Datasheet Content
TC300 THERMOSTATS
CONNECTED DEVICE FOR
COMMERCIAL BUILDINGS
TC300 thermostat models are advanced,
highly configurable devices providing building
automation connectivity well suited for
commercial building applications. Supported
equipment types include 2/4-Pipe FCU, 1H/1C
conventional, and 2H/1C heat pump plus water
source heat pump.
The TC300 models support BACnet MS/TP and
Modbus communications, while the TC320
models also support BACnet IP via Wi-Fi.
All models have intelligent control algorithms, scheduling, and an intuitive touchscreen interface. The B models support low
voltage power input, while the C models support line voltage power input. The TC320 variant also has Wi-Fi and Bluetooth
connectivity.
FEATURES AND HIGHLIGHTS
CONVENIENT FOR USERS • Service mode for manually enabling CONNECTED FOR
• Color, capacitive-touch screen display outputs for quicker diagnostics FACILITY MANAGERS
for intuitive, fast commissioning and equipment testing. • Multiple, configurable user types
and exceptional user experience. • Auxiliary heating options supporting with customizable privileges to
• Embedded system monitoring screen peripheral or supplemental types. prevent unauthorized usage.
for equipment and I/O status. • Auto mode to switch between • Customizable daily schedules
• Customizable inactive display heating and cooling according to include options for setting up to
modes, Auto dim display, the current space temperature. 10 recurring holidays (with support
always on, or dark mode. • Staging control, PID Tuning, DAT for floating holidays) and up to
• An LED ring indicator to show Lockout, Modulating control, 10 specific special events.
the operational status. Compressor time delay. • Up to 4 schedule events per day.
• Real-Time Clock time-keeping • System Switch and Ventilation options.
accuracy with 72-hour • Integration with various external wired
retention during power loss. sensor types including Discharge air
temperature, Drain pan, Occupancy,
EASY FOR CONTRACTORS Proof of airflow, Proof of water flow,
• Thermostat can be configured via Space temperature, Outdoor air
its own touch-screen interface temperature, Humidity, Shutdown
or a BACnet/Modbus client. sensor, and 3 custom sensors.
• Fan coil, 2H/1C Heat Pump-Air • Complies with ASHRAE guideline
Source Heat Pump, Water Source 36-2021, Section 5.22 sequence
Heat Pump (with water valve enable/ of operations for high-performance
lock-out) 1H/1C Conventional, On/ operation when using floating/
Off Valve, Floating Valve, Modulating modulating valves and multi-
Valve, and 6-Way Modulating Valve. speed/variable speed fan.
• 1-3 or variable speed fan • Advanced commercial control
• Dehumidification with algorithms such as auto changeover.
and without reheat.
• Enhanced 2-pipe fan coil
functionality during seasonal or
system changeover delivering
improved occupant comfort.
TECHNICAL SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
PARAMETER TC300B-G/TC320B-G TC300C-G/TC320C-G
Rated voltage : 24 VAC 50/60 Hz
Working Voltage range: 20-30 VAC
Power Supply Rated voltage : 100-277 VAC 50/60 Hz
UL listed class - 2 transformer or IEC 61558 listed
transformer
Standby Power Consumption
(Display On, All DOs off, All 1.5 VA@24 VAC 3.3 VA@Rated voltage
UIOs As Input)
1200 VA@120 VAC
96 VA
Max. Load 1500 VA@240/277 VAC
(all DOs ON)
(all DOs ON)
Rated Impulse Voltage 500 V 2.5 KV (Overvoltage Category II)
Pollution Degree 2
Operation Method Type 1.B Action
DO/DIO Combined Max.
Total current cannot exceed 4 A Total current cannot exceed 10 A
Current Limit
USER INTERFACE
PARAMETER SPECIFICATIONS
Display Type Capacitive touch TFT, 320x240 pixels, 2.4 in. diag.
