ECONOMIZER INPUT FUNCTION
Cooling economizer:
Consists of ducts, dampers, and automatic controlling system. In cold or warm climate, the
economizer reduces or stops the VRF compressor, providing cooling using outside air.
●
Example of economizer
Exhaust damper
Fresh air damper
Return air damper
Economizer
logic module
Room space
●
How to use economizer
Operation
mode
Environmental condition Intaking fresh
air
Air
conditioner
Economizer Remarks
Heating Cold climate
(~34°F [1°C])
Minimum* Heating Disable Heating by the air conditioner
Fresh air
intake cooling
Cool climate
(34~55°F [1~13°C])
Optimum Stop Enable Cooling by intaken fresh air
only
Combined Warm climate
(55~75°F[13~24°C])
100% Cooling Enable Combined cooling by
intaken fresh air and the air
conditioner
VRF cooling Hot climate
(75°F~ [24°C~])
Minimum* Cooling Disable Cooling by the air conditioner
*Minimum fresh air requirements are specied in
ASHRAE Standard 62.1.
- (08 - 27) -
EXTERNAL INPUT
& OUTPUT
EXTERNAL INPUT
& OUTPUT
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