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Section 20 - Landscaping

20-5.03.B Controllers

Controllers shall conform to Section 50-43.20, “Automatic Irrigation Controllers”, of these

Specifications and shall be installed in accordance with Standard Drawing L-17.

Controllers shall be the type and model specified in the Plans and Special Provisions.

All wiring to and from the controller shall be through color-coded plugs and sockets.

All controller locations are essentially diagrammatic and shall be specifically located by the

owner, or his representative.

Remote control valves shall be connected to the controller as shown on the Plans, unless

otherwise directed by the Agency.

A complete maintenance and operations manual for each type of controller installed shall be

submitted to the Agency.

The controller housing enclosure shall house the irrigation controller and moisture sensor

control panel (if specified) and shall be installed according to the Standard Drawings.

20-5.03.C Control Wire, Electrical Conduit and Pull Boxes

Control wire shall conform to Section 50-43.33, “Irrigation Control Wires”, of these

Specifications. Pull boxes shall conform to Section 50-43.34, “Pull Boxes”, of these

Where control wires are installed in the same trench or opening as irrigation pipe, such

control wires shall be placed at the same depth or below the pipe.

Sharp bends or kinks in the control wires will not be permitted. Control wires shall be

unreeled in place alongside or in the trench and shall be carefully placed along the bottom of

the trench and installed in conduit when under pavement. Under no condition shall the cable be

unreeled and pulled into the trench from one end.

Not less than one foot (1’) of cable slack shall be left on each side of all splices at all points

where cable is connected to field equipment. The slack cable shall be placed in the trench in a

series of “S” curves.

Conductors shall be run continuous without splices from controller enclosure to the valve

boxes. Splices shall be made only in pull boxes or valve boxes. Splices shall be clamped and

sealed with waterproof connectors. When splices are necessary, the wire color shall not

change along the wire run. Conductors from controllers to valves shall be wrapped together

with electrical tape at ten-foot (10') intervals. An eighteen-inch (18”) wire loop shall be provided

Pullboxes shall be installed at the following locations:

1. At all control wire splices, except splices made in valve boxes.

2. At intervals not to exceed two hundred fifty feet (250’) along any low voltage, neutral

and control wire runs. Valve boxes installed along a control wire run shall not be

considered as pull boxes in determining the spacing.

3. Within five feet (5’) of irrigation controllers or within five feet (5’) of cabinets housing

one (1) or more controllers.

4. At ends of electrical conduits.

5. At other locations shown on the Plans.

When approved by the Agency, the Contractor may install additional pull boxes to facilitate

the work. Additional pull boxes installed for the Contractor’s convenience will be at the

Contractor’s expense.

The tops of all pull boxes shall be flush with the surrounding finished grade.

Field tests shall be performed by the Contractor to demonstrate that electrical components

of the irrigation systems function as specified and the system is operational.

A field test shall be satisfactorily completed prior to the start of planting, the plant

establishment period, and Final Acceptance, unless otherwise authorized by the Agency. Field