5
Accessory usage guideline
*For Tubing line sets greater than 50 ft horizontal and/or 20 ft vertical differential, refer to Residential Split System Long-Line Application Guideline and Service Manual.
† Only when low-pressure switch is used.
‡ Required for low-ambient controller (full modulation feature) and MotorMaster® Control only.
ACCESSORY
REQUIRED FOR
LOW-AMBIENT
APPLICATIONS (Below 55°F)
REQUIRED FOR
LONG-LINE
APPLICATIONS* (Over 50 Ft)
REQUIRED FOR
SEA COAST
APPLICATIONS (Within 2 Miles)
Crankcase Heater
Ye s Yes No
Evaporator Freeze Thermostat
Ye s N o N o
Winter Start Control
Ye s †
No No
Accumulator
No No No
Compressor Start Assist —
Capacitor and Relay
Ye s Yes No
Low-Ambient Controller
or Low-Ambient Pressure Switch
Ye s N o N o
Wind Baffle
See Low-Ambient Instructions No No
Coastal Filter
No No Yes
Support Feet
Recommended No Recommended
Liquid-Line Solenoid Valve
or Hard Shutoff TXV
No
See Long-Line
Application Guideline No
Ball Bearing Fan Motor
Ye s ‡
No No
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