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

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. You have to switch the wires to the blower motor. What sort of strategies would a medieval military use against a fantasy giant? Know your limits. The gas is shut off and the induction motor stops running while the blower . Select your preferred wire with the warm temperature and connect it to the 'heat' port. You can change the settings for cfm fan speed, but you have to do it manually at the board. I'm not in enhanced mode. Can you increase the speed of an ECM AC blower? STEP-BY-STEP REPLACEMENT GUIDE Turn off air conditioning / heat from the thermostat. After a bit of research, (translated: "mad google skills") I found an article claiming that lowering the blower speed may increase efficiency. Other than removing the module and seeing burnt components it must be diagnosed by a professional with a techmate tool ( allows you to test the motor and module and determine cause of error). 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. For more information, please see our If you have not read that yet, I would encourage you to do so! air flow is inadequate to match demand and duct size. In Dungeon World, is the Bard's Arcane Art subject to the same failure outcomes as other spells? ASE Certified Master Auto Technician In other units, it may be 2, 3, and 4 that are programmed. The company offers a variety of furnaces to suits the needs of every home. Stage 2 Aux Heating. Now, I haven't done the measurement to learn how much electricity my blower uses on low vs high. Website operating Thanks for contributing an answer to Home Improvement Stack Exchange! PSC - The Permanent Split Capacitor Motor is still the most commonly used. I know I need to replace a dying blower motor in a 1992 Trane XL80 gas furnace. Divide the rated Btu input by 10,000. We also have quick reference cards for use out in the field! 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. The air handler houses the fan and fan motor and is usually located in the basement or attic. Why is there a voltage on my HDMI and coaxial cables? The manual document include instructions and informations on how to troubleshoot the system. Also, if you are looking for a video to better help understand this topic, check out our "Adjusting HVAC Blower Speed CFM on Furnace & AC Units!" Changing your HVAC and furnace air filter is a vital part of home maintenance. It is about 1300-1400 sq feet, but then the basement was finished at some point, more or less doubling the square footage. 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. (Without enclosing my house in a climate-controlled bubble). If you know what you are doing, it is very simple to adjust the speed of your furnace fan. The ohm meter should read very close to zero. On this control board, there are multiple adjustments for the airflow speeds. Most homes are best served by a filter with a MERV rating of 8 to 13, but refer to your system's user manual or with a Trane employee for guidance. The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. One thing I found consistently was that making changes on the RS-485 hydro heat control board and W1-W3 jumpering had notable effects (more CFM's at my test register) while messing with the mainboard DIP switches had little to no effect. Making statements based on opinion; back them up with references or personal experience. There are often five wire colors coming from your blower to your IFC. Warmup.com mentions that it was the original design of radiant floor heat systems by the Romans. R and BK are tied together. 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. Iappreciate all the comments, questions, and responses that Ireceive from each of you. These blower motor versions can be found in furnaces, air handlers, and packaged units. This BTU/HR capacity should be used to set the CFM for the indoor blower motor. If you have any questions or need assistance, please contact Trane Home Customer Support via email at [email protected] or call 1-877-288-7707, Monday-Friday 9 . 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. It helps to have over 50 years of farming and ranching experience. Note also that there is always just "one blower" but that blower may or may not be variable speed, etc. Options are, for example, 4 minutes at 80%, or 30 seconds at 50%. 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.. Oil Furnaces may have a temp rise of 50-60F. The SW2 indicates the air conditioning size. 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. Most residential furnaces were installed by the low bidder. 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. Id check that out first. Cockroaches and waterbugs coming in through the vents was my big clue there. Test your knowledge with our 1,000 question workbook along with the answer key! 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. It offers three settings: 525 RPM for saving energy, 900 RPM for heating, or 1100 RPM for air conditioning. I just had a Trane system installed last week and I've been very happy with it! Each is associated with a different blower speed. enjoys making jams and jellies during fruit season along with cooking meals. If the pressure switch is functioning properly . For 240v units, both the L and N are hots. Asking for help, clarification, or responding to other answers. Its not advisable to slow your furnace blower speed. Design Engineer/Project Manager for injection molded plastic company 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. 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. 