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  Honeywell Inc.  

Excel 10 W7750A, B Constant Volume AHU Controller. CSI 3-Part Specifications.

Excel 10
W7750A,B Constant Volume AHU Controller

SPECIFICATION DATA

GENERAL
The W7750A,B is the Constant Volume Air Handling Unit (CVAHU) Controller in the Excel 10 product line family. The CVAHU is a LonMark® compliant device designed to control single zone and heat pump air handlers.

FEATURES

  • Controls single zone and heat pump Air Handling Unit.
  • Uses Echelon® LonWorks® network (E-Bus) communications protocol.
  • High-speed 78 kilobit communications network.
  • Conforms with Echelon® LonMark® HVAC Interoperability standard for Roof Top Unit controllers (profile number 8030).
  • Free Topology Transceiver (FTT) network technology is insensitive to polarity, simplifying installation.
  • Capable of stand-alone operation and has enhanced features available when using the E-Bus network communications.
  • 120 controllers per Q7750A Excel 10 Zone Manager.
  • Designed for both staged heating/cooling control and modulating heating/cooling control.
  • Uses either Series 60 Floating Control (W7750A and B) or PWM (W7750B only) providing modulating control for heating/cooling equipment.
  • Supports two types of economizer control, modulating control and enable/disable control.
  • Provides Proportional Integral Derivative (PID) temperature control.
  • Uses an adaptive algorithm (patent pending) that continuously adjusts the discharge air setpoint as needed.
  • Factory configured via EEPROM with critical user parameter default values.
  • Motion sensor interface for enhanced energy savings.
  • Window sensor input for additional energy savings.

DESCRIPTION
The W7750A,B is the Constant Volume Air Handling Unit (CVAHU) Controller in the Excel 10 product line family. The CVAHU is a LonMark® compliant device designed to control single zone and heat pump air handlers.

Control Techniques Supported (Heating and Cooling):

Output capacity:

    W7750A� Six digital outputs
    W7750B� Eight digital outputs

� Heat pump control: Up to four compressors and up to four stages of auxiliary heat.
� Up to four stages of electric or gas fired heating.
� Up to four stages of mechanical cooling.
� Floating hot water or steam heat.
� Pulse width modulated heat (W7750B only).
� Floating chilled water cooling.
� Pulse width modulating cooling (W7750B only).
� Floating mixed air damper output.
� Pulse width modulating mixed air damper output, (W7750B only).
� Occupancy sensor override and window open override.

SPECIFICATIONS

Models: W7750A,B
The W7750 is field mounted at or near the Air Handling Uni