This cover ensures consistent performance by shielding the internal force-balance assembly without interfering with air consumption or setpoint accuracy

or RV series actuators

With a standard NEMA 4X enclosure

such as switching from a low-speed fan to a high-speed tap

providing a seamless slide-in installation for service calls and preventative maintenance

Lochinvar & A.O. Smith 100135309 Burner 319848-301 This cover ensures consistent performanceThe Lochinvar & A. O. Smith 100135309 Burner is a critical combustion component designed for high efficiency hydronic systems. This OEM replacement burner is engineered specifically for use in Knight (KBN AWN WB) and Armor Shield (SNR) boiler and water heater models, including the 200 and 210 series. As a radial fire burner, it facilitates a precise fuel to air mixture for clean, stable combustion across varying firing rates. Integrating a 100135309