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ACCESSORY DESCRIPTION AND USE (Listed Alphabetically) Continued
17. Time Delay Relay
An SPST delay relay which briefly continues operation of the indoor blower motor to provide additional cooling after the compressor cycles off.
SUGGESTED USE: For improved efficiency ratings for certain combinations of indoor and outdoor units. Refer to ARI Unitary Directory.
18. Winter Start Control
An SPST delay relay which bypasses the low-pressure switch for approximately 3 minutes to permit start-up for cooling operation under low load
conditions.
SUGGESTED USE: All air conditioners where Low-Ambient Controller has been added.
ACCESSORY USAGE GUIDELINE
* For tubing line sets greater than 50 ft 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.
SOUND POWER (dBA)
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
MotorMaster® Control
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 Yes‡ No No
Unit
Size
Sound
Level
(dBA)
OCTAVE BAND CENTER FREQUENCY (Hz)
125 250 500 1000 2000 4000 8000
018-C, D 76 54.0 63.5 66.0 66.0 65.0 62.5 55.5
024-C, D 78 53.0 69.0 69.5 71.0 68.5 64.5 60.5
030-C, D 80 53.5 64.0 66.5 69.5 69.0 65.0 58.5
036-C, D 80 57.0 65.5 71.0 75.0 71.0 67.5 62.0
042-C, D 80 62.5 69.0 72.0 75.0 72.0 69.5 62.5
048-C 82 63.0 71.0 71.0 72.0 73.5 68.0 63.5
060-C 82 61.5 69.5 71.0 74.5 70.0 69.0 66.0