Nelson EZ Pro Jr Installation guide

EZ PRO™Jr. Instructions

Zone Chart

Rev 5-03

EZ Pro™Jr.

Installation and Programming Guide

For EZ ProTM Jr. models:

8304 8374

8306 8376

8309 8379

8312 8382

THANK YOU for purchasing the EZ Pro™Jr. 8300 Series electronic

irrigation controller. The EZ Pro™Jr. 8300 Series is so “EZ”, you’ll

probably be able to install and program this feature-packed controller

without instructions. However, before installing and programming the

controller, we recommend you read these instructions carefully to take

full advantage of all the EZ Pro™Jr. 8300 Series has to offer.

If you have questions, problems or comments on your new EZ Pro™Jr.

8300 Series, please call our Technical Services Department toll-free at

1-888-NELSON8, or by visiting us on our website at LRNelson.com.

Leaders in Turf Irrigation Since 1911

NOTE: In our efforts to continually improve and update our products, features

and specifications in this manual may change without notice.

4
TABLE OF CONTENTS
Features 5
Installation 6-10
Terminal Strip 9
Connecting Master Valve or Pump-Start Relay 9
Connecting Rain/Moisture Sensor 9
Connecting Battery & Starting Controller 10
Programming the EZ Pro™Jr. 11-21
Programming Overview 11
Front Panel Layout 12-13
Set Time of Day 14
Set Today's Date 14
Set Current Day 14
Select Zones and Set Their Run Times 14
Set Start Times 15
Set % Water Budget 15-16
Set % Water Budget by Month 16
Scheduling 16-17
Set Water Days Scheduling Option 17
Set Odd/Even Day Scheduling Option 18
Set Interval Scheduling Option 18
Set Event Day Scheduling Option 19
Program Review 19
Set Master Valve or Pump 20
Set Rain Delay 20
Turning the Controller Off 21
Advanced Features 22-23
Run a Zone Manually 22
Run a Program Cycle Manually 23
Technical Data/Specifications 24-26
Troubleshooting/Service 27
FCC Rules 28

FEATURES

• Nelson exclusive SELECT&ADJUST™programming

• Lithium battery back-up stores programs without AC or Battery power (AA)

• Programmable delay between zones

• Three independent programs

• Three start times per program (9 total starts)

• Stacking start times

• Three scheduling options to suit the needs of plant material or to comply

with watering restrictions (days of the week, 1-30 day interval, true

odd/even)

• Event days programming per program

• Rain Sensor bypass option

• Leap year compatible-automatically includes Feb 29th every four years

• Water budget option reduces or increases watering 0-200 percent

• Advanced water budget to set water budget for each month of the year

• Two test cycles (Manual with ManualAdvance™feature and Cycle)

• Programmable run times from one minute to 1 hour 59 minutes

• Poly-fuse self resetting circuit protection

INSTALLATION INSTRUCTIONS

The EZ Pro™Jr. 8300 Series can be mounted indoors or outdoors. Find a

location near a 120V wiring source (230/240V for 8374, 8376, 8379, and 8382

models). Install the EZ Pro™Jr. near eye level if possible. Use the supplied

template to mark and pre-drill pilot holes in the wall. Insert screws through the

holes in the case and screw each into the corresponding pilot hole in the wall.

Wiring the Transformer

120 VAC in United States, Canada and Mexico; 230 VAC in Europe, and

240 VAC in Australia and South Africa

NOTE: Refer to and follow local codes if different from these instructions.

CAUTION: Disconnect 120V (230/240V for 8374, 8376, 8379, and 8382 models) power

source before wiring transformer. Complete all wiring and installation

before connecting the transformer to power source. This will avoid

accidental shorting which could damage the controller.

Power supply cables and cords used for connections are to be of ordinary

duty or greater. Low voltage output cables should be enclosed in conduit affixed

to the controller with a suitable adapter. Remove the two screws and lift out the

transformer cover to provide access to the internal transformer, bring 120V (or

230/240 for 8374, 8376, 8379, and 8382 models) wires up through 1/2" conduit

hole in the bottom of the case. (For field connection, AC wires must have an

insulation rated at 75° C minimum). Conduit should be secured to the case

(follow local codes).

