Thermostat wiring guide - A detailed wiring diagram for your specific model is included at the end of the install guide for terminal designation and references. If you want to check to make sure the HVAC configurations are correct after installation, refer to this article for instructions on how to configure thermostats .

 
STEP 1. Power off your Heating, Ventilation and Air Conditioning (HVAC) system by using the master switch or circuit breaker box. This is important for your safety. TIP: Look for your master switch or circuit breaker box in the basement, attic, utility closet, or behind a wall panel near the thermostat. STEP 2.. Watch transformers rise of the beasts online free

4 Nov 2021 ... Turn off the power to your thermostat · Remove your old thermostat's faceplate · Check your old thermostat for high voltage wiring · Take a ...Since 2011, households have been using Google’s Nest thermostat. Reliable and convenient, the Nest thermostat is one of (now) many smart home automation devices. Convinced? Here’s ...Installation Guide 2 18-HD98D1-1C-EN Contents 1. Safety NOTE: Use 18-gauge color-coded thermostat cable for proper wiring. Shielded cable is not typically required. Keep this wiring at least one foot away from large inductive loads such as Electronic Air Cleaners, motors, line starters, lighting ballasts and large distribution panels.These thermostats have 4 wires described as below: Red wire for 24-volt hot. White wire for heat. Green wire for the fan. Blue wire is the common wire (common wire can be of any other …Product Guides. Hive Community. Get Installation Help. Menu; Menu; Shop Smart Heating. Hive Thermostat Sale. Hive ... Hive Thermostat installation. Get a pro to install your smart thermostat, ensuring that your thermostat is installed correctly and safely, and so that you can quickly start saving energy and money. Hive Thermostat installation. Get a pro to … wire and must be removed before continuing. Use a screwdriver to release wires from terminals. The RTH7500 thermostat does not need jumpers. Example of Y R RC a jumper Terminals 1/4” to 3/8” 7 Record if you have wires in the following terminals. Do not include jumpers as a part of your count. The thermostat does not need jumpers. Terminal ... Contents hide 1 Honeywell Home T4 Pro Thermostat Wiring Diagrams 2 WIRING DIAGRAMS 2.1 Stage Cool Only 3 Transformer System, 1H/1C: Oil Furnace 3.1 Hot Water Boiler, Heat Only 3.2 Hot Water Heat with Power Open/ Power Closed, Series 20 Zone Valve 4 2H/1C: Heat Pump with Electric Aux Heat 5 References: Honeywell Home … Overview of this guide Welcome Page 2 In The Box Page 2 Dimension Page 3 Main Page Page 4-5 Installation Operating instruction Remove the old thermostat Old thermostat with C wire Old thermostat without C wire Page 6-7 Page 8-10 Page 11-16 Wiring diagrams Page 17-19 Page 20-22 APP Connection Page 23-29 Welcome Thank you for your purchase. Thermostat Terminal Designations Quick Guide - Detail Wiring Color Guide Below. Red-Wire - connects to the R terminal with the red wire. RC-Wire - connects to the RC terminal RC red. RH-Wire - connects to RH terminal RH heat. Y-Wire - connects to the Y terminal and is for cooling stage 1 with the yellow wire.Glossary C wire The “C” or common wire brings 24 VAC power to the thermostat from the heating/cooling system. Some mechanical or battery operated thermostats may not have this wire connection. It is necessary for establishing a Wi-Fi connection to your home network. Heat Pump heating/cooling system Heat pumps are used to heat and cool a …Contents hide 1 Tekmar 532 Non-Programmable Thermostat 2 Introduction 3 Features 4 Getting Started 5 Important Safety Information 6 Installation 6.1 Installation Location 7 Removing the Thermostat Base 7.1 Mounting The Thermostat 8 Thermostat Wiring 9 Testing the Thermostat Wiring 9.1 Switch Settings 10 User Interface 11 …Safety Precautions to check Thermostat Wire Color Code. Before we talk in detail about the thermostat wire color code, know that this guide is an overview for beginners.The objective here is to give you a quick tutorial on the different thermostat wire colors and what they do. Other manufacturers may have their own specifications, or the …Aug 3, 2023 · There are a few systems that can use the 6 (or more) wire thermostat wiring, these include. 2nd Stage Heat Pump. Heat pumps with Aux heat. Single stage Furnace with 2nd stage air conditioner. 