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Delta Controls DNT-T103 Installation Manual

DNT-H103B\ DNT-T103-UL864

Made by: Delta Controls
Type: Installation Guide
Category: Thermostat
Pages: 12
Size: 0.69 MB

 

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I

NSTALLATION 

G

UIDE

Delta Network Thermostat: BACstat II

DNT-T103 (Rev 4.1)

Document Edition 1.9 

 

Product Description 

The DNT-T103 is an intelligent room thermostat with a custom 3-
value, 96 segment LCD display.  The DNT-T103 can communicate on 
a BACnet MS/TP network or on Delta’s proprietary LINKnet network. 

The DNT-T103 can display 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 
functions as an independent BACnet thermostat.  When connected to a 
controller, on a LINKnet network, it provides a programmable remote 
sensor and expanded I/O capabilities. This version’s firmware can be 
flash loaded over the network, and has a termination resistor that is 
jumper selectable. 

 

 

 

Contents 

 

MODEL NUMBERS............................................................................................................. 2 
PACKAGE CONTENTS ...................................................................................................... 2 
OTHER RELEVANT DOCUMENTS................................................................................. 2 
PRODUCT SPECIFICATIONS .......................................................................................... 2 
PCB BOARD LAYOUT........................................................................................................ 4 
JUMPERS .............................................................................................................................. 5 
MOUNTING .......................................................................................................................... 6 
WIRING DIAGRAM ............................................................................................................ 6 
POWER.................................................................................................................................. 7 
NETWORK CABLING & REQUIREMENTS .................................................................. 7 
NETWORK TOPOLOGY.................................................................................................... 9 
CAUTIONS & WARNINGS ................................................................................................ 9 
COMPLIANCE DECLARATIONS .................................................................................. 10 

 

Document Edition 1.9

 

 

Page 1 of 12

 

 


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 DNT-T103 (Rev 4.1) Installation Guide

 

Model Numbers 

 

Features 

DNT-T103 

DNT-H103B 

DNT-T103-UL864 

Internal Thermistor Input 

 

 

 

Internal Humitity Input 

 

 

 

Additional I/O (1 IP and 3 OP) 

 

 

 

Backlighting Option 

B

 

 

 

External Input Terminator 

Option 

X

 

 

 

Button Icons 

INT

 

INT

 

INT 

An appended button icon code must be included to specify the desired icons embossed on the buttons as 
follows: 
[

default

] Bottom 2 buttons are 

 and 

 (Setpoint Adjust), top 2 are 

OFF

 and 

ON

 

INT 

Bottom 2 buttons are 

 and 

 (Setpoint Adjust), top 2 are 

O

 and 

I

 – 

International

 

You need not specify button icons if you want the default, but must specify INT if you want the international 
button icons (i.e., DNT-T103-INT). 
 

Package Contents 

 

• 

Delta Network Thermostat: BACstat II Product, 

DNT-T103 (Rev 4.1)

 

• 

DNT-T103 (Rev 4.1)

 Installation Guide 

 
 

Other Relevant Documents 

 

• 

Delta Controls Wiring and Installation Guidelines 

• 

BACstat II Application Guide (for Configuration & Programming) 

• 

ORCAview Operator Guide 

• 

ORCAview Technical Reference Manual 

• 

BACstat II, DAC and DCU Release Notes 

 
 

Product Specifications 

 

Power Requirements 

• 

24VAC, 50/60 Hz (Class 2) 

• 

41 VA maximum (with internally powered triacs at full load) 
(3 VA with triacs externally powered) 

Ambient Ratings 

• 

0°C to 40°C (32°F to 104°F) 

• 

10 to 90% RH (non-condensing) 

 
 
 
 

Page 2 of 12

 

 

Document Edition 1.9

 

 


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Delta Controls 

Communication Port 

LINKnet Connection 

• 

Communications Speed @ 76,800 bps 

• 

Up to 12 Devices per segment (depending on the controller), only two of which can be DNT or 
DFM devices 

BACnet MS/TP Connection 

• 

Communications Speed @ 9,600 or 19,200 or 38,400 or 76,800 bps (the default) 

• 

Maximum of 99 nodes per MS/TP segment (50 without a repeater) 

