Delta Controls BACstat II - User Manual

Document Edition 1.6
Page 1 of 10
INSTALLATION GUIDE
Delta Network Thermostat: BACstat II
DNT-T221 (Rev 2.2)
Document Edition 1.6
Product Description
The DNT-T221 is an intelligent room thermostat with a custom 3-
value, 96 segment, LCD display. The DNT-T221 has the ability to
communicate on Delta’s proprietary LINKnet network or directly on an
BACnet MS/TP network.
It is 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-T221
functions as an independent BACnet thermostat. When connected to a
Delta Controller on a LINKnet network it provides programmable
remote sensor and expanded I/O capabilities.
Contents
MODEL NUMBERS & ACCESSORIES............................................................................ 2
PACKAGE CONTENTS ...................................................................................................... 2
OTHER RELEVANT DOCUMENTS................................................................................. 2
PRODUCT SPECIFICATIONS .......................................................................................... 2
BOARD LAYOUT................................................................................................................. 4
JUMPERS .............................................................................................................................. 5
MOUNTING .......................................................................................................................... 5
WIRING DIAGRAM ............................................................................................................ 6
POWER.................................................................................................................................. 7
NETWORK CABLING & REQUIREMENTS .................................................................. 7
NETWORK TOPOLOGY.................................................................................................... 8
CAUTIONS & WARNINGS ................................................................................................ 9
COMPLIANCE DECLARATIONS .................................................................................... 9

Delta Controls BACstat II Specifications

General

Communication Protocol	BACnet MS/TP
Mounting	Wall mount
Model	BACstat II
Power Supply	24 VAC
Operating Temperature	32°F to 122°F (0°C to 50°C)
Relative Humidity	non-condensing
Display	LCD
Accuracy	+/- 0.5°C (+/- 1°F)
Setpoint Range	40°F to 90°F (4°C to 32°C)

Summary

Product Description

Product Overview

Model Numbers

Lists different DNT-T221 and DNT-H121 model variations and features.

Package Contents

Details the items included in the DNT-T221 product package.

Related Documents

References other documentation relevant to the DNT-T221 installation and use.

Product Specifications

Power Requirements

Details the required 24V AC Class 2 power supply and VA rating for the DNT-T221.

Ambient Ratings

Specifies the operational temperature and humidity ranges for the DNT-T221.

Communication Ports

LINKnet Connection

Describes the communication speed and device limits for the LINKnet network.

BACnet MS;TP Connection

Details communication speeds and node limits for BACnet MS/TP networks.

Sensor and I;O Capabilities

Temperature and Humidity Sensors

Details specifications for temperature and humidity sensors, including accuracy and resolution.

Inputs and Outputs

Describes available universal inputs and analog/binary outputs for the device.

Device Technology

Device Addressing and Physicals

LINKnet Addressing

Explains how to set the address range for LINKnet connections.

BACnet MS;TP Addressing

Covers MAC address and software address ranges for MS/TP.

Physical Dimensions and Weight

Provides the size and weight specifications for the DNT-T221 device.

PCB Board Layout

Jumpers Configuration

Input Signal Type Selection

Configures the input type for sensors or binary/dry contact inputs.

Input Connection Selector

Selects between internal or external thermistor connections for input IP1.

Mounting Instructions

Wiring Diagram

Power Requirements

Network and Cabling Requirements

Network Topology Configurations

MS;TP Subnet Devices

Describes BACstats as MS/TP subnet devices with V3.21 or higher firmware.

LINKnet Devices

Explains BACstats configured as LINKnet devices for I/O expansion.

Cautions and Warnings

Compliance Declarations

FCC Compliance Information

Details FCC rules for digital devices and potential radio frequency interference.

Industry Canada Compliance

States compliance with Canadian Interference-Causing Equipment Regulations.

UL Compliance Information

Confirms product conformity to UL requirements for Energy Management Equipment.

CE Declaration of Conformity