§ 62. Miscellaneous provisions. 1. An existing sprinkler installation, fire alarm, watchman's clock or fire-detecting system which has been approved or accepted by the department having jurisdiction and installed before July first, nineteen hundred fifty-two, in conformity with rules and regulations adopted by the commission, shall, after inspection by the said department, be deemed to be in compliance with the requirements of this chapter.

2. Where a sprinkler system is required by this article, such system shall be constructed to fuse at a temperature not higher than one hundred sixty-five degrees Fahrenheit, spaced so as to protect the area which is required to be sprinklered.

3. In furnace, boiler, laundry rooms and other parts of the dwelling where high temperature usually prevails, sprinkler heads may fuse at a higher temperature. Where such rooms are located at least thirty feet distant from such dwelling, no sprinklers shall be required.

4. Except as otherwise provided in sections fifty-two and fifty-five, an approved fire-detecting system shall be accepted as meeting any requirement for a sprinkler system under this article.