Orbit Model 27999 Irrigation Controller Instruction Manual

Name: Orbit Model 27999 Irrigation Controller Instruction Manual
Brand: Manualverse
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Orbit Model 27999 Irrigation Controller Instruction Manual

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📖 Manual 📋 Specifications 📝 Summary 💬 FAQs

Orbit Model 27999 Irrigation Controller

User Manual

16 pages

Quick Start Guide

13 pages

Orbit Model 27999 Instructions

Here we offer the Orbit Model 27999 Irrigation Controller manual completely free and in English. We have cataloged this manual in the Irrigation Controllers section on Manualverse, and it has been rated by 1 users with an average rating of 5. If you have any specific questions about Orbit Model 27999 Irrigation Controller, we suggest checking the Frequently Asked Questions (FAQs) section of this manual.

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Orbit Model 27999 Irrigation Controller Specifications

Feature	Specification
Model Series Covered	27999, 57894, 57896, 57899, 57900, 27894, 27896, 27892, 91894, 91896, 91892, 91899
Operating Temperature Range	32°F to 158°F (0°C to 70°C)
Number of Independent Programs	3 (A, B, C)
Maximum Start Times per Program	4
Watering Duration Range per Station	1 to 240 minutes
Watering Frequency Options	Days of the week, Intervals (every "X" days), Odd or Even days
Battery Type for Memory Retention	1 x CR2032 Lithium (included, annual replacement recommended)
Maximum Loading per Station/Pump	250mA
Maximum Total Timer Loading	500mA
Input Power (U.S. Retail Timers)	110V AC electrical outlet
Power Feed Wire (Permanent Outdoor Wiring)	14 AWG minimum, temperature rating 155°F (68°C) or higher
Valve Wire Gauge (Under 700'/210m)	20 AWG (Orbit® sprinkler wire or plastic jacketed thermostat wire)
Valve Wire Gauge (Over 700'/210m)	16 AWG
Certifications & Listings	UL-50 standard, ETL® listed, CSA® and CE® approved (international models), Canadian ICES-003 Class B compliant
Disconnection Type	1Y Normal Pollution situation
Warranty	6 years from date of purchase

Orbit 27999 Irrigation Controller Details

The Orbit Model 27999 Irrigation Controller is designed for optimal convenience and flexibility, featuring Orbit’s exclusive Easy-Set Logic™. This innovative system simplifies programming and setup, integrating advanced timer technology with versatile watering options. Users can effortlessly manage a fully automatic, semi-automatic, or completely manual watering program tailored to their specific landscape needs, ensuring efficient irrigation for all zones.

The controller offers the distinct advantage of three independent programs (A, B, C). Each program functions autonomously, allowing for diverse watering schedules across different areas, such as drip lines, newly seeded lawns, or rotary sprinkler zones. This multi-program capability enables users to group stations with similar water requirements, thereby maximizing irrigation efficiency. Furthermore, start-time stacking intelligently delays subsequent programs if an earlier one is still running, preventing simultaneous operation.

A practical Rain Delay function is integrated, enabling users to pause their programmed watering schedules for 24, 48, or 72 hours. This feature is particularly useful during periods of natural rainfall or unexpected weather conditions. During the delay, the controller’s display conveniently alternates between the current time and the remaining hours of the delay, keeping the user informed. The delay can be easily cancelled at any time by pressing the CLEAR button.

To adapt to changing seasonal needs, the Orbit Model 27999 includes Water Budgeting. This feature allows for the adjustment of overall watering durations for all stations within a chosen program by a percentage, ranging from 10% to 200% in 10% increments. The default setting is 100%. This functionality ensures that water usage can be easily scaled up or down without reprogramming individual station run times, optimizing water conservation efforts.

For immediate watering requirements, the controller offers versatile Manual Watering options. Users can initiate watering for all stations consecutively based on their programmed durations, or select a specific program (A, B, or C). Additionally, individual stations can be chosen and assigned a desired watering duration from 1 to 240 minutes, all without altering the established automatic schedule. This provides flexibility for quick tests or supplemental watering.

The Orbit 27999 supports a master valve or pump start relay, activating it whenever any station is active (requires a separate pump start relay). It also features dedicated "sensor" terminal ports (yellow) for connecting a rain sensor, complete with an override switch for maintenance. The intuitive user interface includes clearly labeled buttons (ENTER, MANUAL, CLEAR, PROGRAM, ARROW, RAIN DELAY, +/–) and a simple dial with positions for setting the clock, date, start times, run times, watering frequency, and budgeting.

Frequently Asked Questions (FAQs)

Can't find the answer you need? Here are some frequently asked questions about the Orbit Model 27999 Irrigation Controller, and we answer them below.

How many independent watering programs can I set on the Orbit Model 27999?

You can set up to three independent watering programs, labeled A, B, and C. This allows for flexible scheduling tailored to different zones or watering needs.

What happens to my programming if there is a power outage?

The Orbit Model 27999 requires one CR2032 lithium battery (included) to retain your program in memory during AC power loss. If the battery is weak or missing, your programming may be erased, requiring reprogramming.

Can I manually water a specific zone without changing my automatic schedule?

Yes, you can. Turn the dial to AUTO, press the MANUAL button, then use the arrow buttons to select a specific station. Use the +/– buttons to set the desired duration (1 to 240 minutes). The station will begin watering without disturbing your preset program.

How do I temporarily pause watering if it rains?

You can use the Rain Delay feature. Turn the dial to AUTO, then press the RAIN DELAY button. This will automatically delay watering for 24 hours. You can press the +/– buttons to extend the delay to 48 or 72 hours. Automatic watering resumes after the delay.

Is it possible to adjust the watering duration for all stations at once to account for seasonal changes?

Yes, the Water Budgeting feature allows you to adjust the overall watering duration for all stations in a program. You can increase or decrease the duration from 10% to 200% in 10% increments to match seasonal watering needs without re-programming each station individually.

What should I do if one or more valves are not turning on?

Possible causes include a faulty solenoid connection, a damaged or severed wire, the flow control stem being screwed down (shutting off the valve), or incorrect programming. Check connections, wires, and ensure your program settings are correct.

Can I connect a rain sensor to this controller?

Yes, the Orbit Model 27999 is equipped with dedicated "sensor" wiring terminal ports (yellow) for connecting a rain sensor. Remember to refer to your rain sensor manual for specific wiring instructions and ensure the sensor override switch is in the "on" position.

How many start times can I set for each program?

You can set up to four start times for each independent program (A, B, or C). All stations that have a programmed run time will run in sequence at these designated start times.

What is 'Start-Time Stacking'?

Start-Time Stacking is a feature where if a new program's start time is set before a previous program has completed, the new program will be "stacked" or delayed. It will automatically begin only after the previous program has finished its cycle.

What type of electrical connection is required for outdoor installation?

For outdoor locations, if a covered Ground Fault Interrupter (GFI) outlet is available, insert the power cord into a 110V outlet. If no outlet is available, the timer requires permanent wiring, which should be done by a licensed electrical contractor following local codes, using a 1/2" nipple and junction box with 14 AWG minimum power feed wire.

What is the warranty period for the Orbit Model 27999?

Orbit® Irrigation Products, Inc. warrants its products to be free from defects in materials and workmanship for a period of six years from the date of purchase. Proof of purchase is required for warranty claims.

What tools are needed for installing the Orbit Model 27999 Irrigation Controller?

The primary tools required for installation are a Phillips screwdriver and wire strippers. Expanding anchors and No. 8 screws are included for mounting.