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Employment/Education Highlights However, during the time period while the compressor is not engaged I need to circulate more air on the second floor or it becomes stale. If it goes out of spec then on "very cold days" (when the furnace runs a lot) it could trigger an automatic shut off when the exchanger doesn't end up getting cooled enough, FWIW. Your R value shouldn't change, and daily average wind speed and precipitation should have a minimal effect on the convection coefficient. Trane Repair and Replacement Guide - Cost List 2022 ASE Certified Master Auto Technician Shay Tilander is a senior editor at Family Handyman. Remove the air handler. Tied from R to BK in air handler. How do I check if this furnace switch the blower to second speed. Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA To understand how this works, let's look at the wiring on your furnace's blower. R and BK are tied together. (Heat transfer wasn't one of my favorite classes in college - I focused more on dynamic systems, sorry.). So if you are actually moving 1250 CFM then you are at 357 CFM/ton, which is a good setup for dehumidifying. Locate your thermostat on the page and click System Mode. But the 'real' one will be the one connected with a twist on cap to the fan motor. Most of these are on the bottom left of the control board. Understanding and How to Change Blower Speed on a Furnace Air - YouTube Therefore for anybody thinking to adjust their blower speed to a low setting be mindful and use caution and listen carefully as to how the system is running. The heat exchanger warms up the incoming air and a blower or air handler sends the warm air throughout the home. The problem is, the furnace control module doesn't use a separate speed when the unit is running in continuous FAN mode. Connect the common wire to the neutral terminal of the furnace's control board. The wires that are used will determine the speed settings that the motor will run at. Use tab to navigate through the menu items. To learn more, see our tips on writing great answers. The MERV scale rates filters from 1 to 16. Therefore I again adjusted the speed upward a bit and that seemingly has corrected the problem. Since I first posted this thread, my installer called Trane to get an answer to my original question. In order to measure air flow you could use a flow capture hood, a rotating vane anemometer, or a hot wire anemometer. How to change blower speed on furnace - Trane XB 2018 Ryan W 794 subscribers Subscribe 185 44K views 4 years ago A quick description on how to change the blower speed on your furnace. Usually, gas furnaces have a temp rise of 50F. . Yes--the efficiency of the heat exchanger will decrease. Not every AC or furnace filter will have an arrow printed on the frame, but when it does the arrow indicates the direction the filter must face. Why is there a voltage on my HDMI and coaxial cables? I could imagine possibly fewer "warm up cycles" (which also include having to power on the fan) might save something (as well as lower fan speed=less electricity)but as others have noted, while its running (esp. (Without enclosing my house in a climate-controlled bubble). At night with an . Note also that there is always just "one blower" but that blower may or may not be variable speed, etc. Secure the old speed wire by twisting a wire nut over the end. A MERV rating speaks to the filters ability to capture large particles. Luci is a contributing writer for DoItYourself.com. If the blower motor hums, check the blower fan to ensure that it spins freely. Step 4: Take out the inducer motor. Select Climate from the blue menu on the left side of the page. Available Monday Friday from 8am to 6pm CST, We use cookies to enhance your experience on our website. Carefully disconnect the wires from the coolant terminal, which is located on the back of the unit. Website operating submitted to our "DoItYourself.com Community Forums". and as I recall, you have the HW VP IAQ stat. And I'd guess you're not supposed to push it too close to the limits as things may change slightly over time (filter will get dirtier, blades dirtier). According to the company, the slower circulation speed reduces energy consumption by 75%. Its time to clear the air. This control board is out of a variable speed furnace with a modulating gas valve that has a variable speed inducer motor. My first thought was that the unit was oversized, but I figured out how to check the DIP switch settings. These blower motor versions can be found in furnaces, air handlers, and packaged units. homininet 8 mo. One of these wires will be coming from the thermostat and the other will go to the outside unit. Can you increase the speed of an ECM AC blower? By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Changing the Blower Speed on a Furnace - YouTube The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. -The "AC/HP CFM Adjust" is