how to change fan speed on a trane furnace

I'm not completely convinced on this, since the claim is made by a company that sells variable speed blowers for retrofitting HVAC systems. The furnace operates for two minutes or so before it shuts down. How to Change Air Handler Fan Speed | Hunker Select your preferred wire with the warm temperature and connect it to the 'heat' port. New XV80 Trane furnace makes noise when blower runs at low speed. thanks in advance. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. There are several tutorials on Youtube about how to do this step for specific inducer motor brands. In support of this: I found the mfr owner's manual for my furnace and in it, it states, "if you have an air-conditioning coil installed, you should switch the furnace blower speed to high to accommodate the decreased air-flow caused by the cooling coil in the plenum.". Here's hoping for some good answers. Trane XV90 - circulator motor removal - DoItYourself.com 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. 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. On my furnace the schematic showed there were three speed settings. To begin, turn off the power to your furnace. PDF Setting Blower Speeds - Ferguson HVAC Variable Speed Blower Motor (Genteq ECM 3.0, 4 pin connector). On most control boards there will be a jumper that is marked to show that it controls the speed. Trane 2-stage Heat and AC - proper wiring of Thermostat? : r/HVAC - reddit The gas is shut off and the induction motor stops running while the blower . At night with an even lower set point I switch the fan speed to automatic. These blower motor versions can be found in furnaces, air handlers, and packaged units. 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. I got the sv96 100k btu 2stage furnace with variable fan and the xl18 4ton ac unit. 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.. The gas kicks on and is lit by the ignitor. Now, I haven't done the measurement to learn how much electricity my blower uses on low vs high. - Answered by a verified HVAC Technician . 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. Once you cut the power, you can remove the cover of your furnace to get access to the control board. During the awake hours I Hold the fan speed at either low or medium. These connected to (park) terminals, which are not used and simply hold those two additional wire speeds. . -The "AC/HP CFM Adjust" is the airflow volume to be set for system, efficiency, comfort. Most residential furnaces were installed by the low bidder. Oil Furnaces may have a temp rise of 50-60F. The installation instructions for this furnace are needed in order to be able to know how to set these dip switches. So How Do We Adjust Fan Speed? I am currently heavily invested in studying and learning the subject as I commit myself to reducing my winter energy costs this year. Here's the sequence: Furnace gets call for heat. I think that when it is in enhanced mode the fan only runs at 50%, you can try changing your dip switches to see. The most important factor is temperature differential - the difference between the inside temperature and outside temperature. Turn off the emergency HVAC shutoff switch Remove top and bottom cover panels on the air handler / furnace unit (fig.5.1). Trane. How To Adjust The Fan Speed On A Furnace? - HVACseer.com 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. The fan speed is controlled on the control board for the furnace. Test the new speed. 3 of the wires will likely terminate with just a twist on cap. You will need to find the main cover panel on your fan. you will get the better dehumidification with the lower setting. Divide the rated Btu input by 10,000. Switch the power back on and test it. I guess you are talking about a 3 speed direct drive motor with 1/2 shaft. A dirty air filter can cause your HVAC system to go into overdrive and result in costly energy bills. How to Replace a Trane Blower Motor - Part 1 - AllThumbsDIY.com Warmup.com mentions that it was the original design of radiant floor heat systems by the Romans. Variable Speed units continuously communicate with each other and your Trane thermostat to provide optimal efficiency. Your AC or furnace is designed for a specific type of filter. I.e., maybe more heat is now escaping through the exhaust. Step 2: Remove the panel cover of the furnace. In order to measure air flow you could use a flow capture hood, a rotating vane anemometer, or a hot wire anemometer. 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. This can be done through an independent dehumidistat or through a thermostat's DEHUM terminal (if available). According to the company, the slower circulation speed reduces energy consumption by 75%. We have a Trane XL80 furnace manual in pdf version that you can download for free. variable speed trane blower motor - DIY Home Improvement Forum A 1.5 ton AC unit may not be large enough to cool the . The automatic feature rarely kicks in once at set point. Identify those arcade games from a 1983 Brazilian music video. 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. Soak the filter in warm water in a bathtub or sink. HVAC Fan Speed Too High - What To Do? - HVACseer.com So if you are actually moving 1250 CFM then you are at 357 CFM/ton, which is a good setup for dehumidifying. Top Ten Interview Tips to Land that HVAC/R Job! 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. American Standard air handler troubleshooting Sometimes you have to add more ducts to achieve the proper pressure and velocity. The wire's color will determine the speed settings that the motor will run at. Why is there a voltage on my HDMI and coaxial cables? Proper returns are rarely a thought. *Based on third party testing of particle removal efficiency down to 0.3 microns (2005). Control Humidity by Optimizing Fan Speed | Priority Energy Another common place with a schematic is on the back of the blower fan door. I needed to go the opposite direction and increase fan speed. There is no humidistat. Of course all that heat was lost because of the ridiculous number of vents in our foundation. the module must be a trane furnace model specific programmed and is available separate from the motor. 