This L240-85F thermal switch is engineered for a snap-action response

as it is unaffected by high ambient temperatures in the field

which can cause the signal to ground out before reaching the probe

Chemical Resistance: Tank material is designed to withstand the acidic nature of HVAC condensate without degradation

Lochinvar & A.O. Smith 100111050 Blower 319852-301 This L240-85F thermal switch isThe Lochinvar & A. O. Smith 100111050 Blower Assembly is a critical OEM replacement part engineered specifically for BTH 199 and BTH 250 high efficiency commercial water heaters. As a veteran technician, you know that maintaining the correct air fuel mixture is non negotiable for system longevity and peak thermal efficiency. This centrifugal blower features an integrated Variable Frequency Drive (VFD) that responds to Pulse Width Modulation (PWM)