Install Instructions

VC2, VC4, VC60, VC8
95C-10920—03 4
Fig. 3. Flexible Conduit Attachment
WIRING
NOTE: Each 3-wire (SPDT) actuator must have individual
SPDT controllers. Use series 40 or 80 for single con-
troller to control multiple valves.
Figures 4, 5, 6, & 7 wiring connections. Port “A” open and
closed denote valve open and closed positions respectively.
On auxiliary switch models, terminal 4 (grey wire) contact
makes at the end of the Port A opening stroke. On Molex™
connector models, valve & auxiliary switch voltage must be
the same to meet approval requirement. For mixed line
voltage and 24 Vac (Safety Extra Low Voltage) application
together, the cable version is recommended.
CAUTION
Disconnect power supply before connecting
wiring to prevent electrical shock and equipment
damage.
Fig. 4. Wire Configuration for Molex™ Models for SPDT
Controller (Series 20 & 60)
Fig. 5. Wiring Color Code for Cable Models for SPDT
Controller (Series 20 & 60)
Fig. 6. Wire Configuration for Molex™ Models for SPDT
Controller (Series 40 & 80)
Fig. 7. Wiring Color Code for Cable Models for SPDT
Controller (Series 40 & 80)
OPERATION
WHEN USED WITH SPDT (3-WIRE) CONTROLLER
(Figure 8): On a call for heat, the NO thermostat contacts
close, the valve opens. When the valve reaches the fully open
position, the cam actuated SW1 closes and SW2 opens.
When the need for heat is satisfied the NC thermostat
contacts close, energizing the valve through SW1 to close the
valve. When the valve reaches the fully close position, the
cam actuated SW2 closes and SW1 opens anticipating the
next call for heat cycle.
In a power failure the valve will stay at whatever position it
was in when the power was interrupted. When power is
restored, the valve will respond to the controller demand.
Actuator
Type
Connection
Valve
MovementCable model Molex™ model
3-WIRE
(for SPDT
controller)
Blue & Brown energised
Black de-energised
Pin#2 & 3 energised
Pin# 6 de-energised
Closes
Blue & black energised
Brown de-energised
Pin#2 & 6 energised
Pin# 3 de-energised
Opens
2 + COM.
(for SPST
controller)
Blue & Brown energised
Brown & Black open
Pin#2 & 3 energised
Pin# 3 & 6 open
Closes
Blue & Brown energised
Brown& Black closed
Pin#2 & 3 energised
Pin# 3 & 6 closed
Opens