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cover of episode The Truth Behind Shielded Cables, Programming Logic & HVAC Controls for Techs – Patrick Butler Part 1

The Truth Behind Shielded Cables, Programming Logic & HVAC Controls for Techs – Patrick Butler Part 1

2025/4/24
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HVAC Know It All Podcast

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Gary McCreadie
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Patrick Butler
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Gary McCreadie: 我是一名商业HVAC技术人员,我对楼宇自动化系统有一些了解,但并非专家。我与一名楼宇自动化技术人员发生过争执,因为他不理解机械方面的工作原理。我们需要合作解决问题,而不是互相轻视。 我们应该讨论楼宇自动化系统在商业HVAC中的应用,以及如何将HVAC和控制系统结合起来。还要讨论过去和现在的教学方法,以及如何帮助那些没有太多楼宇自动化经验的技术人员更好地理解它。 我将讲述一个关于热泵的故事,说明楼宇自动化技术人员和机械技术人员之间缺乏沟通和理解所带来的问题。 最后,我想讨论一下住宅领域正在兴起的新技术,例如逆变器,以及如何帮助住宅技术人员更好地理解这些技术。 Patrick Butler: 我是一名商业HVAC技术人员,拥有楼宇自动化方面的经验。从事楼宇自动化的人通常拥有电脑技能和电气背景,他们可能从电工学徒或其他低压电气工作开始。 楼宇自动化系统是HVAC行业中一个非常高级的部分,它能为客户节省能源、监控设备和快速排除故障。最好的控制技术人员非常了解HVAC的机械方面,因为他们理解机械原理,所以学习控制系统更容易。 要控制小型制冷机系统(包括制冷机和泵),需要数据点、制冷机、泵和某种类型的控制器(例如DDC)。DDC是直接数字控制的缩写,指的是控制器。制冷机的控制可以通过模拟信号或数字信号进行,并根据建筑物的需求设置设定点。控制器接收来自传感器的输入,并根据编写的程序向设备(如制冷机和泵)发送输出。控制器有两种类型:可编程控制器和特定应用控制器。 所有电路板的工作原理都是输入和输出,就像炉子中的电路板一样。学习电子学有助于理解电路板的工作原理。楼宇自动化系统可以进行预防性维护,通过趋势图分析数据来发现潜在问题。 屏蔽电缆在楼宇自动化中用于防止电磁场干扰通信信号。在第一次使用BACnet协议的项目中,由于没有正确使用屏蔽电缆,导致数据丢失。屏蔽电缆的接地应该只在一个点进行,以避免接地环路问题。楼宇自动化是一个广泛的主题,学习的最佳方法是从基础开始,先成为一名技术人员,再学习控制系统。 住宅领域正在兴起的新技术(如逆变器)在商业领域已经使用了数十年,住宅技术人员需要适应这种变化。住宅技术人员可以通过学习电子学和使用Arduino等工具来更好地理解逆变器等新技术。逆变器通过控制频率来控制电机的速度,其电路原理相对简单。

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This chapter explores the integration of building automation in HVAC systems, focusing on the importance of collaboration between HVAC technicians and control specialists. It highlights the need for mutual respect between trades and emphasizes the benefits of understanding both mechanical and control aspects of HVAC systems for efficient troubleshooting and maintenance.
  • Building automation improves energy efficiency and streamlines building management.
  • Effective troubleshooting requires understanding both HVAC and control systems.
  • Collaboration between HVAC technicians and control specialists is crucial for problem-solving.

Shownotes Transcript

In this episode of the HVAC Know It All Podcast, host Gary McCreadie) is joined by Patrick Butler), an expert in commercial HVAC and building automation and Field Service Supervisor at SAV-MOR MECHANICAL, INC). Patrick, with years of hands-on experience, explains how building automation is changing how we run HVAC systems. He talks about how it saves energy, makes things work better, and helps find problems fast, especially in big buildings. He also shares how smart tech like controllers and inverters are now being used in both homes and commercial setups. Patrick Butler talks about how building automation is changing the way we manage HVAC systems. He explains how automation helps save energy, keep buildings running smoothly, and make quick repairs. Patrick shares his experience with both mechanical HVAC work and building controls, discussing how smart systems like chillers, pumps, and sensors are integrated. He also touches on the importance of understanding both the mechanical and control sides to be successful in the industry. Here, Patrick talks about how building automation is changing the way we control HVAC systems. He explains how new technologies, like smart controllers and sensors, are improving energy efficiency and making it easier to monitor and manage buildings. He also clears up misconceptions about how complex these systems can be, showing how simple and effective they really are. Expect to Learn:

How building automation is improving energy efficiency in HVAC systems.

Why smart controllers and sensors are key to better building management.

How understanding both HVAC and control systems makes a technician more successful.

How automation helps troubleshoot and maintain HVAC equipment more easily.

The growing role of technology, like chillers, pumps, and inverters, in modern HVAC systems.

Episode Highlights: [00:00] – Introduction to Patrick Butler and Building Automation [01:23] – Patrick’s background in HVAC and controls [01:56] – The role of building automation in modern HVAC systems [03:46] – How smart controllers and sensors improve energy efficiency [06:56] – Understanding DDC and application-specific controllers [08:28] – Troubleshooting HVAC systems using building automation [10:39] – The integration of chillers, pumps, and inverters in HVAC systems [12:25] – The importance of both mechanical and control knowledge for technicians [19:10] – How automation helps prevent HVAC system issues [20:12] – Simplifying complex HVAC systems through smart technologies This Episode is Kindly Sponsored by: Master: https://www.master.ca/) Cintas: https://www.cintas.com/) Supply House: https://www.supplyhouse.com/) Cool Air Products: https://www.coolairproducts.net/ ) Follow the Guest Patrick Butler on: LinkedIn: https://www.linkedin.com/in/patrick-butler-227489308/) Savmor.net: https://www.savmor.net/) Follow the Host: LinkedIn: https://www.linkedin.com/in/gary-mccreadie-38217a77/) Website: https://www.hvacknowitall.com) Facebook: https://www.facebook.com/people/HVAC-Know-It-All-2/61569643061429/) Instagram: https://www.instagram.com/hvacknowitall1/ )