Rh + Rc with jumper and Nest Thermostat. I just bought a Nest Thermostat (not "Nest Thermostat E", not "Nest Learning Thermostat"). During the installation process, it says that it's not compatible with my system if I select both Rc and Rh. I know that one is for cooling and the other for heating, and I know that the Nest Thermostat has just a ...Cut to today, I installed an Ecobee thermostat. I noted that the Honeywell had an Rc-Rh jumper that the Ecobee instructions told me to discard. We tested both heat and cool and they're both working, but now the outside fan is going on full and is really loud.* If the old thermostat has separate RC and RH wires, clip the RC/RH jumper on the back of the thermostat. ** Label “B” as “C” only if the old thermostat also had a wire on “O”. If there is no wire on “O” – label the wire “B”. *** On Heat Pump systems with separate W2 and E wires, label both wires W/E (2 wires on one ...Its role in establishing connections, facilitating signal transmission, and enabling multi-stage coordination underscores its significance in ensuring the efficient and reliable operation of your thermostat and HVAC system. The jumper wire on a thermostat is used to connect the R and Rc terminals, allowing the thermostat to receive power …The jumper between Rh and Rc makes total sense, but the blue wire being plugged into Rc does not. If that truly is the same wire from the furnace, it should be in C. On the new thermostat, did you leave the jumper loop in? After that you’ve stumped me and I’d recommend a call to support. They’re pretty sharp and can probably help. Good luck! R : RH and RC single power for HEAT and COOL. In most thermostat wiring hookups the red wire is the power source for the system. or V or VR: RC: RC power for COOL (RH not connected to RC, jumper clip removed) RH: RH power for HEAT (RH not connected to RC, jumper, clip removed) or 4: T: T - outdoor temperature sensor : Not used on the 3M-22: V Set the fan to auto and the system to heat. Then set the thermostat to call for heat by raising the temperature setting. At this point, the red wire will touch the white wire in the thermostat. If the fuse blows at this point, the white wire is shorted and will need to be swapped. In most cases, the heating and cooling system share a single ...Twitter 上的 Google Nest Opineno It Doesn T Matter Whether Your R Wire Goes To Rc Or Rh There S An Internal Jumper Between Them Https Co Aqdejjxqqx. Nest Learning Thermostat Adapter On Twitter We Release The Solution For Boiler Heat Vrv Vrf Pump Air Conditioner Such As Daikin Mitsubishi Fujitsu Dropair Has Ac Control And …Twitter 上的 Google Nest Opineno It Doesn T Matter Whether Your R Wire Goes To Rc Or Rh There S An Internal Jumper Between Them Https Co Aqdejjxqqx. Nest Learning Thermostat Adapter On Twitter We Release The Solution For Boiler Heat Vrv Vrf Pump Air Conditioner Such As Daikin Mitsubishi Fujitsu Dropair Has Ac Control And … Very useful but I have a problem. My Honeywell thermostat use only w/g/y/r.-There’s a jumper between w/y and Yellow wire goes on Y.-Green wire goes on G-White wire goes on O-There’s a jumper between Rc and R and Red wire goes on R. No wire goes on B or C. The thermostat is Honeywell TH3110D1008 and I would like to use a Nest Thermostat. I'm upgrading from a White Rodgers thermostat to Honeywell RTH9580WF. The Honeywell requires a C wire. My old White Rodgers thermostat does not have a C connector. It has a wire from the air handler switchboard to the thermostats RC and is has a jumper to RH. (air handler) - (Thermostat) W - W Y - Y G - G R - RC jumper to RHR : RH and RC single power for HEAT and COOL. In most thermostat wiring hookups the red wire is the power source for the system. or V or VR: RC: RC power for COOL (RH not connected to RC, jumper clip removed) RH: RH power for HEAT (RH not connected to RC, jumper, clip removed) or 4: T: T - outdoor temperature sensor : Not used on the 3M-22: VFeb 22, 2022 · The jumper wire can easily be replaced connecting it to the "R" and "RC" terminals on your thermostat wallplate. If you are unable to find the factory installed jumper, a short piece of wire can be used in its place. Please refer to step 1.7 in the Quick Start Guide. The jumper wire connecting terminals RC and RH are most common, and this jumper wire is not necessary on Sensi thermostat. Sensi thermostats have a built-in RC/RH jumper … Why is there a jumper between R and RC on this thermostat? Effectively there isn’t a second RH wire, although there is an RH terminal. However, the heating still needs to be controlled, so a wire known as a jumper is connected between the RC and the RH terminals so that power gets to the heating control