Power Options & Mounting; Ac Power; Battery Power; To Mount Thermostat - Honeywell PRO TH3210D Manual

Installation Guide
Connect common
side of transformer
to "C" terminal
AC Power
The thermostat can be powered by 24
VAC powel, or by batteries.
To wire the thermostat R)rAC power,
connect the common side of the
transfbrmer to the "C" terminal as
shown at left.
Battery Power
The thermostat (_;*,11 be powered by
batteries alone or, if used with AC
power, can provide backup power to
the displ W during power interruptions.
Install batteries in back of thermostat
(optional if AC powered).
To Mount Thermostat
Align the 4 tabs on the wallplate with
corresponding slots on the back of the
thermostat, then push gently until the
thermostat snaps in place.