how to change fan speed on a trane furnace

This is done so that the maximum amount of heat is gained in the building from the refrigerant. Mine has a wall switch. 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. thanks in advance. After understanding what speed each tap is programmed for, we can make proper airflow adjustments. Cockroaches and waterbugs coming in through the vents was my big clue there. Access the control board. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. XB Trane Furnace: Is there a fan speed control on the unit. The automatic feature rarely kicks in once at set point. It is important to know that you cant go by a normal color code to determine the speeds. The following list refers to each adjustment starting from the bottom and moving upward. Press Apply to save and exit. -The "Blower-on and Blower-off delay" time period can be selected. Yes, there is a way to bring up the speed on the air handler.. He farmed commercial garden produce for several years. During the awake hours I Hold the fan speed at either low or medium. This will allow you to access the control board. Recently I did a blower speed adjustment on the 2nd floor air handler and thought to show how it can be done. 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. This BTU/HR capacity should be used to set the CFM for the indoor blower motor. How can I check before my flight that the cloud separation requirements in VFR flight rules are met? Which thermostat wires control the furnace fan? 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 It would have no affect on the Heat settings. 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. 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. Top Ten Interview Tips to Land that HVAC/R Job! You may freely link Check back regularly as we are always updating and improving thiswebsite! 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. Change the speed. -The "AC/HP CFM Adjust" is the airflow volume to be set for system, efficiency, comfort. The same is true when changing the air duct filter. Third-stage auxiliary heating for heat pumps and multi-stage furnaces. Example: Rated Btu Input = 60,000 / 10,000 = 6 x 150 = 900 cfm of required furnace airflow. At night with an . I have a Trane XV90 propane furnace with a variable speed blower. 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. He is experienced in wood and metal construction, having designed and built several houses and metal buildings. 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. I.e., maybe more heat is now escaping through the exhaust. Can you increase the speed of an ECM AC blower? 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. (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 offers three settings: 525 RPM for saving energy, 900 RPM for heating, or 1100 RPM for air conditioning. enjoys making jams and jellies during fruit season along with cooking meals. If there isnt one in your home, turn it off at the breaker box. Sometimes less cmf will give the air more time in the heat exchanger thus letting it get hotter. 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. allows the furnace's circulator blower to operate at a slightly lower speed (85% of desired speed) during a combined thermostat call for cooling and dehumidistat call for dehumidification. Then switch the jumper to your desired speed. This will help prevent injury and. problems contact webmaster@doityourself.com. View our Privacy Policy here. 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. This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". By clicking '. If it goes out of spec then on "very cold days" (when the furnace runs a lot) it could trigger an automatic shut off when the exchanger doesn't end up getting cooled enough, FWIW. Mine. 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. Thanks for all your continued support! When you open the panel, it kills the power to the furnace. 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. However, I like the continually run the fan to even out air temperature in the house. So if you are actually moving 1250 CFM then you are at 357 CFM/ton, which is a good setup for dehumidifying. Thanks for the reply. Note: (High voltage is always going to your blower motor along with the common for the 24 volts. Compatible with Trane systems or any standard HVAC system. Tools that we use: www.amazon.com/shop/acservicetech. The best answers are voted up and rise to the top, Not the answer you're looking for? The heat exchanger warms up the incoming air and a blower or air handler sends the warm air throughout the home. Remove two screws from each bracket leg holding the motor. Put the air handler back. 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. For business related inquires email us at. For business related inquires email us at info@acservicetech.com. Second-stage auxiliary heating for heat pumps and multi-stage furnaces. The gas kicks on and is lit by the ignitor. Id check that out first. DoItYourself.com, founded in 1995, is the leading independent 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. 80% would be great for me. The constant torque/multispeed motor will have the smallest module. 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. I recently had have a trane xl 90 want to adjust speed of blower fan blower motor has 4 wires white going to neutral black unhooked blue to high speed yellow to I have a Trane Indoor Air Handler Model No. I think that when it is in enhanced mode the fan only runs at 50%, you can try changing your dip switches to see. A second filter location for most HVAC systems and furnaces is the air handler portion of the system. One of these wires will be coming from the thermostat and the other will go to the outside unit. If you have not read that yet, I would encourage you to do so! The induction motor begins running. 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. Wires from the 16 pin plug are connected to this board. 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). The low pitched whine stops when fan is in high speed. You will need to find the main cover panel on your fan. 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. If the blower motor hums, check the blower fan to ensure that it spins freely. On my furnace the schematic showed there were three speed settings. The air handler houses the fan and fan motor and is usually located in the basement or attic. Inventor with two patents (weight training – anti-rollback for manual wheelchair) I want to increase volume flow if possible. Comfort R should be off if you are using . According to the company, the slower circulation speed reduces energy consumption by 75%. Western VA. Nov 28, 2009. By pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. If you have suggestions or comments they are welcome. For more information, please see our When the humidity is high for what its set at. Yes--the efficiency of the heat exchanger will decrease. So I continued to play around with different combinations tonight. There are often five wire colors coming from your blower to your IFC. Note also that there is always just "one blower" but that blower may or may not be variable speed, etc. Step 2: Remove the panel cover of the furnace. We have a Trane XL80 furnace manual in pdf version that you can download for free. My question was whether the efficiency of heat transfer thru the exchanger would be somewhat compromised due to the reduced airflow. Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. Thanks for contributing an answer to Home Improvement Stack Exchange! If you know what you are doing, it is very simple to adjust the speed of your furnace fan. If the pressure switch is functioning properly . I'm getting a new s9v2. The company offers a variety of furnaces to suits the needs of every home. Website operating http://www.inspectorsjournal.com/Forum/topic.asp?TOPIC_ID=8998&, We've added a "Necessary cookies only" option to the cookie consent popup. Additionally, they can be identified by the presence of a removable module/bell on the end of the motor. . Variable Speed units continuously communicate with each other and your Trane thermostat to provide optimal efficiency. Air filters are measured by Minimum Efficiency Reporting Values (MERV). HVAC system for small church has twin Trane XR90 units installed in 2009 to replace a unit with a much larger single blower. Bus Driver/Substitute Teacher One of these wires will be coming from the thermostat and the other will go to the outside unit. (Variable & Multi-Speed Types), In this HVAC training article, we will be discussing how to adjust the fan speeds on an indoor, In order to measure air flow you could use a flow capture hood, a rotating vane anemometer, or a, I hope this helps you understand how to adjust the airflow speed on ECM Blower Motors! Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace? The airflow adjustments on this board are pictured below. BarnArtist, locate the wiring schematic on your furnace. To start, ECM stands for Electronically Commutated Motor which means that the motor is capable of electronically controlling it's own speed, and therefore CFM, according to the desired output.

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