Honeywell TC500A Mounting Instructions

TC500A-N/TC500A-W COMMERCIAL THERMOSTAT
31-00399M-02 | Rev.03-21
4
Accessories ordering part numbers
Terminal identification
Fig. 6. Thermostat terminal assignments
WARNING
Do NOT wire the thermostat to line voltage.
IMPORTANT
Remove R to RC jumper only for 2 transformer sys-
tems
Table 1. Accessories Part Numbers
Decoplate-N TC500 deco plate for NA
junction boxes
Decoplate-W TC500 deco plate for
Global junction boxes
Table 2. Terminal identification
Terminal Label Connection
24VAC
R
24VAC power from heating Class
2 transformer
C
24VAC common (Neutral). For 2
transformer systems, use
common wire from the cooling
transformer
UIO1
1 Universal input/output
COM Common
UIO2
2 Universal input/output
COM Common
UI1
1 Universal input
COM Common
UI2
2 Universal input
COM Common
Sylk
Sylk bus, master, power output
Sylk bus, master, power output
RS485
+
BACnet Communications
(coming soon)
_
BACnet Communications
(coming soon)
R-RC
Jumper between R and RC for
single transformer system,
remove the jumper in two
transformer system.
24VAC
RC
24VAC power from cooling Class
2 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 2. Terminal identification (Continued)
Terminal Label Connection

Honeywell TC500A Specifications

General

Brand	Honeywell
Model	TC500A
Category	Thermostat
Language	English