GB 50261-2017 第9.0.13条
| **** | An annual drain test shall be conducted on all terminal test valves of the system, and the system start-up, alarm functions, and water discharge conditions shall be checked for proper operation. |
| **** | An annual drain test shall be conducted on all terminal test valves of the system, and the system start-up, alarm functions, and water discharge conditions shall be checked for proper operation. |
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