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Industry Recognized Heating Equipment • salesinfo@tioga-inc.com

Call Us! (800) 218-4642

Model DF-21

DF-21 - Direct Fired Heaters

  DF-21-32 DF-21-34
Thermostat Control: Modulating Modulating
Btu/Hr: 4,200,000 4,200,000
Maximum Btu/hr: 4,200,000 4,200,000
Minimun Btu/Hr: 21,000 21,000
CFM: 25,000 25,000
Max. External Static Pressure: Up to 3" ESP / 32" Round Collar Up to 3" ESP / 32" Round Collar
Fan Type: Backward Inclined Blower Backward Inclined Blower
Discharge Diameter: 32" 32"
Voltage: 3 Phase, 208 Volt 3 Phase, 480 Volt
Current Consumption: 50 amps 25 amps
Recommended Fuse Size: 100 amps 50 amps
Fuel Type: NG or Vapor Propane NG or Vapor Propane
Natural Gas Consumption: 2,100 CFH Lo-Fire - 4,200 CFH Hi-Fire 2,100 CFH Lo-Fire - 4,200 CFH Hi-Fire
Propane Consumption: 22.9 GPH / 45.9 GPH 22.9 GPH / 45.9 GPH
Pressure Range: 1 - 10 lbs. 1 - 10 lbs.
Temperature Control Discharge: Yes Yes
Air Proving Safety: Yes Yes
Flame Sensing Safety: Yes Yes
Net Weight: 5,200 lbs. 5,200 lbs.
Data Sheet: DF-21 Data Sheet DF-21 Data Sheet
NEMA Plug Configuration: N/A N/A
High Limit Discharge: Yes Yes
Dimensions: 90" x 186" x 95" 90" x 186" x 95"

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