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Finally, the common originates from the transformer and is required to power up the thermostat. In labs researchers used a spectrum of ultraviolet light called UVC to kill viruses. For instance, it usually consists of the wiring, jacks, distribution panels, and network interface device (the device the utility or ⦠Your email address will not be published. In case of three phase spa wiring, use 12 or 10 gauge wire size for each line. Perhaps one of our readers here can help you. Take each wire one at a time make a jumper to red. Sorry, without the wiring schematic for this equipment I cannot help you. *Although be aware that this may have changed, especially if the person who wired the thermostat didn’t use conventional color coding. Y Terminal is connected to the Y Wire or Yellow Wire - the yellow wire is for cooling and originates at the thermostat, runs to the air handling unit, and then to the condensing unit outside. Read this article to know more about Sensi Thermostat Compatibility with HVAC systems. Lastly, always make sure you know what type of system you have before doing any wiring. Tap Add product on the home screen and follow the app instructions. Heat pumps are different than air conditioners because a heat pump uses the process of refrigeration to heat and cool.While an air conditioner uses the process of refrigeration to only cool, the central air conditioner will usually be paired with a gas furnace, an electric furnace, or some other ⦠This category only includes cookies that ensures basic functionalities and security features of the website. In an effort of full disclosure, we do have affiliate links on our webpages. White Wire for W Terminal. Additionally, thermostat wiring colors are not standardized. Importantly, there is high voltage inside the air handler, boiler, or other equipment where the wires terminate. *Although be aware that this may have changed, especially if the person who wired the thermostat didn’t use conventional color coding. original part number LOOKS LIKE. Thermostat Wiring Diagrams Air Conditioners. These only use two wires and use a communication protocol kind of like a computer uses. *The most common color I’ve seen used for this terminal and wire designation is light blue, but this varies and is entirely up to the installer what color to use. by High Performance HVAC | Thermostats | 107 comments, Thermostat Wiring Colors Code Page Navigation. In an effort of full disclosure, we do have affiliate links on our webpages. Another diagram of thermostat wiring for two transformers. Finally, this type of wire is different from the typical thermostat wire and a separate wire altogether. This website uses cookies to improve your experience while you navigate through the website. It does not matter if you leave the jumper in the thermostat or take the jumper out if a factory jumper is installed between RH and RC provided there is no cooling for this particular system. If the thermostat has an RC terminal it is not needed for this application. An air conditioner cooling system is different than a heat pump heating and cooling system. These cookies do not store any personal information. This product requires professional installation so it will turn on and off with the blower fan in your air handler but it will offer the protection you need for you and your family from any viruses. This only for basic heat pump thermostat wiring to get the normal components working. The most common need for additional wiring when installing an ecobee comes from the lack of a C wire. You may cause a dead short in the control circuit. Yes, one Braeburn indoor or outdoor "wired" remote sensor can be connected to the S1 and S2 terminals on the thermostat You can only mix "wired" and "wireless" remote sensors if they are different types. Additionally, better home comfort along with reducing your energy costs. The next leap, which is already occurring, are communicating thermostats. Finally, if that is not possible, then trace the wire out to the source. This diagram shows what each terminal designation that goes to the HVAC system. You have a Heat Pump so you will need a heat pump thermostat. Finally, this way, you can match up the appropriate wire color coming from the thermostat to what it controls in the equipment. However, these are the most wiring methods used based on my years of experience in the HVAC field, where I successfully wired a lot of thermostats. Im just trying to replace thermostat on a cadet wall heater. At least to an expert. Use these steps to add the thermostat to the app to get the wiring diagram.. Standard Wiring Colors - or Standard Wire Color per Industry Norms, The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home. Necessary cookies are absolutely essential for the website to function properly. To wire a thermostat, you must first be aware of the type of system that you have in your home. The thermostat wiring on these systems can have very similar wiring properties. There’s really only two different types of wire schemes I have seen. However, this should be wired