Engineered Comfort Fan Coil Controller EZstat - Connecting System Inputs

Installation and Operation Manual
●
Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014 Supersedes: NEW
Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation.
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Turn Counterclockwise unl
the screw engages the base.
 4.2 ConnecngInputs
The inputs for the EZstat are congured for specic funcons and do not require set up in the eld. Not all inputs are
required for every model or applicaon.
  Remotespacetemperaturesensor(oponal)
Connect a 10kΩ, Type II thermistor temperature sensor (Nailor part #H1‑1989) to the remote space temperature (RS)
input and ground (GND) terminals. The input includes the internal pull‑up resistor. Follow the instrucons supplied with
the sensor for installaon.
When a remote space temperature input is connected to the EZstat, the remote temperature is used instead of the
internal temperature sensor.
Fig. 4-1 Wiring for remote space temperature sensor
To prevent mounng screw heads from toughing the circuit board in the controller, use only the mounng
screws supplied. Using screws other than the type supplied may damage the EZstat unit.
RS
GRD
7. Turn the Allen screw counterclockwise unl it backs out of the mounng base and engages the case.
Discharge air temperature
Connect a 10kΩ, Type III thermistor temperature (Nailor part #H1‑0246) probe to the discharge air temperature (DAT)
input. The input includes the internal pull‑up resistor.
Fig. 4-2 Wiring for Discharge Air Temperature Sensor
GND
DAT