Honeywell 00010 - User Manual

TC300B/TC320B

THERMOSTAT

CONNECTED DEVICE FOR

COMMERCIAL BUILDINGS

TC300B and TC320B Thermostats are

advanced, highly configurable devices

providing building automation connectivity

well-suited for indoor commercial building

applications. These products have flexible

I/O that will satisfy the needs of most 2-pipe

or 4-pipe fan coil applications. Supported

functions include dehumidification w/reheat

using an embedded humidity sensor, auxiliary

heat functions, and more rapid transitional

2-pipe system seasonal changeover.

TC300B supports BACnet MS/ TP and Modbus communications via RS485 bus and TC320B supports BACnet

MS/ TP and BACnet IP via Wi-Fi and RS485 bus as is needed for typical HVAC building control systems. TC320B
also has Bluetooth connectivity feature. Both Wi-Fi and RS485 bus are used to facilitate future firmware updates
and enhanced functionality as they are released to the market. The integral intelligent control algorithms plus
scheduling help to achieve the perfect balance between Energy Efficiency and Comfort. Both thermostats utilize
an attractive, color, capacitive-touch screen interface providing an intuitive configuration process with minimal
installer training. This functionality is enhanced through the usage of embedded help screens reducing reliance

on technical manuals for complex installation. Both TC300B and TC320B share the same design, features, and
technical parameters. However, the TC320B variant has the wireless feature to support Wi-Fi connectivity.

FEATURES AND HIGHLIGHTS

• Color, capacitive-touch screen display

for intuitive, fast commissioning
and exceptional user experience.

• Multiple, configurable user types

with customizable privileges to
prevent unauthorized usage.

• Embedded system monitoring screen

for equipment and I/O status.

• Customizable daily schedule

for Occupancy set points, up to
10 Holidays including floating,
and up to 10 special events.

• Advanced commercial control

algorithms such as auto changeover.

• Customizable inactive display

modes, Auto dim display,
always on, or dark mode.

• An LED ring indicator to show

the operational status.

• Real-Time Clock time keeping

accuracy with 72-hour
retention during power loss.

• Thermostat can be configured

via HMI or BACnet.

• Wi-Fi connectivity for TC320B variant.

EQUIPMENT CONTROL

AND FEATURES

• Fan coil, On/Off Valve, Floating

Valve, Modulating Valve, and
6-Way Modulating Valve.

• Discharge Air Control
• 1-3 or variable speed fan
• Dehumidification with

and without reheat.

• Enhanced 2-pipe fan coil functionality

during seasonal or system changeover
providing heating or cooling
functionality before CW/HW has reached
optimal operating temperature.

• Service mode for manually enabling

outputs for faster diagnostics
and equipment testing.

• Auxiliary heating options supporting

peripheral or supplemental types

• Auto mode to switch between heating

and cooling according to the
current space temperature

• Staging control, PID Tuning, DAT

Lockout, Modulating control

• System Switch and

Ventilation options.

• Integration with various external wired

sensor types including Discharge air,
Drain pan, occupancy, Proof or airflow,
Space temp, CO2, and Humidity.

• Complies with ASHRAE guideline

36-2021, Section 5.22 sequence
of operations for high-performance
operation when using floating/
modulating valves and multi-
speed/variable speed fan.