how to change fan speed on a trane furnace how to change fan speed on a trane furnace

Choose the Trane owner guide thats specific to your unit for detailed instructions on locating and changing yourairfilter. Remove the air handler. Warmup.com mentions that it was the original design of radiant floor heat systems by the Romans. The best answers are voted up and rise to the top, Not the answer you're looking for? The factory may only set two or three of these colors as actual speeds. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. 3.5 x 400 = 1400 CFM. Connect with our Customer Care team about your products, warranties, and dealer concerns. Copyright Cut the wire's terminal connector off with wire cutters. The arrow should face the direction the air is flowing. A MERV rating speaks to the filters ability to capture large particles. To begin, turn off the power to your furnace. If you want to learn about refrigerants and how they work in a system, check out our Refrigerant Charging and Service Procedures for Air Conditioning book . Reddit and its partners use cookies and similar technologies to provide you with a better experience. This X-13 model shown above designates the speeds taps as numbers, not as colors, to denote each speed. If the blower motor is burned out, replace it. The fan speed is very low when not heating/cooling. I have a Carrier furnace/heat pump with an expensive control thermostat that talks directly to the heat pump. Adjust the fan speed, and if you're still experiencing problems, contact your local American Standard Customer Care dealer. The automatic feature rarely kicks in once at set point. You will also see the red E icon under Emergency . Recently I did a blower speed adjustment on the 2nd floor air handler and thought to show how it can be done. DoItYourself.com, founded in 1995, is the leading independent Step 3: Find the furnace draft inducer. These blower motor versions can be found in furnaces, air handlers, and packaged units. Website operating problems contact Webmaster. HVAC system for small church has twin Trane XR90 units installed in 2009 to replace a unit with a much larger single blower. American Standard air handler troubleshooting Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Be sure to check out our previous article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor" if you haven't read it yet! The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. CFM stands for "cubic feet per minute." @Dave: Those were my thoughts as well. Put the air handler back. I needed to go the opposite direction and increase fan speed. This trick only works on gas furnace systems with a multi-speed blower. There is no mechanism to change this. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. I.e., maybe more heat is now escaping through the exhaust. I'd go with logging temperature differential (inside temp - outside temp) vs. energy consumption every day for a month with the blower on high and then for a month with the blower on low. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Make sure power is off when doing any adjustment. Changing your HVAC and furnace air filter is a vital part of home maintenance. 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. The blower energy draw at a lower speed will be offset by the loss in fan wheel inertia. I have a Trane Variable Speed Air Handler (TWE049E13FB2). The noise is there in heat or AC. I've gone through the process of adjusting the manual zone louvres on the main ducts (and on registers) and checked them with my camera for blockages. The A/C will run according to the thermostat settings. There is a modification that will allow the VS fan to run on high speed at all times while in the AC mode and with the fan "ON" mode. I'm also going to go through and make sure there are no visible leaks or damage to them. For 240v units, both the L and N are hots. It wasn't the noise that was bothering me, it was the desert-like sensation of swirling dry air. Note: (High voltage is always going to your blower motor along with the common for the 24 volts. Measured the temperature of the air before the coil and after the coil and used DeltaT (change in temperature) to determine the blower setting. Yes--the efficiency of the heat exchanger will decrease. If you know what you are doing, it is very simple to adjust the speed of your furnace fan. Use dish soap and a soft-bristle brush or sponge to remove stuck-on debris. But I'm reasonably sure it uses less to run on high vs low then it uses to run on low vs OFF. 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. R and BK are tied together. 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. The problem is, the furnace control module doesn't use a separate speed when the unit is running in continuous FAN mode. Your R value shouldn't change, and daily average wind speed and precipitation should have a minimal effect on the convection coefficient. Step 2: Remove the panel cover of the furnace. That said the contractor has no real incentive to get it right. According to the manufacturer's documentation, your furnace should have a 3 or 4 speed blower motor. Air filters should be changed every 90 days unless otherwise indicated on the packaging or by the manufacturer. Mutually exclusive execution using std::atomic? I'm getting a new s9v2. There is no humidistat. To start, ECM stands for Electronically Commutated Motor which means that the motor is capable of electronically controlling it's own speed, and therefore CFM, according to the desired output. bean. Then switch the jumper to your desired speed. Turn off the power source that is connected to the furnace blower. The gas kicks on and is lit by the ignitor. - Answered by a verified HVAC Technician . I want to do what is best. Since hot air is much lighter . Variable Speed Blower Motor ( Genteq 2.3, 16 pin connector). The installation guide clearly describes how to set airflow for heating mode and cooling mode. I hope this helps you understand how to adjust the airflow speed on ECM Blower Motors! On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. 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. 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. 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. DoItYourself.com, founded in 1995, is the leading independent home improvement and repair website. and our 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. Helm is an accomplished DIY craftsman. Heating, Cooling, Air Conditioning, Ventilation and T-Stat Controls, 3-Speed, 4-Wire Ceiling Fan Switch Wiring. A 90 percent-plus furnace needs 150 cfm per 10,000 Btu of input. You may freely link I know I need to replace a dying blower motor in a 1992 Trane XL80 gas furnace. The low pitched whine stops when fan is in high speed. As a side note, lowering furnace (heating) blower speed should apparently only be done if it doesn't reduce the "heat rise" (difference in temperature between the intake and supply air, if I understand it, also known as the "delta T") past the manufacturer recommended value for that furnace. Blower on delay settings, which evidently have an impact on the duration and speed of the blower fan. After a bit of research, (translated: "mad google skills") I found an article claiming that lowering the blower speed may increase efficiency. For business related inquires email us at. thanks in advance. Air Filters remove dust, lint, pet dander, and other pollutants so you can breathe easier knowing your indoor air quality is better with Trane. 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. The question is would the trade-off be in favor of less blower energy consumption and more loss through exhaust, or more blower energy consumption and less loss through exhaust. Questions of a Do It Yourself nature should be (FYI Filter was clean and furnace was recently serviced all prior to my initial investigation of the short cycling). The most important factor is temperature differential - the difference between the inside temperature and outside temperature. Each is associated with a different blower speed. The company offers a variety of furnaces to suits the needs of every home. He maintains fruit and nut trees along with helping his wife with a vegetable garden. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. Usually there will be three "speeds" ranging from 40 to 100% of airflow. This helps the XR80 conserve more of the heat it produces. These connected to (park) terminals, which are not used and simply hold those two additional wire speeds. If a clear distinction between the blower speeds isn't obvious in the data, then you're probably not going to save much money either way, so go with what's most comfortable for you. Step 3: Adjust the Pulley on the Blower Drive Motor 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. Is it Covered Under Homeowners Insurance or a Home Warranty? Tied from R to BK in air handler. BS in Industrial Technology, If you know what you are doing, it is very simple to adjust the speed of, Before you begin this process it is a good idea to make sure that no power is going to the fan. Connect the black wire to the manometer. However, I like the continually run the fan to even out air temperature in the house. Variable Speed Blower Motor (Genteq ECM 3.0, 4 pin connector). By clicking '. If you have suggestions or comments they are welcome. Second-stage auxiliary heating for heat pumps and multi-stage furnaces. 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. If the ohm meter comes back with an open line reading, the switch is bad and needs replaced. Here's what to record, in order of importance: The last two (5 and 6) aren't as important, but more data is always better. video below! Remove the motor and mounting bracket. Connect Y2 on thermostat to BK on furnace, and Y2 on the Condensing unit Cut R-BK jumper at Furnace Install R - O jumper at Furnace Connect W2 on thermostat to W2 on furnace (or alternatively, jumper W1 to W2 at furnace and confirm that dip switches are set correctly for Stage Delay if furnace is desired to automatically control heating stages) 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. My first thought was that the unit was oversized, but I figured out how to check the DIP switch settings. You need to find the wires that determine blower speed inside your furnace. 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. Move the high-speed wire to low. Your AC or furnace is designed for a specific type of filter. Variable speed furnaces only operate at . A MERV 16 filters particles at a level near that or a HEPA. 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. one room doesnt get as warm or as cool as the others. -The "AUX Heat" makes sure that there is enough airflow when elect strip heat is called. #3. This is done so that the maximum amount of heat is gained in the building from the refrigerant. 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. The higher the MERV rating, the better the filter is at capturing specific pollutants from the air. Remove two screws from each bracket leg holding the motor. Match the positions to the desired pictures within the manufacturer's installation literature. A slim, removable cover will reveal the filter location. For more information, please see our I think the best bet would be to actually test it for a few months and see. So the blower motor is dead. Only swap these two wires. These three are connected to the "Cool", "Heat", and "Fan" terminals on the control board. We have a Trane XL80 furnace manual in pdf version that you can download for free. You have to switch the wires to the blower motor. Before you begin this process it is a good idea to make sure that no power is going to the fan. If the blower motor hums, check the blower fan to ensure that it spins freely. Does Nest utilize all the benefits of a communicating furnace, Low speed furnace fan blower motor will not shut off, How to calculate efficiency of old Westinghouse furnace VS new variable speed Furnace. PSC - The Permanent Split Capacitor Motor is still the most commonly used. 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). charts are usually found on the air handler inside door to controls. You could also use the Temp Rise Formula which you can learn about in our "HVAC Temp Rise Formula used to Measure Airflow CFM" video. Various advertisements for variable speed high efficiency furnaces call them "more energy efficiency" (note also the difference between a variable speed blower and a high efficiency furnace, they're separate, for instance you can have a variable speed blower on a low efficiency furnace). Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. . But the 'real' one will be the one connected with a twist on cap to the fan motor. 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. I can unsubscribe and opt-out from future communications at any time. It would have no affect on the Heat settings. Possibly you could do the same here (turn down blower and gas). Turn off the emergency HVAC shutoff switch Remove top and bottom cover panels on the air handler / furnace unit (fig.5.1). Third-stage auxiliary heating for heat pumps and multi-stage furnaces. In his particular case it was "too much volume" of air so I presume just moving air filters isn't enough (typically you'd need to adjust blower level AFAICT). I am currently heavily invested in studying and learning the subject as I commit myself to reducing my winter energy costs this year. It is a Trane S8X1 single stage furnace and air handler, paired with an XR16 3 ton AC unit. Radiant floor heat web sites are mysteriously silent on this simple and cheap modification of pre-exisiting systems to accomplish the same goal. Published: 05/19/2021 Author: Craig Migliaccio, About the Author: Craig is the owner of AC Service Tech LLC and the Author of the book Refrigerant Charging and Service Procedures for Air Conditioning. Standard blower motors operate at a single speed and cost around $450 to replace, including parts and labor, while variable-speed motors cost $600 and up. Trane XR80 Troubleshooting After examining the flashing system you should check the green light speed. Meanwhile, the Circulate setting is a hybrid and auto that keeps the fan running throughout heating cycles and then again for a few minutes every hour even when the furnace is off. We welcome your comments and If you remove the common and place it on another terminal, it can burn out your motor not how you want the new furnace season to begin. 4TEE3C10A1 That is excessivly loud. She has experience researching and creating a wide range of home improvement and garden projects, and especially enjoys learning about fireplaces and exterior design. When you open the panel, it kills the power to the furnace. Does lowering the blower speed of a forced-air furnace lower its efficiency? Now, I haven't done the measurement to learn how much electricity my blower uses on low vs high. Wires from the 16 pin plug are connected to this board. Most furnaces have a relay switch on the door cover. Each is associated with a different blower speed. The house has a 3 ton trane xl20i and an xv80 (4 ton max). If power is getting to the blower motor, but the motor does not run, the motor may be burned out. *NOTE* If you attempt this, be absolutely sure that you have no power going to your system, especially before changing wires. There are also red and brown furnace speed wires. How exactly could I test this? 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. If you really wanted to be scientific, you could perform an experiment and post the results here. Narrowing that hysteresis loop will: Leading to a smaller Hysteresis loop, increasing motor efficiency by reducing iron eddy current losses. Tools that we use: www.amazon.com/shop/acservicetech. Mine. Top 10 Spots! I think that when it is in enhanced mode the fan only runs at 50%, you can try changing your dip switches to see. Remember that a heat pump in heating mode will need to run with roughly the same airflow speed as during AC mode even though it may not be comfortable for the building occupant. I am just clueless, could it be the thermostat (really old) or something that is going to cost a billion dollars to fix? This furnace features the common White-Rodgers Intell-Ignition circuit board. Top Ten Interview Tips to Land that HVAC/R Job! *Based on third party testing of particle removal efficiency down to 0.3 microns (2005). Locate your thermostat on the page and click System Mode. Now that its gotten cold, we've noticed that several of the heat register barely have any air coming out of them. 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. 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 (. But I guess my question is, can the air flow problem really be a simple as upping the blower speed? I'll edit my answer and include the exact parameters I'd record every day for a thorough study. Privacy Policy. Air filters are typically found behind the return vent door, often located in the ceiling or wall in the central portion of your home. Continue reading to learn how to lower the fan speed. Luci is a contributing writer for DoItYourself.com. I suppose I probably won't do so it, but out of curiosity what kind of downside might one run into? Batch split images vertically in half, sequentially numbering the output files, Using indicator constraint with two variables. Select your preferred wire with the warm temperature and connect it to the 'heat' port. Turn off power at the main electric panel. I guess you are talking about a 3 speed direct drive motor with 1/2 shaft. Of course all that heat was lost because of the ridiculous number of vents in our foundation. The video will also explain other safety measures, as well as some for a demonstration which I will show. 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. I have posted an inquiry under the Air Conditioning forum. Trane. The noise of forced air is annoying. 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 "Continuous Fan" refers to when the G terminal is powered for the fan only to run. Options are, for example, 4 minutes at 80%, or 30 seconds at 50%. Well, it does make sense that lowering the blower speed would reduce its electrical consumption. For homeowners who want to upgrade rather than replace an existing furnace, Emerson Electric offers an exclusive replacement blower motor called the Mark Z that can be set by the homeowner on a continuous, slower-than-normal speed. The S8X1 blower has 9 speeds. The following list refers to each adjustment starting from the bottom and moving upward. Test the new speed. A description of how to change motor speeds with a multiple speed fan motor on an IFC controlled furnace.This video is part of the heating and cooling series of training videos made to accompany my websites: www.graycoolingman.com and www.grayfurnaceman.com to pass on what I have learned in many years of service and repair. To understand how this works, let's look at the wiring on your furnace's blower. Slowly flashing shows your furnace is on and does not need heat. This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". Related: a two stage furnace works by actually shooting less gas out, which might improve its efficiency. Your OP was a noise complaint. Learn more about Stack Overflow the company, and our products. The SW2 indicates the air conditioning size. What actually happened was that it caused the furnace to short cycle, running for about 4.5 minutes then shutting off and immediately turning on again over and over until it reached the set point. See our Privacy Policy for more information. Here's hoping for some good answers. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. He built every permanent building on his current homestead and did all the plumbing and electrical work. Check out our free Quizzes to test your knowledge here! If you do, you may not have enough air flow over the heat exchanger, resulting in overheating and eventually a shorter exchanger life span. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? The only alternative is to raise the discharge temperature. Use tab to navigate through the menu items. Dealers can answer questions, help you find the right products for your home, and repair your system. I'm not in enhanced mode. The gas is shut off and the induction motor stops running while the blower . I was reading the Trane XL824 thermostat installation and setup manual. The blower/fan seems to be running way to fast. When the humidity is high for what its set at. 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. 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. Invention prototypes are another of his many accomplishments. H.R. Certified Welder Step 3. Most of these are on the bottom left of the control board. I have another question about my new Trane XV95 Furnace. home improvement and repair website. I miscalculated. If the terminals are present at the motor module (ECM X-13) you can switch speeds at the blower motor location. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin?). (Without enclosing my house in a climate-controlled bubble). you will get the better dehumidification with the lower setting. Questions of a Do It Yourself nature should be submitted to our "DoItYourself.com Community Forums". On most control boards there will be a jumper that is marked to show that it controls the speed. When your AC unit is working properly, the blower inside your furnace or AC will blow cold air.The cold air is sent through ducts to the living areas and then returns air to be cooled by the evaporator coil. Most homes have a standard split-system air conditioning unit with two main fans. http://www.inspectorsjournal.com/Forum/topic.asp?TOPIC_ID=8998&, We've added a "Necessary cookies only" option to the cookie consent popup.