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). The system also accounts for blocked vents and dirty furnace filters, and adjusts fan speed as needed to compensate. 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 NET difference of the above two figures is your savings or cost. No need for direct trane replacment motor. If you have suggestions or comments they are welcome. It is a Trane S8X1 single stage furnace and air handler, paired with an XR16 3 ton AC unit. The constant torque/multispeed motor will have the smallest module. ASE Certified Master Auto Technician Top 10 Spots! 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. 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. Comfort R should be off if you are using . Cookie Notice On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. Typical setups include these wire colors with associated blower speeds. 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. Match the positions to the desired pictures within the manufacturer's installation literature. American Standard air handler troubleshooting Asking for help, clarification, or responding to other answers. Connect the ohm meter to the pressure switch. 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. Put the air handler back. View our Privacy Policy here. The gas kicks on and is lit by the ignitor. This is NOT a user servicable item. How to use Slater Type Orbitals as a basis functions in matrix method correctly? The house cools off quick - too quick - and feels humid (not sure of the rh%). How to tell which packages are held back due to phased updates, Linear Algebra - Linear transformation question. If the pressure switch is functioning properly . During the awake hours I Hold the fan speed at either low or medium. We are no longer supporting IE (Internet Explorer). Top Ten Interview Tips to Land that HVAC/R Job! The blower motor also begins running, but at low rpm. If you really wanted to be scientific, you could perform an experiment and post the results here. Shay Tilander is a senior editor at Family Handyman. lower efficiency furnace) it is drafting exhaust up the flue which can't be good. Ilook forward to responding to many more! Thoroughly rinse the filter. I have a Trane XV90 propane furnace with a variable speed blower. I know I need to replace a dying blower motor in a 1992 Trane XL80 gas furnace. I miscalculated. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. When the system calls for heat and the inducer fan begins to run, check each pressure switch terminal. The airflow adjustments on this board are pictured below. The continuous fan is marked SW3. But I guess my question is, can the air flow problem really be a simple as upping the blower speed? For more information, please see our Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. Another common place with a schematic is on the back of the blower fan door. By pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. Air filters are measured by Minimum Efficiency Reporting Values (MERV). @Dave: Those were my thoughts as well. A MERV rating speaks to the filters ability to capture large particles. The induction motor begins running. Air filters should be changed every 90 days unless otherwise indicated on the packaging or by the manufacturer. However, I like the continually run the fan to even out air temperature in the house. 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. Typical setups include these wire colors with associated blower speeds. enjoys making jams and jellies during fruit season along with cooking meals. I want to increase volume flow if possible. 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. 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. Yes: you will save electricity costs by running your blower on low. Connect the black wire to the manometer. 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. 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. According to the manufacturer's documentation, your furnace should have a 3 or 4 speed blower motor. Heating, Cooling, Air Conditioning, Ventilation and T-Stat Controls, 3-Speed, 4-Wire Ceiling Fan Switch Wiring. This will help prevent injury and damage to the furnace fan. Note: (High voltage is always going to your blower motor along with the common for the 24 volts. According to the company, the slower circulation speed reduces energy consumption by 75%. Remove two screws from each bracket leg holding the motor. one room doesnt get as warm or as cool as the others. I just had a Trane system installed last week and I've been very happy with it! Radiant floor heat web sites are mysteriously silent on this simple and cheap modification of pre-exisiting systems to accomplish the same goal. 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. Tied from R to BK in air handler. 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. The arrow should face the direction the air is flowing. In terms of heat pumps, running the external blower faster may reduce i2r copper losses and hysteresis iron eddy current losses. 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. #3. 