HL3-20-65


  • Gas: Natural or propane 
  • BTU/h high fire: 65,000 
  • BTU/h low fire: 50,000 
  • Length: 21’-9” 
  • Weight: 120 lbs 
  • Combustion chamber: aluminized steel  
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 9’ to 14'

HL3-20-75


  • Gas: Natural or propane 
  • BTU/h high fire: 75,000 
  • BTU/h low fire: 50,000 
  • Length: 21’-9” 
  • Weight: 120 lbs 
  • Combustion chamber: aluminized steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 10’ to 15’

HL3-30-65


  • Gas: Natural or propane 
  • BTU/h high fire: 65,000 
  • BTU/h low fire: 50,000 
  • Length: 30’-5” 
  • Weight: 160 lbs 
  • Combustion chamber: aluminized steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 10’ to 15’

HL3-30-75


  • Gas: Natural or propane 
  • BTU/h high fire: 75,000 
  • BTU/h low fire: 50,000 
  • Length: 31’-5” 
  • Weight: 160 lbs 
  • Combustion chamber: aluminized steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 11’ to 18’

HL3-30-100


  • Gas: Natural or propane 
  • BTU/h high fire: 100,000 
  • BTU/h low fire: 65,000 
  • Length: 31’-5” 
  • Weight: 120 lbs 
  • Combustion chamber: aluminized steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 12’ to 20’

HL3-30-125


  • Gas: Natural or propane 
  • BTU/h high fire: 125,000 
  • BTU/h low fire: 82,000 
  • Length: 31’-5” 
  • Weight: 120 lbs 
  • Combustion chamber: aluminized steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 13’ to 23’

HL3-40-65


  • Gas: Natural or propane 
  • BTU/h high fire: 65,000 
  • BTU/h low fire: 50,000 
  • Length: 41’-1” 
  • Weight: 190 lbs 
  • Combustion chamber: aluminized steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 11’ to 18’ 

HL3-40-75


  • Gas: Natural or propane 
  • BTU/h high fire: 75,000 
  • BTU/h low fire: 50,000 
  • Length: 41’-1” 
  • Weight: 190 lbs 
  • Combustion chamber: aluminized steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 11’ to 18’

HL3-40-100


  • Gas: Natural or propane 
  • BTU/h high fire: 100,000 
  • BTU/h low fire: 65,000 
  • Length: 41’-1” 
  • Weight: 190 lbs 
  • Combustion chamber: aluminized steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 12’ to 20’

HL3-40-125


  • Gas: Natural or propane 
  • BTU/h high fire: 125,000 
  • BTU/h low fire: 82,000 
  • Length: 41’-1” 
  • Weight: 190 lbs 
  • Combustion chamber: aluminized steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 13’ to 23’

HL3-40-150


  • Gas: Natural or propane 
  • BTU/h high fire: 150,000 
  • BTU/h low fire: 100,000 
  • Length: 41’-1” 
  • Weight: 190 lbs 
  • Combustion chamber: titanium coated steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 14’ to 25’

HL3-40-175


  • Gas: Natural or propane 
  • BTU/h high fire: 175,000 
  • BTU/h low fire: 125,000 
  • Length: 41’-1” 
  • Weight: 190 lbs 
  • Combustion chamber: titanium coated steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 15’ to 27’

HL3-50-125


  • Gas: Natural or propane 
  • BTU/h high fire: 125,000 
  • BTU/h low fire: 82,000 
  • Length: 50’-9” 
  • Weight: 235 lbs 
  • Combustion chamber: aluminized steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 15’ to 27’

HL3-50-150


  • Gas: Natural or propane 
  • BTU/h high fire: 150,000 
  • BTU/h low fire: 100,000 
  • Length: 50’-9” 
  • Weight: 235 lbs 
  • Combustion chamber: titanium coated steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 15’ to 27’

HL3-50-175


  • Gas: Natural or propane 
  • BTU/h high fire: 175,000 
  • BTU/h low fire: 125,000 
  • Length: 50’-9” 
  • Weight: 235 lbs 
  • Combustion chamber: titanium coated steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 16’ to 30’

