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freeze protection sensors
and 146-62-301
High Compatibility: Universal SPST open-high action and wide AC voltage ratings (up to 277Vac) allow this part to serve as a drop-in replacement for various HVAC temperature controllers
Safety Verified: Meets all manufacturer specifications for combustion safety and reliable exhaust venting
This board is primarily utilized in Lochinvar Knight XL (KB399-800) and FTXL (FTX400-850) boilers
ZoneFirst ZDS-12X10 Damper 321042-401 freeze protection sensorsThe ZoneFirst ZDS 12X10 is a professional grade rectangular zone damper engineered for precision airflow management in multi zone residential and light commercial HVAC systems. This 12" wide by 10" high unit features high quality extruded aluminum construction and a parallel blade design to ensure smooth operation with minimal pressure drop. The ZDS 12X10 damper is equipped with a 24Vac synchronous motor mounted on the 10" side, specifically
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