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1. Specifications
3. SELECTING THE INSTALLATION SITE
3-1. Outdoor Unit
AVOID:
heat sources, exhaust fans, etc. (Fig. 1-3)
damp, humid or uneven locations
DO:
choose a place as cool as possible.
choose a place that is well ventilated and outside
air temperature does not exceed maximum 115°F
constantly.
allow enough room around the unit for air intake/
exhaust and possible maintenance. (Fig. 1-4)
use lug bolts or equal to bolt down unit, reducing
vibration and noise.
if cooling operation is to be used when the outdoor air
temperature is 23°F or below, install a duct on
the outdoor unit.
Installation space
Distance between obstructions and the unit air inlet
and outlet must be as shown below.
Installation requirements
provide a solid base (concrete block, 4"×16"
beams or equal), a minimum of 6" above ground
level to reduce humidity and protect the unit against
possible water damage and decreased service life.
(Fig. 1-6)
use lug bolts or equal to bolt down unit, reducing
vibration and noise.
Fig. 1-5
Out-
door
unit
Heat source
Hot air
Exhaust fan
*4*2
*3
*1
More than 1/2"
More than
3.3 ft.
More than 1/2"
Inlet side C
Outlet side
*1
Inlet side
More than 8"
(field supply)
A
B
(Ground)
Air direction chamber
(Obstruction above unit)
(Obstruction on
inlet side)
Anchor bolts
(4 pieces)
Fig. 1-4
Fig. 1-3
Fig. 1-6
CAUTION
Concerning inlet-side distance “C” (Fig. 1-4)
The minimum for distance “C” is 6" if there are no obstructions on the outlet side
(wall *1 side) and *2 or *4 is not present. In all other cases, the minimum for distance
“C” is 8".
If the unit is installed with the outlet side facing wall *1, then there must be no obstructions
on 2 of the remaining 3 sides: *2, *3, *4.
If wall *1 is on the outlet side (Fig. 1-4), or if obstructions are present on all 3 sides *2,
*3, and *4 (Fig. 1-4), then the minimum distance for “A” and “B” is 80" (Fig. 1-5). Even
if there is no wall on the outlet side, a minimum of 3.3 ft. is required.
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