3.5 x 400 = 1400 CFM. 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. Usually, gas furnaces have a temp rise of 50F. 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. in this thread in this sub-forum in the entire site. 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. 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. He is committed to outdoor cooking in a Bar-B-Q pit he welded together several years ago. The constant torque/multispeed motor will have the smallest module. Yes--the efficiency of the heat exchanger will decrease. Thanks for all your continued support! 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. I was reading the Trane XL824 thermostat installation and setup manual. Copyright 1995-document.write(new Date().getFullYear()) MH Sub I, LLC dba Internet Brands. When he's not enjoying family time with his wife and three boys, he loves tinkering with projects and geeking out on electronics. problems contact [email protected]. Third-stage auxiliary heating for heat pumps and multi-stage furnaces. Cookie Notice The wire's color will determine the speed settings that the motor will run at. You will also see the red E icon under Emergency . Click System Options. Certified Welder Top 10 Spots! He built every permanent building on his current homestead and did all the plumbing and electrical work. Questions of a Do It Yourself nature should be submitted to our "DoItYourself.com Community Forums". Usually there will be three speeds ranging from 40 to 100% of airflow. Cross country truck driver -- over dimensional freight By clicking '. The constant air turn over at a lower set point keeps the house comfortable. - Answered by a verified HVAC Technician . Adjusting the Airflow Speed on ECM Blower Fan Motors! . ECM Multi-Speed Blower Motor (Genteq X-13). The furnace operates for two minutes or so before it shuts down. -The "System Type" is the CFM per ton to be adjusted between low, normal and high. Top Ten Interview Tips to Land that HVAC/R Job! Click On under Emergency Heat. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. So the blower motor is dead. But I'm reasonably sure it uses less to run on high vs low then it uses to run on low vs OFF. Only swap these two wires. I.e., maybe more heat is now escaping through the exhaust. Slowing the blower speed reduced the noise but I take it you would still like it to be more silent. If you do, you may not have enough air flow over the heat exchanger, resulting in overheating and eventually a shorter exchanger life span. Based on some randomly googled comments here: http://www.inspectorsjournal.com/Forum/topic.asp?TOPIC_ID=8998& seems to agree it decreases efficiency but may increase comfort [ex: cold spots or noise level] :). I suppose I probably won't do so it, but out of curiosity what kind of downside might one run into? 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. Its time to clear the air. I think I had it on my hard drive, and the hard drive crashed on us last winter. On my furnace the schematic showed there were three speed settings. Only 3 of the 5 colored wires may be used at a time. This furnace features the common White-Rodgers Intell-Ignition circuit board. A dirty air filter can cause your HVAC system to go into overdrive and result in costly energy bills. Remove the air handler. The product data guide, and label on the inside panel indicate the air . 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. He maintains fruit and nut trees along with helping his wife with a vegetable garden. 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. During "Fan On", the fan runs at 50% of whatever the maximum speed of the fan is. 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. Each is associated with a different blower speed. Then switch the jumper to your desired speed. 4TEE3C10A1 That is excessivly loud. Air filters are typically found behind the return vent door, often located in the ceiling or wall in the central portion of your home. (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. Heat exchange takes time. We have a Trane XL80 furnace manual in pdf version that you can download for free. I connected a second thermostat to the circuit board to run the blower (R to G). If you have suggestions or comments they are welcome. Most require that you open a box (2 screws?) 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. Your AC or furnace is designed for a specific type of filter. After understanding what speed each tap is programmed for, we can make proper airflow adjustments. If you want to solve the air noise problem, move the return air filters out of their hallway locations back to the upstream side of the return air duct at the furnace. Follow us on Facebook for Quick Tips and Updates here! This will help prevent injury and damage to the furnace fan. I'd like to get some second opinions. In this case, to adjust the blower speeds, move the dip switches (in the red section of the control board) to the positions shown in the manufacturer's installation instructions. All rights reserved. I hope this helps you understand how to adjust the airflow speed on ECM Blower Motors! I have been reading that the br wire can be used to let the thermostat control the fan speed, or the furnace itself can be programmed to ramp up the fan speed. Blower on delay settings, which evidently have an impact on the duration and speed of the blower fan. She has experience researching and creating a wide range of home improvement and garden projects, and especially enjoys learning about fireplaces and exterior design. Another key difference is that the circulate . If you really wanted to be scientific, you could perform an experiment and post the results here. These connected to (park) terminals, which are not used and simply hold those two additional wire speeds. My heat is running cold! It was working a week ago but just recently when it runs it blows out cold air. 