Delta Controls DNT-T103 User Manual

Document Edition 4.1 Page 1 of 41
A
PPLICATION
G
UIDE
Delta Network Thermostat: BACstat II
DNT-T103 & DNT-T221
Document Edition 4.1
Product Description
The DNT-T103 and the DNT-T221 are intelligent room thermostats with
custom 3-value, 96 segment, LCD displays. The DNT products can
communicate directly on a BACnet MS/TP network or Delta’s proprietary
LINKnet network.
They are capable of displaying a wide-range of digital or analog values,
including setpoints, temperature, air flow, heating and cooling status, fan
speed, valve and damper position, and more. When connected on a BACnet
MS/TP network the DNT-T103 and T221 function as independent BACnet
thermostats. When connected to a Controller on a LINKnet network they
provide programmable remote sensor and expanded I/O capabilities. This
version’s firmware can be flash loaded over the network, and have
termination resistors that are jumper selectable.
The DNT-T103 has 1 extra input, 3 binary outputs and a number of built-in application control strategies. The
DNT-T221 has 2 extra inputs, 2 analog and 1 binary output and built-in application control strategies. As a
result, these BACstats are capable of stand-alone control when directly connected on an MS/TP network.
Contents
OTHER RELEVANT DOCUMENTS .................................................................................................. 2
IMPORTANT
INFORMATION .......................................................................................................... 2
SETUP
& CONFIGURATION ............................................................................................................. 2
NETWORK COMMUNICATIONS ........................................................................................................... 2
D
EVICE CONFIGURATION (KEYPAD) .................................................................................................. 2
SERVICE TOOL MODE (KEYPAD) ....................................................................................................... 7
I
NPUT CALIBRATION .......................................................................................................................... 8
I
NPUT SCALE RANGES ...................................................................................................................... 8
SOFTWARE
& PROGRAMMING...................................................................................................... 9
OBJECTS............................................................................................................................................ 9
PROGRAMMING ............................................................................................................................... 12
CONTROL
FUNCTIONS ................................................................................................................... 12
O
VERVIEW ...................................................................................................................................... 12
SOFTWARE LOOP CONTROLLER ....................................................................................................... 15
SETPOINTS ...................................................................................................................................... 18
C
ONTROL DIAGRAM ........................................................................................................................ 19
CONTROL APPLICATIONS (MUX, VAV, VVT, HPU, FCU, RAD, HUM) ............................................ 20
O
UTP UT FUNCTIONS & TYPES ......................................................................................................... 28
OWS
FUNCTIONS .............................................................................................................................. 33
A
PPENDIX A: PROGRAMMING NOTES .................................................................................................... 31
A
PPENDIX B: LINKNET ......................................................................................................................... 32

Delta Controls DNT-T103 Specifications

General

Device Type	Thermostat
Communication Protocol	BACnet MS/TP
Type	Digital
Operating Temperature	0 to 50°C (32 to 122°F)
Display	LCD
Accuracy	±1°F (±0.5°C)
Mounting	Wall mount

Summary

Product Description

Setup & Configuration

Network Communications

Explains BACstat MS/TP network speed and configuration.

Flash Programming

Details flash loadable firmware and its support by Flashloader V3.33.

Device Configuration (Keypad)

Guides BACstat configuration via keypad, including PIN access and button functions.

Configuration Menu Options

Lists and describes menu items for BACstat setup, including applications and parameters.

MS/TP Connection Settings

Details MS/TP specific settings such as Device Address, Baud Rate, and DNA.

Service Tool Mode (Keypad)

Service Tool Mode User Access & Navigation

Explains how to access and navigate the Service Tool Mode without a PIN.

Service Tool Menu Options

Details the main menu and Air Balancer menu options available in Service Tool Mode.

Input Calibration

MS/TP Connection Input Calibration

Explains input calibration for MS/TP connections using local AI objects or Service Tool Menu.

Input Scale Ranges

MS/TP Connection Scale Ranges

States that only locally resident scale ranges may be used on MS/TP.

Software & Programming

Objects

Lists predefined, non-creatable objects in BACstat II products accessible over MS/TP.

System Events and Statistics

Describes event codes and counts for notable events like resets and communication failures.

Control Functions

Overview of Control Applications

Provides an overview of BACstat control applications and their functions.

Algorithm Mode

Explains algorithm modes (Unoccupied, Occupied, Lockouts) and their effect on control.

Control Diagram

Control Applications

NONE (or MUX) Application

Describes the NONE (MUX) application for remote control of outputs.

VAV Application

Details the VAV application for controlling VAV boxes, including I/O configurations.

VVT Application

Details the VVT application for controlling VVT boxes, including I/O configurations.

Heat Pump Unit (HPU) Application

Describes the HPU application for controlling Heat Pump Units with reversing valve and fan.

Fan Coil Unit (FCU) Application

Details the FCU application for controlling Fan Coil Units with fan, including I/O configurations.

Humidity Application

Details the Humidity application for simple humidifier control.

Output Functions & Types

Output Functions

Lists and describes output functions like MUX, Heating, Cooling, Fan, Compressor, Reversing Valve.

Output Types

Lists and describes output types (Binary, PWM, Analog, Flow Damper, Time Proportioned, Tri-State).

OWS Functions

Device Configuration via OWS

Details essential configuration items for BACstats on an MS/TP network via OWS.

Configuration Settings via OWS

Lists configurable BACstat settings via OWS, including Application and Output Configurations.

Control Settings via OWS

Lists control settings (Algorithm Mode, Setpoints) that can be set via OWS or GCL+.

Appendix A: Programming Notes

Configuration Variables (AV12 & AV21-23)

Warns against commanding configuration variables on the fly from GCL+ or user commands.

Commanding Variables

Advises on programming practices for commanding variables to limit network traffic.

Appendix B: LINKnet

LINKnet Configuration Menu Options

Details LINKnet configuration menu items for BACstats.

LINKnet Input Calibration

Explains LINKnet input calibration procedures for BACstats.

LINKnet Objects

Describes objects accessible over the network when BACstats are connected via LINKnet.

Programming Notes (LINKnet)

Commanding Variables (LINKnet)

Advises on programming practices for commanding variables to limit network traffic.

GCL+ Programming with Temperature Units

Shows how to specify temperature units in GCL+ programming for LCD lines 2 and 3.

GCL++ Programming & KeyPress Values

Explains how to evaluate KeyPress objects in GCL+ for BACstat button presses.