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Your local authorities can advise you about these. Carbon Monoxide Poisoning: Some people are more affected by carbon monoxide than others. Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, and/or nausea. If you have these signs, the heater may not be working properly. Get fresh air at once! Have heater serviced. Propane Gas: Propane gas is odorless. An odor-making agent is added to propane gas. The odor helps you detect a propane gas leak. However, the odor added to propane gas can fade. Propane gas may be present even though no odor exists. Make certain you read and understand all Warnings. Keep this manual for reference. It is your guide to safe and proper operation of this heater. • Install and use heater with care. Follow all local ordinances and codes. In the absence of local ordinances and codes, refer to the Standard for Storage and Handling of Liquefied Petroleum Gas, ANSI/NFPA 58 and the Propane Installation Code, CAN/CGA B149.2. This instructs on the safe storage and handling of propane gases. • Use only the electrical voltage and frequency specified on model plate. The electrical connections and grounding of the heater shall follow the National Electric Code, ANSI/NFPA 70 or the Canadian Electric Code, Part 1. • Electrical grounding instructions — This appliance is equipped with a three-prong (grounding) plug for your protection against shock hazard and should be plugged directly into a properly grounded three-prong receptacle or extension cord. • Approved by the New York City Fire Department under certificate of Approval #4953. To be used only at construction site with applicable New York City codes, regulations, rules, directives, permits, etc. • This product has been approved for use in the Commonwealth of Massachusetts. • For indoor use only. Provide adequate ventilation. • Keep heater away from strong drafts, wind, water spray, rain, or dripping water. • Use only in well-vented areas. Before using heater, provide at least a threesquare- foot opening of fresh, outside air for each 100,000 Btu/Hr of rating. This heater produces carbon monoxide, which is listed by the State of California as a reproductive toxin under Proposition 65. • Do not use heater outdoors or in occupied dwellings. • Do not use heater in living or sleeping quarters. • Keep appliance area clear and free from combustible materials, gasoline, paint thinner, and other flammable vapors and liquids. Dust is combustible. Do not use heater in areas with high dust content. • Check heater for damage before each use. Do not use a damaged heater. • Use only propane gas set up for vapor withdrawal. • Keep propane tank(s) below 100° F. • Do not use heater in a basement or below ground level. Propane gas is heavier than air. If a leak occurs, propane gas will sink to the lowest possible level. • Use only the hose and factory regulator provided with the heater. • Check hose before each use of heater. If highly worn or cut, replace with hose specified by manufacturer before using heater. • Do not alter heater. Keep heater in its original state. • Do not use heater if altered. • Keep heater at least six feet from propane tank(s). Do not point heater at propane tank(s) within 20 feet. • Minimum heater clearances from combustibles: Outlet: 8 Ft. Sides: 2 Ft. Top: 6 Ft. Rear: 2 Ft. • Locate heater on stable and level surface if heater is hot or running. • Keep children and animals away from heater. • Turn off propane supply and unplug heater when not in use. • Never block air inlet (rear) or air outlet (front) of heater. • Never move, handle, or service a hot, operating, or plugged-in heater. • Never attach duct work to front or rear of heater. • Use only original replacement parts. This heater must use design-specific parts. Do not substitute or use generic parts. Improper replacement parts could cause serious or fatal injuries. • Do not adjust regulator below 7 psig or above 20 psig. 2 OWNER’S MANUAL PRODUCT UNPACKING IDENTIFICATION 1. Remove all packing items applied to heater for shipment. Keep plastic cover caps (attached to inlet connector and hose/regulator assembly) for storage. 2. Remove all items from carton. 3. Check all items for shipping damage. If heater is damaged, promptly inform dealer where you bought heater. Fan Guard Power CordInlet Connector On/Off Switch Handle Outer Shell Hose /Regulator Assembly Hot Air Outlet (Front) Figure 1 - 375,000 Btu/Hr Models 3 375,000 BTU/HR - A SERIES PROPANE CONSTRUCTION HEATER THEORY OF OPERATION The Fuel System: The hose/regulator assembly attaches to the propane gas supply. The propane gas moves through the solenoid valve and out the nozzle. The Air System: The motor turns the fan. The fan pushes air into and around the combustion chamber. This air is heated and provides a stream of clean, hot air. Combustion Chamber Air For Combustion Figure 2 - Cross Section Operational View The Ignition System: The direct spark ignitor (DSI) sends voltage to the igni...