3. To re-assemble operator to valve body: Position
operator such that the “D” shaped valve stem
aligns properly with the “D” shaped operator drive
cavity (Note: The “D” shaped stem design allows
for correct insertion every time). Next, slide valve
stem into operator cavity and rotate until the oper-
ator slips over the valve’s locking posts (see Figure
C), once the operator is flush with valve body, turn
operator clockwise and lock into position.
4. Wire valve in accordance with system require-
ments, see wiring diagrams.
5. The plug-in quick connects can be disconnected
from the valve operator for ease of wiring. Insert the
corresponding wire into the quick connects (see
wiring diagrams) and tighten by turning the screw.
6. On a 24v system do not jumper power/motor (24
VAC) connection terminals, even temporarily.
This may cause damage to the thermostat’s heat
anticipator.
Mode of Operation, Start-Up:
1. Upon initial field installation the capacitor
requires a full charge, approximately 30 seconds
before the valve starts to turn. Do not disconnect
power to the actuator for at least 1 minute after
valve turns.
2. When the capacitor is charging the green LED
light will FLASH.
3. Once the capacitor is charged the green LED will
stop flashing but remain ON, at this point the
valve’s operator will rotate the ball valve until it
finds its “home” (the valves position when the
thermostat is calling). The “home” position, either
open or closed, is dependent on the style of valve
purchased (either normally opened or normally
closed).
NOTE: As the valve finds its “home” it may need
to travel almost 180°, depending on the initial ball
position. If it rotates past a 90° point it will close
the end switch (T T terminals) to verify connec-
tion. This may make it seem as if the device (i.e.
boiler) connected to the end switch terminals has
short cycled while the valve finds its “home”. This
will
only
occur once on initial start-up.
4. Once the valve finds its “home” the green LED will
remain ON as long as the thermostat is calling.
5. Once the thermostat is satisfied the green LED will
turn OFF and the Prostar Capacitor will discharge
some of its stored energy to rotate the valve 90°
into its normal position. For example: If the actu-
ator is an NC (normally closed) version, the oper-
ator would open the valve when the thermostat
calls. Once the thermostat is satisfied the operator
would then rotate the valve 90° to its normally
closed position.
Mode of Operation:
1. When the thermostat calls, the green LED will start
to FLASH for a short period of time as the Prostar
Capacitor completely refills its charge.
2. The green LED will then turn ON and the operator
will rotate the valve 90° into position.
3. The green LED will stay ON as long as the ther-
mostat is calling.
4. Once the thermostat is satisfied, the green LED
will turn OFF and the valve will rotate 90° to its
normal position.
Figure C: Operator Removal
Step 1
Rotate actuator counter
clockwise approximately 30
degrees
Step 2
Move actuator upward
3
⁄
4
” to disengage
Locking
Post
VALVE SIZE
Cv (Kv)/Ft.
of PIPE EQUIV.*
CLOSE-OFF PSI (kPa)
1
⁄
2
”
4.9 (4.3) / 9.5
0-125 psi (0-862 kPa)
3
⁄
4
”
10.3 (8.9) / 8.4
0-125 psi (0-862 kPa)
1”
8.9 (7.7) / 47.4
0-125 psi (0-862 kPa)
Flow Coefficients and Maximum Close-Off Pressure:
* At 4' per second (max.
recommended residential
flow rate).
WARNING: Do not use zone valves on indirect water heaters without a tempering device.
