Table Of Contents - Carrier 50JX Series Product Data

ambient kit is available as a field-
installed accessory and does not require
a special motor.
Corporate thermostats work with
Carrier's small packaged products as a
system to promote year round comfort.
Refrigerant system is designed to
provide dependability. Liquid refrigerant
strainers are used to promote clean,
unrestricted operation. Each unit leaves
the factory with a full refrigerant charge.
Refrigerant service connections make
checking operating pressures easier.
Low Pressure/Loss of Charge Switch
assures added safety and reliability for
the compressor.
Indoor and outdoor coils are
computer-designed for optimum heat
transfer and cooling efficiency. The
indoor coil is fabricated from copper
tube and aluminum fins and is located
inside the unit for protection against
damage. The outdoor coil is internally
mounted on the top tier of the unit. A
FIOP (Factory-Installed Option) metal
louvered grille is available on all
models. Copper fin coils and pre-coated
fin coils are available from the factory
by special order. These coils are

Table of contents

Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1,2
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
ARI Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5,6
Base Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7,8
Accessory Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Performance Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-18
Typical Piping and Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21,22
Typical Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-25
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-28
2
recommended in applications where
aluminum fins are likely to be damaged
due to corrosion. They are ideal for
seacoast applications.
Low sound ratings ensure a quiet
indoor and outdoor environment with
sound ratings as low as 72 dB.
(See page 3.)
Easy to service cabinets provide easy
single-panel accessibility to serviceable
components during maintenance and
installation. The unit base with
integrated drain provides easy ground
level installation with or without a
mounting pad. Convenient handholds
are provided to manipulate the unit on
the jobsite. A nesting feature ensures a
positive unit base to roof curb seal when
the unit is roof mounted. A convenient
3/4-in. wide perimeter flange makes
frame mounting on a rooftop easy.
Downflow operation is easily provided
in the field to allow vertical ductwork
connections. The unit base utilizes
knockout style seals on the bottom
openings to ensure a positive seal in the
horizontal airflow mode.
Standard metal duct covers with
insulation come with the unit and cover
the duct openings. These can be left in
place if the units are converted to
downshot.
Cabinets are constructed of heavy-
duty, phosphated, zinc-coated
prepainted steel capable of
withstanding 500 hours of salt spray.
Interior surfaces are insulated with
cleanable semi-rigid insulation board,
which keeps the conditioned air from
being affected by the outdoor ambient
temperature and provides improved
indoor air quality. (Conforms to
American Society of Heating,
Refrigeration and Air Conditioning
Engineers No. 62P.) The sloped drain
minimizes standing water in the drain,
which is provided with an external drain
fitting.
Short-Cycling protection for the
compressor is incorporated into our
defrost control board ensuring a five
minute delay (+/-2 minutes) before
restarting compressor after shutdown
for any reason.
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