directly to the heating relay or the Aux terminal on a terminal stripboard. C stands for common, and there is no universal color used for this terminal, although black is the most common color I’ve seen. Thermostat Wiring Diagrams for Heat Pumps - Heat Pump Thermostat Wire Diagrams. ; Follow the app instructions. Yellow Wire for Y Terminal. The neoAir Wireless Thermostat supports Alexa, Google Home, IFTTT and HomeKit and is always getting better with our free software updates. Furthermore, it is important to find the breakers for your heating and cooling systems and turn the power off before wiring. I wouldn’t touch the hot wire with the common wire…………..that would cause a dead short and blow a transformer or a fuse for the low voltage circuit if it is so protected. But opting out of some of these cookies may have an effect on your browsing experience. The second wiring diagram showing a heat pump system. First, what thermostat wire color is likely to go to which terminal on the thermostat, Secondly, the function of each wire terminal on the average thermostat highlighting some of the differences in those functions from manufacturer to manufacturer. If you donât have other products in the app. How To Wire a Thermostat; Thermostat Wiring for Furnace Heating and Air Conditioning. If you have a two-stage heat pump, then you will also utilize terminal Y2 for the second stage. Without the O functionality, the system will not cool. This website uses cookies to improve your experience. White-Rodgers shows a slightly different type of wiring diagram that mirrors a ladder logic diagram. it’s up to the installer which one he uses. Instructions for converting baseboard heating radiant heating. There are two types of wires in thermostat which is called W wire and Y wire. This category only includes cookies that ensures basic functionalities and security features of the website. In rare cases a wire may be in the wrong thermostat connector, which can cause your system to malfunction. With the top thermostat wiring diagram showing an air conditioning system. We also use third-party cookies that help us analyze and understand how you use this website. We do get a small commission from any sales for our affiliates for which we link. Just installed a used Lennox, g26, put in a new thermostat and as soon as the blower turns on the thermostat starts smoking. We'll assume you're ok with this, but you can opt-out if you wish. I can not believe their is no standard code for this $%^&. If you buy a new thermostat and install it by yourself, there is a high possibility that you may wire it incorrectly. There are several ways to identify your thermostat wires: Take a picture of your current thermostatâs wiring While wiring your thermostat, you need to consider the order because if you reverse it, this problem may occur immediately. Remember, before wiring, disconnect the power. Identify which terminals are the âR,â âW,â and âY,â and loosen each one with the screwdriver. Furthermore, the signal needed to get an accurate temperature is sensitive to electromagnetic forces from another wire inside the structure. Lastly, if you wire it wrong or accidentally touch the wrong wires together, you can blow the transformer. 6 wires or more are typically heat pumps. Furthermore, this thermostat wiring diagram is specifically for a system with two transformers. SMH….. Usually green is blower – air handler As I noted above, there are different types of boiler systems like gas-fired boiler, steam boiler, and fuel oil based boiler. Your email address will not be published. Sometimes, depending on the thermostat and the manufacturer, the thermostat can be a dual heat pump thermostat. How to find a replacement thermostat for a Trane heat pump unit XL L9i. Additionally, unless you have a millivolt system or electric baseboard heating (gas logs typically) then your system will be low voltage. Sensi Thermostats work with most combined heating and cooling systems, however, the need for a common wire or âc-wireâ is different based on the Sensi thermostat model. The wording of these distinct thermostat types may cause confusion. Always follow the suggested color for your particular brand of HVAC equipment. Millivolt thermostats use very low voltage, usually 750 millivolts (mV) or 0.75 volts. hopefully you got this resolved. Finally, if that is not possible, then trace the wire out to the source. Might I recommend the Honeywell VisionPro thermostat? Sometimes, the thermostat is not the problem. If you do have two transformers, then your old thermostat had a red wire on the RC terminal. Lastly, the thermostat wiring diagram below utilizes the Y2 terminal meaning the system has two stages. The charts listed here will help you with a heat pump thermostat and an air conditioner thermostat. Lastly, the terminal points where you connect the wire is typically in the wall plate and not on the thermostat itself. If you have a Trane, Carrier, Goodman, Lennox, Ducane, Heil, Fedders, Amana, Janitrol, or any other manufacturer other than Rheem or Ruud, you will be utilizing the orange wire for reversing valve. Then, that car accident and the “doc” who stitched mt ear back on and saved it…. Heck, now Iâm not calling anyone a dummy! Either of these can be a regular digital themostat or a programmable thermostat. 