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cover of episode NOx Secrets HVAC Engineers Need to Know to Comply and Succeed in 2025 with Tyler Nelson Part 2

NOx Secrets HVAC Engineers Need to Know to Comply and Succeed in 2025 with Tyler Nelson Part 2

2025/4/21
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HVAC Know It All Podcast

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Gary McCreadie
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Tyler Nelson
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Gary McCreadie: 我认为,如果在服务电话、启动和维护期间不进行燃烧分析,那么您可能会错过从客户那里获得合法工作的机会。您实际上是在这么做。而且您也失去了确保客户设备安全运行的机会,或者失去了了解客户设备是否安全运行的机会。想象一下,您离开一台设备时,没有使用分析仪,几周后该设备发生故障,运行不安全,一氧化碳探测器报警,您本可以预防这种情况。 在燃烧分析中,哪些读数最重要? 从排水管处进行测试的风险是什么? Tyler Nelson: 我向技术人员传授如何使用燃烧分析仪来提高HVAC系统的安全性、性能和使用寿命。我解释了如何正确读取O2、CO和CO2的水平,以及为什么这些燃烧数值很重要,以及技术人员如何在安装、维护和安全检查中使用这些信息。我还讨论了插入探头以获得准确读数的最佳位置,以及为什么展示您的工作可以建立客户信任。 根据设备的不同,最佳歧管压力可能略高于或低于铭牌上标注的3.5英寸水柱。调整歧管压力后,需要等待读数稳定后再进行判断,因为读数可能会出现波动。人们喜欢燃烧分析,因为它既能提供数据分析,又能带来即时满足感。在设备启动和维护过程中进行燃烧分析,可以建立基准数据,以便日后参考和比较。在设备维护过程中,将旧的燃烧报告与新的燃烧报告进行比较,可以向客户展示维修效果。在燃烧分析报告中添加设备照片,可以更直观地向客户展示工作成果。通过展示燃烧分析报告,可以向客户证明工作质量,消除客户的疑虑。 氧气含量是燃烧分析中最关键的指标,一氧化碳含量也很重要,二氧化碳含量则由氧气含量计算得出。只关注二氧化碳含量可能会忽略一氧化碳含量过高的问题。氧气、一氧化碳和二氧化碳含量之间存在关联性,调整氧气含量可以影响其他两种气体的含量。氮氧化物含量也与氧气、一氧化碳和二氧化碳含量相关,但通常需要专用分析仪才能测量。应关注一氧化碳无氧含量(COAF),该指标可以更准确地反映一氧化碳的浓度。如果燃烧分析仪只显示一氧化碳含量(CO),则不一定是无氧含量。一氧化碳无氧含量(COAF)是重要的安全指标,数值越低越好。 在诱导式通风系统中,探头应放置在诱导风机上方至少1英尺,但不超过2英尺处。如果存在烟道罩,则应在烟道罩上方6至10英寸处进行燃烧测试。测试完成后,应将测试端口堵住。如果无法在室内进行测试,则可以作为最后手段在室外进行测试,但室内测试更准确。从排水管处进行测试可能会导致读数不准确,因为周围的氧气可能会影响读数。即使测试方法不理想,也比不测试好,因为可以说明已经尽力而为。由于越来越多的低氮氧化物系统被安装,对氮氧化物检测的需求也在增加。由于环境问题,对氮氧化物排放的关注度越来越高,这将推动氮氧化物检测技术的进一步发展。

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Chapters
This chapter emphasizes the importance of combustion analysis for HVAC technicians, highlighting its role in ensuring safe and efficient system operation, preventing potential issues, and building customer trust through data-driven results. It also touches upon the appeal of combustion analysis due to its analytical nature and instant gratification.
  • Combustion analysis helps prevent unsafe equipment operation and potential accidents.
  • Analyzing every job helps avoid issues and ensures system safety.
  • Instant feedback from adjustments makes combustion analysis appealing to technicians.

Shownotes Transcript

In this episode of the HVAC Know It All Podcast, host Gary McCreadie) welcomes back Tyler Nelson) from Sauermann Group) for Part 2 of their talk on combustion analysis. Tyler shares more about how tuning equipment with a combustion analyzer can help HVAC techs improve safety, performance, and system life. He also explains how to read O2, CO, and CO2 levels correctly. Tyler Nelson breaks down why combustion numbers matter and how techs can use this info on installs, maintenance, and safety checks. He also talks about the best places to insert the probe for accurate readings and why showing your work builds customer trust. Throughout this episode, Tyler shares real tips for HVAC techs who want to do better work. He says analyzing every job helps avoid issues and keeps systems safe, while also proving the work you’ve done. Expect to Learn:

How using a combustion analyzer helps make HVAC systems safer.  

Why O2 and CO levels are key numbers to watch during testing.  

How to choose the right spot to place your probe for best results.  

Why saving test reports can help show the customer your good work.  

How even small changes in pressure can affect system performance.

  Episode Highlights: [00:00] – Introduction to Part 2 with Tyler Nelson [02:16] –Tuning manifold pressure and waiting for steady readings [04:47] – Why people love doing combustion analysis [05:29] – Saving readings and showing clear before and after reports [07:34] – Key analyzer readings and how O2 impacts other gases [11:20] – What Co Air Free means and why it matters [12:40] – Best probe placement for proper test readings [18:00] – Why testing matters even in tricky situations 

  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 Tyler Nelson on: LinkedIn: https://www.linkedin.com/in/tyler-nelson-master-hvacr-9a8a981b/) Sauermann Group: https://www.linkedin.com/company/sauermann-group/)
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/ )