§ 3a.166. Miniature boilers and kitchen equipment.

 (a)  A miniature boiler must be manufactured under the ASME ‘‘S,’’ ‘‘H’’ or ‘‘M’’ Code. A boiler manufactured under ASME ‘‘S’’ and ‘‘H’’ Code must be stamped with a National Board registration number.

 (b)  Clearance requirements contained in §  3a.36 (relating to clearances) do not govern a miniature boiler or kitchen equipment if all pressure containing parts with appurtenances are visible for inspection.

 (c)  Miniature boiler controls must comply with ASME/CSD1.

 (d)  The sight glass and pressure gauge of a miniature boiler installed in a cabinet must always be visible during operation.

 (e)  Discharge from safety valves must be piped to a safe point.

 (f)  Burners for gas-fired installations must be AGA approved.

 (g)  Inspection of miniature boilers and kitchen equipment shall be performed in accordance with §  3a.111(1)—(6) (relating to field inspections).

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