Direct Fired Heater

Thermostat ControlModulatingModulating
Maximum Btu/hr:4,500,0004,500,000
Minimun Btu/Hr1,350,0001,350,000
Max. External Static PressureUp to 3" ESP / 32" Round CollarUp to 3" ESP / 32" Round Collar
Fan Type:Backward Inclined BlowerBackward Inclined Blower
Discharge Diameter:32"32"
Voltage:3 Phase, 208 Volt3 Phase, 480 Volt
Current Consumption:50 amps25 amps
Recommended Fuse Size:100 amps50 amps
Fuel TypeNG or Vapor PropaneNG or Vapor Propane
Natural Gas Consumption:1,350 CFH Lo-Fire - 4,500 CFH Hi-Fire1,350 CFH Lo-Fire - 4,500 CFH Hi-Fire
Propane Consumption:14.7 GPH / 49.1 GPH14.7 GPH / 49.1 GPH
Pressure Range1 - 10 lbs.1 - 10 lbs.
Temperature Control DischargeYesYes
Air Proving Safety:YesYes
Flame Sensing SafetyYesYes
Net Weight5,500 lbs.5,500 lbs.
Data SheetDF-25 Data SheetDF-25 Data Sheet
NEMA Plug Configuration:N/AN/A
High Limit DischargeYesYes
Dimensions:91" x 192" x 88"91" x 192" x 88"