There is no mechanism to change this. This will help prevent injury and. They do this by coupling a sophisticated, programmable thermostat to a variable-speed motor. Related: a two stage furnace works by actually shooting less gas out, which might improve its efficiency. That will give you the most reliable results for your particular system. (Heat transfer wasn't one of my favorite classes in college - I focused more on dynamic systems, sorry.). ago. Variable Speed Blower Motor ( Genteq 2.3, 16 pin connector). By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. That is incorrect. The video will also explain other safety measures, as well as some for a demonstration which I will show. low would be 350 CFMs/ton, medium 400 CFMs/ton, high 450 CFMs/ton. 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. Each is associated with a different blower speed. 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. No problem with the boiler. Are there downsides to this. 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. H.R. The blower energy draw at a lower speed will be offset by the loss in fan wheel inertia. 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. So I continued to play around with different combinations tonight. Switched it to heat (in which case the furnace board is in control of the fan, not the stat) - got fire, no fan. On my furnace the schematic showed there were three speed settings. We have been heating the crawl space in our house for several winters because the ductwork was all torn up from rats. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin?). 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. Use tab to navigate through the menu items. To learn more, see our tips on writing great answers. A slim, removable cover will reveal the filter location. Remove two screws from each bracket leg holding the motor. We welcome your comments and suggestions. Inventor with two patents (weight training – anti-rollback for manual wheelchair) Comfort R should be off if you are using . homininet 8 mo. We recommend our users to update the browser. This helps the XR80 conserve more of the heat it produces. how to change fan speed on furnace to get more heat from your unit HVAC STARTUP TECHNICIAN 4.6K views 1 year ago Trane XV80 or XC80 Variable Speed Motor Blower Fan Not Working - $9. 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] :). 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. Is it Covered Under Homeowners Insurance or a Home Warranty? The heat exchanger can be overheated and burned out if the blower does not remove enough heat. Stage 2 Aux Heating. DoItYourself.com, founded in 1995, is the leading independent I think I had it on my hard drive, and the hard drive crashed on us last winter. My heat is running cold! 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). So How Do We Adjust Fan Speed? Turn off power at the main electric panel. 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. I'm also going to go through and make sure there are no visible leaks or damage to them. Another key difference is that the circulate . Most require that you open a box (2 screws?) The blower motor also begins running, but at low rpm. 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. Variable speed furnaces only operate at . Third-stage auxiliary heating for heat pumps and multi-stage furnaces. If power is getting to the blower motor, but the motor does not run, the motor may be burned out. Remember that CFM stands for Cubic Feet Per Minute. That said the contractor has no real incentive to get it right. Thanks for the reply. However, a higher MERV rating may not be best for your system. Sometimes you have to add more ducts to achieve the proper pressure and velocity. A second filter location for most HVAC systems and furnaces is the air handler portion of the system. The BTU/HR capacity or tonnage of the air conditioning system should be included within the model number of the outdoor unit. The wires that are used will determine the speed settings that the motor will run at. 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. The best answers are voted up and rise to the top, Not the answer you're looking for? Mine. Questions of a Do It Yourself nature should be submitted to our "DoItYourself.com Community Forums". He is committed to outdoor cooking in a Bar-B-Q pit he welded together several years ago. 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. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. I think the best bet would be to actually test it for a few months and see. However, I like the continually run the fan to even out air temperature in the house. 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. The problem is, the furnace control module doesn't use a separate speed when the unit is running in continuous FAN mode. Use dish soap and a soft-bristle brush or sponge to remove stuck-on debris. Click System Options. By pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. 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. BarnArtist, locate the wiring schematic on your furnace. In order for the filter to work properly, the right size is crucial. 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. This furnace features the common White-Rodgers Intell-Ignition circuit board. . It wasn't the noise that was bothering me, it was the desert-like sensation of swirling dry air. So if you are actually moving 1250 CFM then you are at 357 CFM/ton, which is a good setup for dehumidifying. When the system calls for heat and the inducer fan begins to run, check each pressure switch terminal. 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. 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). By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Solution: Install a new sequencer AND a new fan relay, just to be safe. What sort of strategies would a medieval military use against a fantasy giant? The arrow should face the direction the air is flowing. -The "Blower-on and Blower-off delay" time period can be selected. Thus, my blower can't be using that much electricity on high. Asking for help, clarification, or responding to other answers. Your OP was a noise complaint. The wire's color will determine the speed settings that the motor will run at. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. DoItYourself.com, founded in 1995, is the leading independent home improvement and repair website. These blower motor versions can be found in furnaces, air handlers, and packaged units. The SW2 indicates the air conditioning size. Step 3. 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. These two losses comprise the magnitude of heat losses. ASE Certified Master Auto Technician The manual document include instructions and informations on how to troubleshoot the system. I simply am unable to put my hands on the schematic. He maintains fruit and nut trees along with helping his wife with a vegetable garden. Available from Trane Dealers in select locations. To switch the jumper, you will need to hold onto it gently as you pull it out of its current setting. 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.. A continuous green light means the IFC circuit board needs replacing. Employment/Education Highlights This value is then multiplied by 150 cfm to obtain the required airflow for the furnace in heating operation. 