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 interpreted to control three-phase fans by an EDrive.

The ENERVEX ADC100 Appliance Draft Control is used to control drafts in systems where modulation is not required. It controls the speed of the fan to maintain proper pressure in the chimney. The ADC100 is for indoor installations only. The control can be used with Models RS and GSV Fans. The ADC100 is typically used to control the draft of a gas-fired furnace, fireplace, stove, or pizza oven.

The ADC100 comes with an external PDS. The PDS is a NO/NC switch that monitors the pressure in the chimney. The ADC100 operates a chimney fan at a set speed to create and maintain a proper mechanical draft at the outlet of a heating appliance(s). The control provides a 10-120 VAC signal to single-phase fans, as well as a 0-10 VDC signal that can be used to control 3-phase fans by a variable frequency drive. The ADC100 comes with an external PDS. The PDS is a NO/ NC switch that monitors the pressure in the chimney. In case of inadequate draft, the PDS will open and if open for 15 seconds, the control will go into alarm mode and lockout the appliance until the draft is restored. The control features a manual and automatic adjustment mode which is selected via dipswitch. The PDS check function and manual or automatic reset function are also selected through a dipswitch. An integrated damper relay allows a damper to be connected directly to the ADC100. The control ensures that the damper is fully open before allowing the appliance to operate by interlocking the damper end-switches to the control. In the event that the controller senses any mechanical failures, the control will initiate a retry sequence