Product Overview

TC500A-N COMMERCIAL THERMOSTAT
31-00398M-01 | Rev. 10-20 4
Thermostat Ordering Part Numbers
Terminal Assignments
24VAC
RC
24VAC power from cooling
transformer
G Fan
Y1
Relay output, Compressor
contactor (stage1)
Y2
Relay output, Compressor
contactor (stage2)
Y3
Relay output, Compressor
contactor (stage3)/Configurable
Output
W1 Relay output, Heat (stage1)
W2 Relay output, Heat (stage2)
W3
Relay output, heat
(stage3)/Configurable Output
Aux
Relay dry contact, Aux-1
Relay dry contact, Aux-2
Table 7. Terminal identification
Terminal Label Connection
Table 8. Thermostat Part Numbers
TC500A-N Thermostat with North
American Wi-Fi
conformance
TC500A-W Thermostat with outside
of North American Wi-Fi
conformance
Table 9. 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.