Okay, the planning's done, you've bought
all the parts, now you're in the yard, shovel in hand, ready
to start.
STEP
1.
Place a stake or flag at every sprinkler location as indicated
on your layout. Use string to show where the pipe will run.
STOP! Make sure you know where all gas
lines, power lines and cable TV lines are before you start
to dig. Be sure to call your utility companies if you need
help.
STEP 2.
Dig trenches following the string. Mark the sprinkler locations
with flags or the stakes. Typical trench depths range from
6 to 12 inches.
To
run pipe under existing walkways you can "drill"
using water pressure. Get a piece of PVC long enough to go
under the walk, glue a slip-female thread adapter to one
end
and attach a hose. On the other end glue a slip-male thread
adapter and connect a Jet Spray Nozzle (available at most
home improvement and home & garden retailers). Dig your trench
up to the walk on both sides. Now turn on
the
water
and work your way through. It may take a while, and it will
get muddy so turn off the water once in a while to let the
water soak in.
To make trenching easier ask your local tool rental supplier
about a "power trencher".
If you are using a Poly Pipe, ask about a pipe pulling
machine, which will bury pipe without digging up your lawn.
Be sure to put enough space between valves on the manifold
so that they can be removed in case they ever need to be
replaced.
STEP 3.
Hook up your water supply. Did you check with your Rain Bird
Dealer to find out which connections are right for our local
codes and conditions?
STEP 4.
Assemble your valve manifold. Connect the back-flow preventer
if required.
PVC and Poly Pipe
PVC is available in a variety of diameters and wall thickness'.
Your system will operate better and be more durable using
a larger diameter (3/4", 1", or 1 1/4"), heavier
gauge (schedule 40) pipe. Poly pipe is mostly used in colder
climates. Poly pipe is more flexible and is less likely to
be damaged by freezing. Rain Bird does not recommend using
poly pipe for the main line connecting pipe.
PVC cement is applied to the inside of the fitting and the
outside of the pipe. Quickly insert pipe all the way, giving
a 1/4 turn to distribute the cement and hold a few seconds.
A primer is available to prepare the pipe and fittings for
gluing. Read the manufacturers instructions before using PVC
cement.
Poly is assembled by sliding a clamp over the pipe, insert
the fitting all the way then bring the clamp into position
and tighten.
STEP 5.
Place lengths of pipe along the string after laying out the
right sprinklers and connectors at each stake.
STEP 6.
Start assembling moving from one sprinkler location to the
next. Don't connect the sprinkler until everything is assembled
so that you can flush the system with water to clear out any
dirt that got in the pipes.
STEP 7.
Manually flush the system. Turn on the water at the "shut-off"
to supply your system. Then operate the valves manually to
flush the system. Open each valve to flush the pipe with water,
then close. Refer to the valve instructions for manual operation.
You should do this with each valve.
STEP 8.
Attach the sprinklers after flushing the system with water.
STEP 9. Wire
the valves to the timer following the instructions that come
with your timer. Be sure to write down which timer "station"
runs which zone and keep these notes near your timer.
Now test each zone, using the timer to control the valves.
Make any adjustments to the distance and directions of the
sprinklers. When everything is working right, bury the pipe.