how to change fan speed on a trane furnace

This value is then multiplied by 150 cfm to obtain the required airflow for the furnace in heating operation. Usually there will be three "speeds" ranging from 40 to 100% of airflow. 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 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. All rights reserved. Is it Covered Under Homeowners Insurance or a Home Warranty? 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. The gas kicks on and is lit by the ignitor. Example: Rated Btu Input = 60,000 / 10,000 = 6 x 150 = 900 cfm of required furnace airflow. The blower/fan seems to be running way to fast. What sort of strategies would a medieval military use against a fantasy giant? 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'm in the process of re-wiring my blower to run on high with the furnace. Fortunately, theres a simple fix if you look at your furnaces Integrated Furnace Control (IFC) board. Top 10 Spots! If the furnace manufacturer supplies different burners for that unit you may be risking premature failure. Questions of a Do It Yourself nature should be submitted to our "DoItYourself.com Community Forums". I assume you are speaking about dip switch settings. 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 manometer tells you the CFM number. You need to follow the wiring diagram inside the HVAC unit. I am currently heavily invested in studying and learning the subject as I commit myself to reducing my winter energy costs this year. The company offers a variety of furnaces to suits the needs of every home. The low pitched whine stops when fan is in high speed. The higher the MERV rating, the better the filter is at capturing specific pollutants from the air. 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. Western VA. Nov 28, 2009. The automatic feature rarely kicks in once at set point. 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. My gas furnace has two options for the blower speed: MED, and MED-HI. However, they are limited based on the total external static pressure (TESP) in the duct. If you are having problems, find your fans users manual and use it as a guide. At night with an . 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. The gas is shut off and the induction motor stops running while the blower . Once you have located the panel, remove it. 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. We are no longer supporting IE (Internet Explorer). 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. 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. Possibly you could do the same here (turn down blower and gas). 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. On most control boards there will be a jumper that is marked to show that it controls the speed. That will give you the most reliable results for your particular system. The induction motor begins running. (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.) Then switch the jumper to your desired speed. The control board has relays that regulate the voltage to each component in the furnace. Other than removing the module and seeing burnt components it must be diagnosed by a professional with a techmate tool ( allows you to test the motor and module and determine cause of error). 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. If it goes out of spec then on "very cold days" (when the furnace runs a lot) it could trigger an automatic shut off when the exchanger doesn't end up getting cooled enough, FWIW. The furnace operates for two minutes or so before it shuts down. The ohm meter should read very close to zero. On my furnace the schematic showed there were three speed settings. In order to measure air flow you could use a flow capture hood, a rotating vane anemometer, or a hot wire anemometer. My question was whether the efficiency of heat transfer thru the exchanger would be somewhat compromised due to the reduced airflow. Make sure power is off when doing any adjustment. I think I had it on my hard drive, and the hard drive crashed on us last winter. Are there downsides to this. Why do many companies reject expired SSL certificates as bugs in bug bounties? Use tab to navigate through the menu items. Since hot air is much lighter . If you want to learn about refrigerants and how they work in a system, check out our Refrigerant Charging and Service Procedures for Air Conditioning book . Does a summoned creature play immediately after being summoned by a ready action? The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. The product data guide, and label on the inside panel indicate the air . I have another question about my new Trane XV95 Furnace. The airflow adjustments on this board are pictured below. Inventor with two patents (weight training – anti-rollback for manual wheelchair) I got the sv96 100k btu 2stage furnace with variable fan and the xl18 4ton ac unit. PSC - The Permanent Split Capacitor Motor is still the most commonly used. If the blower motor is burned out, replace it. She has experience researching and creating a wide range of home improvement and garden projects, and especially enjoys learning about fireplaces and exterior design. 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. Turn off power at the main electric panel. This helps the XR80 conserve more of the heat it produces. This will help prevent injury and damage to the furnace fan. 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. No problem with the boiler. Sometimes less cmf will give the air more time in the heat exchanger thus letting it get hotter. (Although it wouldn't hurt to record those too.) Solution: Install a new sequencer AND a new fan relay, just to be safe. We also have quick reference cards for use out in the field! Again, this can usually be found in the upper-left corner. So I continued to play around with different combinations tonight. A 1.5 ton AC unit may not be large enough to cool the . Also, if you are looking for a video to better help understand this topic, check out our "Adjusting HVAC Blower Speed CFM on Furnace & AC Units!" Remove both of these wires and wire nut them together. Home House & Components Systems Heating & Cooling System Air Conditioners. Batch split images vertically in half, sequentially numbering the output files, Using indicator constraint with two variables. You may freely link to this site, and use it for non-commercial use subject to our terms of use. But I'm reasonably sure it uses less to run on high vs low then it uses to run on low vs OFF. -The "AUX Heat" makes sure that there is enough airflow when elect strip heat is called. 