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. This will show what speed each numbered tap is programmed as. Heres What It Means, Why You Should Monitor the Humidity Levels In Your Home. 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. But you will have a tough time measuring either on your basement Trane. I got the sv96 100k btu 2stage furnace with variable fan and the xl18 4ton ac unit. Proper duct sizing can resolve the issue you are having. 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. 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. Does a summoned creature play immediately after being summoned by a ready action? Its not advisable to slow your furnace blower speed. 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. We have a Trane XL80 furnace manual in pdf version that you can download for free. Remove the air handler. If you know what you are doing, it is very simple to adjust the speed of your furnace fan. Locate the speed wires. At night with an even lower set point I switch the fan speed to automatic. Id check that out first. 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. Then, carefully switch it to the setting of your choice and push it back into the control board. you will get the better dehumidification with the lower setting. Connect and share knowledge within a single location that is structured and easy to search. Dealers can answer questions, help you find the right products for your home, and repair your system. rev2023.3.3.43278. These are not switched off but are live all the time. home improvement and repair website. Home House & Components Systems Heating & Cooling System Air Conditioners. In terms of heat pumps, running the external blower faster may reduce i2r copper losses and hysteresis iron eddy current losses. 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) This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". I'm getting a new s9v2. Has anyone done this and can anyone give me a reason why I shouldn't do this? 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. The only alternative is to raise the discharge temperature. lower efficiency furnace) it is drafting exhaust up the flue which can't be good. View our Privacy Policy here. STEP-BY-STEP REPLACEMENT GUIDE Turn off air conditioning / heat from the thermostat. There are often five wire colors coming from your blower to your IFC. If you are having problems, find your fans users manual and use it as a guide. -The BTU/HR size is selectable between 48,000 42,000 36,000 or 30,000 BTU/HR. problems contact webmaster@doityourself.com. Divide the rated Btu input by 10,000. Your R value shouldn't change, and daily average wind speed and precipitation should have a minimal effect on the convection coefficient. Run a jumper from "R" to "Y2" and the blower will run continuously at the second-stage cooling speed. 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. The arrow should face the direction the air is flowing. On this motor module, the speed wires are red, orange, blue, yellow, and black. No need for direct trane replacment motor. 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. Before you begin this process it is a good idea to make sure that no power is going to the fan. This can be done through an independent dehumidistat or through a thermostat's DEHUM terminal (if available). AC Service Tech HVAC Training is made possible by continued support from our visitors, customers, and support from these Sponsors! 01 - Trane Furnace Control Board. I am just clueless, could it be the thermostat (really old) or something that is going to cost a billion dollars to fix? Press Apply to save and exit. But, in looking up the manual for this furnace (TUD1B100A9361), it looks like there are 4 blower speeds. It is about 1300-1400 sq feet, but then the basement was finished at some point, more or less doubling the square footage. 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. 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. Trane. There is no humidistat. I want to do what is best. Check back regularly as we are always updating and improving thiswebsite! Continue reading to learn how to lower the fan speed. -The "AC/HP CFM Adjust" is the airflow volume to be set for system, efficiency, comfort. It only takes a minute to sign up. I know I need to replace a dying blower motor in a 1992 Trane . Design Engineer/Project Manager for injection molded plastic company 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. Note: (High voltage is always going to your blower motor along with the common for the 24 volts. I assume you are speaking about dip switch settings. Slowing the blower speed reduced the noise but I take it you would still like it to be more silent. During the awake hours I Hold the fan speed at either low or medium. Know your limits. It shouldn't take more than a few minutes a day to record the data anyway. 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. 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 variable speed furnace delivers the proper amount of airflow based on the heating and cooling needs of your home. ECM Multi-Speed Blower Motor (Genteq X-13). There are often five wire colors coming from your blower to your IFC. He also builds custom tools for metal working. 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). When he's not enjoying family time with his wife and three boys, he loves tinkering with projects and geeking out on electronics. Well, it does make sense that lowering the blower speed would reduce its electrical consumption. video below! Step 4: Take out the inducer motor. The installation guide clearly describes how to set airflow for heating mode and cooling mode. and our 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). It provides quieter and more even and comfortable heat than a conventional furnace and doesnt consume electricity unnecessarily. Test your knowledge with our 1,000 question workbook along with the answer key! Remove the motor and mounting bracket. If the furnace manufacturer supplies different burners for that unit you may be risking premature failure. Blower on delay settings, which evidently have an impact on the duration and speed of the blower fan. To adjust the dip switches, turn the power off and take a flat head screw driver to lightly push the dip switches to the on/off desired position for each numbered switch. 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. *NOTE* If you attempt this, be absolutely sure that you have no power going to your system, especially before changing wires. Remove battery from the thermostat (or disconnect thermostat altogether). The constant torque/multispeed motor will have the smallest module. 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. Narrowing that hysteresis loop will: Leading to a smaller Hysteresis loop, increasing motor efficiency by reducing iron eddy current losses. Since hot air is much lighter . enjoys making jams and jellies during fruit season along with cooking meals. 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. See our Privacy Policy for more information. For example, on a package unit, only taps 3, 4 and 5 may be programmed.
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