
Heaters can be common vented, vented or indirect vented. Note: Consult Factory if reduced clearances are required VENTING REQUIREMENTS ** Maximum clearance below reduces by 50% once you are 25ft. * When used indirect vented, clearance to CEILING must be: 12″ for LTU(40-75) and 18″ for LTU(80-250) In locations used for storage of combustible materials where they may be stacked below the heater, NFPA 54 requires that the installer must post signs that will “specify the maximum permissible stacking height to maintain the required clearances from the heater to combustibles”. Clearances to combustibles are posted on the reflector near the control end of the heater. NOTE:The clearances specified above must be maintained to combustibles and other materials that may be damaged by temperatures 90☏ above ambient temperature. ** Hanging weight is 80% of shipping weight
CSA Certified according to ANSI Z83.20 and CSA 2.34. Optional decorative grille kit for drop ceiling applications. Optional deflector kit for reduced clearances to combustible materials. CSA approved for direct vented or indirect vented operation. Quick 115 volt terminal block connection. 3 Monitoring light system for on line diagnosis- power on, insufficient air flow, and ignition sytem operation. Suitable for horizontal or angle mount up to 45 degrees. Reflector ends are enclosed for maximum radiant heat output and minimum convection loss. Highly efficient aluminum reflectors with reflectivity rating of 97%. Fully factory pre-assembled on tube body to minimize field filed assembly and save installation labor cost. 5 year limited warranty on the emitter tube. The calorization process (PDF)produces an emitter tube which is highly radiant absorptive on the interior and highly radiant emissive on the exterior. Titanium alloy Alumi-Therm and aluminized steel emitter tubes are calorized for long life and high radiant efficiency. Body assembly for some models is 15′ long other models require the use of additional 5′ and 10′ body packages. All radiant emitter tubes are 16 gauge calorized steel - 3″ for LTU40-LTU75 and 4″ for LTU80-LTU250. 36″ Stainless Steel flexible gas connector included with control box. Spark ignition system with 100% Gas Shut-Off Safety Control (30 second pre-purge). Diaphragm Air Proving Switch - a safety device for proof of venting before gas flow and ignition. State-of-the-art step opening combination gas valve for quiet ignition. standard fresh air inlet duct opening for LTU40-LTU75 6″ for LTU80-LTU250 Inside or optional outside air for combustion. One piece cast iron burner with stainless steel flame retainer. No draft hoods, totally enclosed combustion chamber. Draft inducer assembly can be used for through- the-roof-venting or rotated 45 degrees or 90 degrees for horizontal venting. #RADIANT TUBE HEATER FREE#
Draft inducer is equipped with permanently lubricated, totally enclosed, fan cooled and heavy duty ball bearing motor for maintenance free operation.flue connection for LTU40-LTU175 6″ for LTU180-LTU250 CSA certified for vertical or horizontal venting.
Pull-through system - the products of combustion are pulled through the combustion chamber for increased radiant efficiency and greater safety.Pull-Through System (negative pressure or vacuum)