Ductwork; Change Airflow - LG LK-C240BC02 Installation Manual

INSTALLATION OF UNIT
12

Ductwork

Ductwork construction guidelines
Connections to the unit should be made with
3"(76 mm) canvas connectors to minimize
noise and vibration transmission.
Elbows with turning vanes or splitters are rec-
ommended to minimize air noise and resist-
ance.
The first elbow in the ductwork leaving the
unit should be no closer than three times
blower diameter to avoid turbulence and back
pressure.
Attaching Horizontal Ductwork to
the Unit
All conditioned air ductwork should be insu-
lated to minimize heating and cooling duct
losses. Use minimum of 2"(50 mm) of insula-
tion with a vapor barrier. The outside duct-
work must be weather proofed between the
unit and the building.
When attaching ductwork to a horizontal unit,
provide a flexible water tight connection to
prevent noise transmission from the unit to
the ducts. The flexible connection must be in-
doors and molded out of heavy canvas.
!
NOTE
• Do not draw the canvas taut between
the solid ducts.
Change Airflow
Down flow to Horizontal flow Conversion
1
Remove the covers from the horizontal
Supply and return openings by unscrewing
as shown.
2
Close the downflow openings on the bot-
tom of the unit by attaching the covers
firmly on to it which are removed from the
horizontal openings.
* Cover assembly should be assembled as in-
sulation being downward.
* Flange according to the product may not be
applicable.
Wrong Installation
Right Installation
In case of assembling Return Cover for 20 and
25 RT, notch of Return Cover should be ori-
ented to barrier side
Flange
Flange
Supply Return
cover cover
Figure 3