The DNT-VAV-DG1 package is a Native BACnet™ Advanced Application Specific Controller designed for single duct VAV applications. It consists of an intelligent LCD thermostat (DNT-T103) for control and BACnet MS/TP communication, and a remote termination module (DTM-VAV-DG1) for sensing and actuation.

The thermostat has an LCD display, four push buttons for setpoint and occupancy override, and contains a configurable VAV algorithm suitable for controlling the remote termination module. This module, which is designed to mount on the side of the VAV box, comes complete with a damper actuator, flow sensor, and housing. It also has termination points for optional control of a fan or a single stage of auxiliary reheat.


The DNT-VAV-DG1 is suitable for networked or stand-alone VAV boxes of the following types:

  • Single duct, cooling only
  • Single duct, cooling, one-stage digital reheat
  • Single duct, cooling, one-stage time proportioned reheat
  • Single duct, cooling, one-stage PWM reheat
  • Single duct, cooling only, intermittent parallel fan


  • Native BACnet firmware
  • BACnet MS/TP communications (DNT-T103)
  • Micro-processor based LCD thermostat
  • Integrated housing with damper assembly
  • Field configured VAV algorithms
  • Simple air balancing and commissioning with the thermostat keypad
  • True differential pressure sensor
  • Reliable, industry standard actuator
  • Terminal strip for connecting to the DNT-T103
  • Service port

BACnet Device Profile

BACnet Advanced Application Specific

Controller (B-ASC)

Combined Power Requirements

(Termination Module and Thermostat)

24 VAC

48 VA maximum with fully loaded BO’s

Wiring Class

Class 2


32° to 131°F (0° to 55°C)

10 - 90% RH (non-condensing)

Termination Module - DTM-VAV-DG1


The DNT-VAV-DG1 can be ordered with either a Siemens or a Belimo Actuator


44 in-lbs. (nominal torque)

Less than 35 db (A) noise level


35 in-lbs. (nominal torque)

Less than 35 db (A) noise level

Differential Pressure

0-1” H2O (0-248.8 Pa)


Flow sensor tubing must be 5/32” inside diameter


7 5/8 x 4 x 1 7/8 in. (19.2 x 10.2 x 4.8 cm) with housing

0.551 lb. (250 g) with housing

Thermostat - DNT-T103


3-value and various icons (96 total segments) with optional backlighting

Push Buttons

4 stylized momentary push buttons

Temperature Sensor

Thermistor Input - 10kΩ at 77°F (25°C)

Accuracy +/-0.36°F from 32 to 158°F

(+/- 0.2°C from 0 to 70°C)

Display resolution of 0.1°

Stability 0.24°F over 5 years (0.13°C)


1 Universal input - 10 bit (supporting 0-5v, 0-10v, 10kΩ)


3 Binary triac outputs (supporting binary, PWM or tri-state)


32-bit processor with internal A/D, Flash and RAM

Device Type

Configured as a LINKnet or subnet device

Device Addressing

Set via keypad

Communications Ports

BACnet MS/TP @ 9600, 19200, 38400 or 76000 bps (maximum of 99 devices per BACnet MS/TP segment)


Screw-type terminal connectors


5 x 3.25 x 1 in. (12.7 x 8.3 x 2.5 cm) with housing

0.3 lb. (120 g) with housing



FCC Class B


C-UL Listed

UL 916 Listed

BTL Listed