the airflow volume to be set for system, efficiency, comfort. In the example of an ECM 3.0 with a 4 pin connector, the wires are not switched or moved to adjust the airflow settings. Thanks for the reply. Then switch the jumper to your desired speed. Most require that you open a box (2 screws?) Does lowering the blower speed of a forced-air furnace lower its efficiency? Trane Furnace blower runs all the time - Repair Clinic Air filters are measured by Minimum Efficiency Reporting Values (MERV). Locate the wire for the new speed setting ("medium" or "low"), remove the wire nut from its end and use wire strippers to strip 1/2-inch of insulation from the end of the wire. Mutually exclusive execution using std::atomic? I'm getting a new s9v2. During the awake hours I Hold the fan speed at either low or medium. It shouldn't take more than a few minutes a day to record the data anyway. STEP-BY-STEP REPLACEMENT GUIDE Turn off air conditioning / heat from the thermostat. 1995-2023 MH Sub I, LLC dba Internet Brands. How To Troubleshoot A Trane Furnace | American Home Water & Air For instance, here's the procedure to change a furnace's fan speed with a PSC blower motor: Use a multimeter to measure the resistances of each speed wire. Slowly flashing shows your furnace is on and does not need heat. The best answers are voted up and rise to the top, Not the answer you're looking for? View our Privacy Policy here. I think the best bet would be to actually test it for a few months and see. -The BTU/HR size is selectable between 48,000 42,000 36,000 or 30,000 BTU/HR. Helm is an accomplished DIY craftsman. Access the control board. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin?). If 1600 CFM is too high of an airflow volume and only 1200 CFM is needed because the system is a 36,000 BTU/HR air conditioner, we can swap the yellow with the black wire on the motor module. I.e., maybe more heat is now escaping through the exhaust. We welcome your comments and It is important to know that you cant go by a normal color code to determine the speeds. The factory may only set two or three of these colors as actual speeds. The blower fan on this blower has four speeds. If the pressure switch is functioning properly . Make sure power is off when doing any adjustment. Another key difference is that the circulate . I'm not in enhanced mode. Does lowering the blower speed of a forced-air furnace lower its We are no longer supporting IE (Internet Explorer). Stage 3 Aux Heating. *Based on third party testing of particle removal efficiency down to 0.3 microns (2005). I understand the reason for slowing the air to remove humidity. You will also see the red E icon under Emergency . This lower blower speed enhances Click On under Emergency Heat. Design Engineer/Project Manager for injection molded plastic company New XV80 Trane furnace makes noise when blower runs at low speed. In support of this: I found the mfr owner's manual for my furnace and in it, it states, "if you have an air-conditioning coil installed, you should switch the furnace blower speed to high to accommodate the decreased air-flow caused by the cooling coil in the plenum.". If you really wanted to be scientific, you could perform an experiment and post the results here. When it is flashing fast there is heat throughout your home. Additionally, they can be identified by the presence of a removable module/bell on the end of the motor. The BTU/HR capacity or tonnage of the air conditioning system should be included within the model number of the outdoor unit. Your OP was a noise complaint. Only swap these two wires. Cookie Notice To adjust the dip switches, turn the power off and take a flat head screw driver to lightly push the dip switches to the on/off desired position for each numbered switch. This means that any time cooling is called for by the control board, 24v will be present on the #4 terminal of the motor module to turn the motor on and to run at roughly 1200 CFM. This is NOT a user servicable item. With a one-gallon-per-hour burner nozzle that saves me AT-LEAST 30% on fuel oil plus another 20-30 min of blower run time or at least 30-50% run time savings. A 1.5 ton AC unit may not be large enough to cool the . lower efficiency furnace) it is drafting exhaust up the flue which can't be good. Duct Dynasty: Taking the Guesswork Out of Fan Speed Settings How can I change the speed of the blower on the Trane model X39641170 video below! By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. How to Convert a Furnace Blower Fan Into a Stand Alone Fan, What to Do When a Furnace Blower Fan Won't Start, How to Replace the Resistor on Air Conditioner Blower Fans. A 90 percent-plus furnace needs 150 cfm per 10,000 Btu of input. Now that would turn the blower speed down on you. I found one glued to the back of my furnace door, one in the manual, and maybe one on-line too. Then switch the jumper to your desired speed. Most homes have a standard