SunStar SPU Compressed Natural Gas Tough Guy Positive Pressure 20' Single Stage 40K BTU U-Tube Heater

Features:

Push-Through System

• Products of combustion are pushed through the combustion chamber
• No draft hoods, totally enclosed combustion chamber
• Blower motor totally enclosed in the burner box. Ideal for applications where minimal noise (less than 60 dB) is desired.
• Heavy duty permanently lubricated ball bearing, totally enclosed motor for maintenance-free operation
• 30 second pre-purge before ignition and 30 second post-purge after thermostat is satisfied
• Diaphragm air switch for proof of venting before gas flow and ignition

Burner System

• Heavy duty cast iron burner
• Reliable direct spark ignition systems 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 25 ft. outside combustion air capability
• Standard outside combustion air intake
• Diagnostic Monitoring Light System

Gas Shut-Off Safety Control

• Burner inspection sight glass
• Step-opening redundant combination gas valve for quite ignition and added safety
• Inside or outside air for combustion
• Up to 25 ft. outside combustion air capability
• Standard outside combustion air intake
• 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

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 25 feet sidewall vent capability

Introducing TISS™ Tube Integrity Safety Shut-Off System

• SunStar’s patent pending innovative safety feature for positive pressure radiant tube heaters is called the “Tube Integrity Safety System” (TISS™).
• In the unlikely event of a tube failure, TISS™ has been designed to automatically shut off the heater. The revolutionary TISS™ uses a simple principle to place an electrically insulated aluminum wire in tension above the reflector. Low voltage is then continuously passed along the wire in line with the gas control circuit. If heat levels increase due to heat exchanger failure, the wire melts and the safety circuit is broken, breaking the 24 volt circuit and shutting down the heater.
• You may never know it is there, but it provides peace of mind.

Manuals:

• SPU Spec Sheet
• SPU Installation and Operation Instructions
• Accessories

Need assistance? Talk to an expert at +1-800-923-4556 or email support@flameauthority.com to get the best-suited heater for your needs.

Specifications:

• Model: 
• SPU4020TGCNG
• Total Tube Length:
• 20'
• Overall Dimensions "L" (FT):
• 12' 9"
• Input BTU/HR:
• 40,000
• Total Emitter Length:
• 20 ft.
• Fuel Type:
• Natural Gas
• Liquid Propane
• Burner Pressure:
• 3.5" W.C.
• 10" W.C.
• Supply Pressure:
• Min. 5" W.C. Max. 14" W.C.
• Min. 11" W.C., Max. 14" W.C.
• Voltage:
• 120 VAC 60 Hz
• Amps:
• 2.4
• Ignition Type:
• Direct Spark

SPU Dimensions Chart

SPU Minimum Mounting Heights

• Height at Horizontal: 10'
• Height at 45° Angle: 9'

SPU Clearance to Combustibles

• Model: SPS 40
• Side: 22"
• Ceiling*: 6"
• Below: 52"
• End: 15"
• (45°) Front: 40"
• (45°) Rear: 12"

* When used indirect vented, minimum clearance for Ceiling must be: 12″ for SPU 40-75, and 18″ for SPU 100-200. If optional corner and u-bend reflectors are not used, the clearance must be 18″.

** Maximum clearance below reduces by 50% once you are 25ft. downstream from the burner box.