We measure superheat (generally) on the suction line exiting the evaporator coil and it helps us understand a few things. Using GPS to Track HVAC Techs and Trucks (Bryan Orr) - Duration: 5:27. Removing refrigerant will increase the superheat by feeding less of the coil with saturated (mixed liquid and vapor) refrigerant. HVAC Career Now. Another Question Bryan started HVAC School to be free training HVAC … Details About Us. 12 Followers 245 Plays. He is the founder of HVACRSchool.com and the HVAC School Podcast. Measuring superheat along with suction pressure gives us the confidence that the compressor will be properly cooled. HVACR Videos. They also bring in relevant guests to give their expert opinions on these issues and products. That is relatively common especially if the pilot was kept off for a long time. RTFM Soft Gildan T-Shirt. In this episode we review application based system selection considerations for VRF/VRV systems. Understand the effects of temperature and humidity changes . HVAC School Trucker Cap. Keep in mind that some systems have a screen built into the piston housing inlet that can also block up. There are many examples of teaching using metaphor to help someone get a grasp of how something works without being EXACTLY correct. For Techs, By Techs. Regular price $19.50. It is directional, meaning it can only be installed one way with the cone (tapered side) pointed at the evaporator and the other side pointed at the liquid line. If everything is good and sufficient mV’s come back to the valve and it still won’t open, then yes, that valve might be bad. This is important because it ensures that we are not running liquid refrigerant into the compressor crankcase. That is high efficiency equipment, energy (heat) reclaiming, waste heat use, limiting heat loss, renewable energy sources, controls and methods that lead to efficient operation…etc. In this series of articles we will explore the, “What should my _______ be?” questions one at time and hopefully learn some things along the way. This is done in TXVs by means of an internal or external check valve but with a piston, the piston itself is allowed to slide in the housing allowing restricted flow in one direction and unrestricted flow in the other. “Bryan Orr is a great industry podcast,” Headings said, referring to Orr’s HVAC School. Listen to HVAC School - For Techs, By Techs episodes free, on demand. HVAC School 12,872 views. The bulk of my work is residential gas heating, mainly high-efficiency furnaces, and gas fireplaces. The air around us is all superheated! HVAC Rocket Science in Red. HVAC systems are designed and installed by degreed or certificated technicians to promote clean, comfortable, efficient airflow in offices, homes, apartments, and commercial buildings. When the superheat is higher we know that the saturated refrigerant is not feeding as far through the coil. HVAC systems are designed and installed by degreed or certificated technicians to promote clean, comfortable, efficient airflow in offices, homes, apartments, and commercial buildings. Smart HVAC Products. The amount of knowledge I have gained and been able to pass on to the technicians I work with is unbelievable. HVAC Career Now. The Trane style has a much smaller size and is directional. Interest. Bryan is the Father of 10 kids and husband of a Jedi Princess. – What is the relationship between the pressures in the collector box of the secondary exchanger and the pressure switch? Bryan Orr Co-Founder and VP Of Service at Kalos Services, Bryan has been involved in HVAC training for over 13 years. Rocket Science Cap. As oilable motors have become extinct I see fewer and fewer techs pulling the blower housing. This certainly helps us remember but it isn’t really how it works. HVAC School - For Techs, By Techs. You can check blower mounting bolts and set screws as well as blower alignment and balance more easily. Plus, when you order through my link, it helps me to continue to offer you lots of free stuff. Always an enjoyable and educational podcast from the very basics to the advanced. There are three common piston designs I see regularly and while different manufacturers may use them I will group them by the manufacturers I know them by. Tech Tips ; This article was written by Senior Refrigeration tech Jeremy Smith. Front seated closes the valve and shuts off flow through the system at that point while remaining open to the port. In his spare time Bryan doesn’t have spare time. Bonus and ad-free content available with Stitcher Premium. This series isn't my typical Garage content, but air conditioning systems are something that fascinate me. Above we show two 75VA transformers with 24V secondary windings. Not Now. You may also be able to use a mirror and flashlight but you usually won’t see much due to the heat exchanger being in the way. The installers I worked with often forgot to put in the correct size. Bryan Orr is the vice president at Kalos Services Inc. and founder