Liên hệ

Mã thiết bị: DNT-T221-FCU

Hãng sản xuất: Delta Controls

Xuất xứ: Canada

Liên hệ: Mr Chương - 0983452446


The DNT-T221BX-FCU is an intelligent room thermostat package for fancoil units with multi-speed fans. It consists of an intelligent LCD thermostat (DNT-T221BX) for control and BACnet communications, and an analog to binary output for fan control. The DNT-T221BX communicates on Delta’s LINKnet network or directly on a BACnet MS/TP network. It displays a wide-range of digital or analog values including set- points, temperature, heating and cooling status, fan speed and valve position. 



The DNT-T221BX-FCU is designed to be a low cost solution for control of a Fan Coil Unit utilizing a multi- speed fan. 

Features (BACstat)

—Native BACnet™ firmware
—BACnet MS/TP or LINKnet communications —Configurable 3-value, 96 segment, LCD display —4 Configurable push buttons
—Controller firmware can be flash loaded over the

—Network termination is jumper selectable on each

—Derived Network Addressing (DNA) for simple

integration into a standard network architecture —Field selectable applications
—Service port

Features (Relay Board)

—5 Output board for multi-speed fans and 2 and 4 pipe configurations

—Diagnostic LED’s
—Fan Speed (Hi, Medium, Lo) —Cooling Mode
—Heating Mode

—Step Down Transformer

The DNT-T221BX-FCU has a built-in algorithm specially designed for this purpose. The controller can be used with single stage digital heat or cool or in a switched mode. 

Specifications BACstat

BACnet Device Profile

BACnet Application Specific Controller



3-value and various icons (96 total segments)

with optional backlighting Temperature Sensor

Thermistor Input - 10k½ at 77°F (25°C) Accuracy +/-0.36°F from 32-158°F

(+/- 0.2°C from 0-70°C)

Display resolution of 0.1°

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

Space temperature input (internal)

Occupancy Input - 10 bit (0-5v, 0-10v, 10k½) Window Contact Input - 10 bit (0-5v, 0-10v,


Supply air temperature - 10 bit (0-5v, 0-10v,

Discharge water temperature - 10 bit (0-5v, 0

10v, 10k½)* Outputs

Fan speed - 0-10 VDC @ 20mA maximum Heating /Cooling (normally closed) - 0-10 VDC

@ 20mA maximum
Electric Reheat - triac (supporting binary, pwm,

tri-state )*
Valve Changeover - triac (supporting direct or

reverse )**

*2 Pipe configuration only

**4 Pipe configuration only 

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0983 452 446