GB 50041-2020 第4.3.2条
| **** | The gas boiler room shall be equipped with combustible gas concentration detection and alarm devices, interlocked with the emergency shut-off valve and the emergency exhaust fan. |
| **** | The gas boiler room shall be equipped with combustible gas concentration detection and alarm devices, interlocked with the emergency shut-off valve and the emergency exhaust fan. |
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