2nd Stage Furnace with Single stage air conditioner. But you would also have other systems not mentioned above that use the 6 wire thermostat configuration. Use the New Backplate as a Template. Use the new thermostat’s backplate and a pencil to mark the wall. Using a small bit, drill holes at the marks for the backplate screws. (Install wall anchors ...Let’s break everything step-by-step: Remove the thermostat. Take a picture of the properly positioned wires. Unscrew both wires from the terminal. Put new 2 wires in the thermostat in the same path as they were in the old thermostat. Put the control panel back once you’ve reconnected both wires. It’s as simple as that.THERMOSTAT WIRING. 6 Wire Thermostat Wiring Diagram Guide. By Andrew Sikana August 3, 2023. Are you planning to install a new thermostat or upgrade your existing …CHECK PRICE & DETAILS ON AMAZON. Now follow the below-mentioned steps to install the Amazon Smart Thermostat. Step 1: First, turn off the power to your old thermostat. To do that, switch off the HVAC fuse in the electrical fuse box. Step 2: Open the faceplate of your old thermostat and check for high-voltage wiring.Page 1: Installation Guide T9 THERMOSTAT Installation Guide Online Guides honeywellhome.com... Page 2 Read before installing. Included in your box: Installation Guide Screws and anchors T9 Wi-Fi Thermostat Wireless room sensor Wallplate C-Wire Wire labels Adapter (optional) Tools you will need: You may need: Phillips screwdriver …The Nest app’s step-by-step instructions make it easy to install and wire your thermostat, so use it as your main guide. Refer to this article if you need extra help. To get started using...This exchange-traded fund is positioned to give investors exposure to companies taking meaningful steps toward reducing greenhouse gas emissions -- will it work and will it make yo...Based on Nest’s online compatibility checker data, the Nest Thermostat works with most 24V systems, including gas, electric, oil, forced air, variable speed, heat pump and radiant. It can …3M-22 Filtrete™ Room Thermostat Wiring Guide. Complete tables for Thermostat Wiring Terminal Notes for the 3M-22 Filtrete Room Thermostat are given here. Our photo just below shows all eleven possible thermostat control wire connection points on this device. (We don't like that sharp crimp in the red wire, nor should you.)Jul 18, 2023 · Mount the New Thermostat Base: Install the base plate of the Emerson thermostat onto the wall. You may need screws and a screwdriver. Use the built in level to level it up. Connect the Wires: Please see the wiring diagrams in fig 2-5 Connect each wire to its corresponding terminal as in the image below: fig 1. Contents hide 1 Tekmar 519 Radiant Thermostat 2 Introduction 2.1 Additional Features 2.2 Getting Started 2.3 Installation 2.4 Preparation 2.5 Installation Location 2.6 Removing The Thermostat Base 3 Mounting The Thermostat 4 Slab Sensor 079 Installation 5 New Installations 5.1 Retrofit Installations 6 Thermostat Wiring 7 Testing …Let’s break everything step-by-step: Remove the thermostat. Take a picture of the properly positioned wires. Unscrew both wires from the terminal. Put new 2 wires in the thermostat in the same path as they were in the old thermostat. Put the control panel back once you’ve reconnected both wires. It’s as simple as that.Installing your RTH5160 thermostat. Bundle and insert wires through the UWP. Pull open the UWP and insert the bundle of wires through the back of the UWP. Make sure at least 1/4 inch of each wire is exposed for easy insertion into the wire terminals. Insert the wall anchors.Fig. 1. Thermostat wiring diagram. Check Out Thermostat! Turn on the power to the heating system.! Turn setting knob all the way clockwise ; listen for clicking sound as switch makes contact. Electric heater should begin operation.! Turn knob all the way counterclockwise ; listen for clicking sound as switch breaks contact. Electric heater ...Trane touchscreen thermostat TCONT302 and TCONT303 guide. Guide for the remote space sensor and osa sensor WARNING: Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to …G – Green: Fan – this is for the blower in the air handler. R – Red: 24 Volt Power – Your air handler is powered by 110V, but it is converted to 24V for the thermostat. C – Blue: Common wire for continuous 24 volt power from the thermostat to the air handler. E – White (optional): Emergency Heat.Trane touchscreen thermostat TCONT302 and TCONT303 guide. Guide for the remote space sensor and osa sensor WARNING: Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to …Step-by-Step Guide to Wiring a Baseboard Heater. With this step-by-step guide, you’ll have the know-how to wire a baseboard heater like a pro. Discover the tools and materials you’ll need, learn