It is about 1300-1400 sq feet, but then the basement was finished at some point, more or less doubling the square footage. Wires from the 16 pin plug are connected to this board. Remove two screws from each bracket leg holding the motor. The remaining colored wires are the speed selectors for this blower motor.). But you will have a tough time measuring either on your basement Trane. PSC - The Permanent Split Capacitor Motor is still the most commonly used. There are two types of fan motors found in furnaces: 1.) On this board, pins 3, 4, and 5 on the SW1/1 through SW1/8 dip switch block have to do with air flow. 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. Asking for help, clarification, or responding to other answers. Identify the blower fan and the speed wires. The wires that are used will determine the speed settings that the motor will run at. 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. 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 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. Cut the wire's terminal connector off with wire cutters. We are no longer supporting IE (Internet Explorer). 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.. If there isnt one in your home, turn it off at the breaker box. Slowing the blower speed reduced the noise but I take it you would still like it to be more silent. Select Climate from the blue menu on the left side of the page. 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. Comfort R should be off if you are using . 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. Most require that you open a box (2 screws?) Roughly 400 CFM is needed for every 1 ton (12,000 BTU/HR) of Heat Removal Capacity in Air Conditioning Systems. Check back regularly as we are always updating and improving thiswebsite! The same is true when changing the air duct filter. 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. After a bit of research, (translated: "mad google skills") I found an article claiming that lowering the blower speed may increase efficiency. enjoys making jams and jellies during fruit season along with cooking meals. Now that would turn the blower speed down on you. 3 of the wires will likely terminate with just a twist on cap. The induction motor begins running. The heat exchanger warms up the incoming air and a blower or air handler sends the warm air throughout the home. Changing your HVAC and furnace air filter is a vital part of home maintenance. 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. Thoroughly rinse the filter. STEP-BY-STEP REPLACEMENT GUIDE Turn off air conditioning / heat from the thermostat. According to the company, the slower circulation speed reduces energy consumption by 75%. Remove the motor and mounting bracket. How to Lower the Ouptut of Oversized Furnace. This will help prevent injury and damage to the furnace fan. suggestions. My main questions are. These blower motor versions can be found in furnaces, air handlers, and packaged units. These three are connected to the "Cool", "Heat", and "Fan" terminals on the control board. Employment/Education Highlights American Standard air handler troubleshooting A MERV rating speaks to the filters ability to capture large particles. When you purchase through links on our site, we may earn commissions at no cost to you. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin?). Allow the filter to completely dry before returning it to the device. Tools that we use: www.amazon.com/shop/acservicetech. Here are how my dip switches are set: Did the installer tie in a humidistat there on that V/S blower . The fan speed is controlled on the control board for the furnace. Access the control board. Does lowering the blower speed of a forced-air furnace lower its efficiency? You may freely link to this site, and use it for non-commercial use subject to our terms of use. Turn off power at the main electric panel. Therefore I again adjusted the speed upward a bit and that seemingly has corrected the problem. We welcome your comments and Your OP was a noise complaint. By pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. However, a higher MERV rating may not be best for your system. Recently I did a blower speed adjustment on the 2nd floor air. The company offers a variety of furnaces to suits the needs of every home. I have another question about my new Trane XV95 Furnace. I have posted an inquiry under the Air Conditioning forum. 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. Blower on delay settings, which evidently have an impact on the duration and speed of the blower fan. No problem with the boiler. -The "AC/HP CFM Adjust" is the airflow volume to be set for system, efficiency, comfort. . H.R. It provides quieter and more even and comfortable heat than a conventional furnace and doesnt consume electricity unnecessarily. If you need assistance determining the best filter for your unit, a Trane employee would be happy to assist you. Top 10 Spots! The noise of forced air is annoying. The constant air turn over at a lower set point keeps the house comfortable. Usually there will be three speeds ranging from 40 to 100% of airflow. The blower is set for 400 cfm for a 4 ton outdoor unit, and comfort-R is not enabled (all factory). The most important factor is temperature differential - the difference between the inside temperature and outside temperature. 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. Match the positions to the desired pictures within the manufacturer's installation literature. 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). 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. 