My old thermostat has two sets of labels for the connectors. Which ones do I use when installing the Nest Thermostat?

The Nest Learning Thermostat, comes with a limited warranty. Nest Labs, Inc. warrants that the product will be free from defects in materials and workmanship for a period of two years or one year for Factory Refurbished Products form the date of the original retail purchase. This is stated within the the documentation that comes with the Nest and goes into further detail. Nest labs will replace items out of warranty but is subject to there discretion.

If the Nest Learning Thermostat is connected to a Wi-Fi network it will adjust for Daylight Saving Time automatically from the information that was entered during initial setup. If the Nest is not connected to a Wi-Fi network, the time must be changed manually. This can be done yourself in the Settings on your thermostat.