part of the thermostat . For instance with an older type mercury bulb or snap action thermostat and certain digitals, .. when you place a jumper on terminals with the thermostat in the circuit , the voltage can feed back thru the thermostat to energize unexpected items. I have jumped r to y at a furnace and have the condenser as well as heat come on and vice vera.When you have two transformers and connect the Rs you get either 0v or 48v at the other connections - it either doubles or cancels out the standard 24vac. Get a multi-meter and measure before hooking up a Nest E. If 48v then need to swap some wires. Easiest done at one of the transformers. Some freak out at this solution as is easy to make a ...In the world of remote control (RC) enthusiasts, having reliable and precise control over your models is crucial. That’s where the Futaba FAASTest receiver comes in. One of the sta...Nov 12, 2021 · If the black wire on the R terminal goes to the thermostat and only the thermostat, you can safely move it over to the C terminal. The AC and humidistat being hooked up to C is correct. R and C together carry the 24v power that a smart thermostat (and some programmable models) use for power. Right now the thermostat isn't getting any power. MY OLD Thermostat HAS TWO WIRES ONLY RED AND WHITE BUT HAS A JUMPER WIRE RH TO RC. M Y NEW ONE HAS NO RH. HAS A RC, R, - Answered by a verified HVAC Technician. ... Honeywell RTH6350/RTH6450 and the old thermostat (Carrier) has W O G R C Y connections. this does not match the honeywell model.Leave metal jumper in place, connecting R & Rc terminals. If your old thermostat had both V and VR wires, stop now and contact a qualified contractor for help. If your old thermostat had separate O and B wires, wrap the B wire in electrical tape and do not connect. If your old thermostat had Y1, W1 and W2 wires, stop now and contact aThe jumper wire connecting terminals RC and RH are most common, and this jumper wire is not necessary on Sensi thermostat. Sensi thermostats have a built-in RC/RH jumper …We would like to show you a description here but the site won’t allow us.Use built-in jumper (R Slider Tab) to differentiate between one or two transformer systems. If there is only one R wire, and it is connected to the R, Rc, or RH terminal, set the slider …If the black wire on the R terminal goes to the thermostat and only the thermostat, you can safely move it over to the C terminal. The AC and humidistat being hooked up to C is correct. R and C together carry the 24v power that a smart thermostat (and some programmable models) use for power. Right now the thermostat isn't getting …If you’re in search of great deals on furniture, appliances, electronics, and more, look no further than the RC Willey Clearance Outlet. With its wide selection of discounted items...Thermostat Jumper Wire Between Rh & Rc Terminals - YouTube. Jersey Mike HVAC. 11.1K subscribers. Subscribed. 244. 37K views 1 year ago Thermostat …If your old thermostat had both R and RH wires, remove metal jumper. Connect the R wire to the RC terminal, and the RH wire to the R terminal. Remove metal jumper connecting R and RC only if you must connect both R and RC. Alternate wiring key (conventional system) 2 3 1Red to the thermostat RH or thermostat RC terminal with a jumper wire between thermostat RH and thermostat RC. Or Red to the thermostat R terminal which is shared with both the heating and cooling. It has an internal jumper built into the sub-base.If labels do not match letters on the thermostat, check “Alternate Wiring” on page 6 and connect to terminal as shown here (see notes, below). Thermostat does not work on Heat Pumps with auxiliary/backup heat. W/ Aux Not Used M32714 Remove metal jumper if you have both R and Rc wires. M32732 SCREW INSERT WIRES AND TIGHTEN SCREWS WIRE HOLE ...Received 4,025 Upvotes on 3,611 Posts. You have four wires to your thermostat..... White - W. Green - G. Yellow - Y. Red - R and Rc. You will need more wires to get a C connection to your thermostat. If you use the Ecobee..... it should come with a PEK extender to generate a C connection. Upvote.My current thermostat has two wires, a white wire connected to W and a red wire connected R, there is a jumper between R and RC. There is also a third unused green wire in the wall. The control panel for my furnace is a Honeywell Type L8124A, C L8151A (Triple Aquastat Relay).R : RH and RC single power for HEAT and COOL. In most thermostat wiring hookups the red wire is the power source for the system. or V or VR: RC: RC power for COOL (RH not connected to RC, jumper clip removed) RH: RH power for HEAT (RH not connected to RC, jumper, clip removed) or 4: T: T - outdoor temperature