In gas-fired fireplaces modulation may not always be required. In this case, an ENERVEX Fan and Damper Control (ADC 100) is a great choice.
This fan controller may be interlocked with the fireplace to control the speed of the fan and maintain proper draft in the chimney. It provides a 10-120 VAC signal to single-phase fans, and a 0-10 VDC signal that can be interpretted to control three-phase fans by an EDrive.
Features
0-10 VAC control signal and 10-120 VAC for variable speed
For indoor installations only
For use with RS Fans
Includes an external PDS Proven Draft Switch
Controls both 1x120V and 3x230V/460V fan (three-phase fans require an EDrive)