HW C7400S1000/U

Economizer Sensors

C7400S Enthalpy Sensor

• Digital enthalpy (humidity/temperature) sensor for use with S-Bus devices
  and W7220 economizer controller
• This unit mounted C7400S enthalpy sensor includes solid state temperature
  and humidity sensors
• Outputs a digital communicating signal on a 2-wire Sylkbus communications link,
  reporting the temperature and humidity separately to the controller
• The controller 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
• When used with an economizer, 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
• 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
• Operating temperature range: -40° to 150°F (-40° to 66°C)
• Maximum ambient temperature: 150°F (65°C)
• UL Listed component (Guide info XAPX)