Pressurized hot water boiler TRISTAR 2S

Pressurized, reversed flame, three passes, hot water boiler, in carbon steel, for gas burners only, also LOW NOx.

• Certified in ranged output
• Boiler body of elliptic shape, up to 870 kW, and cylindrical shape for the remaining models.
• High mechanical resistance thanks to the floating furnace from 680 to 6100 kW.
• Third actual smoke pass in special multi-fin bimetallic pipes
  - first section of the pipes with turbulators and the last section with aluminum profiles that assures high thermal exchange withstanding the condensates (Unical Patent)
  - tab effect on the welding seams of the pipes to the rear tube plate (Unical Patent)
• Water ways guided and braked by special baffles inside the boiler body
• High thickness insulation in mineral wool
• Adjustable front door in vertical / transversal / axial direction, with double opening (to the right and to the left), with insulation in recyclable super light concrete
• Construction according to EN 303-1 - pipes in carbon steel according to DIN 1626,
• 2 bulb holders of ½” with inside diameter from 15 mm (suitable for 3 bulbs each)