Honeywell TC500A Quick Start Guide

TC500A COMMERCIAL THERMOSTAT
5 31-00398M-02 | Rev. 04-21
Terminal Assignments
NOTE: *Marked sensors are supported in the future.
Table 12. Terminal Assignments
Type Terminal Label
Terminal Assignments
(Default & Optional Assignments)
DEFAULT INPUTS OUTPUTS
Digital
Outputs
DO1 G Supply Fan High Speed Fan
DO2 W1 Heat Stage 1
DO3 W2 Heat Stage 2
DO4 W3 / Aux Heat Stage 3 Reversing Valve OB,
Low Speed Fan,
Occupancy,
Simple Dehum, and
Humidification.
DO5 Y1 Cool Stage 1
DO6 Y2 Cool Stage 2
DO7 Y3 / Aux Cool Stage 3 Economizer (Enable),
Low Speed Fan,
Occupancy,
Simple Dehum, and
Humidification.
DO8
(Dry Contact,
2 terminals)
Aux Economizer (Enable),
Occupancy,
Simple Dehum,
Low Speed Fan, and
Humidification.
Universal
Inputs
UI1
(2 terminals)
UI1 NA Occupancy Sensor,
Dirty Filter,
Proof of Airflow,
Shutdown Sensor,
Mixed Air Sensor,
Outdoor Air Sensor,
Discharge Air Sensor,
CO2 Sensor,
Proof of Waterflow,
Space Temp Sensor,
*Filter Pressure sensor,
*Compressor Current
Sensor,
*Fan Current Sensor,
*Compressor Discharge,
*Temperature sensor
UI2
(2 terminals)
UI2 NA
Universal
Inputs/
Outputs
UIO1
(2 terminals)
UIO1 NA Multi-Speed Fan (UIO1)
Outdoor Air Damper
UIO2
(2 terminals)
UIO2 NA Modulating Heat (UIO2)
Outdoor Air Damper
Power
R R 24v Power
C C Common
RC RC 24v Power / Cooling
Sylk Bus
1
S-Bus Sylk connection
2

Honeywell TC500A Specifications

General

Brand	Honeywell
Model	TC500A
Category	Thermostat
Language	English