Lochinvar – Crest Condensing Commercial Gas Boilers

Commercial Boilers

CREST CONDENSING BOILER

The performance of the CREST boiler has changed the way the industry views fire-tube boilers.

THE FIRST NAME IN EFFICIENCY

CREST boilers are equipped with a top-mounted micro-metal fiber burner, engineered specifically for fire-tube technology. The system is designed to ensure smooth, quiet modulating combustion with up to 25:1 turndown. CREST is designed for efficiency to reduce your customer’s fuel bills.

  1. Reduce Installation Cost with Variable Flow Technology
    Installation is streamlined, without the time and materials cost of primary-secondary system/boiler piping.
  2. High Efficiency with Minimum Supply Pressure
    CREST operates reliably with supply gas pressure as low as 4 inches water column. Negative regulation (neg/reg) technology draws gas into a pre-mix combustion system instead of relying on utility pressure through the gas valve. Operation is steady in low gas pressure systems or when peak gas supply demand occurs.
  3. Peace of Mind When It Matters Most
    Cascade redundancy provides peace of mind because it helps ensure that a CREST boiler system will always deliver reliable performance with no downtime. Cascade sequencing can be programmed for Lead-Lag or Efficiency Optimized operation.
  4. Flexible Venting Options
    CREST offers 6 venting options, and it permits direct-vent air intake and exhaust runs up to 100 equivalent feet using PVC, CPVC, polypropylene or stainless steel pipe. Plus, multiple units can be common-vented to reduce time and materials cost.
  5. Superior Fire-Tube Heat Exchanger Design
    The patented Wave™ configuration creates turbulence as flue gas products flow down the tube, scrubbing the energy from the flue products. The Wave design enhances the life of the heat exchanger by allowing the tubes to flex so they operate stress free with none of the adverse effects suffered by traditional fire-tube boilers.
Model Number Input MBH Min. Input MBH Max. Thermal Efficiency Gross Output MBH Net Rating MBH Turndown A B C Gas Conn. Water Inlet/Outlet Air Intake Vent Size Oper. Wt. Ship. Wt.
FBN0751 50 750 96.2% 722 628 15:01 78″ 30” 55 1⁄2″ 1 1⁄4” 3” 6” 6” 1,768 1,560
FBN1001 50 999 96.2% 962 837 20:01 78″ 30” 56 1⁄2″ 1 1⁄4” 3” 6” 6” 1,838 1,596
FBN1251 63 1,250 96.2% 1,203 1,046 20:01 78″ 30” 56 1⁄2″ 1 1⁄4” 3” 6” 8” 1,975 1,648
FBN1501 60 1,500 96.2% 1,443 1,255 25:01:00 78″ 30” 67 3⁄4″ 1 1⁄2” 4” 8” 8” 2,307 1,961
FBN1751 70 1,750 96.2% 1,684 1,464 25:01:00 78″ 30” 66 1⁄4″ 1 1⁄2” 4” 8” 8” 2,458 2,017
FBN2001 80 1,999 96.2% 1,924 1,673 25:01:00 78″ 30” 66 1⁄2″ 1 1⁄2” 4” 8” 8” 2,570 2,087
FBN2501 125 2,500 96% 2,400 2,087 20:01 77 3⁄4″ 35″ 83 3⁄4″ 2″ 4″ 8″ 9″ 3,600 2,577
FBN3001 150 3,000 96% 2,883 2,507 20:01 77 3⁄4″ 35″ 83 3⁄4″ 2″ 4″ 10″ 10″ 3,900 2,881
FBN3501 175 3,500 96% 3,364 2,925 20:01 77 3⁄4″ 42″ 91 1⁄2″ 2″ 4″ 10″ 10″ 4,600 3,218
FBN4001 333 3,999 96% 3,843 3,342 12:01 77 3⁄4″ 45 1⁄2″ 103 1⁄2″ 2 1⁄2″ 4″ 12″ 12″ 5,200 3,805
FBN5001 500 4,999 96% 4,804 4,177 10:01 77 3⁄4″ 46 1⁄2″ 102 1⁄4″ 2 1⁄2″ 6″ 12″ 14″ 5,900 4,101
FBN6001 600 6,000 96% 5,766 5,014 10:01 77 3⁄4″ 50″ 102 3⁄4″ 2 1⁄2″ 6″ 14″ 14″ 6,900 4,711