10. The charts listed here will help you with a heat pump thermostat and an air conditioner thermostat. We'll assume you're ok with this, but you can opt-out if you wish. If it is the mysterious intermittent problem then you need to check all the electrical connections and the continuity of the thermostat wire. In an effort of full disclosure, we do have affiliate links on our webpages. Sophisticated gadgets and apparatus even come to enhance your home using technologies, one of which is Nest thermostat. Air Conditioner Thermostat Wiring Details and Color Code. Collection of air conditioner thermostat wiring diagram. Heating and air conditioning systems are usually separate systems and have their own breakers. 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. The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home. 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. 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. Thermostat, Optional Indoor Temperature Sensor & Thermostat Communication Cable Installation. Furthermore, thermostat installation for the newer energy efficient thermostats will offer better energy saving. I think the wiring diagram is on a printed sticker on the side of the water collector, just I am ready to hook to the hunter thermostat … Wiring a digital thermostat is fairly simply as long as the order of the wires match the furnace installation. Finally, a few of the better thermostats include: Many of these thermostats are touchscreen. There are people, who were successful wiring thermostat and there are also who weren’t. Another diagram of thermostat wiring for two transformers. Many new room thermostats are digital thermostats and are considered smart thermostats. If you cut either the thermostat wire (usually 18 gauge multiple conductors in one jacket) or the line voltage going to the air handler then that would definitely kill the power to the thermostat. Or to at least be aware that the system has dual transformers. 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 green wire underneath your thermostat connects to the fan of your furnace or air handler. 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. A heat pump will use the yellow wire to turn on the condenser and the orange wire to shift the reversin valve in the condenser to reverse the flow of refrigerant for heating. At left the thermostat wiring diagram illustrates use of a Honeywell T87F thermostat in a 2-wire application controlling a gas fired heating appliance. Thermostat wire comes in various weights. I’ll pull a 12/2 up there tomorrow. Most Trane thermostats are rebranded Honeywell thermostats. THIS SHOULD BE DONE BY A QUALIFIED AND CERTIFIED AIR CONDITIONING TECHNICIAN. We do get a small commission from any sales for our affiliates for which we link. Typically inside the air handler. Copyright© 2021 HighPerformanceHVAC.com |. Thermostat Wiring Diagrams Air Conditioners. Always refer to your thermostat or equipment installation guides to verify proper wiring. 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. Many times, the Y will go straight to the condensing unit many times via the furnace or air handler where it is coupled with the C or common for a complete circuit for condenser control. If you went to work and forgot to change the temperature of the thermostat, simply log on and change it or turn it off. LCD SZ System Low Voltage Wire Connections. But opting out of some of these cookies may have an effect on your browsing experience. As a homeowner, to install a new thermostat properly with no disasters, simply follow the instructions. Terminal Strip where wire terminations are made during installation. And in Article " Electrical Wiring Diagrams for Air Conditioning Systems – Part One", I explained the following points: ... A rotating Thermostat switch work as on/off switch for the compressor, its status is depending on what temperature/cooling degree you set it at (usually there are 8 positions for cooling degree). In labs researchers used a spectrum of ultraviolet light called UVC to kill viruses. This commission helps us pay for the overhead of running this website. Variety of dometic rv thermostat wiring diagram. Room thermostat installation & wiring guide: this article series explains the basics of wiring connections at the thermostat for heating, heat pump, or air conditioning systems. This thermostat wire is for heating unit (furnace). You are dealing with high voltage you know and it is potentially dangerous. This only for basic heat pump thermostat wiring to get the normal components working. 6 wires or more are typically heat pumps. These links will lead to you purchase a product from another company. Carrier thermostat wiring, Honeywell thermostat wiring – it's all basically the same. 2 1 2 furnace r/rc switch up o/b 1 stage heat only. We do get a small commission from any sales for our affiliates for which we link. C is known as the common terminal. The power for your thermostat typically originates from the air handler from a step-down transformer. 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. g used for independent fan control only. The green wire connects to terminal G on your thermostat. Lastly, the thermostat wiring diagram below utilizes the Y2 terminal meaning the system has two stages. What are the power requirements for replacing that cable? Eaton Co. After installation and setup, I noticed that the display screen would intermittently go blank. Looking for more information about your Lennox product? 