10 31-00400M-01 | Rev10-20
1 - ABOUT TC500A THERMOSTAT
• A LED indicator to show the operational status of the thermostat when the display
goes to sleep mode.
• Real-Time Clock time keeping accuracy with 72 hour retention during power loss.
Intended audience and assumed knowledge
This document provides information about installing and commissioning a TC500A
Thermostat. It also shows how to operate the user interface.
It is assumed that the user is trained and familiar with HVAC concepts.
IMPORTANT: Always install equipment in accordance with the National Electric
Code and in a manner acceptable to the local authority having jurisdiction (AHJ). No
guidelines, instructions, installation practices, or other information presented in this
guide may be interpreted to supersede or modify the local codes and practices of the
AHJ.
Reference documents
• Commercial Thermostat Datasheet (31-00398M)
• Commercial Thermostat Mounting instructions (31-00399M)
• Commercial Thermostat Quick start guide (31-00401M)
Abbreviation and Nomenclature
Conventions
The TC500A Commercial Connected Thermostat uses a 4 inch, 480x480 pixel LCD
screen for easy navigation and setup. User can select from various options available
on the screen by lightly tapping the option on the screen or scrolling through the list.
The conventions for hand gestures used to navigate through the pages on the
TC500A Thermostat display are:
• Tap: Quickly touch and release to select a control or item; equivalent to a mouse-
click.
Abbreviation Definition
AHU Air Handling Unit
RTU Roof Top Unit
VAC Volts AC (Alternating Current)
VDC/ DC Volts DC (Direct Current)
OTW Over-The-Wire
ETA Serial Communication protocol
BMS Building Management System
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