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. Cross country truck driver -- over dimensional freight When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. Sometimes you have to add more ducts to achieve the proper pressure and velocity. Tools that we use: www.amazon.com/shop/acservicetech. When it is flashing fast there is heat throughout your home. Heat exchange takes time. I.e., maybe more heat is now escaping through the exhaust. I do know that my entire furnace runs safely on a 15amp breaker with the blower on high, the burner running, the humidifier running, and the water pump to empty the humidifier running. Connect the common wire to the neutral terminal of the furnace's control board. Can a furnace with a variable speed blower be used in a multistory house? On my furnace the schematic showed there were three speed settings. The arrow should point toward the unit. Certified Welder I'm also going to go through and make sure there are no visible leaks or damage to them. So the blower motor is dead. with a wiring harness for the fan. You have to switch the wires to the blower motor. I am currently heavily invested in studying and learning the subject as I commit myself to reducing my winter energy costs this year. air flow is inadequate to match demand and duct size. Sign up for our email newsletter to learn helpful HVAC tips and tricks before your purchase your system. When you purchase through links on our site, we may earn commissions at no cost to you. I thought of a way to prevent the nasty smell been coming through the vents, keep the cockroaches and rats out, and heat the house without having to go down and repair the ductwork, all at the same time: seal up the foundation vents with insulation and replace the thermostat with a remote bulb thermostat locating the sensor under the house. 4TEE3C10A1 That is excessivly loud. Press Apply to save and exit. I have another question about my new Trane XV95 Furnace. 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 How to change the fan motor speed on a gas furnace grayfurnaceman 148K subscribers Subscribe 190K views 10 years ago Furnace blowers A description of how to change motor speeds with a. In fact, there's no need to worry about the fan wearing out or breaking down because it's designed to run continuously, and there's an array of benefits connected to this. During "Fan On", the fan runs at 50% of whatever the maximum speed of the fan is. In this HVAC training article, we will be discussing how to adjust the fan speeds on an indoor ECM variable speed blower motor and an ECM constant torque/multi-speed blower motor. Dealers can answer questions, help you find the right products for your home, and repair your system. There are also red and brown furnace speed wires. Black: High; Yellow: Medium-high ; Blue or brown: Medium-low; Red: Low; and our Electric Furnace Sequencer Replacement Instructions for Home Repair Blower fan will not run: A failing sequencer may have a burnt contact and is unable to switch the fan and heating coils ON. H.R. Presently the settings for the cooling mode is speed 7 (C1.7), heating mode at speed 5 (H1.5), and continuous fan mode is set at the lowest speed (CF.1). 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. Check out our free Quizzes to test your knowledge here! Yes you can change it, how to do it is in the manual, yes there can be downsides, no it probably won't fix your air balancing issues. Trane s9v2 should thermostat control blower speed? Usually there will be three "speeds" ranging from 40 to 100% of airflow. If the terminals are present at the motor module (ECM X-13) you can switch speeds at the blower motor location. Wires from the 16 pin plug are connected to this board. We welcome your comments and suggestions. The manometer tells you the CFM number. If you have a plug instead (ECM Broad Ocean) you can only make the adjustment at the control board or at the plug terminals at the end of the wiring. Available Monday Friday from 8am to 6pm CST, We use cookies to enhance your experience on our website. Run a jumper from "R" to "Y2" and the blower will run continuously at the second-stage cooling speed. New XV80 Trane furnace makes noise when blower runs at low speed. To begin, turn off the power to your furnace. Solution: Install a new sequencer AND a new fan relay, just to be safe. Remove the air handler. R and BK are tied together. The best answers are voted up and rise to the top, Not the answer you're looking for? The ignitor glows. No problem with the boiler. 01 - Trane Furnace Control Board. The heat exchanger warms up the incoming air and a blower or air handler sends the warm air throughout the home. Variable Speed Blower Motor ( Genteq 2.3, 16 pin connector). The gas is shut off and the induction motor stops running while the blower . 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. After understanding what speed each tap is programmed for, we can make proper airflow adjustments. I connected a second thermostat to the circuit board to run the blower (R to G). bean. The hot air will rise and heat the floor from beneath, a DIY form of radiant floor heating. The variable speed furnace delivers the proper amount of airflow based on the heating and cooling needs of your home. 