Remove two screws from each bracket leg holding the motor. There are often five wire colors coming from your blower to your IFC. I have a Trane Variable Speed Air Handler (TWE049E13FB2). Click System Options. In humid climates, 350 CFM per ton can be selected in order to remove more moisture from the air. Roughly 400 CFM is needed for every 1 ton (12,000 BTU/HR) of Heat Removal Capacity in Air Conditioning Systems. 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. I know I need to replace a dying blower motor in a 1992 Trane XL80 gas furnace. We welcome your comments and suggestions. Can airtags be tracked from an iMac desktop, with no iPhone? CFM stands for "cubic feet per minute." to this site, and use it for non-commercial use subject to our terms of use. Can you increase the speed of an ECM AC blower? HVAC filters help remove dust, dander, and harmful particles from the air inside your home. I'd like to get some second opinions. After a bit of research, (translated: "mad google skills") I found an article claiming that lowering the blower speed may increase efficiency. air flow is inadequate to match demand and duct size. But the 'real' one will be the one connected with a twist on cap to the fan motor. We have been heating the crawl space in our house for several winters because the ductwork was all torn up from rats. 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. Which thermostat wires control the furnace fan? He is also an HVACR Contracting Business owner of 16 years and holds an NJ HVACR Master License. Where To Find R-22 & R410A Leaks on AC Units! the module must be a trane furnace model specific programmed and is available separate from the motor. Why is there a voltage on my HDMI and coaxial cables? Copyright Heres What It Means, Why You Should Monitor the Humidity Levels In Your Home. The line voltage and 24v common are connected at the top and are labeled as C, L, G, N. The 24v common is C and the ground wire is G. For a 120v unit, the L is the 120v hot and the N is the 120v neutral. There is no humidistat. Switch the power back on and test it. lower efficiency furnace) it is drafting exhaust up the flue which can't be good. If the ohm meter comes back with an open line reading, the switch is bad and needs replaced. The arrow should face the direction the air is flowing. 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. The arrow should point toward the unit. Since hot air is much lighter . This will help prevent injury and. The same is true when changing the air duct filter. H.R. 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. According to the company, the slower circulation speed reduces energy consumption by 75%. I recently had have a trane xl 90 want to adjust speed of blower fan blower motor has 4 wires white going to neutral black unhooked blue to high speed yellow to I have a Trane Indoor Air Handler Model No. Yes, there is a way to bring up the speed on the air handler.. The control board has relays that regulate the voltage to each component in the furnace. The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. On most control boards there will be a jumper that is marked to show that it controls the speed. The low pitched whine stops when fan is in high speed. homininet 8 mo. My question was whether the efficiency of heat transfer thru the exchanger would be somewhat compromised due to the reduced airflow. Recently I did a blower speed adjustment on the 2nd floor air. ECM Multi-Speed Blower Motor (Broad Ocean Type), For an ECM blower motor with wires exiting the module (shown above), the speed is changed at the control board by moving the colored wire terminals. Step 3: Find the furnace draft inducer. Iappreciate all the comments, questions, and responses that Ireceive from each of you. Most homes have a standard split-system air conditioning unit with two main fans. I connected a second thermostat to the circuit board to run the blower (R to G). But, in looking up the manual for this furnace (TUD1B100A9361), it looks like there are 4 blower speeds. http://www.inspectorsjournal.com/Forum/topic.asp?TOPIC_ID=8998&, We've added a "Necessary cookies only" option to the cookie consent popup. The installation instructions for this furnace are needed in order to be able to know how to set these dip switches. 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. I'm not completely convinced on this, since the claim is made by a company that sells variable speed blowers for retrofitting HVAC systems. How to use Slater Type Orbitals as a basis functions in matrix method correctly? The variable speed furnace delivers the proper amount of airflow based on the heating and cooling needs of your home. I can unsubscribe and opt-out from future communications at any time. The remaining colored wires will be default speeds. Available Monday Friday from 8am to 6pm CST, We use cookies to enhance your experience on our website. -The BTU/HR size is selectable between 48,000 42,000 36,000 or 30,000 BTU/HR. This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". Dealers can answer questions, help you find the right products for your home, and repair your 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. 