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. A properly fitted filter can also trap unwanted, and oftentimes unseen, pollutants from the air in your home, including: Start with the return vent. Western VA. Nov 28, 2009. A MERV 16 filters particles at a level near that or a HEPA. 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. Which thermostat wires control the furnace fan? DoItYourself.com, founded in 1995, is the leading independent But, in looking up the manual for this furnace (TUD1B100A9361), it looks like there are 4 blower speeds. 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. A MERV rating speaks to the filters ability to capture large particles. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. This will show what speed each numbered tap is programmed as. Black: High; Yellow: Medium-high ; Blue or brown: Medium-low; Red: Low; In terms of heat pumps, running the external blower faster may reduce i2r copper losses and hysteresis iron eddy current losses. They have a built in or attached capacitor that will allow the motor to turn on, turn off and run at a constant speed when running. My gas furnace has two options for the blower speed: MED, and MED-HI. Thoroughly rinse the filter. 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. Craig is a licensed Teacher of HVACR, Sheet Metal, and Building Maintenance in the State of New Jersey of the USA. The gas kicks on and is lit by the ignitor. But the 'real' one will be the one connected with a twist on cap to the fan motor. First, make sure that power is getting to the motor. Can airtags be tracked from an iMac desktop, with no iPhone? You can verify the actual CFM by measuring the TESP of the system and comparing it to the manufacturer's airflow data sheet. Remove both of these wires and wire nut them together. These blower motor speeds are programmed at the manufacturer's factory for the specific equipment model number unit it is installed in. Privacy Policy. I assume you are speaking about dip switch settings. 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). H.R. Dave. bean. Since I first posted this thread, my installer called Trane to get an answer to my original question. Variable Speed units continuously communicate with each other and your Trane thermostat to provide optimal efficiency. I would think adjusting the heating element would save more energy than reducing the blower's electric consumption, but I didn't do a study on it myself. Remove two screws from each bracket leg holding the motor. For business related inquires email us at [email protected]. But you will have a tough time measuring either on your basement Trane. The blower/fan seems to be running way to fast. Soak the filter in warm water in a bathtub or sink. View our Privacy Policy here. I simply am unable to put my hands on the schematic. If the blower motor hums, check the blower fan to ensure that it spins freely. 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. - The "Continuous Fan" refers to when the G terminal is powered for the fan only to run. 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). 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. I understand that the higher speed is probably for cooling (for which we have a separate duct system and handler), but is it the case that the speed can be switched to a higher fan speed? I understand the reason for slowing the air to remove humidity. Sometimes less cmf will give the air more time in the heat exchanger thus letting it get hotter. Step 2: Remove the panel cover of the furnace. Then, carefully switch it to the setting of your choice and push it back into the control board. 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 video will also explain other safety measures, as well as some for a demonstration which I will show. Press Apply to save and exit. *NOTE* If you attempt this, be absolutely sure that you have no power going to your system, especially before changing wires. See our Privacy Policy for more information. Mutually exclusive execution using std::atomic? Switch the power back on and test it. with a wiring harness for the fan. It provides quieter and more even and comfortable heat than a conventional furnace and doesnt consume electricity unnecessarily. The installation instructions for this furnace are needed in order to be able to know how to set these dip switches. 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. 80% would be great for me. Disconnect between goals and daily tasksIs it me, or the industry? Most of these are on the bottom left of the control board. The arrow should face the direction the air is flowing. It shouldn't take more than a few minutes a day to record the data anyway. low would be 350 CFMs/ton, medium 400 CFMs/ton, high 450 CFMs/ton. No problem with the boiler. Here's the sequence: Furnace gets call for heat. That will give you the most reliable results for your particular system. 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. The system also accounts for blocked vents and dirty furnace filters, and adjusts fan speed as needed to compensate. I guess you are talking about a 3 speed direct drive motor with 1/2 shaft. 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. I installed a Thermo Control 2000 boiler and first fired it up this Friday. 