sensor : Not used on the 3M-22: VHowever if you only have wire R wire, you are going to connect it to one of the terminals and put a jumper between them. For Honeywell pro series thermostat thermostats, If there is only one R wire, and it is connected to the R, Rc, or RH terminal, set the slider tap to the up position (1 wire).The thermostat controls two systems; heat and cool. The heating system is hydronic, with 1 boiler and 3 zones controlled by a Taco ZVC404 zone valve controller. The Air Conditioner is a typical York split system with the control wiring on the air handler inside. The thermostat has "R" and "RC" terminals, for the 24VAC wiring from the heat and A ...Received 4,025 Upvotes on 3,611 Posts. You have four wires to your thermostat..... White - W. Green - G. Yellow - Y. Red - R and Rc. You will need more wires to get a C connection to your thermostat. If you use the Ecobee..... it should come with a PEK extender to generate a C connection. Upvote.Twitter 上的 Google Nest Opineno It Doesn T Matter Whether Your R Wire Goes To Rc Or Rh There S An Internal Jumper Between Them Https Co Aqdejjxqqx. Nest Learning Thermostat Adapter On Twitter We Release The Solution For Boiler Heat Vrv Vrf Pump Air Conditioner Such As Daikin Mitsubishi Fujitsu Dropair Has Ac Control And … Answer. Showing 1-7 of 7 answers. Mine old thermostat had a jumper between RC and RH and the wall wire marked R was connected to these. After mounting the new UWP plate to the wall, be sure that the switch selecting either 1 wire or 2 wire is solidly in the correct position. (1 wire position for mine) Mine looked like it was set to 1 wire, but ... Radio controlled (RC) airplanes are a great way to enjoy the thrill of flying without having to leave the ground. They are a popular hobby among both adults and children, providing...OLD Thermostat: G – G wire, W – W wire, Y – Y Wire, Rc + Rh (R wire with jumper between Rc and Rh) New Thermostat : needs a C wire. Due to old heater panel, I could not find the C wire to hook up. So, hooked up external transformer and connected to C and Rc. Removed jumper between Rc and Rh as suggested by Bill Lee below. Heater works.Configuration. Dumb question. my old thermostat jumped Rh/Rc. I know that the Ecobee it's not necessary to jumper that as the thermostat does it automatically.. my question is that when it states we have detected a wire connected to Rc but not Rh. Do I answer that yes that's correct and the ecobee will make the jumper.Are you seeking spiritual enlightenment and deep biblical insights? Look no further than RC Sproul’s audio sermons. For decades, Dr. RC Sproul captivated audiences with his profoun...The thermostat in my house was wired to only run the air conditioning (red wire was going into Rc). I have seen thermostat installations where a jumper is added between the Rc and the R so the thermostat can run both the heater and the a/c. So I added a jumper between the two. When I did, I set the thermostat to 'Heat' mode and the heater came on.I hooked the "R" from the furnace and hooked it to the "Rc" on the thermostat base. Nothing on the thermostat. (Hooked up the other way around gave me heat but no AC). So I said my prayers and found the jumper. I jumped "R" and "Rc" on the thermostat base and EVERYTHING WORKS. I have AC, manual over ride on the fan and heat.I am installing a new hunter 44668 thermostat, replacing a honeywell th5000. the old wiring had R, Y, C, W, and G. the new one has Y1, RH, RC1, RC, Y/O, W/B, and G. any ideas? … read more Rick MatherIn most cases, the Rc wire is used for cooling systems, while the Rh wire is used for heating systems. The Rc stands for “red cooling,” and it powers the cooling system. On the other hand, the Rh stands for “red heating,” and it powers the heating system. However, it is important to note that there is no standard color coding for these ... Do not jumper any R wires! Rh. If you don’t have an Rc wire, Rh serves as both the heating and cooling power wire. If you only have one R wire (That includes R, Rc, and Rh), you’ll insert it into the Rc terminal on your ecobee. With dual-transformer systems you’ll have two R wires—one from the cooling transformer (Rc) and one from the ... Sensi thermostat has a built-in RC/RH jumper wire on the back of the thermostat face plate. Clip the RC/RH jumper wire on the Sensi thermostat if you have two separate wires (one running to RH and the other to RC) on your old thermostat that are coming from the wall. This indicates you have a two-transformer system.Motion RC is a leading provider of remote-controlled (RC) aircraft and accessories. With a wide range of products and a commitment to quality, Motion RC has become a go-to destinat...A how-to guide for removing a thermostat jumper wire before installing your Sensi™ smart thermostat.Hook up the wiring the way you listed it, but leave the jumper between W and Y out. Put the white wire into O on the Ecobee. I've seen these setups many times. leave the jumper out, treat the yellow wire to Y, and the white wire to O/B. report back if its working correctly. The W and Y jumper is there because you do not have auxiliary back up ...If you have one R wire, connect it to RH at the iDevices Thermostat and leave the blue jumper in-place to RC. If you have two R wires, connect RC to RC and R/RH to RH and …Rh or Rc, old system had a jumper. Thermostat. So I just installed the nest learning 3rd generation thermostat. When I took the old thermostat off I noticed the red wire was ran into the Rh slot, but was then jumped over to Rc. When I installed the Nest Learning Thermostat, I noticed that I cannot use a jumper.In newer thermostat you would normally have the RC or RH terminal. You may have to connect the R wire to any of the two terminals. However may need to put a jumper between the RC and RH terminals with an exception of Nest thermostats which dont require jumping wires. W White Wire. This wire is used to control the heating system.Thermostat Jumper Wire Between Rh & Rc Terminals - YouTube. Jersey Mike HVAC. 11.1K subscribers. Subscribed. 244. 37K views 1 year ago Thermostat Wiring. Why does the thermostat have a...R wire power from the transformer (put a jumper betwen Rc and Rh if you have only one R wire) If your thermostat has only these four wire, you probably have a first stage air conditioner with a heating system. fig 3. Read also: White Rodgers thermostat wiring. 5 wire emerson thermostat wiring diagramNote: The Nest thermostat does not require a jumper wire between Rh and Rc. Don’t connect any jumper wires to Nest. Your single R wire can go into either Rc or Rh. Use these stickers to label the existing wires before removing your old thermostat. 4. Disconnect wires Disconnect the labeled wires from the old thermostat base andWhen it comes to designing your living room, finding the right furniture is crucial. RC Willey offers a wide range of living room furniture options that are not only stylish but al...remove metal jumper. Connect the R wire to the Rc terminal, and the RH wire to the R terminal. If your old thermostat had only 1 C or C1 wire, connect it to the C terminal. If your old thermostat had 2 C or C1 wires, wrap each separately with electrical tape and do not connect them. Wiring—conventional system Alternate wiring (conventional ...In HVAC systems where the RC and RH wires are combined and connected to the R terminal, you may notice a small metal bridge or wire between the RC and RH terminals on the control board. This bridge is known as a jumper and allows the thermostat to send signals for both heating and cooling functions through a single wire.Its role in establishing connections, facilitating signal transmission, and enabling multi-stage coordination underscores its significance in ensuring the efficient and reliable operation of your thermostat and HVAC system. The jumper wire on a thermostat is used to connect the R and Rc terminals, allowing the thermostat to receive power …R: The R wire is the power wire for your heating and cooling system. If you only have one R wire (no Rh or Rc), you can connect your R wire to either Rc or Rh on the Nest thermostat. Note: Don't connect any Jumper wires to the Nest thermostat. Rh: If you don’t have an Rc wire, the Rh wire is the power wire for both your heating and cooling ...For these systems, there is only one 24VAC “R” wire and it can connect to either the RC or RH terminal on the thermostat. The thermostat is supplied with an RC-RH jumper installed. Do not remove the jumper for common transformer HVAC systems. If you have additional wires for 2 stage systems (W2, Y2), Continue wiring as shown.The RC wire, on the other hand, refers to “red cooling”. It’s the same with the RH wire in that it powers the thermostat. For the RC, it powers the cooling system. What does R and RC mean on thermostat? RC: The RC terminal is the 24-volt cooling power supply. RH: The RH terminal is the 24-volt heating power supply. (Note: The RC and RH ...Do not jumper any R wires! Rh. If you don’t have an Rc wire, Rh serves as both the heating and cooling power wire. If you only have one R wire (That includes R, Rc, and Rh), you’ll insert it into the Rc terminal on your ecobee. With dual-transformer systems you’ll have two R wires—one from the cooling transformer (Rc) and one from the ...Thermostat jumper with R. Important: If using a Smart Thermostat HD, and the old