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) 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. I'm getting a new s9v2. Once you have located the panel, remove it. In order to measure air flow you could use a flow capture hood, a rotating vane anemometer, or a hot wire anemometer. If you are having problems, find your fans users manual and use it as a guide. Does a summoned creature play immediately after being summoned by a ready action? 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. Ilook forward to responding to many more! This lower blower speed enhances Example: Rated Btu Input = 60,000 / 10,000 = 6 x 150 = 900 cfm of required furnace airflow. To learn more, see our tips on writing great answers. Black: High; Yellow: Medium-high ; Blue or brown: Medium-low; Red: Low; Locate your thermostat on the page and click System Mode. 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. These blower motor speeds are programmed at the manufacturer's factory for the specific equipment model number unit it is installed in. Here's hoping for some good answers. Most of these are on the bottom left of the control board. (Without enclosing my house in a climate-controlled bubble). Adjust the fan speed, and if you're still experiencing problems, contact your local American Standard Customer Care dealer. Use dish soap and a soft-bristle brush or sponge to remove stuck-on debris. 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. I know I need to replace a dying blower motor in a 1992 Trane XL80 gas furnace. I'll edit my answer and include the exact parameters I'd record every day for a thorough study. But, in looking up the manual for this furnace (TUD1B100A9361), it looks like there are 4 blower speeds. Our Privacy Policy governs the use of your information. Air Filter - Be sure to check the air filter and replace if necessary. Trane. Does that have any impact on the efficiency of the unit? Locate the speed wires. Fortunately, theres a simple fix if you look at your furnaces Integrated Furnace Control (IFC) board. The blower energy draw at a lower speed will be offset by the loss in fan wheel inertia. If you have not read that yet, I would encourage you to do so! to this site, and use it for non-commercial use subject to our terms of use. On this motor module, the speed wires are red, orange, blue, yellow, and black. Secure the old speed wire by twisting a wire nut over the end. Test the new speed. 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. Dealers can answer questions, help you find the right products for your home, and repair your system. Shay Tilander is a senior editor at Family Handyman. 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 . 3.5 x 400 = 1400 CFM. Trane s9v2 should thermostat control blower speed? Then, carefully switch it to the setting of your choice and push it back into the control board. The factory may only set two or three of these colors as actual speeds. The furnace operates for two minutes or so before it shuts down. We have been heating the crawl space in our house for several winters because the ductwork was all torn up from rats. Can you increase the speed of an ECM AC blower? 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. Your R value shouldn't change, and daily average wind speed and precipitation should have a minimal effect on the convection coefficient. This furnace features the common White-Rodgers Intell-Ignition circuit board. These are not switched off but are live all the time. This means that any time cooling is called for by the control board, 24v will be present on the #4 terminal of the motor module to turn the motor on and to run at roughly 1200 CFM. If the blower motor hums, check the blower fan to ensure that it spins freely. View our Privacy Policy here. Cross country truck driver -- over dimensional freight The arrow should face the direction the air is flowing. For example, on a package unit, only taps 3, 4 and 5 may be programmed. Should I upgrade to a pcm br compatible thermostat? 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. How do I check if this furnace switch the blower to second speed. Thanks for contributing an answer to Home Improvement Stack Exchange! The only alternative is to raise the discharge temperature. 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. 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). Why do many companies reject expired SSL certificates as bugs in bug bounties? It wasn't the noise that was bothering me, it was the desert-like sensation of swirling dry air. 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. See our Privacy Policy for more information. By clicking '. He farmed commercial garden produce for several years. Available from Trane Dealers in select locations. 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! On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. If you do, you may not have enough air flow over the heat exchanger, resulting in overheating and eventually a shorter exchanger life span. Step 2: Remove the panel cover of the furnace. This is done so that the maximum amount of heat is gained in the building from the refrigerant. Trane is a top rated US company of HVAC systems that offer quality and reliability. When the R-G circuit is made, the blower motor operates on heating speed. Since hot air is much lighter . Id check that out first. Identify those arcade games from a 1983 Brazilian music video. 