PTS/PTU Series Tube Heaters from Space-Ray are designed for retrofitting existing push through systems and are certified for vented (sidewall or through the roof venting) or indirect vented operations. They come in natural gas or propane versions and use positive pressure to push products of combustion through a heavy-duty aluminized steel combustion chamber. A low voltage circuit continuously monitors the clearance between the reflector and ceiling for excessive heat. Excessive heat will melt the wire, shutting down the controls before a fire occurs.
