Riello RTC 80 High-efficiency condensing boilers 1000-5500 MBH

HIGH-EFFICIENCY CONDENSING BOILERS 1000-5500 MBH

For retrofit and new construction projects


DESIGNED FOR CONDENSING


Riello high-efficiency condensing boilers are designed both for retrofit and new construction projects. Project costs are reduced thanks to the high water content heat exchanger, which doesn't require a minimum flow rate and eliminates the need of an expensive dedicated boiler circulator. Best quality materials used for all components ensure high reliability and longer service life.

Condensing boiler technology is the most efficient and ecological form of fuel heating available today. In particular, this technology recovers the latent heat retained in flue gas condensation. This latent energy is normally discharged to the chimney and is wasted in other heating systems. Thanks to the lower fuel consumption combined with the lower heating costs, condensing boilers usually pay for themselves in few years, reducing costs up to 20% in comparison with conventional heating. Furthermore, 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 dual inlets for different return water temperatures together optimize condensation opportunities.

The RTC condensing boiler series could be equipped with two-stage, fully modulating or premix forced-draft burners that achieve extremely low pollutant emissions meeting the most stringent NOx and CO requirements.

FEATURES



FUEL OPTIONS
  • Natural gas, propane gas, #2 fuel oil
  • Dual fuel options: gas/gas, gas/light oil

PERFORMANCE
  • Efficiency up to 98%
  • 10:1 turndown Ratio when firing on natural gas or propane
  • 80 psi ASME pressure rating
  • Working temperature up to 194 °F
  • NOx Emissions capable of 30 ppm or less at all firing rates when firing on natural gas
  • Able to work with variable primary flow installations
  • Fully-condensing on natural gas/propane
  • Condensing capability on #2 fuel oil (<15 ppm sulfur content)
DESIGN: STRUCTURE AND MATERIALS
  • 3-pass firetube counter-flow heat exchanger
  • High quality stainless steel heat exchanger with 316Ti upper combustion chamber and 316L lower tube bundle
  • Dual return water connections for optimized efficiency on multiple loop/multiple temperature systems
  • Top connections for clean, simplified piping layout
  • Jacket panels shipped separately for 'picture perfect' final installation
  • Hinged access doors for easy serviceability

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

LOOKING INSIDE: SHAPE AND MATERIALS



RTC-80 1000-5500

  • Easy installation and access to boiler rooms
  • High heating surface area within a compact footprint
  • Hydraulic connections on top for easy installation and clean piping layout
  • Double Return, low & medium temperature, to maximize condensing in multiple loop heating systems
  • 3-pass, counterflow high-mass design
  • Designed for coupling with fully modulating, or premix forced-draft burners
  • Stainless steel 316Ti for: Combustion chamber - Inversion tube - Tube sheets
  • Stainless steel 316L for firetubes

  • The proprietary design allows natural convective circulation within the boiler to prevent overheating. This protects the boiler from damage in zero flow conditions.
  • Innovative Riello technology produced with the upmost attention to detail.
  • The production process takes place in modern state-of-art manufacturing facilities.
  • Automated robotic welding ensures consistent, impeccable quality welds.







BURNERS OPTIONS



DIMENSIONS



TECHNICAL SPECIFICATIONS