Trane is a top rated US company of HVAC systems that offer quality and reliability. The product data guide, and label on the inside panel indicate the air . The following list refers to each adjustment starting from the bottom and moving upward. Upon initial installation, these dip switches need to be adjusted for the particular unit, size, and application. It would have no affect on the Heat settings. 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. 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 Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? You have to switch the wires to the blower motor. My first thought was that the unit was oversized, but I figured out how to check the DIP switch settings. I just moved into a house with a Trane XR80 furnace (several years old). The automatic feature rarely kicks in once at set point. in this thread in this sub-forum in the entire site. If you have suggestions or comments they are welcome. 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). The A/C will run according to the thermostat settings. 81K views 2 years ago 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. Soak the filter in warm water in a bathtub or sink. 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. AC Service Tech HVAC Training is made possible by continued support from our visitors, customers, and support from these Sponsors! Your R value shouldn't change, and daily average wind speed and precipitation should have a minimal effect on the convection coefficient. I have a Trane Variable Speed Air Handler (TWE049E13FB2). Dave. Here are some of them: Better circulation of heated and cooled air. These adjustments can be made by pulling the single wire connector and moving it to another single tab positioned horizontally in each row. -The "Blower-on and Blower-off delay" time period can be selected. However, I like the continually run the fan to even out air temperature in the house. That is incorrect. Trane. bean. Example: Rated Btu Input = 60,000 / 10,000 = 6 x 150 = 900 cfm of required furnace airflow. What sort of strategies would a medieval military use against a fantasy giant? I installed a Thermo Control 2000 boiler and first fired it up this Friday. However, a higher MERV rating may not be best for your system. Learn more about Stack Overflow the company, and our products. 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. Solution: Install a new sequencer AND a new fan relay, just to be safe. Compatible with Trane systems or any standard HVAC system. 80% would be great for me. 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. 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. I connected a second thermostat to the circuit board to run the blower (R to G). This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". In humid climates, 350 CFM per ton can be selected in order to remove more moisture from the air. Now that its gotten cold, we've noticed that several of the heat register barely have any air coming out of them. Iappreciate all the comments, questions, and responses that Ireceive from each of you. Wires from the 16 pin plug are connected to this board. Tied from R to BK in air handler. The MERV scale rates filters from 1 to 16. Remove the air handler. The best answers are voted up and rise to the top, Not the answer you're looking for? When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. - Answered by a verified HVAC Technician . You need to follow the wiring diagram inside the HVAC unit. He built every permanent building on his current homestead and did all the plumbing and electrical work. 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. They have a built in or attached capacitor that will allow the motor to turn on, turn off and run at a constant speed when running. There are also red and brown furnace speed wires. American Standard air handler troubleshooting Running your furnace fan all the time isn't exactly a bad thing. Trane s9v2 should thermostat control blower speed? 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. If you really wanted to be scientific, you could perform an experiment and post the results here. 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. Allow the filter to completely dry before returning it to the device. Well, it does make sense that lowering the blower speed would reduce its electrical consumption. Change the speed. 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. Note also that there is always just "one blower" but that blower may or may not be variable speed, etc. So How Do We Adjust Fan Speed? This will increase the number. 10 Reasons a Blower Fan Won't Start in a Furnace, AC or Heat Pump. Follow us on Facebook for Quick Tips and Updates here! The system might not work properly. Our Privacy Policy governs the use of your information. *Based on third party testing of particle removal efficiency down to 0.3 microns (2005). 3 of the wires will likely terminate with just a twist on cap. 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. This will help prevent injury and. This value is then multiplied by 150 cfm to obtain the required airflow for the furnace in heating operation. She has experience researching and creating a wide range of home improvement and garden projects, and especially enjoys learning about fireplaces and exterior design. Radiant floor heat web sites are mysteriously silent on this simple and cheap modification of pre-exisiting systems to accomplish the same goal. Cockroaches and waterbugs coming in through the vents was my big clue there. @Dave: Those were my thoughts as well. 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. When he's not enjoying family time with his wife and three boys, he loves tinkering with projects and geeking out on electronics. Heat exchange takes time. Remember that CFM stands for Cubic Feet Per Minute. To learn more, see our tips on writing great answers. All information is provided "AS IS." One of these wires will be coming from the thermostat and the other will go to the outside unit. 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. We have been heating the crawl space in our house for several winters because the ductwork was all torn up from rats. Most of these are on the bottom left of the control board. Yes: you will save electricity costs by running your blower on low. Check out our free Quizzes to test your knowledge here! PSC - The Permanent Split Capacitor Motor is still the most commonly used. The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. homininet 8 mo. 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). This covers speed adjustment on a PSC motor. The heat exchanger warms up the incoming air and a blower or air handler sends the warm air throughout the home. home improvement and repair website. All rights reserved. The boiler is feeding a DHW sidearm and furnace plenum HX. 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. 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. Yes, there is a way to bring up the speed on the air handler.. I know that it has been done. The manual document include instructions and informations on how to troubleshoot the system. The problem is, the furnace control module doesn't use a separate speed when the unit is running in continuous FAN mode. Related: a two stage furnace works by actually shooting less gas out, which might improve its efficiency. Mutually exclusive execution using std::atomic? If the furnace manufacturer supplies different burners for that unit you may be risking premature failure. Oil Furnaces may have a temp rise of 50-60F. 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!" Air filters are typically found behind the return vent door, often located in the ceiling or wall in the central portion of your home. 3.5 x 400 = 1400 CFM. If you know what you are doing, it is very simple to adjust the speed of your furnace fan. How does a furnace work? 