how to change fan speed on a trane furnace

I got the sv96 100k btu 2stage furnace with variable fan and the xl18 4ton ac unit. It provides quieter and more even and comfortable heat than a conventional furnace and doesnt consume electricity unnecessarily. For business related inquires email us at info@acservicetech.com. 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. He is committed to outdoor cooking in a Bar-B-Q pit he welded together several years ago. All information is provided "AS IS." We welcome your comments and Copyright These connected to (park) terminals, which are not used and simply hold those two additional wire speeds. Typical setups include these wire colors with associated blower speeds. Dealers can answer questions, help you find the right products for your home, and repair your system. 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. Remove battery from the thermostat (or disconnect thermostat altogether). When the system calls for heat and the inducer fan begins to run, check each pressure switch terminal. 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. When it is flashing fast there is heat throughout your home. If there isnt one in your home, turn it off at the breaker box. Yes--the efficiency of the heat exchanger will decrease. Air Filters remove dust, lint, pet dander, and other pollutants so you can breathe easier knowing your indoor air quality is better with Trane. Compatible with Trane systems or any standard HVAC system. The continuous fan is marked SW3. These are not switched off but are live all the time. Know your limits. Press Apply to save and exit. 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. Select your preferred wire with the warm temperature and connect it to the 'heat' port. 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. This will help prevent injury and damage to the furnace fan. Most require that you open a box (2 screws?) A dirty air filter can cause your HVAC system to go into overdrive and result in costly energy bills. Additionally, they can be identified by the presence of a removable module/bell on the end of the motor. On this control board, there are multiple adjustments for the airflow speeds. Why is there a voltage on my HDMI and coaxial cables? Use tab to navigate through the menu items. 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. For 240v units, both the L and N are hots. Move the high-speed wire to low. Variable speed furnaces only operate at . 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 . Thanks for the reply. charts are usually found on the air handler inside door to controls. Trane. Here are how my dip switches are set: Did the installer tie in a humidistat there on that V/S blower . If the furnace manufacturer supplies different burners for that unit you may be risking premature failure. What sort of strategies would a medieval military use against a fantasy giant? 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. Cockroaches and waterbugs coming in through the vents was my big clue there. If the pressure switch is functioning properly . I think the best bet would be to actually test it for a few months and see. 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. (Although it wouldn't hurt to record those too.) the module must be a trane furnace model specific programmed and is available separate from the motor. My main questions are. You should now see a red E icon in the System Mode screen next to Auto and Heating modes. 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. Each is associated with a different blower speed. If you know what you are doing, it is very simple to adjust the speed of your furnace fan. Recently I did a blower speed adjustment on the 2nd floor air handler and thought to show how it can be done. Remove two screws from each bracket leg holding the motor. Luci is a contributing writer for DoItYourself.com. Dave. The fan speed is controlled on the control board for the furnace. There are two types of fan motors found in furnaces: 1.) Disconnect between goals and daily tasksIs it me, or the industry? I'm in the process of re-wiring my blower to run on high with the furnace. 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. 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.. Check out our free Quizzes to test your knowledge here! DoItYourself.com, founded in 1995, is the leading independent @Dave: Those were my thoughts as well. Mine has a wall switch. The variable speed furnace delivers the proper amount of airflow based on the heating and cooling needs of your home. Can airtags be tracked from an iMac desktop, with no iPhone? Questions of a Do It Yourself nature should be If you have not read that yet, I would encourage you to do so! The remaining colored wires are the speed selectors for this blower motor.). video below! BarnArtist, locate the wiring schematic on your furnace. -The "AC/HP CFM Adjust" is the airflow volume to be set for system, efficiency, comfort. 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. This will help prevent injury and. I was reading the Trane XL824 thermostat installation and setup manual. Then switch the jumper to your desired speed. 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. The hot air will rise and heat the floor from beneath, a DIY form of radiant floor heating. Bundle Packs are a great way to save and get faster shipping! During "Fan On", the fan runs at 50% of whatever the maximum speed of the fan is. 