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TC5-8SDA rev.03
MINIMUM VENTILATION CYCLE
PRINCIPLE OF OPERATION
When the room temperature is below the set point, the Stage 1 fans
operate according to the minimum ventilation cycle. Running the fans
even though ventilation is not required for a cooling purpose is useful
to reduce humidity levels and supply oxygen to the room. It also
prevents the fans from freezing in winter.
During time on, the Stage 1 fans run. The Stages 1-2 Pilot Light
flashes. During time off, the Stage 1 fans do not run. The Stages 1-2
Pilot Light turns off.
Minimum Ventilation Cycle Settings
1.
To run the fans continuously at minimum speed, set time off to
zero and time on to any value other than zero.
2.
To stop the fans, set time on to zero and time off to any value.
3.
To run the fans intermittently, set time on to the desired running
time and time off to the desired off time.
STAGE 1
OFF
TIME ON
STAGE 1
TIME OFF
STAGE 1
