Wiring Guide
67
Back of
Control
iSeries-R
B
A
24 Volt
Transformer
N
H
Power
Input
C R
24 VAC
POWER INPUT
SENSOR
COMMON
BOILER
SUPPLY
OUTDOOR
POWER
GREEN
SENSOR
ERROR
RED
BACK OF iVALVE-R MIXING VALVE ACTUATOR
iValve, 2-Way Injection, Single Zone
Outdoor
Sensor
Supply
Sensor
Boiler
Sensor
T
End
Switch
Outdoor
Sensor
System
Supply
Sensor
Boiler
Return
Sensor
SENSOR COMMON
CR
24 VAC
POWER INPUT
BOILER
POWER
GREEN
SENSOR
ERROR
RED
SUPPLY
OUTDOOR
iSeries Mixing Valve
iValve-R
System
Supply
Sensor
Boiler
Return
Sensor
(optional)
24 V (ac)
Transformer
(Constant Power)
iValve-S
or
Back of
Control
End
Switch
SENSOR COMMON
CR
24 VAC
POWER INPUT
BOILER
POWER
GREEN
SENSOR
ERROR
RED
SUPPLY
SETBACK
24 V (ac)
Transformer
(Constant Power)
or
Setback
Input
ONE ZONE
SWITCHING RELAY
SR 501-4
FUSE
6 AMP
POWER
ZONE 1
LED
INDICATORS
FUSE
6 AMP
NH3 4 4 566
N/O N/ON/C N/CCOM COM
120 VAC
INPUT
TT
COM
R
W
24
VAC
THERMOSTAT
FOR ADDITIONAL WIRING DIAGRAMS, PLEASE SEE www.taco-hvac.com/wiringwizard