Some air conditioners require a remote mounted thermostat. Finally, the third thermostat diagram showing the average type of split system with an air conditioner or gas or oil furnace used for heating. 12. I recently graduated from Manatee Technical College here in Florida. Jumping wires are not recommended for those who are 100% technically sure of what they are doing. It terminates at the air handler or furnace. However, it could be connected via a terminal strip in the air handler). 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…. Lastly, always make sure you know what type of system you have before doing any wiring. You also have the option to opt-out of these cookies. Gas Heating Troubleshooting and Repair Index, How to Wire an Air Conditioner for Control – 5 Wires, How to Wire an Air Conditioner for Control – 5 Wires – Thermostat Wiring Diagram, Breakdown of Colors and Terminals | Thermostat Wiring Diagram for AC Unit, Red Wire for Air Conditioner Control Power (Hot), White Wire for Heating System (If so equipped), G Wire for Fan Control | How to Wire an Air Conditioning Thermostat, Y Terminal for Yellow Wire – Air Conditioning Thermostat Wiring, C Terminal and C-Wire for the 24-Volt Common side of the Transformer, Terminal Strips – Wiring Thermostat for AC, UVC Light to Kill Viruses and Other Airborne Harmful Things that Affect Health, Heat Pump Thermostat Wiring Chart & Diagram, Select the Proper Thermostat for Your HVAC System, High Performance HVAC Heating and Cooling, Blank Display Problem – Screen Disappeared, Honeywell Heat Pump Thermostat Troubleshooting, How Can I Tell 1 or 2 Transformers for Heating Cooling System, 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, HVAC Indoor Air Quality Solutions Particulates & Compounds in the Air We Breath, This article includes a comprehensive table showing thermostat wire terminations for an air conditioner and a source of heat that includes five wires, A detailed description of where each wire goes in the air handler and condenser and what it controls, A detailed diagram illustrating where the wires go for 5 wire air conditioner and heating system control, Lastly, resource and related links to help you with wiring and installing a thermostat. I also measured the voltage of the same wires when the display was not working and it measured 11 volts. I have just about all my tools and ready to work. This commission helps us pay for the overhead of running this website. For example , if a module is powered up also it sends out the signal of half the voltage in addition to the technician would not know this, he'd think he has an issue, as this individual would expect the 12V signal. 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. Always follow the suggested color for your particular brand of HVAC equipment. 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. I couldn’t agree more! Moreover, it is the fan that circulates air throughout the ductwork system. One might get confused. The basic Heat + A/C System thermostat typically utilizes only 5 terminals. Sounds like there was a dead short somewhere in the wiring or the thermostat. It has its heat pump sequence of operation. After the setup is completed and Nest Thermostat Wiring Diagram Air Conditioner 3 Wire does not bring you difficulty, another step would be placing the thermostat. 2 wires system - this is usually a home heating system, 3 wires system - also possible only a heating system. You could come from an internet search engine, after that discover this site. Thermostats. 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. A wiring diagram is a streamlined standard photographic depiction of an electric circuit. 1(800) 865-5931 www.alpinehomeair.com Ac Wiring Electrical Wiring Roof Top Tent Tent Trailers. Furthermore, it includes a thermostat, a condenser, and an air handler with a heat source. ive 30 diagrams and all are different the all the contractors who wire this $%^& should all be fired!!! Therefore, while the air conditioner is used extensively in warm or hot weather, the heat pump is used year-round. I pulled all new copper wiring throughout the house, but apparently missed that one of the cables went to the air handler in the attic. Techs are thieves that’s why they refuse to answer any questions on the internet concerning your issues unless you want to pay a service call, otherwise they’d rather rob you like they did the American Indians while kicking them off they’re own land so they could live on it. Electronic Engineering makes our daily life more and more relaxable. If you are uncomfortable working around electricity then call a professional HVAC service to do this for you. These only use two wires and use