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D
t
Recommended size of lter
Mount positions
Installation place
The units can be installed in a vercal (down
and up)and Horizontal(right and le)
configuraon.
Vertical up installations
Vertical installations
Horizontal installations
24inch(min)
24inch(min)
Page 18
Indoor Unit
Installation
W
MODEL(Btu/h)
12-24K
30-48K
W
16
495.3
60K 584.2
D
20
20
20
508
508
508
t
1
1
1
25.4
24.4
25.4
(unit: inch/mm)
406.4
19-1/2
23
inch mm inch mm inch mm
Model A（for North America models）
MODEL(Btu/h)
60K
W
495.3
D
508
20
t
25.4
1
19-1/2
inch mm inch mm inch mm
Model B
IMPORTANT
A field-fabricated secondary drain pan, with a
drain pipe to the outside of the building, is
required in all installaons over a finished living
space or in any area that may be damaged by
overflow from the main drain pan. In some
localies, local codes may require a secondary
drain pan for any horizontal installaon.
DUCT CONNECTIONS：Air supply and return
may be handled in one of several ways best suited
to the installaon (See table for dimensions for
duct inlet and outlet connecons). The vast majority
of problems encountered with combinaon cooling
systems can be linked toimproperly designed or
installed duct systems, it is therefore highly
important to the success of an installaon that the
duct system be properly designed and installed.
Use flexible duct collars to minimize the transmission
of vibraon/noise into the condioned space.
Where return air duct is short, or where sound is
liable to be a problem, sound absorbing glass fiber
should be used inside the duct. Insulaon 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 absorpon of
moisture from the surrounding air into the insulaon.
The supply air duct should be properly sized by
use of a transion to match unit opening. All ducts
should be suspended using flexible hangers and
never fastened directly to the structure. This unit
is not designed for nonducted (freeblow)
applicaons. Duct work should be fabricated and
installed in accordance with local and/or naonal
switchs.
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