DES3 Series Models

DES3-20-50


  • Gas: Natural or propane  
  • BTU/h input: 50,000  
  • Length: 21'-8"  
  • Weight: 120 lbs   
  • *Mounting heights: 9'-14'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-20-60


  • Gas: Natural or propane  
  • BTU/h input: 60,000  
  • Length: 21'-8"  
  • Weight: 120 lbs   
  • *Mounting heights: 10'-15'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-20-75


  • Gas: Natural or propane  
  • BTU/h input: 75,000  
  • Length: 21'-8"  
  • Weight: 120 lbs   
  • *Mounting heights: 11'-18'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-30-50


  • Gas: Natural or propane  
  • BTU/h input: 50,000  
  • Length: 31'-4"  
  • Weight: 160 lbs   
  • *Mounting heights: 10'-15'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-30-60


  • Gas: Natural or propane  
  • BTU/h input: 60,000  
  • Length: 31'-4"  
  • Weight: 160 lbs   
  • *Mounting heights: 11'-18'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-30-75


  • Gas: Natural or propane  
  • BTU/h input: 75,000  
  • Length: 31'-4"  
  • Weight: 160 lbs    
  • *Mounting heights: 12'-20'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-30-100


  • Gas: Natural or propane  
  • BTU/h input: 100,000  
  • Length: 31'-4"  
  • Weight: 160 lbs   
  • *Mounting heights: 13'-23'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-30-125


  • Gas: Natural or propane  
  • BTU/h input: 125,000  
  • Length: 31'-4"  
  • Weight: 160 lbs   
  • *Mounting heights: 14'-25'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-40-50


  • Gas: Natural or propane  
  • BTU/h input: 50,000  
  • Length: 40'-0"  
  • Weight: 190 lbs   
  • *Mounting heights: 11'-18'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-40-60


  • Gas: Natural or propane  
  • BTU/h input: 60,000  
  • Length: 40'-0"  
  • Weight: 190 lbs   
  • *Mounting heights: 11'-18'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-40-75


  • Gas: Natural or propane  
  • BTU/h input: 75,000  
  • Length: 40'-0"  
  • Weight: 190 lbs   
  • *Mounting heights: 12'-20'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-40-100


  • Gas: Natural or propane  
  • BTU/h input: 100,000  
  • Length: 40'-0"  
  • Weight: 190 lbs   
  • *Mounting heights: 13'-23'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-40-125


  • Gas: Natural or propane  
  • BTU/h input: 125,000  
  • Length: 40'-0"  
  • Weight: 190 lbs   
  • *Mounting heights: 14'-25'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-40-150


  • Gas: Natural or propane  
  • BTU/h input: 150,000  
  • Length: 40'-0"  
  • Weight: 190 lbs   
  • *Mounting heights: 15'-27'  
  • Combustion chamber: 4” titanium stabilized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-40-175


  • Gas: Natural or propane  
  • BTU/h input: 175,000  
  • Length: 40'-0"  
  • Weight: 190 lbs   
  • *Mounting heights: 16'-30'  
  • Combustion chamber: 4” titanium stabilized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel

DES3-50-100


  • Gas: Natural or propane  
  • BTU/h input: 100,000  
  • Length: 50'-8"  
  • Weight: 235 lbs   
  • *Mounting heights: 15'-27'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-50-125


  • Gas: Natural or propane  
  • BTU/h input: 125,000  
  • Length: 50'-8"  
  • Weight: 235 lbs   
  • *Mounting heights: 15'-27'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-50-150


  • Gas: Natural or propane  
  • BTU/h input: 150,000  
  • Length: 50'-8"  
  • Weight: 235 lbs   
  • *Mounting heights: 16'-30'  
  • Combustion chamber: 4” titanium stabilized steel  
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-50-175


  • Gas: Natural or propane  
  • BTU/h input: 175,000  
  • Length: 50'-8"  
  • Weight: 235 lbs   
  • *Mounting heights: 17'-35'  
  • Combustion chamber: 4” titanium stabilized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-50-200


