To maintain optimal performance

The VT3221 is primarily designed for liquid media

This HVAC control relay is a direct OEM fit for Berko CUH900 series heaters and various QMark unit heaters

we recommend replacing the flame sensor rod to avoid repeated no-heat calls

This rubber seat poppet model is specifically designed for main burner and pilot load applications where maintaining accurate control of low flow rates is critical for stable combustion

Johnson Controls GRD10-1R Wire Guard Els PW 17895 To maintain optimal performanceThe Johnson Controls GRD10 1R Wire Guard is a heavy duty field accessory designed to protect critical environmental controls from physical damage, tampering, and unauthorized setpoint adjustment. This steel wire thermostat guard features a robust, open web design that ensures maximum airflow to the sensing element while providing a physical barrier in high traffic or hostile environments. With inside dimensions of 6. 19" x 3. 81" x 2. 56", the GRD10