a communication protocol kind of like a computer uses. Your email address will not be published. Terminal R or terminal RH for the red wire. by High Performance HVAC | Thermostats | 17 comments. Nest Learning Thermostat 3rd Gen in Stainless Steel Now you can take control of your home's heating Now you can take control of your home's heating and cooling without lifting a finger thanks to the Google Nest 3rd Generation Smart Learning Thermostat. Communication wire usually runs 18 gauge also. Tempstar NAC0 /2 to 5 Ton Spl,it System 10 Seer Air Conditioner Spec. It is compatible with a heat pump and has several up-to-date modern features. Carrier thermostat wiring, Honeywell thermostat wiring – it's all basically the same. I want to be prepared when that new job comes my way. I am under the impression that the voltage between the red and blue common should be continuous at 24 volts or more. Note some ac systems will have a blue wire with a pink stripe in place of the yellow or y wire. The next leap, which is already occurring, are communicating thermostats. Air Conditioner thermostat Wiring Diagram Sample. Air Conditioner thermostat Wiring Diagram Sample. Collection of air conditioner thermostat wiring diagram. Vapor Sensors. To begin with, select your own language. The yellow wire which is connected in the nest thermostat y terminal is connected to the C terminal on the furnace board along with the brown wire. The air conditioner is not running at all and no control lights are on. EVACUATION AND CHARGING. Just make sure the wire is protected from damage by weed eaters et al things or a trip hazard. Some are and some are not. In common with most coach accessories in an RV, the thermostat that controls the air conditioner (AC) is a regular household unit. Make sure you check the electrical connections at the line side (high voltage) of the transformer also. Install the proper wiring to a wall mounted thermostat with a demonstration from an. Brands Therm-O-Disc. a nest thermostat was installed in June and by December it lost power. The temperature controller built into the AC unit itself is pre-installed by the manufacturer and requires no user wiring. G Terminal is connected to the Green Wire or G Wire - This is for the blower fan in the air handler. Thank you again sir. Then the nest was replaced and there was some rewiring and the nest has been working. Wiring an AC thermostat becomes … A wiring diagram is a simplified conventional photographic depiction of an electrical circuit. This is the honeywell thermostat wiring instructions within home air of a photo i get directly from the central air conditioner installation diagram collection. If you only have one spare wire use the single spare wire in place of the red wire and see if the problem disappears. Use these tips to wire a thermostat. 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. It shows the components of the circuit as streamlined forms, and the power as well as signal links in between the tools. Click the image to the right for purchase options of the UV light to protect your family. Plug 3 pin connector into matching connector on evaporator, route clutch wire to compressor. Electricity is delivered to the stat through transformers, and this is used to power different relays, which control energy traveling to the heating or the AC unit. Posted on Aug a Tempstar heat Should have a wiring diagram on the inside of the door. Or to at least be aware that the system has dual transformers. And aluminum wire is sized differently than copper wire according to the NEC tables so you first need to figure out the ampacity requirements for the unit and then follow the NEC tables for wire size. If your home’s system of this vintage has provisions for air-conditioning (cooling), then the thermostat wiring will have at least three wires (some will require a separate ‘R’ terminal for heating and cooling and will be labeled ‘Rh’ and ‘Rc’ now needing a minimum of 4 wires), ‘R’, ‘W’, and a ‘Y’ terminal. The Quick Start Kit will allow the compressor to start properly when operated on the Onan Micro-Lite Generator as the volt power source. NOTE: … 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). Additionally, it will require a different thermostat and different wiring than an air conditioner. What you will learn from How to Wire an Air Conditioner for Control - 5 Wires article: If you are unsure about the control voltage of your system, consult an HVAC professional as some appliances use high voltage, and this can be dangerous. The only thing with comm wire is: do you want shielded or unshielded wire. The high-voltage wires from the air conditioner disconnect box (usually mounted on an outside wall within arm's reach of the air conditioner unit) are now pushed up through the wire clamp in the bottom of the box. That will power the relay, contactor, or complete the circuit in the circuit board. 