Renewaire FM Percentage Timer With Interlock The FM Percent Timer with Interlock serves as the primary control for RenewAire residential ERV models when furnace interlock functionality is needed. With this intention, it controls the operation of the furnace blower in synchronization with the ERV, ensuring fresh air circulation while optimizing energy efficiency. The control’s indicator lights display the runtime percentage, allowing users to adjust the ERV and furnace/air-conditioning blower operation based on specific needs. Truly, this control is ideal for residential settings where integrated HVAC and ventilation control is desired. This control is essential for integrating ERV systems with existing HVAC setups, ensuring synchronized operation for optimal energy efficiency and indoor air quality. General Features: Low Voltage Connection: Connects to the EV unit and either the thermostat or furnace control to trigger the furnace blower. Six-Wire Connection: Uses six wires for a complete and secure connection between the ERV and furnace. Simultaneous Operation: Ensures the furnace blower operates in tandem with the ERV, providing fresh air circulation throughout the home. Adjustable Timer: Allows the unit to run for a customizable amount of time every hour, adjustable in 10% increments from 10% (6 minutes per hour) to 100% continuous operation. This flexibility accommodates variations in occupancy levels, indoor air quality needs, and seasonal changes. Constant “On” and “Off” Capability: Offers flexibility to maintain continuous or intermittent operation. The control can be set to turn the ERV off or to operate constantly, depending on indoor air quality concerns and lifestyle preferences. 24VAC Power Requirement: Operates on 24VAC power, making it compatible with any HE Series ERV with onboard 24VAC power. Compatibility: EV90 EV90P EV130 EV200 EV240 EV300 EV Premium S EV Premium M EV Premium L EV Premium X SL75 Please see the OEM Installation and Operation Manual linked here for more detailed information on the proper installation, wiring options, percentage run-time tables, and safe operation instructions. Click here to see our other Renewaire Residential Controls.