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. I know I need to replace a dying blower motor in a 1992 Trane . Use tab to navigate through the menu items. I just had a Trane system installed last week and I've been very happy with it! PSC - The Permanent Split Capacitor Motor is still the most commonly used. Step 4: Take out the inducer motor. thanks in advance. According to the manufacturer's documentation, your furnace should have a 3 or 4 speed blower motor. Change the speed. If the terminals are present at the motor module (ECM X-13) you can switch speeds at the blower motor location. STEP-BY-STEP REPLACEMENT GUIDE Turn off air conditioning / heat from the thermostat. The SW2 indicates the air conditioning size. No problem with the boiler. By Pressing submit, I consent that my information be shared with Trane approved affiliates and third party partners, including connecting me with a local Trane dealer to be contacted about products and services. Are there downsides to this. Cut the wire's terminal connector off with wire cutters. in this thread in this sub-forum in the entire site. Employment/Education Highlights 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. 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. A second filter location for most HVAC systems and furnaces is the air handler portion of the system. Privacy Policy. On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. 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. 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. Cookie Notice Bus Driver/Substitute Teacher 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. ASE Certified Master Auto Technician Locate your thermostat on the page and click System Mode. On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. Black: High; Yellow: Medium-high ; Blue or brown: Medium-low; Red: Low; 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. Your R value shouldn't change, and daily average wind speed and precipitation should have a minimal effect on the convection coefficient. After understanding what speed each tap is programmed for, we can make proper airflow adjustments. low would be 350 CFMs/ton, medium 400 CFMs/ton, high 450 CFMs/ton. Inventor with two patents (weight training – anti-rollback for manual wheelchair) 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). It allows three constant fan speeds as well as an automatic fan speed and a variable burn rate and compressor and fan speed. In other units, it may be 2, 3, and 4 that are programmed. Remove the motor and mounting bracket. (new Image()).src = 'https://capi.connatix.com/tr/si?token=2ba02a33-c319-4410-bba7-f8321a13bed3&cid=877050e7-52c9-4c33-a20b-d8301a08f96d'; cnxps.cmd.push(function () { cnxps({ playerId: "2ba02a33-c319-4410-bba7-f8321a13bed3" }).render("00499ba9282e4d1b985fa8af14d29c2b"); }); On my furnace IFC, the black (high speed) wire is connected to the air conditioning (cool) terminal, and yellow (medium-high speed) is connected to the (heat) terminal. Should I upgrade to a pcm br compatible thermostat? 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. Western VA. Nov 28, 2009. Then, carefully switch it to the setting of your choice and push it back into the control board. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. The blower energy draw at a lower speed will be offset by the loss in fan wheel inertia. Bundle Packs are a great way to save and get faster shipping! Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? Click On under Emergency Heat. These adjustments can be made by pulling the single wire connector and moving it to another single tab positioned horizontally in each row. I simply am unable to put my hands on the schematic. By clicking '. Asking for help, clarification, or responding to other answers. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. The gas kicks on and is lit by the ignitor. I want to increase volume flow if possible. Thanks for the reply. There is another way to wire this, but I can not find it back.. These blower motor versions can be found in furnaces, air handlers, and packaged units. Air filters should be changed every 90 days unless otherwise indicated on the packaging or by the manufacturer. Most require that you open a box (2 screws?) Example: Rated Btu Input = 60,000 / 10,000 = 6 x 150 = 900 cfm of required furnace airflow. The wire's color will determine the speed settings that the motor will run at. This BTU/HR capacity should be used to set the CFM for the indoor blower motor. This control board is out of a variable speed furnace with a modulating gas valve that has a variable speed inducer motor. Use dish soap and a soft-bristle brush or sponge to remove stuck-on debris. Related: a two stage furnace works by actually shooting less gas out, which might improve its efficiency. I'll just run the heat pump through the leaky ductwork and heat the crawl space. First, make sure that power is getting to the motor. 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. The manometer tells you the CFM number. This X-13 model shown above designates the speeds taps as numbers, not as colors, to denote each speed. 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. 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. For business related inquires email us at. The system also accounts for blocked vents and dirty furnace filters, and adjusts fan speed as needed to compensate. During the awake hours I Hold the fan speed at either low or medium. You can verify the actual CFM by measuring the TESP of the system and comparing it to the manufacturer's airflow data sheet. Step 3. 