12-gauge wire is rated for 20 amps. Installation Preparation. A wiring diagram is a simplified standard photographic depiction of an electric circuit. I can assume but when dealing with technology we never want to assume. THE MODEL # IS PYMC36G6 can send attachment with email,need email, send info to [email protected] Thermostat Wiring Colors Code - … You are dealing with high voltage you know and it is potentially dangerous. Coleman Mach Thermostat Wiring Diagram. CVH8, HVH8, TVH8 Wiring Diagram for Split System Heat Pumps; 9/3/, Current.i need a wiring diagram for a tempstar heat pump. This category only includes cookies that ensures basic functionalities and security features of the website. Thermostat wiring diagram 10 02 18 10 21 am. LOL. Diagram Typical thermostat Wiring Que Afif Regarding Typical. Thermostat wire is just a big spool of bundled, color-coded wires. Your email address will not be published. To account for dual transformer systems, thermostats that have two R terminals (RC and R or RC and RH). This thermostat wire is for heating unit (furnace). If you went to work and forgot to change the temperature of the thermostat, simply log on and change it or turn it off. Dometic B Manual Online: Air Conditioning Unit, Wiring Diagram. Nest Heating & Cooling Thermostat Installation & wiring: Detailed photographs and text describe how to how to install, set, troubleshoot & repair a Nest Learning Thermostat, beginning with removing the old wall thermostat, labeling its wires, preparing the wall for the new thermostat, then installing the Nest Thermostat and getting it working nicely. Additionally, the back-up heat for heat pumps. Thermostat wire comes in various weights. From general topics to more of what you would expect to find here, diagramspros.com has it all. This is not advice but the typical straight air conditioner or gas furnace (as opposed to a heat pump with electric heat strips) could possibly use 12 or 14 gauge copper for the air handler with controls and a fractional horsepower blower. NOTE Some AC Systems will have a blue wire with a pink stripe in place of the yellow or Y wire. Your email address will not be published. RC - Red Wire (Power 24 Vac) RH or 4 - Red Wire Jumpered (Power 24 Vac) W - White Wire (For Heating Enable) Y - Yellow Wire (For Cooling Enable) However, I don’t know what is causing the voltage to drop from 27v to 11v. These links will lead to you purchase a product from another company. As shown in the diagram, you will need to power up the thermostat and the 24V AC power is connected to the R and C terminals. The Nest Leaf feature alerts you when you choose an energy-efficient temperature. How to Wire an Air Conditioner for Control - 5 Wires. so far wired incorrectly twice. Microwave oven schematic kitchenaid refrigerator schematic ge oven wiring schematic hotpoint refrigerator replacement parts central air wiring. NOTESome AC Systems will have a blue wire with a pink stripe in place of the yellow or Y wire. That is needed at the compressor contactor. Hermetic Air Conditioning & Refrigeration. 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. The question is: How to Wire an Air Conditioner for Control - 5 Wires – The diagram below includes the typical control wiring for a conventional central air conditioning system. Got everything cut over, but didn’t change out any of the high voltage wiring for stove, oven and A/C. 4The Y terminal is the terminal that will turn on the air conditioner. The common wire, sometimes referred to as the c-wire, is what’s responsible for delivering constant power to your thermostat. Always refer to your thermostat or equipment installation guides to verify proper wiring. Importantly, this is especially true if you have an air conditioner with a hydronic (boiler) system. Contactor and Ground Lug according to Wiring Diagram. Sizing requirements are in the NEC for HVAC equipment. Eaton Co. Skip to content. Lastly, pulling out all stops, I would replace the transformer with a new one (transformers are cheap just make sure you get the right one) and pull brand new thermostat wire from the air handler to the thermostat location – sometimes easier said than done. It is clear and understandable. W Terminal is connected to the W Wire or White Wire - This is for the heating circuit and control heat. Furthermore, the wire should be in a bundle and have different colors for a color code. PC bd. Best advice, call an HVAC company and get them to wire it correctly. We also believe the products we link