Figure 3.
Valve - exploded view
Figure 4.
Installation guidelines
8
9
10
The manual lever on the actuator is used as a position indicator and as
a manual opener for putting the valve in full open position to allow initial
system flushing.
Do not use boiler additives, solder flux, and wetted materials. These are
petroleum based or contain mineral oil, hydrocarbons, or ethylene
glycol acetate. Compounds which can be used, with minimum 50%
water dilution are diethylene glycol, ethylene glycol, and propylene
glycol (antifreeze solution).
Plumbing
In mixing applications the valve is installed with inlet to A, bypass to B
and outlet through AB.
For 2-way or 3-way control, mount the valve directly in the tube or pipe.
Do not grip actuator while making and tightening up plumbing
connections. Hold valve body in your hand or attach adjustable spanner
across hexagonal or flat faces of valve body. If assembling valve train on
a bench, take care not to deform body with vice. Excess jaw force can
deform body.
Installing Replacement Actuator
Note:
Installation of a new actuator does not require draining the
system, provided the valve body remain in the pipeline.
1. Check replacement part number and voltage ratings for match with
old device.
2. Disconnect power supply before servicing to avoid electrical shock or
equipment damage.
3. Disconnect lead wires to actuator. Where appropriate, label wires for
rewiring.
4. Remove the screw attaching actuator to valve.
5. Install new actuator by matching the positions of the square shaft and
actuator stem.
6. Match locating pins to mating holes.
7. Screw actuator to valve body hand tight.
8. Reconnect lead wires.
9. Restore power and check-out operation.
Manual Operation
The valve can be manipulated to any position manually as required. To
manually operate the valve, simultaneously press the manual button
and rotate the lever to the desired position (see
). The manual
open position may be used for filling, venting and draining the system,
or for opening the valve in case of power failure. The valve and actuator
will return to the automatic position when power is restored.
Figure 5.
Manual operation
Do NOT rotate the
lever before pressing
the button.
Wiring
One controller is required to operate each valve. A common controller
may be used with isolation relays between each actuator. Actuator
interaction can result otherwise.
shows single unit wiring
connections. Port “A” open and closed denote valve open and closed
positions respectively.
Figure 6.
Wiring diagram
3-Wire Floating
Analog
