Non-recirculating direct gas-fired industrial air heaters shall be installed in accordance with manufacturer's instructions.
18-28-926.3.2
Non-recirculating direct gas-fired industrial air heaters shall be installed only in industrial or commercial occupancies.
18-28-926.3.3
Non-recirculating direct gas-fired industrial air heaters shall be permitted to provide fresh air ventilation.
18-28-926.3.4
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.
18-28-926.4 Clearance from combustible materials.
Non-recirculating direct gas-fired industrial air heaters shall be installed with a clearance from combustible materials of not less than that shown on the rating plate and the manufacturer's instructions.
18-28-926.5 Air supply.
All air to the non-recirculating direct gas-fired industrial air heater shall be ducted directly from outdoors. Where outside air dampers or closing louvers are used, they shall be verified to be in the open position prior to main burner operation.