of the HVAC School. If the piston fails to seat properly it can overfeed the evaporator in the same way it would if the system had a larger bore size than it should. In Florida, there are not many gas furnaces, At least not as many as up North. You will not pay more when buying a product through my link. When teaching it we speak as though the air is a sponge and the hotter the air the bigger the sponge. They should read 0v to one another and 24v to common. This position provides full operational flow through the valve body but is closed to the access port. Bonus and ad-free content available with Stitcher Premium. The physical exterior dimensions of the piston must be the same as all the others for that brand/series otherwise it will not fit properly. Employees at HVAC School Bryan Orr. The young man was only 27 and he was shocked, but he was used to being shocked. It does interact with it as the molecules move and bounce around and the percentage of water vapor in the air does impact the mass/weight of the air by volume (water vapor weighs less than dry air) so there are certainly impacts to the makeup of the air based on moisture content. It is only the internal bore diameter that changes. This type uses seals toward the end of the cone to help prevent refrigerant bypass and it also uses an o-ring to seal the “chatleff” style housing. If it’s just a standard 24v valve with 2 or 3 terminals (Common + hot or common + low and high solenoids) just pull the wires off (or connector) at the valve and you have to check for 24V on the wire across common and hot. The percentage of the air around us that is moisture can vary from almost zero In cold arctic & Antarctic climates to nearly 4% in hot, tropical climates. Thank you for this podcast and thank you for making the trade a better place. Secondly, the nitrogen has no special properties that allow it to “grab” moisture. A piston doesn’t just fail, if one does have an issue it’s either the wrong size or something got into it and got stuck in it or caused it to stop seating properly. Running millivolt DC thru them will work, but as soon as you have a bit of resistance in the switch contacts, that voltage will not get through. Most “active” metering devices are designed to output a set superheat (or tight range) at the outlet of the evaporator coil if the valve is provided with a full liquid line of a high enough pressure liquid (often at least 100 PSIG higher than the valve outlet / evaporator pressure). If there were to be one major theme for the products in the industry, it would be a growing focus on energy use. Even with the valve disconnected if your board is OK it will still send 24V in that wire at the proper time in the sequence of operation (i.e. Isolate section by section and ohm it out. Here are some reasons you may want to consider doing it more often. HVAC Rocket Science in Red. I have always struggled with the theory behind getting cold from hot. Get in there and look carefully at the wheel. Later I learned all there was to know about sizing and replacing pistons. Including recorded tech training, interviews, diagnostics and g… HVAC School - For Techs, By Techs (podcast) - Bryan Orr | Listen Notes Personal Blog. Listen on Apple Podcasts. Bryan Orr. When the temperature of water vapor is higher, a higher percentage of the air by volume can CONTAIN water vapor, but the air itself isn’t what is holding it. For the collector box/pressure switch: Certified Spoken English Class Language Learning Lessons. Low Performance managen. Bryan interviewed Steve Rogers and Gary Nelson from The Energy Conservatory discussing Blower Door ACH50 measurements vs. Natural Infiltration rates. Bryan Orr Co-Founder and Co-Owner of Kalos Services / Host and Nerd at HVACRschool.com Head Master Engelking ... HVAC School | 6,564 followers on LinkedIn. In fact, it is so important that I advise that you only do this if you have two identical model transformers. iPhone. See more of HVAC School on Facebook. For the gas valve/board dilemma: Popular Items. The easiest way to listen to podcasts on your iPhone, iPad, Android, PC, smart speaker – and even in your car. 2. Based on the nature of the questions I figured it would be better to ask an experienced furnace tech. The post Top 10 HVAC Tech Tips for 100K appeared first on HVAC School. Some low-pressure nitrogen or compressed Air to get % off or free shipping once the piston housing inlet can! A podcast with Bryan Orr Techs get goes something like this to consider doing it often... The wires are in a pressure drop and an undesired restriction similar to what happens an. I checking for meter on the receiver ” Headings said, referring to Orr ’ s, check your flame! ( who is Bryan Orr - HVAC School for Techs now and use School... The Father of 10 kids and husband of a Jedi Princess all superheated real training for HVAC (,. Enjoy listening and wrapping my brain around it Sam Behncke and of Bryan. 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