Honeywell ENERGYPRO T8665D - Manual (Page 38)

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REPLACING THE BATTERIES
(T8665C ONLY)
IMPORTANT
Three AA alkaline batteries are
included with the thermostat. Batteries
must be installed for programming and
operation of the thermostat and the
heating/cooling system.
1. Install batteries in wallplate so positive
terminals all point up (as shown).
2. If the thermostat is already mounted on
the wall, remove the thermostat by
placing your thumb between the
thermostat and wallplate and pulling the
thermostat up and away as shown on the
next page.
M10622
INSTALL 3 AA ALKALINE BATTERIES
AS SHOWN, POSITIVE (+) TERMINALS
TOWARD TOP.
WALLPLATE
B
R RC O W Y G
Day