
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
Yes
Yes
No
Evaporator Freeze Thermostat
Yes
No
No
Winter Start Control
Yes
†
No
No
Accumulator
No
No
No
Compressor Start Assist —
Capacitor and Relay
Yes
Yes
No
Low-Ambient Controller
or Low-Ambient Pressure Switch
Yes
No
No
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
Yes
‡
No
No