www.desatech.com116557-01A 3200,000BTU/HRSAFETY INFORMATIONContinuedOuterShellIgnitorButtonBall ValveControl KnobButtonFigure 1 - 200,000 Btu Model Shown15. Check hose before each use of heater. If highlyworn or cut, replace with hose specified bymanufacturer before using heater.16. Do not alter heater. Keep heater in its originalstate.17. Do not use heater if altered.18. Locate heater on stable and level surface ifheater is hot or operating.19. Not intended for use on finished floors.20. Never block air inlet (bottom of shell) or airoutlet (around top of shell) of heater.21. Do not leave heater unattended.22. Keep children and animals away fromheater.23. Never move, handle or service a hot or operat-ing heater. Severe burns may result. You mustwait 15 minutes after turning heater off.24. To prevent injury, wear gloves when handlingheater.25. Never attach duct work to heater.26. Turn off propane supply to heater when notin use.27. Use only original replacement parts. Thisheater must use design-specific parts. Donot substitute or use generic parts. Improperreplacement parts could cause serious or fatalinjuries.UNPACKING1. Remove all packing items applied to heater forshipment. Keep plastic cover caps (attached toinlet connector and hose/regulator assembly)for storage.2. Remove all items from carton.3. Check all items for shipping damage. If heateris damaged, promptly inform dealer where youbought heater.THEORY OF OPERATIONThe Fuel System: The hose/regulator assemblyattaches to the propane gas supply. This providesfuel to the heater.The Ignition System: The piezo ignitor lightsthe pilot.The Automatic Control System: This system causesthe heater to shut down if the flame goes out.PRODUCTIDENTIFICATIONVENTILATIONWARNING: Provide at leasta 2.5 square foot (0.23 m 2 )opening of fresh, outside airwhile running heater. If properfresh, outside air ventilation isnot provided, carbon monoxidepoisoning can occur. Provideproper fresh, outside air ventila-tion before running heater.ValveInletSafety Pilot Valve