The wires going to the T-stat I replaced were configured like so: My final, working configuration for the Honeywell RTH6350 thermostat is: I had some trouble getting through to Honeywell support, but I finally succeeded in communicating with someone via the live chat they offer at the bottom of their help and support page. In this sketch from a 1949 Honey Heating Control Handbook the thermostat has been satisfied (both contacts are open) and the system is not calling for heat. . Even when the wire itself is not easy to decode or see color, you should see an r and a w on the wiring base. Wrap bare end of wire with electrical tape. and short other wires.
The most common configuration is five wires. I hooked it up on the control board. Where zone valves are used, an end switch closes to turn on the circulator (a logical inclusive OR function with the other zone valves) when the zone valve opens to allow hot water to flow. thermostats. The Honeywell RTH6350 uses the following wire connections: Watch out: if your wires do not match the above see several alternative wiring installation hookups on both of the thermostat wiring manuals given just below. Your [Honeywell thermostat] model number will begin with the letters, T, TH, RTH, C, or CT and is on the back of the thermostat.[5]. Select Standard Efficiency Forced Air (default) or High Efficiency Forced Air. Here is a copy of the HONEYWELL RTH2300/RTH221 SERIES PROGRAMMABLE THERMOSTAT OWNERS MANUAL [PDF]. The Yellow wire causes the valve to close when the system is satisfied. Tried for hours looking up diagrams, from old units to new thermostats. We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. I am willing to supply an additional wire to supply continuous power to the thermostat. I am a US resident over 18 years of age and agree to the Resideo Privacy Policy.*. Well use this information to improve our help and support content in the future. In a traditional hot water heating system that does not use the Azel i-Link controller, the first thermostat is wired directly to an aquastat that controls the first zone; the second two thermostats are wired to individual circulator relays (if individual circulator pumps are used) or to individual zone valves (if a single circulator runs the whole system). The jumper may also be a wire connecting the two terminals. However, some lift from the bottom and lever off, and others have a locking tab. Of the Y, Y1, and Y2 wires, Y or Y1 go to the Y terminal and Y2 to the Y2 terminal. The thermostat uses one wire to control the primary functions of your HVAC system, such as heating, cooling, and fan. The "coil" shown may be a magnetic coil that pulls in the armature of the No. E Emergency Heat
Connect the red wire t. Also see these other HONEYWELLT87 WALL THERMOSTAT WIRING DIAGRAMS - Honeywell Wall T87-F type Thermostats for sketches and drawings of Honeywell thermostat wiring hookups. A thorough list of diagnostic steps is at NO HEAT - BOILER, On 2020-11-19 If you have one wire even if its labeled RC it goes into the R terminal, setting the jumper connecting terminals R and RC in place. These are spst switch type controls (such as heat-only). At left the thermostat wiring diagram illustrates the typical wiring connections when installing a Honeywell RTH2300 (or similar) programmable room thermostat. The [Honeywell 5-2 Day Programmable Thermostat - RTH2300B1012] thermostat cannot be used if your old thermostat had [and used] We purchased a 30 yr old home that has central AC (outside and attic), and a combo furnace/hot water on demand (garage), each with it's own thermostat. Hi, I have a setup that I think is probably common, at least in the northeast, but that I found very difficult to get straight. 
If you have separate O and B wires, tape off the B wire so it doesnt make contact and connect the O wire to the O/B terminal. Am I wrong?Roger.
L/A A Input for heat pump fault Select 1 Stage (default) or 2 Stages.
offers different choices on the following screens. are connected: Y wire only (1 stage) or Y and Y2.. In the Honeywell TH9320 installation manual, as I read the wiring instructions they expect the blue wire to be operating a reversing valve - for heat pumps. I have it set to auto.
I'm not sure if I understand your situation exactly correctly, but it sounds as if your zone valves are models that are normally open and that requires signal to close them.
2.
