Overview

Honeywell W7751B2002 VAV Controller. The W7751B,D and F are VAV II Controllers in the Excel 10 family product line. These VAV controllers provide pressure independent or pressure dependent air flow control and series and parallel (induction) fan control using single and dual duct applications. VAV systems generally provide cool air only to the zones. The W7751 controllers provide additional outputs that control VAV box reheat coils. The heaters can be staged electric or modulating hot water. Supply and exhaust pressurization control are provided on a zone basis. W7751H and J Smart VAV Actuator are factory-integrated VAV Box Controllers with a 90 second ML6174B Direct-Coupled Actuator in the Excel 10 family product line. Uses Echelon® LonWorks® protocol. W7751B,D,F use Free Topology Transceiver (FTT) networks and are compliant with VAV device object type number 8010 functional LonMark® profile. Energy saving setpoint reset for electrical demand limit control. Timing at 60 Hz. High speed 78 kilobit communications network. Capable of standalone operation, but uses E-Bus network communications. Easy user-access to the network communications jack. Uses enhanced microbridge-type airflow sensor with dual integral restrictor design. Easy user-access to airflow sensor inputs. Provides Proportional Integral Derivative (PID) temperature control. Designed for pressure independent Variable Air Volume (VAV) control. Floating hot water and three-stage electric or modulating hot water heat. Provides nonlinear floating algorithm for velocity control loops. Individual zone pressurization for supply and exhaust control. Factory configured via EEPROM with critical user parameters default values. Motion sensor interface for enhanced energy savings. Supports Terminal Regulated Air Volume (TRAV) concept. Pressurize and depressurize, night purge, and morning warm-up sequences supported. Wall module options for sensor, setpoint and bypass. Software selectable limits on remote setpoint adjustments. Three integrated 8 bit pipelined microprocessors running at 10 MHz. 14 bit A/D converter. 32K by 8 ROM/PROM, 512 bytes of EEPROM, and 2048 bytes of static RAM. Subbase provides the slotted hole pattern for the R7450 series IRC devices (118x87 mm) This item has been replaced by the W7751B2010 which is what you will receive when ordering this part.

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Manufacturer Honeywell

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