VW Boilers

Low Stress Design: Single pass construction eliminates differential expansion forces across heads, permitting design return temperatures as low as 70°F and immediate "cold starting" response to all call for heat. Boilers are warranted for five years against thermal stress leaks regardless of return temperature. Consult L.E.S. for boiler configuration/control options required for direct very low temperature operation.

High Efficiency: Series VW boilers are positive pressure non-condensing appliances. They are equipped with forced-draft burners for reliable 83% efficient combustion. High-temperature fiberglass rope is used to gasket burner flanges to burner ports and steel lids to flue-gathering chambers. Custom-fabricated bent steel turbulators installed in firetubes limit flue gas velocity, insuring maximum heat transfer. Heat losses associated with draft hoods and barometric dampers are eliminated and breeching/stack sizes can be reduced.

Steel Skids: Structural channel skids create a space (3" minimum) beneath boiler shells which may permit elimination of a poured concrete pad. Boilers can be rolled into place on steel pipes, levered into precise position, and easily/securely leveled by shimming of skids.

Compact Size: Individual boiler modules will often fit through existing doors, hallways, elevators, etc. Relatively light weights simplify location of heating plants anywhere within building, from basement to penthouse, and boilers can be grouped in any configuration for best utilization of designed or available spaces.