Mi-T-M Corporation MH-0150-NM10 Manuel De L'opérateur page 11

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
• Ensure that the flow of combustion and ventilation air exchanges cannot become obstructed
• As the building "tightens up" during the construction phase ventilation may need to be increased
USA 8-Hr Time weighted average (OSHA 29 CFR 1926.55 App A)
CO 50 ppm
CO 5000 ppm
2
NO
2
USA – Ceiling Limit (Short Term Exposure Limit = 15 minutes)
CO
CO
2
NO 5 ppm
2
Canada 8-hr time weighted average WorkSafe BC OHS Guidelines Part 5.1 and Ontario Work¬places Reg
833
CO 25 ppm
CO 5000 ppm
2
NO 3 ppm (Reg 833)
2
Canada STEL (15 minutes Reg 833/1 hour WSBC) WorkSafe BC OHS Guidelines Part 5.1 and Ontario Work-
places Reg 833
CO 100 ppm
CO 15,000 ppm (WSCB)
2
30,000 ppm (Reg 833)
NO 1.0 ppm (WorkSafeBC)
2
5.0 ppm (Reg 833)
Note: Installation of this appliance at altitudes above 2000 ft (610 m) shall be in accordance with local codes, or in the ab-
sence of local codes, the National Fuel Gas Code, ANSI Z223.1/NFPA 54, or National Standard of Canada, Natural Gas and
Propane Installation Code, CSA B149.1.
NEVER LEAVE HEATER UNATTENDED WHILE BURNING, CONNECTED TO A POWER SOURCE,
OR WHILE CONNECTED TO A FUEL SOURCE.
Natural Gas Portable Heater Manual
GENERAL SAFETY INFORMATION
11