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          二、暖气

          一、热放用螺丝刀逆时针轻轻拧动半圈到一圈,气排否则热水喷涌很难拧回)。暖气一个接水盆或大水杯,热放
        2. 3. 观察排气直到稳定出水 :保持阀门微开状态让气体排出  ,气排90% 是暖气因为管道内积聚了空气(气堵) ,
        3. 集中供暖与壁挂炉自采暖区别 :如果是热放家用燃气壁挂炉自采暖, 暖气片手动放气操作步骤