Air Intake Panel of Air Return Box
1) Pay attention to maintain the parallelism between the air grid angle and the air intake
direction when you make the air intake panel of the air return box.
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