The manometer tells you the CFM number. These blower motor versions can be found in furnaces, air handlers, and packaged units. So clearly, running your furnace blower on low is only more efficient IF-and-ONLY-IF the cost of the heating fuel is much much less then the cost of the electricity to run the blower that little bit faster. Second-stage auxiliary heating for heat pumps and multi-stage furnaces. He farmed commercial garden produce for several years. Follow us on Facebook for Quick Tips and Updates here! According to the manufacturer's documentation, your furnace should have a 3 or 4 speed blower motor. Compatible with Trane systems or any standard HVAC system. Options are, for example, 4 minutes at 80%, or 30 seconds at 50%. -The BTU/HR size is selectable between 48,000 42,000 36,000 or 30,000 BTU/HR. Because the slower air velocity over the heat element is transferring fewer BTU units into the circulated air and they simply go up the exhaust pipe. Slowing the blower speed reduced the noise but I take it you would still like it to be more silent. 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). *Based on third party testing of particle removal efficiency down to 0.3 microns (2005). Here's the sequence: Furnace gets call for heat. Trane 2-stage Heat and AC - proper wiring of Thermostat? : r/HVAC - reddit To clean a reusable filter, remove the filter from the air cleaning device. The best answers are voted up and rise to the top, Not the answer you're looking for? If you want to learn about refrigerants and how they work in a system, check out our Refrigerant Charging and Service Procedures for Air Conditioning book . The wire's color will determine the speed settings that the motor will run at. If you really wanted to be scientific, you could perform an experiment and post the results here. You will need to find the main cover panel on your fan. The airflow adjustments on this board are pictured below. I miscalculated. If you have any questions or need assistance, please contact Trane Home Customer Support via email at help@tranehome.com or call 1-877-288-7707, Monday-Friday 9 . The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. I'm getting a new s9v2. 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. The arrow should point toward the unit. Press Apply to save and exit. Western VA. Nov 28, 2009. How to Fix a Pressure Switch Error on a Trane | Hunker Identify those arcade games from a 1983 Brazilian music video. 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. 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. Available from Trane Dealers in select locations. 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). . Allow the filter to completely dry before returning it to the device. But, in looking up the manual for this furnace (TUD1B100A9361), it looks like there are 4 blower speeds. If the Delta T continues to rise, this is due to low indoor airflow. Adjusting the Airflow Speed on ECM Blower Fan Motors! Solution: Install a new sequencer AND a new fan relay, just to be safe. If the pressure switch is functioning properly . You may freely link to this site, and use it for non-commercial use subject to our terms of use. 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. All rights reserved. The ohm meter should read very close to zero. and our Can you increase the speed of an ECM AC blower? homininet 8 mo. What is the result of a higher blower speed? - Houzz -The "AC/HP CFM Adjust" is the airflow volume to be set for system, efficiency, comfort. All rights reserved. How To Adjust The Fan Speed On A Furnace? - HVACseer.com Making statements based on opinion; back them up with references or personal experience. (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. Trane variable speed air handler setting - Houzz Remove both of these wires and wire nut them together. Make sure power is off when doing any adjustment. However, I like the continually run the fan to even out air temperature in the house. 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. Air Handler Blower Fan Speed - InspectAPedia The automatic feature rarely kicks in once at set point. 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. Thanks for the reply. These connected to (park) terminals, which are not used and simply hold those two additional wire speeds. Standard blower motors operate at a single speed and cost around $450 to replace, including parts and labor, while variable-speed motors cost $600 and up. At night with an even lower set point I switch the fan speed to automatic. DoItYourself.com, founded in 1995, is the leading independent home improvement and repair website. If you have a plug instead (ECM Broad Ocean) you can only make the adjustment at the control board or at the plug terminals at the end of the wiring. 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. Learn more about Stack Overflow the company, and our products. Warmup.com mentions that it was the original design of radiant floor heat systems by the Romans. He owned and operated a manufacturing business building Compact Utility Vehicles for homeowner use. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? Inventor with two patents (weight training – anti-rollback for manual wheelchair) You should now see a red E icon in the System Mode screen next to Auto and Heating modes. The installation instructions for this furnace are needed in order to be able to know how to set these dip switches. This can be done through an independent dehumidistat or through a thermostat's DEHUM terminal (if available). Our Privacy Policy governs the use of your information. . The house cools off quick - too quick - and feels humid (not sure of the rh%). By clicking '. I hope this helps you understand how to adjust the airflow speed on ECM Blower Motors! One fan is inside the house, and one is outside the home. 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. A second filter location for most HVAC systems and furnaces is the air handler portion of the system. Measured the temperature of the air before the coil and after the coil and used DeltaT (change in temperature) to determine the blower setting. 3 of the wires will likely terminate with just a twist on cap. This trick only works on gas furnace systems with a multi-speed blower. Move the high-speed wire to low. Now that would turn the blower speed down on you. AC Fan Not Working? Reasons Why It Stopped Spinning - Trane 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. It accounts for the amount of air in circulation for precision airflow. (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. Variable Speed Blower Motor (Genteq ECM 3.0, 4 pin connector). I can unsubscribe and opt-out from future communications at any time. It allows three constant fan speeds as well as an automatic fan speed and a variable burn rate and compressor and fan speed. How to change the fan motor speed on a gas furnace - YouTube Test the new speed. Identify the blower fan and the speed wires. The gas is shut off and the induction motor stops running while the blower . Any takers? The product data guide, and label on the inside panel indicate the air . To understand how this works, lets look at the wiring on your furnaces blower. The S8X1 blower has 9 speeds. 