Honeywell TC300 Commercial Thermostat Instruction Manual
TC300 Commercial Thermostat
CONNECTED DEVICE FOR COMMERCIAL BUILDINGS
MOUNTING & INSTALLATION INSTRUCTIONS
INTRODUCTION
WARNING
Can cause severe injury, death or property
damage.
Disconnect the power supply before beginning
installation to prevent electrical shock and
equipment damage. More than one power supply
may have to be disconnected.
Electrical Shock Hazard.
TC300 Commercial Touchscreen Thermostat is designed
to be wall-mounted indoors. Mount in a clean, dry location
away from windows, air ducts, and other places where
environmental factors may affect temperature and
humidity readings. If you mount the Thermostat on the
interior of an outside wall, thoroughly insulate it so the
outside air behind the sensor does not affect the sensor
reading.
To meet the requirements of the Americans with
Disabilities Act, mount no higher than 48" from the floor
and with a minimum clear floor space of 30" X 48" (760 X
1220 mm).
MERCURY NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do not place your old
control in the trash. Dispose of it properly. Contact
your local waste management authority for
instructions regarding recycling and the proper
disposal of an old control. If you have questions,
contact Honeywell Customer Care Center.
Supported Documents
•
•
•
TC300 Commercial Thermostat Datasheet (31-00645)
TC300 Commercial Thermostat User Guide (31-00644)
TC300 Commercial Thermostat Pocket guide (31-
00648)
Location
Do not install the Thermostat unit where it can be affected
by:
•
•
•
TC300 Deco Plate Pocket guide (31-00657)
TC300 BACnet Integration guide (31-00646)
TC300 Safety Sheet (31-00643)
—
—
—
—
—
drafts or dead spots behind doors and in corners.
hot or cold air from ducts.
radiant heat from sun or appliances.
concealed pipes and chimneys.
unheated (uncooled) areas such as an outside wall
behind the thermostat.
When installing this product
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
ous condition.
2. Check the ratings given in the instructions and
marked on the product to make sure the product is
suitable for your application.
3. Installer must be a trained, experienced service tech-
nician.
4. After installation is complete, check the product
operation.
5. Be sure wiring complies with all applicable codes,
ordinances, and regulations.
IMPORTANT
To avoid electrical interference, which can cause
erratic performances, keep wiring runs as short as
possible and do not run thermostat wires adja-
cent to the line voltage electrical distribution sys-
tems. Use shielded cable. The cable shield must
be grounded only at the controlled equipment
case.
USING ONBOARD TEMPERATURE SENSOR
Install the Thermostat about 4 ft. (1.2m) above the floor in
an area with good air circulation at average temperature.
(See Fig. 1). Confirm mounting height meets Americans
with Disabilities Act requirements.
| General | Details |
|---|---|
| Name | Honeywell TC300 Commercial Thermostat Instruction Manual |
| Make | Honeywell |
| Language | English |
| Filetype | PDF (Download) |
| File size | 1.42 MB |

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Honeywell TC300 Manual: Questions and Answers
What is the maximum power load for the Honeywell TC300 with 14-18 AWG wire?
96VA with all digital outputs on. Instruction Manual, p. 2
How do I ensure the thermostat receives adequate power?
Select wire gauge based on the length of power supply runs. Use 14-18 AWG for maximum 4A and 96VA, 20-22 AWG for maximum 3A and 72VA, or 24-26 AWG for maximum 2A and 48VA. Instruction Manual, p. 2
What VAC power supply is required?
24VAC from a UL Listed Class-2 transformer, not included in the kit. Instruction Manual, p. 2



