• 

Firmware can be flash loaded over the network 

Temperature Sensor (IP1) 

• 

Thermistor Input – 10,000 ohm @ 77 ºF (25 ºC) 

• 

Accuracy of +/- 0.36 ºF from 32 - 158 ºF (+/- 0.2 ºC from 0 - 70 ºC) 

• 

Display Resolution of 0.1 ºF or ºC 

• 

Stability of 0.24 ºF over 5 years (0.13 ºC) 

• 

Optional Termination point for an External Thermistor on Input 1 

• 

Jumper Selectable for Internal or External Thermistor 

• 

Use a standard 10 K

 Thermistor (10,000 ohm @ 77 ºF / 25 ºC) 

Humidity Sensor (DNT-H103B Model Only) 

• 

Accuracy of +/-2% RH from 0-100% RH (25ºC, V

SUPPLY

 = 2.6Vdc) 

• 

Display Resolution of 0.1 % 

• 

Stability of +/- 1% RH typical @ 50% RH over 5 years 

*

Note:Extended exposure to >90% RH causes a reversible shift of 3% RH

 

Input (Additional) 

• 

1 Universal Input (10 bit), jumper configurable for the following input types: 

 

0-5 VDC 

 

0-10 VDC 

 

10 K

 Thermistor 

 

Dry Contact (using 10 K

 Thermistor jumper setting) 

Outputs 

• 

3 Binary Triac Outputs 

 

Switching 24 VAC @ 0.5 Amp maximum per output 

 

Leakage Current per Triac is 100 

µ

 

Jumper Selection for Internal or External Power 

 

Software Configurable for Binary, PWM, Time Proportioned, or Tri-State Actuators 

Technology 

• 

32-bit Processor c/w internal A/D, Flash, and RAM 

• 

3-value LCD c/w icons (96 total segments) and optional backlighting 

• 

4 stylized momentary push buttons with tactile feedback 

Device Addressing 

LINKnet Connection 

• 

Set via Keypad Configuration Setup 

• 

Address Range: 1 to 12 

 

 

Document Edition 1.9

 

 

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 DNT-T103 (Rev 4.1) Installation Guide

 

BACnet MS/TP Connection 

• 

Set via Keypad Configuration Setup, or Software Setup 

• 

Keypad MAC Address Range: 1 to 99 per network segment 

• 

Software Address Range: As per the BACnet standard 

• 

Supports DNA – Delta’s intuitive addressing scheme 

Size 

• 

5” x 3.25”x 1” (12.7 cm x 8.3 cm x 2.5 cm) 

Weight 

• 

0.3 lb. (134 g) 

 

PCB Board Layout 

 

 

 

 

 

Page 4 of 12

 

 

Document Edition 1.9

 

 


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Delta Controls 

Jumpers 

 

10K

5V

10V

 

 

INPUT SIGNAL TYPE 
 
The input type is selected by placing the jumper in the correct location on 
the Input Type Selector Block.  The diagram to the left shows the factory 
default selection of 10 K

 
10K 

 For 10 K

 Thermistor temperature sensors, as well as Binary 

or Dry Contact inputs. 

 
5V 

  For sensors and other field devices that use a 5 VDC signal. 

 
10V 

  For sensors and other field devices that use a 10 VDC signal. 

 

INTERNAL

EXTERNAL

 
 

BINARY OUTPUT POWER SOURCE 
 
The binary triac outputs can be selected to use either an internal or 
external power source by placing the two jumpers in the correct locations. 
The diagram to the left shows the factory default selection of Internal 
Power Source. 
 
Internal    24 VAC Power is provided internally from within the board 

right to the output terminals.  No external transformer is 
required.  The associated triac outputs are “hot” contacts.  Note 
that the power supply should be sized appropriately to handle 
the additional loading. 

 
External    Power needs to be provided externally to the board from a 

nearby transformer appropriately connected to the output wiring.  
The associated triac outputs are 

not

 “hot” contacts, except by 

means of the external transformer. 

 
NOTE: Triacs are solid-state components that are only appropriate for 
switching 24 VAC.  They cannot be used to switch DC voltage.  They also 
have a small leakage current and may not be appropriate for certain “dry 
contact” applications. 
 

