Product Overview

SPECIFICATION DATA
Put Bar Code Here
63-1365EF-01
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
customer.honeywell.com
® U.S. Registered Trademark
© 2011 Honeywell International Inc.
63-1365EF—01 M.S. 03-11
Printed in U.S.A.
Enthalpy Sensor - C7400S
FEATURES
• This unit mounted C7400S enthalpy sensor includes
solid state temperature and humidity sensors.
• Outputs a digital communicating signal on a two-wire
Sylkbus communications link, reporting the
temperature and humidity separately to the controller.
The controller then determines the enthalpy (total
heat), enabling economizer modes of operation when
outside air enthalpy is suitable for free cooling.
• Enthalpy sensors are compatible with Honeywell
economizer systems.
• The enthalpy boundary curve is programmed via the
controller. When the temperature and humidity are
determined to be suitable based on the relationship to
the boundary, the controller allows outside air for
economizing.
• Ambient temperature operating range from -40° to
150° F.
• Dual enthalpy sensors in outside air and return
switches the controllers to economizer mode of
operation anytime the outside enthalpy is less than the
return air enthalpy.
• UL recognized component (Guide info XAPX).
Guide Specification:
1. Unit mounted C7400S enthalpy sensor including
solid state temperature and humidity sensors with
electronics which shall output a digital communicat-
ing signal on a two-wire Sylkbus communications
link to the controller upon varying enthalpy (total
heat) to enable economizer modes of operation
when outside air enthalpy is suitable for free cooling.
2. Enthalpy sensors are compatible with Honeywell
economizer systems wherein the economizer
changeover enthalpy set point resides via the Sylk-
bus communications network.
3. Ambient temperature operating range shall be -40 to
150F.
4. Dual enthalpy sensors in outside air and return air
shall allow the economizer controllers to switch to an
economizer mode of operation anytime the outside
enthalpy is less than the return air enthalpy.
5. An outside air only enthalpy sensor shall allow the
economizer to enable the economizer package any-
time the outside air enthalpy is below a predeter-
mined value based on the enthalpy boundaries ES
through ES5.