I know I need to replace a dying blower motor in a 1992 Trane XL80 gas furnace. The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. To learn more, see our tips on writing great answers. Only 3 of the 5 colored wires may be used at a time. Here's the sequence: Furnace gets call for heat. This will increase the number. My first thought was that the unit was oversized, but I figured out how to check the DIP switch settings. Its a common occurrence in the heat of the summer or the cold of the winter one room doesnt get as warm or as cool as the others. Another common place with a schematic is on the back of the blower fan door. There is no humidistat. According to the company, the slower circulation speed reduces energy consumption by 75%. My main questions are. Upon initial installation, these dip switches need to be adjusted for the particular unit, size, and application. 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. It provides quieter and more even and comfortable heat than a conventional furnace and doesnt consume electricity unnecessarily. Thus, my blower can't be using that much electricity on high. Does a summoned creature play immediately after being summoned by a ready action? The S8X1 blower has 9 speeds. The blower fan on this blower has four speeds. I miscalculated. I found one glued to the back of my furnace door, one in the manual, and maybe one on-line too. ASE Certified Master Auto Technician -The BTU/HR size is selectable between 48,000 42,000 36,000 or 30,000 BTU/HR. I needed to go the opposite direction and increase fan speed. rev2023.3.3.43278. He owned and operated a manufacturing business building Compact Utility Vehicles for homeowner use. Mutually exclusive execution using std::atomic? Sign up for our email newsletter to learn helpful HVAC tips and tricks before your purchase your system. 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. Making statements based on opinion; back them up with references or personal experience. Measured the temperature of the air before the coil and after the coil and used DeltaT (change in temperature) to determine the blower setting. (Without enclosing my house in a climate-controlled bubble). For example, on a package unit, only taps 3, 4 and 5 may be programmed. A MERV rating speaks to the filters ability to capture large particles. 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. If the furnace manufacturer supplies different burners for that unit you may be risking premature failure. 1995-2023 MH Sub I, LLC dba Internet Brands. 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. Remove the air handler. I want to do what is best. - The "Continuous Fan" refers to when the G terminal is powered for the fan only to run. 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. air flow is inadequate to match demand and duct size. 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. I am just clueless, could it be the thermostat (really old) or something that is going to cost a billion dollars to fix? Air Filters remove dust, lint, pet dander, and other pollutants so you can breathe easier knowing your indoor air quality is better with Trane. I have another question about my new Trane XV95 Furnace. These are not switched off but are live all the time. You have to switch the wires to the blower motor. 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. The airflow adjustments on this board are pictured below. -The "System Type" is the CFM per ton to be adjusted between low, normal and high. 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. But you will have a tough time measuring either on your basement Trane. This will cause the "Cool" terminal on the control board to be connected to to the #4 terminal on the motor module via the black wire. 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. Connect the black wire to the manometer. Can you increase the speed of an ECM AC blower? The arrow should face the direction the air is flowing. Air Filter - Be sure to check the air filter and replace if necessary. With heating oil at $4.50/gal I can assure you without measuring anything that running my blower on low is NOT more efficient from a $$ perspective. According to the manufacturer's documentation, your furnace should have a 3 or 4 speed blower motor. It is a Trane S8X1 single stage furnace and air handler, paired with an XR16 3 ton AC unit. Radiant floor heat web sites are mysteriously silent on this simple and cheap modification of pre-exisiting systems to accomplish the same goal. lower efficiency furnace) it is drafting exhaust up the flue which can't be good. Variable Speed units continuously communicate with each other and your Trane thermostat to provide optimal efficiency. 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. Most of these are on the bottom left of the control board. Electric Furnace Sequencer Replacement Instructions for Home Repair Blower fan will not run: A failing sequencer may have a burnt contact and is unable to switch the fan and heating coils ON. He also builds custom tools for metal working. 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. Possibly you could do the same here (turn down blower and gas). one room doesnt get as warm or as cool as the others. 1 to 1.5 hours | Install the new motor, adjust it (multispeed and variable speed blowers only), run and test the furnace Installing a blower wheel with the motor shouldn't affect installation time, since the old wheel typically has to be removed to replace the motor. 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. Trane s9v2 should thermostat control blower speed? A dirty air filter can cause your HVAC system to go into overdrive and result in costly energy bills. 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. How to tell which packages are held back due to phased updates, Linear Algebra - Linear transformation question. thanks in advance. Turn off power at the main electric panel. Narrowing that hysteresis loop will: Leading to a smaller Hysteresis loop, increasing motor efficiency by reducing iron eddy current losses. you will get the better dehumidification with the lower setting. On most control boards there will be a jumper that is marked to show that it controls the speed. All rights reserved. I understand the reason for slowing the air to remove humidity. This is NOT a user servicable item. Switch the power back on and test it. HVAC filters help remove dust, dander, and harmful particles from the air inside your home. On this board, pins 3, 4, and 5 on the SW1/1 through SW1/8 dip switch block have to do with air flow. Craig creates educational HVACR articles and videos which are posted at https://www.acservicetech.com & https://www.youtube.com/acservicetechchannel & https://www.facebook.com/acservicetech/. The air handler houses the fan and fan motor and is usually located in the basement or attic. (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. 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 noise is there in heat or AC. I'm also going to go through and make sure there are no visible leaks or damage to them. 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. Step 3. Air filters should be changed every 90 days unless otherwise indicated on the packaging or by the manufacturer. If the control board is at fault, replace it. Turn off the emergency HVAC shutoff switch Remove top and bottom cover panels on the air handler / furnace unit (fig.5.1). Heat exchange takes time. My heat is running cold! The heat exchanger warms up the incoming air and a blower or air handler sends the warm air throughout the home. 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. Usually there will be three speeds ranging from 40 to 100% of airflow. How do I check if this furnace switch the blower to second speed. This value is then multiplied by 150 cfm to obtain the required airflow for the furnace in heating operation. Your AC or furnace is designed for a specific type of filter. By pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. The NET difference of the above two figures is your savings or cost. The constant torque/multispeed motor will have the smallest module. Cut the wire's terminal connector off with wire cutters. Warmup.com mentions that it was the original design of radiant floor heat systems by the Romans. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. low would be 350 CFMs/ton, medium 400 CFMs/ton, high 450 CFMs/ton. suggestions. Wires from the 16 pin plug are connected to this board. 3 of the wires will likely terminate with just a twist on cap. Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. 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. Remember that CFM stands for Cubic Feet Per Minute. Why do many companies reject expired SSL certificates as bugs in bug bounties? Example: Rated Btu Input = 60,000 / 10,000 = 6 x 150 = 900 cfm of required furnace airflow. The control board has relays that regulate the voltage to each component in the furnace. If you have not read that yet, I would encourage you to do so!
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