Shortcircuit,
Here's the text from 10.8.3
NFPA 54 National Fuel Gas Code 2006 Edition
10.8.3 Installation.
10.8.3.1 Non-recirculating direct gas-fired industrial air heaters shall be installed in accordance with the manufacturer’s instructions.
10.8.3.2 Non-recirculating direct gas-fired industrial air heaters shall be installed only in industrial or commercial occupancies.
10.8.3.3 Non-recirculating direct gas-fired industrial air heaters shall be permitted to provide fresh air ventilation.
10.8.3.4 Non-recirculating direct gas-fired industrial air heaters shall be provided with access for removal of burners; replacement of motors, controls, filters and other working parts; and for adjustment and lubrication of parts requiring maintenance.
I don't see any reference to carbon monoxide detection in the document.
