WARNING: Wiring connections
must be made in accordance
with all applicable electrical
codes.
CAUTION: To prevent electri-
cal shock, disconnect electric
power to system at main fuse
or circuit breaker box until
installation is complete.
When a service switch is
installed, more than one dis-
connect switch may be
required to deenergize this
device for servicing.
D
O IT
O
NCE
. D
O IT
R
IGHT
.
™
TACO, INC.
, 1160 Cranston Street, Cranston, RI 02920
Telephone: (401) 942-8000
FAX: (401) 942-2360.
TACO (Canada), Ltd.
, 6180 Ordan Drive, Mississauga, Ontario L5T 2B3.
Telephone: 905/564-9422.
FAX: 905/564-9436.
Visit our web site at:
http://www.taco-hvac.com
Printed in USA
Copyright 2006
TACO, Inc.
Electronic Ball Valve (EBV) Zone Valve Wiring Diagrams
LED
Capacitor
(Motor)
End Switch
c
w/y
Simplified Internal
Schematic:
Thermostats
Transformer
To “T” Terminals
on Boiler Control
Transformer Relay
T
T
Up to 12 Valves per
40va Transformer
L1 (Hot)
L2
24 v
End Switch
End Switch
End Switch
Rh/Rc
w/y
Rh/Rc
w/y
Rh/Rc
w/y
w/y
c
w/y
c
w/y
c
L1 (Hot)
L2
Thermostat
To “T” Terminals
Motor
See Chart
See Chart
Red
Red
End Switch
Motor Wire Color
Honeywell = Yellow
Erie = Black
Sparco = Orange/Yellow
Honeywell, Erie and Sparco Wire Leads
Wiring a Taco EBV Zone Valve to Replace a
Honeywell, Erie or Sparco Valve:
Honeywell and Erie Terminal Block
L1 (Hot)
L2
Thermostat
To “T” Terminals
Motor
End Switch
TH
TR
TR
TH
ES
ES
L1 (Hot)
L2
Thermostat
To “T” Terminals on Boiler
Control Transformer Relay
Taco EBV Valve
c
End Switch
w/y
Wiring a Taco EBV Zone Valve to Replace a
Flair or Taco 3-Wire Valve:
L1 (Hot)
L2
Thermostat
To “T” Terminals on Boiler
Control Transformer Relay
Taco EBV Valve
Taco 570 Series
L1 (Hot)
L2
Thermostat
To “T” Terminals
Motor
End Switch
1
2
3
Flair
L1 (Hot)
L2
Thermostat
To “T” Terminals
Motor
End Switch
1
2
3
4
5
c
End Switch
w/y
Wiring a Taco EBV Zone Valve to Replace a White Rodgers Valve:
L1 (Hot)
L2
To “T” Terminals on Boiler
Control Transformer Relay
Taco EBV Valve
4
6
5
L1 (Hot)
L2
To “T” Terminals
Motor
End Switch
6
4
White-Rodgers (1311 or 1321)
4
5
6
Thermostat
5
2
3
1
c
End Switch
Thermostat
w/y
Typical EBV Zone Valve Wiring:
