how to change fan speed on a trane furnace

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. A second filter location for most HVAC systems and furnaces is the air handler portion of the system. We are no longer supporting IE (Internet Explorer) as we strive to provide site experiences for browsers that support new web standards and security practices. Asking for help, clarification, or responding to other answers. We welcome your comments and I want to do what is best. The wires are several different colors. You should now see a red E icon in the System Mode screen next to Auto and Heating modes. 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. 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. How do I check if this furnace switch the blower to second speed. Your R value shouldn't change, and daily average wind speed and precipitation should have a minimal effect on the convection coefficient. 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. This covers speed adjustment on a PSC motor. As a side note, lowering furnace (heating) blower speed should apparently only be done if it doesn't reduce the "heat rise" (difference in temperature between the intake and supply air, if I understand it, also known as the "delta T") past the manufacturer recommended value for that furnace. 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. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. During "Fan On", the fan runs at 50% of whatever the maximum speed of the fan is. PSC - The Permanent Split Capacitor Motor is still the most commonly used. 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 blower speed for a gas heater is selected so that it is comfortable for the building occupant but also so that the Delta T (Temp Rise) does not continue to rise. Inventor with two patents (weight training – anti-rollback for manual wheelchair) Anyone? 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. A MERV 16 filters particles at a level near that or a HEPA. Variable Speed Blower Motor ( Genteq 2.3, 16 pin connector). Variable Speed Blower Motor (Genteq ECM 3.0, 4 pin connector). one room doesnt get as warm or as cool as the others. Craig is a licensed Teacher of HVACR, Sheet Metal, and Building Maintenance in the State of New Jersey of the USA. HVAC system for small church has twin Trane XR90 units installed in 2009 to replace a unit with a much larger single blower. Tied from R to BK in air handler. But I guess my question is, can the air flow problem really be a simple as upping the blower speed? Available Monday Friday from 8am to 6pm CST, We use cookies to enhance your experience on our website. These are not switched off but are live all the time. Another key difference is that the circulate . Our Privacy Policy governs the use of your information. Mine. 1995-2023 MH Sub I, LLC dba Internet Brands. Turn off the emergency HVAC shutoff switch Remove top and bottom cover panels on the air handler / furnace unit (fig.5.1). 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. Connect the black wire to the manometer. If the control board is at fault, replace it. Run a jumper from "R" to "Y2" and the blower will run continuously at the second-stage cooling speed. If the blower motor hums, check the blower fan to ensure that it spins freely. In Dungeon World, is the Bard's Arcane Art subject to the same failure outcomes as other spells? Changing your HVAC and furnace air filter is a vital part of home maintenance. The remaining colored wires will be default speeds. The main difference is that the fan ON setting means that the fan is set to run as long as the furnace is switched ON. The blower/fan seems to be running way to fast. Fortunately, theres a simple fix if you look at your furnaces Integrated Furnace Control (IFC) board. I found one glued to the back of my furnace door, one in the manual, and maybe one on-line too. 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. There are often five wire colors coming from your blower to your IFC. So the blower motor is dead. This X-13 model shown above designates the speeds taps as numbers, not as colors, to denote each speed. 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. The company offers a variety of furnaces to suits the needs of every home. These blower motor speeds are programmed at the manufacturer's factory for the specific equipment model number unit it is installed in. *NOTE* If you attempt this, be absolutely sure that you have no power going to your system, especially before changing wires. He is committed to outdoor cooking in a Bar-B-Q pit he welded together several years ago. Can a furnace with a variable speed blower be used in a multistory house? 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. 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. Know your limits. 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. Step 2: Remove the panel cover of the furnace. This will allow you to access the control board. charts are usually found on the air handler inside door to controls. Another common place with a schematic is on the back of the blower fan door. It was working a week ago but just recently when it runs it blows out cold air. We recommend our users to update the browser. Step 3. 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. Invention prototypes are another of his many accomplishments. 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). He farmed commercial garden produce for several years. I know I need to replace a dying blower motor in a 1992 Trane . 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. I want to increase volume flow if possible. (Although it wouldn't hurt to record those too.) All information is provided "AS IS." Usually, gas furnaces have a temp rise of 50F. Sometimes you have to add more ducts to achieve the proper pressure and velocity. Meanwhile, the Circulate setting is a hybrid and auto that keeps the fan running throughout heating cycles and then again for a few minutes every hour even when the furnace is off. To switch the jumper, you will need to hold onto it gently as you pull it out of its current setting. This furnace features the common White-Rodgers Intell-Ignition circuit board. The automatic feature rarely kicks in once at set point. The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. Id check that out first. Use tab to navigate through the menu items. (Without enclosing my house in a climate-controlled bubble). I'm getting a new s9v2. Then switch the jumper to your desired speed. Now, I haven't done the measurement to learn how much electricity my blower uses on low vs high. Step 4: Take out the inducer motor. 