Honeywell TB8220U Owner's Manual page 16

Replace the batteries as follows:
1. Remove the thermostat
from the base by pulling
it straight out.
2. Install three new AAA
alkaline batteries with
proper polarization.
NOTES:
— Always use AAA
alkaline batteries.
— All programming
(Schedule, Date
and Time) infor-
mation is retained
during battery
replacement.
WALL
16
M19919
62-3071—2