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) Each is associated with a different blower speed. When you open the panel, it kills the power to the furnace. By pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. You need to find the wires that determine blower speed inside your furnace. Helm is an accomplished DIY craftsman. If you have suggestions or comments they are welcome. Well, it does make sense that lowering the blower speed would reduce its electrical consumption. 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. Does lowering the blower speed of a forced-air furnace lower its Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace? Remove the air handler. On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. Website operating Step 3. This furnace features the common White-Rodgers Intell-Ignition circuit board. This will allow you to access the control board. If power is getting to the blower motor, but the motor does not run, the motor may be burned out. Upon initial installation, these dip switches need to be adjusted for the particular unit, size, and application. Variable Speed Furnaces | Everything You Need to Know | HVAC.com Example: Rated Btu Input = 60,000 / 10,000 = 6 x 150 = 900 cfm of required furnace airflow. I am currently heavily invested in studying and learning the subject as I commit myself to reducing my winter energy costs this year. When the R-G circuit is made, the blower motor operates on heating speed. How exactly could I test this? To switch the jumper, you will need to hold onto it gently as you pull it out of its current setting. These blower motor speeds are programmed at the manufacturer's factory for the specific equipment model number unit it is installed in. Ilook forward to responding to many more! Blower on delay settings, which evidently have an impact on the duration and speed of the blower fan. Proper Fan Speed Setting During Heating Mode 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. Carefully disconnect the wires from the coolant terminal, which is located on the back of the unit. All information is provided "AS IS." I think that when it is in enhanced mode the fan only runs at 50%, you can try changing your dip switches to see. Cross country truck driver -- over dimensional freight Connect with our Customer Care team about your products, warranties, and dealer concerns. I'd like to get some second opinions. Your AC or furnace is designed for a specific type of filter. R and BK are tied together. with a wiring harness for the fan. 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. 'Fan On' Speed for Trane AH - DoItYourself.com Community Forums Does a summoned creature play immediately after being summoned by a ready action? The SW2 indicates the air conditioning size. to this site, and use it for non-commercial use subject to our terms of use. Trane XL80 blower motor part number? - DIY Home Improvement Forum Divide the rated Btu input by 10,000. - The "Continuous Fan" refers to when the G terminal is powered for the fan only to run. 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!" Should I upgrade to a pcm br compatible thermostat? For example, on a package unit, only taps 3, 4 and 5 may be programmed. Slowly flashing shows your furnace is on and does not need heat. To learn more, see our tips on writing great answers. I'll just run the heat pump through the leaky ductwork and heat the crawl space. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. These three are connected to the "Cool", "Heat", and "Fan" terminals on the control board. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. I installed a Thermo Control 2000 boiler and first fired it up this Friday. You can change the settings for cfm fan speed, but you have to do it manually at the board. How to change "Fan On" speed on a variable speed blower Know your limits. For 240v units, both the L and N are hots. 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. The installation guide clearly describes how to set airflow for heating mode and cooling mode. The continuous fan is marked SW3. Questions of a Do It Yourself nature should be Switch the power back on and test it. Step 3: Find the furnace draft inducer. Air filters should be changed every 90 days unless otherwise indicated on the packaging or by the manufacturer. He is also an HVACR Contracting Business owner of 16 years and holds an NJ HVACR Master License. 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. The problem is, the furnace control module doesn't use a separate speed when the unit is running in continuous FAN mode. 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. New XV80 Trane furnace makes noise when blower runs at low - JustAnswer Available Monday Friday from 8am to 6pm CST, We use cookies to enhance your experience on our website. Variable Speed units continuously communicate with each other and your Trane thermostat to provide optimal efficiency. To begin, turn off the power to your furnace. 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. Employment/Education Highlights bean. charts are usually found on the air handler inside door to controls. BarnArtist, locate the wiring schematic on your furnace. Top 10 Spots! When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. The fan speed is very low when not heating/cooling. http://www.inspectorsjournal.com/Forum/topic.asp?TOPIC_ID=8998&, We've added a "Necessary cookies only" option to the cookie consent popup. There are several tutorials on Youtube about how to do this step for specific inducer motor brands. (Trust me, the worst thing that happens to me on the job is having inconclusive results due to insufficient data collection during an expensive and time-intensive study.) The MERV scale rates filters from 1 to 16. 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. 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. Running your furnace fan all the time isn't exactly a bad thing. I'm not completely convinced on this, since the claim is made by a company that sells variable speed blowers for retrofitting HVAC systems. He is committed to outdoor cooking in a Bar-B-Q pit he welded together several years ago. On this control board, there are multiple adjustments for the airflow speeds. Narrowing that hysteresis loop will: Leading to a smaller Hysteresis loop, increasing motor efficiency by reducing iron eddy current losses. 