TriMax High Efficiency Modulating Gas Boiler 95% - 399,000 BTU

TriMax High Efficiency Modulating Gas Boiler 95% - 399,000 BTU

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Availability: In stock

Model #: SOLO-PT399
Brand : Triangle Tube

Availability: In stock


  • 399,000 BTU

  • 7 Gal. Capacity

  • 95.1% AFUE Efficiency

  • Wall Mounted

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  • Literature

The Triangle Tube Prestige family of boilers offers all the benefits of the new generation of high-efficiency, modulating, condensing boilers along with easy installation, low maintenance and high reliability. With models rated at 60, 110, 175, 250 and 399 KBTU input, the Prestige family covers a broad range of heat load requirements. When paired with an indirect water heater, these boilers can heat your house and provide all the domestic hot water you will need.

The unique TriMax Control makes installation use fast and easy with 60 second easy set-up. The TriMax allows for multiple circulators and temperatrue zones and has an integrated cascade feature to join mutiple boilers.


It's the heat exchanger that makes it different from everyone else!

  • No O-ring to wear out/fail
  • Higher water content:
  • reduced hotspots/over heating risk
  • lowers sensitivity to water flow variation
  • easier temperature control
  • Vertical alignment and baffle system is self cleaning:
  • Reduces sludge build-up, lowers maintenance
  • Maintains efficiency over time
  • Low pressure drop means less head pressure, smaller pump requirements and/or more flow

Other great benefits

  • Factory tested
  • Limited 10 year warranty
  • Outdoor temperature sensor
  • Stainless steel heat exchanger
  • Stainless steel burner
  • Negative pressure gas valve
  • 30 psi relief valve
  • Drain valve
  • Pressure gauge
  • Condensate drain assembly
  • 24 V terminal strip with removable jumpers for manual reset or automatic reset of external controls
  • NTC temperature sensors on the boiler supply/return and flue

Must use wall frame kit.

Additional Information

Brand Triangle Tube
Heating Type Hot Water
Mounting Type Wall Mounted
Energy Star Rated No
Warranty 10 Year Non-Prorated Heat Exchanger warranty administrated by