The multi-mount configuration

OEM specification is recommended for critical building automation paths

using this white color-coded spring ensures the pilot maintains the ±0

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

Lochinvar & A.O. Smith 100166229 Pressure Switch 30067439-890 The multi-mount configurationThe 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