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Installation procedure
Installation for air duct of indoor unit
1. Installation for air supply duct
This type of unit uses circular air duct with its caliber of 180mm.
An additional transitive air duct is necessary for the circular air duct to connect to the air
supply inlet. It should be also connected to its respective air diffuser separately. See
Fig.1. Adjust the wind speed of each air diffuser outlet to keep in line on the whole, so
as to meet a demand of the air conditioner in the room.
Indoor unit
2. Installation for air return duct
Use rivets to connect the air return duct to the air return inlet of the indoor unit. The
other end connects to the air return shutter. as shown in Fig.2.
air return
shutter
3. Air duct insulation
Insulation layer is needed for air supply and return duct. First, paste a glue nail to the
air duct, and then attach the insulation cotton that has a tinfoil layer and use the glue
nail cover to fix. Finally, seal the air duct interface with tinfoil adhesive tape closely.
as shown in Fig3.
galvanized
board
glue nail
transitive air duct
flexible joint
or static pressure box
Fig1: Duct connected
air return
duct
Fig2: Duct return connected
insulating
glue nail cover
fabric
tinfoil
Fig3
25
Installation of indoor unit
circular air duct
*** mm
indoor unit
rivet
adhesive tape
joint of air diffuser
air diffuser
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