Engineered Comfort Fan Coil Controller EZstat Especificaciones descargar pdf (Pagina 9)

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FAN COIL UNIT CONTROLS

Direct Digital Controls

EZstat – The All-In-One Fan Coil Digital Controller

Control Options:

• Variable Air Volume (VAV) EPIC Fan Technology

with

ECM

• 3-Speed ECM

• 3-Speed PSC

1.OVERVIEW:

Engineered Comfort’s new EZstat is the first commercial all-in-

one digital controller/thermostat for fan coil applications and

offers both simplicity and a competitive advantage for projects

that require Direct Digital Controller (DDC) fan coil application.

The EZstat is a fully digital and programmable standalone or

networkable device that combines a controller, multiple sensor

options, and BACnet networking into a single, integrated

space-mounted device which allows for energy efficiency and

superior user comfort through the use of proportional integral

(PI) control algorithms.

2. FEATURES & BENEFITS

The EZstat comes with the following standard features:

• Factory programmed No special programming, software

applications, or setup tools are required to configure and

commission an EZstat. EZstat comes fully programmed for

standard control sequences.

• Standalone or Network operation Installation can be

scalable from a single room to a network of multiple rooms.

The EZstat can be initially installed as standalone

thermostat and a MS/TP network connection to a building

automation system (BAS) can easily be added at a later

date as needed.

• Easy installation EZstat includes intuitive installation and

operation as well as a powerful set of additional features.

The attractive two-piece design has screw terminal blocks

mounted on the backplate for easy wiring and installation on

the wall or unit.

• Energy savings Significant reduction in energy costs can

be realized when the EZstat is packaged with the EPIC

ECM.

• Cost competitive EZstat can functionally replace many

competitors’ antiquated and bulky controller board and

separate two-piece temperature sensor products at a lower

cost.

• Network ready All models are native BACnet, Application

Specific Controllers ready to connect to a BACnet MS/TP

network.

• PI Control PI control algorithms ensure precise temperature

control.

• New or retrofit applications Ideal for new installations or

upgrades of older, less efficient thermostats.

• Bright, full-color display The full color LCD display (with

LED back lighting), animated icons, and five push buttons

make the EZstat intuitive and simple to configure and

operate. The display is easy to read across a room even in

bright sunlight. Color icons indicate cooling or heating,

occupied, unoccupied or local set back modes and fan

operations. Through the contextual menu-driven display, an

operator can change setpoints, configure available options

(e.g. easily choose between Fahrenheit or Celsius values),

and commission the installation.

• Multiple applications EZstat includes inputs, outputs, and

sequences of operation for the following functions:

- Modulating or 3-speed fan control

- Automatic or manual fan control

- Two-pipe heating and cooling with either modulating

valves or On/Off

- Four-pipe heating and cooling with either modulating

valves or On/Off

- Remote space temperature sensor (Optional accessory)

• Schedule The schedule in the EZstat controls the

occupancy mode. If the schedule is set to ON, the EZstat

uses the occupied set point as the active set point. If the

schedule is OFF, the unoccupied set point is used. The

schedule in the EZstat is a BACnet schedule object. If the

EZstat is connected to a BACnet network the schedule can

be set up with a BACnet operator workstation.

3. NETWORKING

EZstat is an integrated native BACnet Application Specific

Controller (ASC) that does not require the use of external

communication or occupancy modules. The EZstat meets or

exceeds BACnet® Application Specific Controller (ASC)

specifications in the ANSI/ ASHRAE BACnet Standard 135.

This enables the controller to integrate seamlessly with either

a future or existing BACnet BAS network allowing for the

network to do the following:

• Monitor all of the EZstat’s variables

• Assign setpoints values

• Initiate occupied and unoccupied modes.

Ultimately, leveraging the level of control and visibility inherent

to most BAS systems.

Fig. 1 EZstat

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