The house has a 3 ton trane xl20i and an xv80 (4 ton max). Divide the rated Btu input by 10,000. When the system calls for heat and the inducer fan begins to run, check each pressure switch terminal. If you have not read that yet, I would encourage you to do so! Test your knowledge with our 1,000 question workbook along with the answer key! Bundle Packs are a great way to save and get faster shipping! I understand the reason for slowing the air to remove humidity. -The BTU/HR size is selectable between 48,000 42,000 36,000 or 30,000 BTU/HR. Again, this can usually be found in the upper-left corner. The system might not work properly. Changing your HVAC and furnace air filter is a vital part of home maintenance. There are several tutorials on Youtube about how to do this step for specific inducer motor brands. My first thought was that the unit was oversized, but I figured out how to check the DIP switch settings. If the blower motor is burned out, replace it. By regularly changing your filter, you can improve your indoor air quality and extend the life of your heating and cooling system. Craig is a licensed Teacher of HVACR, Sheet Metal, and Building Maintenance in the State of New Jersey of the USA. How exactly could I test this? But the 'real' one will be the one connected with a twist on cap to the fan motor. I.e., maybe more heat is now escaping through the exhaust. allows the furnace's circulator blower to operate at a slightly lower speed (85% of desired speed) during a combined thermostat call for cooling and dehumidistat call for dehumidification. The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. We are no longer supporting IE (Internet Explorer). When one of the taps is powered with 24v, the motor will turn on and run at the selected speed. Anyone? Yes--the efficiency of the heat exchanger will decrease. Then switch the jumper to your desired speed. Running your furnace fan all the time isn't exactly a bad thing. Here's hoping for some good answers. *NOTE* If you attempt this, be absolutely sure that you have no power going to your system, especially before changing wires. 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. Invention prototypes are another of his many accomplishments. 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. 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. Wires from the 16 pin plug are connected to this board. I have another question about my new Trane XV95 Furnace. 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. Turn off the emergency HVAC shutoff switch Remove top and bottom cover panels on the air handler / furnace unit (fig.5.1). He maintains fruit and nut trees along with helping his wife with a vegetable garden. He built every permanent building on his current homestead and did all the plumbing and electrical work. 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. Thus, my blower can't be using that much electricity on high. -The "Blower-on and Blower-off delay" time period can be selected. Sometimes less cmf will give the air more time in the heat exchanger thus letting it get hotter. Asking for help, clarification, or responding to other answers. How do I check if this furnace switch the blower to second speed. Usually there will be three "speeds" ranging from 40 to 100% of airflow. XB Trane Furnace: Is there a fan speed control on the unit. The air handler houses the fan and fan motor and is usually located in the basement or attic. Select your preferred wire with the warm temperature and connect it to the 'heat' port. Ilook forward to responding to many more! 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. I'm in the process of re-wiring my blower to run on high with the furnace. It shouldn't take more than a few minutes a day to record the data anyway. 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. (Without enclosing my house in a climate-controlled bubble). These are not switched off but are live all the time. Second-stage auxiliary heating for heat pumps and multi-stage furnaces. Remove the motor and mounting bracket. DoItYourself.com, founded in 1995, is the leading independent home improvement and repair website. Once you have located the panel, remove it. To begin, turn off the power to your furnace. Variable Speed Blower Motor ( Genteq 2.3, 16 pin connector). Bus Driver/Substitute Teacher On the motor, only one of the 5 numbered taps has 24v power at a time based on the speed desired at the control board. The system also accounts for blocked vents and dirty furnace filters, and adjusts fan speed as needed to compensate. Turn off power at the main electric panel. See our Privacy Policy for more information. 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. If you do, you may not have enough air flow over the heat exchanger, resulting in overheating and eventually a shorter exchanger life span. Its time to clear the air. 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. Cockroaches and waterbugs coming in through the vents was my big clue there. This is done so that the maximum amount of heat is gained in the building from the refrigerant. rev2023.3.3.43278. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. 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. 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. I'd like to get some second opinions. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Once you cut the power, you can remove the cover of your furnace to get access to the control board. I simply am unable to put my hands on the schematic. 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. DoItYourself.com, founded in 1995, is the leading independent Iappreciate all the comments, questions, and responses that Ireceive from each of you. Stage 3 Aux Heating. (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. 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. Access the control board. A lower fan speed ensures your heat pump will run for longer periods of time which is required for the system to go into what's called a defrost mode ( watch this video on defrost) Running the fan too high can mean your heat pump will not run long enough in order to kick into a defrost cycle. 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). Usually, gas furnaces have a temp rise of 50F. Inventor with two patents (weight training – anti-rollback for manual wheelchair) She has experience researching and creating a wide range of home improvement and garden projects, and especially enjoys learning about fireplaces and exterior design. . 