18
2-2. Outdoor Unit
AVOID:
●
heat sources, exhaust fans, etc. (Fig. 2-4)
●
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 45°C
constantly.
●
allow enough room around the unit for air intake/
exhaust and possible maintenance. (Fig. 2-5)
●
use lag 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. 2-4
Fig. 2-5
Fig. 2-6
Fig. 2-7
Out-
door
unit
Heat source
Hot air
Exhaust fan
Air in
Air in
Air
discharge
Anchor bolts
(4 pieces)
Min. 15cm
In case of multiple installations
●
provide a solid base (concrete block, 10
×
40 cm
beams or equal), a minimum of 15 cm above
ground level to reduce humidity and protect the unit
against possible water damage and decreased ser-
vice life. (Fig. 2-7)
●
use lug bolts or equal to bolt down unit, reducing
vibration and noise.
*4
*1
*2
*3
*1
More than 1cm
More than
100cm
More than 1cm
Inlet side C
Inlet side
More than 20cm
Outlet side
(field supply)
A
B
(ground)
Air direction chamber
(Obstruction above unit)
(Obstruction on
inlet side)
CAUTION
●
Concerning inlet-side distance “C” (Fig. 2-5)
The minimum for distance “C” is 15 cm 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 20 cm.
●
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. 2-5), or if obstructions are present on all 3 sides *2,
*3, and *4 (Fig. 2-5), then the minimum distance for “A” and “B” is 2 m (Fig. 2-7). Even
if there is no wall on the outlet side, a minimum of 100 cm is required.
04-393 DC INV Tech p a-44 12/15/04 3:04 PM Page 18
