Description

While most competitive boilers can give fuel-to-steam efficiencies of 80% or over when they are new — how consistently can they be expected to maintain this level? Burnham Commercial wetback boiler performance will not drop due to deteriorating rear refractory, leaking door baffles and seals, and heat-stressed rear tube sheet as can happen with some drybacks: the fact is that easy access is a necessity for those with heavy refractory, as they need frequent, expert maintenance. Over the life of a dryback, brittle refractory baffling and rear door gasketing will require continual monitoring, maintenance, and replacement, costing thousands upon thousands of dollars. These built-in maintenance coats can eventually equal or exceed the original cost of the boiler as refractory deteriorates, leaking hot gas causes boiler efficiency to fall until the condition is noticed and repairs can be made (expensive flue temperature alarms are offered with some drybacks to monitor this dangerous and costly potentiality). The rear door itself can become heat-distorted, requiring an expensive replacement. In addition, boiler downtime during repairs can mean crippling losses. This waste of time and money is eliminated with the Burnham Commercial Wetback: as it has an actively functional water jacket, there is no need for a refractory wall, rear door, rear door inspection and sealing, door swing space in the boiler room, or flue temperature alarm. These costly maintenance headaches are gone, while boiler performance is increased. Burnham Commercial has only a small, inexpensive refractory area in the rear access port. The furnace and rear turn around area are cool running, fully wetbacked radiant heat transfer surfaces. They promote good internal water circulation and rapid heat absorption. There is no need for the forced internal circulation pumps often specified to cool the rear tube-sheets in dry backs.