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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
the Maxitrol TS121 discharge air temperature sensor is the critical component for maintaining a stable 55-90°F terminal temperature range
Standardized Replacement: Specifically designed as the direct replacement for 4104-3
Use this OEM-equivalent replacement to restore factory-spec performance and ensure safe combustion sequences in HVAC gas furnace repair applications
40" WC setpoint required for this specific drainage safety circuit
enabling field conversion to the -400 and -404 series configurations if required by specific site conditions
Johnson Controls VG18A5MW Valve THPU32HP7Y the Maxitrol TS121 discharge airThe Johnson Controls VG18A5MW is a genuine 3 way flanged ball valve engineered for precise hydronic flow control in commercial HVAC systems. Featuring a 4 inch ASME Class 150 flanged connection, 185 Cv flow coefficient, and equal percentage flow characteristic, this valve is designed to deliver accurate modulation in chilled water, hot water, and condenser water applications. The forged brass body combined with stainless steel trim provides excellent