Google Nest Learning Thermostat 4th Gen Installation And Configuration Manual page 81

Action:
Testing the basic operation
after installation
Testing second stage or
auxiliary heat after installation
Reference Material - "How To" Quick Reference Guides
Steps:
Use System Test function in Equipment settings
You can use the System Test function in the Equipment settings to engage each
individual equipment component. If the thermostat is not connected to Wi-Fi,
you will need to manually activate equipment by following the steps below.
Activate heating and cooling
Simply turn the ring to set the current set point above or below the current
ambient temperature in the room. You'll need to switch to and from heating and
cooling modes as you do this.
Switching modes
To switch to and from heating and cooling modes, follow these steps:
1) Press the ring to bring up the menu
2) Select the Heating and Cooling icon
3) Turn the ring to select HEAT or COOL
4) Press the ring again to select
Note: To protect the heating and cooling systems it controls, the Nest Learning
Thermostat's default minimum on-off times for manual temperature
adjustments are 2.5 minutes for heat pumps and air conditioning systems.
Conventional Heating
Before the Nest Learning Thermostat activates Time-to-Temperature, second
stage heat will turn on when the setpoint is 4°F or greater than the room's
ambient temperature.
Heat Pumps
Auxiliary heat will turn on when the setpoint is 4°F and the outdoor temperature
is below 50°F, the default auxiliary heat lockout temperature. Auxiliary lockout
can be turned off in the Heat Pump section of Equipment Settings in order to
test auxiliary heat.
To test second stage or auxiliary heat at installation, just raise the temperature
4°F in heating mode with the auxiliary lockout turned off. Once Time to
Temperature is activated, the Nest Learning Thermostat will use this feature to
manage second stage and auxiliary heat.
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