Error! No text of specified style in document. DNS-24, DNT-T103, & DNT-T221 Application Guide
Page 18 of 35
Document Edition 3.1
CONTROL APPLICATIONS (DNT-T103 and DNT-T221 Only)
1. NONE (or MUX) – [Application (AV12) = 0]
Function: No local control strategy, allowing the outputs (via AV1 to AV3) to be directly controlled from a
remote device.
• Triac outputs may be configured as Binary (which are not delayed; their values are transferred immediately
upon being received), PWM, and Tri-state (on Outputs 1 & 2).
• Analog outputs may be configured for 0-10v actuators (DNT-T221 only).
• Outputs configured as Pulse Width Modulation require that their “Low” and “High” variables are
appropriately configured for the particular type of device the outputs are connected to. Default values of 59
and 293 are suitable for Belimo PWM actuators (representing 0.59 and 2.93 seconds respectively).
• Outputs 1 and 2 configured as a Tri-State pair require that the “Tri-State Runtime” (AV24) be configured for
the associated Tri-State actuator. The default of 120 seconds is suitable for certain Honeywell actuators.
NOTE: BACstats (particularly with I/O) that are connected to a BACnet MS/TP network are
designed to operate as stand-alone devices using a local control application. For custom
applications and MUXing purposes, connect the BACstat to a LINKnet network.
2. VAV – [Application (AV12) = 1]
Function: Control of a simple VAV box with air flow measured with a Kavlico sensor (DFT740-A) or Setra
sensor on Input 2 (0 to 1” range), a Tri-State damper on Outputs 1 and 2 (for DNT-T103) or an analog damper on
Output 1 (for DNT-T221), and various options on the remaining outputs (some no longer available in Release 3).
DNT-T103 I/O (Outputs 1 to 3 are Triacs)
Input AI1 Input AI2 Input AI3 Remote AV5 Output 1 Output 2 Output 3
Room Temp. Air Flow
(0 to 1”)
N/A Optional OAT Tri-State Flow
Damper (Open)
Tri-State Flow
Damper (Close)
Heating 1
Room Temp. Air Flow
(0 to 1”)
N/A Optional OAT Tri-State Flow
Damper (Open)
Tri-State Flow
Damper (Close)
Cooling 2
(not in R3)
Room Temp. Air Flow
(0 to 1”)
N/A Optional OAT Tri-State Flow
Damper (Open)
Tri-State Flow
Damper (Close)
Fan
Room Temp. Air Flow
(0 to 1”)
N/A Optional OAT Tri-State Flow
Damper (Open)
Tri-State Flow
Damper (Close)
None
(MUX)
DNT-T221 I/O (Outputs 1 & 2 are Analog, and Output 3 is a Triac)
Input AI1 Input AI2 Input AI3 Remote AV5 Output 1 Output 2 Output 3
Room Temp. Air Flow
(0 to 1”)
N/A Optional OAT Analog Flow
Damper
Heating 1 Heating 2
Room Temp. Air Flow
(0 to 1”)
N/A Optional OAT Analog Flow
Damper
Heating 1 Cooling 2
(not in R3)
Room Temp. Air Flow
(0 to 1”)
N/A Optional OAT Analog Flow
Damper
Heating 1 Fan
Room Temp. Air Flow
(0 to 1”)
N/A Optional OAT Analog Flow
Damper
Heating 1 None
(MUX)
Room Temp. Air Flow
(0 to 1”)
N/A Optional OAT Analog Flow
Damper
Cooling 2
(not in R3)
Heating 1
Room Temp. Air Flow
(0 to 1”)
N/A Optional OAT Analog Flow
Damper
Cooling 2
(not in R3)
Fan
Room Temp. Air Flow
(0 to 1”)
N/A Optional OAT Analog Flow
Damper
Cooling 2
(not in R3)
None
(MUX)
Room Temp. Air Flow
(0 to 1”)
N/A Optional OAT Analog Flow
Damper
None
(MUX)
None
(MUX)
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