Honeywell TC300 Commercial Thermostat Instruction Manual

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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  

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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:  

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TC300 Deco Plate Pocket guide (31-00657)  

TC300 BACnet Integration guide (31-00646)  

TC300 Safety Sheet (31-00643)  

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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.  

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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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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• Honeywell

Honeywell TC300 Commercial Thermostat Instruction Manual Overview

Summary of Contents

• Page 1: TC300 Commercial Thermostat Connected device for commercial buildings Mounting & installation instructions Warning: Can cause severe injury, death or property damage. Disconnect the power supply before beginning installation to prevent electrical shock and equipment damage. The TC300 Commercial Touchscreen Thermostat is designed to be wall-mounted indoors. To meet the requirements of the Americans with Disabilities Act, mount no higher than 48 from the floor. If this control is replacing a control that contains mercury in a sealed tube, do not place your old control in the trash. Do not install the Thermostat unit where it can be affected by drafts, hot or cold air from ducts, or radiant heat from sun or appliances. Installer must be a trained, experienced service technician. To avoid electrical interference, keep wiring runs as short as possible and do not run thermostat wires adjacent to line voltage electrical distribution systems. Install the Thermostat about 4 ft. (1.2m) above the floor in an area with good air circulation.
• Page 2: TC300 commercial thermostat Using external temp./hum. sensors The thermostat uses 24VAC power from a UL Listed Class-2 24VAC transformer. Half-wave devices and full-wave devices must not use the same AC transformer. You must maintain wiring polarity to avoid equipment damage. Long power supply wiring runs require selecting the wire gauge appropriately. Min. load is 4VA with all DOs OFF and no Sylk sensor. Max. load varies based on wire gauge used for R, C terminal. Dispose of the product in an appropriate recycling center. Every relay output is N.O. contacts with a maximum switch rating of 24VAC @1A. Use a UL Class 2 rated transformer or a lesser capable transformer.
• Page 3: TC300 commercial thermostat Position and level the wallplate along the wall and mark the drilling location using a pencil. Ensure that thermostat power connections only use R and C terminals. COM should only be used for analog inputs/outputs. Mount the wallplate vertically on the wall. It supports 14-26AWG wires. If you are using a TC300 Deco plate for thermostat mounting, refer to the Deco plate pocket guide. Loosen the security screw using a screwdriver by turning it counterclockwise. Remove the wallplate and drill two pilot holes on the wall, on the marks. Gently tap anchors into the pilot holes until flush with the wall. Pull the wires through the wiring opening of the wallplate and position the wallplate over the mounting holes. Insert the screws into the holes and tighten. TC300 can support vertical mounting of various junction boxes.
• Page 4: TC300 commercial thermostat Pull the wires through the wiring opening of the wall plate and position the wallplate along the junction box to align the mounting holes. Insert the screws into the holes and tighten them. Table 2. Terminal identification BACnet/Modbus communications Accessories ordering part numbers Configurable relay output 24VAC power from Class 2 transformer Do not wire the thermostat to line voltage. Fig. 7. Thermostat terminal assignments Universal input/output
• Page 5: TC300 commercial thermostat Wiring the wallplate Mounting the display unit All wiring must comply with local electrical codes and ordinances. Power must not be connected while wiring. Connect wires to the terminals. Loosen the terminal screw, and insert the solid wire into the wiring terminal hole directly. Tight the terminal screw using the Phillips screwdriver. Carefully pivot the display onto the wall plate to ensure proper engagement of pins with terminal blocks. Check for loose or frayed wire that may cause a short.
• Page 6: TC300 commercial thermostat Gently tighten the security screw using a screwdriver by turning it in the clockwise direction. Dismounting the display unit involves unscrewing the security screw and detaching the display unit from the bottom and top sides.
• Page 7: TC300 commercial thermostat Dimensions Thermostat dimensions: 1.02” (26mm), 3.93” (100mm), 4.47” (113.6mm), 0.76” (19.4mm) Decoplate dimensions: 5.51” (140mm), 0.27” (7mm), 5.51” (140mm) By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys’ fees, arising out of, or resulting from, any modification to the literature by you. Honeywell Building Technologies © 2023 Honeywell International Inc.