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Leak Prevention: Eliminates system pressure drops by maintaining precise internal sealing within both hydraulic and pneumatic systems
High Voltage Threshold: Rated for 440V
Designed for high-cycle industrial and HVACR applications
What does it mean if the board is not sensing flame
Johnson Controls T-4002-303 Conversion Kit R-410A Leak Prevention: Eliminates system pressureThe Johnson Controls T 4002 303 Conversion Kit is a professional grade solution designed for upgrading or replacing legacy pneumatic thermostats in commercial HVAC systems. This Direct Acting kit features a standard 55 85F dial range, providing precise pneumatic control within tight tolerances for optimized building automation. Engineered to replace Honeywell, Robertshaw, or older Johnson Controls models, the T 4002 303 streamlines the retrofitting