RainPro HDC-4, Operating Manual, Page: 5 / 23

4
bundled or wired together with all other
common wires from all the valves to the
“Com” terminal of the controller.
4) Wire sizing should be of significant size to
allow a maximum of 5 volts drop between
controller and valves. Use Ohms’ Law to
calculate wire voltage drop.
5) Replace cover.
Note: All in-field wire splices should be made
using a dry type waterproof, gel-filled Hit Products
DBC-Y type connector or equivalent.
CONNECTING POWER SOURCE
1) Leave electrical power unattached until all
valve wires are connected to the
controller.
2) Remove lower panel cover to gain access
to the terminal connectors. Insert the two
wires from the plug-in transformer into the
two terminals marked ‘AC’ “AC”.
3) Replace cover.