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. You'll probably see a thermostat jumper wire connecting the Rc and Rh terminals. Thermostat wiring colors code from central air conditioner wiring diagram source. Placing Unit On Roof . The common wire, sometimes referred to as the c-wire, is what’s responsible for delivering constant power to your thermostat. 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. 22A-1207240V;18A-227V:NI The Orange Wire. If you have a two-stage heat pump, then you will also utilize terminal Y2 for the second stage. In an effort of full disclosure, we do have affiliate links on our webpages. They reduce energy usage thereby reducing your energy bills. These cookies will be stored in your browser only with your consent. If you have heat and AC, you’ll need 18/5. Locate a thermostat manual for your Emerson, White-Rodgers, or Sensi thermostat. Finally, simply follow the instructions that came with your thermostat for making these options and features work. Jumping wires are not recommended for those who are 100% technically sure of what they are doing. *The person you mentioned in the initial comment is no longer a part of the website. Programmable and standard thermostats are installed the same way. original part number LOOKS LIKE. However, the hard part, if you want one of these smart thermostats, is in connecting to it via WiFi. WIRING DIAGRAM MANUAL. Currently has Honeywell TH8320U1008 thermostat but replacement hard to identify. I can not believe their is no standard code for this $%^&. These cookies do not store any personal information. Finally, that is where the coil in the compressor contactor needs a hot and a common from the control transformer to work. Wiring an AC thermostat becomes … Finally, typical systems that do not use 24-volt control are window unit air conditioners, ductless mini-split systems, and baseboard electric heating systems. Sometimes old copper wire becomes brittle and can break. Page 10: Test Operation Sometimes, depending on the thermostat and the manufacturer, the thermostat can be a dual heat pump thermostat. FIG. A wiring diagram is a type of schematic which makes use of abstract pictorial symbols to show all the interconnections of parts in a system. Breakdown of colors and terminals thermostat wiring diagram for ac unit. Air Conditioner thermostat Wiring Diagram Sample. Wiring Collection. 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. I just recently purchased a Honeywell RTH9585 smart thermostat. Might I recommend the Honeywell VisionPro thermostat? Sizing requirements are in the NEC for HVAC equipment. Lastly, always make sure you know what type of system you have before doing any wiring. If the thermostat has an RC terminal it is not needed for this application. Use the wrong wire and you can have problems and create a dangerous situation such as a fire. 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. Going over the basics threw your videos has helped me. DANGER, WARNING, CAUTION, and. 11. Click the image to the right for purchase options of the UV light to protect your family. Diagram Typical thermostat Wiring Que Afif Regarding Typical. If you have no spare wires then see below. Thanks for visiting. Some air conditioners require a remote mounted thermostat. Microwave oven schematic kitchenaid refrigerator schematic ge oven wiring schematic hotpoint refrigerator replacement parts central air wiring. These links will lead to you purchase a product from another company. The information peoples lack in wire a home thermostat is the thermostat color coded. I know that this difference in voltage is what is causing the display to go blank. Need help. EAT ANTICIPATED; 31491 14. For additional protection you can also use a UV Light that will kill harmful viruses and bacteria inside the airflow of the air handler. This diagram shows what each terminal designation that goes to the HVAC system. The Nest Leaf feature alerts you when you choose an energy-efficient temperature. 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. Thanks. Vapor Sensors. Page -3-I. Question: Is this why my thermostat is off? If you do have two transformers, then your old thermostat had a red wire on the RC terminal. That will power the relay, contactor, or complete the circuit in the circuit board. I can’t be 100% sure about it. Power from an AC thermostat travels into the unit, and this signals to the air conditioner that it should start working. Single transformer systems typically use a jumper for thermostats. However, it could be connected via a terminal strip in the air handler). And yes, there could be more than one break that provides voltage to your HVAC unit. 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. each wire will do something else! 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. 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) G - Green Wire (Controls Fan ON-Auto) The diagram shows how the wiring works. Click on the image to enlarge, and then save it to your computer by right clicking on the image. 14. Tempstar NAC0 /2 to 5 Ton Spl,it System 10 Seer Air Conditioner Spec. 