Boiler Specs: firetube_gas
Boiler performance specifications — thermal efficiency, turndown ratio, operating pressure, flue gas temperature, and fuel input rate by boiler type and output capacity (MBH)
| boiler type | capacity range MBH | flue gas temp F (F) | fuel input rate MBH (MBH) | notes | operating pressure range psig (psig) | thermal efficiency pct (%) | turndown ratio (dimensionless) |
|---|---|---|---|---|---|---|---|
| firetube_gas | 100 | 370 | 122 | 100 MBH small firetube gas boiler; 3-pass scotch marine; non-condensing; residential to light commercial; Burnham Commercial Series 3 or Cleaver-Brooks CB-LE 3HP; on-off or high-low-off burner; flue gas 350-400F | 15 | 82 | 3 |
| firetube_gas | 200 | 385 | 241 | 200 MBH firetube gas boiler; 3-pass; non-condensing; light commercial to commercial; Cleaver-Brooks CB-LE 6HP or Burnham Commercial C-Series; on-off or high-low-off burner; low capital cost vs condensing alternatives | 15 | 83 | 3 |
| firetube_gas | 400 | 400 | 482 | 400 MBH firetube gas boiler; 3-pass scotch marine; non-condensing; commercial; Cleaver-Brooks CB-LE 12HP or Bryan Steam CBG-400; on-off or high-low-off; typical LPHW at 15 psig or steam application | 15 | 83 | 3 |
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