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. Variable speed furnaces only operate at . Select Climate from the blue menu on the left side of the page. On this board, pins 3, 4, and 5 on the SW1/1 through SW1/8 dip switch block have to do with air flow. Yes: you will save electricity costs by running your blower on low. 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. problems contact webmaster@doityourself.com. For business related inquires email us at info@acservicetech.com. I have a Trane Variable Speed Air Handler (TWE049E13FB2). During the awake hours I Hold the fan speed at either low or medium. Step 3. Then, carefully switch it to the setting of your choice and push it back into the control board. One of these wires will be coming from the thermostat and the other will go to the outside unit. Air Filters remove dust, lint, pet dander, and other pollutants so you can breathe easier knowing your indoor air quality is better with Trane. Mine has a wall switch. Proper returns are rarely a thought. How to tell which packages are held back due to phased updates, Linear Algebra - Linear transformation question. When the system calls for heat and the inducer fan begins to run, check each pressure switch terminal. Variable Speed Blower Motor ( Genteq 2.3, 16 pin connector). 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). Cookie Notice We welcome your comments and Switch the Jumper On most control boards there will be a jumper that is marked to show that it controls the speed. 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. There are also red and brown furnace speed wires. I understand the reason for slowing the air to remove humidity. 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. The wire's color will determine the speed settings that the motor will run at. The arrow should face the direction the air is flowing. These connected to (park) terminals, which are not used and simply hold those two additional wire speeds. Note: (High voltage is always going to your blower motor along with the common for the 24 volts. . The house cools off quick - too quick - and feels humid (not sure of the rh%). Typically the colors are: White = neutral speed Red = low speed Yellow = medium speed Black = high speed I.e., maybe more heat is now escaping through the exhaust. Your R value shouldn't change, and daily average wind speed and precipitation should have a minimal effect on the convection coefficient. Here's the sequence: Furnace gets call for heat. The S8X1 blower has 9 speeds. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. rev2023.3.3.43278. Disconnect between goals and daily tasksIs it me, or the industry? 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). The BTU/HR capacity or tonnage of the air conditioning system should be included within the model number of the outdoor unit. (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. Running your furnace fan all the time isn't exactly a bad thing. Most require that you open a box (2 screws?) You may freely link I know I need to replace a dying blower motor in a 1992 Trane XL80 gas furnace. When the humidity is high for what its set at. Variable Speed Blower Motor (Genteq ECM 3.0, 4 pin connector). to this site, and use it for non-commercial use subject to our terms of use. It provides quieter and more even and comfortable heat than a conventional furnace and doesnt consume electricity unnecessarily. One fan is inside the house, and one is outside the home. Proper duct sizing can resolve the issue you are having. Its time to clear the air. Pollen, dust, clothing and carpet fibers, hair spray, mold spores, Pollen, dust, clothing and carpet fibers, hair, mold spores, legionella, pet dander, Pollen, dust, clothing and carpet fibers, hair spray, mold spores, bacteria, pet dander, cooking oil, most tobacco smoke, smog, Air filters are the first defense against the pollutants in your air, but building a complete air filtration system can help support an even higher quality of indoor air. XB Trane Furnace: Is there a fan speed control on the unit. Trane XR80 Troubleshooting After examining the flashing system you should check the green light speed. By pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. If power is getting to the blower motor, but the motor does not run, the motor may be burned out. This BTU/HR capacity should be used to set the CFM for the indoor blower motor. It shouldn't take more than a few minutes a day to record the data anyway. The system might not work properly. 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. Typical setups include these wire colors with associated blower speeds. I have posted an inquiry under the Air Conditioning forum. If the Delta T continues to rise, this is due to low indoor airflow. This video is to show how you can figure out the blower speed setup in your HVAC system, and what you can do do adjust said speeds. 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. If you need assistance determining the best filter for your unit, a Trane employee would be happy to assist you. 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. He is committed to outdoor cooking in a Bar-B-Q pit he welded together several years ago. During "Fan On", the fan runs at 50% of whatever the maximum speed of the fan is. STEP-BY-STEP REPLACEMENT GUIDE Turn off air conditioning / heat from the thermostat. Adjust the fan speed, and if you're still experiencing problems, contact your local American Standard Customer Care dealer. With heating oil at $4.50/gal I can assure you without measuring anything that running my blower on low is NOT more efficient from a $$ perspective. Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace? HVAC filters help remove dust, dander, and harmful particles from the air inside your home. air flow is inadequate to match demand and duct size. It allows three constant fan speeds as well as an automatic fan speed and a variable burn rate and compressor and fan speed. 