下水道气味在地下室
We recently finished our walk out basement. In the process of finishing the basement we added a new bathroom and laundry. So the plumbing contractor installed new drain lines and repaired a collapsed floor drain. Air admittance valves were installed.
我的问题是这些阀门可以失败。因为有3个安装了，一个在洗衣房里，一个在水槽下的浴室，另一个在炉子的主要废物线和新的厕所废物排水管。由于安装了这些阀门，我现在在公用事业区域获得强大的下水道气味。然而，当空调长时间运行时，嗅觉仅存在。其余的时间，即使炉子正在运行，也没有气味。而且我不会假设它是从地板流失的过程中，因为我们有氡紧的漏极盖。
Any thoughts on why this is happening would be greatly appreciated.
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所有管道承包商都知道讨厌使用这些东西（AAV）。它可能已经有一些便宜的，简单的升级可能会解决它们？或者也许你有一些像淋浴或其他夹具的东西，陷阱在夏天没有使用过量，而AC有助于干燥陷阱，所以下水道气体可以逃脱。
我不觉得我在这里拿到答案。我是一名建筑师，并将推迟到这个机械工程师/承包商，但我以为我会帮助开始头脑风暴。
约书亚
检查炉子上的A-线圈的漏极线是否正确连接到下水道系统。它应该排出陷阱，或者它应该有一个循环，如果它直接连接到下水道线上，则会创建陷阱......
什么类型的A / C系统以及凝结物排水线的运行方式如何？是的，岛上的通风口（我们在这里称之为）可能会失败。开放的陷阱，碎或破裂的废物管线，缺少清理盖，是我首先检查的区域。我在过去21年中检查的一些房屋已经将冷凝水排放直接进入下水道排水管。其中一些是以这样的方式安装的，以便让下水道气体返回到空气处理器中。很难猜测，而不看到地下室和管道。可以是上面提到的任何物品或几个组合。祝你好运。让我们知道什么时候找到它。
我们遇到了相似的气味在tw的过去o other basement areas . First we have septic pump & alarm wires running in conduit from the home to septic pump tank . We have to caulk between the wires & the conduit or the sewer gas smell will back up into the basement . Second we have had smell coming out from around the laundry tub drain where the undersized plastic wasteline hose enters the PVC wasteline . We usually stuff a rag around the wasteline hose to close off the space .
炉子是否为“延长的时间延长”吗？或者周期越短？供应管道位于哪里等？另一种可能性是压抑的地下室绘制烟雾。在热封外的小供应泄漏可能导致在“延长”的运行时显着减压。理想情况下，P-Traps将阻塞所有气体，但是管道布局可以允许在压力下允许气体，有时从通风口堆叠的背面曲目效果。之前提到的建议可能最容易首先出现故障，但这是添加到您的可能性列表中的其他东西。您需要获得鼓风机门和/或管道冲击器来定位和诊断泄漏。祝你好运！
首先，所有嗅觉只是在公用事业区。新的浴室和洗衣房由墙壁隔开。那些房间通常没有气味。
As for the ducts. The entire duct system is run in the basement. I have sealed most of the ducts at this point. With the exception of the filter housing which is an open slot to slide the filter in. This opening is about 4' from the AAV in question.
Next time I notice the smell I will have to test the pressure difference in the utility area. But I don't see why running the A/C would cause more of a depressurization in the area than actually running the furnace which gets all of it's combustion air from that room. And like I said, we only get the sewer smell in the summer months when running the A/C.
The hole for the filter can cause a huge negative pressure - especially being so close to the fan. They make magnetic strips that can cover this gap or simply install duct tape over top of it - will have to remove it each time you change the filter, but does not take very long. Sounds like the negative pressure is sucking the sewer gas either through a dried out trap or a connection lacking a trap. Not sure how those studor vents work - a negative pressure in the room may be able to open one up, will have to ask a plumber about that.
As to why it would only happen during AC and not heat is a mystery to me but could be that the blower runs at a slower speed for the heat or maybe whatever the issue is needs a long cycle to build up enough pressure or something. Hard to guess without being able to see each trap and connection.
Good Luck.
约书亚，
空气处理器/壁橱是“在”杂物间？
我巡回了一个模块化的房子，空气处理器壁橱和“一个且唯一的回归”在洗衣房。
当我关闭洗衣房门口..我可以感受到洗衣房的压力。
(This was a Major modular Home manufacturer)