-4-
WARNING: Never leave the heater unattended while operating.
Disconnect the heater from its power source when not in use.
WARNING:
Air Quality Hazard
•
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,
CO
2
, And NO
2
considered to be hazardous to health
and potentially life threatening.
•
Do not use in unventilated areas
•
Know the signs of CO and CO
2
poisoning:
•
Headaches, stinging eyes
•
Dizziness, disorientation
•
Difficulty breathing, feelings 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, CO
2
, and NO
2
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.
•
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.
USA 8-Hr Time weighted average
(OSHA 29 CFR 1926.55 App A)
CO
50 ppm
CO
2
5000 ppm
NO
2
N/A
USA-Ceiling Limit
(Short Term Exposure Limit = 15 minutes)
CO
N/A
CO
2
N/A
NO
2
5 ppm
Canada 8-Hr Time weighted average WorkSafe BC OHS
Guidelines Part 5.1 and Ontario Workplaces Reg 833
CO
CO
2
NO
2
5 ppm
Canada STEL (15 minutes Reg 833/1 hour WSBC)
WorkSafe BC OHS Guidelines Part 5.1 and Ontario
Workplace Reg 833
CO
100 ppm
CO
2
15000 ppm (WSBC)
30000 ppm (Reg 833)
NO
2
1.0 ppm (WSBC)
5.0 ppm (Reg 833)
