There are several tutorials on Youtube about how to do this step for specific inducer motor brands. Because the slower air velocity over the heat element is transferring fewer BTU units into the circulated air and they simply go up the exhaust pipe. For instance, here's the procedure to change a furnace's fan speed with a PSC blower motor: Use a multimeter to measure the resistances of each speed wire. Cookie Notice If your home has multiple HVAC systems, there will likely be at least one air filter for each unit. After understanding what speed each tap is programmed for, we can make proper airflow adjustments. If you do, you may not have enough air flow over the heat exchanger, resulting in overheating and eventually a shorter exchanger life span. There are only a few steps required for most units and having the control will allow you to get your unit to give you the service you need. Once you cut the power, you can remove the cover of your furnace to get access to the control board. 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. 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. Where To Find R-22 & R410A Leaks on AC Units! He also builds custom tools for metal working. 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 . Trane. Your OP was a noise complaint. This value is then multiplied by 150 cfm to obtain the required airflow for the furnace in heating operation. The gas kicks on and is lit by the ignitor. This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". (Although it wouldn't hurt to record those too.) Choose the Trane owner guide thats specific to your unit for detailed instructions on locating and changing yourairfilter. The automatic feature rarely kicks in once at set point. I simply am unable to put my hands on the schematic. It is important to know that you cant go by a normal color code to determine the speeds. A dirty air filter can cause your HVAC system to go into overdrive and result in costly energy bills. 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. @Dave: Those were my thoughts as well. CFM stands for "cubic feet per minute." 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. I think the best bet would be to actually test it for a few months and see. Typical setups include these wire colors with associated blower speeds. Soak the filter in warm water in a bathtub or sink. He is also an HVACR Contracting Business owner of 16 years and holds an NJ HVACR Master License. H.R. Cockroaches and waterbugs coming in through the vents was my big clue there. A MERV 16 filters particles at a level near that or a HEPA. Third-stage auxiliary heating for heat pumps and multi-stage furnaces. lower efficiency furnace) it is drafting exhaust up the flue which can't be good. Mutually exclusive execution using std::atomic? Narrowing that hysteresis loop will: Leading to a smaller Hysteresis loop, increasing motor efficiency by reducing iron eddy current losses. The arrow should point toward the unit. http://www.inspectorsjournal.com/Forum/topic.asp?TOPIC_ID=8998&, We've added a "Necessary cookies only" option to the cookie consent popup. 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. Connect the common wire to the neutral terminal of the furnace's control board. you will get the better dehumidification with the lower setting. Disconnect between goals and daily tasksIs it me, or the industry? ago. So I continued to play around with different combinations tonight. 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. 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. We have been heating the crawl space in our house for several winters because the ductwork was all torn up from rats. Only swap these two wires. Step 2: Remove the panel cover of the furnace. The system also accounts for blocked vents and dirty furnace filters, and adjusts fan speed as needed to compensate. On this control board, there are multiple adjustments for the airflow speeds. No need for direct trane replacment 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. Compatible with Trane systems or any standard HVAC system. 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. Iappreciate all the comments, questions, and responses that Ireceive from each of you. I want it for the same reason as cliff--the top floor of my house is colder than the main floor and I'd like to even things out by moving more air around. Copyright 1995-document.write(new Date().getFullYear()) MH Sub I, LLC dba Internet Brands. 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. 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. One of these wires will be coming from the thermostat and the other will go to the outside unit. The blower/fan seems to be running way to fast. The MERV scale rates filters from 1 to 16. Warmup.com mentions that it was the original design of radiant floor heat systems by the Romans. 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. When you purchase through links on our site, we may earn commissions at no cost to you. and as I recall, you have the HW VP IAQ stat. Ilook forward to responding to many more! He is experienced in wood and metal construction, having designed and built several houses and metal buildings. with a wiring harness for the fan. I know I need to replace a dying blower motor in a 1992 Trane . I connected a second thermostat to the circuit board to run the blower (R to G). After a bit of research, (translated: "mad google skills") I found an article claiming that lowering the blower speed may increase efficiency. 