Heat Exchanger Copper
Size Range 300 - 2,100* MBH
Turndown On/Off, 2-Stage, 4-stage
Application Primary/Secondary
*400 MBH N/A in US Market

The Dominator Series from RBI, with sizing from 300 to 2,100 MBH, offers the ultimate flexibility in boiler and water heater application, all at a competitive price. With efficiencies nearing 85.1%, the Dominator has one of the highest efficiency levels available in non-condensing boiler and water heater market. Capable of operating using mechanical room air for combustion or by drawing outside air directly as a sealed combustion product, the Dominator can vent combustion gases vertically or horizontally with factory equipped draft-inducer kits.

In commercial boiler applications where mechanical space is limited, the Dominator's stackable frame option allows units to be stacked two-high, adding valuable BTUs while keeping the footprint to the size of a single unit. In addition, the Dominator provides up to four stages of firing, allowing the boiler to match the heating load more closely.

And with built-in serviceability features, including a slide out heat exchanger, contractors no longer need to remove the heat exchanger for service or repair, which, when coupled with high efficiencies, makes the Dominator a cost-saving option for any boiler application.

Note: Photo is of an outdoor unit.

300-2,100 MBH

2-Stage/4-Stage

features and benefits
  • 300 - 2,100* MBH
  • On/Off, 2-Stage, 4-stage
  • Copper 2-Pass Heat Exchanger (160 psi)
  • Sealed Combustion Chamber
  • Mounted & Wired Flow Switch
  • Uginox Alloy Stainless Burners
  • Stackable Frame
  • Field Reversible Headers
  • Category I and III Venting
  • Direct Vent (up to 35')
  • Slide Out Heat Exchanger
  • Galvalume Metal Jacket
  • Indoor/Outdoor
  • Low Nox
Dominator Dimensions and ratings*
  Input   Boiler Output Overall Length Flue Vent Ducted Air Shipping Weight
Model MBH kW MBH kW In. mm In. mm In. mm Lbs Kg
DB/DW 300 300 88 251 73 22-1/8" 562 6" 152 6" 152 512 232
DB/DW 400 399 117 339 99 28-5/8" 727 6" 152 6" 152 585 265
DB/DW 600 600 176 510 149 35-1/8" 892 7" 178 8" 203 710 322
DB/DW 750 750 220 638 187 41-5/8" 1057 8" 203 8" 203 710 322
DB/DW 900 900 264 765 224 48-1/8" 1222 10" 254 10" 254 800 363
DB/DW 1050 1050 308 893 262 58-3/8" 1483 10" 254 10" 254 915 415
DB/DW 1350 1350 396 1148 336 71-3/8" 1813 12" 305 12" 305 975 442
DB/DW 1500 1500 440 1275 374 77-7/8" 1978 14** 356 12" 305 1015 460
DB/DW 1950 1950 572 1658 486 97-3/8" 2473 14** 356 12" 305 1285 583
DB/DW 2100 2100 616 1785 523 103-7/8" 2638 14** 356 12" 305 1300 590

*Ratings reflect boilers only. For boiler efficiency information please visit www.ahridirectory.org

** 14" oval to round transistion piece.

Literature