VVT: DZNT-104D/104T/112A
Description: The VAV Zone Controller system consists of an intelligent LCD thermostat, and a remote termination module for mounting onto the VAV/VVT unit. The thermostat has an LCD display with four pushbuttons for setpoint and occupancy override, and contains a variety of configurable VAV/VVT algorithms. Each termination module comes complete with a damper actuator, optional flow sensor and housing.
Features:
- Native BACnet™ firmware
- BACnet MS/TP communications
- Microprocessor based LCD thermostat with setpoint and occupancy override control
- Field configured VAV or VVT algorithms
- Application database can be downloaded over the network
- Controller firmware can be flash loaded over the network
- Simple air balancing and commissioning with the thermostat keypad
- Quick connection between termination board and thermostat, and between termination boards via standard CAT3 or higher (CAT5, CAT5e, CAT6) cable with RJ45 termination
- Easy-to-mount housing with damper assembly
- True differential pressure sensor for VAV models
- Reliable, industry standard actuator
- Service port
Application: The DZNT VAV product line is suitable for controlling nearly all basic VAV, fan powered VAV or VVT sequences with choices of 3-stage digital reheat, tristate with 2nd stage digital reheat, or analog with 2nd stage digital reheat.
Some of the advanced features include auto heat/cool changeover, digital time clock or motion sensor input, timed overrides for occupancy handling, and configurable reverse acting digital reheat stages.
Consult the application guide for complete list of algorithms.
Ordering: Order the DZNT controller with the desired options according to the following product numbers:
VAV Models
- DZNT-V104D-xx—3-Stage Digital Reheat
- DZNT-V104T-xx—Tri-state with 2nd Stage Digital Reheat
- DZNT-V112A-xx—Analog with 2nd stage Digital Reheat
VVT Models
- DZNT-104D-xx—3-Stage Digital Reheat
- DZNT-104T-xx—Tri-state with 2nd Stage Digital Reheat
- DZNT-112A-xx—Analog with 2nd stage Digital Reheat
Actuator Options: Order the actuator option by adding the following:
- DZNT-xxxx—No Actuator
- DZNT-xxxx-A—Siemens Actuator
- DZNT-xxxx-AF—Siemens Actuator with Feedback
- DZNT-xxxx-AB—Belimo Actuator
- DZNT-xxxx-ABF—Belimo Actuator with Feedback
Accessories:
- DZNR-768—Network Repeater
- ADP45-MSTP-Y—Network Splitter
- ADP45-MSTP-EOL—End-of-Network Terminator
- ADP45-MSTP-TB-Y—2-wire MS/TP Adapter
- ADP45-MSTP-BYPASS—Device Bypass Terminator
BACnet Device Profile
BACnet Application Specific Controller (B-ASC)
Combined Power Requirements
24 VAC
47-63 Hz
15 VA not including output loading
Wiring Class
Class 2
Technology
32-bit processor with internal A/D, Flash memory and RAM
LCD
3-value and various icons (96 total segments)
Push Buttons
4 stylized momentary push buttons
Inputs
Temperature Sensor: Thermostat
± 0.36 °F from 32 - 158°F
(± 0.2 °C from 0 - 70°C)
Differential pressure 0-1” H2O airflow sensor(VAV models)
10kΩ Dry contact input
Optional actuator feedback sensor
Outputs
2 - 24 VAC for tri-state damper
1 - 24 VAC for fan
DZTM-x104D
3 - 24 VAC for external powered reheat
DZTM-x104T
2 - 24 VAC for Tri-state reheat
1 - 24 VAC for internal powered reheat
DZTM-x112A
1 - 0-10 VDC for analog reheat
1 - 24 VAC for internal powered reheat
Actuator
- Siemens
- 44 in-lb. (nominal torque)
-
- Belimo
- 35 in-lb. (nominal torque)
Device Type
Subnet
Communications
BACnet MS/TP @ 9600, 19200, 38400 or 76800 bps (default)
Note: maximum of 50 devices per BACnet MS/TP segment without a repeater or up to 99 devices, with a DZNR-768 repeater
Device Addressing
Set via keypad
Connectors
Removable screw-type terminal connectors for I/O
RJ45 quick connect between thermostat and termination board, and between termination boards
Tubing (VAV Models)
Flow sensor tubing must be 3/16” (5 mm) inside diameter
Ambient
32° to 131°F (0° to 55°C)
10 - 90% RH (non-condensing)
Dimensions
Thermostat
5 x 3.25 x 1.25 in. (11.4 x 7 x 2.5 cm)
0.1 lb. (50 g)
Termination Board
9.37 x 4.71 x 1 in (12.7 x 8.3 x 2.5 cm)
0.55 lb. (250 g.) with housing
Compliance
CE
FCC
Listings
UL 916