Dave. . But, in looking up the manual for this furnace (TUD1B100A9361), it looks like there are 4 blower speeds. Use tab to navigate through the menu items. They do this by coupling a sophisticated, programmable thermostat to a variable-speed motor. Comfort R should be off if you are using . Sign up for our email newsletter to learn helpful HVAC tips and tricks before your purchase your system. Change the speed. XB Trane Furnace: Is there a fan speed control on the unit. 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). Divide the rated Btu input by 10,000. In Dungeon World, is the Bard's Arcane Art subject to the same failure outcomes as other spells? Variable Speed Blower Motor (Genteq ECM 3.0, 4 pin connector). Therefore I again adjusted the speed upward a bit and that seemingly has corrected the problem. 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. Click On under Emergency Heat. 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 if you are actually moving 1250 CFM then you are at 357 CFM/ton, which is a good setup for dehumidifying. The arrow should face the direction the air is flowing. The constant air turn over at a lower set point keeps the house comfortable. Employment/Education Highlights Remember that CFM stands for Cubic Feet Per Minute. This is NOT a user servicable item. Most of these are on the bottom left of the control board. The arrow should face the direction the air is flowing. Switched it to heat (in which case the furnace board is in control of the fan, not the stat) - got fire, no fan. Remove two screws from each bracket leg holding the motor. I want to increase volume flow if possible. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. BarnArtist, locate the wiring schematic on your furnace. Being an bms/controls guy I rarely have enough cfm in large buildings. The control board is communicating with the blower module in order to determine the airflow volume needed. How does a furnace work? 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. -The BTU/HR size is selectable between 48,000 42,000 36,000 or 30,000 BTU/HR. We welcome your comments and Copyright 1995-document.write(new Date().getFullYear()) MH Sub I, LLC dba Internet Brands. You have to switch the wires to the blower motor. The following list refers to each adjustment starting from the bottom and moving upward. I think the best bet would be to actually test it for a few months and see. Which thermostat wires control the furnace fan? Once you cut the power, you can remove the cover of your furnace to get access to the control board. One of these wires will be coming from the thermostat and the other will go to the outside unit. There are often five wire colors coming from your blower to your IFC. View our Privacy Policy here. Iappreciate all the comments, questions, and responses that Ireceive from each of you. Where To Find R-22 & R410A Leaks on AC Units! By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. On most control boards there will be a jumper that is marked to show that it controls the speed. *Based on third party testing of particle removal efficiency down to 0.3 microns (2005). The blower fan on this blower has four speeds. 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. - Answered by a verified HVAC Technician . 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. 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. He owned and operated a manufacturing business building Compact Utility Vehicles for homeowner use. 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. After a bit of research, (translated: "mad google skills") I found an article claiming that lowering the blower speed may increase efficiency. The best answers are voted up and rise to the top, Not the answer you're looking for? (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. Connect the black wire to the manometer. Slowing the blower speed reduced the noise but I take it you would still like it to be more silent. 80% would be great for me. It was working a week ago but just recently when it runs it blows out cold air. I am currently heavily invested in studying and learning the subject as I commit myself to reducing my winter energy costs this year. Shay Tilander is a senior editor at Family Handyman. To clean a reusable filter, remove the filter from the air cleaning device. This will show what speed each numbered tap is programmed as. The product data guide, and label on the inside panel indicate the air . According to the manufacturer's documentation, your furnace should have a 3 or 4 speed blower motor. DoItYourself.com, founded in 1995, is the leading independent home improvement and repair website. 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. Usually there will be three "speeds" ranging from 40 to 100% of airflow. To understand how this works, lets look at the wiring on your furnaces blower. 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. Is it Covered Under Homeowners Insurance or a Home Warranty? 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. Questions of a Do It Yourself nature should be submitted to our "DoItYourself.com Community Forums". 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. 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 have a standard split-system air conditioning unit with two main fans. I hope this helps you understand how to adjust the airflow speed on ECM Blower Motors! Mine. During the awake hours I Hold the fan speed at either low or medium. I connected a second thermostat to the circuit board to run the blower (R to G). Proper returns are rarely a thought. AC Service Tech HVAC Training is made possible by continued support from our visitors, customers, and support from these Sponsors! He is committed to outdoor cooking in a Bar-B-Q pit he welded together several years ago. No need for direct trane replacment motor. In order for the filter to work properly, the right size is crucial. If you have suggestions or comments they are welcome. These blower motor speeds are programmed at the manufacturer's factory for the specific equipment model number unit it is installed in. Variable speed furnaces only operate at . video below! The installation instructions for this furnace are needed in order to be able to know how to set these dip switches. When he's not enjoying family time with his wife and three boys, he loves tinkering with projects and geeking out on electronics. The heat exchanger warms up the incoming air and a blower or air handler sends the warm air throughout the home. with a wiring harness for the fan. There is no mechanism to change this. Thanks for all your continued support! He also builds custom tools for metal working. Proper duct sizing can resolve the issue you are having. The system might not work properly. Asking for help, clarification, or responding to other answers. For business related inquires email us at. If the pressure switch is functioning properly . We are no longer supporting IE (Internet Explorer). lower efficiency furnace) it is drafting exhaust up the flue which can't be good. We have been heating the crawl space in our house for several winters because the ductwork was all torn up from rats. For more information, please see our What sort of strategies would a medieval military use against a fantasy giant? