Brochure

F-27855-10200
9. Zone Valves
TAC Erie™ Zone Valves
150
Two-Position Spring Return PopTop Two-Way and Three-Way VT/VS Assemblies Flow Patterns
The VT/VS series are two-position spring return valves. When powered, the actuator moves to the desired position,
tensing the spring return system. When power is removed the acutator returns to the normal position.
The VT/VS series two-position spring return valves can be purchased with an optional built-in auxiliary SPDT end
switch for interfacing or signaling; for example, zone pump burner control.
Figure 5 Two-Way Valve with Normally Closed
Actuator.
Figure 6 Two-Way Valve with Normally Open
Actuator.
Figure 7 Three-Way Valve in Mixing Configuration
Normally Closed to the Coil.
Figure 8 Three-Way Valve in Mixing Configuration
Normally Open to the Coil.
Figure 9 Three-Way Valve in Diverting
Configuration Normally Closed to the Coil.
Figure 10 Three-Way Valve in Diverting
Configuration Normally Open to the Coil.
POWER
OFF
AB
Coil
POWER
OFF
A
B
Coil
POWER
OFF
A
B
Coil
POWER
OFF
A
B
Coil
POWER
OFF
A
B
Coil
A
B
POWER
OFF
Coil
Zone Valves
© Copyright 2007 TAC. All Rights Reserved F-27411-3
Erie™ PopTop, 2/3-Way VT/VS Two Position
SR Assembly Flow Pattterns
9. Zone Valves