OPERATION
Actuator
Connection
Valve
Movement
Type
Cable Model
Molex
TM
Model
3-WIRE
(for SPDT
controller)
Blue & Brown energised
Black de-energized
Pin #2 & #3 energised Pin
#6 de-energised
Closes
Blue & Black energised
Brown de-energized
Pin #2 & #6 energised Pin
#3 de-energised
Opens
2 + COM.
(for SPST
controller)
Blue & Brown energised
Black open
Pin #2 & #3 energised Pin
#3 & #6 open
Closes
Blue & Brown energised
Black closed
Pin #2 & #3 energised Pin
#3 & #6 closed
Opens
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.
~
AC
MOTOR
CW
CAM
Valve
Close
Open
N
L
"VC "HYDRONIC VALVE
SW1
SW2
S.P.D.T.
CONTROLLER
NC
NO
BROWN
BLACK
BLUE
2
6
3
Figure 8 - Actuator wiring for SPDT controller
NOTE:
VC2114 and VC8114 actuators must be used with sepa
rately-powered (hardwired) electronic controllers. Their sustained
current draw is too low for power stealing (parasitic power)
thermostats or series anticipators of electromechanical thermo
stats.
WHEN USED WITH SPST CONTROLLER (Figure 9): On a call for
heat, RLY1 is energized making the NO contacts in SW3, the valve
opens. When the valve reaches the fully open position the cam
operated SW1 closes and SW2 opens. When need for heat is
satisfied,
the thermostat contacts open, RLY1 is de-energized and the valve
motor is driven closed through SW1 and the NC contacts of SW3.
When the valve reaches the fully closed position, the cam operated
SW2 closes and SW1 opens anticipating the next call for heat
cycle.
~
"VC" HYDRONIC VALVE
AC
MOTOR
CW
CAM
RLY1
SW1
SW2
Valve
Close
Open
NC
NO
SW3
BLUE
BROWN
2
N
L
CONTROLLER
6
BLACK
3
S.P.S.T
.
Figure 9 - Actuator wiring for SPST controller
CHECKOUT
1. Raise the set point of the thermostat above room temperature to
initiate a call for heat. Red valve position lever should move
downward to the open position.
2. For auxiliary switch models, observe all control devices. The valve
should open and the auxiliary switch (if present) should close and
make at the end of the opening stroke to activate auxiliary
equipment.
3. Lower the set point of the zone thermostat below room temperature.
4. Observe the control devices. The valve should close and all auxiliary
equipment should stop.
SERVICE
This valve should be serviced by a trained, experienced service
technician.
1. If the valve is leaking, drain system
OR
isolate valve from the
system.
2. Check to see if the cartridge needs to be replaced.
3. If the motor or other internal parts of the actuator is damaged,
replace the entire actuator assembly.
NOTE: Honeywell hydronic valves are designed and tested for silent
operation in properly designed and installed systems. However, water
noises may occur as a result of excessive water velocity. Piping noises
may occur in high temperature (over 212
°
F [100
°
C]) systems with
insufficient water pressure.
Automation and Control Solutions
In Canada:
Environmental Control Products
Honeywell Limited-Limitee
1985 douglas Drive North
35 Dynamic Drive
Golden Valley, MN 55422-3992
Toronto, ON M1V 4Z9
U.S.A.
Canada
Printed in Canada