INTERNAL

EXTERNAL

 

INPUT CONNECTION SELECTOR – DNT-T103X MODELS ONLY 
 
This jumper is used to select whether the internal Thermistor sensor or a 
remotely located Thermistor is connected to IP1.  The diagram to the left 
shows the factory default selection of the Internal 10 K

 Thermistor. 

 
External    For connecting a remotely located 10 K

 Thermistor 

temperature sensor to IP1, which is wired to the connection 
terminals provided. 

 
Internal    For connecting the internal 10 K

 Thermistor temperature 

sensor to IP1. 

Document Edition 1.9

 

 

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 DNT-T103 (Rev 4.1) Installation Guide

 

TERM

NO TERM

 

NETWORK TERMINATION RESISTOR 
This jumper is used to select the termination resistor at each end of each 
MS/TP network segment.  The diagram to the left shows the factory 
default selection of No Term.  

Mounting 

 
The BACstat II backplate is designed for mounting directly on standard North American, European or 
Australian electrical boxes. 
 
 

Wiring Diagram 

 
 

 

Warning: 

The network shield and any other bare wires should be bent back and taped to ensure that they 
do not come into contact with the board electronics and cause a short.  Otherwise you run the 
risk of damaging the BACstat. 

24~ GND IP2

+

-

PWR

NET

INPUT

OP1

COM

1&2 OP2

COM

3

OP3

24 VAC Power
Connection
Input 2
Connection

BACKPLATE

Output 1
Connection
Output 2
Connection
Output 3
Connection

Network
Connection

Page 6 of 12

 

 

Document Edition 1.9

 

 


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Delta Controls 

 

Notes: 

1.  Ensure you use the recommended balanced cable for the network and follow and follow the documented 

procedures within 

Delta Controls Wiring and Installation Guidelines

 for MS/TP or LINKnet networks. 

2. Do 

not

 use 4-wire multi-conductor cable for network and power, as it will not meet the balanced cable 

requirements for the MS/TP or LINKnet networks.  Use two separate cables: one for the network and the 
other for power. 

3.  Do not terminate the network shield on the BACstats, but ensure shield conductivity is maintained along the 

network from end-to-end with wire nuts as necessary. 

4.  If the same power source is used for more than one device, ensure that the transformer is properly sized for the 

rated VA and that the same polarity is observed from device to device. 

Power 

 
The DNT-T103 requires a 24V AC Class 2 power supply. The VA requirements vary depending on the 
output configuration as follows: 
 

41 VA maximum (with internally powered triacs at full load) 

 

3 VA (with triacs externally powered) 

More than one device – not including DCUs or V2 products – may be connected to the same transformer, if 
the transformer is properly sized (including line losses), and the polarity is observed between controllers (in 
regards to 24~ and GND).  The transformer must 

ONLY

 be used to provide power to other MS/TP 

or

 

LINKnet devices and field devices powered through its outputs.  Auxiliary field devices (i.e., 4-20 mA 
devices) that don’t use ½ wave rectification must be powered separately.   
 
For more information refer to the 

Delta Controls Wiring and Installation Guidelines

 

Network & Cabling Requirements 

 
Adhere to the following network and cabling requirements to ensure network stability and reliable communications, 
particularly at high speeds on the RS-485 MS/TP or LINKnet networks. 

 

Item 

Description 

Cabling 

For MS/TP and LINKnet networks it is recommended that you use network cabling that 
matches the following specifications: 

• 

Balanced 100 to 120 

 nominal impedance Twisted Shielded Pair (TSP) Cable 

• 

Nominal capacitance of 16 PF/FT or lower  

• 

Nominal velocity of propagation of 66% or higher 

Topology 

For MS/TP and LINKnet networks, ensure the cable is installed as a 

daisy-chain

 from one 

device to the next. 

Max. Nodes 

• 

MS/TP: The maximum number of devices per MS/TP network without any repeaters is 

50

• 

LINKnet: Up to a maximum of 12 Devices (depending on the controller), only two of 
which can be DNT or DFM devices. (Refer to the Appendix called 

Working with MS/TP 

and LINKnet 

in the 

Technical Reference Manual

 for more information.) 

