
37
3-30. Installing the Duct
Connect the duct supplied in the fi eld.
Air inlet side
Attach the duct and intake-side fl ange (fi eld supply).
●
Connect the fl ange to the main unit with 10 -
●
Ø
1/8" (Hole) screws.
Wrap the intake-side fl ange and duct connection area with aluminum tape or something similar to prevent air
●
escaping.
When attaching a duct to the intake-side, be sure to attach an air fi lter inside the air passage on the intake-side.
(Use an air fi lter whose dust collecting effi ciency is at least 50% in a gravimetric technique.)
The included fi lter is not used when the intake duct is attached.
Air outlet side
Connect the duct according to the air outside of the outlet-side fl ange.
●
Wrap the outlet-side fl ange and the duct connection area with aluminum tape or something similar to prevent air
●
escaping.
Be sure to insulate the duct to prevent condensation from forming.
●
(Material: glass wool or polyethylene foam, 1 in. thick)
Use electric insulation between the duct and the wall when using metal ducts to pass metal laths of the net or fence
●
shape or metal plating into wooden buildings.
Be sure to explain about the way of maintaining and cleaning local procurements (air fi lter, grille [both air outlet and
●
suction grille], etc.) to your customer.
Flange
(Field supply)
Connection screw (×10)
Rectangular solid duct
(Field supply)
Flange
Insulation material
(Field supply)
Air inlet side
Air outlet side
Main unit
Fig. 3-106
VRF_Indoor_US.indb 37VRF_Indoor_US.indb 37 2011/09/30 12:23:082011/09/30 12:23:08
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