INSTALLATION INSTRUCTIONS

For models 8304, 8306, 8309, 8312 (see figure 1)

Remove the transformer cover by loosening the two screws. Attach AC wires

to transformer wires using wire nuts. Also, ensure earth ground wire is

attached to green with yellow stripe ground wire. Please check local codes for

the grounding requirements in your area. Bundle wire within cable tie loop and

tighten cable tie to prevent loose wiring from touching secondary circuits. The

transformer is now wired. Replace the transformer cover and the two screws.

DO NOT turn on power yet.

NOTE: Failure to ground unit properly may cause severe damage to the

controller and/or personal property and will void warranty.

Figure 1

INSTALLATION INSTRUCTIONS

For models 8354, 8356, 8359, 8362 (see figure 2)

Remove the transformer cover by loosening the two screws. Route AC wires

to connector provided. Cut and trim wires to install in chassis mount

connector. Tighten the screws. (For Australia an extra clamp has been

provided.) Observe proper polarity of wires as you install them (ie. L1, L2 and

ground). The transformer is now wired. Replace the transformer cover and the

two screws. DO NOT turn on power yet.

NOTE: Failure to ground unit properly may cause severe damage to the

controller and/or personal property and will void warranty.

Figure 2

INSTALLATION INSTRUCTIONS

Terminal Strip

All zone, pump and sensor wire connections made inside the EZ Pro™Jr. utilize

screw type connectors that require a small screwdriver. The terminal strips in

the controller accept 12 AWG (2.1mm) wire or smaller.

Connecting Master Valve or Pump-Start Relay

The EZ Pro™Jr. is equipped with a shared circuit to operate either a pump-

start relay or a master valve. Connect one wire from the pump-start relay to

COM (common) on terminal strip, the other to PMP/MV (pump/master valve)

on the terminal strip. Refer to the pump-start relay manufacturer’s instructions

for specific installation details.

Connecting Rain/Moisture Sensor

The EZ Pro™Jr. is equipped to operate a sensor with normally-closed leads.

To install a sensor, remove the factory-installed jumper wire from the sensor

connector on the terminal strip and insert the sensor wires. Refer to the

sensor manufacturer’s instructions for specific installation details.

(See figure 2)

If a sensor has suspended watering, the sensor indicator segment will

appear on the LCD. The symbol will go off when the sensor has dried out. The

EZ Pro™Jr. will resume operation based on the selected program.

NOTE: Manual operations will ignore the rain sensor

INSTALLATION INSTRUCTIONS

Connecting the batteries and starting the controller

Remove the terminal panel under the LCD of the unit by pushing up on the tab.

Insert two new AA Alkaline (LR6 in Europe) batteries into the battery clips in the

pocket directly above the terminal strip. The AA batteries enable the EZ Pro™Jr.

to be programmed without AC power and maintain the programs and real time

clock in the event of a power outage. If the batteries are not installed, and the

Lithium battery has not been activated, the controller will lose real time and

programs in the event of a power outage. The batteries should be replaced every

five years, or when low battery symbol appears.

CAUTION: Use AA alkaline batteries only. NiCad batteries may leak or

explode causing personal injury or property damage.

Lithium Battery Backup

The EZ Pro™Jr. controllers come with a lithium battery back-up, so you will

not lose program settings or time during a power failure - even if there is no

battery installed. There will be no visual indication that this backup is working,

or when this battery is going dead. Please keep fresh Alkaline AA batteries in

the unit for the main backup battery. To activate the Lithium Battery backup,

remove the tab marked “PULL” located under the AA battery compartment.

Attach the battery/wiring cover, being sure not to damage wires. If wires are

stiff, you may find it helpful to pre-bend them. Turn on the power source.

You’re now ready to start programming!

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