Podcasts about Danfoss

VFD and Controller Settings Does It Matter ??? And Kevin Loves His Neighbors Episode - 522Stop the VFD Hunt: Fixing 0–10V Scaling, Ramps, and Skip Frequencies (Advanced Refrigeration Podcast)Brett Wetzel and Kevin Compass kick off the Advanced Refrigeration Podcast with early-morning chaos, then dive into a common rack problem: VFD and controller settings that don't match, causing suction oscillation and valve hunting. Using an E3/E2-style controller and a Danfoss drive example, they explain correcting the 0–10V analog output scaling so the drive responds immediately (often setting the low end to about 5V and matching minimum reference), aligning minimum/maximum references and speed limits (e.g., typical low-speed limits around 28–30 Hz and high limits around 60 Hz), and avoiding overly aggressive ramp rates that worsen overshoot. They also discuss using skip/bypass frequencies to eliminate resonance that shakes racks, breaks clamps, and damages piping, noting common troublesome ranges seen on certain compressors.

VFD and Controller Settings Does It Matter ??? And Kevin Loves His Neighbors Episode - 522Stop the VFD Hunt: Fixing 0–10V Scaling, Ramps, and Skip Frequencies (Advanced Refrigeration Podcast)Brett Wetzel and Kevin Compass kick off the Advanced Refrigeration Podcast with early-morning chaos, then dive into a common rack problem: VFD and controller settings that don't match, causing suction oscillation and valve hunting. Using an E3/E2-style controller and a Danfoss drive example, they explain correcting the 0–10V analog output scaling so the drive responds immediately (often setting the low end to about 5V and matching minimum reference), aligning minimum/maximum references and speed limits (e.g., typical low-speed limits around 28–30 Hz and high limits around 60 Hz), and avoiding overly aggressive ramp rates that worsen overshoot. They also discuss using skip/bypass frequencies to eliminate resonance that shakes racks, breaks clamps, and damages piping, noting common troublesome ranges seen on certain compressors.

Danfoss Application Engineering Manager Chris Brown discusses the company's recent whitepaper, “Danfoss Multi Ejector High Pressure (HP): Unlocking 21% Savings over Traditional CO₂ Booster Systems,” which details how Danfoss' Multi Ejector HP, in conjunction with parallel compression, can result in significant energy savings, particularly in warm climates. Sponsored by Watercress Financial.

CO2 LMP Racks Hot Gas & What The Heck Is A DTR Valve ?? Episode 520 VideoLMP Rack Deep Dive: Hot Gas Defrost, Superheat Mitigation & Refrigeration “Witchcraft”Brett Wetzel and Kevin Compass kick off the Advanced Refrigeration Podcast with weekend plans and a chaotic start featuring mystery music and van-recorded audio, then jump into Kevin's hectic week swapping out 40-year-old racks and venting about painfully unserviceable EPR and valve layouts while converting controls from CPC to Danfoss. Brett outlines a common VFD control issue where a 0–100% signal causes deadband, aggressive ramping, and cycling, teeing up a future demo with virtual displays. The main discussion breaks down an LMP rack P&ID with heat reclaim, low-temp hot gas defrost, suction setpoints, superheat mitigation via inversely controlled valves and plate heat exchangers, discharge pressure regulation and staged valve reopening after defrost, load shedding, oil separation strategy, and auxiliary heat exchanger quirks, then detours into cool gas defrost debate and a cutaway look at a Venturi-style “injector” device used to cool discharge gas.

LMP Rack Deep Dive: Hot Gas Defrost, Superheat Mitigation & Refrigeration “Witchcraft”Brett Wetzel and Kevin Compass kick off the Advanced Refrigeration Podcast with weekend plans and a chaotic start featuring mystery music and van-recorded audio, then jump into Kevin's hectic week swapping out 40-year-old racks and venting about painfully unserviceable EPR and valve layouts while converting controls from CPC to Danfoss. Brett outlines a common VFD control issue where a 0–100% signal causes deadband, aggressive ramping, and cycling, teeing up a future demo with virtual displays. The main discussion breaks down an LMP rack P&ID with heat reclaim, low-temp hot gas defrost, suction setpoints, superheat mitigation via inversely controlled valves and plate heat exchangers, discharge pressure regulation and staged valve reopening after defrost, load shedding, oil separation strategy, and auxiliary heat exchanger quirks, then detours into cool gas defrost debate and a cutaway look at a Venturi-style “injector” device used to cool discharge gas.

Danfoss Mini Pack Controller Overveiw PC572, Its Friday back from Jersey Episode 519 Mini Pack Controller Deep Dive (PC572 + AK-PT50): CO₂ Condensing Unit Controls, Gateways, and HeadachesBrett and Kevin open the Advanced Refrigeration Podcast with Kevin driving across multiple states after an unexpectedly expensive hotel stay near Springfield, Illinois. Brett gives a brief, hands-on overview of a Danfoss Mini Pack controller (PC572) used on newer single CO₂ condensing units, explaining that programming requires the AK-PT50 Windows software plus a Danfoss gateway and a data-capable micro USB cable. He walks through connecting, uploading, and navigating key menus for plant type, suction groups, compressor/VFD settings (including start speed logic), gas cooler and receiver pressure controls, oil control options, alarms, I/O configuration, and expansion modules needed for missing sensors/outputs. They note unit settings are largely in Celsius/Kelvin, warn not to program Danfoss VFDs with a laptop plugged into wall power, and conclude that these compact condensing units are cramped and would benefit from phone-accessible tools.

Danfoss Mini Pack Controller Overview PC572, Its Friday back from Jersey Episode 519 Mini Pack Controller Deep Dive (PC572 + AK-PT50): CO₂ Condensing Unit Controls, Gateways, and HeadachesBrett and Kevin open the Advanced Refrigeration Podcast with Kevin driving across multiple states after an unexpectedly expensive hotel stay near Springfield, Illinois. Brett gives a brief, hands-on overview of a Danfoss Mini Pack controller (PC572) used on newer single CO₂ condensing units, explaining that programming requires the AK-PT50 Windows software plus a Danfoss gateway and a data-capable micro USB cable. He walks through connecting, uploading, and navigating key menus for plant type, suction groups, compressor/VFD settings (including start speed logic), gas cooler and receiver pressure controls, oil control options, alarms, I/O configuration, and expansion modules needed for missing sensors/outputs. They note unit settings are largely in Celsius/Kelvin, warn not to program Danfoss VFDs with a laptop plugged into wall power, and conclude that these compact condensing units are cramped and would benefit from phone-accessible tools.

Tre utställare, Danfoss, LK och Somatherm, presenterar tre lösningar: smart värmebalansering, snabbare åtgärder av flödesproblem och rätt underhåll av expansionskärl. I VVS-poddens avsnitt från Nordbygg får du koll på ny teknik och gamla misstag.

Dette afsnit handler om elektrificering af fjernvarmen set fra en af de store leverandørers synspunkt. En af de leverandører, der har hånden på kogepladen og skal forsøge at navigere i, om deres investeringer i udvikling og salg af teknologi skal være i den forventede omfattende elektrificering. Gæst er salgsdirektør i Danfoss Jonas Hamann. Vi taler om, hvad de hører i markedet omkring trends, muligheder og software-løsninger, der kan tackle nogle af de udfordringer, vi var omkring i et tidligere afsnit om elektrificering af fjernvarmen.

