Engineered Comfort Fan Coil Controller EZstat - Specifications

Installation and Operation Manual
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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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 3.3 Specicaons
EZstat specicaons are subject to change without noce.
User Interface
The user interface is a color display and with ve push buons. Through the menu driven display, an operator can do the
following:
• Add or change user passwords
• Change setpoints
• Set BACnet addressing
• Set up and commission the installaon
• Congure any available opons
Security
Separate passwords for users and controls technicians.
Display type
• 128 ×128 pixels
• Acve color LCD with LED back lighng
• 0.98 x 1.04 inches (25 x 26 mm)
Inputs and outputs
All inputs and outputs are preprogrammed and applicaon specic. Review wiring label for proper connecons.
Analog inputs
Analog inputs represent BACnet analog input objects and are congured for discharge air temperature, remote
temperature sensor and water temperature sensor. Not all input sensors are applicable or required for all applicaons.
• Sensors are automacally detected
• Inputs accept industry‑standard 10,000 Ω, Type II (Nailor Part# H1‑1989) or Type III (Nailor Part# H1‑0246 and H1‑1764B)
thermistors sensors.
• Input overvoltage protecon up to 24 VAC, connuous. 12‑bit analog‑to‑digital conversion
Analog outputs
Analog outputs are congured to represent BACnet analog objects. The outputs control modulang valves, and variable
speed fans, or other equipment that requires a proporonal input signal.
• Short‑circuit protected
• Loads up to 10 mA at 0–12 VDC
• 8‑bit PWM digital‑to‑analog conversion
Relay outputs
Relay outputs are congured to represent BACnet binary objects. The outputs control On/O valves, speeds for three‑
speed fans, fan start circuits, or electric heat.
• All relay outputs are normally open, SPST, Form “A” relays
• 1 ampere maximum per relay at 24 VAC or VDC for each output. Maximum for all relay outputs is 3 amperes (72VA).
Connectors
• Screw terminal block mounted to back plate
• Wire size 14‑22 AWG
  Communicaons—BACnetMS/TP
• Integral peer‑to‑peer BACnet MS/TP network communicaons. Network speeds from 9600 to 76,800 baud.
• Front panel congurable device instance, MAC address, and baud. Automac baud detecon, see the topic Set up the
communicaon. Screw terminal block mounted to back‑plate. Wire size 14–22 AWG
• Meets or exceeds ANSI/ASHRAE BACnet Standard 135‑2008 for Applicaon Specic Controllers