Desa TC250RNG owner manual Safety Information, Unpacking, Theory Operation

MODEL TC250RNG

NATURAL GAS CONSTRUCTION HEATER

SAFETY

INFORMATION

WARNINGS

WARNING: FIRE, BURN, IN-

HALATION, AND EXPLOSION HAZARD. KEEP SOLID COMBUS- TIBLES, SUCH AS BUILDING MA- TERIALS, PAPER OR CARD- BOARD, A SAFE DISTANCE AWAY FROM THE HEATER AS RECOMMENDED BY THE IN- STRUCTIONS. NEVER USE THE HEATER IN SPACES WHICH DO OR MAY CONTAIN VOLATILE OR AIRBORNE COMBUSTIBLES, OR PRODUCTS SUCH AS GASO- LINE, SOLVENTS, PAINT THIN- NER, DUST PARTICLES OR UN- KNOWN CHEMICALS.

WARNING: NOT FOR HOME OR RECREATIONAL VEHICLE USE.

The heater is designed for use as a construc- tion heater. Certain standards govern the use of fuel gases and heating products for specific uses. Your local authority can ad- vise you about these. The primary purpose of construction heaters is to provide tempo- rary heating of buildings under construc- tion, alteration or repair. Properly used, the heater provides safe economical heating. Products of combustion are vented into the area being heated.

We cannot foresee every use which may be made of our heaters. Check with your local fire safety authority if you have questions about heater use.

Carbon Monoxide Poisoning: Some people are more affected by carbon monox- ide than others. Early signs of carbon mon- oxide poisoning resemble the flu, with head- aches, dizziness, and/or nausea. If you have these signs, the heater may not be working properly. Get fresh air at once! Check for proper ventilation and have heater serviced.

Natural Gas: Natural gas has a distinctive odor. This odor helps you detect a natural gas leak. However, the odor may fade. Natu- ral 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 National Fuel Gas Code Handbook, NFPA54/ANSI Z223.1 and the Natural Gas Installation Code, CAN/ CGA B149.2. This instructs on the safe storage and handling of flammable gases.

•Use only with natural gas. Do not attempt to use with LP gas.

•Provide adequate ventilation. Before us- ing heater, provide at least a three-square- 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 re- productive toxin under Proposition 65.

•For indoor use only. Do not use heater outdoors.

•Do not use heater in occupied dwellings or in living or sleeping quarters.

•Do not use heater below ground level.

•Keep appliance area clear and free from combustible materials, gasoline, paint thinner, and other flammable vapors and liquids. Do not use heater in areas with high dust content.

•Minimum heater clearances from com- bustible materials:

Sides: 6 Ft. Top: 5 Ft.

•Check heater for damage before each use. Do not use a damaged heater.

•Check hose (if used) before each use of heater. If highly worn or cut, replace be- fore using heater.

•Locate heater on stable and level surface if heater is hot or operating.

•Not intended for use on finished floors.

•Never block air inlet (bottom of shell) or air outlet (top of shell) of heater.

•Keep heater away from strong drafts, water spray, rain, or dripping water.

•Keep children and animals away from heater.

•Do not leave heater unattended.

•Never move, handle, or service a hot or operating heater. Severe burns may res- ult. You must wait 20 minutes after turn- ing heater off.

•To prevent injury, wear gloves when han- dling heater.

•Never attach duct work to heater.

•Do not alter heater. Keep heater in its original state.

•Do not use heater if altered.

•Turn off natural gas supply to heater when not in use.

•Use only original replacement parts. This heater must use design-specific parts. Do not substitute or use generic parts. Im- proper replacement parts could cause serious or fatal injuries.

UNPACKING

1.Remove all packing items applied to heater for shipment. Keep plastic cover caps (attached to valve inlet) 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.

Note: A gas hose is not included. User must supply hose or flexible connec- tor.

THEORY OF

OPERATION

The Fuel System: The gas supply at- taches to the heater by a minimum 3/8 inch i.d. hose or flexible connector. User must supply hose or flexible connector. The length should be no more than 10 feet long. The natural gas moves through the regulator (if used) and through the control valve, then out the nozzle.

The Ignition System: The piezo ignitor lights the burner fuel supply.

The Automatic Control System: The automatic control valve shuts off the heater if the flame goes out.

2 104133