The control changes feedwater volume to the coils in response to every change in steam demand. This modulated flow of feedwater varies the amount of steam output without the thermal shock of on-off feedwater pump action experienced in conventional boilers.

In addition, a patented servo fuel control accurately adjusts fuel and air for the most efficient combustion mixture by continually monitoring changes in the feedwater flow. Inefficient burner cycling is eliminated, fluctuating demands are satisfied and steam pressure is held constant. The design is such that the boiler cannot be fired without water being fed into the coils.

Controls
An integral control panel contains all controls and indicators necessary for the safe operation of the unit. A programmed operating sequence is also incorporated for simplified startup.

Free Start-Up Service
A qualified service representative is on hand for two consecutive days during start-up to assure trouble-free operation and provide on-site operator training

Built to Meet Standards
Every unit is built to ASME Standards, Hartford inspected and National Board registered. Coast Guard, American Bureau of Shipping, Factory Mutual, Industrial Risk Insurers, Lloyds and other approvals are also available upon request.

Factory Tested
All units are fire tested for up to three days at the factory, with their individual controls to assure proper operation and to allow for control adjustments, which avoid installation delays.