how to mount the baseboard heater, and master the art of connecting the wires. Get ready to take control of your heating system with this ...Step 3: Wire The New Thermostat. If your C-wire is ready, you can then wire the new thermostat. Meanwhile, you can also take a picture or make a video of the connections so that you can refer to them during installation. After wiring the thermostat, you can now power it up.I am trying to setup a thermostat and the video instructions are useless. It is written for the “give a man a fish” crowd. They provide no wiring diagram or troubleshooting table, that’s all I need. A thermostat is just a simple switch triggered by a temperature monitor. The furnace does the fan delay on its own, it just needs a run signal. All I need …You may need screws and a screwdriver. Use the built in level to level it up. Connect the Wires: Please see the wiring diagrams in fig 2-5 Connect each wire to its …Step 1: Turn off the power to your HVAC system and remove the back panel of the air handler to access the thermostat wires. Step 2: Trace each wire that is connected to your …🔥 Download our FREE cheat sheet to find 28 tricks that can help you save on your electricity and heating bill each month: https://dashboard.mailerlite.com/f...Step-by-step wiring guide. Wiring a heat pump thermostat can seem intimidating, but with the right tools and knowledge, it can be a straightforward process. Follow these step-by-step instructions to ensure a successful installation. 1. Turn off the power. Before starting any wiring, make sure to turn off the power to your heating and cooling system at the …4. We put together a step by step guide on thermostat wiring. Learn how to do it yourself in the simplest way possible and in all safety. Wiring a thermostat is a simple step by step process …Opening your Honeywell thermostat is a fairly simple and quick task. There are two different kinds of openings that Honeywell thermostats have. They either have a slide or swing op...Take a picture of the wiring on the old thermostat. Remove the face of the old thermostat. For mercury thermostats you will find 2 covers or compartments. The first which holds the mercy and the second where the actual wiring is. You will need the screwdriver to unscrew the two covers to access the wiring. Remove the old thermostat.Attach the thermostat faceplate and turn the power back on. Wiring Details: The thermostat uses 1 wire to control each of your HVAC system’s primary functions, such as heating, cooling, fan, etc. See the diagram below for what each wire controls on your system: Y – Compressor Stage 1 (Cooling) Y2 – Compressor Stage 2 (Cooling) G – FanThorough Guide to Thermostat Wiring. This article provides a step-by-step guide to thermostat wiring - from learning the wires' functions and removing the control panel to re-wiring any brand's device. By. Carolina …O Orange Wire. This wire is typically used to control the reversing valve in a heat pump system. It determines whether the heat pump operates in heating or cooling mode. The O wire will typically go on the O/B terminal of your new thermostat. The B wire on your old trane thermostat is commonly used as the C-wire, which stands for … Advanced Installation Guide 69-2416ES—05 24 About your new thermostat SETUP WIRING ASSISTANCE TROUBLESHOOTING Wiring—Heat Pump Connect wires: Heat Pump 1. Match each labeled wire with same letter on new thermostat. 2. Use a screwdriver to loosen screws, insert wires into hole under screw, then tighten screws until wire is secure. 3. Unused wire: Identify if the wire is also unused at the control panel. If it is not being used, label that unused wire with an empty sticker label. If the wire is being used, label it at the thermostat.; Two wires in one terminal: You may have a dual transformer system.; Incompatible wires: Stranded wires are not compatible. Important: If you don't have a C …Please read all of these instructions carefully before beginning installation. • Label every wire terminal designation on your existing thermostat wiring before ...To install a Honeywell thermostat, remove the old thermostat, label the wires, and install the new thermostat by matching the wires up to the device. Use a screwdriver to pry the o...5.1 Make sure the Nest thermostat is installed. 5.2 If necessary, update the Nest thermostat software. 5.3 Turn off the power at the circuit breaker. 5.4 Open the HVAC equipment cover. 5.5 Choose the appropriate diagram from the list below and follow it to install the Nest Power Connector. 