All fuel oil burners subject to automatic ignition
shall be provided with a permanent an approved automatic device so
designed that oil, upon entering the combustion chamber, shall be
immediately ignited or the oil supply shall be immediately shut off.
Gravity-fed space heaters and hot water heaters
shall be provided with a constant level safety float valve or other
approved device to prevent flooding of the burner due to ignition
failure or any other cause.
All fuel oil burners used with warm air, hot
water, or steam heating systems shall be provided with an approved
warm air limit control, hot water limit control, or pressure limit
control, and low water cut off, respectively to automatically shut
off the burner when safe limits of temperature and/or pressure are
exceeded; except that this requirement shall not be required for warm
air space heaters.
Room thermostats, when required, shall be of
approved type.
Electrically operated controls shall be so designed
that failure of electric current will cause the burner to be shut
off or, in case of pot-type burners, will place burners on low-flame
operation.
