Products

COMMERCIAL BOILERS RTC

DESIGNED FOR CONDENSATION


High-efficiency condensing boilers designed both for retrofit and new construction projects. Project costs are reduced thanks to the high water content heat exchanger, that requires no minimum flow rate and eliminates the need of a costly dedicated boiler circulator. Best quality materials used for all components guarantee high reliability and longer service life.

Condensing boiler technology is the most efficient and environmentally friendly form of fuel heating available today. Condensing technology recovers the condensation heat retained latently in flue gases, that is a part of energy that normally disappears up the chimney in other heating systems.

Thanks to lower fuel consumption and lower heating costs, condensing boilers usually pay for themselves in few years, reducing costs up to 20% in comparison with conventional heating. Additionally, a modern condensing heating system increases the value of the building as well as quality of life by reducing emissions. High efficiency condensing equipment achieves qualifying points for LEED certification of commercial buildings.

Large heat-transfer surfaces, a counter-flow heat exchanger design and cold return water temperatures together optimize condensation opportunities.

The RTC Series Condensing Boilers could be equipped with two-stage or modulating forceddraft burners and premix, that achieve extremely low pollutant emissions meeting the most stringent NOx and CO requirements.



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FEATURES


FUEL OPTIONS
  • Natural Gas, Propane, or Dual Fuel (#2 fuel oil backup)
  • Full Condensing on natural gas/propane
  • Condensing capability on #2 fuel oil (< 15 ppm sulfur content)

PERFORMANCE
  • Efficiency up to 98%
  • 10:1 turndown Ratio (10%) when firing on natural gas or propane
  • Pressure rating up to 160 psi
  • Working temperature up to 195┬░F
  • NOx Emissions capable of 30 ppm or less at all firing rates when firing on natural gas
  • Capable of variable primary flow installations
DESIGN: STRUCTURE AND MATERIALS
  • 3-pass Fire Tube heat exchanger
  • High quality 316Ti stainless steel heat exchanger
  • Dual return water connections
  • Top connections for easy access to piping
  • One package for the jacket pack
  • Easy Serviceability

HIGH PERFORMANCE AND LOW INSTALLATION COST
  • Simple piping, no primary/secondary piping with extra circulator needed

LOOKING INSIDE: SHAPE AND MATERIALS



RTC 3000 - 6000

  • Easy installation and access to plant rooms
  • Top connections for easy access to piping
  • Double Return, low & medium temperature, to maximize condensation in all working conditions
  • 3-pass flue high mass design
  • Stainless steel 316Ti for:
    Combustion chamber
    Inversion tube
    Tube sheets
  • Stainless steel 316L for:
    Fire Tubes

RTC 8000 - 10000

  • Easy installation and access to plant rooms
  • Top connections for easy access to piping
  • Double Return, low & medium temperature, to maximize condensation in all working conditions
  • 3-pass flue high mass design
  • Stainless steel 316Ti for:
    Combustion chamber
    Inversion tube
    Tube sheets
  • Stainless steel 316L for:
    Fire Tubes


Zero flow conditions without overheating thanks to the two large diameter connections between the two cilindrical shells.

This solution allows to operate without overheating with the burner turned on and circulators turned off.


Technology made in Riello with utmost care to each detail.

The production process takes place in our centers of excellence.

All welding processes are fully automated.






TECHNICAL SPECIFICATIONS




TEN YEAR HEAT EXCHANGER WARRANTY

Riello warrants that the heat exchanger of the Boiler shall be free from leakage, thermal shock and condensate corrosion, and shall be free of defects in material and workmanship for TEN (10) YEARS from the date of manufacture, which date is found within the Boiler serial number on the data plate

 

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10/01/2018