Carrier PTACSTAT-NP-HP Installation & Operating Manual

Contents

Carrier PTACSTAT-NP-HP Installation & Operating Manual Manual pdf 5 page image

5BatteriesBattery operation is available for installations where there is no common (C)wire available at the thermostat. For battery operation, install two alkaline AAbatteries. The thermostat is designed to operate up to one year on a set ofbatteries. A battery indicator on the display warns when battery replacement isneeded. If batteries are installed and the thermostat is operated from 24VACpower, battery operation will occur only when 24VAC power is not present. Thechangeover between 24VAC power and battery power is automatic.For HeatCool system, 5 wires are needed for 24VAC operation and 4 wires arerequired for battery operation.For HP system, 6 wires are needed for 24VAC operation and 5 wires for batteryoperation.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 properoperation.INSTALLATIONMounting to a horizontal junction box.For those installations requiring it, mounting hole locations for thenon--programmable are spaced to fit a horizontal junction box.Step 1 — Thermostat LocationS Approximately 5 ft (1.5m) from floor.S Close to or in a frequently used room, preferably on an insidepartitioning wall.S On a section of wall without pipes or duct work.