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. Usually there will be three speeds ranging from 40 to 100% of airflow. 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. Continue reading to learn how to lower the fan speed. You will need to find the main cover panel on your fan. Select Climate from the blue menu on the left side of the page. This lower blower speed enhances New XV80 Trane furnace makes noise when blower runs at low speed. Your AC or furnace is designed for a specific type of filter. Remove both of these wires and wire nut them together. 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. 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. Can this be adjusted Now that its gotten cold, we've noticed that several of the heat register barely have any air coming out of them. Remove battery from the thermostat (or disconnect thermostat altogether). When one of the taps is powered with 24v, the motor will turn on and run at the selected speed. A continuous green light means the IFC circuit board needs replacing. -The "Blower-on and Blower-off delay" time period can be selected. #3. That is incorrect. Dave. 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 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. All information is provided "AS IS." If the Delta T continues to rise, this is due to low indoor airflow. In terms of heat pumps, running the external blower faster may reduce i2r copper losses and hysteresis iron eddy current losses. However, a higher MERV rating may not be best for your system. The furnace operates for two minutes or so before it shuts down. The product data guide, and label on the inside panel indicate the air . 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. In Dungeon World, is the Bard's Arcane Art subject to the same failure outcomes as other spells? Why is my furnace blower running at low speed? When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. 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. BarnArtist, locate the wiring schematic on your furnace. enjoys making jams and jellies during fruit season along with cooking meals. 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. These connected to (park) terminals, which are not used and simply hold those two additional wire speeds. I'm getting a new s9v2. This will help prevent injury and damage to the furnace fan. This helps the XR80 conserve more of the heat it produces. 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). If you do, you may not have enough air flow over the heat exchanger, resulting in overheating and eventually a shorter exchanger life span. If your home has multiple HVAC systems, there will likely be at least one air filter for each unit. If the blower motor is burned out, replace it. I have a Carrier furnace/heat pump with an expensive control thermostat that talks directly to the heat pump. 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. If the relay that controls the blower motor fails while it is closed, it will send continuous voltage to the blower motor, causing the motor to run continuously. It helps to have over 50 years of farming and ranching experience. Only 3 of the 5 colored wires may be used at a time. 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. To clean a reusable filter, remove the filter from the air cleaning device. Top 10 Spots! During "Fan On", the fan runs at 50% of whatever the maximum speed of the fan is. 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. Usually, gas furnaces have a temp rise of 50F. Here's the sequence: Furnace gets call for heat. Variable speed furnaces only operate at . Connect and share knowledge within a single location that is structured and easy to search. 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. These blower motor speeds are programmed at the manufacturer's factory for the specific equipment model number unit it is installed in. I assume you are speaking about dip switch settings. Warmup.com mentions that it was the original design of radiant floor heat systems by the Romans. These blower motor versions can be found in furnaces, air handlers, and packaged units. Stage 3 Aux Heating. How do I check if this furnace switch the blower to second speed. Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. It only takes a minute to sign up. Narrowing that hysteresis loop will: Leading to a smaller Hysteresis loop, increasing motor efficiency by reducing iron eddy current losses. AC Service Tech HVAC Training is made possible by continued support from our visitors, customers, and support from these Sponsors! If the control board is at fault, replace it. 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. Turn off the emergency HVAC shutoff switch Remove top and bottom cover panels on the air handler / furnace unit (fig.5.1). Batch split images vertically in half, sequentially numbering the output files, Using indicator constraint with two variables. Thanks for all your continued support! 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. The following list refers to each adjustment starting from the bottom and moving upward. The wires that are used will determine the speed settings that the motor will run at. ECM Multi-Speed Blower Motor (Genteq X-13). The heat exchanger warms up the incoming air and a blower or air handler sends the warm air throughout the home. The A/C will run according to the thermostat settings. See our Privacy Policy for more information. It is a Trane S8X1 single stage furnace and air handler, paired with an XR16 3 ton AC unit. So I continued to play around with different combinations tonight. 