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M3 MEDIUM-MASS CONDENSING HYDRONIC GAS BOILER

  • 5 models: 500,000 through 800,000 BTU
  • VFD modulation with up to 4-to-1 turndown
  • Up to 96% thermal efficiency at full fire
  • Duplex stainless steel tank and fire tubes
  • Fits through a standard 36-inch door
  • Vents through 4 or 6-inch diameter PVC, CPVC, Polypropylene
    or Stainless Steel
  • Low NOx, premix surface burner
  • Primary-only or primary-secondary piping


 

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