This standard applies to the installation of a gas boiler used for commercial/industrial purpose
(means a gas boiler other than for residential purpose and includes the case where a gas boiler is
used in an apartment, etc. for central heating and the case where two or more gas boilers are used
being connected to a flue pipe in a house. The same shall apply hereinafter.) among the water
heaters and hot water boilers (hereinafter referred to as "gas boilers") pursuant to Attached Table
7, Subparagraph 4, Item i of the 「Enforcement Regulations of the Safety Control and Business of
Liquefied Petroleum Gas Act」. However, the cases of the gas boilers of which the gas consumption
exceeds 232.6 ㎾ (200,000 ㎉/h) and the gas boilers which satisfy all the following conditions from
(1) to (3) are excluded:
(1) Gas boilers controlled by a safety manager pursuant to the 「Safety Control and Business of
Liquefied Petroleum Gas Act」 (hereinafter referred to as "LP Gas Act”) and 「Urban Gas Business
Act」 (hereinafter referred to as “Urban Gas Act”) or an operator of the equipment subject to
inspection pursuant to 「Energy Use Rationalization Act」
(2) Gas boilers installed in the same room with a combustor that uses any other fuel than LPG and
urban gas or a combustor of which the gas consumption exceeds 232.6 ㎾ (200,000 ㎉/h)
(3) Gas boilers equipped with a backflow preventer to prevent exhaust gas from flowing backward
during operation or in a stationary state
1. General Matters
1.1. Scope of Application
1.2. Effectiveness of Standard
1.3. Terms and Conditions
1.4. Application of Standard (No Content)
1.5. Interim Measures <Revised on Sep. 29, 2017>
2. Facility Standard
2.1. General Requirements
2.2. Connecting Flue Pipe
2.3. Cascade Flue Pipe
2.4. Common Connecting Flue Pipe
2.5. Metallic Duplex Tube Type Chimney
2.6. Chimney
3. Technical Standard
3.1. Safety Maintenance Standard (N/A)
3.2. Transfer and Filling Standard (N/A)
3.3. Examination Standard
4. Inspection Standard
4.1. Inspection Items
4.2. Inspection Method
Appendix A Test Method for Properties of Plastic Materials (Related to 2.1.1.1.1)
Appendix B Main Items (Ratings) of Performance Certification Requirements for Plastic
Materials
Appendix C Method to calculate Cross-sectional Area of Metallic Duplex Tube Type Chimney
Inner Pipe (Related to 2.5.3.6 and 2.5.3.7)
Appendix D Installation Standard for Gas Boilers in Facilities using an Urban Gas before Nov.
28, 1993 <Newly established on Sep. 29, 2017>
Appendix F Method to calculate Cross-sectional Area of Combined Common Exhaust Outlet
Inner Pipe (Related to Appendix E) <Newly established on Sep. 29, 2017>
Appendix G Installation Standard for Gas Boilers in Facilities using an LP Gas before Nov. 28, 1993
<Newly established on Sep. 29, 2017>
Appendix H Installation Standard for Gas Boilers in Facilities using an LP Gas after Nov. 28, 1993 and
before Aug. 24, 2017 <Newly established on Sep. 29, 2017>