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. The noise is there in heat or AC. All information is provided "AS IS." In order to measure air flow you could use a flow capture hood, a rotating vane anemometer, or a hot wire anemometer. My gas furnace has two options for the blower speed: MED, and MED-HI. Trane is a top rated US company of HVAC systems that offer quality and reliability. Making statements based on opinion; back them up with references or personal experience. Switch the power back on and test it. 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. air flow is inadequate to match demand and duct size. Stage 2 Aux Heating. 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. Website operating Options are, for example, 4 minutes at 80%, or 30 seconds at 50%. If you really wanted to be scientific, you could perform an experiment and post the results here. He built every permanent building on his current homestead and did all the plumbing and electrical work. 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. The noise of forced air is annoying. The heat exchanger can be overheated and burned out if the blower does not remove enough heat. You may freely link The SW2 indicates the air conditioning size. This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". Recently I did a blower speed adjustment on the 2nd floor air. 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 will show what speed each numbered tap is programmed as. 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. Most homes are best served by a filter with a MERV rating of 8 to 13, but refer to your system's user manual or with a Trane employee for guidance. There are often five wire colors coming from your blower to your IFC. I am just clueless, could it be the thermostat (really old) or something that is going to cost a billion dollars to fix? The blower motor also begins running, but at low rpm. Continue reading to learn how to lower the fan speed. Its time to clear the air. The product data guide, and label on the inside panel indicate the air . Once you have located the panel, remove it. No problem with the boiler. The factory may only set two or three of these colors as actual speeds. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. In the example above, an ECM 2.3 16 pin variable speed motor is connected to an air handler control board. We have been heating the crawl space in our house for several winters because the ductwork was all torn up from rats. Here are how my dip switches are set: Did the installer tie in a humidistat there on that V/S blower . When it is flashing fast there is heat throughout your home. H.R. Luci is a contributing writer for DoItYourself.com. STEP-BY-STEP REPLACEMENT GUIDE Turn off air conditioning / heat from the thermostat. Example: Rated Btu Input = 60,000 / 10,000 = 6 x 150 = 900 cfm of required furnace airflow. One of these wires will be coming from the thermostat and the other will go to the outside unit. Locate your thermostat on the page and click System Mode. In terms of heat pumps, running the external blower faster may reduce i2r copper losses and hysteresis iron eddy current losses. 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 low pitched whine stops when fan is in high speed. ECM blower motors do not require an external capacitor to operate. 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. So I continued to play around with different combinations tonight. Comfort R should be off if you are using . Air filters are measured by Minimum Efficiency Reporting Values (MERV). 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. Switch the Jumper On most control boards there will be a jumper that is marked to show that it controls the speed. Craig creates educational HVACR articles and videos which are posted at https://www.acservicetech.com & https://www.youtube.com/acservicetechchannel & https://www.facebook.com/acservicetech/. View our Privacy Policy here. Copyright 1995-document.write(new Date().getFullYear()) MH Sub I, LLC dba Internet Brands. The airflow adjustments on this board are pictured below. So How Do We Adjust Fan Speed? The same is true when changing the air duct filter. 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. 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. Are there downsides to this. homininet 8 mo. You will need to look at what the programmed speed designations are for M1/M2/M3/M4/M5 on the wiring diagram of the HVAC unit. 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. 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). These blower motor versions can be found in furnaces, air handlers, and packaged units. You will also see the red E icon under Emergency . If you have not read that yet, I would encourage you to do so! Secure the old speed wire by twisting a wire nut over the end. On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. thanks in advance. 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. This will help prevent injury and. I am currently heavily invested in studying and learning the subject as I commit myself to reducing my winter energy costs this year. Disconnect between goals and daily tasksIs it me, or the industry? Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace? Any takers? (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. However, a higher MERV rating may not be best for your 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. 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. How can I check before my flight that the cloud separation requirements in VFR flight rules are met? Being an bms/controls guy I rarely have enough cfm in large buildings. 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. At night with an even lower set point I switch the fan speed to automatic. Connect the ohm meter to the pressure switch. 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. Can this be adjusted BarnArtist, locate the wiring schematic on your furnace. ECM Multi-Speed Blower Motor (Genteq X-13). 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. No need for direct trane replacment motor. By pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. These blower motor versions can be found in furnaces, air handlers, and packaged units. Turn off power at the main electric panel. and as I recall, you have the HW VP IAQ stat. I think that when it is in enhanced mode the fan only runs at 50%, you can try changing your dip switches to see.

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