*4
*1
*2
*3
*1
More than 25/64" More than 25/64"
(field supply)
A
B
(Ground)
(Obstruction above unit)
Inlet side
More than 8 in.
(Obstruction on
inlet side)
Air direction chamber
Outlet side
More than
3.3 ft.
Inlet side C
2-2. Outdoor Unit
AVOID:
● heat sources, exhaust fans, etc. (Fig. 2-5)
● 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 113°F
constantly.
● allow enough room around the unit for air intake/
exhaust and possible maintenance. (Fig. 2-6)
● use lug bolts or equal to bolt down unit, reducing
vibration and noise.
Installation space
Distance between obstructions and the unit air inlet
and outlet must be as shown below.
Fig. 2-5
Fig. 2-7
Fig. 2-8
Out-
door
unit
Heat source
Hot air
Exhaust fan
Anchor bolts
(4 pieces)
In case of multiple installations
● provide a solid base (concrete block, 4 × 16 in.
beams or equal), a minimum of 6 in. above ground
level to reduce humidity and protect the unit against
possible water damage and decreased service life.
(Fig. 2-8)
● use lug bolts or equal to bolt down unit, reducing
vibration and noise.
CAUTION
● Concerning inlet-side distance “C” (Fig. 2-6)
The minimum for distance “C” is 6 in. 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 in.
● If the unit is installed with the outlet side facing wall *1, then there must be no obstruc-
tions on 2 of the remaining 3 sides: *2, *3, *4.
● If wall *1 is on the outlet side (Fig. 2-6), or if obstructions are present on all 3 sides *2,
*3, and *4 (Fig. 2-6), then the minimum distance for “A” and “B” is 6.6 ft. (Fig. 2-8).
Even if there is no wall on the outlet side, a minimum of 3.3 ft. is required.
Fig. 2-6
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