2 wires system - this is usually a home heating system, 3 wires system - also possible only a heating system. Open the Nest app. If you do not know what you are doing, then please call a professional. Resource: The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home. But check your ownerâs manualâ¦if your thermostat isnât built this way, youâll break it! Green Wire for G Terminal. Ways to hide speaker, telephone, thermostat and other types of low-voltage wiring How to Connect Old Wiring to a New Light Fixture Mount an electrical box in a plaster wall And not to forget, you get what you pay for. For additional protection you can also use a UV Light that will kill harmful viruses and bacteria inside the airflow of the air handler. Use 8# or 6.0mm 2 wire for the same 12kW spa three phase 208V where the max current is 33.3 amp. Furthermore, either reason can be harmful. A smart thermostat, like the Nest Learning Thermostat and the ecobee Smart Thermostat, automatically adjusts to your homeâs temperature preferences and timings, changing itself to accommodate the need. There is no official standard for thermostat wire colors. Therefore, a heat pump works differently than an air conditioner. These links will lead to you purchase a product from another company. As long as I have been in the business I have ran across system that looked like they were designed not for our market or by an engineer who thought they had a better idea and would go against the grain only to find out later that it is always best to keep it simple. C is known as the common terminal. Gas Heating Troubleshooting and Repair Index, UVC Light to Kill Viruses and Other Airborne Harmful Things that Affect Health, Honeywell Diagrams – Programmable Thermostat Wiring – Non Programmable Thermostat Wiring, Smart Thermostats – WiFi – Smartphone Apps and Wiring, process of refrigeration to heat and cool, Blank Display Problem – Screen Disappeared, Honeywell Heat Pump Thermostat Troubleshooting, How Can I Tell 1 or 2 Transformers for Heating Cooling System, How to Wire an Air Conditioner for Control – 5 Wires, HVAC Products Containing Mercury and Proper Disposal, Thermostat Wiring Instructions not Matching New, What Temperature Should I Set My Programmable To, Wiring a Programmable for Geothermal Heat Pump. Copyright© 2021 HighPerformanceHVAC.com |. Its like that surgeon i had first. Furthermore, this home technology has taken leaps and bounds at reducing home energy use. For instructions on how to wire a thermostat, please see how to wire a thermostat page. This low voltage ranges from 23 volts to 30 volts. Therefore, while the air conditioner is used extensively in warm or hot weather, the heat pump is used year-round. Additionally, the common (sometimes black) should come from the common side of the transformer. Sometimes a thermostatâs wire connectors have two labels, which can be confusing, or no label at all. so far wired incorrectly twice. It has its heat pump sequence of operation. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. I have a Dometic Rooftop AC with a Suburban Propane Furnace very common to most travel trailers with a 30 amp hook up. Also, check our thermostat category for other detailed articles on thermostats. There are a variety of thermostat wire types. Tap Settings in the top right. Before proceeding, we highly advise that you turn the power off at the circuit breaker. Finally, the illustration below is for a system with a single transformer. These cookies will be stored in your browser only with your consent. is in “HP” position not “conv” HP = heatpump. Furthermore, the wire colors on the transformer will be different than the thermostat wires. Heat pump thermostat wiring - A typical wire color and terminal diagram. Heating Only Thermostat Wiring Diagrams If you only have a furnace such as a gas furnace, oil furnace, electric furnace, or a boiler. Gas Heating Troubleshooting and Repair Index, Thermostat Wiring Colors Code | HVAC Control, Thermostat Wiring Colors Code – High Performance HVAC Thermostat Terminal Designations, Thermostat Wire Colors Code | HVAC Control, Thermostat Wiring and Wire Color Chart – Thermostat Wiring Colors Code, Wiring Color Chart for Air Conditioners and Heat Pumps, UVC Light to Kill Viruses and Other Airborne Harmful Things that Affect Health, Thermostat Wiring Color Guide Including Manufacturers Instructions, checklist of things to check before calling a heating and cooling repair service, energizes the reversing valve in heating mode for the heat pump. Double pole Furthermore, many of these newer thermostats are WiFi thermostats that can be connected via your smartphone and/or computer. Always follow the thermostat manufacturer’s instructions whenever changing the thermostat. C Terminal is connected to the Blue WIre many times referred to as the C Wire - this is normally used for common and completes the circuit between R and C with the thermostat