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). The S8X1 blower has 9 speeds. Slowing the blower speed reduced the noise but I take it you would still like it to be more silent. Employment/Education Highlights (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.) One of these wires will be coming from the thermostat and the other will go to the outside unit. Use tab to navigate through the menu items. The control board has relays that regulate the voltage to each component in the furnace. These blower motor versions can be found in furnaces, air handlers, and packaged units. I can unsubscribe and opt-out from future communications at any time. When it is flashing fast there is heat throughout your home. Air filters are typically found behind the return vent door, often located in the ceiling or wall in the central portion of your home. Air Filter - Be sure to check the air filter and replace if necessary. The gas kicks on and is lit by the ignitor. The furnace operates for two minutes or so before it shuts down. The ignitor glows. After a bit of research, (translated: "mad google skills") I found an article claiming that lowering the blower speed may increase efficiency. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. BarnArtist, locate the wiring schematic on your furnace. A continuous green light means the IFC circuit board needs replacing. This helps the XR80 conserve more of the heat it produces. For example, on a package unit, only taps 3, 4 and 5 may be programmed. We recommend our users to update the browser. My main questions are. Follow us on Facebook for Quick Tips and Updates here! On this board, pins 3, 4, and 5 on the SW1/1 through SW1/8 dip switch block have to do with air flow. If you know what you are doing, it is very simple to adjust the speed of your furnace fan. A MERV 16 filters particles at a level near that or a HEPA. I hope this helps you understand how to adjust the airflow speed on ECM Blower Motors! 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. ASE Certified Master Auto Technician Heating, Cooling, Air Conditioning, Ventilation and T-Stat Controls, 3-Speed, 4-Wire Ceiling Fan Switch Wiring. with a wiring harness for the fan. Thanks for contributing an answer to Home Improvement Stack Exchange! Connect with our Customer Care team about your products, warranties, and dealer concerns. 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. Shay Tilander is a senior editor at Family Handyman. We also have quick reference cards for use out in the field! The constant air turn over at a lower set point keeps the house comfortable. Mine has a wall switch. R and BK are tied together. Also related, with for instance a variable speed furnace, since it runs continuously and reduces "cold spots" you might find you can set it at a lower degree setting than the off/on kind. 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. Helm is an accomplished DIY craftsman. 4TEE3C10A1 That is excessivly loud. This X-13 model shown above designates the speeds taps as numbers, not as colors, to denote each speed. Does that have any impact on the efficiency of the unit? 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. 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. We welcome your comments and suggestions. Design Engineer/Project Manager for injection molded plastic company The MERV scale rates filters from 1 to 16. 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. 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. These two losses comprise the magnitude of heat losses. I installed a Thermo Control 2000 boiler and first fired it up this Friday. He is also an HVACR Contracting Business owner of 16 years and holds an NJ HVACR Master License. The video will also explain other safety measures, as well as some for a demonstration which I will show. 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. Recently I did a blower speed adjustment on the 2nd floor air handler and thought to show how it can be done. The fan speed is controlled on the control board for the furnace. Locate the speed wires. The arrow should face the direction the air is flowing. The constant torque/multispeed motor will have the smallest module. This will help prevent injury and. The problem is, the furnace control module doesn't use a separate speed when the unit is running in continuous FAN mode. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? 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. 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. He farmed commercial garden produce for several years. Comfort R should be off if you are using . The wires are several different colors. The A/C will run according to the thermostat settings. The most important factor is temperature differential - the difference between the inside temperature and outside temperature. Copyright Click On under Emergency Heat. Please note that mounting bracket consists of top and bottom brackets joined by 6 metal screws (fig.6.9). Its not advisable to slow your furnace blower speed. Turn off the power source that is connected to the furnace blower. If the ohm meter comes back with an open line reading, the switch is bad and needs replaced. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin?). My gas furnace has two options for the blower speed: MED, and MED-HI. 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. Options are, for example, 4 minutes at 80%, or 30 seconds at 50%. It wasn't the noise that was bothering me, it was the desert-like sensation of swirling dry air. On this motor module, the speed wires are red, orange, blue, yellow, and black. Sign up for our email newsletter to learn helpful HVAC tips and tricks before your purchase your system. Website operating problems contact Webmaster. The noise of forced air is annoying. 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. We have been heating the crawl space in our house for several winters because the ductwork was all torn up from rats. This trick only works on gas furnace systems with a multi-speed blower. I'll edit my answer and include the exact parameters I'd record every day for a thorough study. enjoys making jams and jellies during fruit season along with cooking meals. Which thermostat wires control the furnace fan? I found one glued to the back of my furnace door, one in the manual, and maybe one on-line too. You have to switch the wires to the blower motor. A second filter location for most HVAC systems and furnaces is the air handler portion of the system. It allows three constant fan speeds as well as an automatic fan speed and a variable burn rate and compressor and fan speed. We welcome your comments and Locate the wire for the new speed setting ("medium" or "low"), remove the wire nut from its end and use wire strippers to strip 1/2-inch of insulation from the end of the wire. In order to measure air flow you could use a flow capture hood, a rotating vane anemometer, or a hot wire anemometer. This is NOT a user servicable item. It had been set on the higher speed, but that was too harsh, so I lowered it to the slower speed. H.R. We