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General
This 4SCU23LX outdoor air conditioner with all-aluminum
coil is designed for use with HFC-410A refrigerant only.
This unit must be installed with an approved indoor air
handler or coil. The 4SCU23LX variable capacity unit may
be installed with an A3 communicating thermostat or a
standard 24VAC non-communicating thermostat. See field
wiring diagrams for wiring details. These instructions are
intended as a general guide and do not supersede local
codes in any way. Consult authorities having jurisdiction
before installation.
NOTE: Special procedures are required for cleaning
the all-aluminum coil in this unit. See Page 23 in this
instruction for information.
Inspection of Shipment
Upon receipt of equipment, carefully inspect it for possible
shipping damage. If damage is found, it should be noted
on the carrier's freight bill. Take special care to examine
the unit inside the carton if the carton is damaged. Any
concealed damage discovered should be reported to the
last carrier immediately, preferably in writing, and should
include a request for inspection by the carrier's agent.
If any damages are discovered and reported to the carrier
DO NOT INSTALL THE UNIT, as claim may be denied.
Check the unit rating plate to confirm specifications are as
ordered.
Safety Precautions
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions
thoroughly and follow all warning or cautions attached to
the unit.
1.
Always wear proper personal protection equipment.
2.
Always disconnect electrical power before removing
panel or servicing equipment.
3.
Keep hands and clothing away from moving parts.
4.
Handle refrigerant with caution; refer to proper MSDS
from refrigerant supplier.
5.
Use care when lifting, avoid contact with sharp edges.
Installation
NOTE: In some cases, noise in the living area has been
traced to gas pulsations from improper installation of
equipment.
•
Locate unit away from windows, patios, decks, etc.
where unit operation sounds may disturb customer.
•
Leave some slack between structure and unit to
absorb vibration.
Page 2 of 25
•
Place a sound-absorbing material, such as Isomode,
under the unit if it will be installed in a location or
position that will transmit sound or vibration to the
living area or adjacent buildings.
•
Install the unit high enough above the ground or roof to
allow adequate drainage of defrost water and prevent
ice buildup.
•
In heavy snow areas, do not locate the unit where
drifting snow will occur. The unit base should be
elevated above the depth of average snows.
NOTE: Elevation of the unit may be accomplished
by constructing a frame using suitable materials. If a
support frame is constructed, it must not block drain
holes in unit base.
•
When
installed
temperatures exist, locate unit so winter prevailing
winds do not blow directly into outdoor coil.
•
Locate unit away from overhanging roof lines which
would allow water or ice to drop on, or in front of, coil
or into unit.
To prevent personal injury, as well as damage to panels,
unit or structure, observe the following:
While installing or servicing this unit, carefully stow all
removed panels so that the panels will not cause injury
to personnel, objects or nearby structures. Also, take
care to store panels where they will not be subject to
damage (e.g., being bent or scratched).
While handling or stowing the panels, consider any
weather conditions (especially wind) that may cause
panels to be blown around and damaged.
Exhaust vents from dryers, water heaters and furnaces
should be directed away from the outdoor unit.
Prolonged exposure to exhaust gases and the chemicals
contained within them may cause condensation to form
on the steel cabinet and other metal components of the
outdoor unit. This will diminish unit performance and
longevity.
When outdoor unit is connected to factory-approved indoor
unit, outdoor unit contains system refrigerant charge for
operation with matching indoor unit when connected by 15
ft. of field-supplied tubing. For proper unit operation, check
refrigerant charge using charging information located on
control box cover.
Issue 2231
in
areas
where
low
WARNING
IMPORTANT
ambient
508296-01
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