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. This is done so that the maximum amount of heat is gained in the building from the refrigerant. Cockroaches and waterbugs coming in through the vents was my big clue there. 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 heat exchanger can be overheated and burned out if the blower does not remove enough heat. Again, this can usually be found in the upper-left corner. 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. Check out our free Quizzes to test your knowledge here! However, they are limited based on the total external static pressure (TESP) in the duct. -The "System Type" is the CFM per ton to be adjusted between low, normal and high. I was reading the Trane XL824 thermostat installation and setup manual. HVAC filters help remove dust, dander, and harmful particles from the air inside your home. 10 Reasons a Blower Fan Won't Start in a Furnace, AC or Heat Pump. You will need to find the main cover panel on your fan. 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. But you will have a tough time measuring either on your basement Trane. 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. You can verify the actual CFM by measuring the TESP of the system and comparing it to the manufacturer's airflow data sheet. 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. Turn off the power source that is connected to the furnace blower. Move the high-speed wire to low. The video will also explain other safety measures, as well as some for a demonstration which I will show. So I continued to play around with different combinations tonight. Test your knowledge with our 1,000 question workbook along with the answer key! Connect the common wire to the neutral terminal of the furnace's control board. A second filter location for most HVAC systems and furnaces is the air handler portion of the system. The fan speed is very low when not heating/cooling. These are not switched off but are live all the time. Blower on delay settings, which evidently have an impact on the duration and speed of the blower fan. Third-stage auxiliary heating for heat pumps and multi-stage furnaces. In order to measure air flow you could use a flow capture hood, a rotating vane anemometer, or a hot wire anemometer. Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. Here are some of them: Better circulation of heated and cooled air. If you really wanted to be scientific, you could perform an experiment and post the results here. Related: a two stage furnace works by actually shooting less gas out, which might improve its efficiency. 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. It offers three settings: 525 RPM for saving energy, 900 RPM for heating, or 1100 RPM for air conditioning. The noise is there in heat or AC. Turn off the emergency HVAC shutoff switch Remove top and bottom cover panels on the air handler / furnace unit (fig.5.1). If you do, you may not have enough air flow over the heat exchanger, resulting in overheating and eventually a shorter exchanger life span. Many gas-fired, high-efficiency furnaces also save on the electricity required to power the blower motor, though this savings is not factored into the AFUE rating. 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) Select Climate from the blue menu on the left side of the page. 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. 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. Step 2: Remove the panel cover of the furnace. I'd like to get some second opinions. Step 3. Anyone? Please note that mounting bracket consists of top and bottom brackets joined by 6 metal screws (fig.6.9). (Although it wouldn't hurt to record those too.) Your new AC unit is not collecting water (yet) because the anticondensation coating hasn't been compromised (yet); and that's a good thing. These adjustments can be made by pulling the single wire connector and moving it to another single tab positioned horizontally in each row. Stage 2 Aux Heating. When it is flashing fast there is heat throughout your home. Mine has a wall switch. In terms of heat pumps, running the external blower faster may reduce i2r copper losses and hysteresis iron eddy current losses. 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. In the example above, an ECM 2.3 16 pin variable speed motor is connected to an air handler control board. I just had a Trane system installed last week and I've been very happy with it! A properly fitted filter can also trap unwanted, and oftentimes unseen, pollutants from the air in your home, including: Start with the return vent. 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 variable speed furnace delivers the proper amount of airflow based on the heating and cooling needs of your home. He has been DIY since childhood and is now a septuagenarian. 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. Here are how my dip switches are set: Did the installer tie in a humidistat there on that V/S blower . Trane XR80 Troubleshooting After examining the flashing system you should check the green light speed. 4TEE3C10A1 That is excessivly loud. So the blower motor is dead. But the 'real' one will be the one connected with a twist on cap to the fan motor. A slim, removable cover will reveal the filter location. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. Home House & Components Systems Heating & Cooling System Air Conditioners. He is also an HVACR Contracting Business owner of 16 years and holds an NJ HVACR Master License. Run a jumper from "R" to "Y2" and the blower will run continuously at the second-stage cooling speed. the module must be a trane furnace model specific programmed and is available separate from the motor. 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. 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. Realizing this after a very long period of investigation, I eventually turned up the fan speed dial; this seemed to correct the problem initially, until one night a week later lying in bed I heard it do the same thing but but after a much longer run time. It provides quieter and more even and comfortable heat than a conventional furnace and doesnt consume electricity unnecessarily. Bundle Packs are a great way to save and get faster shipping! A 90 percent-plus furnace needs 150 cfm per 10,000 Btu of input. I guess you are talking about a 3 speed direct drive motor with 1/2 shaft. 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.