Heater vessel is constructed of mild steel and built to ASME code, Section IV, and bears the "H" stamp for 150psi. Includes fused 120V control circuit transformer; magnetic contactors; supplemental branch circuit fuses; automatic reset hi-temperature limit; pilot switch; pressure & temperature gauge; pressure relief valve; low water cutoff; drain valve; and electronic temperature control. Ancillary equipment: bladder expansion tank; 1 HP Grundfos CR3-6 230/460 volt centrifugal pump; stainless steel remote NEMA 4X enclosure with sub-panel including 60amp disconnect; 3 starters; selector switches; terminal blocks; 750VA transformer. Rated at 24 kW, 240V/3/60 with a heating capacity of 82,000 btu/Hr. Includes 6 elements rated 4 kW each. *Note this is not a steam boiler, it's just a hot water boiler. Shipping info: One skid, 50x50x100. Weight = 1,880 lbs.