I have a gas fireplace with a plain old mercury thermostat. My wife believes that because I have half the house converted to ST that everything is automated so I find the fireplace merrily heating a dark living room at 1 in the morning. I need to cut the heat cct when I go into night mode.
Can’t decide the best route to go as I have one must have. I need the internal fan (on an ST dimmer currently) to run about 15 minutes after the fireplace reaches temp and turns off. I would install another z-wave thermostat but I can’t find one that is supported and runs the heat fan for more than 90 seconds after cut-off. There is also no C power (24 VAC?) available at the thermostat except AC.
My only option, I think, is to put a temp multi by the fireplace vent and install a z-wave relay on the old thermostat to interrupt the cct then use a smart app to turn the fan off 15 minutes after the multi temp comes down to a set point and kick out the relay when night mode is triggered. This unfortunately still leaves the manual temp set to come on as soon as night mode is over.