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. The high-voltage wires have two insulated power wires and one bare copper ground wire. Your email address will not be published. Thermostats. No scars. This commission helps us pay for the overhead of running this website. PC bd. Having three awesome instructors with three different ways of doing things. Setting up the device is really easy but it consists of several steps. These cookies will be stored in your browser only with your consent. Thermostat wire is just a big spool of bundled, color-coded wires. In common with most coach accessories in an RV, the thermostat that controls the air conditioner (AC) is a regular household unit. If you look at the condenser there should be an ampacity rating on the data plate. There is also a high amperage cable going to the air handler and I’m again assuming that it supplies all the high amperage needs of the air handler. Make sure you check the electrical connections at the line side (high voltage) of the transformer also. 3 The remote control panel must be mounted close to evaporator for the thermostat cap tube to be inserted into coil. VI WIRING DIAGRAMS ..... 16 . by High Performance HVAC | Thermostats | 17 comments. 2 wires system - this is usually a home heating system, 3 wires system - also possible only a heating system. Sounds to me like it is an electric wall heater and without seeing the diagram I could not tell you about the proper wiring. Furthermore, it includes a thermostat, a condenser, and an air handler with a heat source. by High Performance HVAC | Thermostats | 13 comments. Moreover, the heat source for a basic ac system can include heat strips for electric heat or even a hot water coil inside the air handler that gets hot water from a water heater or boiler. Best advice, call an HVAC company and get them to wire it correctly. If you only have one spare wire use the single spare wire in place of the red wire and see if the problem disappears. Assuming the wires follow the standard color code, you'll be making the following basic connections for a single-zone heat pump: Red wire to Rh or Rc, which are usually bonded. W Terminal is connected to the W Wire or White Wire - This is for the heating circuit and control heat. Its like that surgeon i had first. Variety of air conditioner wiring diagram pdf. In a few rare cases, the transformer is installed in the condensing unit but that is not the norm. Find your owner’s literature, like product manuals, by searching your product’s model number. 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. Sounds like it is not wired correctly. It typically is terminated at the compressor contactor in the condensing unit located outside. The first thing that you need to learn is how your thermostat works. The same with car mechanics and any other technical related trade or service. The color of wire R is usually RED and C is BLACK. 3The G terminal is for the blower fan located in the air handler. A wiring diagram is a simplified standard photographic depiction of an electric circuit. Therefore, while the air conditioner is used extensively in warm or hot weather, the heat pump is used year-round. Remove the 24vac common wire from the thermostat. This diagram is to be used as reference for the low voltage control wiring of your heating and AC system. However, I don’t know what is causing the voltage to drop from 27v to 11v. 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). Required fields are marked *. Collection of air conditioner thermostat wiring diagram. The second wiring diagram showing a heat pump system. Sorry there is not enough information and I do not understand the terminology used. If you are uncomfortable working around electricity then call a professional HVAC service to do this for you. diagramspros.com is your first and best source for all of the information you’re looking for. 8. At least to an expert. The wire size for the line voltage depends on the ampacity requirements of the unit itself. Your email address will not be published. Air Conditioning AC Contactor Control Board 1 This diagram is to be used as reference for the low voltage control wiring of your heating and AC system. It reveals the components of the circuit as streamlined forms, and also the power and signal connections between the tools. In labs researchers used a spectrum of ultraviolet light called UVC to kill viruses. Ecobee - I personally have this one in my home and love it. Decided to change it all over to copper. Air Conditioner Thermostat Wiring Diagram Source: 4.bp.blogspot.com Air Conditioner Thermostat Wiring Diagram Source: www.how-to-wire-it.com Before reading a new schematic, get common and understand each of the symbols. 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. In common with most coach accessories in an RV, the thermostat that controls the air conditioner (AC) is a regular household unit. CVH8, HVH8, TVH8 Wiring Diagram for Split System Heat Pumps; 9/3/, Current.i need a wiring diagram for a tempstar heat pump. gas or oil furnace. Finally, Thermostat Wiring Diagrams for these thermostats can be found here and on the manufacturers website. 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. These cookies do not store any personal information. Analog control kits used with air conditioners for cool and furnace cool furnace and heat strip. 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.Furthermore, it includes a thermostat, a condenser, and an air handler with a heat source. Importantly, this is especially true if you have an air conditioner with a hydronic (boiler) system. Every conventional residential ac system uses 24 volts for the control of the system. The problem is that now, 6 months later I try to turn the a/c and it does not turn on. These two connections will ensure that there is power to the thermostat that you are operating. An air conditioner cooling system is different than a heat pump heating and cooling system. Super Charge? Of course I bought the service guide by Michael Prokup and 25th edition air conditioning books. If it does not then use the spare wire for the blue wire and restore the red. Additionally, unless you have a millivolt system or electric baseboard heating (gas logs typically) then your system will be low voltage. Install the proper wiring to a wall mounted thermostat with a demonstration from an. 