Orbit 51241 User Manual

Layout Guide

Easy, step-by-step,

underground sprinkler

system layout guide

FREE SPRINKLER SYSTEM DESIGN

See page 5 for details

Planning & Design

Water Meter

Compression

Tee

3/4” Water Service Line for House

Flow

Main Sprinkler

Shut-Off

Pre-Assembled

Swing-Joint

Spring-Loaded Pop-Up with Adjustable Nozzle

WHY INSTALL AN UNDERGROUND IRRIGATION SYSTEM?

• Conserve Water & Money – Reduce over-watering and water when evaporation levels are low.

Time

•

Incr

ease Property Value

more attractive. Eliminate Yard Clutter – Eliminate the ugly tangle and yellow marks left by unsightly

• garden hose.

CHECK LOCAL CODES

– Enjoy a beautiful yard and spend more time doing the things you lik

– Greener

, thicker lawns, shrubs and trees, make your property

Water District

Call your local water district for requirements concerning permits, plumbers, backflow prevention and pipe requirements.

Sprinkler System Layout & Installation Guide

Planning & Design

Main Sprinkler

Line 1"

Anti-Siphon

Device

Sprinkler

Timer

Sprinkler

Wire

Header

Line 1"

Lateral Sprinkler

Line 3/4"

Valve

Manifold

Common Questions To Ask Your Water District:

Is a permit required?

•

• Is a licensed plumber required for connecting to the main water supply? ▫Yes ▫ No What type of backflow prevention device is required?

•

▫ Double Check ▫ Pressure Vacuum Breaker ▫ Automatic Anti-siphon Valve ▫ Dual Check Valve

• Climate: Will pipes freeze in my area?

reezing

▫ F

• How deep should I bury my pipes? Pipe Depth ___________

• What type of pipe is required (or recommended) for my area? Pipe type: ____________

▫ Non Freezing

▫Y

▫ No

Utility Companies

Before digging, contact your local gas, power, telephone, and cable companies to mark underground cables and pipelines on your proper

▫ Gas ▫ Power ▫ Other _____________ ▫ Phone ▫TV & Internet cables

ty, such as:

Sprinkler System Layout & Installation Guide

Planning & Design

200 0

180 20

160 40

40 60

120 80

100

psi

rbit

psi

Orb

200 0

180 20

160 40

40 60

120 80

100

psi

rbit

psi

Orb

DETERMINE SIZE OF SERVICE LINE

Length of string 2" 2-3/4" 3-1/4" 3-1/2" 4-1/4"

Copper pipe size 1/2" 1"

PVC or galvanized pipe size 1/2" 3/4" 1"

3/4"

WATE R PRESSURE (PSI)

35 LB. 40 LB. 45 LB. 50 LB. 55 LB. 60 LB. 65 LB. 70 LB. 75 LB.

MAIN

LINE

SIZE

1/2"

3.5 5.0 6.0 6.5 7.0 7.5 8.0 9.0 9.5

3/4"

7.5 9.0 10.0 12.0 13.0 14.0 15.0 16.0 17.5

10.0 11.5 13.5

15.0

16.0 17.5 18.5 20.0 21.0

MEASURE WATER FLOW

You need to determine the available water flow for your sprinkler system so you'll know

ow many sprinkler heads can run at one time. Water flow is measured in gallons per minute

h or GPM.

Measure Your Water Pressure

• Attach an Orbit®pressure gauge (part # 53020, 91130) to an unregulated outside faucet*. Unregulated means a line without

a pressure regulator.

• Open the faucet and record the reading on the gauge. No water should be running

during the test.

PSI _________

Measure the Main Water Service Line

• Wrap a piece of string around your main

ater service line then measure the length

w of the string.

• Use the table to convert the string length to pipe size (diameter).

Note: The main water service line is the pipe that runs from the water meter to the house. If you're connecting to a line other than the main line, measure the line that you will be connecting to.

Pipe Size _________

GPM Capacity ___________

* If an unregulated faucet is unavailable, call the local water district for an estimated PSI.

ystem Capacity

Use the main line pipe size and pressure (PSI) taken to determine the gallons per minute (GPM) capacity of your system.

Important: If your water pressure exceeds 80 PSI, use a pressure reducer

. Excessive pressure may damage system.

Sprinkler System Layout & Installation Guide

Planning & Design

RIVEWAY

SHRUBS

PATIO

TREE

REE

RASS

GRASS

LOWERS

ATER

METER

70'

73'

20'

14'

13'

18'

40'

10'

48'

10'

12'

STOP

MEASURE & DRAW PROPERTY

Measure your property and create a top down view on graph paper (supplied in this guide).

ake the drawing to scale. For example, each one-inch square represents 10 feet on the graph

M paper, or each small square = 1 foot.

Draw Property to Scale.

Include:

Buildings, sidewalks, patios, driveways and trees

Label:

Grass, flower beds and water meter location

LET ORBIT®DESIGN YOUR SPRINKLER SYSTEM

Instead of continuing on to the next section,

www.orbitonline.com and use the free

go to

sprinkler system design program.

TIME SAVING

TIP!

What y

SELECT HEADS

elect sprinkler heads you would lik

ou receive:

• Detailed color-coded drawings with:

▪ Sprinkler placement and spray patterns ▪ Layouts of individual sprinkler zones/stations ▪ Valve and sprinkler pipe placement.

• Step by step assembly instructions.

• Detailed parts list for PVC or Poly-Pipe systems.

• Quick turn around – Completed in about 2 days.

e to use for eac

h area and mak

e a note of eac

h type on

your drawing.

ype for Each Section

ea Spr

inklers

s, shrubs, and ground cover

our Products) to determine the best sprinkler for your yard.

