Briggs & Stratton 040661 Installation And Operation Manual page 13

Generator Placement
The following table includes some examples of potential entry points for CO gas.
LOCATION ENTRY POINT
Windows and
A
doors
B Garage door
C Attic vent
Basement
D
windows
Furnace intake
E
or exhaust vent
F Wall cracks
G Dryer vent
Airflow
H
restrictions
Makeup air
J
system
Carbon
K monoxide
detector(s)
Part No. 80106286
Revision C
Openings that are part of a structure's architecture can permit fresh air and CO into
the structure, especially when open.
An open or improperly unsealed garage door can allow CO to flow into a garage.
Generator exhaust can enter through attic vents and the vents for soffits, crawl
spaces, and ridges or roofs.
Basement windows or hatches that permit ventilation to or from the structure's lower
level also allow CO gas to enter the structure.
Air intakes and furnace exhaust pipes are common entry points for CO gas.
Any cracks in a structure's walls, including the foundation and mortar, and any gaps
around windows, doors, and pipes can let CO in.
Sometimes the exhaust vent for the clothes dryer lets CO gas into the structure.
Areas featuring structural corners and heavy vegetation restrict the airflow and collect
exhaust gas.
Note: Keep all mechanical and gravity outdoor air intake openings for HVAC supply air
systems 10 ft (3,0488 m) horizontally from the generator's enclosure. Refer to section
401 in the ICC Mechanical Code for details on requirements.
Note: Installing functioning CO alarms indoors is the only way to recognize CO gas.
Common smoke alarms do not detect CO gas and will not alert occupants of its
presence.
13
Reducing the Risk of Carbon Monoxide Poisoning
EXPLANATION