In this Cloud Wars conversation, Bob Evans sits down with Shub Bhowmick, CEO and Founder of Tredence, alongside Yasmeen Ahmad from Google Cloud to explore how enterprises are moving from AI applications to AI agents. Their discussion focuses on what it takes to turn intelligence into action — covering data foundations, semantic layers, agentic architectures, and the operational shifts required for businesses to scale AI successfully. Turning AI Into Action The Big Themes: AI Agents Redefine Applications: Traditional AI apps assist by querying data, generating recommendations, and supporting limited workflows. AI agents, however, represent a much deeper operational shift. As Ahmad explains, agents are multi-step reasoning engines that can access multiple systems, coordinate actions, and execute entire business processes autonomously. Instead of simply helping humans decide, they can perform work across ERP systems, supply chains, and customer interactions. This changes the role of the database itself — from a storage and query engine into a reasoning engine with vector search, graph RAG, and semantic understanding. Examples like Home Depot and Danfoss show how this creates massive efficiency gains Why Questions Require Agentic Intelligence: Shub Bhowmick draws a critical distinction between “what” questions and “why” questions. A conversational BI system can answer what happened — such as how much sales dropped — but a “why” question demands deeper reasoning. Why did sales decline? Was it pricing pressure, competitor behavior, inventory constraints, or macroeconomic events? These problems require hypothesis-driven exploration. Tredence addresses this through business semantic layers, knowledge graphs, and hypothesis banks that support open-ended reasoning. Closed Systems Create Long-Term Risk: Bhowmick warns against enterprises rushing toward closed, inflexible platforms simply because they promise faster short-term value. While packaged solutions may accelerate deployment, they often restrict ownership, adaptability, and future innovation. In contrast, open architectures built with hyperscalers like Google Cloud allow customers to own the IP, customize solutions, and evolve as the market changes. The Big Quote: “Gone are the days when these migrations used to take 12 to 18 months. Nowadays, you have to complete these migrations in less than three to four months.” More from Tredence and Google Cloud: Learn about the partnership between Tredence and Google Cloud and AI agents on Gemini Enterprise. Visit Cloud Wars for more.

In this episode of Controller Talk North America, Dave Yoder and Chris Brown discuss how Danfoss variable frequency drives (VFDs) can be connected to System Manager 800 and 800A controllers, with a focus on best practices and real‑world considerations for North American supermarket and warehouse applications.Chris and Dave cover what's required to bring a drive online, including communications hardware, software compatibility, addressing, and network wiring. They explain what system managers can and can't do once a drive is connected and why a proper commissioning process is critical for reliable communication.************The Controller Talk Podcast, presented by Danfoss North America, is hosted by Food Retail Tech Support experts Dave Yoder and Chris Brown, highlighting best practices for utilizing Danfoss controls in the supermarket and warehouse industries that you won't find in any manual.Drop us an email with suggestions for topics to cover, questions to answer, or comments to discuss on future episodes!ControllerTalkNorthAmerica@Danfoss.com.For more information and additional episodes of the Controller Talk podcast, visit https://controllertalk.captivate.fm/ Subscribe on Apple Podcasts (https://podcasts.apple.com/us/podcast/controller-talk/id1617965227), Spotify (https://controllertalk.captivate.fm/spotify) and Google Podcasts (https://podcasts.google.com/feed/aHR0cHM6Ly9mZWVkcy5jYXB0aXZhdGUuZm0vY29udHJvbGxlcnRhbGs?ep=14).

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses Join the Refrigeration Mentor Hub here In this conversation, we're talking supermarket case controllers with longtime refrigeration technician and Refrigeration Mentor Community Ambassador Andrew Freeburg. We cover why they're becoming more common (especially with CO2), and how they compare across brands like Danfoss, Copeland, CAREL, RDM and others. We also break down what case controllers do - running the case by controlling lights, fans, defrost, and electronic expansion valves - along with basic checks and troubleshooting tips to help refrigeration techs be more efficient and confident on service calls. In this episode, we discuss: (02:49) What Refrigeration Case Controllers Do (04:09) Remote Access (05:16) Key Case Controller Sensors and Relays (07:25) Electronic Valve Types (08:29 Sensor Verification (10:00) Programming and Manuals (14:17) Fine Tuning Case Controllers Helpful Links & Resources: Episode 257. CO2 Experts Live: Case Controllers with Kevin Mullis Episode 261. Supermarket Case Controller Troubleshooting Tips Episode 282. Danfoss CO2 Controllers with Dave Yoder

CO2 Rack ‘What-If' Simulations: Gas Cooler Control, Fan/Motor Issues, and Low-Charge BehaviorBrett Wetzel and Kevin Compass open Episode 512 of the Advanced Refrigeration Podcast discussing busy travel, severe weather, and Brett's final field training day, where they ran CO2 rack “what-if” simulations. They focus on gas cooler TD control via the gas cooler outlet temperature sensor, stressing proper sensor placement and comparing Danfoss limitations to other EMS options (including saturation-based control and fan lockouts). Brett describes attempts to override sensor values on a pack controller, using offsets instead, and demonstrates how warmer gas cooler outlet temperatures (or fan loss) increase flash gas, driving the BGV and medium-temp suction/compressors. They simulate an I-pressure valve stuck open and discuss pitfalls of overriding valves in multiple Danfoss screens. They troubleshoot inverted/programmable EC fan motors, documentation challenges, daisy-chained control wiring issues, and discuss low-charge behavior causing HPV and BGV to close while cases may starve. They also debate liquid piping pickup location (side vs bottom), heat exchanger effects, superheat settings, and hot gas injection setpoints versus Copeland minimum superheat guidance.

CO2 Rack ‘What-If' Simulations: Gas Cooler Control, Fan/Motor Issues, and Low-Charge BehaviorBrett Wetzel and Kevin Compass open Episode 511 of the Advanced Refrigeration Podcast discussing busy travel, severe weather, and Brett's final field training day, where they ran CO2 rack “what-if” simulations. They focus on gas cooler TD control via the gas cooler outlet temperature sensor, stressing proper sensor placement and comparing Danfoss limitations to other EMS options (including saturation-based control and fan lockouts). Brett describes attempts to override sensor values on a pack controller, using offsets instead, and demonstrates how warmer gas cooler outlet temperatures (or fan loss) increase flash gas, driving the BGV and medium-temp suction/compressors. They simulate an I-pressure valve stuck open and discuss pitfalls of overriding valves in multiple Danfoss screens. They troubleshoot inverted/programmable EC fan motors, documentation challenges, daisy-chained control wiring issues, and discuss low-charge behavior causing HPV and BGV to close while cases may starve. They also debate liquid piping pickup location (side vs bottom), heat exchanger effects, superheat settings, and hot gas injection setpoints versus Copeland minimum superheat guidance.

