12-13-2022 04:38 PM
I have a Nest Thermostat and a Boiler with a Hydrostat 3200.
With an R&W connection it works fine, but doesn’t have enough battery power and can run through batteries.
I tried adding the power connector, it had enough power, but wasn’t controlling the boiler at all, even though it confirmed it was connected to the R&W wire. The heat wouldn’t turn on. Tried resets etc. Restored it back to original, but wondered if anyone had a similar issue and was able to resolve it.
12-13-2022 05:52 PM
I have only seen this when the power connector was not connected properly. Here’s what you need to understand about those type gas boilers in the gas valves and control control systems. Some boiler control systems are not 24V AC power based. In fact they just have a control circuitry that goes through a thermostat and when that 500mV gets back to the gas valve, it starts the boiler. if your boiler has a 24V AC control system you will find a transformer and that would work. The 24V AC is needed to properly power the Nest Power Connector.
Ken, AC Cooling Wizard
12-20-2022 11:48 AM
Thank's for your response Ken. I can can definitely see there is a 24v connection, but unsure where I should connect a C-Wire to. The C wire is already run, I tried running it from the Z screw inside the hydrostat, but unfortunately it appears that is the low wattage you mentioned. (I didn't do any of the wiring or installation here, I am just hoping not to have to pay someone to come out for a few minutes of work.)
12-26-2022 04:54 PM
Hi folks,
@CoolingWizard, thanks for the help!
@Mdmcmahon, I wanted to follow up and see if you are still in need of any help. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further.
Thanks,
Edward
12-29-2022 05:32 PM
Hi Mdmcmahon,
It's me again. I wanted to check back in to see if you have other questions and concerns. Feel free to let me know if you do.
Thanks,
Edward
01-02-2023 07:27 AM
Hi Edward, unfortunately not, we'll likely be contacting a local technician or replacing the nest with our old Thermostat.
01-04-2023 07:35 PM
Hi Mdmcmahon,
Thanks for the update. Let us know the results once your system has been checked by a technician. Keep us posted.
Thanks,
Edward
01-09-2023 10:38 AM
Hey there Mdmcmahon,
Checking back in should you still have some questions here. Let us know by replying to this thread.
Best,
Mel
01-10-2023 10:47 AM
Hi everyone,
Just one quick final check in here since activity has slowed down. We haven't heard from you in a while so we'll be locking this thread if there is no update after 24 hours. If you have any new questions, updates or just a discussion topic, feel free to start a new thread in the Community.
Thanks,
Mel
12-16-2022 07:13 PM
Hi folks,
@CoolingWizard, thanks for the help!
@Mdmcmahon, how's it going with your Nest Thermostat? Still need our help?
Thanks,
Edward
12-19-2022 07:24 PM
Hi Mdmcmahon,
It's me again. I wanted to check back in to see if you have other questions and concerns. Feel free to let me know if you do.
Thanks,
Edward
12-20-2022 11:45 AM
Hi Edward, I unfortunately have not figured it out yet, even after staring at wiring diagrams for the boiler.
12-20-2022 11:53 AM
The terminal marked 24Volt Ground should be your Common .
Ken