View all text of Subpart 53.12 [§ 53.12-1 - § 53.12-1]
§ 53.12-1 - General (modifies HG-600 through HG-640).
(a) The instruments, fittings and controls for heating boilers shall be as indicated in HG-600 through HG-640 of section IV of the ASME Boiler and Pressure Vessel Code (incorporated by reference; see 46 CFR 53.01-1) except as noted otherwise in this section.
(b) For control systems for automatic auxiliary heating equipment, the requirements in part 63 of this subchapter govern and shall be followed.