In this episode of the HVAC School Podcast, host Bryan sits down with Jeff Staub, Director of OEM Sales for Danfoss North America, to explore one of the most rapidly evolving frontiers in the HVAC and refrigeration world: thermal management for AI data centers. With nearly 30 years of industry experience spanning technical support, application engineering, and product development, Jeff brings deep expertise on how the explosive growth of AI chip technology is reshaping data center cooling architecture — and creating major new opportunities for HVAC professionals, contractors, and facility managers alike. A central theme of the conversation is heat recovery — specifically, how the enormous amounts of heat generated by high-density GPU chips in modern data centers can be captured and repurposed rather than simply rejected into the atmosphere. Jeff explains that while heat recovery itself is not a new concept (supermarkets have used reheat coils and heat reclaim for decades), its application in AI data centers presents fresh challenges and possibilities. The heat coming off liquid-cooled server chips typically runs around 90 to 100 degrees Fahrenheit — useful, but not immediately at the temperature needed for most end applications like domestic hot water or space heating. Boosting that heat using heat pumps or feeding it into district energy systems, boiler pre-heat loops, vertical farms, or multifamily housing developments are among the most promising strategies being explored around the world. Jeff highlights a significant contrast between Europe and the United States in how heat recovery is being adopted. In Europe, where district energy networks are widespread, data centers can plug directly into community heating infrastructure — and projections suggest that 80% of European data centers will incorporate heat recovery in the near future. In the US, the picture is more fragmented: while opportunities exist at universities, hospitals, urban mixed-use developments, and facilities co-located with nuclear power plants, the economics are trickier. Key sticking points include who owns the capital expenditure for heat recovery modules and heat pumps, and who ultimately benefits from the recovered heat. Bryan and Jeff discuss how innovative ownership models — with landlords, municipalities, or co-tenants sharing infrastructure — are beginning to unlock these opportunities, and how co-generation arrangements with power stations present exciting long-term potential. The episode wraps up with highly practical guidance for HVAC contractors and facility managers looking to break into the data center space. Jeff encourages technicians not to be intimidated: the fundamentals of vapor compression, chiller systems, and fluid flow that HVAC professionals already know transfer directly to data center work. The key additions are familiarity with large centrifugal and screw compressors, variable frequency drives on pumps, glycol loop management, and central distribution unit (CDU) architectures. Bryan emphasizes that the boundary between HVAC and plumbing will continue to blur as secondary fluid pumping becomes more prevalent — and that staying curious and investing in ongoing training (through manufacturer programs like Danfoss Learning, Carrier University, and others) is the best way to ride this wave rather than get left behind. Both hosts agree: AI data centers are not going away, and the technicians who keep them cool will be indispensable. Topics Covered The evolution of data center cooling — from direct vapor compression on chips, to air-conditioned server rooms (CRAC units), to today's liquid cooling and chiller-loop architectures Why AI GPU chips generate unprecedented heat densities, with individual server racks approaching 250 kW to 1 MW of heat output What heat recovery means in the data center context: capturing hot water (90–100°F) off chip cooling loops instead of rejecting it to outdoor air The concept of 'heat quality' — why low-temperature waste heat is abundant but difficult to use directly, and how heat pumps solve the temperature-lift challenge Real-world heat recovery applications: district energy systems, boiler pre-heat, vertical farms, multifamily housing, hospitals, and universities Europe vs. the US: why district energy adoption makes heat recovery far more common in European data centers, and what the US can learn Business model challenges: who pays for heat recovery infrastructure, and how co-location, municipal incentives, and landlord ownership models can unlock value Co-generation opportunities: feeding recovered heat back into steam turbines at co-located nuclear or power plants How heat recovery makes heat pump technology more viable by raising the source temperature and reducing compression ratio Danfoss's role in data center thermal management — from compressors and drives to plate heat exchangers, CDU flow control, and prepackaged heat recovery modules Refrigerant transitions and what they mean for data center cooling (R-410A to R-454B, CO2 transcritical systems, potential two-phase refrigerant direct-to-chip cooling) The convergence of HVAC and plumbing trades in a world of secondary fluid pumping and isolated refrigerant charges Absorption chiller technology as a potential future use case for low-grade waste heat Advice for contractors: how existing chiller and refrigeration skills translate to data center work, and what new competencies to build Career and training resources: Danfoss Learning, manufacturer universities (Carrier, Trane, McQuay), and leveraging AI tools for self-education The importance of redundancy and uptime in mission-critical data center environments — and what that means for service response expectations   Learn more about Danfoss at danfoss.com/learning Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool. Purchase your tickets or learn more about the 7th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android. Subscribe to our YouTube channel. Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

Danfoss Case Controllers Enables and Control, Does GoogleTranslate Do Scottish?? Episode-508Brett Wetzel and first-time guest Kevin Compass kick off the Advanced Refrigeration Podcast in a chaotic mood after tech failures, traffic, and a rough week on a large grocery-store refrigeration job where electricians are slowing progress, skipping work on energized circuits, and delaying rack startup. They talk about traveling, hotel safety concerns, sleep deprivation, and returning the following week because verification is only partially complete and the rack couldn't be started. The conversation shifts into Danfoss case control and pack controller details, including correcting earlier misunderstandings about fan shutdown logic being handled automatically by the pack controller if programmed correctly. Brett walks through Danfoss thermostat control settings (on/off vs modulating), notes recommended minimum modulation percentages (around 3.6–4), and discusses guidance from Brian Rogers about avoiding modulating on dual-temp islands unless using an EPR, especially on CO2 systems due to potential icing issues. They explain S3/S4 sensor weighting (inlet vs discharge air), caution against using weighted control where return air can be blocked (turkey, produce, beer cases), and discuss how modulating control can reduce cycling and improve rack stability—especially on low-temp circuits that affect medium-temp load and BGV stability. They debate CO2 ejector versus high-pressure valve operation, with Brett noting updated information that ejectors run as primary until high utilization before the HPV opens. The episode also covers Danfoss network scheduling for case enable/shutdown staging, group-based defrost schedules, why long stage delays can cause short cycling after power blips, the value of adding minimum loop protections, and the confusion of chained controller calculations. They end by noting a potential wiring/relay issue on ejector solenoids (not all on solid-state relays), joking about communication challenges with a Scottish colleague, and signing off as Brett heads to sleep before an early flight.

Brett Wetzel and first-time guest Kevin Compass kick off the Advanced Refrigeration Podcast in a chaotic mood after tech failures, traffic, and a rough week on a large grocery-store refrigeration job where electricians are slowing progress, skipping work on energized circuits, and delaying rack startup. They talk about traveling, hotel safety concerns, sleep deprivation, and returning the following week because verification is only partially complete and the rack couldn't be started. The conversation shifts into Danfoss case control and pack controller details, including correcting earlier misunderstandings about fan shutdown logic being handled automatically by the pack controller if programmed correctly. Brett walks through Danfoss thermostat control settings (on/off vs modulating), notes recommended minimum modulation percentages (around 3.6–4), and discusses guidance from Brian Rogers about avoiding modulating on dual-temp islands unless using an EPR, especially on CO2 systems due to potential icing issues. They explain S3/S4 sensor weighting (inlet vs discharge air), caution against using weighted control where return air can be blocked (turkey, produce, beer cases), and discuss how modulating control can reduce cycling and improve rack stability—especially on low-temp circuits that affect medium-temp load and BGV stability. They debate CO2 ejector versus high-pressure valve operation, with Brett noting updated information that ejectors run as primary until high utilization before the HPV opens. The episode also covers Danfoss network scheduling for case enable/shutdown staging, group-based defrost schedules, why long stage delays can cause short cycling after power blips, the value of adding minimum loop protections, and the confusion of chained controller calculations. They end by noting a potential wiring/relay issue on ejector solenoids (not all on solid-state relays), joking about communication challenges with a Scottish colleague, and signing off as Brett heads to sleep before an early flight.

