SCI ERV-24-HC11 Especificações descarregar pdf (Página 12)

8. Fan Cycling Configuration

The purpose of fan cycling is to assure that the central air handler fan will run enough to distribute

ventilation air and evenly mix air throughout the house, even when there is no demand for heating or

cooling. Rather than operate the fan continuously or by a simple timer that doesn’t consider prior

operation, the FanCycler method saves energy and wear and tear on equipment by only operating the

fan if it hasn’t already operated enough. You can set this up in either of two ways:

a. Set the fan cycling ON time and OFF time (see 8.1); or

b. Set the fan duty cycle percentage and the total period (see 8.2).

For example, setting a fan cycling ON time of 10 and a fan cycling OFF time of 20 will cause the fan to

operate for 10 minutes if it has not operated for 20 minutes. Or, setting the fan duty cycle for 33 percent

and the total period for 30 minutes will cause the fan to operate for at least 10 minutes out of every 30

minutes. (Using the duty cycle method, the thermostat will skip turning the fan on if the time would be

less than 2 minutes). The results are similar, but you can choose the path.

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SCI ERV-24-HC11 Especificações Página 12