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2.

 

SOURCES OF CARBON MONOXIDE 

   

Inside your home, appliances used for heating and cooking are the most likely sources of CO. Vehicles running in attached 

garages can also produce dangerous levels of CO. CO can be produced when burning any fossil fuel, such as gasoline, propane, 

natural gas, oil and wood.    It can be produced by any fuel-burning appliance that is malfunctioning, improperly installed, or 

not ventilated correctly, such as: 

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Automobiles, furnaces, gas ranges/stoves, gas clothes dryers, water heaters, portable fuel burning space heaters and 

generators, fireplaces, wood-burning stoves and certain swimming pool heaters.     

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Blocked chimneys or flues, back drafts and changes in air pressure, corroded or disconnected vent pipes, loose or cracked 

furnace exchangers.   

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Vehicles and other combustion engines running in an open or closed garage, attached or near a home. 

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Burning charcoal or fuel in grills and hibachis in an enclosed area. 

 

3.

 

CONDITIONS THAT CAN RESULT IN TRANSIENT CO SITUATION IN THE HOME: 

 

The following conditions can result in transient CO situations:   

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Excessive spillage or reverse venting of fuel-burning appliances caused by outdoor ambient conditions, such as, wind 

direction and/or velocity, including high gusts of wind, heavy air in the vent pipes (Cold/humid air with extended periods 

between cycles). 

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Negative pressure resulting from the use of exhaust fans. 

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Simultaneous operation of several fuel-burning appliances competing for limited internal air. 

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Vent pipe connections vibrating loose from clothes dryers, furnaces, or water heaters. 

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Obstructions in, or unconventional, vent pipe designs which can amplify the above situations. 

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Extended operation of unvented fuel-burning devices (range, oven, fireplace, etc.). 

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Temperature inversions which can trap exhaust gases near the ground. 

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Vehicle idling in an open or closed garage, or near a home. 

To be safe, know the possible sources of CO in your home. Keep fuel-burning appliances and their chimneys and vents in good 

working condition. Learn the early symptoms of exposure, and if you suspect CO poisoning, move outside to fresh air and get 

emergency help. Your first line of defense is an annual inspection and regular maintenance of your appliances. Contact a 

licensed contractor or call your local utility company for assistance. 

 

4.

 

SYMPTOMS OF CO POISONING 

 35 ppm   

  The maximum allowable concentration for continuous exposure for healthy adults in any 8 hour period 

 200 ppm   

Slight headaches, fatigue, dizziness, nausea after 2-3 hours 

 

400 ppm

      Frontal headaches within 1-2 hours, life threatening after 3 hours 

 

800 ppm

      Dizziness, nausea and convulsions within 45 minutes. Unconsciousness within 2 hours and death within 3 hours 

 

1600 ppm

    Headache, dizziness and nausea within 20 minutes. Death within 1 hour. 

 

6400 ppm

    Headache dizziness and nausea within 1-2 minutes 

 

The following symptoms related to CO POISONNING and are to be discussed with ALL members of the household:   

Mild Exposure: 

Slight headache, nausea, vomiting, fatigue (often described as “flu-like” symptoms) 

Medium Exposure:

 Severe throbbing headache, drowsiness, confusion, fast heart rate.   

Extreme Exposure:

 Unconsciousness, convulsions, cardio respiratory failure, death.   

Many cases of reported CARBON MONOXIDE POISONING indicate that while victims are aware they are not well. They 

become so disoriented they are unable to save themselves by either the building or calling for assistance. Yong children and 

household pets are typically the first affected.   

 

5. IMPORTANT SAFEGUARDS 

Summary of Contents for VST-C598IH

Page 1: ...ectrochemical Power Source 220 240V AC 50Hz and 9V DC Battery back up Operation Current 60mA operation mains Alarm Level 50ppm Between 60 90 min 100ppm Between 10 40 min 300ppm 3min Alarm Sound Level...

Page 2: ...uations z Extended operation of unvented fuel burning devices range oven fireplace etc z Temperature inversions which can trap exhaust gases near the ground z Vehicle idling in an open or closed garag...

Page 3: ...Ignore a safety device when it shuts an appliance z Ignore any warning from your CO alarm CO ALARM PLACEMENT Typical single story home For minimum protection you should fit an alarm in the bedrooms or...

Page 4: ...tion HOW TO INSTALL THIS CARBON MONOXIDE ALARM This CO alarm can be installed either on the ceiling or the wall using the fixings provided DANGER ELECTRICAL SHOCK HAZARD Turn off power at the main fus...

Page 5: ...Push test button to test CO alarm See TESTING THE CO ALARM INTERCONNECTING SMOKE ALARMS For interconnecting line only use 14 18 AWG minimum solid or stranded wire When being interconnected maximum wi...

Page 6: ...minutes NOTE After initial 4 minute Silence cycle the CO Alarm re evaluates present CO levels and responds accordingly If CO levels remain potentially dangerous or start rising higher the alarm will s...

Page 7: ...ting step away when horn starts sounding Push and hold the Test Hush button on the cover until the LED flashes The alarm horn will sound 4 beeps a pause then 4 beeps The ALARM RED light will flash The...

Page 8: ...battery to make the alarm work long Some batteries can be used more than one year The battery should only be replaced by a qualified electrician or similarly qualified person 1 Turn off AC power suppl...

Page 9: ...r using aerosols or adhesives WARNING Reinstall the CO Alarm as soon as possible to assure continuous protection The following is a list of substances that at high levels can damage the sensor or caus...

Page 10: ...ventilating your home CO Alarm sounds frequently even though no high levels of CO are revealed in an investigation The CO Alarm may be improperly located Refer to CO ALARM PLACEMENT Relocate your ala...

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