Thermostat ControlModulatingModulating
Maximum Btu/hr:4,200,0004,200,000
Minimun Btu/Hr21,00021,000
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:2,100 CFH Lo-Fire - 4,200 CFH Hi-Fire2,100 CFH Lo-Fire - 4,200 CFH Hi-Fire
Propane Consumption:22.9 GPH / 45.9 GPH22.9 GPH / 45.9 GPH
Pressure Range1 - 10 lbs.1 - 10 lbs.
Temperature Control DischargeYesYes
Air Proving Safety:YesYes
Flame Sensing SafetyYesYes
Net Weight5,200 lbs.5,200 lbs.
Data SheetDF-21 Data SheetDF-21 Data Sheet
NEMA Plug Configuration:N/AN/A
High Limit DischargeYesYes
Dimensions:90" x 186" x 95"90" x 186" x 95"