system has one R wire, connect it to the RH terminal on the Smart Thermostat HD, as RH is required for this thermostat. If there are two R wires, then RC should be connected to RC, and RH should be connected to RH. RH RH Note: Use Thermostat …If your old thermostat had both R and RH wires, remove metal jumper. Connect the R wire to the RC terminal, and the RH wire to the R terminal. Remove metal jumper connecting R and RC only if you must connect both R and RC. Alternate wiring key (conventional system) 2 3 1 Y2 R M 4 V Y1 RH H F W1 W2 G W Y R RC Y2 W2 G W C YR RC MCR33885 ...Does the R wire go to RC or RH? The placement of the R wire, also known as the power or 24-volt wire, depends on the specific HVAC system and thermostat setup. In most cases, …We would like to show you a description here but the site won’t allow us.Does The Red Wire Go To R Or RC On Thermostat?-----James Webb (2022, August 6.) Does the red wire go to R or RC on thermostat? WHYS.videoCopyright 20...The thermostat you see on your air conditioning unit is wired to a furnace. This furnace houses the heating and cooling systems. Specific wires connect the thermostat and the heater to operate those systems. This is where you’ll see the RH and the RC wires. Usually, these wires are powered with 24 volts. Even though you won’t get any ...The word “jumper” when used to mean a sweater comes from an obsolete term for a large, loose men’s jacket called a jump. “Jumper” is a term mainly used in England, while the term “...When it comes to staying warm and stylish during the chilly winter months, there’s no better option than British wool jumpers. Not only are they known for their exceptional quality...If your old thermostat had both R and RH wires, remove metal jumper. Connect the R wire to the RC terminal, and the RH wire to the R terminal. Remove metal jumper connecting R and RC only if you must connect both R and RC. Alternate wiring key (conventional system) 2 3 1. 69-2718EF—03 18The c-wire is important because it supplies your thermostat with 24v power. A conventional heating system will typically have 5 wires that you need to wiring as follows: Honeywell rth9585wf wiring diagram definitions: R————the R terminal. C———-the C terminal. G——–G terminal. W——-the W-O/B.do i need to remove the jumper between the rc and r terminals if im using the t-stat for a hot water boiler and a seperate forced air a/c system. it is a honeywell focus pro 6000 t-stat. Submitted: 11 years ago.There is a jumper between the R and Rc terminal. When trying to setup my nest thermostat I've put the R wire into both the Rh and Rc terminals on separate occasions, …If wires are to be connected to both Rc and R, loosen the Rc and R screw terminals and remove the metal jumper wire. 4. If only one of the terminals, Rc or R, is to be connected, leave the metal jumper wire in place. METAL JUMPER WIRE M22295 SCREW TERMINALS TERMINAL BLOCK LETTER DESIGNATIONS R RC Y G C O/B WALLPLATEEffectively there isn’t a second RH wire, although there is an RH terminal. However, the heating still needs to be controlled, so a wire known as a jumper is connected between the RC and the RH terminals so that power gets to the heating control part of the thermostat. Does RH go to R or RC? Some thermostats have a jumper switch, some …Answer. Showing 1-7 of 7 answers. Mine old thermostat had a jumper between RC and RH and the wall wire marked R was connected to these. After mounting the new UWP plate to the wall, be sure that the switch selecting either 1 wire or 2 wire is solidly in the correct position. (1 wire position for mine) Mine looked like it was set to 1 wire, but ...If your old thermostat had both R and RH wires, remove metal jumper. Connect the R wire to the RC terminal, and the RH wire to the R terminal. Remove metal jumper connecting R and RC only if you must connect both R and RC. Alternate wiring key (conventional system) 2 3 1 Y2 R M 4 V Y1 RH H F W1 W2 G W Y R RC Y2 W2 G W C YR RC MCR33885 ...R and Rc stay jumpered if a jumper came with the thermostat. Use only one R terminal, given that u don't have a two transformer system. if u did, you would have a separate Rc wire. These add a wire kits allow you to put two signals over one wire. Has nothing to do with what was talked about in the video -> Using an external transformer.The Sensi app provides all the installation instructions for wiring your new thermostat. Download the Sensi app on your smart phone or tablet. Create an account or sign in. Tap the + sign. Tap your Sensi product. Tap " New Installation ". Tap “ Not Mounted ”. Follow the in-app setup and wiring instructions.The Sensi app provides all the installation instructions for wiring your new thermostat. Download the Sensi app on your smart phone or tablet. Create an account or sign in. Tap the + sign. Tap your Sensi product. Tap " New Installation ". Tap “ Not Mounted ”. Follow the in-app setup and wiring instructions.
