TEC2045-4 Wireless Thermostat Controller with Single Proportional Output and One-Speed Fan Control
Installation Instructions
4
Figure 5: TEC2045-4 Thermostat Controller
Terminals
Fan
Three-Pole
Left Top Connector Two-Pole
Right Top Connector
Six-Pole Bottom Connector
Blank
24 V~
Hot
24 V~
Com
BO5
Aux
BO5
Aux
Scom
AO1
UI3
BI1
BI2
3
4
5
6
7
10
11
12
14
15
16
F
IG
:T
E
C
2
0
4
5
_
tr
m
n
ls
Table 2: TEC2045-4 Thermostat Controller
Terminals
Terminal
Number
Terminal
Label
Function
3
Fan
Fan On
4
24 V~ Hot
24 VAC from Transformer
5
24 V~ Com
24 VAC from Transformer
(Common)
6
BO5 Aux
Auxiliary Binary Output
7
BO5 Aux
Auxiliary Binary Output
10
AO1
Open Cool
11
Blank
Close Cool
12
BI1
Configurable Binary Input 1
14
Scom
Sensor Common
15
BI2
Configurable Binary Input 2
16
UI3
Configurable Universal Input 3
Figure 6: TEC2045-4 Thermostat Controller with Separate Power Source for Auxiliary Contact
FI
G
:TE
C204
5_d
if
f
Separate 24 VAC
Power Source for Auxiliary Output
(24 VAC Maximum)
BO5
Aux
BO5
Aux
24 VAC
Thermostat Power
Fan
24 V~
Com
0 to 10 VDC
24 VAC
Com
Analog Output
and Valve
24 V~
Hot
AO1
Fan
Power and Fan
Aux Contact
(Isolated Common)
• Reheat
• Lighting
• On/Off Actuation
• Exhaust Fan
Aux
Load
BI2
UI3
BI1
Scom
- OR -
Remote Inputs
SS (Supply Sensor)
COS (Change Over Sensor)
Voltage-Free
Contact
• COC/NH
Normally Heat
Closed Contact
= Cold Water
• COC/NC
Normally Cool
Closed Contact
= Hot Water
Voltage-Free
Contact
• Door
• Remote
Override
• Filter Alarm
• Service Alarm
Voltage-Free
Contact
• Remote NSB
• Motion
• Window
