Viconics VT8350 SERIES
BACnet and Zigbee Models Available
Smart energy management has never been easier than with the VT8350 Series Fan Coil Room Controllers. Designed for new construction and retrofit projects, these controllers dramatically decrease project delivery costs by reducing installation, configuration, and commissioning time. No complex software or tools are required to customize functionality to meet your application requirements. The Room Controllers provide all the advanced features and monitoring functions required by modern building automation systems in a simple, compact enclosure.
The VT8350 Room Controllers, part of the VT8000 family, are both application-specific AND programmable. This enables the modification of pre-configured control sequences, or the creation of entirely new control sequences for fan coil applications. Their configurable control sequences, economizer, and scheduler functionalities deliver all the flexibility necessary for optimal indoor air quality applications.
Commercial and hospitality
Suitable for both commercial and hospitality markets and systems.
7-day occupancy scheduling
2 to 4 events.
Wi-Fi option
BACnet/IP and email notification via Wi-Fi (with VCM8002V5031).
Highly configurable
LUA custom programming available.
Digital touch screen
Customizable color digital touch screen interface with multi-language support.
Advanced occupancy functions
For commercial and lodging applications.
APPLICATIONS
- Two-pipe fan coil
- Four-pipe fan coil
- 1, 2 or 3-speed fan
ECM with on/off, floating, or 0 to 10V valve outputs.
SPECIFICATIONS
| Specification | Details |
|---|---|
| Thermostat Power Requirements | Input: 24Vac ±15% recommended, Absolute Max 29.5VAC, 50/60Hz or 24Vdc ±15%. Peak device consumption: up to 6VA with CO2 sensor or Wi-Fi module. Plus Output Load (max total 94VA). Transformer maximum rating: 100VA, 4.17 A. |
| Operating Conditions | 0 to 50 °C (32 to 122°F); 0 to 95% RH non-condensing. |
| Storage Conditions | -30 to 50 °C (-22 to 122°F); 0 to 95% RH non-condensing. |
| Temperature Sensor | Local 10k NTC type 2 thermistor. |
| Temp. Sensor Resolution | ± 0.1 °C (± 0.2 °F). |
| Temp. Control Accuracy | ±0.5 °C (±0.9 °F) @ 21 °C (70 °F) typical calibrated. |
| Humidity Sensor and Calibration | Single point calibrated bulk polymer sensor. |
| Humidity Sensor Precision | Reading range from 10 to 90% RH non-condensing: 10 to 20% precision is ±10%; 20 to 80% precision is ±5%; 80 to 90% precision is ±10%. |
| Humidity Sensor Stability | <1.0% annual drift (typical). |
| Dehumidification Setpoint Range | 30 to 95% RH. |
| Occupied and Unoccupied Setpoint Range Cooling | 12 to 38 °C (54 to 100 °F). |
| Occupied and Unoccupied Setpoint Range Heating | 5 to 32 °C (40 to 90 °F). |
| Room and Outdoor Air Temperature Display | -40 to 50 °C (-40 to 122 °F). |
| Proportional Band for Room Temperature Control | Cooling & Heating: 1.8 °C (3.2 °F). |
| Binary Inputs | Dry contact across terminal BI1, BI2 and UI3 to Scom. |
| Economizer Analog Output Rating | 0 to 10 Vdc into 2k Ω resistance min. |
| Economizer Analog Output Accuracy | ±3% typical. |
| Wire Gauge | 18 gauge maximum, 22 gauge recommended. |
| WARRANTY | Limited Warranty: 18 months. |
| AGENCY APPROVALS | CULUS LISTED. UL: 61010-1 (2nd edition); CSA: 61010-1 (3rd edition); IEC: 61010-1 (3rd edition), EN 60950-1: 2006A2: 2013, UL 873, CSA 22.2 No. 24-93; 61326-1:2005; FCC: Part 15, Subpart B. |
TYPICAL LOW VOLTAGE FAN COIL APPLICATION
A diagram illustrates a typical low voltage fan coil application. It shows airflow from the Return Air, through a Filter, to a Fan Status Switch, then to a Fan Status Switch, followed by a Cooling Coil and a Heating Coil, finally exiting as Supply Air. The diagram also indicates wiring connections for a 3-Speed Fan and shows optional wireless accessories such as a BACnet/IP and email notification via Wi-Fi module, a Zigbee Pro Communication Module, a Water Leak Wireless Sensor, a CO, Wireless Module, a Door/Window Wireless Sensor, and a Wall/Ceiling Wireless Sensor. The Viconics VT8350 Low Voltage Fan Coil Terminal Equipment Controller is depicted with its touch screen interface displaying temperature and humidity information.
DIMENSIONAL DRAWING
A dimensional drawing shows the Viconics VT8350 controller with measurements: Height 4.7" (120 mm), Width 3.4" (86 mm), and Depth 1.0" (25 mm).
ORDERING INFORMATION
| PART NUMBER | DESCRIPTION |
|---|---|
| VT8350U5000B | RH, Fancoil Control, Low Voltage, BACnet MS/TP |
| VT8350U5500B | RH, PIR, Fancoil Control, Low Voltage, BACnet MS/TP |
| VT8350U5500BP | RH, PIR Room Controller, BACnet MS/TP and Zigbee |
SELECTABLE COLOR SCHEMES
Multiple selectable color schemes for the controller display are shown, including variations in temperature and humidity readings in Celsius and Fahrenheit, and different language indicators (English, French, Spanish, Chinese).
