SUNSTAR SIS INFRARED NATURAL GAS TUBE HEATER - 50,000BTU - 20'

Whether you need to heat your warehouse, garage, or other hard-to-heat spaces, the Sunstar SIS/U Series infrared heaters provide both the fuel efficiency of radiant heat and the installation flexibility you need…all at a comfortable price.

Vacuum System

• Products of combustion are pulled through the combustion chamber for increased radiant efficiency and greater safety
• No draft hoods, totally enclosed combustion chamber
• Heavy duty draft inducer assembly with permanently lubricated, totally enclosed, and heavy-duty ball bearing motor for maintenance-free operation
• 30-second per-purge period before ignition
• Diaphragm air switch for proof of venting before gas flow and ignition

Radiant Emitter Tube System

• 4” O. D. heat-treated aluminized steel combustion chamber (10’ length)
• Standard highly emissive radiant tubes (10’ lengths)
• Optional aluminized steel radiant tubes (Tough Guy Option)
• 5-year limited warranty on all tubes
• Suitable for horizontal or angle mounting up to 45°
• Up to 75 feet sidewall vent capability

Burner System

• Heavy-duty cast iron burner
• Reliable direct spark ignition system and 100%
• Gas Shut-Off Safety Control
• Burner inspection sight glass
• Step-opening redundant combination gas valve for quiet ignition and added safety
• Inside or outside air for combustion
• Up to 50 ft. outside combustion air capability
• Diagnostic Monitoring Light System

Reflector System

• Highly efficient aluminum reflectors
• Individual reflectors can be rotated up to 45° to direct heat where needed
• Optional end, corner, U-bend, and side extension reflectors