how to change fan speed on a trane furnace how to change fan speed on a trane furnace

The remaining colored wires are the speed selectors for this blower motor.). homininet 8 mo. A MERV rating speaks to the filters ability to capture large particles. Locate your thermostat on the page and click System Mode. You will need to find the main cover panel on your fan. 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 SW2 indicates the air conditioning size. In this case, to adjust the blower speeds, move the dip switches (in the red section of the control board) to the positions shown in the manufacturer's installation instructions. 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. It allows three constant fan speeds as well as an automatic fan speed and a variable burn rate and compressor and fan 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 S8X1 blower has 9 speeds. 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. R and BK are tied together. The system also accounts for blocked vents and dirty furnace filters, and adjusts fan speed as needed to compensate. How exactly could I test this? Oil Furnaces may have a temp rise of 50-60F. Since hot air is much lighter . Sometimes less cmf will give the air more time in the heat exchanger thus letting it get hotter. Put the air handler back. It helps to have over 50 years of farming and ranching experience. But, in looking up the manual for this furnace (TUD1B100A9361), it looks like there are 4 blower speeds. It only takes a minute to sign up. 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 airflow adjustments on this board are pictured below. All rights reserved. Available from Trane Dealers in select locations. Second-stage auxiliary heating for heat pumps and multi-stage furnaces. Remove both of these wires and wire nut them together. 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. DoItYourself.com, founded in 1995, is the leading independent In the manual, it lists some settings, e.g. 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. The fan speed is controlled on the control board for the furnace. Step 3: Adjust the Pulley on the Blower Drive Motor There are also red and brown furnace speed wires. - The "Continuous Fan" refers to when the G terminal is powered for the fan only to run. Know your limits. Black: High; Yellow: Medium-high ; Blue or brown: Medium-low; Red: Low; 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) The noise is there in heat or AC. Cookie Notice To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Does that have any impact on the efficiency of the unit? I know that it has been done. The Trane XR80's heavy steel insulated cabinet has two benefits: Holds in more of the heat that you pay for Decreases operating noise Because of its heavy steel insulated cabinet, the XR80 can experience as little as 1% of air leakage. Divide the rated Btu input by 10,000. In the example of an ECM 3.0 with a 4 pin connector, the wires are not switched or moved to adjust the airflow settings. Air filters are measured by Minimum Efficiency Reporting Values (MERV). On this board, pins 3, 4, and 5 on the SW1/1 through SW1/8 dip switch block have to do with air flow. The manometer tells you the CFM number. Most homes have a standard split-system air conditioning unit with two main fans. Thanks for contributing an answer to Home Improvement Stack Exchange! 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. Adjusting the Airflow Speed on ECM Blower Fan Motors! But the 'real' one will be the one connected with a twist on cap to the fan motor. The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. -The "AC/HP CFM Adjust" is the airflow volume to be set for system, efficiency, comfort. This lower blower speed enhances To understand how this works, let's look at the wiring on your furnace's blower. According to the company, the slower circulation speed reduces energy consumption by 75%. I just had a Trane system installed last week and I've been very happy with it! When the system calls for heat and the inducer fan begins to run, check each pressure switch terminal. Published: 05/19/2021 Author: Craig Migliaccio, About the Author: Craig is the owner of AC Service Tech LLC and the Author of the book Refrigerant Charging and Service Procedures for Air Conditioning. The control board has relays that regulate the voltage to each component in the furnace. 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. 01 - Trane Furnace Control Board. According to the manufacturer's documentation, your furnace should have a 3 or 4 speed blower motor. A properly fitted filter can also trap unwanted, and oftentimes unseen, pollutants from the air in your home, including: Start with the return vent. Id check that out first. -The "Blower-on and Blower-off delay" time period can be selected. air flow is inadequate to match demand and duct size. Switch the Jumper On most control boards there will be a jumper that is marked to show that it controls the speed. I just moved into a house with a Trane XR80 furnace (several years old). Another key difference is that the circulate . 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. We also have quick reference cards for use out in the field! He is also an HVACR Contracting Business owner of 16 years and holds an NJ HVACR Master License. The hot air will rise and heat the floor from beneath, a DIY form of radiant floor heating. He farmed commercial garden produce for several years. Step 2: Remove the panel cover of the furnace. On most control boards there will be a jumper that is marked to show that it controls the speed. In terms of heat pumps, running the external blower faster may reduce i2r copper losses and hysteresis iron eddy current losses. The heat exchanger warms up the incoming air and a blower or air handler sends the warm air throughout the home. You will also see the red E icon under Emergency . I hope this helps you understand how to adjust the airflow speed on ECM Blower Motors! Switched it to heat (in which case the furnace board is in control of the fan, not the stat) - got fire, no fan. Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace? Heres What It Means, Why You Should Monitor the Humidity Levels In Your Home. Additionally, they can be identified by the presence of a removable module/bell on the end of the motor. The automatic feature rarely kicks in once at 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. and as I recall, you have the HW VP IAQ stat. This trick only works on gas furnace systems with a multi-speed blower. 