Terminal Identification - Honeywell TC500A Quick Start Manual

TC500A COMMERCIAL THERMOSTAT

Terminal Identification

Fig. 1. Terminals
Table 9. Terminal Identification
Terminal Label
24VAC power from heating
R
transformer
24VAC common (Neutral). For 2
24VAC
transformer systems, use
C
common wire from cooling
transformer
1 Universal input/output
UIO1
COM Common
2 Universal input/output
UIO2
COM Common
1 Universal input
UI1
COM Common
2 Universal input
UI2
COM Common
Sylk bus, master, power output
Sylk
(S-BUS)
Sylk bus, master, power output
BACnet Communications (coming
+
soon)
RS485
BACnet Communications (coming
_
soon)
Jumper between R and RC for
R-RC
single transformer system
31-00398M-02 | Rev. 04-21
Connection
4
Table 9. Terminal Identification
Terminal Label
24VAC power from cooling
RC
transformer
G Fan
Relay output, Compressor
Y1
contactor (stage1)
Relay output, Compressor
Y2
contactor (stage2)
24VAC
Relay output, Compressor
Y3 contactor (stage3)/Configurable
Output
W1 Relay output, Heat (stage1)
W2 Relay output, Heat (stage2)
Relay output, heat
W3
(stage3)/Configurable Output
Relay dry contact, Aux-1
Aux
Relay dry contact, Aux-2
Thermostat Variants
Table 10. Thermostat Part Numbers
TC500A-N
TC500A-W
(coming soon)
Accessories
Table 11. Accessories Part Numbers
Decoplate-N
Decoplate-W
Connection
Thermostat with North
American Wi-Fi
conformance
Thermostat with outside
of North American Wi-Fi
conformance
TC500 deco plate for NA
junction boxes
TC500 deco plate for
Globe junction boxes