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. Craig creates educational HVACR articles and videos which are posted at https://www.acservicetech.com & https://www.youtube.com/acservicetechchannel & https://www.facebook.com/acservicetech/. Move the high-speed wire to low. I know that it has been done. Recently I did a blower speed adjustment on the 2nd floor air handler and thought to show how it can be done. Mine. Identify the blower fan and the speed wires. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. Only 3 of the 5 colored wires may be used at a time. First, make sure that power is getting to the motor. 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. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. On this board, pins 3, 4, and 5 on the SW1/1 through SW1/8 dip switch block have to do with air flow. At night with an . This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". He owned and operated a manufacturing business building Compact Utility Vehicles for homeowner use. (Variable & Multi-Speed Types) In this HVAC training article, we will be discussing how to adjust the fan speeds on an indoor ECM variable speed blower motor and an ECM constant torque/multi-speed blower motor. Usually there will be three speeds ranging from 40 to 100% of airflow. (Without enclosing my house in a climate-controlled bubble). Test the new speed. 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. Another key difference is that the circulate . After a bit of research, (translated: "mad google skills") I found an article claiming that lowering the blower speed may increase efficiency. However, they are limited based on the total external static pressure (TESP) in the duct. This will help prevent injury and. http://www.inspectorsjournal.com/Forum/topic.asp?TOPIC_ID=8998&, We've added a "Necessary cookies only" option to the cookie consent popup. Our Privacy Policy governs the use of your information. Measured the temperature of the air before the coil and after the coil and used DeltaT (change in temperature) to determine the blower setting. The installation guide clearly describes how to set airflow for heating mode and cooling mode. This furnace features the common White-Rodgers Intell-Ignition circuit board. Luci is a contributing writer for DoItYourself.com. 3 of the wires will likely terminate with just a twist on cap. 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. View our Privacy Policy here. For example, on a package unit, only taps 3, 4 and 5 may be programmed. If you have not read that yet, I would encourage you to do so! thanks in advance. The MERV scale rates filters from 1 to 16. I know I need to replace a dying blower motor in a 1992 Trane . But I'm reasonably sure it uses less to run on high vs low then it uses to run on low vs OFF. Especially with a high efficiency furnace, however, it may be that the decreased electric bill saves enough to offset the "loss up the flue" not sure. You should now see a red E icon in the System Mode screen next to Auto and Heating modes. This will allow you to access the control board. It allows three constant fan speeds as well as an automatic fan speed and a variable burn rate and compressor and fan speed. You need to find the wires that determine blower speed inside your furnace. Western VA. Nov 28, 2009. Most of these are on the bottom left of the control board. A 90 percent-plus furnace needs 150 cfm per 10,000 Btu of input. 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.. Check out www.acservicetech.com/store. To clean a reusable filter, remove the filter from the air cleaning device. DoItYourself.com, founded in 1995, is the leading independent home improvement and repair website. In the manual, it lists some settings, e.g. Questions of a Do It Yourself nature should be Remove battery from the thermostat (or disconnect thermostat altogether). The only alternative is to raise the discharge temperature. Only swap these two wires. 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. The automatic feature rarely kicks in once at set point. Upon initial installation, these dip switches need to be adjusted for the particular unit, size, and application. -The "AUX Heat" makes sure that there is enough airflow when elect strip heat is called. These blower motor versions can be found in furnaces, air handlers, and packaged units. 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. The blower/fan seems to be running way to fast. Oil Furnaces may have a temp rise of 50-60F. submitted to our "DoItYourself.com Community Forums". The heat exchanger can be overheated and burned out if the blower does not remove enough heat. The blower is set for 400 cfm for a 4 ton outdoor unit, and comfort-R is not enabled (all factory). There are several tutorials on Youtube about how to do this step for specific inducer motor brands. . Stage 3 Aux Heating. Fortunately, theres a simple fix if you look at your furnaces Integrated Furnace Control (IFC) board. This helps the XR80 conserve more of the heat it produces. I found one glued to the back of my furnace door, one in the manual, and maybe one on-line too. ago. If there isnt one in your home, turn it off at the breaker box.