Install Batteries - Honeywell RTH8500D Owner's Manual

1. Install three fresh AAA alkaline batteries on the back of the
thermostat as marked on the thermostat.
BATTERIES
(3)
2. Remove the tab labeled "Remove during installation" in the
lower right corner of the thermostat back.
REMOVE
TAB
69-1725-1
Step 8. Install Batteries
+ + +
+
+
22
BACK OF THERMOSTAT
M22212
M19920