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Thanks for taking a look. So the camera didn’t catch the 1on the aqua stat it actually is reading 178.STEVEusaPA said:Who put the primary on sideways? Plenty of other problems? Why is the aquastat reading 78 and the boiler gauge is over 170. And your pressure is over 20 psi.
Hey yes so the transformer has a R and a C.EBEBRATT-Ed said:To which control are your thermostat wires connected? Do they go to T & T on the Hydrolevel aquastat? Your last picture on the bottom shows a transformer. Where do the transformer wires go? I see some zone valves do you have a zone valve relay?
This is what I’m trying to install to make my nest thermostats workHVACNUT said:The last pic of the transformer is where the Common is. The terminals should be labeled R and C.
Edward Young Retired
After you make that expensive repair and you still have the same problem, What will you check next?
Ok makes sense. The red wire goes to the R terminal on thermostat and connects to a yellow wire on the zone valve. The zone valve has one yellow connected to thermostat R and a second yellow connected to the red wire that leads to the C on the transformer. The zone valve has one red wire connected to the white wire that goes to one of the T terminals in the Hydrostat and a second red wire connected to a red wire that connects to the second T terminal…..EdTheHeaterMan said:OK... you have zone valves that are connected to that transformer. but the red wire is connected to C and the white wire is connected to R. This may be a problem. Electric is colorblind so it may not be a problem. As long as R from the transformer is connected to the R on the old thermostat (even if the wire is white) then the C from the transformer can be used as the common. The problem you are having is that there are several ways to wire up those honeywell zone valves. To better instruct you I will need to know what wire is connected to the R terminal on the thermostat. The whara the other end of that wire get connected (a yellow wire on the zone valve or to a terminal on the transformer?)
The red wires from the zone valves are fine, they are not part of the problem.nyteacher78 said:
Ok makes sense. The red wire goes to the R terminal on thermostat and connects to a yellow wire on the zone valve. The zone valve has one yellow connected to thermostat R and a second yellow connected to the red wire that leads to the C on the transformer. The zone valve has one red wire connected to the white wire that goes to one of the T terminals in the Hydrostat and a second red wire connected to a red wire that connects to the second T terminal…..
Edward Young Retired
After you make that expensive repair and you still have the same problem, What will you check next?
Ok I was just about to write back here is what I have identified, not sure if this changes anything. If not, it sounds like simply swapping the R and W terminals is the easiest solution.EdTheHeaterMan said:FORGET THIS POST. YOU ANSWERED MY QUERY WHILE I WAS TYPING THISto make it easy to tell us where each wire goes, look at this diagram and then see if it matches what you have. It should. I have labeled the Red wires from the zone valves and the Red and White wire that connect them to the Hydrolevel control.Now all you need to do is tell us what color wire is connected under the orange wire nuts in the diagram. The Yellow wires from the Zone valves are already indicated. just tell us what color wire is A,B,D,E,F and G and which terminal is X and Z (for example X=C and Z=R or the other way around) If the thermostat R and W terminals are backwards then there will be a problem and you may need a pro to come and rewire the entire zone valve system, unless you can (feel comfortable) with starting from scratch and do this.
Once you get to this, then the Nest Thermostat is easy to install.
Edward Young Retired
After you make that expensive repair and you still have the same problem, What will you check next?
Thank you! the issue that I have is the wire to the thermostat is only red and white…EdTheHeaterMan said:This looks like the easiest fix. Swap the R and W on all the thermostats Then wire the Nest Thermostat directly. no need for the power connector. You can then wire the C ofthe thermostat to the C on the transformer.EdTheHeaterMan said:This looks like the easiest fix. Swap the R and W on all the thermostats Then wire the Nest Thermostat directly. no need for the power connector. You can then wire the C ofthe thermostat to the C on the transformer.
Good morning, thank you for all the assistance yesterday. I just want to clarify, if I switch the R and W at the thermostats, do I have to run a C wire from the thermostat to the transformer? I was hoping to avoid doing that. But if that is my only option I’ll give it a shot.EdTheHeaterMan said:This looks like the easiest fix. Swap the R and W on all the thermostats Then wire the Nest Thermostat directly. no need for the power connector. You can then wire the C ofthe thermostat to the C on the transformer.nyteacher78 said:
Hello! Is the solution then for me to get the Nest working for my to run a C wire to the transformer? I can attempt to give that a shot. Would it be easier to try to set up the nest power connector?EdTheHeaterMan said:This looks like the easiest fix. Swap the R and W on all the thermostats Then wire the Nest Thermostat directly. no need for the power connector. You can then wire the C ofthe thermostat to the C on the transformer.
dang 😂HVACNUT said:By George, I think you've got it. But you forgot a wire nut.
Edward Young Retired
After you make that expensive repair and you still have the same problem, What will you check next?
EdTheHeaterMan said:EDIT SEE BELOW:I am not familiar with the Nest Power Connector. That came out after I retired. Does the Nest Power Connector get mounted near the boiler then provide power to the nest thermostat with the existing 2 wire for heating only (or 4 Wires for cooling and fan) so you don't need to run a new wire to the thermostat?I was saying that you don't need the Power connector assuming you had sufficient conductors or were going to run another wire with sufficient conductors to accommodate the common conductor to the thermostat. If the Power connector will provide the needed power to the thermostat with the existing wires, then you can still use my wiring fix on your existing zone valve/thermostat design. then you will have the common needed to the Nest Power Connector. I will do more research in order to answer your query. Mr. Ed After reviewing the info on the Google Nest Power Connector, it appears that you will not need to add the C wire to the thermostat. Here is your diagram:
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@EdTheHeaterMan and @nyteacher78 this was great and I almost have mine figured out. Mine is wicked simple but Mr Ed I had a question for you. Keep it going here or make a new thread?
Make a new thread and just reference this thread by copying this URL
https://forum.heatinghelp.com/discussion/185655/hydrostat-3250-plus-cwire-terminal
Then past it in your discussion. It will end up looking like this after your hit the return key
Hello everyone I could really use your expert advice. I need to connect to C wire to the set up you can see in the pictures. But I cannot for the life of me locate anywhere that one would go. Does anybody have any ideas of what I can do with this set up that I have?
Edward Young Retired
After you make that expensive repair and you still have the same problem, What will you check next?