5.6 Install the Nest Power Connector.Coax or coaxial cable is familiar to most people as the wire that you use to connect cable to your television. While it is most commonly used for video applications, it is amazing...Vivint Element CT200 Installation Guide Z-Wave and Power Supply The thermostat’s node type is fixed when it connects to the Z-Wave network; if the C-Wire is not connected and is only battery-powered when connecting to the network, the thermostat will remain a frequent listening routing slave (FLiRS) node until it is removed from the network . When your …Use the New Backplate as a Template. Use the new thermostat’s backplate and a pencil to mark the wall. Using a small bit, drill holes at the marks for the backplate screws. (Install wall anchors ...Nov 29, 2019 · How to Hook Up a Thermostat: Install the mounting plate. Clip a clothespin to the cable so it doesn’t slide down inside the wall cavity; then level the new mounting plate in position and mark the mounting screw holes. Drill 3/16-in. holes, insert drywall anchors and screw the plate to the wall. If the thermostat has back-up batteries, insert ... Sensi Smart Thermostat | INSTALLATION GUIDE 4 Installation Once you have downloaded the Sensi app, and have created an account, you are ready to install the thermostat to your wall and connect it to Wi-Fi. If no thermostats are registered yet, tap the “+” sign to add a thermostat. Then, choose which thermostat you purchased. outside wall behind the thermostat. 4. Run thermostat wiring from indoor unit to location where thermostat will be installed. 5. Drill or make opening through wall for thermostat wiring 3/4” x 3/4” (19mm x 19mm). 6. Pull about three inches (76mm) of thermostat wire through the opening and removed outer thermostat wire jacket. Page 1 Thermostat with RedLINK™ THX321WFS2001W Programmable Thermostat Professional Install Guide Read before installing Package Includes: • T10 Pro Smart Thermostat THX321WF2001W depicted. • UWP™ Mounting System Other models may vary. • Standard Installation Adapter (J-box adapter) Search for local rebates. Thermostat Verdant VX Series Installation Manual. Wireless thermostat with an occupancy sensor (19 pages) Thermostat Verdant V8-BB-7S Instruction Manual. 7-day programmable / non-programmable thermostat with occupancy sensor (13 pages) Thermostat Verdant VX-TW Installation Manual. Vx series (13 pages)Use the New Backplate as a Template. Use the new thermostat’s backplate and a pencil to mark the wall. Using a small bit, drill holes at the marks for the backplate screws. (Install wall anchors ...STEP 5: Connect the wiring and finish installing the thermostat. Next, match the letters on the labeled wires to the letters on the thermostat as you connect the wires to the new thermostat ...When the thermostat goes bad in a Honda CRV, you risk causing serious damage to the engine if you do not replace it. Replacing the thermostat is much cheaper and easier then replac...Read also: Old Trane Thermostat Wiring To New Thermostat [Full Guide] Let’s take a closer look : Thermostat to air handler wiring. The air handler contains the blower that is controlled by the G terminal and the secondary heating (if you have auxiliary or emergency heat) which is controlled by the w2 terminals. So these wires have to go to …12 Jun 2019 ... 4 Wire Thermostat Wiring Color Code · Red Wire = Rh = Power · White Wire = W = Heating Wire · Yellow Wire = Y = Cooling Wire · Green Wir...To begin, gather all the necessary tools and equipment, including a screwdriver, wire stripper, and electrical tape. It’s also important to turn off the power supply to the heating system before starting any work. Next, remove the cover of the existing thermostat by unscrewing the screws that hold it in place.3M-22 Filtrete™ Room Thermostat Wiring Guide. Complete tables for Thermostat Wiring Terminal Notes for the 3M-22 Filtrete Room Thermostat are given here. Our photo just below shows all eleven possible thermostat control wire connection points on this device. (We don't like that sharp crimp in the red wire, nor should you.)Page 1: Installation Guide T9 THERMOSTAT Installation Guide Online Guides honeywellhome.com... Page 2 Read before installing. Included in your box: Installation Guide Screws and anchors T9 Wi-Fi Thermostat Wireless room sensor Wallplate C-Wire Wire labels Adapter (optional) Tools you will need: You may need: Phillips screwdriver …In this step-by-step guide, we will walk you through the process of wiring a 2-wire thermostat for a heat-only system. We will cover all the necessary steps, from identifying the thermostat wires to connecting them to the appropriate terminals on the thermostat. By following these instructions carefully, you can ensure that your thermostat is ...4. We put together a step by step guide on thermostat wiring. Learn how to do it yourself in the simplest way possible and in all safety. Wiring a thermostat is a simple step by step process … Advanced Installation Guide 69-2416ES—05 24 About your new thermostat SETUP WIRING ASSISTANCE TROUBLESHOOTING Wiring—Heat Pump Connect wires: Heat Pump 1. Match each labeled wire with same letter on new thermostat. 