Termination 

• 

MS/TP: A termination resistor must be jumper selected at each end of each MS/TP network 

Document Edition 1.9

 

 

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 DNT-T103 (Rev 4.1) Installation Guide

 

Boards 

segment.  Ensure you do not overlook this in laying out your network architecture. 

• 

LINKnet: Jumper select a termination resistor on each end of the network when there 
are more than 2 nodes. Termination resistors do not need to be installed for one or two 
nodes. 

Repeater 

• 

MS/TP: A repeater (RPT-768) is not necessary unless more than 50 nodes will be installed 
on a network 

or

 you need to extend the network beyond 4000 ft (1220 m). 

• 

LINKnet: Repeaters should not be necessary.  Ensure the maximum distance is no 
more than 1000 ft (300 m). 

For more information refer to the 

Delta Controls Wiring and Installation Guidelines

 

Page 8 of 12

 

 

Document Edition 1.9

 

 


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Delta Controls 

Network Topology 

 

1.  BACstats Configured as MS/TP Subnet Devices 

With V3.21 firmware or higher, one possible MS/TP network architecture has the MS/TP devices configured as 
Subnet devices, which allows BACstats to reside on the MS/TP network with other Subnet devices.  Note that 
V3.21 requires a DCU, while V3.22 or higher may use any System Controller instead. 

 

2.  BACstats Configured as LINKnet Devices 

The BACstat may reside on LINKnet instead of MS/TP.  However, this requires a controller that supports a 
LINKnet network for I/O expansion.  The maximum LINKnet devices with or without I/O depends on the 
controller.  All built-in applications must be disabled, but the I/O may be muxed (with V3.22 firmware). 

DCU/DSC

(System Device)

BACnet (MS/TP) - Level 3 Network (Subnet)

DAC

(Subnet

Device)

TRM

DAC

(Subnet

Device)

TRM

Level 4 

Network 

(LINKnet)

 16x16 Controller
 12x12 Controller
 12x8 Controller
 6x6 Controller
 Room Controller
 VAV/VVT Controller
 Lighting Controller
 BACstat I
 BACstat II

  (with or without I/O)

 Input Field Modules

Subnet Devices

 DSC-1616EX [DCU]
 DSC-1616(H/E)
 DSC-1212(H/E)
 DSC-1280(H/E)
 DSC-T305

System Devices

RS-485

NET1

NET2

NET1

NET2

RS-232

 BACstat I
 BACstat II

  (with No I/O)

 BACstat II

  (with muxed I/O)

 I/O Field Modules

LINKnet Devices

TRM

Level 4 

Network 

(LINKnet)

LINKnet Notes:

1. Ensure you use the recommended 

balanced cable.

2. Ensure the cable is installed as a daisy-

chain from one device to the next. (1000' 
or 300m maximum).

3. *Ensure you jumper select a MS/TP 

termination resistor when you have more 
than 1 or 2 devices.

4. Depending on the controller, up to 12 
devices are supported on a LINKnet 
network, with limitations on how many of 
these may have I/O.  (Refer to the 
Technical Reference Manual.)

ORCAview 

OWS

DFM

Ethernet Note:

If the DCU or DSC has Ethernet capability, it may exist on an 
Ethernet network with other controllers in the same building, on which 
the ORCAview OWS could reside as well (instead of PTP).

PTP

MS/TP Notes:

1. Ensure you use the recommended balanced cable.
2. Ensure the cable is installed as a daisy-chain from one 

device to the next (4,000' or 1220m maximum).

3. *Ensure you jumper select a termination resistor on each 

end of each MS/TP network. 

4. The maximum nodes per MS/TP network is 50 without a 

repeater or up to 99 with at least one repeater (RPT-768).

Network Diagram 

 (with V3.22 Firmware)

* Note 3

 
 

 

 

Document Edition 1.9

 

 

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 DNT-T103 (Rev 4.1) Installation Guide

 

 

Cautions and Warnings 

The DNT-T103 BACstat II is an electrostatically sensitive device. An ESD protection (ground 
strap) should be unnecessary if sufficient care is taken in handling because the electronics are 
contained within the product housing. 
 