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. Tied from R to BK in air handler. 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). Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace? Bundle Packs are a great way to save and get faster shipping! Stage 3 Aux Heating. 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. 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. Connect the ohm meter to the pressure switch. 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. Trane XR95 - how to adjust fan speed? - DIY Home Improvement Forum Connect with our Customer Care team about your products, warranties, and dealer concerns. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. XB Trane Furnace: Is there a fan speed control on the unit. If you are having problems, find your fans users manual and use it as a guide. The constant air turn over at a lower set point keeps the house comfortable. I can unsubscribe and opt-out from future communications at any time. Switched it to heat (in which case the furnace board is in control of the fan, not the stat) - got fire, no fan. The A/C will run according to the thermostat settings. Bus Driver/Substitute Teacher Remove both of these wires and wire nut them together. Craig is a licensed Teacher of HVACR, Sheet Metal, and Building Maintenance in the State of New Jersey of the USA. We have been heating the crawl space in our house for several winters because the ductwork was all torn up from rats. Thanks for contributing an answer to Home Improvement Stack Exchange! Questions of a Do It Yourself nature should be submitted to our "DoItYourself.com Community Forums". How to adjust the fan speed and the new Trane furnaces model - YouTube The blower/fan seems to be running way to fast. In other units, it may be 2, 3, and 4 that are programmed. 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 pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. (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. It had been set on the higher speed, but that was too harsh, so I lowered it to the slower speed. 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. If the blower motor hums, check the blower fan to ensure that it spins freely. To learn more, see our tips on writing great answers. 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. This will help prevent injury and damage to the furnace fan. During "Fan On", the fan runs at 50% of whatever the maximum speed of the fan is. charts are usually found on the air handler inside door to controls. Then switch the jumper to your desired speed. ASE Certified Master Auto Technician There are often five wire colors coming from your blower to your IFC. The blower energy draw at a lower speed will be offset by the loss in fan wheel inertia. Your OP was a noise complaint. #3. 4TEE3C10A1 That is excessivly loud. Trane s9v2 should thermostat control blower speed? Access the control board. So I continued to play around with different combinations tonight. We recommend our users to update the browser. 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. I'll just run the heat pump through the leaky ductwork and heat the crawl space. Asking for help, clarification, or responding to other answers. That will give you the most reliable results for your particular system. Narrowing that hysteresis loop will: Leading to a smaller Hysteresis loop, increasing motor efficiency by reducing iron eddy current losses. 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. To help ensure you're breathing healthier air and supporting your heating and cooling system to operate at an optimal level, follow the simple steps in this video to change your furnace filter assuggested. When it is flashing fast there is heat throughout your home. Copyright 1995-document.write(new Date().getFullYear()) MH Sub I, LLC dba Internet Brands. 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. Invention prototypes are another of his many accomplishments. Locate your thermostat on the page and click System Mode. Heat exchange takes time. XV18 TruComfort Variable Speed Air Conditioner - Trane Residential submitted to our "DoItYourself.com Community Forums". Therefore for anybody thinking to adjust their blower speed to a low setting be mindful and use caution and listen carefully as to how the system is running. You have to switch the wires to the blower motor. When you open the panel, it kills the power to the furnace. You can verify the actual CFM by measuring the TESP of the system and comparing it to the manufacturer's airflow data sheet. Check back regularly as we are always updating and improving thiswebsite! How to change blower speed on furnace - Trane XB 2018 You may freely link to this site, and use it for non-commercial use subject to our terms of use. 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. What sort of strategies would a medieval military use against a fantasy giant? 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. For business related inquires email us at info@acservicetech.com. If you do, you may not have enough air flow over the heat exchanger, resulting in overheating and eventually a shorter exchanger life span. Each is associated with a different blower speed. This means that any time cooling is called for by the control board, 24v will be present on the #4 terminal of the motor module to turn the motor on and to run at roughly 1200 CFM. Another key difference is that the circulate . Connect the common wire to the neutral terminal of the furnace's control board. Should I upgrade to a pcm br compatible thermostat? Again, this can usually be found in the upper-left corner. Why is my furnace blower running at low speed? Does lowering the blower speed of a forced-air furnace lower its efficiency? Available from Trane Dealers in select locations. Recently I did a blower speed adjustment on the 2nd floor air handler and thought to show how it can be done. 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. Air Filter - Be sure to check the air filter and replace if necessary. Trane XR80 Troubleshooting After examining the flashing system you should check the green light speed. I miscalculated. The boiler is feeding a DHW sidearm and furnace plenum HX. I have a Trane XV90 propane furnace with a variable speed blower. 