Direct-drive multispeed, PSC
(permanent split capacitor)
blower motor
is standard on all
models.
Direct-drive, PSC condenser-fan
motors
are designed to help re-
duce energy consumption and provide
for cooling operation down to 40 F.
Refrigerant system
is designed to
provide dependability. Liquid refriger-
ant strainers are used to promote
clean, unrestricted operation. Each
unit leaves the factory with a full refrig-
erant charge. Refrigerant service
connections make checking operating
pressures easier.
A fixed metering device controls
refrigerant flow precisely.
Protection devices
include a suction
line accumulator that keeps liquid
refrigerant from reaching the com-
pressor and a crankcase heater to
keep compressor oil warm for opti-
mum lubrication. This equipment
is not required or included on units
using scroll compressors.
Solid-state Time Guard
t
circuit
protects the compressor by prevent-
ing potentially damaging too-rapid
cycling.
Evaporator and condenser coils
are computer-designed for optimum
heat transfer and cooling efficiency.
Condenser coil is fabricated of copper
tube and aluminum fins and is lo-
cated inside the unit to protect against
damage and ensure long life and reli-
able operation. The condenser coil
is protected by a rubber-coated, metal
grille.
Copper fin coils
are also available
by special order. These coils are recom-
mended in applications where alumi-
num fins are likely to be destroyed
due to corrosion. They are ideal for
seacoast applications.
Chronotemp™ defrost system
pro-
vides time/temperature-based defrost
cycles to maintain unit efficiency.
This highly reliable system checks for
coil icing conditions at preset time
intervals and initiates a defrost cycle
only if required. The defrost cycle
ends as soon as defrosting is
accomplished.
Weatherized cabinets
are con-
structed of heavy-duty, phosphated,
zinc-coated prepainted steel capable
of withstanding 500 hours in salt
spray. Interior surfaces of the indoor
compartment are insulated with
foil-faced fiberglass to help keep the
conditioned air from being affected by
the outdoor ambient temperature
and to provide improved air quality.
Unit insulation conforms to American
Society of Heating, Refrigeration,
and Air Conditioning Engineers
(ASHRAE) No. 62P. Sloped conden-
sate pan permits an external drain.
Low sound ratings
ensure a quiet
indoor and outdoor environment with
sound ratings as low as 7.8 bels.
Easy to service cabinets
provide
easy accessibility to serviceable com-
ponents during installation and
maintenance. Rounded corners are an
important safety feature. A high-
quality finish ensures an attractive
appearance.
Round duct connections
provide
easy installation for manufactured
housing.
Compact size
enables the unit to be
located where space is limited.
Downflow-only option
is shipped
from factory for vertical ductwork con-
nection and requires no conversion.
Optional base rail
provides holes
for rigging and handling as well as an
elevated mounting frame that gives
additional structural support to
horizontal installations.
Table of contents
Page
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,2
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ARI Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-21
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Typical Single-Phase Control Wiring Schematic . . . . . . . . . . . . . . . . . . . . 24
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25,26
Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27,28
Model number nomenclature
UNIT WITH OPTIONAL BASE RAIL
2