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. I connected a second thermostat to the circuit board to run the blower (R to G). So if you are actually moving 1250 CFM then you are at 357 CFM/ton, which is a good setup for dehumidifying. Soak the filter in warm water in a bathtub or sink. I just moved into a house with a Trane XR80 furnace (several years old). The constant air turn over at a lower set point keeps the house comfortable. We recommend our users to update the browser. Here's hoping for some good answers. Which thermostat wires control the furnace fan? The blower fan on this blower has four speeds. They do this by coupling a sophisticated, programmable thermostat to a variable-speed motor. Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? Connect the black wire to the manometer. This is done so that the maximum amount of heat is gained in the building from the refrigerant. Run a jumper from "R" to "Y2" and the blower will run continuously at the second-stage cooling speed. If the control board is at fault, replace it. *NOTE* If you attempt this, be absolutely sure that you have no power going to your system, especially before changing wires. For business related inquires email us at info@acservicetech.com. Use tab to navigate through the menu items. On this motor module, the speed wires are red, orange, blue, yellow, and black. If the ohm meter comes back with an open line reading, the switch is bad and needs replaced. 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. It only takes a minute to sign up. I got the sv96 100k btu 2stage furnace with variable fan and the xl18 4ton ac unit. Again, this can usually be found in the upper-left corner. Yes--the efficiency of the heat exchanger will decrease. You have to switch the wires to the blower motor. If you know what you are doing, it is very simple to adjust the speed of your furnace fan. We have a Trane XL80 furnace manual in pdf version that you can download for free. Trane XR95 - how to adjust fan speed? - DIY Home Improvement Forum Are there downsides to this. 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 system might not work properly. ECM Multi-Speed Blower Motor (Genteq X-13). The blower is set for 400 cfm for a 4 ton outdoor unit, and comfort-R is not enabled (all factory). The heat exchanger warms up the incoming air and a blower or air handler sends the warm air throughout the home. (Heat transfer wasn't one of my favorite classes in college - I focused more on dynamic systems, sorry.). No: you will not save on gas/oil costs by running your blower on low. Additionally, they can be identified by the presence of a removable module/bell on the end of the motor. Usually, gas furnaces have a temp rise of 50F. How To Troubleshoot A Trane Furnace | American Home Water & Air Locate the speed wires. enjoys making jams and jellies during fruit season along with cooking meals. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. We are no longer supporting IE (Internet Explorer). My main questions are. Boost Your Furnace Output With This Simple Trick Related: a two stage furnace works by actually shooting less gas out, which might improve its efficiency. Third-stage auxiliary heating for heat pumps and multi-stage furnaces. Trane Furnace blower runs all the time - Repair Clinic We have been heating the crawl space in our house for several winters because the ductwork was all torn up from rats. This helps the XR80 conserve more of the heat it produces. 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. 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 If the blower motor is burned out, replace it. 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. That will give you the most reliable results for your particular system. One of these wires will be coming from the thermostat and the other will go to the outside unit. That is incorrect. A MERV rating speaks to the filters ability to capture large particles. 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. Select your preferred wire with the warm temperature and connect it to the 'heat' port. All information is provided "AS IS." Furnace fan air speed-I need a way to slow it down This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". Fortunately, theres a simple fix if you look at your furnaces Integrated Furnace Control (IFC) board. How To Adjust Blower Speed on a Furnace | Enerny Diagnostics Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. How to use Slater Type Orbitals as a basis functions in matrix method correctly? My first thought was that the unit was oversized, but I figured out how to check the DIP switch settings. A continuous green light means the IFC circuit board needs replacing. Being an bms/controls guy I rarely have enough cfm in large buildings. Furnace Inducer Motor Making Noise? (Possible Causes & Fixes) 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. Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. 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. Air flow - American Standard | Air Conditioning and Heating | HVAC 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). How to adjust the fan speed and the new Trane furnaces model - YouTube Questions of a Do It Yourself nature should be submitted to our "DoItYourself.com Community Forums". Connect and share knowledge within a single location that is structured and easy to search. 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. How to Lower the Ouptut of Oversized Furnace. hvac - Why is my furnace blower running at low speed? - Home There is another way to wire this, but I can not find it back.. You may freely link -The "System Type" is the CFM per ton to be adjusted between low, normal and high. Turn off the power source that is connected to the furnace blower. CFM stands for "cubic feet per minute." Continue reading to learn how to lower the fan speed. Air Filter - Be sure to check the air filter and replace if necessary. 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. AC Service Tech HVAC Training is made possible by continued support from our visitors, customers, and support from these Sponsors! Yes you can change it, how to do it is in the manual, yes there can be downsides, no it probably won't fix your air balancing issues. When it is flashing fast there is heat throughout your home. 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. Trane s9v2 should thermostat control blower speed? - HVAC-Talk: Heating Goodman Furnace Blower Speed Adjustment - Daily Heating and Air