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. 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.e., maybe more heat is now escaping through the exhaust. @Dave: Those were my thoughts as well. Tools that we use: www.amazon.com/shop/acservicetech. We also have quick reference cards for use out in the field! Move the high-speed wire to low. I'm also going to go through and make sure there are no visible leaks or damage to them. I understand the reason for slowing the air to remove humidity. - Answered by a verified HVAC Technician . (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! If the blower motor hums, check the blower fan to ensure that it spins freely. Only swap these two wires. 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. Connect the black wire to the manometer. Wires from the 16 pin plug are connected to this board. The S8X1 blower has 9 speeds. Being an bms/controls guy I rarely have enough cfm in large buildings. The blower is set for 400 cfm for a 4 ton outdoor unit, and comfort-R is not enabled (all factory). Identify those arcade games from a 1983 Brazilian music video. The remaining colored wires are the speed selectors for this blower motor.). Usually there will be three "speeds" ranging from 40 to 100% of airflow. Proper duct sizing can resolve the issue you are having. Cockroaches and waterbugs coming in through the vents was my big clue there. At night with an . To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. My main questions are. 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. All rights reserved. For homeowners who want to upgrade rather than replace an existing furnace, Emerson Electric offers an exclusive replacement blower motor called the Mark Z that can be set by the homeowner on a continuous, slower-than-normal speed. By regularly changing your filter, you can improve your indoor air quality and extend the life of your heating and cooling system. Allow the filter to completely dry before returning it to the device. He currently has a home shop where he sharpens and rebuilds saws, repairs lawn mowers, mobility scooters, hydraulic jacks, and anything else that comes along. The noise is there in heat or AC. Secure the old speed wire by twisting a wire nut over the end. 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. All information is provided "AS IS." HVAC system for small church has twin Trane XR90 units installed in 2009 to replace a unit with a much larger single blower. 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. Please note that mounting bracket consists of top and bottom brackets joined by 6 metal screws (fig.6.9). This is NOT a user servicable item. Run a jumper from "R" to "Y2" and the blower will run continuously at the second-stage cooling speed. 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. Radiant floor heat web sites are mysteriously silent on this simple and cheap modification of pre-exisiting systems to accomplish the same goal. Air Conditioner + Furnace Matched Systems, Air Conditioner + Air Handler Matched Systems, Does Your Air Conditioner Smell? Well, it does make sense that lowering the blower speed would reduce its electrical consumption. How to Lower the Ouptut of Oversized Furnace. 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. This covers speed adjustment on a PSC motor. When the system calls for heat and the inducer fan begins to run, check each pressure switch terminal. This will allow you to access the control board. If you are having problems, find your fans users manual and use it as a guide. 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. Heat exchange takes time. It would have no affect on the Heat settings. If the pressure switch is functioning properly . If you have suggestions or comments they are welcome. Mine. 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] :). Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Its time to clear the air. Choose the Trane owner guide thats specific to your unit for detailed instructions on locating and changing yourairfilter. The house has a 3 ton trane xl20i and an xv80 (4 ton max). The air handler houses the fan and fan motor and is usually located in the basement or attic. There is a modification that will allow the VS fan to run on high speed at all times while in the AC mode and with the fan "ON" mode. How to tell which packages are held back due to phased updates, Linear Algebra - Linear transformation question. Ilook forward to responding to many more! He has been DIY since childhood and is now a septuagenarian. Air filters are measured by Minimum Efficiency Reporting Values (MERV). He owned and operated a manufacturing business building Compact Utility Vehicles for homeowner use. Check out www.acservicetech.com/store. The wires are several different colors. How exactly could I test this? The airflow adjustments on this board are pictured below. R and BK are tied together. 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. The manual document include instructions and informations on how to troubleshoot the system. Can a furnace with a variable speed blower be used in a multistory house? By pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. Thus, my blower can't be using that much electricity on high. 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.