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CNT-SVX07C-EN 1

Chapter 1

Overview and specifications

This guide provides installation and configuration information for the

Tracer ZN521 zone controller, as well as a description of its operations.

The overview includes a product description, specifications, and descrip-

tions of ancillary products that may be necessary.

Product description

The Tracer ZN521 is an application-specific controller that provides

direct-digital zone temperature control. The controller can operate as a

stand-alone device or as part of a building automation system (BAS).

Communication between the controller and a BAS occurs by means of a

LonTalk communication link, which complies with the LonTalk protocol.

The Tracer ZN521 supports the following equipment:

• Fan coils

• Unit ventilators

• Blower coils

The Tracer ZN521 can be configured to control:

• Tri-state modulating or two-position valves

• Tri-state modulating dampers:

outdoor/return air, and face-and-bypass

• DX cooling (single stage)

• Electric heat (two stages)

It is designed to be field-installed and is sent from the factory unconfig-

ured. Use the PC-based Rover service tool to configure the controller for

specific applications

Note:

For information about using the Rover service tool, see the

Rover Installation/Operation/Programming guide (EMTX-

SVX01A-EN).

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