Millivolt control lighting instructions 
to the OFF position, set thermostat to lowest setting and turn ON/OFF switch to OFF position.
to IGN position. Push in control knob for 5 seconds.
to the ON position.
TO TURN OFF GAS TO HEATER 
to OFF position to completely shut off the heater.
EYF24, EYF18 specifications
The Monessen Hearth EYF24 and EYF18 represent a perfect blend of style, efficiency, and innovative technology in the world of vent-free gas fireplaces. Designed for homeowners who desire warmth and ambiance without the complexities of traditional fireplaces, these units stand out as reliable heating solutions.The EYF24 and EYF18 are designed with a sleek and modern aesthetic, making them suitable for a variety of home decors. Their compact size allows for versatile installation options, making them ideal for both small spaces and larger living areas. With a focus on ease of use, both models come equipped with user-friendly controls, enabling homeowners to adjust the flame height and heat output effortlessly.
One of the standout features of these Monessen fireplaces is their vent-free technology. This allows the units to operate efficiently without the need for a chimney or flue, which means less installation cost and hassle. The design also facilitates greater flexibility in placement, as they can be installed in virtually any room. Whether you want to enhance a cozy den or add warmth to a larger gathering space, the EYF24 and EYF18 are adaptable to your needs.
Another notable characteristic is their high-efficiency rating. Both models utilize advanced burner technology that maximizes heat output while minimizing energy consumption. This capability not only ensures a comfortable indoor environment but also helps in reducing heating costs. The units are designed to generate realistic flames, creating an inviting ambiance that can be enjoyed year-round.
In terms of safety, Monessen has integrated several features into the EYF24 and EYF18. The oxygen depletion sensor (ODS) automatically shuts off the unit if oxygen levels fall below safe limits, providing peace of mind for homeowners. Additionally, the units are designed to operate quietly, allowing for an undisturbed living experience.
Customization options also abound with these models. Homeowners can select from a range of decorative media, including logs, stones, and glass, to personalize their fireplace's appearance. This flexibility ensures that each installation can be uniquely tailored to match individual tastes and home styles.
In conclusion, the Monessen Hearth EYF24 and EYF18 fireplaces are excellent choices for anyone seeking a stylish, efficient, and safe heating solution. With their modern design, vent-free technology, and user-friendly features, they offer an inviting and warm atmosphere that can enhance any home environment.