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Jumper T18 Replacement Parts; Jumper T16 Replacement Parts; RadioMaster Tx8 Replacement Parts; External Remote Controller Modules; ... trust Grayson Hobby for …The thermostat operates between 20-30 VAC, "supplied" to the R/RC terminals and "returning" through the C terminal. A C wire, connected to C on the equipment, is required for the thermostat to power itself. Verify the furnace / air handler door is closed, the power switch is on, and the breakers are on. Confirm you have a C … Rh + Rc with jumper and Nest Thermostat. I just bought a Nest Thermostat (not "Nest Thermostat E", not "Nest Learning Thermostat"). During the installation process, it says that it's not compatible with my system if I select both Rc and Rh. I know that one is for cooling and the other for heating, and I know that the Nest Thermostat has just a ... Hi everyone. I am trying to install an Amazon Smart Themostat but I’m unsure if the wiring diagram they recommend is correct. I put G, O/B, C in same terminal. Y1 now in Y and RC now in R (as recommended by Amazon). The wire I’m unsure about is the “W” wire. The old thermostat had it in the “W1/E/W3” hole and Amazon says to now put ...The RC and RH terminals are Red Heat and Red Cool, a long time ago General Electric made HVAC systems with 2 transformers, 1 for Cool and 1 for Heat, thus the RH and RC terminals, thermostats come with a jumper wire between RC and RH so modern single transformer systems can run their Red thermostat wire to either RC or …R wire - Power [R+Rc joined by jumper] Y wire - Compressor contactor C wire - 24VAC common O/B wire - Changeover valve G wire - Fan relay. 2H/1C Heat Pump System: NOTE: If dual fuel, TH6320WF (Trade FocusPRO WiFi 6000 only) R wire - Power [R+Rc joined by jumper] Y wire - Compressor contactor C wire - 24VAC common O/B wire - Changeover valveLeave metal jumper between R and RC terminals in place. Insert a quick reference card. Fold a quick reference card along score lines, and slide it into the slot on the back of the thermostat. Attach thermostat to wallplate. Align the thermostat to the wallplate and then snap it into place 10 Switch the heating/cooling system ON. Important!R and Rc stay jumpered if a jumper came with the thermostat. Use only one R terminal, given that u don't have a two transformer system. if u did, you would have a separate Rc wire. These add a wire kits allow you to put two signals over one wire. Has nothing to do with what was talked about in the video -> Using an external transformer.Received 4,025 Upvotes on 3,611 Posts. You have four wires to your thermostat..... White - W. Green - G. Yellow - Y. Red - R and Rc. You will need more wires to get a C connection to your thermostat. If you use the Ecobee..... it should come with a PEK extender to generate a C connection. Upvote.Typically, the jumper wire is a small, insulated piece of wire that is strategically positioned to link specific terminals on the thermostat. It serves as a …dwkeith. • 5 yr. ago. Yep, your ‘R‘ (sometimes labeled ‘Rh‘) is jumped to ‘Rc‘. According to Nest’s installation article you simply ignore ‘Rc‘. (I would tape it or cap it) This will work …If your old thermostat had both R and RH wires, remove metal jumper. Connect the R wire to the RC terminal, and the RH wire to the R terminal. Remove metal jumper connecting R and RC only if you must connect both R and RC. Alternate wiring key (conventional system) 2 3 1The most common wiring for home thermostats is 5-wire, but 6-wire and 7-wire thermostat cables (wires wrapped inside a plastic sheathing) are also possible. In any case, it's ok to have one or more unused wires. For example, you may have a 5-wire cable but only three of the five wires connect to your old thermostat. Learning Thermostat Install - R/Rc Jumper. Having some trouble installing my new learning thermostat. I've got an older thermostat with 4 wires, a Y1, G, W1, and R. There is a jumper between the R and Rc terminal. When trying to setup my nest thermostat I've put the R wire into both the Rh and Rc terminals on separate occasions, but in either ... The OLD thermostat had five wires connected to it at the following terminals - Y, R, C, G, and W. See picture below: The instruction manual for the RTH2510 tells me to connect wires to the following terminals - Y, R, G, and W. It doesn't tell me what to do with the remaining C wire. Additionally, there is no C wire terminal on the new ....