11. Install two fresh “AA” alkaline batteries in the battery compartment. Be sure
to match positive (+) ends of batteries with positive (+) battery terminals in the
battery compartment. (The thermostat will operate from 2 size “AA” alkaline
batteries or 24VAC power. When operated from 24VAC power, your thermostat will
maintain time and continuously display the temperature during a loss of AC power
with the batteries installed.)
12. Replace the cover on the thermostat by snapping it in place.
13. Turn on power to the system at the main service panel.
14. Test thermostat operation as described in the following section.
FAN OPTION SWITCH
Read the following information before setting the fan option switch (See figure 3). If you
are unsure of your application, contact a qualified service person.