In this episode of the Controller Talk North America Podcast, Dave Yoder and Chris Brown cover low voltage wiring best practices for supermarket and warehouse refrigeration systems across the US and Canada.************The Controller Talk Podcast, presented by Danfoss North America, is hosted by Food Retail Tech Support experts Dave Yoder and Chris Brown, highlighting best practices for utilizing Danfoss controls in the supermarket and warehouse industries that you won't find in any manual.Drop us an email with suggestions for topics to cover, questions to answer, or comments to discuss on future episodes!ControllerTalkNorthAmerica@Danfoss.com.For more information and additional episodes of the Controller Talk podcast, visit https://controllertalk.captivate.fm/ Subscribe on Apple Podcasts (https://podcasts.apple.com/us/podcast/controller-talk/id1617965227), Spotify (https://controllertalk.captivate.fm/spotify) and Google Podcasts (https://podcasts.google.com/feed/aHR0cHM6Ly9mZWVkcy5jYXB0aXZhdGUuZm0vY29udHJvbGxlcnRhbGs?ep=14).

Danfoss Programming, Watching Brett Fail, AHR Recap, Mini Bar Mayhem-Episode-507Brett Wetzel and recurring guest Kevin Compass kick off with a chaotic hotel minibar mishap where simply picking up items triggers expensive charges, then roll into a wide-ranging, comedic shop talk episode. Kevin describes a slow work week of wire-pulling and quoting jobs and mentions traveling to Texas soon, while Brett recaps two weeks of nonstop travel from Vegas to Newark, Pennsylvania (visiting Remco), and New York for an NASRC event—contrasting “cake” startups with jobs where everything is on fire. They swap stories about racks being mysteriously shut off (including by people in mechanical rooms) and a condo complex protesting rooftop condenser noise until an Aldi blocked a shortcut with a parked semi. The bulk of the episode dives into Danfoss CO₂ rack controls and tuning: comparing Danfoss algorithms to E3, discussing PI settings (KP and TN), neutral band behavior, zone acceleration/deceleration, and how to export/copy controller settings to PDF for before/after records—then using ChatGPT to identify changes. They debate relief setpoints and high-pressure cutouts (including 130 bar/1885 psi references), question why certain pressure limits match, and complain about Danfoss gas cooler fan control relying on temperature instead of pressure, especially in cold weather. Brett explores IO configuration and general-purpose controllers while trying (and failing) to map sensor “S7,” then proposes relay-based fan bank staging as a workaround for EC motors that don't turndown low enough. They also cover double digital compressor control, advising to set “frequency” scaling to 0–100 (capacity) rather than 0–60, and clarify analog output differences between IDCM modules and Copeland CoreSense (including 1–5V). The conversation shifts to parallel compression and ejector systems: setting up multi-ejector models/blocks, how logic may switch from high-pressure valves to ejectors, and concerns that ejectors/parallel compression can rob already-light medium-temp load. Reviewing piping/prints, they critique oil reservoir piping, note an oil vent differential of 2.4 bar as too low, discuss desuperheater risks in cold ambient conditions, and complain about pre-relief valves and gas cooler bypass as problematic “band-aids.” They wrap with Brett's early Monday flight to Texas, jokes about being recognized on job sites, and their usual back-and-forth sarcasm and banter throughout.

Brett Wetzel and recurring guest Kevin Compass kick off with a chaotic hotel minibar mishap where simply picking up items triggers expensive charges, then roll into a wide-ranging, comedic shop talk episode. Kevin describes a slow work week of wire-pulling and quoting jobs and mentions traveling to Texas soon, while Brett recaps two weeks of nonstop travel from Vegas to Newark, Pennsylvania (visiting Remco), and New York for an NASRC event—contrasting “cake” startups with jobs where everything is on fire. They swap stories about racks being mysteriously shut off (including by people in mechanical rooms) and a condo complex protesting rooftop condenser noise until an Aldi blocked a shortcut with a parked semi. The bulk of the episode dives into Danfoss CO₂ rack controls and tuning: comparing Danfoss algorithms to E3, discussing PI settings (KP and TN), neutral band behavior, zone acceleration/deceleration, and how to export/copy controller settings to PDF for before/after records—then using ChatGPT to identify changes. They debate relief setpoints and high-pressure cutouts (including 130 bar/1885 psi references), question why certain pressure limits match, and complain about Danfoss gas cooler fan control relying on temperature instead of pressure, especially in cold weather. Brett explores IO configuration and general-purpose controllers while trying (and failing) to map sensor “S7,” then proposes relay-based fan bank staging as a workaround for EC motors that don't turndown low enough. They also cover double digital compressor control, advising to set “frequency” scaling to 0–100 (capacity) rather than 0–60, and clarify analog output differences between IDCM modules and Copeland CoreSense (including 1–5V). The conversation shifts to parallel compression and ejector systems: setting up multi-ejector models/blocks, how logic may switch from high-pressure valves to ejectors, and concerns that ejectors/parallel compression can rob already-light medium-temp load. Reviewing piping/prints, they critique oil reservoir piping, note an oil vent differential of 2.4 bar as too low, discuss desuperheater risks in cold ambient conditions, and complain about pre-relief valves and gas cooler bypass as problematic “band-aids.” They wrap with Brett's early Monday flight to Texas, jokes about being recognized on job sites, and their usual back-and-forth sarcasm and banter throughout.

In this episode of the Controller Talk North America Podcast, Dave Yoder and Chris Brown break down practical dos and don'ts for working with the SM 800A in supermarket and warehouse applications across the US and Canada.************The Controller Talk Podcast, presented by Danfoss North America, is hosted by Food Retail Tech Support experts Dave Yoder and Chris Brown, highlighting best practices for utilizing Danfoss controls in the supermarket and warehouse industries that you won't find in any manual.Drop us an email with suggestions for topics to cover, questions to answer, or comments to discuss on future episodes!ControllerTalkNorthAmerica@Danfoss.com.For more information and additional episodes of the Controller Talk podcast, visit https://controllertalk.captivate.fm/ Subscribe on Apple Podcasts (https://podcasts.apple.com/us/podcast/controller-talk/id1617965227), Spotify (https://controllertalk.captivate.fm/spotify) and Google Podcasts (https://podcasts.google.com/feed/aHR0cHM6Ly9mZWVkcy5jYXB0aXZhdGUuZm0vY29udHJvbGxlcnRhbGs?ep=14).

Dive into the latest updates of the SM 800A with version 4.2.4. This episode covers the new communication features for LON devices, the addition of Comm Stats tab, and the importance of strong passwords for compliance. Discover tips and tricks for troubleshooting Ethernet connections and explore the new Modbus options for connecting to HGM-MZ and CO2-MZ.************The Controller Talk Podcast, presented by Danfoss North America, is hosted by Food Retail Tech Support experts Dave Yoder and Chris Brown, highlighting best practices for utilizing Danfoss controls in the supermarket and warehouse industries that you won't find in any manual.Drop us an email with suggestions for topics to cover, questions to answer, or comments to discuss on future episodes!ControllerTalkNorthAmerica@Danfoss.com.For more information and additional episodes of the Controller Talk podcast, visit https://controllertalk.captivate.fm/ Subscribe on Apple Podcasts (https://podcasts.apple.com/us/podcast/controller-talk/id1617965227), Spotify (https://controllertalk.captivate.fm/spotify) and Google Podcasts (https://podcasts.google.com/feed/aHR0cHM6Ly9mZWVkcy5jYXB0aXZhdGUuZm0vY29udHJvbGxlcnRhbGs?ep=14).