2. Use a screwdriver to loosen screws, insert wires into hole under screw, then tighten screws until wire is secure. 3. Guide PM Mode Menu Fan Fan Auto Mode Heat Wake Away HomeS leep Following Schedule ProSeries 33-00587EFS-07 Compatibility • Designed for battery operation (3 x AA batteries) or for 24 VAC power operation (via a “C” or common wire). • Compatible with most single and multi-stage conventional and heat pump systems. • Designed to work …Ensure the plate is level and mark where the screws will go. Pre-drill guide holes before adding sheetrock anchors. Before screwing in and securing the backplate, pull the wires through. Following the photo you took, reconnect the wires–checking twice. Last but not least, put the thermostat cover on and power it up.The way your old thermostat is wired is one of the best guides for how to wire up the Zen thermostat. Correctly identifying the wires that exist ensures ...Drill or make opening through wall for thermostat wiring 3/4” x 3/4” (19mm x 19mm). 6. Pull about three inches (76mm) of thermostat wire through the opening and removed outer thermostat wire jacket. This will help in routing the thermostat wiring to the proper thermostat terminals. NOTE: Thermostat wires and outdoor sensor wire 1-Week Programmable Thermostat Support; 5-2 Day Programmable Thermostat Support; Single-stage Programmable Thermostat Support; Pro 2000 Horizontal Programmable Thermostat Support; T6 Pro Smart Thermostat Support; T5/T5+ Smart Thermostat Support Unused wire: Identify if the wire is also unused at the control panel. If it is not being used, label that unused wire with an empty sticker label. If the wire is being used, label it at the thermostat.; Two wires in one terminal: You may have a dual transformer system.; Incompatible wires: Stranded wires are not compatible. Important: If you don't have a C … Remove your new thermostat from its packaging. Remove your existing thermostat from its mounting plate. Compare the two mounting plates. If they are identical (e.g. you are swapping an Vivint Smart Thermostat V2 for another Vivint Smart Thermostat V2), you may reuse the mounting plate and have no need to touch the wiring (skip to step 7). Open the image of your thermostat wiring on your phone. Using the color of the wires as a guide, compare the wiring on your thermostat to the wiring on your system control board. Look for the wire connectors unknown wires attach to. Note down the label for each wire connected to the control board and thermostat. The most common colors used in thermostat wiring are red, yellow, green, white, blue, and black. Each color represents a specific function, such as power, cooling, heating, fan, or common. Before starting the wiring process, it is important to shut off the power to your HVAC system to avoid any electrical accidents. See Figure 1. Position the UWP on the wall. Level and mark hole positions. See Figure 2. Drill holes at marked positions, and then lightly tap supplied wall anchors into wall using a hammer. ‒ Drill 7/32" holes for drywall. Pull the door open and insert wires through wiring hole of the UWP. See Figure 3. Step 4: Connect the Wires. Run the wires from the thermostat location to the stove, adhering to local building codes regarding wire routing. Attach the wires from the thermostat to the appropriate terminals in the control panel. Commonly, you’ll find two wires to connect—often labeled ‘R’ and ‘W’. ‘R’ generally stands for power ...I am trying to setup a thermostat and the video instructions are useless. It is written for the “give a man a fish” crowd. They provide no wiring diagram or troubleshooting table, that’s all I need. A thermostat is just a simple switch triggered by a temperature monitor. The furnace does the fan delay on its own, it just needs a run signal. All I need …

Nest Thermostat E. Installation Guide (11 pages, 0.5 MB) 3rd gen Nest Learning Thermostat. Installation Guide (12 pages, 0.3 MB) Welcome Guide (2 pages, 0.6 MB) 2nd gen Nest Learning Thermostat. Installation Guide (6 pages, 0.3 MB) Welcome Guide (10 pages, 1.7 MB) 1st gen Nest Learning Thermostat. Installation Guide (7 pages, 0.5 MB) …. Area drain

