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the 383-500-020 is specifically designed for Weil McLain Ultra Series 1 and Series 2 units
It requires a thorough combustion analysis
Automatic Reset: Resumes normal operation once temperatures fall back within the safe range
Built with a straight-thru flow design
Honeywell 34886A Sun Shield the 383-500-020 is specifically designedAs an experienced HVAC tech, you know that keeping a remote bulb sensor exposed to direct thermal radiation is a shortcut to inaccurate cycling and premature system wear. The Honeywell 34886A Sun Shield is the professional standard for protecting Honeywell remote bulb controllers and sensors from intense UV exposure and solar gain. This heavy duty outdoor temperature sensor shield acts as a dedicated thermal barrier, ensuring your T475, T991B, T678B,
