a PIN code to stop others from altering them. An alternative workaround for this is shown in the comments below which uses the internal relays to do the same function. They all perform a similar duty, adding learning, remote control and intelligence into the standard scheduling thermostat. Other operations are equally easy.
I had it connected to a modern combi, but it can control hot water production and has OpenTherm integration if your boiler supports. Compatible with 95 of North American heating and cooling systems. Thermostat wire is just a big spool of bundled, color-coded wires. Watch the review Installation! Based on typical energy costs, weve estimated average savings of 131 to 145 a year. Changing the temperature is a doddle just turn the metal ring to set it to the desired temperature.5C increments. The Nest will pulse the heat wire, turning on the furnace to pull a bit of power to keep itself going. The Nest works out whether anyone is home by using either the sensors embedded in its face or by tracking the location of user smartphones. Price, the third-generation Nest Learning Thermostat costs 199 or 249 with professional installation.
My old thermostat has 8 wires, all hooked.
New one doesnt have instructions for that.
What do I do?