| 词条 | Ceiling protection switch |
| 释义 |
}} Ceiling protection switches are installed in secondary condensate drain pans in split system HVAC applications.[1] The switch has a buoyant component that floats when the secondary condensate drain pan fills with water from the primary drain pan and shuts down the HVAC system to avoid overflowing. The ceiling protection switch is mainly used in applications where a piece of HVAC equipment is located in an attic or interior space where water damage is likely to occur. The switch does not guarantee the prevention of overflow, but may reduce the amount. Overflow water occurs when the condensate drain line becomes clogged restricting the flow of condensation from the interior to the exterior of the space. Overflow also occurs when an indoor HVAC coil becomes frozen, which when thaws creates excess water. References1. ^{{Cite news|url=https://www.washingtonpost.com/wp-dyn/content/article/2006/03/03/AR2006030300815.html|title=Barry Stone - Secondary Drain Is An AC Must|last=Stone|first=Barry|date=2006-03-04|access-date=2018-02-16|language=en-US|issn=0190-8286}} 1 : Safety switches |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。