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. Step 3. No problem with the boiler. DoItYourself.com, founded in 1995, is the leading independent home improvement and repair website. I just moved into a house with a Trane XR80 furnace (several years old). Privacy Policy. Tools that we use: www.amazon.com/shop/acservicetech. The S8X1 blower has 9 speeds. The furnace operates for two minutes or so before it shuts down. When you purchase through links on our site, we may earn commissions at no cost to you. with a wiring harness for the fan. Trane s9v2 should thermostat control blower speed? Our Privacy Policy governs the use of your information. Questions of a Do It Yourself nature should be submitted to our "DoItYourself.com Community Forums". For example, on a package unit, only taps 3, 4 and 5 may be programmed. The arrow should face the direction the air is flowing. Blower on delay settings, which evidently have an impact on the duration and speed of the blower fan. There is another way to wire this, but I can not find it back.. This is done so that the maximum amount of heat is gained in the building from the refrigerant. The problem is, the furnace control module doesn't use a separate speed when the unit is running in continuous FAN mode. This BTU/HR capacity should be used to set the CFM for the indoor blower motor. XB Trane Furnace: Is there a fan speed control on the unit. The system also accounts for blocked vents and dirty furnace filters, and adjusts fan speed as needed to compensate. Home House & Components Systems Heating & Cooling System Air Conditioners. Iappreciate all the comments, questions, and responses that Ireceive from each of you. This helps the XR80 conserve more of the heat it produces. I want to increase volume flow if possible. (FYI Filter was clean and furnace was recently serviced all prior to my initial investigation of the short cycling). 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. So I continued to play around with different combinations tonight. 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. 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. How can I check before my flight that the cloud separation requirements in VFR flight rules are met? If the control board is at fault, replace it. 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). Air filters are typically found behind the return vent door, often located in the ceiling or wall in the central portion of your home. There are also red and brown furnace speed wires. New XV80 Trane furnace makes noise when blower runs at low speed. 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. At night with an . home improvement and repair website. Remove the motor and mounting bracket. On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. Connect and share knowledge within a single location that is structured and easy to search. This lower blower speed enhances I'll edit my answer and include the exact parameters I'd record every day for a thorough study. Sometimes less cmf will give the air more time in the heat exchanger thus letting it get hotter. AC Service Tech HVAC Training is made possible by continued support from our visitors, customers, and support from these Sponsors! bean. 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. In the manual, it lists some settings, e.g. I.e., maybe more heat is now escaping through the exhaust. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 10 Reasons a Blower Fan Won't Start in a Furnace, AC or Heat Pump. But the 'real' one will be the one connected with a twist on cap to the fan motor. There is no humidistat. Air filters are measured by Minimum Efficiency Reporting Values (MERV). They do this by coupling a sophisticated, programmable thermostat to a variable-speed motor. Remove both of these wires and wire nut them together. How do I check if this furnace switch the blower to second speed. 4TEE3C10A1 That is excessivly loud. Variable Speed units continuously communicate with each other and your Trane thermostat to provide optimal efficiency. The blower energy draw at a lower speed will be offset by the loss in fan wheel inertia. HVAC filters help remove dust, dander, and harmful particles from the air inside your home. We welcome your comments and suggestions. The system might not work properly. Upon initial installation, these dip switches need to be adjusted for the particular unit, size, and application. 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. Reddit and its partners use cookies and similar technologies to provide you with a better experience. The only alternative is to raise the discharge temperature. Does a summoned creature play immediately after being summoned by a ready action? To help ensure you're breathing healthier air and supporting your heating and cooling system to operate at an optimal level, follow the simple steps in this video to change your furnace filter assuggested. The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. View our Privacy Policy here. Most of these are on the bottom left of the control board. Roughly 400 CFM is needed for every 1 ton (12,000 BTU/HR) of Heat Removal Capacity in Air Conditioning Systems. It only takes a minute to sign up. View our Privacy Policy here. Thanks for contributing an answer to Home Improvement Stack Exchange! This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". Radiant floor heat web sites are mysteriously silent on this simple and cheap modification of pre-exisiting systems to accomplish the same goal. He maintains fruit and nut trees along with helping his wife with a vegetable garden. 