Carnes EB User Manual

SPECIFICATION SHEET

SINGLE DUCT AIR TERMINAL

HEATING/COOLING CHANGEOVER

PRESSURE DEPENDENT ELECTRIC CONTROLS

EB - CONTROL OPTION

COPYRIGHT © 2008 CARNES COMPANY

ALL RIGHTS RESERVED

SUPERSEDES 20122-F 20122-G

By Carnes
By Others

CONTROL DIAGRAM

SEQUENCE OF OPERATION

COOLING CYCLE:

On a call for cooling, airflow will increase as the damper opens towards the
maximum setting to satisfy room set-point.

On a call for less cooling, airflow will decrease as the damper closes
towards the minimum setting to satisfy room set-point.

HEATING/MORNING WARM-UP CYCLE:

Warm air sensed by the duct mounted sensor of the changeover thermostat.
This reverses the action of the zone thermostat and switches damper
rotation.

On a call for heating, airflow will increase as the damper opens towards the
maximum setting to satisfy room set-point.

On a call for less heating, airflow will decrease as the damper closes
towards the minimum setting to satisfy room set-point.

The maximum and minimum settings are determined by field adjusted
mechanical stops.

ITEM PART NO. DESCRIPTION

1 AXBAA ACTUATOR
2 AXWBE ELECTRIC THERMOSTAT
3 AXBAJ CHANGEOVER THERMOSTAT

Imperial [IP] Dimensions

Metric (SI) in Parentheses

CARNES COMPANY 448 S. Main St., P. O. Box 930040, Verona, WI 53593-0040 Phone: [phone] Fax: [phone] www.carnes.com

24V

COMMON

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FOR MODELS AB (BYPASS) WITH
LEFT HAND CONTROLS (EB2C),
“W” AND “Y” ARE REVERSED.

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