12-05-2023 12:53 PM - edited 12-05-2023 12:58 PM
I have a system which the primary heat is radiant base board heat. If the Base board heat cannot keep up the secondary heat is ran from a Transom unit which also has the AC and Fan. I need to program the nest to only operate the fan when Transom unit (secondary heat) is required, and for AC. No reason to operate fan for Radiant Heat (Primary heat) Is this possible?
Wiring - Primary heat to W1 - Transom Heat (Secondary) to W2/Aux - Transom Fan to G - Transom AC to Y1
12-10-2023 10:56 AM
Hi Kanner6,
Thanks for posting here in the Community forum. The system you have is equipped with both primary radiant baseboard heat and a secondary transom unit for heating or cooling. To program your Nest Thermostat to only operate the fan when the transom unit is needed, you can follow these steps:
Let us know how that works.
Best,
Zoe
12-20-2023 08:30 AM
Sorry for confusion, I did not have the nest thermostat in front of me and was asking blind. So now, little more information, I have a nest 1st generation, which has Y, C, W, G, R and *OB line. I have the nest connected through my phone and I am looking at setup options, I do not see any fan setup options nor do I see any way of programming the equipment for a second stage. Do I have the wrong thermostat for my needs.
12-24-2023 05:46 AM
Hi folks,
Chiming in — it looks like you have the Nest Thermostat 2020, the mirror one. Checking your thermostat's Equipment, Wiring, and System Details in the Google Home app under your thermostat's Settings might help.
Equipment
The options or settings available in this section depend on what type of system you have. (Example: If you don't have an auxiliary heat or emergency heat, the Auxiliary heat lockout or Emergency heat doesn't appear under Equipment. If you have a humidifier, a Humidifier setting appears.)
Wiring
When you tap Wiring, you can check their thermostat's wiring configuration and tap Update wiring if you need to make any changes.
System details
In this section, you can check the summary of your system information or configuration. If you want to make changes to the settings, you can go to Equipment and tap the option you need to update.
Please let me know how it goes.
I appreciate your input, Zoe.
Regards,
Jenelyn