12
4. After the system installation is complete, the
condensate drain line must be checked for leaks and
proper drainage. If a eld-provided condensate pump
has been installed, it must be checked to ensure proper
operation. This check is part of the start-up process
which must be done by the installing contractor.
IMPORTANT
Drain should have a slope of at least ¼ inch per foot and
should be approved corrosion-resistant pipe. You must
conrm operation of every drain and pump in the system
as part of the commissioning procedure.
DRAIN LINE
Slope at least 1/4”
per foot (18 mm per M)
3 ft. (1 m)
SUPPORT
STRAPS
Figure 17. Indoor Unit Suspended from Ceiling
using a Properly Sloped Gravity Drain
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 18. Install Unit Level
• Choose a place solid enough to bear the weight and
vibration of the unit, where the operation noise will not
be amplied
• 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 sufcient space to carry the unit into
and out of the site
• There must be unobstructed air ow around the air in-
let and the air outlet
• The unit must not be installed in areas where a am-
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 19.
Outdoor Unit on Pedestal (Stand) and Protective Can-
opy” or “Figure 24. Dog House-Style Shelter” on page
14.
IMPORTANT
The construction of a canopy or shade is recommended
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
19. Outdoor Unit on Pedestal (Stand) and Protective
Canopy”
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