• 75 MBH – 164 MBH
  • 4.5:1 Turndown Modulation Ratio in Heating mode (75)
  • 5.6:1 Turndown Modulation Ratio in Heating Mode (100)
  • 5.7:1 Turndown Modulation Ratio in Heating Mode (125)
  • 5.5:1 Turndown Modulation Ratio in Heating Mode (165)
  • Heat Exchanger: Iron Chromium Stainless Steel Heat Exchanger and Burner.
  • Additional Features: Assembled Boiler With Jacket, Induced Draft Fan, High Limit Sensors, 30 psi Relief Valve, Low Water Pressure Switch and Temperature/Pressure Gauge.
  • Build-In Load Matching Pump contributes to savings in electrical usage.

  • Outdoor Temperature Sensor and Indirect Tank Sensor
  • Our AI control technology is programmed to recognize an Indirect Tank. H2O Indirect Hot Water Heaters are available in 30-to-115-gallon capacities and feature 316L stainless steel construction and top connections for easy installation.

(See Installation, Operation and Maintenance Manual for complete instructions)