split-system air conditioning unit with two main fans. The low pitched whine stops when fan is in high speed. I have also measured that on low speed my furnace requires AT-LEAST 1 hour of constant running to raise my home temp by 6 deg F. On high speed it takes 30-40 min. *NOTE* If you attempt this, be absolutely sure that you have no power going to your system, especially before changing wires. Its a common occurrence in the heat of the summer or the cold of the winter one room doesnt get as warm or as cool as the others. It had been set on the higher speed, but that was too harsh, so I lowered it to the slower speed. Asking for help, clarification, or responding to other answers. to this site, and use it for non-commercial use subject to our terms of use. Trane XL80 blower motor part number? - DIY Home Improvement Forum To clean a reusable filter, remove the filter from the air cleaning device. Once you have located the panel, remove it. enjoys making jams and jellies during fruit season along with cooking meals. (Trust me, the worst thing that happens to me on the job is having inconclusive results due to insufficient data collection during an expensive and time-intensive study.) Note: (High voltage is always going to your blower motor along with the common for the 24 volts. Air Filters remove dust, lint, pet dander, and other pollutants so you can breathe easier knowing your indoor air quality is better with Trane. I got the sv96 100k btu 2stage furnace with variable fan and the xl18 4ton ac unit. Trane XR80 Troubleshooting After examining the flashing system you should check the green light speed. If the instructions are not with the furnace, you can look up the model number of the unit and search for the installation manual via a google search. you will get the better dehumidification with the lower setting. Batch split images vertically in half, sequentially numbering the output files, Using indicator constraint with two variables. how to change fan speed on furnace to get more heat from your unit HVAC STARTUP TECHNICIAN 4.6K views 1 year ago Trane XV80 or XC80 Variable Speed Motor Blower Fan Not Working - $9. Trane XV80 Blower speed settings - HVAC-Talk: Heating, Air I have a Carrier furnace/heat pump with an expensive control thermostat that talks directly to the heat pump. Why is my furnace blower running at low speed? After understanding what speed each tap is programmed for, we can make proper airflow adjustments. Then, carefully switch it to the setting of your choice and push it back into the control board. @Dave: Those were my thoughts as well. With heating oil at $4.50/gal I can assure you without measuring anything that running my blower on low is NOT more efficient from a $$ perspective. It can happen for lots of reasons, from improper furnace sizing and dirty filters to air duct insulation failures to the room being farthest from the furnace. How to adjust the fan speed and the new Trane furnaces model - YouTube Boost Your Furnace Output With This Simple Trick A second filter location for most HVAC systems and furnaces is the air handler portion of the system. Available from Trane Dealers in select locations. Reddit and its partners use cookies and similar technologies to provide you with a better experience. There are two types of fan motors found in furnaces: 1.) How to change "Fan On" speed on a variable speed blower Now that its gotten cold, we've noticed that several of the heat register barely have any air coming out of them. This video is to show how you can figure out the blower speed setup in your HVAC system, and what you can do do adjust said speeds. In my searching I have found out that there is a stupid little thermistor that burns out on the motor circuit board (it's a variable speed blower), and replacing it is a permanent fix.. The most important factor is temperature differential - the difference between the inside temperature and outside temperature. You should now see a red E icon in the System Mode screen next to Auto and Heating modes. It offers three settings: 525 RPM for saving energy, 900 RPM for heating, or 1100 RPM for air conditioning. When the summer air conditioning season transitions to the fall heating season, increase the blower speed by switching the wires on the cool and heat terminals. All Logos & Trademark Belongs To Their Respective Owners, Maintaining temperature over a longer period of time is more efficient than getting a room to temperature quickly, A lower fan speed ensures your heat pump will run for longer periods of time which is required for the system to go into whats called a defrost mode (. Proper duct sizing can resolve the issue you are having. No problem with the boiler. How to Fix a Pressure Switch Error on a Trane | Hunker He currently has a home shop where he sharpens and rebuilds saws, repairs lawn mowers, mobility scooters, hydraulic jacks, and anything else that comes along. Change the speed. Adjusting the Airflow Speed on ECM Blower Fan Motors! 