thermostat wiring guide

RTH2310 Programmable Thermostat 6 1) Match each labeled wire with the terminal having the same letter. 2) Loosen the terminal screws using a screwdriver, insert the wires, then tighten the screws. 3) Push any excess wire back into the wall opening. 5 Connect Wires (typical wiring) 5. Remove jumper if you have both R and Rc wires.Glossary C wire The “C” or common wire brings 24 VAC power to the thermostat from the heating/cooling system. Some mechanical or battery operated thermostats may not have this wire connection. It is necessary for establishing a Wi-Fi connection to your home network. Heat Pump heating/cooling system Heat pumps are used to heat and cool a … Refer to the device’s installation and setup guide for further guidance. Use the following procedure when a soft disable code is present: Confirm proper wiring between all devices such as thermostat and smart hub and cycle power. Go to the menu > settings > advanced settings > view dealer control center. Since 2011, households have been using Google’s Nest thermostat. Reliable and convenient, the Nest thermostat is one of (now) many smart home automation devices. Convinced? Here’s ...Page 154: Wiring Guide - Wired Indoor Sensors ® ® THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE IAQ WITH EIM Wiring guide — Wired Indoor Sensors Use the S1, S2, S3, or S4 terminals for wired sensors. Wiring 2 TR21 sensors (20k ohm) and 1 TR21-A sensor CAUTION (10k ohm) for temperature averaging network. Select 20K in the …• Follow the instructions in the Owner’s Guide included with your heater until prompted to make thermostat connections. TIPS BEFORE YOU BEGIN ELECTRICAL RATINGS 120 vac - 22 amps 1/6 hp 208-240 vac - 22 amps 1/6 hp 277 vac - 18 amps 1/6 hp. 1. WARNING: All electrical work and materials must comply with the National Electric Code … Step-by-step guide on wiring the Honeywell rth6580wf thermostat. The Honeywell rth6580wf thermostat is a popular choice for home heating and cooling control. Installing and wiring this thermostat can be done by following a few simple steps. This guide will walk you through the process of wiring the Honeywell rth6580wf thermostat in your home ... When preparing for your outdoor wood furnace thermostat wiring, having the right tools at hand is essential. Here is a list of the basic tools you’ll need: 1. Screwdriver: A small, flathead screwdriver will help you loosen and tighten the terminal screws on the back of the thermostat. 2.Step 1: Take proper safety precautions — turn off power to your thermostat & HVAC system. Locate the circuit breaker for your HVAC system and turn it off. If you have a separate breaker for your thermostat, turn that off too. Check both your HVAC system and thermostat to ensure that no power is flowing to either of them.Jul 18, 2023 · Mount the New Thermostat Base: Install the base plate of the Emerson thermostat onto the wall. You may need screws and a screwdriver. Use the built in level to level it up. Connect the Wires: Please see the wiring diagrams in fig 2-5 Connect each wire to its corresponding terminal as in the image below: fig 1. Traveling to a casino and uneasy about carrying a lot of cash with you? You can ease that concern by sending your money ahead through a wire transfer. The casinos will welcome your... outside wall behind the thermostat. 4. Run thermostat wiring from indoor unit to location where thermostat will be installed. 5. Drill or make opening through wall for thermostat wiring 3/4” x 3/4” (19mm x 19mm). 6. Pull about three inches (76mm) of thermostat wire through the opening and removed outer thermostat wire jacket. Jul 18, 2023 · Mount the New Thermostat Base: Install the base plate of the Emerson thermostat onto the wall. You may need screws and a screwdriver. Use the built in level to level it up. Connect the Wires: Please see the wiring diagrams in fig 2-5 Connect each wire to its corresponding terminal as in the image below: fig 1. 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. Origin is the control transformer and then the R Terminal. G Terminal is connected to the Green Wire or G Wire - This is for the blower fan in the air handler. G – Green: Fan – this is for the blower in the air handler. R – Red: 24 Volt Power – Your air handler is powered by 110V, but it is converted to 24V for the thermostat. C – Blue: Common wire for continuous 24 volt power from the thermostat to the air handler. E – White (optional): Emergency Heat..

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