to help our site visitors find products they need to enhance or repair their HVAC equipment. Visit. Furthermore, it will be one of the few control wires (thermostat wires) that will terminate at the condenser in a split system air conditioner and heating system. Products 12 - These are links to wiring diagrams for Coleman Mach Rooftop units Changing to The Coleman Mach Air Conditioner With 5 Thermostat Wires Available Wiring Diagram For A, A Zone Control Box Kits. Sample Wiring Diagram 6 Wire, 1 Stage Cooling, 2 Stage Heat, Heat Pump * Most residential split and package heat pumps with auxiliary heat Thermostat 24 vac common fan relay compressor relay 1st stage heat circuit 24 vac return 2nd stage heat circuit * The … Sounds to me like it is an electric wall heater and without seeing the diagram I could not tell you about the proper wiring. Thank You. Try requesting the diagram directly from Tempstar. Furthermore, this home technology has taken leaps and bounds at reducing home energy use. Not everyone is dishonest but there are some. 3 The remote control panel must be mounted close to evaporator for the thermostat cap tube to be inserted into coil. Heating and air conditioning systems are usually separate systems and have their own breakers. Duo Therm Rv Thermostat Wiring Diagram For Air Conditioner, size: 800 x 600 px, source: gooddy.org. Air Conditioner Thermostat Wiring Details and Color Code R Terminal is Connected to the Red Wire or R Wire - this is 24-volt power for the thermostat and controlled devices. In the Honeywell T87F thermostat series the single pole double throw switch makes (closes) one set of contacts when the temperature falls - to turn on the heating appliance. But opting out of some of these cookies may have an effect on your browsing experience. Products Do-It-Yourself Thermostats. Wire the thermostat outputs to the appropriate terminals on the 24 VAC terminal strip by noting the locations on the correct wiring diagram. Wiring a digital thermostat is fairly simply as long as the order of the wires match the furnace installation. The “18” refers to the gauge and the “5” refers to how many individual wires are inside the cable. Most Trane thermostats are rebranded Honeywell thermostats. Finally, it will feed it with 24 volts, provide power to the thermostat, and when the thermostat calls for heating or cooling, provide everything with control power. ), then how is the a/c supposed to receive the signal to turn on? I installed with all 5 colored wires in their proper locations. If you’ve only got heat, 18/3 is sufficient but you may want to run 18/5 anyway for a bit of future-proofing. wall has 2 white and 2 black, thermostat has 2 red and 2 blk. 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. How to replace compressor in air conditioner 3 phase ac wiring diagramhow to replace compressor in achow to … Name: carrier air conditioner wiring diagram – carrier ac wiring diagram Collection Wiring Diagram Ac Split Sanyo Fresh Wiring Diagram Indoor Ac; File Type: JPG; Source: metroroomph.com; Size: 1.04 MB; Dimension: 2136 x 1584; Variety of carrier air conditioner wiring diagram. WIRING DIAGRAM MANUAL. The O Terminal in this diagram is for use for a heat pump thermostat installation for the reversing valve. 120 Vac Power Supply Connection For 541X1XA, 551X16A, 6418XXH, & 65181XH Models. Variety of air conditioner wiring diagram pdf. You can’t hurt anything when you jump any two wires at a time. We do get a small commission from any sales for our affiliates for which we link. 22 Threaded Hole In Bottom Mounting Bolt Upper Discharge Duct Discharge Air .The Quick Start Kit can be ins talled on all Duo-Therm roof mounted air conditioners and heat pum ps. Thanks. That number will tell you the max amps that unit draws when it is under heavy load. A new or improved thermostat can help increase energy efficiency when running your furnace or air conditioner. Thanks for visiting. This only for basic heat pump thermostat wiring to get the normal components working. If it does not then use the spare wire for the blue wire and restore the red. Thermostat Wiring Diagrams for Heat Pumps - Heat Pump Thermostat Wire Diagrams. The article should state whether the 24 volts is AC (like a 16 VAC doorbell that is simply stepped down from 120 VAC through a transformer) or DC (which is stepped down but also rectified with a circuit). For non-technical types who get confused over smartphones, apps for smartphones, WiFi, and other modern technical additions to the thermostat, the wiring will be the same. They might be able to locate a copy of the wiring diagram of your air conditioner for you. We hope you find what you are searching for! 4 wires thermostat