The heat set up is what is confusing me. On 2021-03-24 Thermostat Wiring Connections for typical Two-Wire Honeywell T87-F type Wall Thermostats. Ask your heating service tech to do the following: Especially that's true at a heat-only TT. Next, remove your existing thermostat from the wall plate. I hooked my old source1 back up and it is fine. Rc 24vac (Cooling transformer) 
the tstat read 73, and stayed running. Below are alternative wiring connections for the Honeywell RTH3100C thermostat along with an explanation. And in setup you are to "In Setup, set changeover valve to O or B.". Usually the R (red) wire or Rc wire is the power source to the thermostat and carries 24VAC. Only way to turn off the blower is to disconnect the tstat or unplug the blower. THERMOSTAT WIRING WHITE RODGERS S Indoor and Outdoor Wired Sensors If you have a C wire, place it into the C terminal on your wall plate. Now, as soon as i connect the tstat, the blower kicks on. If the boiler runs there's a problem with thermostat wiring or possibly the thermostat itself. THERMOSTAT WIRING HONEYWELL at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice. (this is the AC). This question was posted originally at THERMOSTAT CALIBRATION. cooling changeover valve (default) or heating changeover valve. the thermostat. (only 2 wires found in-use at the wall thermostat), Honeywell thermostat T87F type models include the Super Tradeline T87F1959 (replaces the T26A1433 and T87C1252), T87F1867, T87F2816, T87F2824, T87F2873. Monday through Friday:9am to 8pm CDT Monday through Friday: The white wire opens the valve when the system makes a heat call. Identify and label each of the existing thermostat wires by using not the wire colors (someone could have made a wire color error and violated convention) but rather, identify each existing thermostat wire by noting the letter next to the old thermostat wiring block terminals where each wire was connected to a screw. On 2018-12-05 by rogerlange206@gmail.com, I purchased a Honeywell thermostat for home, model: RTH8500. Referring to your photo, remove and label each wire. Watch out: since here we are focusing on connections, I am leaving out some important procedure and safety details like removing and taping each wire end to avoid shorting, etc. When heat is called for, the R&Y open and the R & W (white wire) closes. C Common If you see wires connected to terminals labeled G1 G2 G3, you need a thermostat capable of controlling multiple fan speeds; none of our retail thermostats are compatible with this system type. No issues. Then jumper the two TT terminals - at that same control. Then over at ZONE VALVE MANUALS & WIRING you'll find White Rodgers zone valve wiring manuals including the WR 1311. have O wire. Just cap off the unused wire. [Click any image or thermostat wiring schematic to see an enlarged, detailed version]. Note: appearance of your Comment below may be delayed: if your comment contains an image, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. Both thermostats are wired into the hydronic valve. we give the use of the O or "orange" wire.The new thermostat ought to include a wiring instruction that tells you where that wire goes on their model. current wire configurations are Blue to C, Orange to O, Brown to W/E, White to W2,(with a jumper connecting the W/E and W2) Red to R, Green to G, and Yellow to Y. on my new Honeywell RTH9585, I need help with where the White and Brown go, and do I leave the jumper in the new Honeywell tstat? You can re-connect the wiring after mounting the new thermostats wall plate. 1. My father has a gas furnace a outside air conditioner + a 2 stage blower fan,the terminals on the old thermostat are r-red wire,w-white,y-orange, g-green + a -black(confused over this wire). 2 is a line voltage contactor. The wiring was the same W to white, Y-yellow, and G- green. 9am to 6pm CDT We are trying to replace a Dometic Duo Therm Thermostat with a Honeywell RTH6360 in our Motorhome. This second set of contacts is typically used to operate a cooling or air conditioning system but may also be used to operate other controls or valves in some heating systems. Or see THERMOSTAT WIRING HONEYWELL FAQs - questions and answers posted originally on this page. If you are unsure, note which wires you have connected. The thermostat simply needs to act as a SPDT switch to supply power to the motor to open and close the valve. Copyright 2022 Resideo Technologies, Inc. Honeywell Home is a trademark of Honeywell International Inc. used under license to Resideo Technologies, Inc. Wrap the bare metal end You should typically see an 18-gauge solid core wire. Apologies for the delay. Saturday and Sunday I don't understand the B connected to the transformer on the one end, but loose on the other.It would seem wrong, but the system works. Here is a copy of the Honeywell RTH2300/RTH221 Series Programmable Thermostat Owners Manual [PDF]. Our Comment Box is provided by Countable Web Productions countable.ca, Click to Show or Hide Citations & References, HONEYWELL SERIES 20 WALL THERMOSTAT WIRING, HONEYWELL 5-2 DAY PROGRAMMABLE THERMOSTAT - RTH2300B1012 WIRING, HONEYWELL FAN COIL THERMOSTAT T6196 MANUAL, HONEYWELL T87-F type 2-WIRE WALL THERMOSTAT WIRING, HONEYWELL T87-F type 3-WIRE WALL THERMOSTAT WIRING, HONEYWELL T87 WALL THERMOSTAT WIRING DIAGRAMS, OTHER, 2-Wire Gas Heat Honeywell Thermostat Wiring Diagram, 2-Wire Oil Heat Honeywell Thermostat Wiring Diagram, 3-Wire High Limit Honeywell T87F Thermostat wiring diagram, 3-Wire SPDT Honeywell T87F Thermostat wiring diagram, 4-Wire Honeywell RTH2300 Programmable Thermostat Wiring diagrams, HONEYWELL CT87N / CT87K ROUND THERMOSTAT OWNERS MANUAL, Honeywell CT87N / CT87K THERMOSTAT OWNER'S MANUAL, Honeywell CT97N Easy-to-See THERMOSTAT OWNER'S MANUAL, Honeywell CT87A,B,J Round Thermostat Low Voltage (15 to 30 VAC) Thermostat and Mounting Hardware Installation Instructions, Honeywell FocusPRO TH6110D PROGRAMMABLE THERMOSTAT INSTALLATION GUIDE, Honeywell FocusPRO TH6110D / TH6220D OPERATING MANUAL, HONEYWELL Lyric Round WI-FI THERMOSTAT INSTALLATION GUIDE, Honeywell T6 Pro PROGRAMMABLE THERMOSTAT INSTALLATION INSTRUCTIONS, Honeywell T87F Thermostat PRODUCT DATA SHEET & CIRCUIT DIAGRAMS, HONEYWELL T8775C1005/U THERMOSTAT INSTALLATION & WIRING MANUAL, HONEYWELL TB7100A1000 MultiPRO Monday through Friday: 9am - 8pm CDT Homeowner Support We just want to wire up for the Gas Furnace heating. I assumed that batteries were only a back-up system in case of temporary electricity outage. If your O or B terminal shares a label with another wire typically W identify whether you have a heat pump system or not. I currently have American Standard heat pumps with propane furnaces' as back up. of each of these wires with electrical tape, so it cannot touch Take a picture of your wiring. Some of the controls discussed in detail here include the, V155A = Series 10, V435A = Series 40, V575A = Series 50, V835A = Series 80. Message us on Twitter for help with our products. G Fan we have a rth2300/rth221 thermostat.only for oil heat furnace.have 3 wires from wall,black,white,red.hot water baseboard heat.problem:i turn to 62 at night.outside temp. Thermostats may have a jumper switch, metal staple, or plug.
