Ductwork - LG AK-Q048GH50 Installation Manual

INSTALLATION OF UNIT
12
Slab Mount
"For ground level installation, the unit base
should be adequately supported and hold the
unit near level. The installation must meet the
guidelines set forth in local codes."
Type Net Weight
Horizontal
3/4/5RT
Downflow

Ductwork

Ductwork construction guidelines
Connections to the unit should be made with
76mm(3") canvas connectors to minimize
noise and vibration transmission.
Elbows with turning vanes or splitters are rec-
kg lbs
ommended to minimize air noise and resist-
ance.
174 384
The first elbow in the ductwork leaving the
176 388
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 insulat-
ed to minimize heating and cooling duct loss-
es. Use minimum of 50mm(2") of insulation
with a vapor barrier. The outside ductwork
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
indoors and molded out of heavy canvas.
• Do not draw the canvas taut between
NOTE
!
the solid ducts.