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. When the R-G circuit is made, the blower motor operates on heating speed. (Heat transfer wasn't one of my favorite classes in college - I focused more on dynamic systems, sorry.). 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. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin?). View our Privacy Policy here. 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). Trane XR80 Troubleshooting After examining the flashing system you should check the green light speed. On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. This BTU/HR capacity should be used to set the CFM for the indoor blower motor. In the manual, it lists some settings, e.g. Sign up for our email newsletter to learn helpful HVAC tips and tricks before your purchase your system. Slowing the blower speed reduced the noise but I take it you would still like it to be more silent. You should now see a red E icon in the System Mode screen next to Auto and Heating modes. 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. Turn off the power source that is connected to the furnace blower. Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. Usually there will be three "speeds" ranging from 40 to 100% of airflow. If you really wanted to be scientific, you could perform an experiment and post the results here. Tied from R to BK in air handler. Air Filters remove dust, lint, pet dander, and other pollutants so you can breathe easier knowing your indoor air quality is better with Trane. 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 wasn't the noise that was bothering me, it was the desert-like sensation of swirling dry air. This control board is out of a variable speed furnace with a modulating gas valve that has a variable speed inducer motor. By pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. Luci is a contributing writer for DoItYourself.com. R and BK are tied together. 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. On this board, pins 3, 4, and 5 on the SW1/1 through SW1/8 dip switch block have to do with air flow. Divide the rated Btu input by 10,000. Bus Driver/Substitute Teacher I got the sv96 100k btu 2stage furnace with variable fan and the xl18 4ton ac unit. 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! 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. This can be done through an independent dehumidistat or through a thermostat's DEHUM terminal (if available). 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. 4TEE3C10A1 That is excessivly loud. I needed to go the opposite direction and increase fan speed. submitted to our "DoItYourself.com Community Forums". air flow is inadequate to match demand and duct size. That will give you the most reliable results for your particular system. 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. Inventor with two patents (weight training – anti-rollback for manual wheelchair) -The BTU/HR size is selectable between 48,000 42,000 36,000 or 30,000 BTU/HR. Wires from the 16 pin plug are connected to this board. You need to find the wires that determine blower speed inside your furnace. My gas furnace has two options for the blower speed: MED, and MED-HI. Proper returns are rarely a thought. A properly fitted filter can also trap unwanted, and oftentimes unseen, pollutants from the air in your home, including: Start with the return vent. Our Privacy Policy governs the use of your information. For example, on a package unit, only taps 3, 4 and 5 may be programmed. Continue reading to learn how to lower the fan speed. How does a furnace work? Craig is a licensed Teacher of HVACR, Sheet Metal, and Building Maintenance in the State of New Jersey of the USA. 3.5 x 400 = 1400 CFM. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. The factory may only set two or three of these colors as actual speeds. The installation guide clearly describes how to set airflow for heating mode and cooling mode. I'll edit my answer and include the exact parameters I'd record every day for a thorough study. one room doesnt get as warm or as cool as the others. You can change the settings for cfm fan speed, but you have to do it manually at the board. It had been set on the higher speed, but that was too harsh, so I lowered it to the slower speed. In Dungeon World, is the Bard's Arcane Art subject to the same failure outcomes as other spells? It only takes a minute to sign up. So the blower motor is dead. 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). To understand how this works, let's look at the wiring on your furnace's blower. You have to switch the wires to the blower motor. The ohm meter should read very close to zero. I suppose I probably won't do so it, but out of curiosity what kind of downside might one run into? Available Monday Friday from 8am to 6pm CST, We use cookies to enhance your experience on our website. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. Has anyone done this and can anyone give me a reason why I shouldn't do this? The following list refers to each adjustment starting from the bottom and moving upward. 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. How to Lower the Ouptut of Oversized Furnace. The automatic feature rarely kicks in once at set point. The fan speed is very low when not heating/cooling. When the system calls for heat and the inducer fan begins to run, check each pressure switch terminal. This is NOT a user servicable item. 