HL3-50-200


  • Gas: Natural or propane 
  • BTU/h high fire: 200,000 
  • BTU/h low fire: 145,000 
  • Length: 50’-9” 
  • Weight: 235 lbs 
  • Combustion chamber: titanium coated steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 17’ to 35’

HL3-60-150


  • Gas: Natural or propane 
  • BTU/h high fire: 150,000 
  • BTU/h low fire: 100,000 
  • Length: 60’-5” 
  • Weight: 265 lbs 
  • Combustion chamber: titanium coated steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 16’ to 30’

HL3-60-175


  • Gas: Natural or propane 
  • BTU/h high fire: 175,000 
  • BTU/h low fire: 125,000 
  • Length: 60’-5” 
  • Weight: 265 lbs 
  • Combustion chamber: titanium coated steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 16’ to 30’

HL3-60-200


  • Gas: Natural or propane 
  • BTU/h high fire: 200,000 
  • BTU/h low fire: 145,000 
  • Length: 60’-5” 
  • Weight: 265 lbs 
  • Combustion chamber: titanium coated steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 17’ to 35’

HL3-70-175


  • Gas: Natural or propane 
  • BTU/h high fire: 175,000 
  • BTU/h low fire: 125,000 
  • Length: 70’-1” 
  • Weight: 300 lbs 
  • Combustion chamber: titanium coated steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 19’ to 42’

HL3-70-200


  • Gas: Natural or propane 
  • BTU/h high fire: 200,000 
  • BTU/h low fire: 145,000 
  • Length: 70’-1” 
  • Weight: 300 lbs 
  • Combustion chamber: titanium coated steel   
  • Radiant emitter tubes:  16 ga. 4” aluminized steel
  • *Mounting heights: 19’ to 42’

 * 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

HL3-(20, 30, 40)-65, 75


Mount
angle
Sides Top,
Below

9" Top 6"
Below 60"
45°
Front 39"
Back 8"
Top 10"
Below 60"

1 side shield
Front 29"
Back 8"
Top 6"
Below 60"

2 side shields
9"Top 6"
Below 60"

20 ft
from burner
7"Top 6"
Below 30"

HL3-(30, 40)-100


Mount
angle
Sides Top,
Below

14" Top 6"
Below 66"
45°
Front 39"
Back 8"
Top 10"
Below 66"

1 side shield
Front 29"
Back 8"
Top 6"
Below 66"

2 side shields
16"Top 6"
Below 66"

20 ft
from burner
7"Top 6"
Below 30"

HL3-(30, 40, 50)-125


Mount
angle
Sides Top,
Below

20" Top 6"
Below 76"
45°
Front 58"
Back 8"
Top 10"
Below 76"

1 side shield
Front 42"
Back 8"
Top 6"
Below 76"

2 side shields
20"Top 6"
Below 76"

20 ft
from burner
7"Top 6"
Below 30"

HL3-(40, 50, 60)-150


Mount
angle
Sides Top,
Below

24" Top 6"
Below 81"
45°
Front 58"
Back 8"
Top 10"
Below 81"

1 side shield
Front 42"
Back 8"
Top 6"
Below 81"

2 side shields
23"Top 6"
Below 81"

20 ft
from burner
11"Top 6"
Below 44"

HL3-(30, 40, 50, 70)-175


Mount
angle
Sides Top,
Below

34" Top 6"
Below 92"
45°
Front 63"
Back 8"
Top 10"
Below 92"

1 side shield
Front 50"
Back 8"
Top 6"
Below 92"

2 side shields
30"Top 6"
Below 92"

20 ft
from burner
11"Top 6"
Below 44"

HL3-(50, 60, 70)-200


Mount
angle
Sides Top,
Below

41" Top 6"
Below 94"
45°
Front 63"
Back 8"
Top 10"
Below 94"

1 side shield
Front 54"
Back 8"
Top 6"
Below 94"

2 side shields
30"Top 6"
Below 94"

20 ft
from burner
11"Top 6"
Below 44"

Clearances published in HL3 Series manual and on warning label supersede data shown on this webpage. Reference HL3 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.