69-1849 - PRO 4110D Programmable Thermostat - Honeywell

PRO TH4110D Programmable ThermostatPower options & mountingConnect commonside of transformerto “C” terminalAC PowerThe thermostat can be powered by 24VAC power, or by batteries.To wire the thermostat for AC power,connect the common side of thecooling transformer to the “C” terminalas shown at left.Important: Remove R/Rc jumper for2-transformer systems only. (See wiringdiagram on page 5.)Battery PowerThe thermostat can be powered bybatteries alone or, if used with ACpower, can provide backup power.During power interruptions thebatteries will save time/day settingsand power the display.Install batteries in back of thermostat(optional if AC powered).To Mount ThermostatAlign the 4 tabs on the wallplate withcorresponding slots on the back of thethermostat, then push gently until thethermostat snaps in place.7