Sec. 22. All fuel oil burners used in connection with hot water and steam heating systems shall be equipped with a pressurestat or some approved automatic device to reduce or extinguish the fire in the event of undue pressure within the boiler.
Mich. Comp. Laws § 125.572
Required equipment; burners connected with heating system
1929, Act 319, Imd
Official source: Michigan Legislature. Reproduced from public-domain Michigan statutes; confirm against the official source for the current text. Not legal advice.