General
The outdoor units are designed to be connected to a
matching indoor coil with sweat connect lines. Sweat
connect units are factory charged with refrigerant for
a nominal sized matching indoor coil plus 15 ft of field-
supplied lines.
Matching indoor coils can be used with a thermostatic
expansion valve (TXV). Refer to the Tabular Data Sheet or to
the Technical Guide for the proper selection.
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 contractor, 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, it must be inspected for
possible damage during transit. If damage is evident,
the extent of the damage must be noted 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/servicing
R-410A equipment
• Gauge sets, hoses, refrigerant containers, and
recovery system must be designed to handle the POE
type oils, and the higher pressures of R-410A.
• Manifold sets should be high side and low side with
low side retard.
• All hoses must have a 700 psig service pressure
rating.
• Leak detectors should 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
The unit must be installed in accordance with all National,
State and Local Safety Codes and the limitations listed
below:
• 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
will give maximum performance and service life.
Table 1: Maximum/minimum operating limit
conditions
Air temperature at
outdoor coil °F
Air temperature at indoor
coil °F
Minimum Maximum Minimum Maximum
DB
cool
DB
heat
DB
cool
DB
heat
WB
cool
DB
heat
WB
cool
DB
heat
55 0 125 75 57 50 72 80
R-410A Outdoor Split-System Heat Pump Installation Manual - YH2E / THE2 / RHP143 Series 5
Johnson Controls Ducted Systems
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