In this engaging episode, we chat with Nick from Danfoss about the latest innovations in HVAC and refrigeration. Discover how vapor and liquid injection technologies are revolutionizing compressor performance and enabling heat pumps to thrive in extreme cold climates. We cover: • The role of vapor injection in efficiency and capacity gains • How cold climate heat pumps are transforming heating solutions in extreme environments • How new refrigerants and regulations are shaping the industry • The importance of contractor education in adopting advanced systems Tools like Danfoss' Cold Selector program to simplify system design and support technicians Nick shares valuable insights into the future of HVAC and refrigeration, emphasizing the critical role of collaboration and education in the transition to these advanced systems. Packed with insights and practical tips, this episode is a must-listen for contractors and industry professionals. Learn more at danfoss.com.

In this episode, Dave Yoder and Chris Brown break down the XM 208C Stepper Module, covering its key features, valve compatibility, and new approval for use with System Manager 800A (v4.2+). They also share troubleshooting tips, take on a “Stump Chris” challenge, and wrap up with listener mail. ************The Controller Talk Podcast, presented by Danfoss North America, is hosted by Food Retail Tech Support experts Dave Yoder and Chris Brown, highlighting best practices for utilizing Danfoss controls in the supermarket and warehouse industries that you won't find in any manual.Drop us an email with suggestions for topics to cover, questions to answer, or comments to discuss on future episodes!ControllerTalkNorthAmerica@Danfoss.com.For more information and additional episodes of the Controller Talk podcast, visit https://controllertalk.captivate.fm/ Subscribe on Apple Podcasts (https://podcasts.apple.com/us/podcast/controller-talk/id1617965227), Spotify (https://controllertalk.captivate.fm/spotify) and Google Podcasts (https://podcasts.google.com/feed/aHR0cHM6Ly9mZWVkcy5jYXB0aXZhdGUuZm0vY29udHJvbGxlcnRhbGs?ep=14).

In this hysterical episode of the Advanced Refrigeration Podcast, hosts Brett Wetzel and Kevin Compass tackle a series of CO2 startup disasters and share amusing tales from the field. From maneuvering oversized manifolds to enduring 43-degree machine rooms, the guys recount their week's most head-scratching moments. They also break down tricky Danfoss configurations, including mysterious PI calculations and the intricacies of addressing E1K controllers. Whether you're in it for the technical deep dives or just the chuckles, you're in for a wild refrigerant ride!

In this hysterical episode of the Advanced Refrigeration Podcast, hosts Brett Wetzel and Kevin Compass tackle a series of CO2 startup disasters and share amusing tales from the field. From maneuvering oversized manifolds to enduring 43-degree machine rooms, the guys recount their week's most head-scratching moments. They also break down tricky Danfoss configurations, including mysterious PI calculations and the intricacies of addressing E1K controllers. Whether you're in it for the technical deep dives or just the chuckles, you're in for a wild refrigerant ride!

In this episode of the Advanced Refrigeration Podcast, hosts Brett Wetzel and Kevin Compass dive into the intricacies of CO2 systems, sharing tips on maximizing efficiency and minimizing waste. From charging hacks and troubleshooting Danfoss controllers to wrestling with pressure washer hoses and sight glasses, the duo provides a mix of technical insights and humorous banter. Plus, discover why using the right charging setup can save you time, money, and headaches. Perfect for HVAC professionals looking for both practical advice and a good laugh!

In this episode of the Advanced Refrigeration Podcast, hosts Brett Wetzel and Kevin Compass dive into the intricacies of CO2 systems, sharing tips on maximizing efficiency and minimizing waste. From charging hacks and troubleshooting Danfoss controllers to wrestling with pressure washer hoses and sight glasses, the duo provides a mix of technical insights and humorous banter. Plus, discover why using the right charging setup can save you time, money, and headaches. Perfect for HVAC professionals looking for both practical advice and a good laugh

In this informative episode, we're joined by Jamie Kitchen from Danfoss to demystify one of the most misunderstood components in HVAC systems: the expansion valve. With decades of experience in the field, Jamie and Clifton break down the fundamentals, common misconceptions and evolution of this critical component. Learn more at danfoss.com.

In this informative episode, we're joined by Jamie Kitchen from Danfoss to demystify one of the most misunderstood components in HVAC systems: the expansion valve. With decades of experience in the field, Jamie and Clifton break down the fundamentals, common misconceptions and evolution of this critical component. We explore: • How expansion valves work and why they're often misdiagnosed • The role of sensing bulbs and the “secret sauce” behind their operation • Key differences between refrigeration and air conditioning systems • The importance of universal aftermarket solutions like the TR6 valve • How proper training and education can reduce callbacks and improve efficiencyJamie shares practical insights and actionable advice for contractors, technicians and industry professionals looking to improve performance, reduce errors and adapt to refrigerant transitions. Whether you're troubleshooting in the field or stocking your truck, this episode is packed with tips to help you succeed.Learn more at danfoss.com.

Join hosts Brett Wetzel and Kevin Compass in this comically chaotic episode of the Advanced Refrigeration Podcast! While Kevin struggles with a malfunctioning VPN and frustrating remote support issues, Brett tackles a misbehaving VSD compressor and explains his VPN woes. From making fun of Matthew from Michigan to struggling with case controllers, this episode is packed with technical insights and humor. Plus, hear about Brett's upcoming adventures in Newfoundland and plans to visit the Dildo Brewery! Whether you're a seasoned HVAC pro or just in need of a good laugh, this episode has it all!

Join hosts Brett Wetzel and Kevin Compass in this comically chaotic episode of the Advanced Refrigeration Podcast! While Kevin struggles with a malfunctioning VPN and frustrating remote support issues, Brett tackles a misbehaving VSD compressor and explains his VPN woes. From making fun of Matthew from Michigan to struggling with case controllers, this episode is packed with technical insights and humor. Plus, hear about Brett's upcoming adventures in Newfoundland and plans to visit the Dildo Brewery! Whether you're a seasoned HVAC pro or just in need of a good laugh, this episode has it all!

