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NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
• 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 con-
sidered 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 qual-
ity.
CO
CO
2
NO
2
(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.
Installation of this appliance at altitudes above 2000 ft (610 m) shall be in accordance with local codes, or in the absence
of local codes, the National Fuel Gas Code, ANSI Z223.1/NFPA 54, or National Standard of Canada, Natural Gas and Pro-
pane Installation Code, CSA B149.1
The heater has been shipped from the factory set up for operation on propane gas.
Mr. Heater, Inc.| Forced Air Propane Construction Heater
WARNING
Air Quality Hazard
USA 8-Hr Time weighted average
(OSHA 29 CFR 1926.55 App A)
50 ppm
5000 ppm
USA – Ceiling Limit
5 ppm
Canada 8-hr time weighted average
WorkSafe BC OHS Guidelines Part 5.1
and Ontario Workplaces Reg 833
25 ppm
5000 ppm
3 ppm (Reg 833)
Canada STEL (15 minutes Reg 833/1 hour
WSBC) WorkSafe BC OHS Guidelines Part
5.1 and Ontario Workplaces Reg 833
100 ppm
15000 ppm (WSBC)
30000 ppm (Reg 833)
1.0 ppm (WorkSafeBC)
5.0 ppm (Reg 833)
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Operating Instructions and Owner's Manual
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