Specs

7
Accessory Description and Usage (Listed Alphabetically) -- CONTINUED
14. 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.
(4.577 m) to quiet areas, bedrooms, etc.
Suggested when unit is installed between two houses less
than 10 ft. (3.05 m) apart.
15. Thermostatic Expansion Valve (TXV) Bi--Flow
A modulating flow--control valve which meters refrigerant liquid
flow rate into the evaporator in response to the superheat of the
refrigerant gas leaving the evaporator.
Usage Guideline:
Accessory required to meet AHRI rating and system
reliability, where indoor not equipped.
Required in all heat pump applications designed with
R--410A refrigerant.
16. 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:
Accessory required to meet AHRI rating, where indoor
not equipped.