Delta Controls BACstat II Series User Manual

Error! No text of specified style in document. DNS-24, DNT-T103, & DNT-T221 Application Guide
Page 20 of 35
Document Edition 3.1
3. VVT – [Application (AV12) = 2]
Function: Control of a simple VVT box with 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 (of which some
options are no longer available in Release 3 firmware).
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. N/A Optional OAT Tri-State
Damper - Cool
(Open)
Tri-State
Damper - Cool
(Close)
Heating 1
Room Temp. N/A Optional OAT Tri-State
Damper - Cool
(Open)
Tri-State
Damper - Cool
(Close)
Cooling 2
(not in R3)
Room Temp. N/A Optional OAT Tri-State
Damper - Cool
(Open)
Tri-State
Damper - Cool
(Close)
Fan
Room Temp. N/A Optional OAT Tri-State
Damper - Cool
(Open)
Tri-State
Damper - Cool
(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. N/A Optional OAT Analog Damper
(Cooling 1)
Heating 1 Heating 2
Room Temp. N/A Optional OAT Analog Damper
(Cooling 1)
Heating 1 Cooling 2
(not in R3)
Room Temp. N/A Optional OAT Analog Damper
(Cooling 1)
Heating 1 Fan
Room Temp. N/A Optional OAT Analog Damper
(Cooling 1)
Heating 1 None
(MUX)
Room Temp. N/A Optional OAT Analog Damper
(Cooling 1)
Cooling 2
(not in R3)
☺
Room Temp. N/A Optional OAT Analog Damper
(Cooling 1)
Cooling 2
(not in R3)
Fan
Room Temp. N/A Optional OAT Analog Damper
(Cooling 1)
Cooling 2
(not in R3)
None
(MUX)
Room Temp. N/A Optional OAT Analog Damper
(Cooling 1)
None
(MUX)
None
(MUX)
NOTE: For fan-powered boxes series fans should always be configured for continuous
operation – never intermittent or the fan could run backwards on startup. And, in order for
a parallel fan to be properly sequenced it should generally be configured as the 1st stage of
heating (and wired to OP1), rather than as a fan.
Setup Parameters
Setup Variable Function Notes
AV24 Damper Runtime (Tri-state or Analog) Default of 120 seconds
AV25 N/A
AV26 Damper Minimum Damper Minimum Position
AV27 Damper Maximum Damper Maximum Position
AV28 PWM minimum value or Binary On Delay
(or Binary Off Delay for a Fan)
Depends on OP3 configuration
AV29 PWM maximum value or Time Proportioned
Heating Controller Limit
Depends on OP3 configuration

Delta Controls BACstat II Series Specifications

General

Brand	Delta Controls
Model	BACstat II Series
Category	Thermostat
Language	English