Accessory Description and Usage (Listed Alphabetically) (Continued)
10. Sound Hood
Wraparound sound reducing cover for the compressor. Reduces the sound level by about 2 dBA.
Usage Guideline:
Suggested when unit is installed closer than 15 ft (4.57 m) to quiet areas, bedrooms, etc.
Suggested when unit is installed between two houses less than 10 ft (3.05 m) apart.
11. Support Feet
Four
Usage Guideline:
Suggested in the following applications: Coastal installations.
Windy areas or where debris is normally circulating. Rooftop installations.
For improved sound ratings.
12. Thermostatic Expansion Valve (TXV)
Amodulating
Kit includes valve, adapter tubes, and external equalizer tube. Hard shut off types are available.
NOTE: When using a hard shut off TXV with single phase reciprocating compressors, a Compressor Start Assist Capacitor and Relay is required.
13. Time-Delay Relay
An SPST delay relay which briefly continues operation of indoor blower motor to provide additional cooling after the compressor cycles off.
NOTE: Most indoor unit controls include this feature. For those that do not, use the guideline below.
Usage Guideline:
For improved efficiency ratings for certain combinations of indoor and outdoor units. Refer to AHRI Unitary Directory.
14. Winter Start Control
This control is designed to alleviate nuisance opening of the
116B
Usage Guideline:
Required to achieve AHRI ratings in certain equipment
combinations. Refer to combination ratings.
Hard shut off TXV or LLS required in air conditioner long line applications.
Required for use on all zoning systems.
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