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Free Cooling - DISABLED
Free Cooling - ENABLED
Usable Outdoor Temp
(65 )
Turns on Free Cooling.
Free Cooling shuts off above this outdoor temperature. (40 - 80 degrees F)
Free Cooling is an energy saving way to boost the efficiency of your air conditioning
system by bringing in cool air from the outside. The installation of a Free Cooling
damper(s) and outdoor temperature sensor is required.
Mechanical air conditioning is turned on with a 2nd stage demand for cooling
and the Free Cooling, outdoor air damper is closed.
Settings
The Main Menu Buttons
Free Cooling
Mechanical Cooling? - NO
Mechanical Cooling? - YES
If you don’t have a compressor, set Mechanical Cooling to “NO”, Y1 will then be
used to control the Free Cooling Damper(s) and Y2 will be disabled. If set to
“YES”, mechanical (compressor) cooling will be controlled by the Y2 terminal.
(See page 48 for wiring diagram)
Installation Settings
(Continued)
Damper 1
Open
Damper 2
Closed
Supply
Plenum
Furnace
Air
Filter
Outdoor
Air Grill
Return Air Grill
Coil
Air Flow
Air Flow
Air Flow
Air Flow
Air Flow
Return
Plenum
Barometric
Damper
FREE
Free Cooling
Outdoor Air Grille
HVAC Unit
Supply Grilles
Return Grille
Free Cooling
Damper
Return
Damper
Vent to Attic
Barometric
(To relieve building pressure)
Summary of Contents for TSTATG4271GT
Page 60: ...Page 54 Notes...
Page 61: ...Page 55 Notes...
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