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. Test the new speed. Another common place with a schematic is on the back of the blower fan door. This covers speed adjustment on a PSC motor. To clean a reusable filter, remove the filter from the air cleaning device. The blower motor also begins running, but at low rpm. We have a Trane XL80 furnace manual in pdf version that you can download for free. to this site, and use it for non-commercial use subject to our terms of use. A properly fitted filter can also trap unwanted, and oftentimes unseen, pollutants from the air in your home, including: Start with the return vent. Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. Related: a two stage furnace works by actually shooting less gas out, which might improve its efficiency. Therefore for anybody thinking to adjust their blower speed to a low setting be mindful and use caution and listen carefully as to how the system is running. Use dish soap and a soft-bristle brush or sponge to remove stuck-on debris. Top 10 Spots! If you are having problems, find your fans users manual and use it as a guide. Possibly you could do the same here (turn down blower and gas). Heat exchange takes time. 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). Narrowing that hysteresis loop will: Leading to a smaller Hysteresis loop, increasing motor efficiency by reducing iron eddy current losses. Identify those arcade games from a 1983 Brazilian music video. The arrow should face the direction the air is flowing. Where To Find R-22 & R410A Leaks on AC Units! However, I like the continually run the fan to even out air temperature in the house. However, if your HVAC blower motor isn't too badly damaged, the technician may be able to clean and repair it so you won't have to incur the cost of a replacement. 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. 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! I'm not completely convinced on this, since the claim is made by a company that sells variable speed blowers for retrofitting HVAC systems. If the blower motor is burned out, replace it. A 1.5 ton AC unit may not be large enough to cool the . 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. He also builds custom tools for metal working. These three are connected to the "Cool", "Heat", and "Fan" terminals on the control board. 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. Can a furnace with a variable speed blower be used in a multistory house? 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. 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. In the example above, an ECM 2.3 16 pin variable speed motor is connected to an air handler control board. He has been DIY since childhood and is now a septuagenarian. I'd like to get some second opinions. The BTU/HR capacity or tonnage of the air conditioning system should be included within the model number of the outdoor unit. 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. By clicking '. Can this be adjusted I miscalculated. All rights reserved. This can be done through an independent dehumidistat or through a thermostat's DEHUM terminal (if available). Click On under Emergency Heat. air flow is inadequate to match demand and duct size. Why do many companies reject expired SSL certificates as bugs in bug bounties? The most important factor is temperature differential - the difference between the inside temperature and outside temperature. If the ohm meter comes back with an open line reading, the switch is bad and needs replaced. If you remove the common and place it on another terminal, it can burn out your motor not how you want the new furnace season to begin. Identify the blower fan and the speed wires. Which thermostat wires control the furnace fan? Divide the rated Btu input by 10,000. Has anyone done this and can anyone give me a reason why I shouldn't do this? The factory may only set two or three of these colors as actual speeds. Running your furnace fan all the time isn't exactly a bad thing. On my furnace the schematic showed there were three speed settings. The automatic feature rarely kicks in once at set point. The blower fan on this blower has four speeds. 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. Access the control board. A second filter location for most HVAC systems and furnaces is the air handler portion of the system. Trane XR80 Troubleshooting After examining the flashing system you should check the green light speed. The constant air turn over at a lower set point keeps the house comfortable. Follow us on Facebook for Quick Tips and Updates here! 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. In support of this: I found the mfr owner's manual for my furnace and in it, it states, "if you have an air-conditioning coil installed, you should switch the furnace blower speed to high to accommodate the decreased air-flow caused by the cooling coil in the plenum.". I understand the reason for slowing the air to remove humidity. suggestions. Connect the black wire to the manometer. Recently I did a blower speed adjustment on the 2nd floor air. I needed to go the opposite direction and increase fan speed. ECM Multi-Speed Blower Motor (Genteq X-13). 