Enhanced Thermal Sensitivity: Provides specialized lower thermostat calibration to ensure the bottom element activates only when necessary

OEM specification is recommended for critical building automation paths

How often should a MERV 11 media filter be replaced

Using an incorrect WC rating can lead to inefficient combustion or hazardous operating conditions

or the unit entering a lockout state due to a failed flame rectification signal

Lochinvar & A.O. Smith 100166229 Pressure Switch 30067439-890 Enhanced Thermal Sensitivity: Provides specializedThe Lochinvar & A. O. Smith 100166229 Pressure Switch is a critical safety and operational component designed for high efficiency hydronic systems. This OEM replacement pressure switch is a Single Pole Double Throw (SPDT) device, factory calibrated to a 1. 25" WC (Water Column) set point. It serves as a direct cross reference for the discontinued PRS30009, ensuring seamless mechanical and electrical integration without the need for field