Design and Technical Manual

3. OUTDOOR UNIT & BRANCH BOX
INSTALLATION SPACE3.
OUTDOOR UNIT3-1.
Caution
The installation space shown in the following examples is based on an ambient temperature under ●
cooling operation of 95 °F DB (35 °C DB) at the air intake of the outdoor unit.
Provide more space around the air intake than shown in the examples if the ambient temperature
exceeds 95 °F DB (35 °C DB) or if the thermal load of all of the outdoor units exceeds the capacity.
Consider the transportation route, installation space, maintenance space, and access, and install ●
the unit in a location with sufficient space for the refrigerant piping.
Observe the installation space specifications that are shown in the figures. ●
Provide the same space for the air intake at the rear of the outdoor unit.
If the installation is not performed according to the specifications, it could cause a short circuit and
result in a lack of operating performance.
As a result, the outdoor unit might easily be stopped by high-pressure protection.
Air intake
Rear view
Installation methods not shown in the following examples are not recommended. ●
Performance may drop significantly.
SINGLE OUTDOOR UNIT INSTALLATION3-1-1.
WHEN THE UPWARD AREA IS OPEN

Unit : in. (mm)
Obstacles at rear only
z
z
Obstacles at rear and sides only
6 (150)
8 (200)
8 (200)
12 (300)
Obstacles at front only
z
z
Obstacles at front and rear only
40 (1000) or more
40 (1000) or more
6 (150)
WHEN AN OBSTRUCTION IS PRESENT ALSO IN THE UPWARD

AREA
Obstacles at rear and above only
z
z
Obstacles at rear, sides, and above
only
12 (300)
Max. 20 (500)
40 (1000)
60 (1500)
10 (250)
10 (250)
20 (500)
Max. 20 (500)
- (03 - 06) -
OUTDOOR UNITS OUTDOOR UNITS