Johnson Controls TEC2627-2 - Page 8

TEC26x7-2 Series BACnet® MS/TP Networked Thermostats with Two Outputs Installation Instructions8
Figure 15: Wiring the TEC2647-2 Thermostat for Proportional 0 to 10 VDC Control
(Heating/Cooling Hydronic Valve Control with Changeover)
F
I
G
:
t
e
c
2
6
4
7
_
h
t
n
g
_
c
l
n
g
_
h
d
r
n
c
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c
h
n
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v
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Proportional
Heating/Cooling
Valve
Optional Water
Supply Sensor
Room Temperature
Control Thermostat
Supply Water
Temperature Sensor
0 to 10
VDC
UI3 COS
24 V~ Com
24 V~ Hot
AO1
Figure 16: Wiring the TEC2627-2 Thermostat for On/Off Control
Two-Pipe Applications
Four-Pipe Applications
T
E
C
2
6
2
7
o
n
o
f
f
24 V~
Com
24 V~
Hot
or
24 V~
Com
24 V~
Hot
Cooling
Valve
or
Heating
Valve
or
Figure 17: Wiring the TEC2627-2 Thermostat for Floating Control
Two-Pipe Applications
Four-Pipe Applications
T
E
C
2
6
2
7
f
l
o
a
t
i
n
g
24 V~
Com
24 V~
Hot
BO1
Cooling
Valve
Heating
Valve
BO2 BO3
BO4
24 V~
Com
24 V~
Hot
BO1
Heating/Cooling
Valve
BO2