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.MODELSBLP155ATSBLP155AT150,000 Btu/Hr withBuilt-in ThermostatPROPANE CONSTRUCTIONFORCED AIR HEATEROWNER’S MANUALSave this manual for future reference.Save this manual for future reference.For more information, visit www.desatech.comFor more information, visit www.desatech.comGENERAL HAZARD WARNING:FAILURE TO COMPLY WITH THE PRECAUTIONS AND INSTRUCTIONS PROVIDED WITH THISHEATER, CAN RESULT IN DEATH, SERIOUS BODILY INJURY AND PROPERTY LOSS ORDAMAGE FROM HAZARDS OF FIRE, EXPLOSION, BURN, ASPHYXIATION, CARBON MONOX-IDE POISONING, AND/OR ELECTRICAL SHOCK.ONLY PERSONS WHO CAN UNDERSTAND AND FOLLOW THE INSTRUCTIONS SHOULD USEOR SERVICE THIS HEATER.IF YOU NEED ASSISTANCE OR HEATER INFORMATION SUCH AS AN INSTRUCTIONSMANUAL, LABELS, ETC. CONTACT THE MANUFACTURER.TABLE OF CONTENTSSAFETY INFORMATION ............................................................ 2PRODUCT IDENTIFICATION ..................................................... 3UNPACKING ............................................................................... 3THEORY OF OPERATION ......................................................... 3PROPANE SUPPLY .................................................................... 4INSTALLATION ........................................................................... 4VENTILATION ............................................................................. 5OPERATION ............................................................................... 5STORAGE ................................................................................... 5MAINTENANCE .......................................................................... 5SERVICE PROCEDURES .......................................................... 6SPECIFICATIONS ...................................................................... 7WIRING DIAGRAMS ................................................................... 7ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ......... 8ACCESSORIES ........................................................................ 10TECHNICAL SERVICE ............................................................. 10REPLACEMENT PARTS .......................................................... 10OWNER'S REGISTRATION ...................................................... 11WARRANTY INFORMATION ...................................... Back Cover