11-15-2022 08:34 AM
I have two next thermostats I'm looking to connect & each thermostat only has a white & red wire.
I've gone to the zone controller & connected a Google Power Connector to the white, red, and what I believe is where the C connector goes (see pic). I'm still getting low power & wifi disconnects. All software has been updated on the nests.
HELP!
11-15-2022 10:53 AM - edited 11-15-2022 11:00 AM
My concern is that system looks like a high voltage system and we need to verify that you have a low-voltage transformer installed. Using a volt ohm meter, set the meter to AC voltage, put one lead to the number number 6 N/C and the second lead to the #5 COM and see if you have approximately 24V AC and not over 29V AC.
Ken, The AC Cooling Wizard
11-15-2022 10:57 AM
Ok, I'll try that... there are 3 terminals marked COM. One up top next to R & W, #3 on bottom left, and #5 (your suggestion). Are the other two dead?
11-15-2022 11:05 AM - edited 11-15-2022 11:19 AM
@CoolingWizard The TACO box runs into this other box before it goes off to the thermostats.
Should the Google Power Connector attach to this?
11-15-2022 11:35 AM
I see in this picture T, T and X,? I am curious if there is low voltage between T and X. The goal is to find ~24V AC.
Ken, AC Cooling Wizard
11-15-2022 11:41 AM
@CoolingWizard I should be able to figure that out if I put one lead to the number number 6 N/C and the second lead to the #5 COM? Here is a pic of the setup on the pole.
11-18-2022 04:58 PM
Hi folks,
@CoolingWizard, thanks for the help!
@genecook, how's it going? Were you able to test if you're getting 24V between T and X? Let us know if you still need assistance and we'd be happy to assist.
Thanks,
Edward
11-21-2022 05:06 PM
Hi genecook,
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
11-22-2022 05:09 PM
Hi genecook,
I'm just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.
Thanks,
Edward
11-23-2022 03:00 PM
I’m sorry I’ve been so busy I was not able to reply, I hope you have a volt ohm meter I believe the connectors on the right hand side are low-voltage, and the ones on the left a quarter line voltage stay away from that side. Now let’s talk about what about N/O and N/C. N/O stands for normally open, and N/C means normally closed. Now you’re wanting to connect to normally open because what you wanna do is cause that circuit to close to initiate an action. I don’t know the device you’re hooking up to that well I’ve not come across them, so I don’t know if it responds to the thermostat or it drives the thermostat.
with a voltmeter, you could check between N/C, and common and see if there’s any measured AC voltage. I am hoping it gives you something around 24 V AC and not 120 V AC..
Ken, The AC Cooling Wizard
11-28-2022 12:37 PM
Hey folks,
Thanks for following up, Edward.
I appreciate your assistance here, Ken.
It looks like we haven't heard back from the OP, so I'm going to lock the thread in 24 hours.
Best,
Mark