'Fan On' Speed for Trane AH - DoItYourself.com Community Forums Also related, with for instance a variable speed furnace, since it runs continuously and reduces "cold spots" you might find you can set it at a lower degree setting than the off/on kind. The Trane XR80's heavy steel insulated cabinet has two benefits: Holds in more of the heat that you pay for Decreases operating noise Because of its heavy steel insulated cabinet, the XR80 can experience as little as 1% of air leakage. We have a Trane XL80 furnace manual in pdf version that you can download for free. Be sure to check out our previous article on ", If you want to learn about refrigerants and how they work in a system, check out our. Any updates on variable speed fan control? : ecobee - reddit Move the high-speed wire to low. Typically the colors are: White = neutral speed Red = low speed Yellow = medium speed Black = high speed The arrow should face the direction the air is flowing. Trane TAM7 DIP switch settings Heating Help: The Wall In terms of heat pumps, running the external blower faster may reduce i2r copper losses and hysteresis iron eddy current losses. Test the new speed. A lower fan speed ensures your heat pump will run for longer periods of time which is required for the system to go into what's called a defrost mode ( watch this video on defrost) Running the fan too high can mean your heat pump will not run long enough in order to kick into a defrost cycle. This can be done through an independent dehumidistat or through a thermostat's DEHUM terminal (if available). Connect and share knowledge within a single location that is structured and easy to search. The wires are several different colors. So How Do We Adjust Fan Speed? Disconnect between goals and daily tasksIs it me, or the industry? I want to increase volume flow if possible. How to tell which packages are held back due to phased updates, Linear Algebra - Linear transformation question. This trick only works on gas furnace systems with a multi-speed blower. It helps to have over 50 years of farming and ranching experience. This will help prevent injury and. Using a filter that's too small or too large will allow debris particles to pass into the HVAC unit, potentially damaging or blocking the system. My heat is running cold! Trane Furnace - Furnace Blower Not Running - Repair Parts | Repair Clinic Match the positions to the desired pictures within the manufacturer's installation literature. A dirty air filter can cause your HVAC system to go into overdrive and result in costly energy bills. Recently I did a blower speed adjustment on the 2nd floor air. It accounts for the amount of air in circulation for precision airflow. Are there downsides to this. Connect with our Customer Care team about your products, warranties, and dealer concerns. In Dungeon World, is the Bard's Arcane Art subject to the same failure outcomes as other spells? Third-stage auxiliary heating for heat pumps and multi-stage furnaces. There is no mechanism to change this. To help ensure you're breathing healthier air and supporting your heating and cooling system to operate at an optimal level, follow the simple steps in this video to change your furnace filter assuggested. My main questions are. 81K views 2 years ago In this video, we are changing the blower speed on a Trane XR 95 furnace so that the forced air furnace circulates more air on heat mode. Air Conditioner + Furnace Matched Systems, Air Conditioner + Air Handler Matched Systems, Does Your Air Conditioner Smell? He also builds custom tools for metal working. On this control board, there are multiple adjustments for the airflow speeds. This covers speed adjustment on a PSC motor. I connected a second thermostat to the circuit board to run the blower (R to G). Variable speed blower control - HVAC-Talk: Heating, Air & Refrigeration To understand how this works, lets look at the wiring on your furnaces blower. It wasn't the noise that was bothering me, it was the desert-like sensation of swirling dry air. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. CFM stands for "cubic feet per minute." Thus, my blower can't be using that much electricity on high. Top 10 Spots! The blower is set for 400 cfm for a 4 ton outdoor unit, and comfort-R is not enabled (all factory). This will help prevent injury and damage to the furnace fan. On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. When the system calls for heat and the inducer fan begins to run, check each pressure switch terminal. It was working a week ago but just recently when it runs it blows out cold air. So clearly, running your furnace blower on low is only more efficient IF-and-ONLY-IF the cost of the heating fuel is much much less then the cost of the electricity to run the blower that little bit faster. Fortunately, theres a simple fix if you look at your furnaces Integrated Furnace Control (IFC) board. You have to switch the wires