Heating System Check Recommended for Carbon Monoxide - CPSC Release 88-92

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POISONING SYMPTOMS - CO - separate article
CARBON MONOXIDE WARNING from the US Consumer Product Safety Commission
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This US CPSC document describes a brief heating system safety warning for homeowners. The CPSC reminds owners to be sure that their heating service contractor also checks the chimney, flue, and flue vent connector as part of annual service (or when a problem is suspected). Unsafe chimneys and flues present a carbon monoxide hazard risk which can be fatal, as well as fire risks in buildings.

We [website authors] advise that special care be taken to inspect older buildings with large masonry flues into which gas-fired appliances have been vented, dead-end chimneys which are easily blocked by falling debris, chimneys with no caps (easily invaded by birds or animals), single-wythe brick flues (a fire and gas leak hazard), and chimneys which have been damaged by leaks or movement.

Readers should see Readers of this document should also see HEAT EXCHANGER LEAKS. The US CPSC document follows.

CPSC Carbon Monoxide Warning

FOR IMMEDIATE RELEASE
November 3, 1988
Release # 88-92

Home Heating System Should Be Checked Now
[for proper venting and for CO Carbon Monoxide Hazards - DJF]

WASHINGTON - Government safety experts are urging consumers to have central heating systems inspected this fall even though the heat may have already been turned on.

The U.S. Consumer Product Safety Commission recommends that central heating equipment be inspected annually by a qualified heating contractor. The furnace or boiler as well as electrical and mechanical components, valves, thermostat controls and automatic safety switches should be tested for proper operation to protect against possible overheating or fuel leaks which may result in fire or explosion.

Although heating contractors do not routinely inspect venting systems as part of the checkup, consumers should ask the contractor to examine the flue and chimney for possible problems. Blockages may be caused by mortar and other material loosened from chimney walls, bird nests or debris. Chimneys and flues should be clear at all times so exhaust gases, including carbon monoxide (CO), are properly vented outside the home. Flues and flue connectors should be checked for tight, secure fitting, and for signs of rust or corrosion, which could allow exhaust gases to enter the house.

CPSC cautioned homeowners to beware of carbon monoxide fumes (CO) in the home. CO is colorless, odorless, and is sometimes called "the silent killer." People exposed to harmful levels of CO often show symptoms similar to flu-type illnesses, including dizziness, fatigue, headaches, irregular breathing and nausea. In the most recent year for which statistics are available, CPSC estimates that almost 60 deaths could be attributed to carbon monoxide gas emitted from central heating equipment.

The federal agency also stressed the importance of chimney inspections where oil or solid fuel heating systems have recently been converted to gas. After the conversion, accumulated soot and debris on the chimney may loosen and fall. If enough debris collects inside the chimney, it could block the chimney and cause a buildup of dangerous levels of carbon monoxide in the home. If the fall checkup of the heating system shows an accumulation of soot in the chimney, a chimney sweep should be called to clean the chimney and flue; annual chimney inspections should be made until no more soot is found.

CPSC said homeowners planing on converting to gas heat should have the chimney inspected when the conversion is made, then annually thereafter.

To report a dangerous product or a product-related injury, call CPSC's hotline at (800) 638-2772 or CPSC's teletypewriter at (800) 638-8270, or visit CPSC's web site at www.cpsc.gov/talk.html. To join a CPSC email subscription list, please go to www.cpsc.gov/cpsclist.asp. Consumers can obtain this release and recall information at CPSC's Web site at www.cpsc.gov.

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The Home Reference Book - the Encyclopedia of Homes, Carson Dunlop & Associates, Toronto, Ontario, 25th Ed., 2012, is a bound volume of more than 450 illustrated pages that assist home inspectors and home owners in the inspection and detection of problems on buildings. The text is intended as a reference guide to help building owners operate and maintain their home effectively. Field inspection worksheets are included at the back of the volume. Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order. Enter INSPECTAHRB in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.

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Inspection Procedures for Oil-Fired Heating Systems Detailed step by step approaches for inspecting complex systems]
Lennox Pulse Furnace Safety Inspection/Warranty Program: Carbon Monoxide Warning
Oil Tanks - The Oil Storage Tank Information Website: Buried or Above Ground Oil Tank Inspection, Testing, Cleanup, Abandonment of Oil Tanks
Oil Tanks Above Ground, UL Standards, guidance for home owners, buyers, and inspectors
Plastic Heating Vent Pipe & Other Heating Safety Recall Notices
Weil McLain Model GV Gas Boiler/gas valve CPSC recall/repair
Domestic and Commercial Oil Burners, Charles H. Burkhardt, McGraw Hill Book Company, New York 3rd Ed 1969.
National Fuel Gas Code (Z223.1) $16.00 and National Fuel Gas Code Handbook (Z223.2) $47.00 American Gas Association (A.G.A.), 1515 Wilson Boulevard, Arlington, VA 22209 also available from National Fire Protection Association, Batterymarch Park, Quincy, MA 02269. Fundamentals of Gas Appliance Venting and Ventilation, 1985, American Gas Association Laboratories, Engineering Services Department. American Gas Association, 1515 Wilson Boulevard, Arlington, VA 22209. Catalog #XHO585. Reprinted 1989.
The Steam Book, 1984, Training and Education Department, Fluid Handling Division, ITT [probably out of print, possibly available from several home inspection supply companies] Fuel Oil and Oil Heat Magazine, October 1990, offers an update,
Principles of Steam Heating, $13.25 includes postage. Fuel oil & Oil Heat Magazine, 389 Passaic Ave., Fairfield, NJ 07004.
The Lost Art of Steam Heating, Dan Holohan, 516-579-3046 FAX
Principles of Steam Heating, Dan Holohan, technical editor of Fuel Oil and Oil Heat magazine, 389 Passaic Ave., Fairfield, NJ 07004 ($12.+1.25 postage/handling).
"Residential Steam Heating Systems", Instructional Technologies Institute, Inc., 145 "D" Grassy Plain St., Bethel, CT 06801 800/227-1663 [home inspection training material] 1987
"Residential Hydronic (circulating hot water) Heating Systems", Instructional Technologies Institute, Inc., 145 "D" Grassy Plain St., Bethel, CT 06801 800/227-1663 [home inspection training material] 1987
"Warm Air Heating Systems". Instructional Technologies Institute, Inc., 145 "D" Grassy Plain St., Bethel, CT 06801 800/227-1663 [home inspection training material] 1987
Heating, Ventilating, and Air Conditioning Volume I, Heating Fundamentals,
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Installation Guide for Residential Hydronic Heating Systems
Installation Guide #200, The Hydronics Institute, 35 Russo Place, Berkeley Heights, NJ 07922
The ABC's of Retention Head Oil Burners, National Association of Oil Heat Service Managers, TM 115, National Old Timers' Association of the Energy Industry, PO Box 168, Mineola, NY 11501. (Excellent tips on spotting problems on oil-fired heating equipment. Booklet.)
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