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). 3 of the wires will likely terminate with just a twist on cap. The house has a 3 ton trane xl20i and an xv80 (4 ton max). thanks in advance. According to the company, the slower circulation speed reduces energy consumption by 75%. Blower on delay settings, which evidently have an impact on the duration and speed of the blower fan. The constant torque/multispeed motor will have the smallest module. Air filters should be changed every 90 days unless otherwise indicated on the packaging or by the manufacturer. Radiant floor heat web sites are mysteriously silent on this simple and cheap modification of pre-exisiting systems to accomplish the same goal. It offers three settings: 525 RPM for saving energy, 900 RPM for heating, or 1100 RPM for air conditioning. video below! These adjustments can be made by pulling the single wire connector and moving it to another single tab positioned horizontally in each row. You may freely link The problem is, the furnace control module doesn't use a separate speed when the unit is running in continuous FAN mode. Turn off power at the main electric panel. Variable Speed units continuously communicate with each other and your Trane thermostat to provide optimal efficiency. If you are a homeowner looking to repair your own appliance, understand that the voltages can be lethal, the fuels are highly flammable and high pressures are used. Remove both of these wires and wire nut them together. 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. 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. Slowly flashing shows your furnace is on and does not need heat. Air filters are measured by Minimum Efficiency Reporting Values (MERV). If the control board is at fault, replace it. How to tell which packages are held back due to phased updates, Linear Algebra - Linear transformation question. A MERV rating speaks to the filters ability to capture large particles. The same is true when changing the air duct filter. Step 3: Adjust the Pulley on the Blower Drive Motor The continuous fan is marked SW3. Connect the ohm meter to the pressure switch. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? Well, it does make sense that lowering the blower speed would reduce its electrical consumption. Recently I did a blower speed adjustment on the 2nd floor air handler and thought to show how it can be done. 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. Be sure to check out our previous article on ", If you want to learn about refrigerants and how they work in a system, check out our. What sort of strategies would a medieval military use against a fantasy giant? Website operating Most require that you open a box (2 screws?) Then switch the jumper to your desired speed. Know your limits. Does a summoned creature play immediately after being summoned by a ready action? 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. The boiler is feeding a DHW sidearm and furnace plenum HX. Top Ten Interview Tips to Land that HVAC/R Job! Your R value shouldn't change, and daily average wind speed and precipitation should have a minimal effect on the convection coefficient. Does lowering the blower speed of a forced-air furnace lower its efficiency? Oil Furnaces may have a temp rise of 50-60F. Remove both of these wires and wire nut them together. These connected to (park) terminals, which are not used and simply hold those two additional wire speeds. See our Privacy Policy for more information. In humid climates, 350 CFM per ton can be selected in order to remove more moisture from the air. If the blower motor hums, check the blower fan to ensure that it spins freely. Remove the air handler. However, a higher MERV rating may not be best for your system. 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. I want to do what is best. If the furnace manufacturer supplies different burners for that unit you may be risking premature failure. Switch the power back on and test it. Mine has a wall switch. Step 3. 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. The remaining colored wires will be default speeds. My main questions are. So if you are actually moving 1250 CFM then you are at 357 CFM/ton, which is a good setup for dehumidifying. DoItYourself.com, founded in 1995, is the leading independent home improvement and repair website. You will need to find the main cover panel on your fan. Can this be adjusted Can you increase the speed of an ECM AC blower? Air Filter - Be sure to check the air filter and replace if necessary. Why is there a voltage on my HDMI and coaxial cables? 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. Each is associated with a different blower speed. 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. That said the contractor has no real incentive to get it right. 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. I hope this helps you understand how to adjust the airflow speed on ECM Blower Motors! 10 Reasons a Blower Fan Won't Start in a Furnace, AC or Heat Pump. Step 4: Take out the inducer motor. (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! 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. How to use Slater Type Orbitals as a basis functions in matrix method correctly? To clean a reusable filter, remove the filter from the air cleaning device. Adjusting the Airflow Speed on ECM Blower Fan Motors! He maintains fruit and nut trees along with helping his wife with a vegetable garden. Select your preferred wire with the warm temperature and connect it to the 'heat' port. He built every permanent building on his current homestead and did all the plumbing and electrical work. American Standard air handler troubleshooting Id check that out first. 