Installation guide
UNIT
SUPPORT
NOTE:
Unit
must
be
level
+
2
degrees
{%
inch
rise
or
fall
per
foot
of
run
(10mm
rise
or
fall
per
8305
mm
of
run)
}
or
compressor
may
not
function
properly.
A.
GROUND
LEVEL
INSTALLATION
The
unit
must
be
level
and
supported
above
grade
by
beams,
platform,
or
a
pad.
Platform
or
pad
can
be
of
open
or
solid
construction
but
should
be
of
permanent
materials
such
as
concrete,
bricks,
blocks,
steel,
or
pressure-
treated
timbers
approved
for
ground
contact.
Soil
conditions
must
be
considered
so
that
the
platform
or
pad
does
not
shift
or
settle
and
leave
the
unit
partially
supported.
Minimum
pad
dimensions
are
shown
in
Figure
2.
If
beams
or
an
open
platform
are
used
for
support,
it
is
recommended
that
the
soil
be
treated
or
area
be
graveled
to
reduce
the
growth
of
grasses
and
weeds.
To
minimize
vibration
or
noise
transmission,
it
is
recommended
that
supports
not
be
in
contact
with the
building
structure.
However,
slabs
on
grade
constructions
with
an
extended
pad
are
normally
acceptable.
CAUTION
PROPERTY
DAMAGE
HAZARD
Failure
to
follow
this
caution
may
result
in
property
damage.
A
Top surface
of
platform
must
be
above
estimated
snow-
fall
level
to
prevent
snow
blocking
coil
and
to
allow
water
melt
to
drain
from
unit.
B.
ROOF
TOP
INSTALLATION
This type
of
installation
is
not
recommended
on
wood
frame
structures
where
low
noise
levels
are
required.
Supporting
structure
or
platform
for
the
unit
must
be
level.
If
installation
is
on
a
flat
roof,
locate
unit
minimum
6
inches
(152mm)
above
roof
level.
Place
the
unit
over
one
or
more
load
bearing
walls.
If
there
are
several
units,
mount
them
on
platforms
that
are
self-supporting
and
span
several
load
bearing
walls.
These
suggestions
are
to
minimize
noise
and
vibration
transmission
through
the
structure.
If
the
structure
is
a
home
or
apartment,
avoid
locating
the
unit
over
bedrooms
or
study.
NOTE:
When
unit
is
to
be
installed
on
a
bonded
guaranteed
roof,
a
release
must
be
obtained
from
the
building
owner
to
free the installer
from
all
liabilities.
C.
FASTENING
UNIT
DOWN
If
conditions
or
local
codes
require
the
unit
be
attached
in
place,
remove
the
knockouts
in
the
base
pan
and
install
tie
down
bolts
through
the
holes
(refer
to
Figure
2).
Contact
local
distributor
for
hurricane
hold—down
details
and
the
PE.
(Professional
Engineer)
certification,
when
required.
A
CAUTION
PROPERTY
DAMAGE
HAZARD
Failure
to
follow
this
caution
may
result
in
property
damage.
Inadequate
unit
support
may
cause
excessive
vibration,
noise,
and/or
stress
on
the
refrigerant
lines,
leading
to
re-
frigerant
line
failure.
Tie
Down
Knockouts
View
From
Top
Figure
2
%”
(10mm)
dia.
Tie
Down
Knockouts
In
Base
Pan
(2
places)
Base
Pan
Width
Inches
(mm)
Tie
Down
Minimum
Waa:
x
Depth
Knockouts
Mounting
Pad
A
B
Cc
Dimensions
23
x
23
1%
|
4%6
18
23
x
23
(684
x
584)
(197)
|
(113)
|
(457)
(684
x
584)
25%6e
x
25%6e
|
946
|
446
|
21%
26
x
26
(652
x
652)
(230)
|
(113)
|
(640)
(660
x
660)
31%
x
31%
9%
|
6%
|
24%
31%
x
31%
(791
x
791)
(230)
|
(165)
|
(625)
(800
x
800)
346
x
34%6 |
946
|
6%
|
28%6
35
x
35
(887
x
887)
(230)
|
(165)
|
(722)
(889
x
889)
428
01
5103
02