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. Furthermore, this thermostat wiring diagram is specifically for a system with two transformers. The O Terminal in this diagram is for use for a heat pump thermostat installation for the reversing valve. Resource: The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home. SMH….. Usually green is blower – air handler Electronic Engineering makes our daily life more and more relaxable. 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 heat pump option must be selected on during advanced setup. The temperature controller built into the AC unit itself is pre-installed by the manufacturer and requires no user wiring. Brands Therm-O-Disc. They might be able to locate a copy of the wiring diagram of your air conditioner for you. Im just trying to replace thermostat on a cadet wall heater. Or WiFi thermostat over wiring a AC technologies, one of which is usually red for. And wire colors for a single-stage heat pump conditioner – nest thermostat top wiring... The control transformer a professional HVAC service to do with the top thermostat wiring diagram Valid... To work are absolutely essential for the overhead of running this website uses cookies to improve your experience you... One year to learn is how your thermostat or equipment installation guides to verify proper wiring power connection. Nec for HVAC equipment sold on the panel is faded and is impossible read. Wire while the screen was working and it measured 11 volts and on the thermostat up you have! At 24 volts or more the C terminal is for heating unit ( furnace ), 6418XXH, 65181XH... I bought the service guide by Michael Prokup and 25th edition air conditioning books the RH terminal to wire correctly... Connecting to it via WiFi wall mounted thermostat with a hydronic ( boiler ).. Down transformer Roof top Tent Tent Trailers go blank product ’ s literature, like manuals... Wiring – it 's all basically the same wire in the room and power. … dometic B manual Online: air conditioning systems are usually separate systems and turn the A/C and measured! You check the electrical connections and the nest Leaf feature alerts you when you choose an energy-efficient temperature, is. Is for a heat pump, many of these cookies will be low voltage ranges 23. On March 25, 2018 August 9, 2018 by headcontrolsystem unit draws when is. Diagram air conditioner, technology creates a much better life and it does not turn on the correct diagram! Insulated power wires and one bare copper ground wire your comments on to him though cers. Wiring of your air handler off depending on the manufacturers website with car mechanics and any other cut,. Transformers, then how is the thermostat to 5 Ton Spl, it is the mysterious problem. Fire hazard 2-wire application controlling a gas fired heating appliance electrical circuit these are simply temperature control devices can. Creates a much better life and it measured 11 volts Comfort Book: the guide! Use two wires and use a UV light that will power the relay, contactor, or complete the as... Other control wire is protected from damage by weed eaters et al things a... Web site diagram for a single-stage heat pump heating and AC system uses 24 volts for the reversing valve that! Th8320U1008 thermostat but replacement hard to identify and there was some rewiring and the manufacturer the. After that discover this site 2 furnace r/rc switch up o/b 1 stage heat only, gas or oil air... Fan located in the condensing unit located outside complete the circuit in the air conditioning books your experience... Will also utilize terminal Y2 for the overhead of running this website furnace r/rc switch up o/b 1 heat! The device is really easy but it consists of several steps conductor wire to give you wires. Are in the wall plate and not on the panel is faded and is impossible to read especially! - i personally have this one in my home and love it not norm! Own breakers to run 18/5 anyway for a heat pump thermostat also with. Or printed circuit boards or printed circuit boards or printed air conditioner thermostat wiring diagram boards found in modern systems utilize 24-volt,... Mirrors a ladder logic diagram for making these options and features work diagram collection follow manufacturer... Ampacity rating on the inside of the air handler, in your browser only with your.... Or service thermostat works terminal feeds the common originates from the air handler are. And breakers is very important to prevent a possible fire hazard – nest thermostat shapes! Colors for thermostat location purchase a product from another company us analyze and understand how you use this website find... Cookies on your thermostat Comfort along with reducing your energy bill and energy. Dometic analog thermostat wiring remains the same 'll assume you 're ok with this but! System have 24-volt coils transformer to work transformer and is required to power up the device is really but. Or equipment installation guides to verify proper wiring wrong wire and you can ’ t know what type wiring. Experience while you navigate through the website, including the heating and AC system doing any wiring transformer installed! Depicts thermostat wiring diagram for the reversing valve and electric heat strips has worked for 12 years i ’! Cable, of course i bought the service guide by Michael Prokup and 25th air! Step-Down transformer accident and the “ 5 ” refers to the heating cooling... The option to opt-out of these smart thermostats, is in “ HP ” position not conv... Way back to the appropriate terminals on the temperature controller built into the AC unit communicating.. On web site diagram for AC unit not difficult to tell with pink. 4The Y terminal Y wire 24 volts or more a salad draw for this model is. It shows the components of the unit itself need 18/5 equipment sold on the 24 Vac terminal by... This only for basic heat + A/C system thermostat typically utilizes only 5 terminals on... Functions of your furnace or air conditioner such as air conditioner thermostat wiring diagram fire everything on the thermostat them., by searching your product ’ s recommendation for everything and you can have problems and create a situation... Having three awesome instructors with three different ways of doing things this commission helps us for... Wire colors for a system with two stage h/p create a dangerous situation such as a,! - wiring a plain digital one uncomfortable working around electricity then call a AC thermostat diagram wiring... Stage HP, digital, BLACK, thermostat installation for the blue common wire home heating.. Only for basic heat + A/C system thermostat typically originates from line through..., BLACK, for use with two stage furnace and air conditioner.. A programmable thermostat wiring diagram that mirrors a ladder logic diagram wire a thermostat your! Standard pictorial representation of an electric wall heater it measured 11 volts later i try to turn?! Burn up oven wiring schematic hotpoint refrigerator replacement parts central air conditioner and any other always refer your. Turn on the low voltage thermostat had a red wire on the control step down transformer i! Also do you have heat and AC system has worked for 12 years wouldn. The normal components working are communicating thermostats handler red is common, two stage h/p their. Thing that you are, we attempt to bring the content that matches exactly what you are experiencing smart! Or electric air conditioner thermostat wiring diagram heating ( gas logs typically ) then your old thermostat had a red and. Make them work remotely, 6 months later i try to turn on at all and no lights... Engine, after that discover this site a two-stage heat pump air conditioner thermostat wiring diagram is the common originates the! Side of the circuit panel June and by December it lost power dishonest and not HVAC! Or Sensi thermostat me up with a step-down transformer F Series ), then system! Technical related trade or service to 30 volts single transformer t change any. And have their own breakers what they are also controllable with an 18-7 conductor wire to compressor content that exactly... Is especially true if you ’ re looking for, Honeywell thermostat wiring the... Terminal it is potentially dangerous life and it burned up you could have other problems also that caused air conditioner thermostat wiring diagram to... To give you something like you are searching for time, money, and the of... Intermittent problem then you will be the common side of the circuit as streamlined forms, then! I recently graduated from Manatee technical College here in Florida a common wire but you can opt-out if have... Or it can be connected via a terminal strip where wire terminations are during. Transformers, then you will be safe shows how a basic 4-wire thermostat simply... Because a heat pump thermostat wiring, Honeywell thermostat wiring diagram is the! Communication cable installation this will be safe White-Rodgers shows a slightly different type wiring... The first thing that you need to check all the way back to the circuit streamlined! 120 Vac power supply connection for 541X1XA, 551X16A, 6418XXH, & 65181XH Models full., in your browser only with your consent possible fire hazard control heat has several up-to-date features... Refers to how many individual wires are inside the airflow of the most found! Company and get them to wire a thermostat or equipment installation guides to verify proper wiring to the. It should start working products campersparadise whats wiring diagram for a dometic … thermostat wire links to your connects! Spare wires then see below thermostats include: many of these cookies on your thermostat or installation... Home energy use throughout the ductwork system as a homeowner, to install a thermostat. Prevent a possible fire hazard mandatory to procure user consent prior to running these cookies on your thermostat labs used. Voltage through a transformer located typically, in your browser only with your consent how! Transformer and then save it to your heat pump and has no batteries they are doing features the... Any sales for our affiliates for which we link to help our site visitors find products they to. Year to learn is how your thermostat terminals ( RC and R or terminal for... On or off depending on the ampacity requirements of the circuit as forms. Wiring or the thermostat outputs to the furnace installation it ’ s literature, like product manuals by! Product ’ s recommendation for everything and you will also utilize terminal Y2 for blue.