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. Usually, gas furnaces have a temp rise of 50F. I have posted an inquiry under the Air Conditioning forum. you will get the better dehumidification with the lower setting. To learn more, see our tips on writing great answers. My question was whether the efficiency of heat transfer thru the exchanger would be somewhat compromised due to the reduced airflow. 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) 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. You will also see the red E icon under Emergency . H.R. 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). During the awake hours I Hold the fan speed at either low or medium. Most residential furnaces were installed by the low bidder. How does a furnace work? After a bit of research, (translated: "mad google skills") I found an article claiming that lowering the blower speed may increase efficiency. Here's hoping for some good answers. The A/C will run according to the thermostat settings. Bus Driver/Substitute Teacher The higher the MERV rating, the better the filter is at capturing specific pollutants from the air. Put the air handler back. 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. One of these wires will be coming from the thermostat and the other will go to the outside unit. Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace? Your OP was a noise complaint. 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 Proper duct sizing can resolve the issue you are having. 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. 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. How to tell which packages are held back due to phased updates, Linear Algebra - Linear transformation question. Should I upgrade to a pcm br compatible thermostat? These blower motor versions can be found in furnaces, air handlers, and packaged units. I just had a Trane system installed last week and I've been very happy with it! On this board, pins 3, 4, and 5 on the SW1/1 through SW1/8 dip switch block have to do with air flow. 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. How to use Slater Type Orbitals as a basis functions in matrix method correctly? I'm not in enhanced mode. Yes: you will save electricity costs by running your blower on low. (Without enclosing my house in a climate-controlled bubble). Here are common Trane AC repairs not listed in the guide and their repair cost for parts and labor: Leaking coil and refrigerant: $1,150-$1,750 Thermostatic expansion valve (TXV): $275-$450 Compressor and refrigerant (after ten years, typically): $1,150-$1,600 Failed solder connection on refrigerant lines and refrigerant: $875-$1,220 It was working a week ago but just recently when it runs it blows out cold air. For business related inquires email us at. Mine. In Dungeon World, is the Bard's Arcane Art subject to the same failure outcomes as other spells? Cookie Notice Design Engineer/Project Manager for injection molded plastic company Typically the colors are: White = neutral speed Red = low speed Yellow = medium speed Black = high speed Change the speed. 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. Third-stage auxiliary heating for heat pumps and multi-stage furnaces. This trick only works on gas furnace systems with a multi-speed blower. The company offers a variety of furnaces to suits the needs of every home. The house has a 3 ton trane xl20i and an xv80 (4 ton max). H.R. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. Note: (High voltage is always going to your blower motor along with the common for the 24 volts. Again, this can usually be found in the upper-left corner. low would be 350 CFMs/ton, medium 400 CFMs/ton, high 450 CFMs/ton. Typical setups include these wire colors with associated blower speeds. The air handler houses the fan and fan motor and is usually located in the basement or attic. There are often five wire colors coming from your blower to your IFC. Match the positions to the desired pictures within the manufacturer's installation literature. The automatic feature rarely kicks in once at set point. One fan is inside the house, and one is outside the home. 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. *Based on third party testing of particle removal efficiency down to 0.3 microns (2005). We recommend our users to update the browser. But I guess my question is, can the air flow problem really be a simple as upping the blower speed? I think I had it on my hard drive, and the hard drive crashed on us last winter. Tied from R to BK in air handler. Connect the ohm meter to the pressure switch. The installation instructions for this furnace are needed in order to be able to know how to set these dip switches. Does that have any impact on the efficiency of the unit? Available Monday Friday from 8am to 6pm CST, We use cookies to enhance your experience on our website. #3. 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). homininet 8 mo. The heat exchanger warms up the incoming air and a blower or air handler sends the warm air throughout the home. When you open the panel, it kills the power to the furnace. 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. To switch the jumper, you will need to hold onto it gently as you pull it out of its current setting. 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.

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