Master-Fit® BTL Ultra-Low NOx Multi Flue Standard Draft Gas Water Heater

Master-Fit® BTL Ultra-Low NOx Multi Flue Standard Draft Gas Water Heater

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The Master-Fit® Ultra-Low NOx BTL series complies with California SCAQMD Rule 1146.2 and other air quality management districts with similar NOx emission requirements of 14 ng/J or 20 ppm. For ease of installation, all BTL’s feature water connections on the top, front and rear.

  • Features and Benefits
  • How It Works
  • Application and Installation


Top Service Items
  • Top Service Items
  • No Hot Water
  • Tripped ECO No High Limit Switch
  • Sequence of Operation
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    Additional Resources
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