DTH Series

alt   BR 0580

DTH 100



The new DTH series has been designed with OEM requirements in mind. It is available in listed and recognized versions for flexible integration into air handlers. The series is certified for both indoor or outdoor applications and features our new high turndown and factory-adjusted burner for easy startup and reliable operation.

Please click here to see the advantages.

The DTH is a listed component and the DTHR is a recognized
component for installation in the US and Canada.
 Intertek ETL Listed C US




  • Two-pass heat exchanger
  • 409 HP stainless steel heat exchanger
  • Free-floating design
  • Drain for condensate removal
  • Galvanized steel cabinet and 2" high temperature insulation
  • Galvanized formed support frame
  • Removable lifting lungs


  • Thermal efficiency: 80% to 87%
  • Ten sizes from 350 to 1 500 MBH output
  • Airflow capacity: 2 160 to 27 777 CFM
  • High turndown ratios: up to 30:1

Optional Features

  • FM or IRI gas train available
  • 304 SS or 316 SS heat exchanger
  • Stainless steel cabinet
  • Variable air-volume controller
  • Epoxy or enamel paint
  • Gas train and control enclosure
  • Weatherproof construction
  • Heated control box
  • Natural or propane gas


  • Fresh air compensation
  • Industrial and commercial warm air heating systems
  • Low temperature industrial processes


alt The heat exchanger is a two-pass drum and tube type with the choice of 409 HP, 304L or 316L stainless steel. Efficiency is at least 80% and can be as high as 87% at low fire.
The new high turndown burner design offers turndowns up to 30:1 and features a cast aluminum fan and burner head with stainless steel baffles for corrosion-free operation.

Firing rate is controlled by a PLC that drives and analyzes valve position, fan speed, and pressure from low to high fire, ensuring clean and efficient combustion.