Bryant 556A User Manual
Page 5
ACCESSORY USAGE GUIDELINE
ACCESSORY
REQUIRED FOR
LOW-AMBIENT
APPLICATIONS
(BELOW 55°F)
REQUIRED FOR
LONG-LINE
APPLICATIONS*
(OVER 50 FT)
REQUIRED FOR
BURIED LINE
APPLICATIONS†
(OVER 3 FT)
REQUIRED FOR
SEA COAST
APPLICATIONS
(WITHIN 2 MILES)
Crankcase Heater
Yes
Yes
Yes
No
Evaporator Freeze Thermostat
Yes
No
No
No
Winter Start Control
Yes‡
No
No
No
Accumulator
No
No
Yes
No
Compressor Start Assist
Capacitor and Relay
Yes
Yes
Yes
No
Low-Ambient Controller,
MotorMaster® Control,
or
Low-Ambient Pressure Switch
Yes
No
No
No
Wind Baffle
See Low-Ambient Instructions
No
No
No
Coastal Filter
No
No
No
Yes
Support Feet
Recommended
No
No
Recommended
Liquid-Line Solenoid Valve
or
Hard Shutoff TXV
No
See Long-Line
Application
Guideline
Yes
No
Ball Bearing Fan Motor
Yes**
No
No
No
* For tubing line sets between 50 and 175 ft, refer to the Application Guideline and Service Manual for Residential Split-System Air Conditioners and Heat Pumps using
R-410A Refrigerant.
† For buried line applications, refer to Residential Split System Buried-Line Application Guideline.
‡ Only when low-pressure switch is used.
** Required for Low-Ambient Controller (full modulation feature) and MotorMaster® Control only.
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