  • Gas: Natural or propane  
  • BTU/h input: 200,000  
  • Length: 50'-8"  
  • Weight: 235 lbs   
  • *Mounting heights: 18'-40'  
  • Combustion chamber: 4” titanium stabilized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-60-125


  • Gas: Natural or propane  
  • BTU/h input: 125,000  
  • Length: 60'-4"  
  • Weight: 265 lbs   
  • *Mounting heights: 17'-35'  
  • Combustion chamber: 4” aluminized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-60-150


  • Gas: Natural or propane  
  • BTU/h input: 150,000  
  • Length: 60'-4"  
  • Weight: 265 lbs   
  • *Mounting heights: 17'-35'  
  • Combustion chamber: 4” titanium stabilized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-60-175


  • Gas: Natural or propane  
  • BTU/h input: 175,000  
  • Length: 60'-4"  
  • Weight: 265 lbs   
  • *Mounting heights: 17'-35'  
  • Combustion chamber: 4” titanium stabilized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

DES3-60-200


  • Gas: Natural or propane  
  • BTU/h input: 200,000  
  • Length: 60'-4"  
  • Weight: 265 lbs   
  • *Mounting heights: 18'-40'  
  • Combustion chamber: 4” titanium stabilized steel 
  • Radiant emitter tubes: 16 ga. 4” O.D. hot-rolled steel 

 * Mounting heights are provided as a guideline. Actual conditions may dictate variations from the above data. Always maintain the published clearances to combustibles. Not for residential use. 

Clearance to combustibles 

DES3 (20, 30, 40)-50, 60


Mount
angle
 SidesTopBelow
0°
 9"6"47"
45°
Front 39"
Back 8"		10"47"
0°
1 side
shield		Front 29"
Back 8"
6"47"
0°
2 side
shields		9"6"47"
0°
20 ft from
burner		7"6"30"

DES3 (20, 30, 40)-75


Mount
angle
 SidesTopBelow
0°
 9"6"60"
45°
Front 39"
Back 8"		10"60"
0°
1 side
shield		Front 29"
Back 8"
6"60"
0°
2 side
shields		9"6"60"
0°
20 ft from
burner		7"6"30"

DES3 (30, 40, 50)-100


Mount
angle
 SidesTopBelow
0°
 14"6"66"
45°
Front 39"
Back 8"		10"66"
0°
1 side
shield		Front 29"
Back 8"
6"66"
0°
2 side
shields		16"6"66"
0°
20 ft from
burner		7"6"30"

DES3 (30, 40, 50, 60)-125


Mount
angle
 SidesTopBelow
0°
 20"6"76"
45°
Front 58"
Back 8"		10"76"
0°
1 side
shield		Front 42"
Back 8"
6"76"
0°
2 side
shields		20"6"76"
0°
20 ft from
burner		7"6"30"

DES3 (40, 50, 60)-150


Mount
angle
 SidesTopBelow
0°
 24"6"81"
45°
Front 58"
Back 8"		10"81"
0°
1 side
shield		Front 42"
Back 8"
6"81"
0°
2 side
shields		23"6"81"
0°
20 ft from
burner		11"6"44"

DES3 (40, 50, 60, 70)-175


Mount
angle
 SidesTopBelow
0°
 34"6"92"
45°
Front 63"
Back 8"		10"92"
0°
1 side
shield		Front 54"
Back 8"
6"92"
0°
2 side
shields		30"6"92"
0°
20 ft from
burner		11"6"44"

DES3 (50, 60, 70, 80)-200


Mount
angle
 SidesTopBelow
0°
 41"6"94"
45°
Front 63"
Back 8"		10"94"
0°
1 side
shield		Front 54"
Back 8"
6"94"
0°
2 side
shields		30"6"94"
0°
20 ft from
burner		11"6"44"

Clearances published in DES3 Series manual and on warning label supersede data shown on this page. Reference DES3 Series installation manual for complete information.

Heaters mounted on an angle between 0º and 45º must maintain clearances posted for 0º or 45º, whichever is greater.