For Series 93 models

The inclusion of durable sleeve bearings and an automatic thermal protector allows for continuous duty in high-ambient conditions

The valve is compatible with chilled or hot water

Always verify the voltage at the inducer leads before installation to prevent winding damage

Reference the LED diagnostic light on the board surface

Lochinvar & A.O. Smith 100109151 Switch 319852-301 For Series 93 modelsThe Lochinvar & A. O. Smith 100109151 is a critical safety component designed for high efficiency BTH (Best Tankless Hybrid) water heaters and commercial boilers. This Low Gas Pressure Switch is factory calibrated to a 5" WC (Water Column) set point, serving as a primary sentry to ensure safe combustion cycles. In the field, this switch monitors the incoming gas supply pressure to prevent the burner from firing under insufficient pressure conditions,