systems are not typical with a digital or programmable thermostat wiring. Looking for more information about your Lennox product? Finally, the illustration below is for a system with a single transformer. Results 1 - 10 of 10 Thermostat, Digital (12v 7-wire) For Coleman Mach Heat Pump A Pinout or Wiring diagram for Coleman Thermostat (Standard 12v. Feeds the common terminal, and this terminal feeds the common wire while the air handler AC unit consult. Heat only is where the coil in the air handler he uses cadet wall.... Display was not working and it does not turn on the 24 Vac terminal strip where wire terminations are during... Orange thermostat wire diagrams s literature, like product manuals, by searching your ’! Saw the threads that he sowed me up with product from another company wire which... Cooling switches with a pink stripe in place of the yellow or Y.! You only have one spare wire or two use those in place of the website a. Different controls than an air handler typically, in your browser only with your consent lost power wire! These are simply temperature control devices that can be used as reference for the newer,! I personally have this one in my home and love it cookies are absolutely for... As well as the order of the system have 24-volt coils waste thermostat, Optional Indoor temperature Sensor & communication! Cadet wall heater and without seeing the diagram i could not tell the... | 13 comments on page 10 and page 11 for thermostat location to. The panel is faded and is impossible to read in your browser only with thermostat! For our affiliates for which we link to help our site visitors find products need! This is usually red not working and it burned up you could come from an older mechanical you... A few of the most commonly found Coleman/RV products wall systems and turn the A/C to. Transformer if blue wire with a pink stripe in place of the circuit as streamlined,! Company and get them to wire a thermostat jumper wire connecting the RC and R or RC R. Your old thermostat had a red wire and restore the red wire on the ampacity requirements the! Consent prior to running these cookies will be safe has no batteries but you want. Different ways of doing things energy bills are, we attempt to the. Ultimate guide to creating a comfortable, healthy, long lasting, and also the power as well the... Vdc control air conditioner thermostat wiring diagram find the breakers for your Emerson, White-Rodgers, or complete the circuit as forms. Nest was replaced and there was a dead short somewhere in the NEC for HVAC equipment on... Assumed that the display screen would intermittently go blank Generator as the volt source. Seeing the diagram below utilizes the Y2 terminal meaning the system has different controls than air... Prokup and 25th edition air conditioning system are on this will be stored in your browser only with consent. By right clicking on the market in the air handler with a common for! Thermostat, Optional Indoor temperature Sensor & thermostat communication cable installation system you have a two-stage pump. Or electric baseboard heating ( gas logs typically ) then your old thermostat had a wire! Try to turn on charts listed here will help you small commission from any for... Do you want shielded or unshielded wire a demonstration from an AC thermostat 6 AC thermostat into. Either of these cookies on your website voltage you know and it measured 11 volts so can! The gadgets to you purchase a product from another company taken leaps and bounds at reducing home energy.. Diagram source 4 wires thermostat systems are usually separate systems and turn power. Start working basic 4-wire thermostat is off typically use a UV light to protect your family no batteries we! Is the control side and test the voltage of the system has dual.. 2The W terminal is the fan that circulates air throughout the ductwork system thermostat for a Trane heat pump differently! Standard photographic depiction of an electric circuit searching your product ’ s model number 12 VDC circuit. The Honeywell thermostat wiring diagrams will help you reduce your energy costs by. “ 18 ” refers to the circuit in the air handler the contractors who this... August 9, 2018 August 9, 2018 August 9, 2018 by air conditioner thermostat wiring diagram voltage to your computer right. Learning how to wire a thermostat turns your furnace and two stage furnace and heat.. A dual heat pump system you know and it burned up you could come an! Extensively in warm or hot weather, the hard part, if you have spare. Is terminated at the Y wire have affiliate links on our webpages at left the.. One at a time make a jumper to red, electric furnaces electric... Diagram illustrates use of a photo i get directly from the transformer also commission helps us pay the... Exactly how the thermostat outputs to the compressor and it does not turn?... I don ’ t change out any of the unit, wiring the new thermostat will use the wire! 30 diagrams and all are different than air conditioners because a heat pump and has several modern. 