Backlight LCD (Dimmable)
LED Color Ring Blue (cooling), Orange (heating)
OPERATING ENVIRONMENT
PARAMETER SPECIFICATIONS
Ambient Operating
Range: 32 to 122 °F (0 to 50 °C)
Temperature
Ambient Operating Humidity 10 to 90 % relative humidity (non-condensing)
Storage Temperature -40 to 150 °F(-40 to 65.5 °C)
Protection Class IP20
ONBOARD SENSORS
PARAMETER SPECIFICATIONS
TC300B-G:
±1.5 °F (0.8 °C) from 32 to 122 °F (0 to 50 °C)
±0.8 °F (0.45 °C) with 95 % confidence from 60 to 85 °F (15 to 30 °C)
Temperature Accuracy
TC320B-G, TC300C-G, TC320C-G
±1.5 °F (0.8 °C) from 32 to 122 °F (0 to 50 °C)
±0.9 °F (0.5 °C) with 95 % confidence from 60 to 85 °F (15 to 30 °C)
Temperature Control Accuracy ±1.5 °F (0.8 °C) from 60 to 85 °F (15 to 30 °C), all models.
Temperature Display Precision 1 °F (0.5 °C), all models.
TC300B-G
±3 % RH from 20 to 80 % RH @ 25 °C
Humidity Accuracy
TC320B-G, TC300C-G, TC320C-G
±5 % RH from 20 to 80 %RH @ 25 °C
Humidity Display Precision 1 % RH, all models.
TC300 Thermostats Product Datasheet | buildings.honeywell.com | 2
COMPLIANCES
SKU TC300B-G TC320B-G TC300C-G TC320C-G
Certificates CE, FCC, ICES, UL/cUL, RoHS, REACH, Prop65 CE, FCC, ICES, RoHS, REACH, Prop65
EN 60730-1 EN 60730-1 EN 60730-1 EN 60730-1
EN 60730-2-9 EN 60730-2-9 EN 60730-2-9 EN 60730-2-9
UL60730-1 UL60730-1 Title 47 part 15 subpart B Title 47 part 15 subpart B
UL60730-2-9 UL60730-2-9 ICES-003 Title47 part15 subpart C
Title 47 part 15 subpart B Title 47 part 15 subpart B ICES-003
ICES-003 Title47 part15 subpart C RSS247
Standards ICES-003 EN 300 328
RSS247 EN 301 489-1
EN 300 328 EN 301 489-17
EN 301 489-1 EN 62479
EN 301 489-17 EN 62311
EN 62479
EN 62311
WIRED AND WIRELESS TECHNOLOGIES
PARAMETER SPECIFICATIONS
SylkTM
Honeywell SylkTM, 2-wire Bus
BACnet MS/TP RS485 (9.6, 19.2, 38.4, 76.8, 115.2 Kbps)
Modbus RTU RS485 (1.2 to 115.2 Kbps)
BACnet IP (TC320B/TC320C) Over Wi-Fi
IEEE802.11 b/g/n
NONE
WPA_PSK
Wi-Fi 2.4 GHz (TC320B/
WPA_WPA2_PSK
TC320C)
WPA2_PSK
WPA2_WAP3_PSK
WPA3_PSK
BLE 5.3 Class 2
Bluetooth (TC320B/TC320C)
IEEE802.15.4 Open Thread
EIRP INFORMATION
STANDARD MAX EIRP
Wi-Fi 2.4 GHz for CE 20 dBm
BLE for CE 10 dBm
TC300 MODELS
WIRED
SKU INPUT POWER WIRELESS EQUIPMENT TYPES OUTPUTS
COMMUNICATIONS
TC300B-G No FCU - 4 Pipe/2 Pipe
3 x DO (24 VAC)
2H/1C Heat Pump (air/
24 VAC 2 x DIO
Wi-Fi/BACnet IP, water source)
TC320B-G 3 x UIO
Bluetooth 1H/1C Conventional
RS485 BACnet MS/TP
Modbus RTU
TC300C-G No
5 x DO (100-277 VAC)
100-277 VAC FCU - 4 Pipe/2 Pipe
Wi-Fi/BACnet IP, 3 x UIO
TC320C-G
Bluetooth
ACCESSORY
PART NUMBER DESCRIPTION
TRTC-DECOPLATE-1 Decorative wall plate, TR and TC Series
Note: The accessory is available in separate order.
3
DIMENSIONS
ALL MODELS THERMOSTATS
TC300B/ TC300C/
All Models TC320B TC320C
front view 1.02” 1.24”
(26 mm) (31.5 mm)
3.93” (100 mm)
4.47”
(113.6 mm)
0.76” 0.82”…
