COMMERCIAL BOILER ARRAY


THE ULTIMATE IN EFFICIENCY,
REDUNDACY & RELIABILITY


The Riello Array is a pre-packaged boiler plant, the new standard in boiler efficiency, redundancy and reliability.

Each Array boiler utilizes multiple heat engine modules, providing high turn down and multiple boiler redundancy in one packaged unit.

A single Array boiler provides superior uptime reliability previously found only in larger multiple boiler systems.

KEY FEATURES

  • One platform, multiple sizes
  • Built in redundancy. Each 500 MBH module is fully independent and “stand alone” thus allowing boiler operation even if an adjacent module is turned off
  • Plug&Play installation
  • Extremely simple to service and maintain
  • For operation with natural gas or propane
  • Factory installed flue exhaust damper on each module, allows common venting capability of Array boilers in cascade
  • Heat Exchanger Protection: Control monitors supply and return temperature and prevents heat exchanger from excessive temperature rise

HIGH PERFORMANCES

  • Efficiency up to 99%
  • NOx emissions of 9 PPM at 3% O2
  • Turndown ratio up to 40:1
  • ASME Design Pressure 80 PSI
  • Low noise operation (each module <48 dB)

SUPERIOR DESIGN: STRUCTURE AND MATERIALS

  • Modular design
  • Horizontal modules
  • High quality stainless steel heat exchanger (AISI 316L)
  • Direct vent / Room sealed combustion

FLEXIBLE INSTALLATION

  • Direct vent air intake and exhaust up to 100 equivalent feet
  • 6” to 10” venting system that can run horizontally or vertically
  • Venting Materials: CPVC, Polypropylene or AL29-4C stainless steel
  • Available with an air inlet damper for cold climates to prevent outdoor air from entering the heat exchanger in standby mode

LOOKING INSIDE


ADVANCED PREMIX BURNER


The Riello ARRAY Premix combustion system is comprised of a modulating gas valve integrated high performance fan and stainless steel mesh burner. The proportional control guarantees a consistent air: fuel ratio throughout the entire range of modulation resulting in a clean low temperature flame.

HIGH QUALITY HEAT EXCHANGER

  • Heat Engine with a unique "Helix" style design.
  • Advanced design for greater reliability and an extended life.
  • The heart of the ARRAY boiler is the power unit module.
  • Patented heat exchanger geometry consists of two stainless steel smooth pipes working in parallel eliminating the need for internal baffles.
  • The design allows minimum waterside pressure drop and efficient heat exchange.
  • Constructed for high reliability and long life
  • All water, gas, and venting connections on top
  • Small installed footprint
  • Assured minimum water flow rate for each module
  • One pump for each module
  • Stand-alone operation of each module to assure continuous functioning
  • No additional boiler pumps or valves are required
  • Color touch screen control

INSTALLATION ADVANTAGES

  • Ease of commissioning & maintenance
  • Minimum training required
  • Saves space and easy to install
  • Perfect for new installation and retrofit projects
  • Quick-to-install, cost-efficient accessories
  • Cascade up to 8 boilers (64 modules) allows to reach a modulation up to 320:1

OPERATION & MAINTENANCE

  • Internal cascade redundancy always delivers reliable performance with no downtime
  • Simple maintenance: each module can be serviced while the others are running
  • Easy roll-out module configuration: the boiler can work with one or more modules removed

CONTROLS


STANDARD ON-BOARD CONTROL FEATURES

  • 7” color touch screen outside the boiler cabinet
  • Graphic display of actual input rate of cascade, boiler and modules
  • User-Friendly menus to monitor the whole cascade (up to 8 boilers) or each single module
  • Immediate access to Cascade, Supply, Return, Flue temperatures and Fan speed of each module
  • Easy access to Settings, Service reminder, Outdoor reset capability, Error log
  • Control provides remote operation through the 0-10Vdc for set point






TECHNICAL SPECIFICATIONS




TEN YEAR HEAT EXCHANGER WARRANTY

Riello warrants that the heat exchanger of the Boiler shall be free of defects in material and workmanship for TEN (10) YEARS from the date of manufacture.

Riello warrants that the Boiler and approved accessories designated by Riello as standard equipment shall be free of defects in manufacture, material and workmanship for 18 months from shipment or 12 months from start-up (whichever comes first).