15
OPERATION
<Operation mode>
FV-10VEC2, FV-10VEC2H
EA damper open
OA damper open
Center
damper
closed
EA damper closed
Circulation mode (for defrost)
Heat exchange mode
OA damper closed
Center
damper
open
FV-10VEC2 and FV-10VEC2H are recommended for areas where temperature is -22 °F (-30 °C)~104 °F (40 °C).
Supply
air (SA)
Outside
air (OA)
Exhaust
air (EA)
Return
air (RA)
FV-10VE2 and FV-10VE2H are recommended for areas where temperature is 14 °F (-10 °C)~104 °F (40 °C).
FV-10VE2, FV-10VE2H
OA damper open
Heat exchange mode
Outside
air (OA)
Exhaust
air (EA)
Supply
air (SA)
Return
air (RA)
Supply
air (SA)
Return
air (RA)
Example of FV-10VEC2 and FV-10VEC2H
Outdoor temp.
Operation mode and time (min)
Heat exchange mode
60
>14 °F (-10 °C)
14 °F (-10 °C)~
5 °F (-15 °C)
5 °F (-15 °C)~
-4 °F (-20 °C)
-4 °F (-20 °C)~
-17 °F (-27 °C)
-17 °F (-27 °C)~
-22 °F (-30 °C)
Circulation mode
Stop operating
···
···
60
9
···
35
9
9
9
···
27
···
···
20
-22 °F (-30 °C)
···
47
4
9
Repetition
When the ASHRAE timer is set to 60 min/h or the boost switch is on.
(The operation time of air exchange mode depends on the ASHRAE timer setting, and it is
automatically set to 60 min/h when the boost switch is on.)
