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Overview
W7751B,D & F VAV II Controllers provide pressure independent or dependent air flow control and series and parallel fan control with one and two duct applications. W7751H & J Smart VAV Actuator are VAV Box Controllers with a ML6174B Actuator.
Features
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.
Actuator included with W7751H mounts directly onto VAV box damper shaft and has up to 70 lb-in. torque, 90 degrees stroke, and 90 sec.
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.
W7751D,F mount to a standard 4 x 4 in. and 5 x 5 in. junction box or snapped to 35 by 7.5mm EN50022 DIN Rail.
Subbase provides the slotted hole pattern for the R7450 series IRC devices (118x87 mm).
Product Specifications
- Application
- VAV Terminal Box
- Dimensions (in.)
- 5 7/8 in. high x 4 1/16 in. wide x 3 3/4 in. deep
- Dimensions (mm)
- 149 mm high x 103 mm wide x 95 mm deep
- Includes
- ML6161 Actuator mounted directly on the VAV box
- Comments
- UUKL approval for use on fire systems
- Frequency
- 50 Hz; 60 Hz
- Approvals, Canadian Standards Association
- Listed: File number LR95329-3
- Operating Humidity Range (% RH)
- 5 to 95% RH, non-condensing
- Output Type
- Pulse Width Modulation, Floating, Staged On/Off
- Compatible With
- See Application Selection Guide (63-7045)
- Contact Ratings
- Has UUKL approval for use on fire systems
- Power Consumption
- 6 VA
- Voltage
- 24 Vac with a valid range of 20 to 30 Vac
- Setpoint Temperature Range (C)
- 7 to 37 C
- Setpoint Temperature Range (F)
- 45 to 99 F
- Operating Temperature Range (F)
- 32 F to 125 F
- Operating Temperature Range (C)
- 0 C to 50 C
- Shipping and Storage Temperature Range (F)
- -40 F to +150 F
- Shipping and Storage Temperature Range (C)
- -40 C to +65 C
- Approvals, Federal Communications Commission
- Meets FCC part 15 Class A requirements
- Network Communications
- LonWorks Bus
- Commissioning Software
- CARE; LonSpec; RapidZone; LNS Plug-in
