The HS199 Con is a condensing Micro Boiler for use in Radiant Heating Systems. This boiler is available in both LP and NG. It has a standard max water delivery temperature of 160° F, with the ability to go up to 185° F with a special control, (HS-TM-RE40). This boiler is designed for use with Tubing in Concrete Emitters such as Embedded Concrete or Staple Down/Pour Over or Baseboard, Radiator, and Staple Up when using the HS-TM-RE40 Control. This boiler should be used with Hydro Smart Panels.