Thermostat replacement suggestion

[myyaz33]

Looking to replace my regular thermostat with something controllable via Homeseer. Had an RCS TR40 at the old place, but left it there. I do have an Omnipro controller but will likely just tie into Homeseer as the Omnistats are hard to find at a decent price and I read they are flakey. I am leaning towards a Z-wave model. Something like the Honeywell T6 Pro - TH6320ZW2007. I have a Carrier heat pump which is currently connected to a Vive Comfort TP-S-855C thermostat. Current thermostat configuration shows 2H2C stages. I have attached a picture of how it is currently wired. The W & W2 terminals are jumped, which I assume would be the heat strip backup. Would the Honeywell work? or any thoughts or other suggestions?

Old thermostat manual - https://watsco.scene7.com/is/content/Watscocom/vive_tp-s-855s_article_1402659513174_en_ii
Possible new Honeywell thermostat manual - https://customer.resideo.com/resources/Techlit/TechLitDocuments/33-00000s/33-00587EFS.pdf

 

[BraveSirRobbin]

I installed two Honeywell T9 units for my upstairs and main floor heat pumps. For the upstairs I also purchased a remote temperature sensor as the t-stat was in the hallway and was influenced by the lower level temperatures in the winter. This thermostat can set the feedback temperature to this remote sensor (mine was in a bedroom).

I also got the large wall adapter.

I interfaced both with HomeSeer using the Shill plugin and created a nice HSBuddy control screen.

Here is a pic of the wiring before installation.



Here is how I wired the T9:

R Red
Y Blue
C Brown
G Green
Aux White
O/B Black

Make sure you select "O Wire" for the reversing valve question during installation.

 

[myyaz33]

I actually picked up 2 of the Honeywell T6 of EBay the other day. 1 for house and 1 shop which has radiant floor heat and remote sensor. It should handle it similar to what you mention. I am wondering if I will have to replace my Z-Troller. I have a ZNET G2 sitting which was the plan years ago when I bought it. I am finally on HS4 but still using the legacy Z-wave plug-in. Most my devices are old so really dont care to upgrade if there is no benefit. One of the main drivers for the thermostat is go get another temp and humidity sensor in the house to use to compare against (long showers). Can't find Omni Humidity Sensors reasonably priced.

 

[BraveSirRobbin]

OK, FYI, these thermostats interface via WiFi. I would highly suggest getting this mount as well, especially if you have a larger hole in the drywall from your old unit as I did.

 

[myyaz33]

I see. I got the T6 which is Zwave. I think the large plate is coming with it. Not 100% sure though. The existing hole isnt large, plus I dont mind patching drywall if needed.

 

[BraveSirRobbin]

Oh, ok. I didn't realize the T6 is ZWave based. Good luck with the install!

 

[myyaz33]

T6 installed and connected to Homeseer. Pretty easy install although I included the device while powered on batteries which was a mistake. Had to exclude and include again on 24v power from common. Then put batteries back in. On my old thermostat the white wire W &W2 were jumped. I just connected the white white to the Aux in on the new T6 and set the proper settings in the thermostat setup for Aux/E heat. Glad to have remote control of the thermostat again. It has been 9 years without.

 

[pete_c]

I installed the Honeywell T6 ZWave per recommendation of Ring and it worked great.

Connected to the Ring hub with no issues. I did have to rerun a new thermostat wire as there were only 3 wires and I needed 4.

 

[myyaz33]

I have another one that I might try and use on the radiant floor heat in the shop. Not sure if it will work or not. I have not looked at the wiring yet. I dont really NEED control of the floor heat, but it gives me another temp and humidity sensor for the shop as getting ones for the Omni are $$

 

[myyaz33]

Got the shop Thermostat wired to the radiant floor heat controller Azel-81. Was able to use the existing 10k thermistor (floor probe) that was with the old Azel thermostat. The TH6320ZW2007 was configured as a boiler. Unfortunately the way this thermostat works is you can use the sensor in the thermostat or the remote probe or an average of the 2. It only shows 1 temp on the screen and only reports 1 temp via z-wave. I was hoping to be able to see both temps in z-wave devices. Honeywell did support confirmed this after I called them. Online chat was not helpful, they kindly nudged me toward contacting my security provider.. Honeywell does have another model (not z-wave I believe) made for radiant/boilers that can report both sensors. Now I can log runtimes and query stats for other automation actions.