Select Head

Sprinklers are generally divided into three categories:

•

Large Area Sprinklers

Areas larger than 25' x 25'

• Medium Area Sprinklers Areas smaller than 25' x 25'

Small

• Areas with flower

Note: Refer to page 22 (Selecting Y

Sprinkler System Layout & Installation Guide

Planning & Design

DRIVEWAY

PATIO

TREE

Large

Voyager II

Spring-Loaded

Pop-Up

Medium

Small

Spring-Loaded Pop-Up

Medium

Select Heads For E

ach Area

Our example uses:

Voyager II

•

n the back yard

• Spring-Loaded Pop-Up (with adjustable nozzle) in the front and side yard

• Mushroom bubblers in the front flower areas

Large Area Heads

For large open areas such as backyards and play areas. Space heads 15' to 45' apart (depending on sprinkler type).

Gear Drive – Voyager II®and Saturn III

•

- Easy to adjust roduces a smooth quiet rotating spray

- P

- Closed case design resists clogging from grit, sand and heavy grasses

• Impact (Satellite®and 1⁄2" Brass Impact)

- Simple and reliable flow-through design that utilizes an efficient impact mechanism

Voyager II®– Spaced 20' to 40' Saturn III®– Spaced 15' to 30'

ea Heads

Medium

Satellite®– Spaced 25' to 45'

Commonly used in front and side yards.

Spring-L

•

oaded Pop-Up with adjustable pattern

- Easy to adjust pattern 25˚ - 360˚

• Spring-Loaded Pop-Up with fixed pattern

Medium Area Heads

Pop-up heads & Flush heads

Spacing: 10 to 15 feet

- Available in Full, 1/2, 1/4 and strip pattern nozzle

Small

Area Heads

Commonly used for flooding flower beds and ground cover or to spot water trees and shrubs.

Small Area Heads

Stream & Bubbler heads

Spacing: 3 to 5 feet

Mushroom Bubbler II

•

- Adjustable flow

Note: Orbit®DripMaster®is a water saving alternative to small area heads. Go to www.orbitonline.com for more information.

™

Sprinkler System Layout & Installation Guide

Planning & Design

Sidewalk

PLAN HEAD PLACEMENT

Head to Head Coverage

Proper sprinkler placement allows even watering and reduces dry patches.

Proper placement requires:

• Head to head coverage: Each sprinkler should spray to the head beside and across it.

• Equal spacing between heads: Permits uniform water distribution.

Placement Example: Good

• Good Overlap

• Head to head coverage

Placement Example:

There is not enough overlap. The center is not getting water.

• Not enough overlap

• No coverage in center

Bad

Evenly space strip heads on narrow sections.

row Str

Nar

On narrow strips of grass use strip pattern spray heads and space them evenly apart. These heads may be used for narrow strips up to 4 feet wide.

ips

Place Heads in Corners

• Begin by placing a sprinkler in each corner on your drawing.

• Use a compass to draw the spray pattern.

Note: Use chart 2 on page 20 to obtain spray distance.

Sprinkler System Layout & Installation Guide

Planning & Design

Large

Add Heads and Adjust Spacing

• Add sprinklers along the sides or center to increase coverage.

CREATING WATERING ZONES OR STATIONS

A watering zone or station consists of a group of sprinklers attached to one valve. The number of heads per zone will be determined in this section.

Purpose of Zones

Zones are designed to:

• Maintain adequate water flow for optimal spray coverage (Avoid dry patches)

• Separate areas based on watering requirements

- Shade vs. Full Sun Areas

- Lawn vs. Shrubs

Important:

• Do not mix sprinkler types in the same zone (e.g. Gear Drive, Impacts, Pop-Ups and Bubblers)

• Do not exceed the maximum sprinkler heads recommended per zone

• Use the recommended pipe size in this guide. Smaller diameter pipe will decrease the water flow.

Group Heads of Same Type in the Same Area

Starting with large area heads, use the following example as a guide.

• Identify all large area heads on your drawing.

Divide Large Area Heads into Zones

Lar

ea heads circled

e ar

TEP 1:

Use the following information (collected earlier) to determine zone capacity:

• Main Line Size W

•

• Large area head selected

Use Orbit’s to determine the maximum heads per zone for your sprinkler system.

Maximum Heads P

ressure (PSI)

ater P

Quick Reference (Chart 1, Page 20)

er Zone

Sprinkler System Layout & Installation Guide

Planning & Design

WATER PRESSURE (PSI)

SCH.

PVC

Gear Drive

30 PSI 40 PSI 50 PSI 60 PSI

2223

UICK REFERENCE – MAXIMUM HEADS PER ZONE ESTIMATES

MAIN

LINE SIZE

oyager II

Saturn III

Example – We have determined that our home has a “Main Line” size of 3/4” with a “Static Water Pressure” of 60 psi. Based on this information, and using the Quick Reference, we see that we cannot use more than three Voyager II

sprinklers in

the same zone.

STEP 2: Identifying Sprinklers in a Zone

Begin grouping large area heads, ensure you do not exceed your “Maximum Heads per zone number.”

Example – Since we determined (in our example above) that 3 Voyager II®heads is the maximum zone capacity, we grouped all large area heads into 2 zones.

Step 3:

Medium and Small Area Head Zones

Repeat steps 1 & 2 to determine and identify zones for Medium Areas Heads. Repeat again for Small Area Heads.

Step 4: Number Each Zone

• Assign a number to each zone.

Sprinkler System Layout & Installation Guide

+ 19 hidden pages

Orbit 51241 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual