This furnace features the common White-Rodgers Intell-Ignition circuit board. If power is getting to the blower motor, but the motor does not run, the motor may be burned out. Narrowing that hysteresis loop will: Leading to a smaller Hysteresis loop, increasing motor efficiency by reducing iron eddy current losses. If you do, you may not have enough air flow over the heat exchanger, resulting in overheating and eventually a shorter exchanger life span. Since I first posted this thread, my installer called Trane to get an answer to my original question. These blower motor versions can be found in furnaces, air handlers, and packaged units. Proper returns are rarely a thought. This will cause the "Cool" terminal on the control board to be connected to to the #4 terminal on the motor module via the black wire. I know I need to replace a dying blower motor in a 1992 Trane . The hot air will rise and heat the floor from beneath, a DIY form of radiant floor heating. 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. ECM Multi-Speed Blower Motor (Broad Ocean Type), For an ECM blower motor with wires exiting the module (shown above), the speed is changed at the control board by moving the colored wire terminals. I.e., maybe more heat is now escaping through the exhaust. It provides quieter and more even and comfortable heat than a conventional furnace and doesnt consume electricity unnecessarily. 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. Heat exchange takes time. 3.5 x 400 = 1400 CFM. A second filter location for most HVAC systems and furnaces is the air handler portion of the system. Top Ten Interview Tips to Land that HVAC/R Job! One fan is inside the house, and one is outside the home. These two losses comprise the magnitude of heat losses. Invention prototypes are another of his many accomplishments. He maintains fruit and nut trees along with helping his wife with a vegetable garden. BarnArtist, locate the wiring schematic on your furnace. Wires from the 16 pin plug are connected to this board. (Heat transfer wasn't one of my favorite classes in college - I focused more on dynamic systems, sorry.). Soak the filter in warm water in a bathtub or sink. I simply am unable to put my hands on the schematic. To recap: The service technician might be able to increase (or decrease) the blower speed, but that would probably lower the AC's cooling efficiency. You need to find the wires that determine blower speed inside your furnace. The wire's color will determine the speed settings that the motor will run at. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. If the blower motor hums, check the blower fan to ensure that it spins freely. Are there downsides to this. It offers three settings: 525 RPM for saving energy, 900 RPM for heating, or 1100 RPM for air conditioning. The ohm meter should read very close to zero. Of course all that heat was lost because of the ridiculous number of vents in our foundation. Fortunately, theres a simple fix if you look at your furnaces Integrated Furnace Control (IFC) board. Is it Covered Under Homeowners Insurance or a Home Warranty? This helps the XR80 conserve more of the heat it produces. The blower/fan seems to be running way to fast. Adjusting the Airflow Speed on ECM Blower Fan Motors! Select your preferred wire with the warm temperature and connect it to the 'heat' port. Air Filters remove dust, lint, pet dander, and other pollutants so you can breathe easier knowing your indoor air quality is better with Trane. 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. She has experience researching and creating a wide range of home improvement and garden projects, and especially enjoys learning about fireplaces and exterior design. Turn off the power source that is connected to the furnace blower. 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. If the terminals are present at the motor module (ECM X-13) you can switch speeds at the blower motor location. If you have any questions or need assistance, please contact Trane Home Customer Support via email at help@tranehome.com or call 1-877-288-7707, Monday-Friday 9 . Step 3: Find the furnace draft inducer. During the awake hours I Hold the fan speed at either low or medium. I'm getting a new s9v2. Its time to clear the air. The NET difference of the above two figures is your savings or cost. H.R. 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. Does that have any impact on the efficiency of the unit? Does lowering the blower speed of a forced-air furnace lower its efficiency? The heat exchanger warms up the incoming air and a blower or air handler sends the warm air throughout the home. This will help prevent injury and. Why is there a voltage on my HDMI and coaxial cables? Air filters are typically found behind the return vent door, often located in the ceiling or wall in the central portion of your home. 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. 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. For example, on a package unit, only taps 3, 4 and 5 may be programmed. Usually there will be three speeds ranging from 40 to 100% of airflow. You can verify the actual CFM by measuring the TESP of the system and comparing it to the manufacturer's airflow data sheet. 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. They do this by coupling a sophisticated, programmable thermostat to a variable-speed motor. Most residential furnaces were installed by the low bidder. Test your knowledge with our 1,000 question workbook along with the answer key! First, make sure that power is getting to the motor. The blower speed for a gas heater is selected so that it is comfortable for the building occupant but also so that the Delta T (Temp Rise) does not continue to rise. Once you have located the panel, remove it. Variable Speed units continuously communicate with each other and your Trane thermostat to provide optimal efficiency. The furnace operates for two minutes or so before it shuts down. This will increase the number of air changes per hour (ACH) in the house and also help compensate for a more restrictive whole home air filter like a MERV 16 being installed. For 240v units, both the L and N are hots. During the awake hours I Hold the fan speed at either low or medium. This covers speed adjustment on a PSC motor. That said the contractor has no real incentive to get it right. The video will also explain other safety measures, as well as some for a demonstration which I will show. you will get the better dehumidification with the lower setting. I'm also going to go through and make sure there are no visible leaks or damage to them. On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. Motor is an ECM and it makes a low pitched whine sound when in CIRC or when the blower is ramping up or slowing down to stop. 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 (. I'm in the process of re-wiring my blower to run on high with the furnace. No problem with the boiler. The company offers a variety of furnaces to suits the needs of every home. air flow is inadequate to match demand and duct size. The best answers are voted up and rise to the top, Not the answer you're looking for? Most of these are on the bottom left of the control board. Comfort R should be off if you are using . The blower motor also begins running, but at low rpm. But the 'real' one will be the one connected with a twist on cap to the fan motor. Connect with our Customer Care team about your products, warranties, and dealer concerns. How to Lower the Ouptut of Oversized Furnace. However, a higher MERV rating may not be best for your system. I'm not sure exactly the formula I'd use to normalize the results, but I'm pretty confident I could come up with some correlation if I had the data to play with. These adjustments can be made by pulling the single wire connector and moving it to another single tab positioned horizontally in each row. Locate your thermostat on the page and click System Mode. Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace? 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. I want to do what is best. 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. But, in looking up the manual for this furnace (TUD1B100A9361), it looks like there are 4 blower speeds. For more information, please see our Reddit and its partners use cookies and similar technologies to provide you with a better experience. There is no mechanism to change this. A MERV 16 filters particles at a level near that or a HEPA. If your home has multiple HVAC systems, there will likely be at least one air filter for each unit. There are two types of fan motors found in furnaces: 1.) This will allow you to access the control board. ECM Multi-Speed Blower Motor (Genteq X-13). Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? The most important factor is temperature differential - the difference between the inside temperature and outside temperature. Mine. To learn more, see our tips on writing great answers. In Dungeon World, is the Bard's Arcane Art subject to the same failure outcomes as other spells? Warmup.com mentions that it was the original design of radiant floor heat systems by the Romans. Most furnaces have a relay switch on the door cover. You may freely link Connect the black wire to the manometer. He owned and operated a manufacturing business building Compact Utility Vehicles for homeowner use. Change the speed. He has been DIY since childhood and is now a septuagenarian. I miscalculated. 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. Test the new speed. -The "AUX Heat" makes sure that there is enough airflow when elect strip heat is called. The house has a 3 ton trane xl20i and an xv80 (4 ton max). Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin?). Recently I did a blower speed adjustment on the 2nd floor air handler and thought to show how it can be done. When he's not enjoying family time with his wife and three boys, he loves tinkering with projects and geeking out on electronics. Now that would turn the blower speed down on you. Stage 3 Aux Heating. This is an old thread but I am going to post my experience: I have an oil furnace, at some point someone (a furnace tech) adjusted the blower to run slower thinking it would provide more hot air by slowing the air to heat up more before supplying the house. Mutually exclusive execution using std::atomic? Step 3: Adjust the Pulley on the Blower Drive Motor 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. How to use Slater Type Orbitals as a basis functions in matrix method correctly? A dirty air filter can cause your HVAC system to go into overdrive and result in costly energy bills. maryland_irisman 14 years ago As suggested by the others, you should balance the air flow and the fan cfm should be matched to the system and duct system. I installed a Thermo Control 2000 boiler and first fired it up this Friday. to this site, and use it for non-commercial use subject to our terms of use. Step 3. (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.) Switched it to heat (in which case the furnace board is in control of the fan, not the stat) - got fire, no fan. So How Do We Adjust Fan Speed? 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. the module must be a trane furnace model specific programmed and is available separate from the motor. The fan speed is very low when not heating/cooling. I think the best bet would be to actually test it for a few months and see. There are also red and brown furnace speed wires. I know I need to replace a dying blower motor in a 1992 Trane XL80 gas furnace. 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. The manual document include instructions and informations on how to troubleshoot the system. Remove both of these wires and wire nut them together. ago. Divide the rated Btu input by 10,000. The automatic feature rarely kicks in once at set point. I know that it has been done. 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. Use tab to navigate through the menu items. A properly fitted filter can also trap unwanted, and oftentimes unseen, pollutants from the air in your home, including: Start with the return vent. By pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. No: you will not save on gas/oil costs by running your blower on low. Most of these are on the bottom left of the control board. Connect and share knowledge within a single location that is structured and easy to search. The gas is shut off and the induction motor stops running while the blower . A MERV rating speaks to the filters ability to capture large particles. Website operating problems contact Webmaster. This is done so that the maximum amount of heat is gained in the building from the refrigerant. Questions of a Do It Yourself nature should be submitted to our "DoItYourself.com Community Forums". charts are usually found on the air handler inside door to controls. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Second-stage auxiliary heating for heat pumps and multi-stage furnaces. It is about 1300-1400 sq feet, but then the basement was finished at some point, more or less doubling the square footage. 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. Slowly flashing shows your furnace is on and does not need heat. 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. 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. That will give you the most reliable results for your particular system. Disconnect between goals and daily tasksIs it me, or the industry? You will need to look at what the programmed speed designations are for M1/M2/M3/M4/M5 on the wiring diagram of the HVAC unit. So if you are actually moving 1250 CFM then you are at 357 CFM/ton, which is a good setup for dehumidifying. 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). Carefully disconnect the wires from the coolant terminal, which is located on the back of the unit. Learn more about Stack Overflow the company, and our products. I have a Carrier furnace/heat pump with an expensive control thermostat that talks directly to the heat pump. If you really wanted to be scientific, you could perform an experiment and post the results here. The heat exchanger can be overheated and burned out if the blower does not remove enough heat. The factory may only set two or three of these colors as actual speeds. This lower blower speed enhances 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. Cross country truck driver -- over dimensional freight Thus, my blower can't be using that much electricity on high. Allow the filter to completely dry before returning it to the device. 1 to 1.5 hours | Install the new motor, adjust it (multispeed and variable speed blowers only), run and test the furnace Installing a blower wheel with the motor shouldn't affect installation time, since the old wheel typically has to be removed to replace the motor. It had been set on the higher speed, but that was too harsh, so I lowered it to the slower speed. The variable speed furnace delivers the proper amount of airflow based on the heating and cooling needs of your home. The remaining colored wires will be default speeds. Put the air handler back. (Variable & Multi-Speed Types), In this HVAC training article, we will be discussing how to adjust the fan speeds on an indoor, In order to measure air flow you could use a flow capture hood, a rotating vane anemometer, or a, I hope this helps you understand how to adjust the airflow speed on ECM Blower Motors! The arrow should face the direction the air is flowing. Blower on delay settings, which evidently have an impact on the duration and speed of the blower fan. 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). The higher the MERV rating, the better the filter is at capturing specific pollutants from the air. How does a furnace work? The manometer tells you the CFM number. Black: High; Yellow: Medium-high ; Blue or brown: Medium-low; Red: Low; I suppose I probably won't do so it, but out of curiosity what kind of downside might one run into? Use dish soap and a soft-bristle brush or sponge to remove stuck-on debris. Copyright Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Well, it does make sense that lowering the blower speed would reduce its electrical consumption. The control board has relays that regulate the voltage to each component in the furnace. 4TEE3C10A1 That is excessivly loud. Now that its gotten cold, we've noticed that several of the heat register barely have any air coming out of them. Slowing the blower speed reduced the noise but I take it you would still like it to be more silent. thanks in advance. Follow us on Facebook for Quick Tips and Updates here! The BTU/HR capacity or tonnage of the air conditioning system should be included within the model number of the outdoor unit. Sometimes you have to add more ducts to achieve the proper pressure and velocity. Yes--the efficiency of the heat exchanger will decrease. The boiler is feeding a DHW sidearm and furnace plenum HX. Your new AC unit is not collecting water (yet) because the anticondensation coating hasn't been compromised (yet); and that's a good thing. Choose the Trane owner guide thats specific to your unit for detailed instructions on locating and changing yourairfilter. Then switch the jumper to your desired speed. Changing your HVAC and furnace air filter is a vital part of home maintenance. Where To Find R-22 & R410A Leaks on AC Units! Most homes have a standard split-system air conditioning unit with two main fans. To understand how this works, let's look at the wiring on your furnace's blower. This will increase the number. When you open the panel, it kills the power to the furnace. PSC - The Permanent Split Capacitor Motor is still the most commonly used. The MERV scale rates filters from 1 to 16. The SW2 indicates the air conditioning size. In order for the filter to work properly, the right size is crucial. Each is associated with a different blower speed. Helm is an accomplished DIY craftsman. rev2023.3.3.43278. Move the high-speed wire to low. Step 2: Create a Safe Workspace When working with any unit connected to electricity, it's important to turn off the power to prevent electrocution and damage to your furnace. My question was whether the efficiency of heat transfer thru the exchanger would be somewhat compromised due to the reduced airflow. What sort of strategies would a medieval military use against a fantasy giant? I'm not in enhanced mode. and our Connect the common wire to the neutral terminal of the furnace's control board. Craig is a licensed Teacher of HVACR, Sheet Metal, and Building Maintenance in the State of New Jersey of the USA. (Without enclosing my house in a climate-controlled bubble). 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 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! 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. I Tried a Hands-Free Dog Leash, and I No Longer Dread Walking My Dog, This Simple Trick Can Refresh Your Entire Home, 30 Spring Cleaning Tasks to Add to Your Checklist, Do not Sell or Share My Personal Information. 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. Most require that you open a box (2 screws?) The installation instructions for this furnace are needed in order to be able to know how to set these dip switches. The arrow should face the direction the air is flowing. So I continued to play around with different combinations tonight. 01 - Trane Furnace Control Board. Here's hoping for some good answers. 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. Yes, there is a way to bring up the speed on the air handler.. On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. This can be done through an independent dehumidistat or through a thermostat's DEHUM terminal (if available). Press Apply to save and exit. So the blower motor is dead. @Dave: Those were my thoughts as well. low would be 350 CFMs/ton, medium 400 CFMs/ton, high 450 CFMs/ton. There are several tutorials on Youtube about how to do this step for specific inducer motor brands. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. Please note that mounting bracket consists of top and bottom brackets joined by 6 metal screws (fig.6.9). CFM stands for "cubic feet per minute." Measured the temperature of the air before the coil and after the coil and used DeltaT (change in temperature) to determine the blower setting. All rights reserved. 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. Now, I haven't done the measurement to learn how much electricity my blower uses on low vs high. You will also see the red E icon under Emergency . Locate the speed wires. The ignitor glows. When the system calls for heat and the inducer fan begins to run, check each pressure switch terminal. I recently had have a trane xl 90 want to adjust speed of blower fan blower motor has 4 wires white going to neutral black unhooked blue to high speed yellow to I have a Trane Indoor Air Handler Model No. STEP-BY-STEP REPLACEMENT GUIDE Turn off air conditioning / heat from the thermostat. Check back regularly as we are always updating and improving thiswebsite! This BTU/HR capacity should be used to set the CFM for the indoor blower motor. HVAC system for small church has twin Trane XR90 units installed in 2009 to replace a unit with a much larger single blower. There is another way to wire this, but I can not find it back.. Your AC or furnace is designed for a specific type of filter. Additionally, they can be identified by the presence of a removable module/bell on the end of the motor. 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. video below! Running your furnace fan all the time isn't exactly a bad thing. The gas kicks on and is lit by the ignitor. Recently I did a blower speed adjustment on the 2nd floor air. In humid climates, 350 CFM per ton can be selected in order to remove more moisture from the air. 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. I guess you are talking about a 3 speed direct drive motor with 1/2 shaft. Your R value shouldn't change, and daily average wind speed and precipitation should have a minimal effect on the convection coefficient. Check out our free Quizzes to test your knowledge here! In a gas furnace, (the most common type of furnace used in homes) natural gas is ignited in the burner and the flames heat up the heat exchanger. If you know what you are doing, it is very simple to adjust the speed of your furnace fan. Another key difference is that the circulate . When you purchase through links on our site, we may earn commissions at no cost to you. To begin, turn off the power to your furnace. Typical setups include these wire colors with associated blower speeds. In the pictured example above, if the #5 speed tap is programmed for 1600 CFM and #4 is programmed for 1200 CFM and #5 is presently connected to the "Cool" terminal on the control board via the black wire, we know that the unit is running at around 1600 CFM as long as the TESP across the unit is not too high. In order to determine or change the speed, check the wiring diagram of the furnace/air handler/package unit that the motor is installed in. After understanding what speed each tap is programmed for, we can make proper airflow adjustments. Dave. 3 of the wires will likely terminate with just a twist on cap. Secure the old speed wire by twisting a wire nut over the end. Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. This value is then multiplied by 150 cfm to obtain the required airflow for the furnace in heating operation. Turn off power at the main electric panel. 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). For business related inquires email us at. bean. . Available from Trane Dealers in select locations. Cut the wire's terminal connector off with wire cutters. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. These are not switched off but are live all the time. Heres What It Means, Why You Should Monitor the Humidity Levels In Your Home. It is a Trane S8X1 single stage furnace and air handler, paired with an XR16 3 ton AC unit. . It wasn't the noise that was bothering me, it was the desert-like sensation of swirling dry air. Unlike a conventional systemwhere the furnace goes on, blows hot air into the house at full force for a few minutes, and then shuts offa variable-speed or variable-capacity system runs the blower for longer periods at lower speeds. Typical setups include these wire colors with associated blower speeds. The continuous fan is marked SW3. By regularly changing your filter, you can improve your indoor air quality and extend the life of your heating and cooling system. 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