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. There are several tutorials on Youtube about how to do this step for specific inducer motor brands. It is a Trane S8X1 single stage furnace and air handler, paired with an XR16 3 ton AC unit. This will show what speed each numbered tap is programmed as. Remember that a heat pump in heating mode will need to run with roughly the same airflow speed as during AC mode even though it may not be comfortable for the building occupant. Recently I did a blower speed adjustment on the 2nd floor air handler and thought to show how it can be done. When the summer air conditioning season transitions to the fall heating season, increase the blower speed by switching the wires on the cool and heat terminals. homininet 8 mo. The system also accounts for blocked vents and dirty furnace filters, and adjusts fan speed as needed to compensate. These adjustments can be made by pulling the single wire connector and moving it to another single tab positioned horizontally in each row. with a wiring harness for the fan. 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. 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. The video will also explain other safety measures, as well as some for a demonstration which I will show. 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. Know your limits. Roughly 400 CFM is needed for every 1 ton (12,000 BTU/HR) of Heat Removal Capacity in Air Conditioning Systems. Ilook forward to responding to many more! 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. @Dave: Those were my thoughts as well. The remaining colored wires will be default speeds. Options are, for example, 4 minutes at 80%, or 30 seconds at 50%. The MERV scale rates filters from 1 to 16. My main questions are. The air handler houses the fan and fan motor and is usually located in the basement or attic. He built every permanent building on his current homestead and did all the plumbing and electrical work. Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. Yes--the efficiency of the heat exchanger will decrease. I'm not in enhanced mode. Continue reading to learn how to lower the fan speed. 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. 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. 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. Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? Click System Options. I found one glued to the back of my furnace door, one in the manual, and maybe one on-line too. Thoroughly rinse the filter. Identify the blower fan and the speed wires. ECM Multi-Speed Blower Motor (Genteq X-13). After understanding what speed each tap is programmed for, we can make proper airflow adjustments. - Answered by a verified HVAC Technician . ECM blower motors do not require an external capacitor to operate. In order to determine or change the speed, check the wiring diagram of the furnace/air handler/package unit that the motor is installed in. The manual document include instructions and informations on how to troubleshoot the system. This X-13 model shown above designates the speeds taps as numbers, not as colors, to denote each speed. Which thermostat wires control the furnace fan? Upon initial installation, these dip switches need to be adjusted for the particular unit, size, and application. Before you begin this process it is a good idea to make sure that no power is going to the fan. This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". 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. 3 of the wires will likely terminate with just a twist on cap. There are two types of fan motors found in furnaces: 1.) 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 (. *Based on third party testing of particle removal efficiency down to 0.3 microns (2005). 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. Check back regularly as we are always updating and improving thiswebsite! Divide the rated Btu input by 10,000. If your home has multiple HVAC systems, there will likely be at least one air filter for each unit. It wasn't the noise that was bothering me, it was the desert-like sensation of swirling dry air. Filters help protect the many parts of your heating and cooling unit from debris and buildup that can shorten the working life of the system. I want to increase volume flow if possible. There is no humidistat. Mutually exclusive execution using std::atomic? 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. The automatic feature rarely kicks in once at set point. These are not switched off but are live all the time. 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 you really wanted to be scientific, you could perform an experiment and post the results here. Yes, there is a way to bring up the speed on the air handler.. My first thought was that the unit was oversized, but I figured out how to check the DIP switch settings. Most furnaces have a relay switch on the door cover. He owned and operated a manufacturing business building Compact Utility Vehicles for homeowner use. Test the new speed. In other units, it may be 2, 3, and 4 that are programmed. During the awake hours I Hold the fan speed at either low or medium. My heat is running cold! Soak the filter in warm water in a bathtub or sink. Compatible with Trane systems or any standard HVAC system. 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. The noise is there in heat or AC. He also builds custom tools for metal working. How to Convert a Furnace Blower Fan Into a Stand Alone Fan, What to Do When a Furnace Blower Fan Won't Start, How to Replace the Resistor on Air Conditioner Blower Fans. 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. On this motor module, the speed wires are red, orange, blue, yellow, and black. I am just clueless, could it be the thermostat (really old) or something that is going to cost a billion dollars to fix? 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. The blower is set for 400 cfm for a 4 ton outdoor unit, and comfort-R is not enabled (all factory). In terms of heat pumps, running the external blower faster may reduce i2r copper losses and hysteresis iron eddy current losses. 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.

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