to the blower motor. I'm in the process of re-wiring my blower to run on high with the furnace. Realizing this after a very long period of investigation, I eventually turned up the fan speed dial; this seemed to correct the problem initially, until one night a week later lying in bed I heard it do the same thing but but after a much longer run time. http://www.inspectorsjournal.com/Forum/topic.asp?TOPIC_ID=8998&, We've added a "Necessary cookies only" option to the cookie consent popup. I want it for the same reason as cliff--the top floor of my house is colder than the main floor and I'd like to even things out by moving more air around. I'm also a little concerned that this furnace might be a little undersized for our house (if I understand correctly, its a 100 BTU unit). Control Humidity by Optimizing Fan Speed | Priority Energy You need to find the wires that determine blower speed inside your furnace. bean. with a wiring harness for the fan. The system might not work properly. However, if your HVAC blower motor isn't too badly damaged, the technician may be able to clean and repair it so you won't have to incur the cost of a replacement. AC Service Tech HVAC Training is made possible by continued support from our visitors, customers, and support from these Sponsors! Questions of a Do It Yourself nature should be submitted to our "DoItYourself.com Community Forums". I guess you are talking about a 3 speed direct drive motor with 1/2 shaft. The boiler is feeding a DHW sidearm and furnace plenum HX. I was reading the Trane XL824 thermostat installation and setup manual. Which thermostat wires control the furnace fan? Ilook forward to responding to many more! He has several years experience as a professional cabinet builder, and he is an accomplished auto repairman, having operated an auto repair business for many years. problems contact webmaster@doityourself.com. You may freely link to this site, and use it for non-commercial use subject to our terms of use. For this reason, pair your Variable Speed AC unit with one of the following components: Hyperion TAM9 Air Handler, XC 80 Gas Furnace, XC 95M Furnace, or S9V2. Should I upgrade to a pcm br compatible thermostat? That said the contractor has no real incentive to get it right. On this board, pins 3, 4, and 5 on the SW1/1 through SW1/8 dip switch block have to do with air flow. See our Privacy Policy for more information. He is also an HVACR Contracting Business owner of 16 years and holds an NJ HVACR Master License. Again, this can usually be found in the upper-left corner. Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. In humid climates, 350 CFM per ton can be selected in order to remove more moisture from the air. If there isnt one in your home, turn it off at the breaker box. The blower/fan seems to be running way to fast. Adjusting Furnace Fan Speed | DoItYourself.com Tools that we use: www.amazon.com/shop/acservicetech. I assume you are speaking about dip switch settings. Dealers can answer questions, help you find the right products for your home, and repair your system. The constant torque/multispeed motor will have the smallest module. The air handler houses the fan and fan motor and is usually located in the basement or attic. Bundle Packs are a great way to save and get faster shipping! Questions of a Do It Yourself nature should be There is no humidistat. The main difference is that the fan ON setting means that the fan is set to run as long as the furnace is switched ON. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Many gas-fired, high-efficiency furnaces also save on the electricity required to power the blower motor, though this savings is not factored into the AFUE rating. Connect the black wire to the manometer. Changing the fan wire connection between the fan-on relay and the fan motor, selecting a high, medium, or low speed right on the fan motor itself Changing jumper positions on the control board (printed circuit board shown below) in the air handler Changing a dip switch or small slider switch position provided on some air handler control boards Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? If you have an HVACR relatedquestion, drop it in the comment section of one of theYouTube videos at theAC Service Tech YouTube Channel and I will do my best to respond. Choose the Trane owner guide thats specific to your unit for detailed instructions on locating and changing yourairfilter. These adjustments can be made by pulling the single wire connector and moving it to another single tab positioned horizontally in each row. Iappreciate all the comments, questions, and responses that Ireceive from each of you. Possibly you could do the same here (turn down blower and gas). How exactly could I test this? The company offers a variety of furnaces to suits the needs of every home. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Trane s9v2 should thermostat control blower speed? - HVAC-Talk: Heating