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 (118×87 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 |