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. I guess you are talking about a 3 speed direct drive motor with 1/2 shaft. The product data guide, and label on the inside panel indicate the air . 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. Are there downsides to this. Step 3: Find the furnace draft inducer. This will show what speed each numbered tap is programmed as. How exactly could I test this? 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. Thanks for contributing an answer to Home Improvement Stack Exchange! I just moved into a house with a Trane XR80 furnace (several years old). On this motor module, the speed wires are red, orange, blue, yellow, and black. 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). This is done so that the maximum amount of heat is gained in the building from the refrigerant. 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. One fan is inside the house, and one is outside the home. These three are connected to the "Cool", "Heat", and "Fan" terminals on the control board. 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. 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. The house cools off quick - too quick - and feels humid (not sure of the rh%). I understand the reason for slowing the air to remove humidity. The system might not work properly. The air handler houses the fan and fan motor and is usually located in the basement or attic. You may freely link to this site, and use it for non-commercial use subject to our terms of use. 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. Turn off the emergency HVAC shutoff switch Remove top and bottom cover panels on the air handler / furnace unit (fig.5.1). But you will have a tough time measuring either on your basement Trane. There is no mechanism to change this. Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace? 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. In order for the filter to work properly, the right size is crucial. I think I had it on my hard drive, and the hard drive crashed on us last winter. The hot air will rise and heat the floor from beneath, a DIY form of radiant floor heating. Click On under Emergency Heat. 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. On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. Example: Rated Btu Input = 60,000 / 10,000 = 6 x 150 = 900 cfm of required furnace airflow. We have a Trane XL80 furnace manual in pdf version that you can download for free. 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. Additionally, they can be identified by the presence of a removable module/bell on the end of the motor. My heat is running cold! All rights reserved. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Bundle Packs are a great way to save and get faster shipping! Adjust the fan speed, and if you're still experiencing problems, contact your local American Standard Customer Care dealer. During the awake hours I Hold the fan speed at either low or medium. According to the manufacturer's documentation, your furnace should have a 3 or 4 speed blower motor. Heat exchange takes time. We also have quick reference cards for use out in the field! -The "AC/HP CFM Adjust" is the airflow volume to be set for system, efficiency, comfort. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Asking for help, clarification, or responding to other answers. Any takers? Then switch the jumper to your desired speed. Heating, Cooling, Air Conditioning, Ventilation and T-Stat Controls, 3-Speed, 4-Wire Ceiling Fan Switch Wiring. The control board has relays that regulate the voltage to each component in the furnace. Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? There are two types of fan motors found in furnaces: 1.) Western VA. Nov 28, 2009. 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. She has experience researching and creating a wide range of home improvement and garden projects, and especially enjoys learning about fireplaces and exterior design. Anyone? Switched it to heat (in which case the furnace board is in control of the fan, not the stat) - got fire, no fan. Note also that there is always just "one blower" but that blower may or may not be variable speed, etc. Using a hammer, lightly tap out the blower motor shaft (fig.6.7) to loosen the blower motor from the fan shroud (fig.6.8). Press Apply to save and exit. We are no longer supporting IE (Internet Explorer). It allows three constant fan speeds as well as an automatic fan speed and a variable burn rate and compressor and fan speed. Use dish soap and a soft-bristle brush or sponge to remove stuck-on debris. Check out our free Quizzes to test your knowledge here! Fortunately, theres a simple fix if you look at your furnaces Integrated Furnace Control (IFC) board. It shouldn't take more than a few minutes a day to record the data anyway. In order to measure air flow you could use a flow capture hood, a rotating vane anemometer, or a hot wire anemometer. Shay Tilander is a senior editor at Family Handyman. The blower fan on this blower has four speeds. To begin, turn off the power to your furnace. Remember that CFM stands for Cubic Feet Per Minute. If you know what you are doing, it is very simple to adjust the speed of your furnace fan.