"Get your hands dirty: credibility in Japan is built in the field, not the boardroom". "Bridges beat barriers: headquarters alignment turns local problems into solvable projects". "Make people proud: structured "poster sessions" spark ownership, ideas and nemawashi". "Decisions at the edge: push market choices to those closest to customers, then coach". "Trust travels: clear logic, calm feedback, and consistency convert caution into commitment". Belgian-born power-electronics engineer turned global executive, Erwin Yseijin leads Semikron Danfoss in Japan with more than three decades across Japan, Germany, and Taiwan. Beginning as a hardware engineer in switch-mode power supplies and motor drives, he joined a Japanese semiconductor firm in Munich in 1989 and relocated to Japan in 1992, learning operations, production planning, quotations, and logistics from the inside. Subsequent leadership roles at Infineon included Japan and a five-year post-merger integration in Taiwan overseeing ~50 R&D engineers and close OEM relationships across PCs, routers, and wireless. After a gallium-nitride startup stint in Dresden, he joined Semikron, later Semikron Danfoss, leading APAC reorganisation, factory consolidation, and a direct-plus-distribution sales model, before becoming Japan President. Fluent in the technical, commercial, and cultural languages of the region, he specialises in aligning headquarters and local teams, and in building pragmatic, customer-led organisations in Japan. Erwin Yasvin exemplifies the hands-on leader who earns trust in Japan by showing up where problems live. His credo—"get your hands dirty"—is not metaphorical. When customers escalate issues, he goes with sales to uncover root causes and secure head-office commitments on the spot. That credibility shortens cycles in a market where 100% quality is table stakes and where the service "extra mile" extends even a decade beyond a nominal warranty. A European by training and temperament, he learned Japanese corporate practice from the inside in the early 1990s, when multilayered hierarchies still defined decision flow. Rather than railing against the pyramid, he mined its upside: leaders who rise through layers bring practical judgement and empathy for shop-floor realities. Yet he also streamlined speed by bridging headquarters and Japan—translating commercial logic, technical constraints, and customer detail into decisions the field can act on. He builds voice and pride through "poster sessions": monthly forums where team members present customers, markets, wins, and bottlenecks to peers. That design triggers nemawashi—quiet pre-alignment—and fosters cross-functional curiosity. By picking one or two ideas from each session and ensuring execution, he turns speaking up into visible impact. Decision rights sit with those closest to the market. Each salesperson owns one or two verticals—motor drives, wind, solar, energy storage, UPS—with accountability for target customers, competitive intel, product needs, and pricing. Headquarters supports with budgets for samples and after-warranty analysis, signalling trust with money. Where ambiguity or urgency is high—such as the 2022 exchange-rate shock—he decomposes the "working package" into digestible actions, avoiding paralysis. Mistakes are coached privately and framed as leadership accountability: if an error occurred, expectations weren't clear enough. Monthly one-on-ones, written agendas, and evidence-led conversations establish a durable logic chain that travels across language boundaries. Culture-wise, he neither copies a Japanese firm nor imposes a foreign pace. Instead, he articulates values—efficient workdays, transparent processes, skill development—while adapting compensation to local norms through a hybrid bonus model that blends guaranteed and performance-tied elements. Asked how outsiders should lead in Japan, Yasvin stresses credibility, example, and constancy: be present in the hard moments, don't over-promise, and speak in clear, digestible steps. In a country where consensus and detail orientation are prized, leaders win by aligning logic with respect—turning caution into momentum without sacrificing quality. Q&A Summary What makes leadership in Japan unique? Japan blends layered hierarchies with high expectations for managers to understand field-level problems. Leaders gain status less by slogan and more by track record. Consensus is built through nemawashi and formalised via ringi-sho, with detail-rich documentation that honours uncertainty avoidance while preserving quality. The upside of layers is decision empathy; the downside can be speed—unless leaders bridge across functions and headquarters. Why do global executives struggle? Many push headquarters logic without translating it into local realities: customer expectations of zero defects; service beyond written warranty; and process fidelity (e.g., traceability standards) that must integrate into Japanese customers' own systems. Leaders also misread how "pride" shows up—quietly, not publicly—and miss mechanisms (like poster sessions) that let people contribute without confrontation. Is Japan truly risk-averse? Not exactly; it's uncertainty-averse. When leaders clarify the "box" and broaden it gradually, teams will step forward. Decomposing problems (e.g., FX pass-through frameworks) turns ambiguity into executable steps. Decision intelligence—structured data, clear thresholds, defined triggers—reduces uncertainty and enables action without violating quality norms. What leadership style actually works? Lead by example; be visibly present at customer flashpoints. Push decisions to the edge (market owners), back them with budgets, and coach in private. Use structured forums to surface ideas, then implement a few to prove that speaking up matters. Keep corporate values intact (efficient workdays, skill building) while tuning incentives to local practice. How can technology help? Operational dashboards that tie customer issues to root-cause analytics, plus digital twins of power-module reliability and logistics flows, elevate conversations from anecdote to evidence. Traceability systems aligned to global standards reduce manual re-entry and delays, while decision thresholds (e.g., FX bands) automate price updates and ensure fair, consistent application. Does language proficiency matter? Helpful, not decisive. Clear logic, written agendas, data, and diagrams travel farther than perfect grammar. Leaders who frame problems visually, confirm next actions, and close the loop consistently can overcome linguistic gaps, while continuing to study Japanese accelerates trust and nuance. What's the ultimate leadership lesson? Credibility compounds. Show up in the hard moments, keep promises small and solid, convert ideas into implementation, and protect quality while increasing speed through better alignment. Over time, trust becomes a structural advantage with customers and within the team. About the Author Dr. Greg Story, Ph.D. in Japanese Decision-Making, is President of Dale Carnegie Tokyo Training and Adjunct Professor at Griffith University. He is a two-time winner of the Dale Carnegie "One Carnegie Award" (2018, 2021) and recipient of the Griffith University Business School Outstanding Alumnus Award (2012). As a Dale Carnegie Master Trainer, Greg is certified to deliver globally across all leadership, communication, sales, and presentation programs, including Leadership Training for Results. He has written several books, including three best-sellers — Japan Business Mastery, Japan Sales Mastery, and Japan Presentations Mastery — along with Japan Leadership Mastery and How to Stop Wasting Money on Training. His works have also been translated into Japanese, including Za Eigyō (ザ営業), Purezen no Tatsujin (プレゼンの達人), Torēningu de Okane o Muda ni Suru no wa Yamemashō (トレーニングでお金を無駄にするのはやめましょう), and Gendaiban "Hito o Ugokasu" Rīdā (現代版「人を動かす」リーダー). In addition to his books, Greg publishes daily blogs on LinkedIn, Facebook, and Twitter, offering practical insights on leadership, communication, and Japanese business culture. He is also the host of six weekly podcasts, including The Leadership Japan Series, The Sales Japan Series, The Presentations Japan Series, Japan Business Mastery, and Japan's Top Business Interviews. On YouTube, he produces three weekly shows — The Cutting Edge Japan Business Show, Japan Business Mastery, and Japan's Top Business Interviews — which have become leading resources for executives seeking strategies for success in Japan.

Join the hilariously chaotic hosts of the Advanced Refrigeration Podcast, Brett Wetzel and Kevin Compass, as they navigate through a sea of technical issues and Bluetooth nightmares while diving into the functionalities of Danfoss case controllers. From misadventures in Colorado to the quirks of Thanksgiving blackout dates, this episode offers a candid mix of banter and genuine expertise in HVAC troubleshooting. Explore everything from programming case controllers via Bluetooth to hilarious rants about store configurations gone awry. Packed with both laughter and valuable refrigeration insights, this episode is a must-listen for anyone in the HVAC field!

Join the hilariously chaotic hosts of the Advanced Refrigeration Podcast, Brett Wetzel and Kevin Compass, as they navigate through a sea of technical issues and Bluetooth nightmares while diving into the functionalities of Danfoss case controllers. From misadventures in Colorado to the quirks of Thanksgiving blackout dates, this episode offers a candid mix of banter and genuine expertise in HVAC troubleshooting. Explore everything from programming case controllers via Bluetooth to hilarious rants about store configurations gone awry. Packed with both laughter and valuable refrigeration insights, this episode is a must-listen for anyone in the HVAC field!