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. Blower on delay settings, which evidently have an impact on the duration and speed of the blower fan. Stage 2 Aux Heating. Changing the Blower Speed on a Furnace - YouTube Remove both of these wires and wire nut them together. Making statements based on opinion; back them up with references or personal experience. Changing the fan wire connection between the fan-on relay and the fan motor, selecting a high, medium, or low speed right on the fan motor itself Changing jumper positions on the control board (printed circuit board shown below) in the air handler Changing a dip switch or small slider switch position provided on some air handler control boards Air filters are measured by Minimum Efficiency Reporting Values (MERV). 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. It offers three settings: 525 RPM for saving energy, 900 RPM for heating, or 1100 RPM for air conditioning. 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. The S8X1 blower has 9 speeds. Luci is a contributing writer for DoItYourself.com. This will help prevent injury and. 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. Typical setups include these wire colors with associated blower speeds. Usually there will be three speeds ranging from 40 to 100% of airflow. 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. He has been DIY since childhood and is now a septuagenarian. In a gas furnace, (the most common type of furnace used in homes) natural gas is ignited in the burner and the flames heat up the heat exchanger. If the blower motor is burned out, replace it. Learn more about Stack Overflow the company, and our products. 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). How can I check before my flight that the cloud separation requirements in VFR flight rules are met? Proper Fan Speed Setting During Heating Mode 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. I'd go with logging temperature differential (inside temp - outside temp) vs. energy consumption every day for a month with the blower on high and then for a month with the blower on low. If the terminals are present at the motor module (ECM X-13) you can switch speeds at the blower motor location. For this reason, pair your Variable Speed AC unit with one of the following components: Hyperion TAM9 Air Handler, XC 80 Gas Furnace, XC 95M Furnace, or S9V2. Design Engineer/Project Manager for injection molded plastic company Cookie Notice Click On under Emergency Heat. When the humidity is high for what its set at. Copyright There are also red and brown furnace speed wires. 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. Goodman Furnace Blower Speed Adjustment - Daily Heating and Air 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. But I guess my question is, can the air flow problem really be a simple as upping the blower speed? Run a jumper from "R" to "Y2" and the blower will run continuously at the second-stage cooling speed. To understand how this works, let's look at the wiring on your furnace's blower. Step 3: Find the furnace draft inducer. To switch the jumper, you will need to hold onto it gently as you pull it out of its current setting. Press Apply to save and exit. video below! Shay Tilander is a senior editor at Family Handyman. Does lowering the blower speed of a forced-air furnace lower its These are not switched off but are live all the time. Can you increase the speed of an ECM AC blower? On this control board, there are multiple adjustments for the airflow speeds. My first thought was that the unit was oversized, but I figured out how to check the DIP switch settings. http://www.inspectorsjournal.com/Forum/topic.asp?TOPIC_ID=8998&, We've added a "Necessary cookies only" option to the cookie consent popup. *NOTE* If you attempt this, be absolutely sure that you have no power going to your system, especially before changing wires. The only alternative is to raise the discharge temperature. The system might not work properly. The blower fan on this blower has four speeds. Each is associated with a different blower speed. If a clear distinction between the blower speeds isn't obvious in the data, then you're probably not going to save much money either way, so go with what's most comfortable for you. It allows three constant fan speeds as well as an automatic fan speed and a variable burn rate and compressor and fan speed. The ohm meter should read very close to zero. Yes--the efficiency of the heat exchanger will decrease. 3.5 x 400 = 1400 CFM. Use tab to navigate through the menu items. This covers speed adjustment on a PSC motor. A MERV rating speaks to the filters ability to capture large particles. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Variable speed blower control - HVAC-Talk: Heating, Air & Refrigeration To clean a reusable filter, remove the filter from the air cleaning device. If you really wanted to be scientific, you could perform an experiment and post the results here. In terms of heat pumps, running the external blower faster may reduce i2r copper losses and hysteresis iron eddy current losses. A 90 percent-plus furnace needs 150 cfm per 10,000 Btu of input. You need to follow the wiring diagram inside the HVAC unit. Remove the motor and mounting bracket. Typically the colors are: White = neutral speed Red = low speed Yellow = medium speed Black = high speed The NET difference of the above two figures is your savings or cost. Trane s9v2 should thermostat control blower speed? - HVAC-Talk: Heating Step 3: Adjust the Pulley on the Blower Drive Motor However, they are limited based on the total external static pressure (TESP) in the duct. How to Replace a Trane Blower Motor - Part 2 - AllThumbsDIY.com Trane S8X1 single stage - Continuous Fan speed adjustable? I was reading the Trane XL824 thermostat installation and setup manual. Trane XL80 Furnace Manual - PDF - Daily Heating and Air Conditioning That said the contractor has no real incentive to get it right. Enabling and Disabling Emergency Heat - Trane Home

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