DeWalt DXH40FA Manual De Instrucciones página 9

• Do not use this heater for heating human living quarters.
• Use of direct-fired heaters in the construction environment can result in exposure to levels of CO, CO2, and NO2 considered to be hazardous to health
and potentially life threatening.
• Do not use in unventilated areas.
• Know the signs of CO and CO2 poisoning.
• Headaches, stinging eyes
• Dizziness, disorientation
• Difficulty breathing, feels of being suffocated
• Proper ventilation air exchange (OSHA 29 CFR 1926.57) to support combustion and maintain acceptable air quality shall be provided in accordance
with OSHA 29 CFR Part 1926.154, ANSI A10.10 Safety Requirements for Temporary and Portable Space Heating Devices and Equipment used in the
Construction Industry or the Natural Gas and Propane Installation Codes CSA B149.1.
• Periodically monitor levels of CO, CO2 and NO2 existing at the construction site – at the minimum at the start of the shift and after 4 hours.
• Provide ventilation air exchange, either natural or mechanical, as required to maintain acceptable indoor air quality.
USA 8-Hr Time weighted average (OSHA 29 CFR 1926.55 App A)
CO
CO
2
NO
2
USA – Ceiling Limit(Short Term Exposure Limit = 15 minutes)
CO
CO
2
NO
2
• Ensure that the flow of combustion and ventilation air exchange cannot become obstructed.
• As the building 'tightens up' during the construction phases ventilation may need to be increased.
NEVER LEAVE HEATER UNATTENDER WHILE BURNING
Air Quality Hazard
50 ppm
5000 ppm
5 ppm
WARNING
Canada 8-hr time weighted average WorkSafe BC OHS Guidelines Part
5.1 and Ontario Workplaces Reg 833
Canada STEL (15 minutes Reg 833/1 hour WSBC) WorkSafe BC OHS
Guidelines Part 5.1 and Ontario Workplaces Reg 833
25 ppm
5000 ppm
3 ppm (Reg 833)
100 ppm
15000 ppm (WSBC)
30000 ppm (Reg 833)
1.0 ppm (WorkSafeBC)
5.0 ppm (Reg 833)