On today's show, our guest is Aaron Jagoda, a Systems Engineer in Danfoss' Innovation and Development Solutions Team. This unit specializes in hydraulic system innovation, electrification, and digital control strategies for off-highway equipment. Expanding on his talk at the 2025 iVT Expo, Aaron provides a deep-dive into this system, it's functions, and some efficiency results based on testing a mini-excavator platform. Subscribe to the Fluid Power Forum today to never miss an episode. The podcast is available on all of your favorite podcast platforms, including Apple Podcasts, Spotify, and iHeart Radio. Connect with our host, Eric Lanke, at elanke@nfpa.com. Connect with our guest, Aaron Jagoda, at aaron.jagoda@danfoss.com. Find and share more interesting fluid power technologies and unique applications using #onlyfluidpowercan, and follow podcast and other fluid power industry-related updates at @TheNFPA. #FluidPowerForum #flowcontrol #valves

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this second part of our Basics of CO2 Controls training series, we're diving into programming RDM controllers and staging compressors. This episode focuses on understanding inputs and outputs, programming controllers and mastering the fundamentals behind various manufacturers' controls, including Danfoss, Microthermal and more. Kevin shares key information on setting pressure targets, understanding response times, working with receiver interlocks, and more, all to help refrigeration technicians handle any CO2 refrigeration system more efficiently. In this episode, we cover: -Programming controllers -Understanding compressor staging and alarms -Mapping inputs and outputs -Setting compressor parameters -Safety in CO2 refrigeration systems -Dry ice formation -Managing discharge pressure and alarms -High ambient temperature strategies -Optimizing gas cooler and receiver settings -Noise control Helpful Links & Resources: Episode 340. Basics of CO2 Controls with Kevin Mullis (Part 1 of 4) Episode 170. Troubleshooting RDM CO2 Controllers w/Cody Hamm and Chris Prom Resource Data Management RDM Episode 64. CO2 Controls with RDM Resource Data Management

In this episode of HVAC TV, we sit down with Vic Marinich from Danfoss to talk all things heat exchangers—what they are, why they matter, and how they're evolving to meet the demands of modern HVAC systems.From chillers and data centers to river water cooling and refrigerant challenges, Vic breaks it all down in a way that's practical and easy to follow—even if it's been a while since you've calculated Reynolds numbers (don't worry, we don't go there).

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we're diving into electronic case controllers and valves. I share practical tips on accessing and interpreting manuals, setting up controllers, and troubleshooting common issues. We also cover control points, sensor calibration, and fine-tuning P&IDs. Investing time in learning these systems will enhance your skills and help you become a more proficient technician. In this episode, we discuss: -Electronic valves and controllers -Understanding case controllers -Specific controllers from Danfoss, Copeland, Microthermal and more -Finding and using manuals -Setting up controllers -Fine-tuning and troubleshooting -Investing in learning and development Helpful Links & Resources: Episode 257. CO2 Experts Live: Case Controllers with Kevin Mullis Episode 132. Copelands E3 Controller & CC200 Secrets: Unveiling the Top 5 CO2 Tips with Brent Cheshire Episode 282. Danfoss CO2 Controllers with Dave Yoder  

Variable frequency drives, or VFDs, have long offered the opportunity to boost the energy efficiency of rotating equipment such as pumps and fans. But when VFDs are fully integrated into a plant's control system architecture, new levels of plantwide optimization are possible. Control's Keith Larson caught up with Chad White, leader of the North America sales organization for Danfoss, and Raj Nara Yanan, product manager for Honeywell Process Solutions, at the recent Honeywell Users Group meeting in San Antonio to discuss how Honeywell's partnership with Danfoss is unlocking new possibilities.

Join hosts Brett Wetzel and Kevin Compass in this hilarious and educational episode of the Advanced Refrigeration Podcast. Brett recounts his miserable time working in the pouring rain while tackling control conversions on rooftop units in Atlanta. They navigate through setting up network connections for Danfoss controllers, battling tech woes, and hilarious hotel escapades involving 60 mph go-karts and failed golfing attempts. Perfect for HVAC professionals looking to laugh and learn about the intricacies of remote network troubleshooting and managing Danfoss systems.

Join hosts Brett Wetzel and Kevin Compass in this hilarious and educational episode of the Advanced Refrigeration Podcast. Brett recounts his miserable time working in the pouring rain while tackling control conversions on rooftop units in Atlanta. They navigate through setting up network connections for Danfoss controllers, battling tech woes, and hilarious hotel escapades involving 60 mph go-karts and failed golfing attempts. Perfect for HVAC professionals looking to laugh and learn about the intricacies of remote network troubleshooting and managing Danfoss systems.

In Part 2 of this episode of the HVAC Know It All Podcast, host Gary McCreadie is joined by Jamie Kitchen, an HVAC expert, Training and Account Manager at Danfoss. They discuss the world of TT valves for heat pumps, particularly the Danfoss TR6. Jamie explains how balance port valves work, the importance of proper leak detection, and why correct charging practices are crucial for efficiency. He also talks about the challenges with condensing pressures and why new technology is improving system reliability. Jamie's insights help technicians avoid common mistakes and enhance system performance. Jamie Kitchen talks about how balanced port valves help HVAC systems maintain steady pressure, especially during temperature changes. He explains why proper leak detection and charging techniques are key to avoiding equipment damage. Gary and Jamie discuss the importance of keeping condensing pressures stable to ensure the system runs efficiently. Jamie also shares how modern technology, like a variable-speed fan, helps solve old issues with air conditioning systems. They both agree that precision in setup and maintenance is essential for long-term reliability. Jamie explains that TT valves, like the Danfoss TR6, help HVAC systems maintain stable pressure, especially when conditions change. He says proper leak detection and accurate charging are vital for preventing damage to compressors. Gary notes that modern systems have new tech, like variable-speed fans, to keep pressures steady. They both agree that many older methods are inefficient or can cause issues, but balancing port valves and precision in maintenance make a big difference in system performance and longevity. Expect to Learn: How TT valves like the Danfoss TR6 help stabilize HVAC systems. Why accurate leak detection and charging are critical for compressor health. How modern tech, like variable-speed fans, improves system reliability. What issues can arise from unstable condensing pressures? Why are balanced port valves key for steady operation and longer equipment life? Episode Highlights: [00:32] - Introduction to Part 02 with Jamie Kitchen [02:02] - Accurate Leak Detection & Compressor Protection [05:35] - Balance Port Valves & Condensing Pressure Stability [09:32] - How Balance Port Valves Stabilize Pressure in Variable Conditions [12:21] - Importance of Subcooling for Proper Charging [19:20] - Correct Placement and Positioning of the Sensing Bulb [21:02] - Breakdown of the TR6 Valve and Its Multi-Refrigerant Capabilities [23:17] - Closing Thoughts and Upcoming Van Video with Gary and Jamie 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/ property.com: https://mccreadie.property.com Follow the Guest Jamie Kitchen on: LinkedIn: https://www.linkedin.com/in/jamie-kitchen/ Danfoss: https://www.linkedin.com/company/danfoss/ 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/

