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for protection against damage. The outdoor coil is internally
mounted on the top tier of the unit. Copper fin coils and pre--coated
fin coils are available from the factory by special order. These coils
are recommended in applications where aluminum fins are likely to
be damaged due to corrosion. They are ideal for seacoast
applications.
Thermostatic expansion valve (TXV) —A hard--shutoff, balance
port TXV maintains a constant superheat at the evaporator exit
(cooling cycle) resulting in higher overall system ef ficiency .
High-- and low--pressure switches give added safety and
reliability to the c ompressor.
Low sound ratings ensure a quiet indoor and outdoor
environment with sound ratings as low as 75 dBA.
Easy to service cabinets provide easy single--panel accessibility to
serviceable components during maintenance and installation. The
basepan, with integrated drain pan, provides easy ground level
installation with or without a mounting pad. Convenient handholds
are provided to manipulate the unit on the job site. A nesting
feature ensures a positive basepan to roof curb seal when the unit i s
roof mounted. A convenient 3/4--in. wide perimeter flange makes
frame mounting on a rooftop easy.
Louver ed grille provides hail and vandalism protection for the
coil.
Cabinets are constructed of heavy--duty, phosphated, zinc--coated,
pre-- painted steel capable of withstanding 500 hrs of salt spray.
Interior surfaces of the evaporator and electric heater compartments
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 pan minimizes
standing water in the unit, which is provided with an external
drain.
Short--cycling pr otection for the compressor is incorporated into
our Infinity heat pump/air conditioner dual capacity control board
ensuring a five--minute delay before restarting compressor after
shutdown for any reason.
Limited Warranty—Standard 5--year limited warranty on all parts
and10--yearlimitedwarrantyoncompressor.
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--30....................................................................................
TYPICAL PIPING AND WIRING 31...............................................................................
APPLICATION DATA 32.........................................................................................
ELECTRICAL DATA 33.........................................................................................
TYPICAL WIRING SCHEMATICS 34..............................................................................
CONTROLS 35.................................................................................................
GUIDE SPECIFICATIONS 36--37..................................................................................
50XT