Place them near the timer so you will not have a long wire run. Install a shutoff valve just prior to the control valves. The valves are simply put together with threaded parts; you do not have to glue them. From the valves, run Schedule 80 PVC pipe, starting with a threaded piece down into the trench for the pipe runs to the sprinkler head. These can be installed at any height, but you must first install a separate code-approved backflow preventer prior to the in-line valves.
You can place these valves in a box that is partially buried. Dig a fairly large hole to give yourself room to work and then install the box and the valves. They also assemble without glue and use Schedule 80 PVC parts. From the valves, run pipe through trenches to the sprinkler heads.
Use low-voltage insulated cable approved for burial usually AWG or to connect the timer to the control valves. You will need multi-strand wire with enough wires for each valve plus one more to connect the valves to the timer. Replacing a sprinkler system controller can be tricky, but these four steps can help you easily replace an outdated controller with a more modern Wi-Fi enabled controller.
Before you purchase a new controller, determine if you will need an indoor or outdoor controller model. Indoor controllers typically come with a dedicated power cord and can plug directly into a common wall outlet, while outdoor controllers are hard wired.
You will also need to know how many stations exist for the system. Most residential systems use four to 12 stations, so be sure to purchase a controller that can accommodate and current and future needs.
Before removing the previous system controller, make sure to turn off the power to avoid injury or fire damage. Any wires connected to the controller can now be safely detached.
Next, remove the mounting screws to release the controller from the hanger. Once you have the new controller in place, run the valve wires up through the port at the bottom of the controller box.
Next, connect the valves and sensor wire to the power supply. Run the wires through the bottom of the cabinet and secure them in place with a locking nut.
We include a list of tools necessary to complete the project and steps in how to do it. If you already have a controller that is giving you problems and find that you need to replace it with a new one, let me reassure you that it is very easy to replace a controller and most any homeowner or irrigation repair person can handle this task.
First, if possible, it makes your job easier if you can write down all of your existing programming from the old controller. Specifically, you want to write down the specific days scheduled for watering, the start times and how long each zone is scheduled to be watered. You will need to use this information to program the new controller.
If the old controller is completely dead and you can not get this information, no worries, as you can program the new controller to water a few days a week and the rotor zones for 20 minutes and the spray head zones for 5 to 8 minutes each time they come on. A good start time is or am so that all the watering is completed before you need to start using water in the house in the morning.
Then you can adjust these settings later as you find that the yard is getting watered too much or not enough. Make sure to unplug your transformer from the wall, if you have an indoor system, or turn off the power to the timer at the breaker box, if you have an outdoor system.
Use that volt-meter to verify the power is not reaching the controller. The next step is to label each of the control valve hot wires on the old timer. Label them according to the zone they are connected to, zone 1, zone 2, zone 3, etc. Also label the common wire connected to the common connection and the pump start wire if you are using a pump.
Now you are ready to disconnect the wires. If possible, buy the same model and brand as the controller that was already in the system. Now is a good time to upgrade to a better more feature rich timer. Take the old controller out and mount the new one on the wall. Reconnect your wires as they are labeled and reprogram your controller with your watering schedule.
Turn the controller on and make sure all zones are working properly. I told you, replacing a controller is very easy as long as you label the wires before removing them from the old timer.
Sprinkler system controllers come in interior or exterior models. Indoor sprinkler system timers plug easily into an electric outlet. Exterior sprinkler system controllers are housed in sealed weather-resistant cabinets. The exterior controller has a transformer inside the cabinet, and must be hard wired into the power supply. Indoor irrigation controllers can also be installed outside. Weather-resistant cabinets are available separately, to convert indoor controllers to outdoor use.
Many lawn sprinkler system timers can be adapted to add extra stations, in case of expansion or amendments to the lawn sprinkler system. Remote control allows the user to operate indoor or outdoor sprinkler system controllers from a distance. The remote control comes in handy if the user wants to do work or maintenance on the sprinkler system, or operate the controller from a remote location. It makes spring check ups and maintenance much easier.
You can turn zones on and off without walking back and forth to the timer. Click here to shop remotes. Some irrigation controllers have built-in rain sensors.
If not, adding a rain sensor or other weather device to the controller is a practical option for most home and property owners. Weather devices also sense outdoor temperature to guard against freezing. A solar power converter is a handy add-on feature available in some sprinkler system controllers. Instead of mounting the sprinkler timer to the wall, the user has the option of mounting the controller on a stand-alone pedestal. Some irrigation controller pedestals include a separate wiring board.
Some sprinkler system controllers feature seasonal adjustment options. Other weather devices include wind sensors, which shut down the system in case of high winds, or temperature-sensitive features to regulate the function of the lawn sprinkler system. Click here to shop sensors.
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