Honeywell Home Wi-Fi Series User Manual page 24

Installing your thermostat
10 Switch heating/cooling system
ON.
Important!
10a Verify that the C wire
is connected at the
thermostat and at the
heating/cooling system.
10b Make sure the heating/
cooling system door is
firmly secured.
10c Switch power back ON
for your heating/cooling
system at the breaker box
or its power switch.
69-2803ES—05
Circuit
breaker box
22
or
Heating/
M31544
cooling
system power
switch