In this episode of the HVAC Know It All Podcast, host Gary McCreadie is joined by Jamie Kitchen, an HVAC expert, Training and Account Manager at Danfoss, to talk all about TX valves for heat pumps. Jamie breaks down how these valves work in both heating and cooling modes and why they need to handle refrigerant flow in two directions. They discuss the parts of a TX valve, how pressure and temperature control the flow, and why Danfoss uses stainless steel in their design. Jamie also explains how proper installation helps prevent common issues and why external equalizers are important in many setups. It's a must-listen for anyone working with heat pumps. Jamie Kitchen from Danfoss joins Gary to talk about TX valves used in heat pumps. Jamie explains how these valves control refrigerant flow when switching between heating and cooling. He breaks down how the valve parts work together, using pressure and temperature to open and close. They also talk about why heat pumps need special valves, and how check valves help flow in both directions. Jamie explains why Danfoss uses stainless steel bulbs and tubes to stop leaks and handle rough conditions. It's a helpful talk for techs who want to understand heat pump valves better and install them correctly. Jamie explains how TX valves in heat pumps work like traffic lights for refrigerants, letting it flow the right way in heating or cooling. He shows how the valve uses pressure from a sensing bulb, a spring, and the coil to open or close. Jamie and Gary talk about why using an external equalizer helps the valve work better, and how check valves let refrigerants move both ways. Jamie also shares why Danfoss uses stainless steel parts; they last longer and don't break or leak. It's a smart guide for techs who want to understand these valves and avoid system issues. Expect to Learn: How TX valves work in both heating and cooling modes. Why heat pumps need valves that flow in both directions. How pressure and temperature control valve opening and closing. Why using an external equalizer helps the valve feed right. How stainless steel parts make the valve last longer and stay leak-free. Episode Highlights: [00:44] - Introduction to Jamie Kitchen - Part 01 [02:02] - What Makes Heat Pumps Different: Reversing Valve Basics [04:48] - How TXVs Work: Refrigerant Flow & Check Valve Role [06:25] - TXVs in Southern U.S. vs. Cold Climate Installations [10:36] - Why External Equalizers Help TXVs Feed Properly [16:05] - The Three Forces in a TXV: Bulb, Spring & Evaporator Pressure [19:23] - What's Inside the Bulb? Refrigerant Mix for Better Control [22:07] - Why Danfoss Uses Stainless Steel for Bulbs & Tubes 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/ property.com: https://mccreadie.property.com Follow the Guest Jamie Kitchen on: LinkedIn: https://www.linkedin.com/in/jamie-kitchen/ Danfoss: https://www.linkedin.com/company/danfoss/ 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/

Join the Refrigeration Mentor Hub here Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses In this episode, we uncover the ins and outs of TX valves, including installation, sizing, settings, and troubleshooting. Joining us is Jamie Kitchen from Danfoss, who shares his vast knowledge on TX valves and the importance of proper setup to avoid common pitfalls. We dive into the principles of superheat, subcooling, and the differences between internal and external equalized TXVs. You'll also learn how to size valves correctly, the significance of maintaining airflow, and the best practices for adjusting superheat.  In this conversation, we discuss: -Understanding TX valves and A2L refrigerants -Proper TX valve setup -A2L misconceptions -Refrigerant blends and global warming potential -Superheat and subcooling -TX valve operation principles -Increasing superheat for stability -Advanced troubleshooting techniques -Understanding airflow -Identifying low charge issues -Proper sizing and capacity of valves -Adjusting superheat correctly Helpful Links & Resources: Episode 16. TXV/TEV - A discussion about Thermostatic Expansion Valves Episode 202. Better Evacuations, A2L Myths and the Modern Mindset Around Refrigeration with Jesse Stewart of NAVAC Episode 293. Transitioning to A2L Refrigerants with Danilo Gualbino https://www.danfoss.com/en/

In this episode of "Taking the Temperature on HVAC," Jamie, John, and Jorg explore the different types of compressors offered by Danfoss, including reciprocating, scroll, screw, and Turbocor compressors. They discuss the operational differences between these compressors, such as the pulsation in reciprocating compressors versus the smooth operation of scroll compressors, and the factors influencing compressor selection, like efficiency, temperature range, and application needs. The hosts emphasize that choosing the right compressor depends on the specific system requirements, from low-temperature refrigeration to high-capacity heat pumps, providing valuable insights for HVAC professionals looking to optimize their systems.

In this episode of Did You Know? The ESCO HVAC Podcast, Clifton sits down with Dean Groff, Sales & Service Manager at Danfoss, to unpack the rapid rise of CO₂ as a leading refrigerant in the commercial refrigeration and HVACR space. From the regulatory push behind low-GWP technologies to the real-world performance of CO₂ in grocery and retail environments, Clifton and Dean explore what contractors, engineers, and educators need to know to stay ahead.They discuss the technical challenges, training gaps, and equipment innovations shaping the transition—along with practical tips for educators and technicians preparing for this next phase. Plus, hear how heat recovery, smart controls, and Danfoss's mobile CO₂ training units are helping bridge the knowledge gap.HVACR educators, technicians, and decision-makers—this episode dives into why CO₂ isn't just coming, it's already reshaping the industry.

Join Brett Wetzel and Kevin Compass on this episode of the Advanced Refrigeration Podcast, where they dive deep into the week's escapades, including installing and troubleshooting VFDs set high in the air, navigating the quirks of Danfoss icad and CCM valves, and battling unforeseen issues with CO2 stores. They also share tips for overcoming common HVACR challenges, like high-pressure alarms, low receiver levels, and dealing with troublesome solid-state relays. Whether you're facing the world's smallest terminal blocks or trying to keep your cool with heat-radiated sensors, this episode has something for every refrigeration pro.

Join Brett Wetzel and Kevin Compass on this episode of the Advanced Refrigeration Podcast, where they dive deep into the week's escapades, including installing and troubleshooting VFDs set high in the air, navigating the quirks of Danfoss icad and CCM valves, and battling unforeseen issues with CO2 stores. They also share tips for overcoming common HVACR challenges, like high-pressure alarms, low receiver levels, and dealing with troublesome solid-state relays. Whether you're facing the world's smallest terminal blocks or trying to keep your cool with heat-radiated sensors, this episode has something for every refrigeration pro.

In this episode of the HVAC School Podcast, Trevor Matthews and Bryan dive deep into the transformative potential of artificial intelligence (AI) in the refrigeration and HVAC industries. They explore how AI is not a new concept in their field, discussing how manufacturers like Copeland, Sporlan, and Danfoss have long incorporated AI-driven tools and repositories of information into their applications. The conversation goes beyond simple technological novelty, positioning AI as a powerful learning and troubleshooting assistant for technicians. The discussion highlights AI's role as a supportive tool rather than a job replacement. Trevor emphasizes that AI cannot physically perform trade-specific tasks like climbing ladders or brazing pipes, but it can provide invaluable guidance, explain complex procedures, and help technicians quickly access specialized knowledge. Particularly beneficial for less experienced technicians working late-night shifts or challenging service calls, AI can serve as an instant reference point, helping to jog memory and provide step-by-step troubleshooting guidance. Bryan and Trevor both stress the importance of approaching AI with curiosity and critical thinking. They advise against treating AI-generated information as absolute truth, instead recommending users ask follow-up questions, verify information, and use AI as a conversational learning tool. Trevor is actively developing a specialized AI platform for refrigeration training, working to train the system with industry-specific knowledge and real-world experience to create a more accurate and helpful resource for technicians. Key Topics Covered: AI's current applications in refrigeration and HVAC industries How AI can support technician learning and troubleshooting Strategies for effectively using AI tools The importance of maintaining technical knowledge while using AI Trevor's ongoing development of a specialized refrigeration AI training platform Practical examples of AI use in technical and non-technical scenarios Addressing concerns about AI potentially "dumbing down" the industry   For those interested in participating in Trevor's AI beta test, email info@refrigerationmentor.com with the subject line "Looking to be included in the beta test for the refrigeration training AI." You can also visit the Refrigeration Mentor website at https://refrigerationmentor.com/.  Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool.  Purchase your tickets or learn more about the 6th Annual HVACR Training Symposium at https://hvacrschool.com/symposium. Subscribe to our podcast on your iPhone or Android.   Subscribe to our YouTube channel.  Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android