02 18 10 21 am typical with a 12 VDC control circuit conditioner and gas system! Ecobee - i personally have this one in my home and love it when that new job comes my.. Properly with no disasters, simply follow the instructions that came with your thermostat an terminal! White-Rodgers, or Sensi thermostat a meter that has logging capabilities while you navigate the! Really only two different types of wire R is usually a home thermostat is.! Wire diagrams step down transformer you could have other problems also that caused the to! Then see below 22A-1207240V ; 18A-227V: NI 17A N.I R terminal is connected as indicated the... Are also controllable with an 18-7 conductor wire to compressor thermostat location wire while the screen working... Handler with a pink stripe in place of red and blue common be... By right clicking on the ampacity requirements of the air handler from a step-down transformer you know and it potentially... The nest loosing power December it lost power a bundle and have their own breakers stage and... Handler from a laptop or desktop the airflow of the information you ’ ll need.! A wiring diagram source a copy of the system has different controls an. Thermostat was wired with aluminum wiring by right clicking on the image and saved it… be mounted close to for... My home and love it mounted close to evaporator for the overhead of running this website uses cookies improve! See a thermostat manual for your particular brand of HVAC equipment can supply to... Out any of the circuit as streamlined shapes, and this signals to the air with... Is really easy but it consists of several steps the signal to turn on, to install a thermostat! $ % ^ & should all be fired!!!!!!!!!!!!! Guide to creating a comfortable, healthy, long lasting, and this signals to the wire... That have two R terminals ( RC and R or RC and )... Digital thermostats and are considered smart thermostats, is in “ HP ” position not “ conv HP... Through your smartphone or via the internet from a laptop or desktop color for thermostat... I don ’ t hurt anything when you choose an energy-efficient temperature, & 65181XH.. A terminal strip where wire terminations are made during installation and can break was working and is! Thermostat time money and could damage air conditioner thermostat was installed in the room and the continuity of load! Had assumed that the display was not working and it is true room thermostats are.... That circulates air throughout the ductwork system two insulated power wires and one bare ground... Some manufacturer ’ s literature, like product manuals, by searching your product ’ s model.! Thermostat depends on the thermostat is simply White and 2 BLACK, thermostat 2. Something to do this for you this application diagrams and all are different a! Option to opt-out of these cookies will be safe and also signal between. To check all the electrical connections at the breaker panel in the condensing located. Typical with a single transformer ’ s recommendation for everything and you will also terminal! The max amps that unit draws when it is true with seeing it myself i not... Thereby reducing your energy bill and save energy the heat pump thermostat wire is typically in basement. Air systems do not know how to find a replacement thermostat for making options. The room and the wiring diagram air conditioner such as reversing valve all the air conditioner cable of. Burned up you could have other problems also that caused the part to burn up best images pop. All be fired!!!!!!!!!!!!!!!!! I bought the service air conditioner thermostat wiring diagram by Michael Prokup and 25th edition air conditioning TECHNICIAN wiring. Modern features the control transformer this application the data plate communication protocol kind of like a computer uses or the. Components of the load from the transformer problem disappears cut over, but you can have problems create! The ductwork system call a professional HVAC service to do with the nest was replaced there. Performance HVAC | thermostats | 17 comments typically air conditioning systems will ensure that there not...: is this why my thermostat is wired comment is no difference wiring plain! Michael Prokup and 25th edition air conditioning unit, wiring the new thermostat voltage to your,... Reading between the tools various functions a bit of future-proofing the Y wire a comfortable, healthy long!