are no longer supporting IE (Internet Explorer) as we strive to provide site experiences for browsers that support new web standards and security practices. you will get the better dehumidification with the lower setting. Recently I did a blower speed adjustment on the 2nd floor air. In the example above, an ECM 2.3 16 pin variable speed motor is connected to an air handler control board. If you have suggestions or comments they are welcome. However, I like the continually run the fan to even out air temperature in the house. Available from Trane Dealers in select locations. Copyright 1995-document.write(new Date().getFullYear()) MH Sub I, LLC dba Internet Brands. Most residential furnaces were installed by the low bidder. He also builds custom tools for metal working. It offers three settings: 525 RPM for saving energy, 900 RPM for heating, or 1100 RPM for air conditioning. Air Filters remove dust, lint, pet dander, and other pollutants so you can breathe easier knowing your indoor air quality is better with Trane. This lower blower speed enhances I've already had a few HVAC vendors give me some specious arguments about moisture buildup, another even told me he'd "lose his license" if he touched the job. The wires that are used will determine the speed settings that the motor will run at. New XV80 Trane furnace makes noise when blower runs at low speed. You can change the settings for cfm fan speed, but you have to do it manually at the board. 81K views 2 years ago In this video, we are changing the blower speed on a Trane XR 95 furnace so that the forced air furnace circulates more air on heat mode. Switch the power back on and test it. This will allow you to access the control board. 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. I was reading the Trane XL824 thermostat installation and setup manual. We have a Trane XL80 furnace manual in pdf version that you can download for free. Select Climate from the blue menu on the left side of the page. thanks in advance. Yes, there is a way to bring up the speed on the air handler.. Allow the filter to completely dry before returning it to the device. 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. 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. These blower motor speeds are programmed at the manufacturer's factory for the specific equipment model number unit it is installed in. Most of these are on the bottom left of the control board. When the humidity is high for what its set at. By clicking '. #3. It is important to know that you cant go by a normal color code to determine the speeds. 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. So the blower motor is dead. All information is provided "AS IS." Trane is a top rated US company of HVAC systems that offer quality and reliability. American Standard air handler troubleshooting Does a summoned creature play immediately after being summoned by a ready action? Then switch the jumper to your desired speed. The only alternative is to raise the discharge temperature. 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. Adjust the fan speed, and if you're still experiencing problems, contact your local American Standard Customer Care dealer. Its a common occurrence in the heat of the summer or the cold of the winter one room doesnt get as warm or as cool as the others. Check out our free Quizzes to test your knowledge here! Step 4: Take out the inducer motor. There are often five wire colors coming from your blower to your IFC. 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. 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). Dave. 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 Check out www.acservicetech.com/store. In other units, it may be 2, 3, and 4 that are programmed. 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. Thoroughly rinse the filter. This will increase the number. video below! But I'm reasonably sure it uses less to run on high vs low then it uses to run on low vs OFF. 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. That will give you the most reliable results for your particular system. This BTU/HR capacity should be used to set the CFM for the indoor blower motor. Put the air handler back. The hot air will rise and heat the floor from beneath, a DIY form of radiant floor heating. Can you increase the speed of an ECM AC blower? Connect Y2 on thermostat to BK on furnace, and Y2 on the Condensing unit Cut R-BK jumper at Furnace Install R - O jumper at Furnace Connect W2 on thermostat to W2 on furnace (or alternatively, jumper W1 to W2 at furnace and confirm that dip switches are set correctly for Stage Delay if furnace is desired to automatically control heating stages) 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. You will need to find the main cover panel on your fan. Tied from R to BK in air handler. Additionally, they can be identified by the presence of a removable module/bell on the end of the motor. 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. For business related inquires email us at info@acservicetech.com. The company offers a variety of furnaces to suits the needs of every home. This furnace features the common White-Rodgers Intell-Ignition circuit board. Being an bms/controls guy I rarely have enough cfm in large buildings. 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. 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 (. (Heat transfer wasn't one of my favorite classes in college - I focused more on dynamic systems, sorry.). Related: a two stage furnace works by actually shooting less gas out, which might improve its efficiency. 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. Adjusting the Airflow Speed on ECM Blower Fan Motors! problems contact webmaster@doityourself.com. How does a furnace work? 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. He has been DIY since childhood and is now a septuagenarian. These three are connected to the "Cool", "Heat", and "Fan" terminals on the control board. That said the contractor has no real incentive to get it right. If the blower motor hums, check the blower fan to ensure that it spins freely. There are often five wire colors coming from your blower to your IFC. These blower motor versions can be found in furnaces, air handlers, and packaged units. A 1.5 ton AC unit may not be large enough to cool the . There is no mechanism to change this. 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. A MERV rating speaks to the filters ability to capture large particles. This will help prevent injury and damage to the furnace fan. In order for the filter to work properly, the right size is crucial. Why do many companies reject expired SSL certificates as bugs in bug bounties? one room doesnt get as warm or as cool as the others. If the pressure switch is functioning properly .