Danfoss 193B-1600 Float Freon the Berko 3900-2002-507 is rated

the Berko 3900-2002-507 is rated specifically for 240V or 277V circuits

this replacement burner assembly ensures stable flame patterns and consistent thermal output in demanding hydronic systems

check for 120V at the valve terminals when the control board calls for heat

Always clear the lines before replacing the switch

the 150°F to 400°F range on this specific model is typically calibrated for griddles

Danfoss 193B-1600 Float Freon the Berko 3900-2002-507 is ratedThe Danfoss 193B 1600 is an ESBE ARA663 series 3 point floating motor actuator engineered for precise control of rotary mixing valves in hydronic heating and cooling systems. Operating on a 24VAC supply voltage, this compact non spring return actuator delivers a consistent 53 in lb torque (6 Nm) to handle 3 way and 4 way valves effortlessly. With a 90 degree ambient rotation time of 96 seconds, it provides the steady, incremental adjustment necessary