Batteries
Battery operation is available for installations where there is no common (C) wire available at the thermostat. For battery operation, install two alkaline AA batteries. The thermostat is designed to operate up to one year on a set of batteries. A battery indicator on the display warns when battery replacement is needed. If batteries are installed and the thermostat is operated from 24VAC power, battery operation will occur only when 24VAC power is not present. The changeover between 24VAC power and battery power is automatic.
For HeatCool system, 5 wires are needed for 24VAC operation and 4 wires are required for battery operation.
For HP system, 6 wires are needed for 24VAC operation and 5 wires for battery operation.
When battery operation is used, the C terminal does not need to be connected.
NOTE: Batteries are not required when there are enough wires for proper operation.
INSTALLATION
Mounting to a horizontal junction box.
For those installations requiring it, mounting hole locations for the
Step 1 — Thermostat Location
SApproximately 5 ft (1.5m) from floor.
SClose to or in a frequently used room, preferably on an inside partitioning wall.
SOn a section of wall without pipes or duct work.
5
