93
24 VAC
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE 5
FUSE (5 AMP MAX)
TT
TT
TT
TT
TT
ZVC 405
12 34
12 34
12 34
12 34
12 34
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE 5
2 WIRE ZONE VALVE
(NO END SWITCH)
JUMPER
3 & 4
TACO
3 WIRE ZONE VALVE
1
2
3
MOTOR
END
SWITCH
THERMOSTAT
THERMOSTAT
THERMOSTAT
4 WIRE ZONE VALVE
(POWER OPEN, SELF CLOSING)
T STAT 1
VALVE 1
T STAT 2
VALVE 2
T STAT 3
VALVE 3
T STAT 4
VALVE 4
T STAT 5
VALVE 5
POWER
FIVE ZONE ZONE VALVE CONTROL
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
END
SWITCH
N/O COM N/C
T
T
TO CIRCULATOR
OR BOILER
AQUASTAT RELAY
DRY
CONTACTS
POWER IN
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
Operation/External Diagnostics:
When any thermostat
calls for heat, the appropriate zone valve is energized and
the yellow light goes on. When the zone valve is fully
open, the red light goes on and energizes the end switch
relay. The green light should always be on, indicating that
power is connected.
The Taco Connection:
Combine the reliability of the Taco
Zone Valves, Priority Zoning Circulators, Thermostats, and
the “00” family of circulators with the advanced features of
the Taco Zone Controls to achieve total system integra-
tion. No matter the application, Taco now provides the
products to maximize system performance while simplify-
ing both installation and service.
Warning:
Wiring connections must be made in accordance with all applicable
electrical codes. Use copper wire only. Failure to follow this instruction can result
in personal injury or death and/or property damage. 10-18 gauge wire recom-
mended for 120 VAC connections with 9 in.lbs. max torque, 12-22 gauge wire for
thermostat connections with 9 in.lbs. max torque, and 12-22 gauge wire for 24
VAC source with 5 in.lbs. max torque.
Wiring
Diagram
Specifications:
PRODUCT
NUMBER
TRANSFORMER
MAX OUTPUT
DIMENSIONS OF ENCLOSURE
NUMBER
OF ZONES
VOLTAGE
AT 24 VAC
WIDTH
HEIGHT
DEPTH
ZVC403
3 Zo
n
e
120 VAC I
n
put
40 VA
10
1
⁄
4
"
6
3
⁄
4
"
2
3
⁄
4
"
ZVC405
5 Zo
n
e
120 VAC I
n
put
80 VA
11
3
⁄
4
"
7
1
⁄
2
"
3
"
All Zo
n
e Valve Co
n
trols are relay type DPDT a
n
d have a si
n
gle phase
m
otor rati
n
g per zo
n
e of
1
⁄
6
hp (5A) @ 120 VAC.
Instruction Sheet
ZVC403 & ZVC405 Zone Valve Control
Features:
External Indicator
Lights
Simplified Wiring
Works with 2, 3, or 4-
Wire Zone Valves
Compact Design
Fuse Protected
100% Factory Tested
Isolated End Switch
Extra Set of Dry Contacts
Contractor Friendly PC
Board Layout
Universal Thermostat
Compatibility
UL Approved
Sturdy Screw Connections
Extended 3 Year Warranty
Made in the USA
Do it Once. Do it Right.
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 2000
TACO, Inc.
END
SWITCH
N/O COM N/C
T
T
BOILER
HOT
NEUTRAL
120 VAC
Installation of
Optional System
Circulator