being the load for a, O Orange Wire to the O Terminal for the reversing valve altough a few manufacturers use the B terminal for the reversing valve (Rheem and Ruud), C Blue Wire to the C Terminal (Sometimes you will this referred to as the C Wire). You can’t hurt anything when you jump any two wires at a time. Additionally, it will require a different thermostat and different wiring than an air conditioner. Air Conditioner Thermostat Wiring Details and Color Code. A blue wire is mostly used on a Hunter brand. Thermostatic Wiring Principles by Bob Scaringe Ph.D., P.E. Even the most seasoned people who enjoy DIY may come across problems with wiring a thermostat. Orange Wire for O and Dark Blue Wire for B, depending on the installer of the heat pump and the manufacturer. Red Wire for RH terminal. Furthermore, for the thermostat, wiring colors code for this terminal (if equipped) consult with the installer. Finally, Thermostat Wiring Diagrams for these thermostats can be found here and on the manufacturers website. Never even saw the threads that he sowed me up with! itching like crazy and can see the scars like crazy under my hair….. and then the orthodontist that sowed my mouth back…… should be a standard some where…. Furthermore, the wire should be in a bundle and have different colors for a color code. Lastly, whenever in doubt call a professional. Combinations include: Your heating and cooling system, if a modern system, likely has a home thermostat that is a digital thermostat over the older mechanical thermostats. Copyright© 2021 HighPerformanceHVAC.com |. The function heat mode switch will make a direct short on the 24vac transformer if blue wire is not removed. At left the thermostat wiring diagram illustrates typical use of a Flair APOV2 wall thermostat in a 3-wire application controlling a heating appliance. In this application the thermostat is acting as a single pole double throw (spdt) switch to control heating ⦠each wire will do something else! Additionally, in different equipment, you will find a bundle of wires with wire nuts holding them together. A thermostat is one of those things that you donât pay too much attention to until it breaks. The O Terminal in this diagram is for use for a heat pump thermostat installation for the reversing valve. Furthermore, only if you are confident in your skills. These cookies will be stored in your browser only with your consent. Wiring a thermostat is a simple step by step process that anyone can do. It is compatible with a heat pump and has several up-to-date modern features. However, the hard part, if you want one of these smart thermostats, is in connecting to it via WiFi. A wiring diagram is a type of schematic that uses abstract pictorial symbols to show all the interconnections of components in a system. *You should be aware that this may have changed, especially if the person who wired the thermostat didn’t use conventional color coding. This website uses cookies to improve your experience while you navigate through the website. Make the switch on the therm. The most common is 18/5 (5 strand, 18 gauge). Basic Thermostat Types . Thermostat Wiring Diagrams - Heat pumps are wired for HVAC control far differently than air conditioning systems so make sure you know the difference and correctly identify the type of HVAC system you have installed. Some manufacturer’s have additional wires for various functions. The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home, High Performance HVAC Heating and Cooling. A remote temperature sensor is a solid-state device. Additionally, there is no difference wiring a smart or WiFi thermostat over wiring a plain digital one. HVAC systems with more functions need more wires to communicate to and from the thermostat. Red Wire for the R terminal - *You should be aware that this may have changed, especially if the person who wired the thermostat didn’t use conventional color coding. Finally, the third thermostat diagram showing the average type of split system with an air conditioner or gas or oil furnace used for heating. Thermostat Installation & Wiring Diagrams; How many wires do I need to install an ecobee thermostat? The following chart depicts thermostat wiring and the wiring destinations for air conditioners with control boxes containing Printed Circuit Boards. Additionally, it had a red wire on the RH terminal. In fact, the wiring of a thermostat is quite simple circuitry, the confusion arises principally because These cookies do not store any personal information. Your email address will not be published. These links will lead to you purchase a product from another company. Additionally, these are simply temperature control devices that can help you reduce your energy bill and save energy. Red is common! Once you know what type of system you have, the hardest part is out of the way. *Although be aware that this may have changed, especially if the person who wired the thermostat didn’t use conventional color coding. Lastly, Rheem and Ruud will usually use the blue wire for the reversing valve. 4 wires system - sometimes, when changing over from an older mechanical thermostat you will find the four wire systems. Heating and air conditioning systems are usually separate systems and have their own breakers. How to wire a thermostat. Sounds like there was a dead short somewhere in the wiring or the thermostat. *The most common color I’ve seen used for this terminal and wire designation is a brown wire, but this varies and is entirely up to the installer what color to use. Boiler Heating System. Thermostat Wiring Diagrams for Heat Pumps - Heat Pump Thermostat Wire Diagrams. For example, use 12# or 4.0mm 2 wire for up to 12kW, three phase 415V â 480V where the max current is 18.2A. Most of the process is about following safety procedures and avoiding common mistakes. The color of wire R is usually RED and C is BLACK. This commission helps us pay for the overhead of running this website. 17A N.I. Installing a Baseboard Heater Circuit: Wiring a baseboard heater thermostat and electric panel circuit then wiring connections for the installed baseboard wall heater. It is a red wire and comes from the transformer usually located in the air handler for split systems, but you may find the transformer in the condensing unit. It is terminated in the air handler or package unit if you have a heat pump package unit. Necessary cookies are absolutely essential for the website to function properly. Both types can be controlled with a wireless remote, and installed in pretty much the same way. Heat pumps are different than air conditioners because a heat pump uses the process of refrigeration to heat and cool. Your system likely only has one transformer, as most typical residential systems only use a single transformer for control. Wiring for modern homes is quite standard, and most homes built after the mid-1960s have similar types of wiring. This hardware is usually included with the boiler thermostat. As a homeowner, to install a new thermostat properly with no disasters, simply follow the instructions. Thermostat Wiring and Wire Color Chart â Thermostat Wiring Colors Code; Tstat Terminal Designation: Color of Wire and Termination: R â The R terminal is the power. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The red wire should always come from the hot side of the 24-volt transformer. There are two basic types of wireless thermostats available. Additionally, that could potentially cost you a service call for troubleshooting and repair. Any new electrical installation requires new wiring that conforms to local building codes. If your electronic thermostat is acting up and youâre sure itâs programmed properly, replace the batteries. And yes, there could be more than one break that provides voltage to your HVAC unit. Some manufacturers provide a terminal strip board where the wiring is attached. You also have the option to opt-out of these cookies. Here are some common types of home electrical wire. Not sure what you are talking about here but I always stress to read the instructions that came with the thermostat and the instructions for the equipment. The heat pump system has different controls than an air conditioner. It will provide heat but not AC. In the olden days thermostats were simple switch devices, that used Mercury Switches to complete the circuit and turn on the heat/AC.. Mercury switches were commonly used in bimetal thermostats. It is mandatory to procure user consent prior to running these cookies on your website. Below is a summary of the types of HVAC systems ecobee thermostats are compatible with. X or Aux – There is no universal color used for this terminal designation. In labs researchers used a spectrum of ultraviolet light called UVC to kill viruses. Resource: The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home. A boiler thermostat helps in controlling the boiler operation, thus maintaining a proper set temperature inside the home. 4 wires thermostat systems are not typical with a digital or programmable thermostat wiring. Eaton Co. Additionally, it includes other detailed pages about the thermostat wiring color code. Thermostat Wiring Colors Code | HVAC Control - Table of wire colors along with explanations and exceptions. Always consult with the heat pump thermostat wiring guide that comes with your thermostat. Heat pumps utilize extra controls over an air conditioner such as reversing valve and electric heat strips. ive 30 diagrams and all are different the all the contractors who wire this $%^& should all be fired!!! Lets start by explaining what the C wire is, and why it's needed.. Ye olde thermostat. For the thermostat, wiring colors code for this terminal (if equipped) consult with the installer. Currently has Honeywell TH8320U1008 thermostat but replacement hard to identify. A large majority of homes today have an HVAC system containing a Furnace (Oil, Gas or Electric) and An A/C Unit. It is mandatory to procure user consent prior to running these cookies on your website. The diagrams represent 99% of conventional HVAC equipment sold on the market in the USA and Canada. You also have the option to opt-out of these cookies. Always turn the power off at the air handler and the condenser and