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the 50VA rating (often rated 40VA in varied technical sheets) provides sufficient power for modern digital and smart thermostats
facilitating a uniform burner flame across the entire heat exchanger surface for maximum heat transfer
For pressures exceeding these ratings
Universal 24V Compatibility: Standard 24Vac operation integrates seamlessly with most contemporary boiler burner control circuits
For technicians performing a direct replacement
York S1-025-21785-002 heater Refrigerant the 50VA rating (often ratedThe York S1 025 21785 002 is a professional grade 10KW 460V 3 element heater designed for high demand commercial and industrial HVACR applications. As an OEM York replacement part, this heating element ensures precise compatibility with established York air handling units and furnace systems. Operating at 460V (commonly referenced in 480V systems), this three element configuration provides balanced load distribution and rapid heat transfer to meet
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