Wireless thermostat

Donniejr

I have a forced hot water system that I’d like to split the zone on the first floor, making two separate zones. I’ll need to install a second thermostat. However, the area I’d like to place the thermostat is nearly impossible to run a wire. It could be done, but not without a major hassle. I realize wireless is an option, but have zero experience with them. First, will I need to change my switching relay? Currently I have a Taco SR504 utilizing 2 zones. Can I use this or will I have to update it to accommodate a wireless thermostat? The other two zones will still be wired. I don’t plan to change them to wireless. If the relay must be changed, which model is preferred that could be used for both wireless and wired thermostats?

GGross

Most wireless thermostats come with at least 2 components, you have the thermostat itself, and then a communication box that you would locate in the mechanical space. The communication box usually has standard thermostat connections on it, that you would be able to run to your switching relay etc, you will need to power the box in the mechanical space independently.

EdTheHeaterMan

Honeywell, now Resideo has a RedLink series of controls that have wireless thermostats, sensors and recieving units that will do what you want. Kind of expensive in order to not run a wire.

You need a Thermostat that does more than you need it to do and a receiver to connect the signal from the Thermostat to the heating unit.

ratio

You can piece it together with your favorite Honeywell RedLINK capable thermostat and an EIM (equipment interface module), but Honeywell has several kits that include all the parts you need. Note that the RedLINK wireless thermostats need an internet gateway for remote access if that's on the list as well.

Alan (California Radiant) Forbes

Honeywell has a kit YTH6320R1001 that includes the wireless thermostat, interface module and a return air sensor which you don't need. The RedLINK system uses a 900MHz frequency to communicate and it is very stable and reliable. We recently used 3 of them in a very large house with plaster walls and there were no problems with connectivity.

You will wire the interface module to TT on your Taco SR504. A separate 24 volt transformer is also needed to power the Honeywell RedLINK system.

Donniejr

Thank you to all who replied. I really appreciate the input.