Specifications

ACCESSORIES (FIELD-INSTALLED)
STANDARD FEATURES AND FIELD-INSTALLED ACCESSORIES
STANDARD FEATURE/FIELD-INSTALLED
ACCESSORY
HIGH WALL
SYSTEMS
CEILING-SUSPENDED
SYSTEMS
IN-CEILING
CASSETTE SYSTEMS
Condensate Pump AA S
Mounting Brackets SS S
Microprocessor Controls S— —
24-V Electro-Mechanical Controls —S S
Cleanable Filters SS S
Charcoal Filter Kit A— —
Programmable Electronic Thermostat —A A
3-Speed Indoor-Fan Motor SS S
Automatic Indoor-Fan Speed Control SS S
Diagnostics SS* S*
Galvanized Steel Casing (Indoor Unit) —— S
Wired and Wireless Remote Controllers S (WR) S (W) S (W)
Fully Insulated Indoor Unit Cabinet SS S
Automatic Air Sweep SS —
User-Controlled Air Distribution —— S
Power Ventilation Kit —A A
Fresh Air Intake Kit —A A
Indoor Guard (Discharge Grille) —A —
Auto Restart Function SS S
24-Hour Automatic Start/Stop Timer SA A
50-ft 24v Control Power Cable† —S —
35-ft 24v Control Power Cable S (018,024) — —
35-ft Power and Control Cable S (009,012) — —
Refrigerant Line Turn Elbow† —S —
Thermistor Cable Assembly S— —
High- and Low-Voltage Terminal Blocks (Indoor) SS S
AccuRaterT Refrigerant Metering Device SS S
Electric Heat —S S
Demand Defrost S— —
Time/Temperature Defrost —S S
Warm Start (in heating) S— —
Evaporator Coil Freeze Protection S— —
Outdoor High- and Low-Voltage Terminal Block SS S
Accumulator SS S
Crankcase Heater (Reciprocating Compressors) SS S
Crankcase Heater (Scroll Compressor Units)** AA A
High-Pressure Switch† SS S
Loss of Charge Switch† SS S
5-Year Compressor Warranty SS S
Compressor Start Assistance (non-scroll units) SS S
Cycle-LOC™ Device† SS S
Suction and Discharge Service Taps†† SS S
Totally Enclosed Outdoor Fan Motor SS S
Acoustically-Lined Compressor Compartment SS S
Low Ambient Temperature Controls (down to −20 F) AA A
Heating Operation to −20 F SS S
Auto Changeover from Cooling to Heating SS S
Liquid Solenoid Valve† AA A
FIELD FABRICATED AND FIELD INSTALLED ACCESSORIES|
Stacking Rails† AA A
Condensing Unit Wall Mount Kit† AA A
Snow Stand† AA A
Ice Stand† AA A
Wind Baffles† AA A
LEGEND
A—Field-Installed Accessory
S—Standard from the Factory
W—Wired (24v)
WR — Wireless Remote
——Not Available on this System
*Limited diagnostics through standard 24v control.
†For size 018 and larger.
**Crankcase heaters are standard on 538B units without scroll com-
pressors, and are recommended as an accessory for scroll compres-
sor applications with line lengths over 100 ft and applications using
low-ambient kits.
††The 538B units are equipped with 4 taps; one for each service valve,
and one each on compressor suction and discharge.
\Drawings available for field fabricated accessories.
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