by danjoefriedman (mod), @wayne, does this help Try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly. O/B Reversing valve for Heat Pump systems Follow the instructions below to guide you through basic wiring: THERMOSTAT WIRE CONNECTIONS - 8-WIRE Black, Red, White, Yellow, Green, Orange, Brown, Blue. First, did you confirm what the blue wire is doing in your wiring harness?
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Identify and label the wires that are connected as. R 24vac (Heating transformer) The thermostat I was replacing was an old White-Rogers mercury switch. any two of the following wires: R, RC, RH, 4 and V. 3. But with multiple zone heat, you should expect to provide a thermostat for each individual zone - else they're not heating zones at all. I have added a photo of the Duo Therm Wiring. I have an old 2 wire that has no markings. Be sure that you label the wires before disconnecting them from the old thermostat, or if you are installing new equipment, identify the incoming wires from the equipment terminals and its manual. If you have a Trane model thermostat and a wire labeled X or B, refer to your thermostat manual. I turned the temp up to 80 in my house. C wire adapters are available here. Locate any unconnected wire labeled W or W1. Red is 24 volts from one side of the transformer that supplies the power to the valve. Speak directly with an agent for help with our products. I have a 3 wire boiler heat system Red,White, Green but was only using red,and White I bought the honeywell RTH5160 Series do I need connect the Green wire, Forgot to mention it's a non programmable thermostat RTH5160. And the company makes clear that their controller is compatible with standard thermostats: ALL - controls are compatible with 2, 3 or 4 wire type For a table of wiring connections for this thermostat also see. Saturday and Sunday: Understanding the wiring details of series 10 controls and circuits can help us diagnose heating and cooling system operating snafus. heating system - @Vicki, C / X / B - do not connect - tape off bare wire ends, Y2 wire to Y2 terminal on the thermostat wiring bus bar, Rh, 4 or V wire to R terminal, after removing factory-installed metal jumper between R and Rc, Rc or R wire to Rc terminal, after removing factory-installed metal jumper between R and Rc, the Red wire is attached to 4, on the White Rodgers Thermostat, White wire broken: thermostat cannot pull in the relay and cannot hold it open - after a momentary shorting of the W-B terminals at the relay or valve, Blue wire broken: thermostat cannot pull in the relay or valve, but once the relay is forced in (closed) the circuit can hold, Red wire broken (or a loose heater plug screw) causes short cycling on the blue contact - single point operation, White wire shorted to the blue wire: relay or valve stays "on" unless all electrical power is shut off by the limit control switch, by disconnecting a wire at the low voltage transformer, or by turning off power to the system, White wire shorted to the red wire: thermostat can start the heater's burner but can't stop it, Red wire shorted to blue wire: short cycling (single pointing) on the white contacts alone, White & blue wires swapped incorrectly: causes short cycling on the blue contact, Blue and red wires swapped: short cycling on the white contact, Red and white wires swapped: normal operation except that the heater is effective too quickly - resulting in short on-cycles and inefficient operation, [5] Honeywell Controls, the company wants you to use their contact form at this web page: http://www51.honeywell.com/honeywell/contact-support/contact-us.html, Honeywell product model numbers & instruction Manuals: see http://yourhome.honeywell.com/home/Applications/FindYourModelNumber.aspx, [12] "Heating Control Handbook for the Installer and Service Man,Oil Burner, Gas Burner and Stoker Controls", Honeywell Corporation, March 1949 [copy on file as HoneywellControlsHandbookSA1399-2-1949.pdf] . I went with the honewell TH9320. A second set of contacts will make or close on temperature rise. If we recommend placing a wire in a terminal, do not move it to another terminal if we address it later in the guide. Old thermostat has an O wire, new thermostat does have O port. What should I do? Do not use B wire if you already
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