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Inst allat ion place
Vertical installations
Horizontal installations
DUCT CONNECTIONS：Air supply and return
may be handled in one of several ways best suited
to the installation (See table for dimensions for
duct inlet and outlet connections). The vast majority
of problems encountered with combination cooling
systems can be linked toimproperly designed or
installed duct systems, it is therefore highly
important to the success of an installation that the
duct system be properly designed and installed.
Use exible duct collars to minimize the transmission
of vibration/noise into the conditioned space.
Where return air duct is short, or where sound is
liable to be a problem, sound absorbing glass ber
should be used inside the duct. Insulation of duct
work is a must where it runs through an uncooled
space during the cooling season. The use of a vapor
barrier is recommended to prevent absorption of
moisture from the surrounding air into the insulation.
The supply air duct should be properly sized by
use of a transition to match unit opening. All ducts
should be suspended using exible hangers and
never fastened directly to the structure. This unit
is not designed for nonducted (freeblow)
applications. Duct work should be fabricated and
installed in accordance with local and/or national
switchs.
Page 18
18
24inch(min)
IM PORTANT
A eld-fabricated secondary drain pan, with a
drain pipe to the outside of the building, is
required in all installations over a nished living
space or in any area that may be damaged by
over ow from the main drain pan. In some
localities, local codes may require a secondary
drain pan for any horizontal installation.
M ount posit ions
The units can be installed in a vertical (down
and up)and Horizontal(right and left)
con guration.
Vert ical up inst allat ions
Horizont al inst allat ions
NOTE:
For installation, an drain pan(not
supplied) must be installed.
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