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  Honeywell Inc.  

Excel 10 T7780A Digital Display Wall Module. CSI 3-Part Specifications.

Excel 10
T7780A DIGITAL DISPLAY WALL MODULE

SPECIFICATION DATA

GENERAL
The T7780A Digital Display Wall Module (DDWM) is an Echelon® LonTalk® (E-Bus) network wall module. The DDWM displays and provides space temperature, setpoint, Occ/Unocc override, application mode (HVAC), and fan mode/speed selection over the E-Bus network for the following Excel 10 controllers: VAVII, CVAHU, and FCU, as applicable.

Using the four-button keypad, the user can change room temperature setpoint, HVAC mode, fan mode/speed, initiate/cancel bypass, and change configuration information such as engineering units.

This wall module is not compatible with Honeywell W7751A,C,E,G VAVI Controllers.

FEATURES

  • Echelon® LonTalk® (E-Bus) network open communication protocol.
  • FTT (Free Topology Transceiver) network technology simplifies wiring.
  • LPT (Link Power Transceiver) network technology compatible.
  • LCD display continuously shows current space temperature and/or time, day/night/standby mode, fan status/mode, as configured.
  • Pushbutton Interface for full navigation and change control of wall module functions.
  • Single touch Occupied/Unoccupied override and Setpoint adjustment.
  • Integral 20K ohm NTC nonlinearized sensor.
  • Remote sensor option senses room temperature up to 500 feet.
  • Automatic remote sensor detector with no configuration programming required.
  • User-configurable sensor offset.
  • Can average up to six additional room temperature sensors over the network.
  • Function Disable option allows non-required functionality to be locked out.
  • Fan Speed/Mode and HVAC Mode commandable from keypad.
  • Selectable °F/°C temperature display.
  • Selectable setpoint type, absolute or relative.
  • Selectable 12 hour/24 hour time display.
  • Separate mounting base for easy installation.
  • Mounts on standard 2 by 4 in. junction box, 60 mm round junction box, or surface mount.
  • Network access jack.
  • Tamper resistant locking cover.

DESCRIPTION
The T7780A Digital Display Wall Module (DDWM) is an Echelon® LonTalk (E-Bus) network wall module. The DDWM displays and provides space temperature, setpoint, Occ/Unocc override, application mode (HVAC), and fan mode/speed selection over the E-Bus for the following Excel 10 controllers: VAVII, CVAHU, and FCU, as applicable.

Using the four-button keypad, the user can change room temperature setpoint, HVAC mode, fan mode/speed, initiate/cancel bypass, and change co