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] :). suggestions. Unlike a conventional systemwhere the furnace goes on, blows hot air into the house at full force for a few minutes, and then shuts offa variable-speed or variable-capacity system runs the blower for longer periods at lower speeds. Fortunately, theres a simple fix if you look at your furnaces Integrated Furnace Control (IFC) board. Example: Rated Btu Input = 60,000 / 10,000 = 6 x 150 = 900 cfm of required furnace airflow. This is NOT a user servicable item. Switch the power back on and test it. You need to follow the wiring diagram inside the HVAC unit. These three are connected to the "Cool", "Heat", and "Fan" terminals on the control board. By clicking '. 4TEE3C10A1 That is excessivly loud. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? 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). 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. This BTU/HR capacity should be used to set the CFM for the indoor blower motor. Its time to clear the air. Turn off the emergency HVAC shutoff switch Remove top and bottom cover panels on the air handler / furnace unit (fig.5.1). Any takers? 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). And I'd guess you're not supposed to push it too close to the limits as things may change slightly over time (filter will get dirtier, blades dirtier). Why do many companies reject expired SSL certificates as bugs in bug bounties? My first thought was that the unit was oversized, but I figured out how to check the DIP switch settings. All information is provided "AS IS." This will increase the number. 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. 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 3. A description of how to change motor speeds with a multiple speed fan motor on an IFC controlled furnace.This video is part of the heating and cooling series of training videos made to accompany my websites: www.graycoolingman.com and www.grayfurnaceman.com to pass on what I have learned in many years of service and repair. 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. Recently I did a blower speed adjustment on the 2nd floor air handler and thought to show how it can be done. Upon initial installation, these dip switches need to be adjusted for the particular unit, size, and application. 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. These connected to (park) terminals, which are not used and simply hold those two additional wire speeds. View our Privacy Policy here. For business related inquires email us at. 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). Therefore I again adjusted the speed upward a bit and that seemingly has corrected the problem. The installation instructions for this furnace are needed in order to be able to know how to set these dip switches. Test the new speed. DoItYourself.com, founded in 1995, is the leading independent home improvement and repair website. The company offers a variety of furnaces to suits the needs of every home. When you purchase through links on our site, we may earn commissions at no cost to you. 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. If you are having problems, find your fans users manual and use it as a guide. Top 10 Spots! It is a Trane S8X1 single stage furnace and air handler, paired with an XR16 3 ton AC unit. A 1.5 ton AC unit may not be large enough to cool the . Roughly 400 CFM is needed for every 1 ton (12,000 BTU/HR) of Heat Removal Capacity in Air Conditioning Systems. Change the speed. Yes, there is a way to bring up the speed on the air handler.. I suppose I probably won't do so it, but out of curiosity what kind of downside might one run into? 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. Allow the filter to completely dry before returning it to the device. Check out our free Quizzes to test your knowledge here! The continuous fan is marked SW3. low would be 350 CFMs/ton, medium 400 CFMs/ton, high 450 CFMs/ton. . problems contact webmaster@doityourself.com. Most of these are on the bottom left of the control board. H.R. 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 (. 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. So How Do We Adjust Fan Speed? If the control board is at fault, replace it. Proper returns are rarely a thought. Trane s9v2 should thermostat control blower speed? I found one glued to the back of my furnace door, one in the manual, and maybe one on-line too. In the pictured example above, if the #5 speed tap is programmed for 1600 CFM and #4 is programmed for 1200 CFM and #5 is presently connected to the "Cool" terminal on the control board via the black wire, we know that the unit is running at around 1600 CFM as long as the TESP across the unit is not too high. 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. After a bit of research, (translated: "mad google skills") I found an article claiming that lowering the blower speed may increase efficiency. 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. Helm is an accomplished DIY craftsman. Variable Speed Blower Motor (Genteq ECM 3.0, 4 pin connector). At night with an even lower set point I switch the fan speed to automatic. Cut the wire's terminal connector off with wire cutters. Before you begin this process it is a good idea to make sure that no power is going to the fan. Heat exchange takes time. These are not switched off but are live all the time. Here's the sequence: Furnace gets call for heat. On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. It is about 1300-1400 sq feet, but then the basement was finished at some point, more or less doubling the square footage. On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. 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. This value is then multiplied by 150 cfm to obtain the required airflow for the furnace in heating operation. If you have not read that yet, I would encourage you to do so! To switch the jumper, you will need to hold onto it gently as you pull it out of its current setting. 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. XB Trane Furnace: Is there a fan speed control on the unit. submitted to our "DoItYourself.com Community Forums".