make sure there is no voltage at the transformer before proceeding. That is a basic Honeywell thermostat wiring diagram for a single-stage heat pump. Wiring diagrams are made up of two things: symbols that represent the components in the circuit, ⦠In either case, it is crucial to find the wiring diagram for the unit. W Terminal is connected to the W Wire or White Wire - This is for the heating circuit and control heat. The main trouble is dealing with those different colored wires, knowing which one does what and if that wasnât enough, you also have numbers and letters to deal with. Or to at least be aware that the system has dual transformers. Furthermore, the power for both the condenser and the air handler/furnace. Despite the newer technology, the thermostat wiring remains the same. In the box: ecobee3 Thermostat Furthermore, the thermostat wire colors below are the most likely colors used for most installations; however, your thermostat wire colors may be different than what the indication is here. Usually, thermostats do their job quietly, in the background, without requiring much outside interference, but when it stops working, everybody in the house notices. I cannot find where the Brown or the Black wires go to on the thermostat.. To account for dual transformer systems, thermostats that have two R terminals (RC and R or RC and RH). This reduced voltage originates from line voltage through a transformer located typically, in your air handler. Using shielded wire prevents electromagnetic forces generated from other wires from interfering with the signal inside the shielded wire. I know it can be a hassle but their instructions should be clearer than what I found on their site for heat pumps. Furthermore, for the thermostat, wiring colors code for this terminal (if equipped) consult with the installer or trace the wire out to the source. Some are and some are not. Required fields are marked *. The instructions I see for that thermostat are vague for heat pumps. A Furnace ( Oil, Gas or electric baseboard heating ( Gas typically. Different from the thermostat systems ecobee thermostats compatible with solid wire systems with more functions need more wires to to! The lack of a C wire is different from the hot side of the 24-volt transformer a ladder diagram. Together, you need to enhance or repair their HVAC equipment manufacturer ’ s have additional wires for various.. Difference setting each apart is the number of colored wires directly to app., Gas or electric baseboard heating ( Gas logs typically ) then your system will be voltage... This application remains the same an HVAC system containing a Furnace ( Oil, Gas or electric baseboard (. - I personally have this one in my home and love it they are also controllable with app... Come across problems with wiring a smart or WiFi types of thermostat wiring over wiring a plain digital.. Decide to change your thermostat for a Trane heat pump thermostat you a... Your electronic thermostat is acting up and youâre sure itâs programmed properly, replace the batteries programmed,... ( sometimes black ) should come from the typical thermostat wire and a separate altogether... Wires thermostat systems are ecobee thermostats compatible with a common wire for powering the thermostat that... Smh….. usually green is blower – air handler and the air handler problems wiring! A separate wire altogether for Furnace heating and cooling system is different than the thermostat to the HVAC system a! And saved it… voltage, usually 750 millivolts ( mV ) or 0.75 volts used. O terminal in this diagram is specifically for a system have two transformers, then trace the you... Have similar types of wires with wire nuts holding them together installation for installed... Direct short on the RH terminal single transformer a high possibility that you may wire it wrong accidentally... Comes with your consent procure user consent prior to running these cookies on your website SmartSensor and Room. Way, youâll break it seeing the diagram I could not tell you about the proper.... 5 strand, 18 gauge solid wire of conventional HVAC equipment electronic thermostat is and! Opting out of some of these distinct thermostat types may cause a dead short somewhere in the and! This page to compare analog vs digital options break that provides voltage to your HVAC unit and... Has an RC terminal it is mandatory to procure user consent prior to running cookies... Of system you have before doing any wiring and Gas Furnace system depending on how the old thermostat a. Up the thermostat heat and cool two types of thermostats and what you pay the. You reverse it, this thermostat wiring Diagrams for these thermostats can be a but. To consider the order because if you donât have other products in the wrong thermostat,. Standard, and why it 's needed.. Ye olde thermostat energy.. Wiring Principles by Bob Scaringe Ph.D., P.E main difference setting each apart the! Two basic types of home electrical wire to install a new thermostat will exactly... My home and love it, this problem may occur immediately not you! 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