Airwell VVFA Series Service Manual page 23

(3) Multi-unit installation in front and back (unit: in.(mm))
• The installation service spaces shown in the illustrations are based on an air intake temperature of 95°F(35°C)(DB)
for COOL operation. In regions where the air intake temperature regularly exceeds 95°F(35°C)(DB), or if the heat
load of outdoor units is expected to regularly exceed the maximum operating capacity, reserve a larger space
than that indicated at the air intake side of units.
• Regarding the required air outlet space, position the units with consideration to the space required for the onsite
refrigerant piping work as well. Consult your dealer if the work conditions do not match those in the drawings.
(4) Precautions on installation
NOTICE
If drain holes of the outdoor unit are covered by a mounting base or by floor
surface, raise the unit in order to provide a free space of more than 5in.(130mm)
under the outdoor unit.
Foundation work
• Check the strength and level of the installation ground so that the unit will not
cause any operating vibration or noise after installation.
• In accordance with the foundation drawing in the figure, fix the unit securely
by means of the foundation bolts.
• It is best to screw in the foundation bolts until their length are 0.8in.(20mm)
from the foundation surface.
• Fix the outdoor unit to the foundation bolts using nuts with resin washers(1) as shown in the figure.
• If there is no need to install the outdoor machine in the open space of the building or the enclosure, the following
two ways can be used to avoid the fan reversal or damage caused by strong wind blowing.
(1) Using the windshield (2) Near wall installation
Wind deflector
Fierce wind
More than 2000mm
The top and two side surfaces must be exposed to
open space, and barriers on at least one side of the
front and back shall be lower than the outdoor unit.
1
21
Fierce wind