 

UL 864 Specific Considerations 

 

• 

Use the transformer by Core Components Inc., Model No. 120-024-100-2TF-CB to power the device. 

• 

Use only UL Listed Class 2 Power Supplies for auxiliary field devices. 

 

 

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Document Edition 1.9

 

 


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Delta Controls 

 

Compliance Declarations 

FCC Compliance Information 

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to 
Part 15 of the FCC Rules.  These limits are designed to provide reasonable protection against harmful 
interference in a residential installation.  This equipment generates, uses, and can radiate radio frequency 
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to 
radio communications.  However, there is no guarantee that interference will not occur in a particular 
installation.  If this equipment does cause harmful interference to radio or television reception, which can be 
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one 
or more of the following measures: 

• 

Reorient or relocate the receiving antenna. 

• 

Increase the separation between the equipment and receiver. 

• 

Connect the equipment into an outlet on a circuit different from that to which the receiver is 
connected. 

• 

Consult the dealer or an experienced radio/TV technician for help. 

 

Industry Canada Compliance Statement 

ICES-003   This Class B digital apparatus meets all requirements of the Canadian Interference-Causing 

Equipment Regulations. 

 

Cet appareil numérique de la Classe B Respecte toutes les exigences du Règlement sur le matérial 
brouiller du Canada. 

 

UL Compliance Information

 

 

 

 

This product conforms to the following UL requirements: 

• 

UL916: Energy Management Equipment 

• 

UL 864: Control Units and Accessories for Fire Alarm Systems 

• 

CAUTION – Risk of Electric Shock – More than one disconnect switch may 
be required to de-energize the equipment before servicing 

• 

All terminals are acceptable for Class 2 circuit connection only 

• 

CAUTION – Input Class 2 Power Supplies are interconnected.  To Reduce 
the Risk of Fire or Electric Shock, Use only Class 2 sources Suitable for 
Interconnection 

• 

Use Copper Conductor Only 

• 

Select an external power supply that is certified for safety for the correct 
destination country and that has an output rating, which is considered an NEC 
Class 2 or Limited Power Source with the rating not to exceed 30 V rms, 42.4 
V peak, 100 VA. 

• 

Apply minimum 6.0 lb-in torque for tightening field wires into the terminal 
blocks. 

 

Document Edition 1.9

 

 

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 DNT-T103 (Rev 4.1) Installation Guide

 

Page 12 of 12

 

 

Document Edition 1.9

 

CE - DECLARATION OF CONFORMITY 

 

according to ISO/IEC Guide 22 and EN 45014 

 
 

Manufacturer's Name: 

Delta Controls  

 
Manufacturer's Address: 

17850 56

th

 Avenue 

 

   

Surrey, British Columbia 

  

 

Canada 

  

 

V3S 

1C7 

 

 

 

declares that the product (s): 
 

Product Name: 

BACstat II - Binary 

 
Model Numbers: 

DNT-T103 

 
Product Options: 

All 

 

 
conforms to the following Product Specifications: 
 

EMC:

 

 

 

 

 

EN 55022:1994 

Radiated and Conducted Emissions 

Class B 

 

 

 

 

EN 50082-1:1997 

Generic Immunity Standard 

 

 

EN 61000-4-2:1995 + A1:1999  ESD Immunity 

Level A  

 

 

EN 61000-4-3:1996 

RF Electromagnetic Field Immunity 

Level A 

 

 

ENV 50204:1995 

RF Electromagnetic Field Immunity (Keyed) 

Level A 

 

 

EN 61000-4-4:1995 

EFT/Burst Immunity 

Level B 

 

 

EN 61000-4-5:1995 

Surge Immunity 

Level B 

 

 

EN 61000-4-6:1996 

Conducted RF Disturbances Immunity 

Level A 

 

 

EN 61000-4-11:1994 

Voltage Dips / Interruptions 

Level B/C 

 
Supplementary Information: 

 

The product(s) herewith comply with the requirements of the EMC Directive 

89/336/EEC.  The product(s) were tested in a typical configuration. 

 
 

  

Lee 

Dickson  

 

 

Quality Assurance Manager