10
Outdoor Unit Installation
Placement Considerations
CAUTION
In order to avoid injury, take proper precaution when
lifting heavy objects.
Consider the following when positioning the unit:
• In coastal areas or other places with salty atmosphere
of sulfate gas, corrosion may shorten the life of the
unit. In coastal areas, the coil should be cleaned with
potable water several times per year to avoid corrosive
buildup (salt)
• Some localities are adopting sound ordinances based
on the unit’s sound level registered from the adjacent
property, not from the property where the unit is in-
stalled. Install the unit as far as possible from the prop-
erty line
• When possible, do not install the unit directly outside
a window. Glass has a very high level of sound trans-
mission
• Install unit level
Ground
Level
Building Structure
Figure 13. Install Unit Level
• Choose a place solid enough to bear the weight and
vibration of the unit, where the operation noise will not
be amplified
• Choose a location where the hot air discharged from
the unit or the operation noise will not be a nuisance
to neighbors
• Avoid installing the outdoor unit near a bedroom or
other places where noise may cause a problem
•
There must be sufficient space to carry the unit into
and out of the site
•
There must be unobstructed air flow around the air in
-
let and the air outlet
•
The unit must not be installed in areas where a flam
-
mable gas leak may occur
• Install the outdoor unit a minimum of 3 feet (1m) away
from any antenna, power cord (line), radio, telephone,
security system, or intercom. Electrical interference
and radio frequencies from any of these sources may
affect operation
• Since water drains from the outdoor unit during vari-
ous stages of operation, do not place anything which
may be damaged by moisture under the unit
Direct Sunlight, Rain, Snow and Ice Protection
• If the outdoor unit is subjected to prolong exposure to
direct sunlight with temperatures over 100°F (38°C) a
canopy is recommended as illustrated in “Figure 14.
Outdoor Unit on Pedestal (Stand) and Protective Can
-
opy” or “Figure 19. Dog House-Style Shelter” on page
11.
IMPORTANT
The construction of a canopy or shade is necessary
because of an ambient limit control set to 122°F (50°C)
to protect the electronics. If the outdoor unit is placed in
direct sunlight it is possible that the limit may activate
and shut down the unit.
• Place unit away from overhanging roof lines which
would allow water or ice to drop on, or in front of, coil
or into unit. Construct a canopy as illustrated in “Figure
14. Outdoor Unit on Pedestal (Stand) and Protective
Canopy”
• The unit base should be elevated above the depth of
average snows as illustrated in “Figure 15. Outdoor
Unit on Brackets above Snow Line”
• In heavy snow areas, do not place the unit where drift-
ing will occur as illustrated in “Figure 16. Outdoor Unit
Air Flow Obstructed by Snow” on page 11
• Carefully consider how to manage defrost water dis-
posal to prevent ice from blocking walkways or creat-
ing a safety hazard near the outdoor unit as illustrat-
ed in “Figure 17. Avoid Defrost Water Ice Hazard” on
page 11
12 in
305 mm
Air Inlet
Air Outlet
24 in
610 mm
Side View
Front View
Protective canopy
Protective canopy
Pedestal
(stand)
Pedestal
(stand)
Figure 14. Outdoor Unit on Pedestal (Stand) and
Protective Canopy
