Issue: 2/03 Bryan Steam has introduced Automatic Surface and Bottom Blowdown Systems to help maintain optimal boiler performance. A blowdown system helps maintain a safe level of dissolved solids in boiler water, prevents scale formation and helps eliminate downtime. While Bryan can provide these systems in either manual or automatic, the new Automatic Blowdown System will assure that the boiler has regular blowdown on a preset schedule. The system is comprised of a 24-hour synchronous drive time clock and a time delay relay in a NEMA Type 1 panel that controls a motorized ball valve. The new systems are recommended for use with Bryan AB, CL, DR, F, K, RV and RW series boilers. Bryan Steam.