Quality Heat Exchanger Design The 15B Series features a dependable cast iron heat exchanger with cast iron push nipples. The sections and push nipples expand at the same rate when heated. By using similar materials instead of less expensive gaskets, or steel push nipples, the boiler maintains a water tight seal.
Efficiency The 15B Series provides an annual fuel utilization efficiency of 82% as certified by the US Department of Energy.
Easy Installation and Maintenance The 15B Series features a Low Profile Draft Hood and Vent Damper. The low profile, compact design makes it ideal for low clearance installations.
Warranty 20 Year Limited Heat Exchanger Warranty
Choice of Two Operating Controls Honeywell or HydroLevel 3250
Standard Honeywell control, with digital display and diagnostics, monitors water temperature and delays burner from starting until the residual heat energy with in the boiler is consumed.
Optional HydroLevel 3250, with digital display and diagnostics, adjusts the water temperature based on your heating system demand which further reduces your heating costs. It also features a built-in low water cut-off (LWCO) to protect the boiler from potentially dangerous low water conditions.