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Thermostat with WWSD

bpkiely
bpkiely Member Posts: 5
in Thermostats and Controls

Does anyone know if they make a thermostat with warm weather shut down built in. I built a new house a couple of years ago and installed a Viessmann Vitoden 100-W with panel radiators and not electric thermostatic valves on each panel radiator and a Taco variable speed circulator running continuously during heating season. Basically, the system shown below. When setting up the boiler I discovered the Vitodens 100-w does not have warm weather shut down functionality. I ended up installing a basic thermostat that I crank up to 80 during heating season just so variable speed pump runs continuously. I then turn off thermostat during summer. I would like to add warm WWSD somehow so I thought the easiest solution would be a thermostat with WWSD if one was available. I have looked online, and some thermostats say they have WWSD but it is unclear if I also need to install a WWSD control. Any feedback would be appreciated.

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Comments

  • HVACNUT
    HVACNUT Member Posts: 6,941

    A8 is for an outdoor sensor and Outdoor Reset.

    Screenshot_20250821_103131_Samsung Notes.jpg
  • GGross
    GGross Member Posts: 1,588

    depending on which model 100-w you have the process to set it up might be a little different. but if you do not mess with the settings of the boiler, and are running on outdoor reset the default base indoor temp is 68 degrees which will roughly be your WWSD temp

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