Engineered Comfort Fan Coil Controller EZstat Dokumentacja Pobierz pdf (Strona 4)

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

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