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. Air filters should be changed every 90 days unless otherwise indicated on the packaging or by the manufacturer. *NOTE* If you attempt this, be absolutely sure that you have no power going to your system, especially before changing wires. Remove both of these wires and wire nut them together. I want to increase volume flow if possible. 01 - Trane Furnace Control Board. Air Filter - Be sure to check the air filter and replace if necessary. 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. Remove two screws from each bracket leg holding the motor. I needed to go the opposite direction and increase fan speed. 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. Second-stage auxiliary heating for heat pumps and multi-stage furnaces. Use dish soap and a soft-bristle brush or sponge to remove stuck-on debris. You may freely link The NET difference of the above two figures is your savings or cost. I am just clueless, could it be the thermostat (really old) or something that is going to cost a billion dollars to fix? We recommend our users to update the browser. Once you cut the power, you can remove the cover of your furnace to get access to the control board. Bus Driver/Substitute Teacher 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. 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. In order for the filter to work properly, the right size is crucial. You can verify the actual CFM by measuring the TESP of the system and comparing it to the manufacturer's airflow data sheet. If the blower motor hums, check the blower fan to ensure that it spins freely. Switch the Jumper On most control boards there will be a jumper that is marked to show that it controls the speed. 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. For business related inquires email us at. 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. - The "Continuous Fan" refers to when the G terminal is powered for the fan only to run. If you need assistance determining the best filter for your unit, a Trane employee would be happy to assist you. To begin, turn off the power to your furnace. ECM Multi-Speed Blower Motor (Genteq X-13). There are often five wire colors coming from your blower to your IFC. My gas furnace has two options for the blower speed: MED, and MED-HI. to this site, and use it for non-commercial use subject to our terms of use. Its time to clear the air. Air filters are measured by Minimum Efficiency Reporting Values (MERV). Switch the power back on and test it. (Although it wouldn't hurt to record those too.) Reddit and its partners use cookies and similar technologies to provide you with a better experience. Locate the speed wires. 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. Disconnect between goals and daily tasksIs it me, or the industry? Air Filters remove dust, lint, pet dander, and other pollutants so you can breathe easier knowing your indoor air quality is better with Trane. We welcome your comments and submitted to our "DoItYourself.com Community Forums". Step 3: Find the furnace draft inducer. Heating, Cooling, Air Conditioning, Ventilation and T-Stat Controls, 3-Speed, 4-Wire Ceiling Fan Switch Wiring. He maintains fruit and nut trees along with helping his wife with a vegetable garden. Mine has a wall switch. Typically the colors are: White = neutral speed Red = low speed Yellow = medium speed Black = high speed Black: High; Yellow: Medium-high ; Blue or brown: Medium-low; Red: Low; If the blower motor is burned out, replace it. the module must be a trane furnace model specific programmed and is available separate from the motor. The system also accounts for blocked vents and dirty furnace filters, and adjusts fan speed as needed to compensate. 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. I got the sv96 100k btu 2stage furnace with variable fan and the xl18 4ton ac unit. The S8X1 blower has 9 speeds. Cross country truck driver -- over dimensional freight The constant torque/multispeed motor will have the smallest module. When the R-G circuit is made, the blower motor operates on heating speed. Being an bms/controls guy I rarely have enough cfm in large buildings. Click System Options. Most require that you open a box (2 screws?) 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. The gas is shut off and the induction motor stops running while the blower . Variable Speed units continuously communicate with each other and your Trane thermostat to provide optimal efficiency. Locate the wire for the new speed setting ("medium" or "low"), remove the wire nut from its end and use wire strippers to strip 1/2-inch of insulation from the end of the wire. The most important factor is temperature differential - the difference between the inside temperature and outside temperature. Since I first posted this thread, my installer called Trane to get an answer to my original question. Click On under Emergency Heat. 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. It is about 1300-1400 sq feet, but then the basement was finished at some point, more or less doubling the square footage. 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. Stage 3 Aux Heating. In other units, it may be 2, 3, and 4 that are programmed. Usually there will be three "speeds" ranging from 40 to 100% of airflow. 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. I understand the reason for slowing the air to remove humidity. 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. 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. ECM blower motors do not require an external capacitor to operate. 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. Why is my furnace blower running at low speed? 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. I simply am unable to put my hands on the schematic. If power is getting to the blower motor, but the motor does not run, the motor may be burned out. STEP-BY-STEP REPLACEMENT GUIDE Turn off air conditioning / heat from the thermostat. There are only a few steps required for most units and having the control will allow you to get your unit to give you the service you need. The ohm meter should read very close to zero. Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace? This lower blower speed enhances 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. First, make sure that power is getting to the motor. enjoys making jams and jellies during fruit season along with cooking meals. These blower motor versions can be found in furnaces, air handlers, and packaged units. The wire's color will determine the speed settings that the motor will run at. There are two types of fan motors found in furnaces: 1.) Should I upgrade to a pcm br compatible thermostat? He farmed commercial garden produce for several years. Questions of a Do It Yourself nature should be Slowing the blower speed reduced the noise but I take it you would still like it to be more silent. 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. Thoroughly rinse the filter. Move the high-speed wire to low. You will need to find the main cover panel on your fan. See our Privacy Policy for more information. 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. with a wiring harness for the fan. This trick only works on gas furnace systems with a multi-speed blower. I'm not completely convinced on this, since the claim is made by a company that sells variable speed blowers for retrofitting HVAC systems. Copyright 1995-document.write(new Date().getFullYear()) MH Sub I, LLC dba Internet Brands. A 90 percent-plus furnace needs 150 cfm per 10,000 Btu of input. 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). thanks in advance. This is NOT a user servicable item. Typical setups include these wire colors with associated blower speeds. How can I check before my flight that the cloud separation requirements in VFR flight rules are met? According to the company, the slower circulation speed reduces energy consumption by 75%. This control board is out of a variable speed furnace with a modulating gas valve that has a variable speed inducer motor.