“Versatile fan timer control simplifies retrofits, speeds installation, and enhances oil furnace comfort and reliability”
Hydrolevel Company, a leading manufacturer of temperature and liquid level controls for residential and commercial heating applications, is proud to highlight its OFC‑5023 Oil Furnace Fan Timer Control, a modern control solution specifically designed for oil furnaces to help ensure reliable and efficient system operation. Engineered as an oil furnace fan timer control for 2‑ or 3‑speed PSC motors, the OFC‑5023 allows one control to work across a wide range of furnace configurations, simplifying replacement for contractors in the field. As a direct replacement for common oil furnace fan timers, including UTEC Models 1158‑100, 110, 120 and Resideo ST9103A, it enables fast change‑outs with minimal wiring changes so contractors can complete jobs quickly and reduce call‑backs.
Built with installer‑friendly details, the OFC‑5023 uses industry‑standard wiring terminals and relays to make installation familiar and straightforward, reducing wiring errors and helping ensure long‑term reliability. The thermostat and transformer terminals for 24 V control support standard low‑voltage thermostats, cooling, and dehumidification for seamless integration with existing accessories. On the line‑voltage side, blower outputs for COOL, HEAT, LOW, and continuous fan provide flexible fan control that improves comfort and air distribution throughout the home. The dedicated 120 VAC HUM and EAC outputs allow direct control of a humidifier and electronic air cleaner without extra relays.
To support fast and accurate diagnostics, the OFC‑5023 incorporates easy‑to‑understand status LEDs for thermostat calls at the W, Y, G, and Dh terminals, along with BURNER ON and BLOWER ON indicators that give technicians instant confirmation of system calls and outputs. In addition, LIMIT OPEN and SYS OK LEDs clearly indicate limit status, control self‑check status, and 24 V issues for simplified troubleshooting.
For greater comfort and efficiency, the OFC‑5023 offers field‑adjustable blower ON and OFF delays that allow contractors to fine‑tune blower timing to balance comfort, noise, and system efficiency while extracting more residual heat from the furnace. The counterflow ON/OFF selection with adjustable ON delay supports down‑flow and counter‑flow installations with proper blower timing so the same universal control can be used across multiple furnace orientations.
An intuitive DIP switch layout lets installers match the control to 2‑ or 3‑speed motors and set ON/OFF delays, providing quick, switch‑based customization, with no programming tools required, and saving time during installation and service while ensuring proper furnace operation. An organized board layout with clearly labeled components and terminals makes installation and service more intuitive. Its integrated dehumidifier (Dh) terminal coordinates fan operation with dehumidification calls to improve indoor comfort and moisture control without additional modules or complex wiring.
Together, these features position the OFC‑5023 as a versatile, installer‑friendly, and highly reliable oil furnace control that streamlines retrofits, simplifies wiring, and enhances comfort and performance.