2-Stage Stainless Gas Radiant Tube Heater (SMT)

Product Announcement from Solaronics, Inc.

2-Stage Stainless Gas Radiant Tube Heater (SMT)-Image

Solaronics True Dual Stainless Steel Two-Stage Gas Infrared Radiant Tube Heaters provide precise air to gas ratios at both the high- and low-heat stages for optimum efficiency. Excessive overheating is prevented and a softer, more stable and comfortable environment is maintained. Can save up to 75% in energy costs over conventional warm air systems, and typically save 10-15% over a single-stage tube heater.

True Dual Stainless Steel heaters use 304L stainless steel combustion chamber and heat exchangers to resist wet, humid and corrosive environments. Models available with high-stage gas inputs from 85,000 to 200,000 BTU/hour and radiant tube lengths from 20 to 70 feet. The two-stage gas valve provides a 30 percent differential between the high and the low stage. Heater controls are isolated from combustion air for their protection.

Infrared radiant heat is absorbed by the floor and other objects in view of the heater's heat exchanger, and is not absorbed by the air. This allows use of a lower thermostat setting yet increases personal comfort when compared with forced air heat so that money is saved on the heating bill. The energy efficiency of these heaters makes them a good choice for a green building.

True Dual Stainless Steel heaters energy efficiency, safety, and durability make them an excellent choice for heating commercial, industrial and agricultural buildings where environments are wet, humid and corrosive.


  • Car Washes
  • Chemical Plants
  • Exposed Loading Docks
  • Sports Arenas
  • Green Houses
  • Ice Skating Rinks
  • Manufacturing Plants
  • Plating Facilities
  • Restaurant Patios
  • Truck Washes
  • Zoos

Product Line Features

  • Two-stage operation with both gas and air modulated for high- and low-heat
  • 16 gauge 304L stainless-steel combustion tube and heat exchangers
  • Stainless-steel reflectors, tube clamps, and burner box
  • Blower fully enclosed
  • Simple chain mounting
  • CSA International Design Certified to ANSI/CGA Standards
  • Bright aluminum reflectors:
    • 98% reflectivity
    • 91.7% reflectional efficiency (shape)
    • Rotatable reflector arrangements from 0° to 45°
    • Each reflector rotates independently
  • Burner fully assembled and tested – ready to hang
  • Factory installed wave turbulator for high efficiency
  • Safe, reliable operation:
    • Durable direct spark ignition
    • 100% safety shut-off
    • Pre and Post-purge cycle for safety
    • System validation light

System Information

  • Manifold Operating Pressure
    • Natural Gas and LP/Propane: 5 inches WC
  • Minimum Inlet Pressure
    • Natural Gas: 7 inches WC
    • LP/Propane: 11 inches WC
  • Maximum Inlet Pressure
    • Natural Gas and LP/Propane: 14 inches WC
    • 1/2 inch FPT Gas Inlet
  • Electrical Rating
    • 120 VAC – 60 Hz – 1 Phase
    • 1.30 max. amp. draw at 138 cfm/free air
  • Warranty
    • 10 year limited warranty on Burner Core
    • 5 year limited warranty on All Combustion and Heat Exchanger tubes
    • 1 year limited warranty on All Burner Controls


  • Recessed Ceiling Kit
  • Side Reflector
  • 90° Elbow with reflector
  • "U"-Bend with reflector
  • Common Vent Couplers
  • Inlet and Exhaust Kits
  • Available with 12 gauge black steel heat exchangers as model MTS
  • Available with aluminized steel heat exchangers as model MTSA