IMPORTANT: Read and understand this manual before assembling, starting or servicingheater. Improper use of heater can cause serious injury. Keep this manual for future reference.Heater Sizes: 40,000 55,000 60,000 70,000 110,000 115,000150,000 155,000 165,000 and 200,000 Btu/Hr ModelsH.S.I. SeriesPORTABLE FORCEDAIR HEATERSOWNER’S MANUALTABLE OF CONTENTSSAFETY INFORMATION ............................................................ 2PRODUCT IDENTIFICATION ..................................................... 3UNPACKING ............................................................................... 3THEORY OF OPERATION ......................................................... 4FUELS ......................................................................................... 4VENTILATION ............................................................................. 4ASSEMBLY ................................................................................. 5OPERATION ............................................................................... 5OPERATION WITH PORTABLE GENERATOR .......................... 6PREVENTATIVE MAINTENANCE SCHEDULE ......................... 6STORING, TRANSPORTING, OR SHIPPING ............................ 6TROUBLESHOOTING ................................................................ 7SERVICE PROCEDURES .......................................................... 8TECHNICAL SERVICE ............................................................. 15REPLACEMENT PARTS .......................................................... 15SPECIFICATIONS .................................................................... 16WIRING DIAGRAMS ................................................................. 16ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ....... 18WHEELS AND HANDLES ........................................................ 24ACCESSORIES ........................................................................ 25WARRANTY AND REPAIR SERVICE ...................................... 26®Save this manual for future reference.Save this manual for future reference.For more information, visit www.desatech.comFor more information, visit www.desatech.comFill In For Your RecordsModel No. ___________________(Located on side panel)Serial No. ___________________(Located on fuel tank)Date of Purchase: ______________TM