General
Read all sections of this manual and keep the manual for
future reference.
These outdoor condensing units are designed to be
connected to a matching indoor coil. They are equipped
with a filter-drier located in the liquid line.
Units with quick-connect coupling connections are
factory charged with refrigerant to be matched with the
appropriate pre-charged line set and indoor coil.
Certification
Safety
This is a safety alert symbol. When you see this
symbol on labels or in manuals, be alert to the
potential for personal injury.
Understand and pay particular attention to the signal
words DANGER, WARNING, or CAUTION.
DANGER indicates an imminently hazardous situation,
which, if not avoided, will result in death or serious
injury.
WARNING indicates a potentially hazardous situation,
which, if not avoided, could result in death or serious
injury.
CAUTION indicates a potentially hazardous situation,
which, if not avoided may result in minor or moderate
injury. It is also used to alert against unsafe practices and
hazards involving only property damage.
WARNING
Improper installation may create a condition where the
operation of the product could cause personal injury
or property damage. Improper installation, adjustment,
alteration, service, or maintenance can cause injury or
property damage. Refer to this manual for assistance.
For additional information, consult a qualified installer
or service agency.
CAUTION
This product must be installed in strict compliance
with the enclosed installation instructions and any
applicable local, state, and national codes including
but not limited to building, electrical, and mechanical
codes.
CAUTION
R-410A systems operate at higher pressures than
R-22 systems. Do not use R-22 service equipment
or components on R-410A equipment. Service
equipment must be rated for R-410A.
Inspection
As soon as a unit is received, you must inspect it for
possible damage during transit. If damage is evident,
you must note the extent of the damage on the carrier’s
delivery receipt. A separate request for inspection by
the carrier’s agent must be made in writing. See Local
Distributor for more information.
Requirements for installing or servicing R-410A
equipment
• Gauge sets, hoses, refrigerant containers, and the
recovery system must be designed to handle the POE
type oils and the higher pressures of R-410A.
• Manifold sets must be high side and low side with
low side retard.
• All hoses must have a 700-psig service pressure
rating.
• Leak detectors must be designed to detect HFC
refrigerant.
• Recovery equipment (including refrigerant recovery
containers) must be specifically designed to handle
R-410A.
• Do not use an R-22 TXV.
Limitations
You must install the unit in accordance with all national,
state, and local safety codes, and the following limitations:
• Limitations for the indoor unit, coil, and appropriate
accessories must also be observed.
• The outdoor unit must not be installed with any
duct work in the air stream. The outdoor fan is the
propeller type and is not designed to operate against
any additional external static pressure.
• The maximum and minimum conditions for
operation must be observed to ensure a system that
gives maximum performance with minimum service.
R-410A Outdoor Split-System Air Conditioning 5
Johnson Controls Ducted Systems
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