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Capacity: 7 - 48 HP

Fuel Capabilities: #2 Oil, Hydrogen, Natural Gas, Propane

Tube Type: Smooth Tubes with Turbulators

Hot Water Design Pressure: 30 - 125 psig


General Description

The Hot Water Triad is a complete UL listed package that is a ready-to-install system featuring a perfectly matched powerful and efficient burner/boiler combination. Hot Water Triads can be configured for Space Heat, Domestic Hot Water, or Combination Applications. Combination applications are ready-to-install packaged systems that provide Domestic Hot Water and Space Heating from one vessel.


  • Manufactured to exceed ASME Section IV standards
  • Typically is used to provide supply temperatures from the coil of between 140-180°F, yet can accept extremely low return temperatures (below 100°F) without shocking the boiler
  • Include vertical firetubes with a 2″ diameter, 12 gauge steel and fitted with a high-efficiency turbulator for maximum heat transfer.
  • The combustion chamber is fully water-backed, with burners that are UL listed.


  • Standard features include nationally known parts and controls that are quickly available at most supply houses, allowing for easy quick and easy repair and maintenance, which can dramatically reduce down time.
  • Main and Auxiliary Gas Valves
  • Air Flow Switch
  • Flame Safeguard
  • Manual Main, Leak Test, and Pilot Gas Shutoff Valves
  • Bell and Gossett Circulating Pump
  • Honeywell Aquastat Relay
  • Automatic Low Water Cutoff
  • Honeywell Second High-Limit With Manual Reset
  • Burner Control Relay
  • High Visibility Operating Light
  • Pressure/Temperature Gauge
  • Pressure Relief Valve
  • 2″ Diameter Firetubes of SA178-A Steel
  • Rail Legs
  • Lifting Lugs
  • 1.5 Inches of Insulation With a Painted Steel Jacket
  • Choice of single or dual fuel burners from a variety of manufacturers
  • Spark Ignition System for Combination Fuel Burners
  • Low-High-Low and Modulating gas trains
  • CSD-1, IRI, FM Low-High-Low and Modulating Gas Trains with Motorized Valves
  • Fan-Damper relays
  • Louver Box for Sealed Combustion Side-Wall Venting
  • Barometric Dampers and Galvanized Tees
  • Extra Clean-out Openings and Plugs
  • Microprocessor Control Panel
  • Factory built Primary Mains and Headers
  • Immersion Aquastats
  • Various Relief Valve sizes for different applications


A well-made, rugged vessel is naturally a safer boiler. But Superior’s Hot Water Triads also have a firebox design that is completely backed by water, along with safety controls on the boiler that results in a very safe and secure package.

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