Liquid Controls LCR Install - Manual (Page 15)

15
Wiring the LCR
Installing a Valve with 110VAC Solenoids
This step applies only to configurations that will be using
a two-stage valve with 110VAC solenoids.
Using a two-stage valve with solenoids operating on
110VAC requires the use of two relays. These relays
must operate at +12VDC and the contact rating must be
greater than the current draw for the device being
switched. The relays must be SPST (single pole, single
throw) and be normally open.
For installation of the valve the following parts will be
need:
•
Cable, 2 conductor, stranded 20 GA
• Flexible liquid-tight conduit, ½" diameter and ½" NPT
conduit connectors or cable glands
• Teflon tape or pipe sealant
• 2 SPST, normally open relays
Installation Procedure
1. Install the valve between the meter and the hose reel.
If there is a manual ball valve installed in the system,
make sure it is after the two-stage valve and before
the hose reel. If an air check valve is present in the
system, leave it in place.
2. Install the relays in an appropriate location based on
the requirements of the environment. Follow all
applicable codes.
3. Install cable glands or conduit connectors on each
solenoid valve and on the LCR ports. Use Teflon
based pipe sealant or Teflon tape on the threads.
4. Cut the conduit to the length required between the
port on the register and the relays, and between the
relays and the corresponding valve solenoids.
5. Cut the cable 6" longer than the lengths of conduit or
the cable run.
6. Using wire strippers, strip-off the insulation (approx.
1¼") on each end of the cable and off the tip of the
conductors (approx. ¼").
6. Run the cables through the conduit or cable gland
between the solenoids and relays and then connect
the conduit to the solenoid valve and the relays.
7. Wire the solenoids to the relays as shown in the figure
to the right.
8. Run the cables through the conduit or cable gland
between the relays and register and then connect
the conduit to the relays and the register.
9. Wire the relays to the register as shown in Figure 9.
10. Wire the 110VAC source to the solenoids according
the solenoid manufacturer’s instructions.