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] :). The arrow should face the direction the air is flowing. Narrowing that hysteresis loop will: Leading to a smaller Hysteresis loop, increasing motor efficiency by reducing iron eddy current losses. It was working a week ago but just recently when it runs it blows out cold air. 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. 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. 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. Its not advisable to slow your furnace blower speed. Sometimes you have to add more ducts to achieve the proper pressure and velocity. I want to do what is best. It helps to have over 50 years of farming and ranching experience. (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 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. It shouldn't take more than a few minutes a day to record the data anyway. 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. The blower fan on this blower has four speeds. one room doesnt get as warm or as cool as the others. The problem is, the furnace control module doesn't use a separate speed when the unit is running in continuous FAN mode. Are there downsides to this. ASE Certified Master Auto Technician 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. 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. Western VA. Nov 28, 2009. 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). home improvement and repair website. All rights reserved. This X-13 model shown above designates the speeds taps as numbers, not as colors, to denote each speed. Questions of a Do It Yourself nature should be 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. Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. This will help prevent injury and. AC Service Tech HVAC Training is made possible by continued support from our visitors, customers, and support from these Sponsors! There is another way to wire this, but I can not find it back.. No need for direct trane replacment motor. 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. Your new AC unit is not collecting water (yet) because the anticondensation coating hasn't been compromised (yet); and that's a good thing. It allows three constant fan speeds as well as an automatic fan speed and a variable burn rate and compressor and fan speed. Dave. I suppose I probably won't do so it, but out of curiosity what kind of downside might one run into? Certified Welder 4TEE3C10A1 That is excessivly loud. How does a furnace work? The house has a 3 ton trane xl20i and an xv80 (4 ton max). Then switch the jumper to your desired speed. This will show what speed each numbered tap is programmed as. Remove battery from the thermostat (or disconnect thermostat altogether). The installation guide clearly describes how to set airflow for heating mode and cooling mode. @Dave: Those were my thoughts as well. You may freely link In other units, it may be 2, 3, and 4 that are programmed. I found one glued to the back of my furnace door, one in the manual, and maybe one on-line too. The noise is there in heat or AC. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. We recommend our users to update the browser. 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. 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 real fix is to add insulation and install a second system on the second floor of most recently constructed homes with an adequate number of true ducted returns as opposed to the leaking stud-space returns contractors are so fond of. 1995-2023 MH Sub I, LLC dba Internet Brands. and as I recall, you have the HW VP IAQ stat. Anyone? the module must be a trane furnace model specific programmed and is available separate from the motor. This covers speed adjustment on a PSC motor. One of these wires will be coming from the thermostat and the other will go to the outside unit. Since I first posted this thread, my installer called Trane to get an answer to my original question. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. You should now see a red E icon in the System Mode screen next to Auto and Heating modes. So How Do We Adjust Fan Speed? One fan is inside the house, and one is outside the home. The wire's color will determine the speed settings that the motor will run at. 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. The BTU/HR capacity or tonnage of the air conditioning system should be included within the model number of the outdoor unit. The gas kicks on and is lit by the ignitor. These connected to (park) terminals, which are not used and simply hold those two additional wire speeds. Switch the Jumper On most control boards there will be a jumper that is marked to show that it controls the speed. Step 3: Find the furnace draft inducer. (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. 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. Mine. Most furnaces have a relay switch on the door cover. 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. He is committed to outdoor cooking in a Bar-B-Q pit he welded together several years ago. The system also accounts for blocked vents and dirty furnace filters, and adjusts fan speed as needed to compensate. Has anyone done this and can anyone give me a reason why I shouldn't do this? -The "System Type" is the CFM per ton to be adjusted between low, normal and high. Click System Options. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? Can airtags be tracked from an iMac desktop, with no iPhone? Again, this can usually be found in the upper-left corner. I think that when it is in enhanced mode the fan only runs at 50%, you can try changing your dip switches to see. I think the best bet would be to actually test it for a few months and see.