Hydronic Boiler Control, Oil Beckett HeatManager dynamic temperature reset Designed for use on residential & light commercial boiler systems Burner current rating: 7.4 A at 120 Vac FLA; 44.4 A inrush LRA. Circulator Current Rating (C1): 7.4 A at 120 Vac FLA; 44.4 A inrush LRA. Zone Control Current Rating (ZC): 7.4 A at 120 Vac FLA; 44.4 A inrush LRA.