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. -The "AUX Heat" makes sure that there is enough airflow when elect strip heat is called. Variable Speed Blower Motor (Genteq ECM 3.0, 4 pin connector). Most homes have a standard split-system air conditioning unit with two main fans. Connect the ohm meter to the pressure switch. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. 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. 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. My main questions are. You may freely link For example, on a package unit, only taps 3, 4 and 5 may be programmed. The house has a 3 ton trane xl20i and an xv80 (4 ton max). Step 3: Adjust the Pulley on the Blower Drive Motor You may freely link to this site, and use it for non-commercial use subject to our terms of use. Trane s9v2 should thermostat control blower speed? Identify the blower fan and the speed wires. This value is then multiplied by 150 cfm to obtain the required airflow for the furnace in heating operation. He has been DIY since childhood and is now a septuagenarian. -The BTU/HR size is selectable between 48,000 42,000 36,000 or 30,000 BTU/HR. The higher the MERV rating, the better the filter is at capturing specific pollutants from the air. These are not switched off but are live all the time. 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! That is incorrect. Thanks for the reply. BarnArtist, locate the wiring schematic on your furnace. Our Privacy Policy governs the use of your information. to this site, and use it for non-commercial use subject to our terms of use. Air filters should be changed every 90 days unless otherwise indicated on the packaging or by the manufacturer. In humid climates, 350 CFM per ton can be selected in order to remove more moisture from the air. Switched it to heat (in which case the furnace board is in control of the fan, not the stat) - got fire, no fan. Typical setups include these wire colors with associated blower speeds. 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. Make sure power is off when doing any adjustment. This will allow you to access the control board. 01 - Trane Furnace Control Board. On most control boards there will be a jumper that is marked to show that it controls the speed. The factory may only set two or three of these colors as actual speeds. Batch split images vertically in half, sequentially numbering the output files, Using indicator constraint with two variables. On this motor module, the speed wires are red, orange, blue, yellow, and black. (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! All information is provided "AS IS." Pollen, dust, clothing and carpet fibers, hair spray, mold spores, Pollen, dust, clothing and carpet fibers, hair, mold spores, legionella, pet dander, Pollen, dust, clothing and carpet fibers, hair spray, mold spores, bacteria, pet dander, cooking oil, most tobacco smoke, smog, Air filters are the first defense against the pollutants in your air, but building a complete air filtration system can help support an even higher quality of indoor air. Cut the wire's terminal connector off with wire cutters. The constant air turn over at a lower set point keeps the house comfortable. At night with an . When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. submitted to our "DoItYourself.com Community Forums". There is no humidistat. Home House & Components Systems Heating & Cooling System Air Conditioners. 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. Use tab to navigate through the menu items. This is done so that the maximum amount of heat is gained in the building from the refrigerant. Locate your thermostat on the page and click System Mode. (Heat transfer wasn't one of my favorite classes in college - I focused more on dynamic systems, sorry.). A second filter location for most HVAC systems and furnaces is the air handler portion of the system. The induction motor begins running. 3 of the wires will likely terminate with just a twist on cap. Your new AC unit is not collecting water (yet) because the anticondensation coating hasn't been compromised (yet); and that's a good thing. If the ohm meter comes back with an open line reading, the switch is bad and needs replaced. you will get the better dehumidification with the lower setting. Most of these are on the bottom left of the control board. and as I recall, you have the HW VP IAQ stat. I'm getting a new s9v2. The continuous fan is marked SW3. (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.) Proper returns are rarely a thought. The BTU/HR capacity or tonnage of the air conditioning system should be included within the model number of the outdoor unit. 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. By regularly changing your filter, you can improve your indoor air quality and extend the life of your heating and cooling system. Connect the black wire to the manometer. 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. The noise is there in heat or AC. homininet 8 mo. The control board has relays that regulate the voltage to each component in the furnace. HVAC filters help remove dust, dander, and harmful particles from the air inside your home. To understand how this works, lets look at the wiring on your furnaces blower. Select Climate from the blue menu on the left side of the page. The ignitor glows. . 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. The hot air will rise and heat the floor from beneath, a DIY form of radiant floor heating. 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