EZ-1 Decoder Connection and Configuration
As illustrated in the diagrams, if stations 1-4 are already configured through two existing stations (1-2), an additional pair of stations would be accessible for Type-G operations. Alternatively, if stations 1-7 are currently wired, you would need to add station 8 as the first available option for secondary control applications.
The system often comes with built-in station 8 pre-configured for Type-H operations. When stations 1-7 have been properly wired and configured, station 8 typically becomes the next accessible option for advanced irrigation scheduling and control.
Adding Supplementary Station Modules
Turn the POWER LOCK to the POWER OFF (unlocked) setting. Insert any supplementary station modules into the designated expansion area.
Verify that all modules are properly seated, then rotate the POWER LOCK to the ON (locked) configuration (quarter turn clockwise).
Reconnect the power source and wait for the display to illuminate. If the display fails to activate, ensure all modules are correctly positioned and fully secured.
To activate a decoder with a 9-volt standard cell, locate the dedicated button on the rear panel of the first section or the front housing to reset the unit.
Remove wire insulation and insert both red and blue wires from the decoder into the designated programming port (direct path). The outlet which was originally green.
Carefully insert the decoder where you intend to integrate it into the field decoder system. This can be accomplished using either the controller interface or through the supplementary programming device.
When the decoder has been properly configured, both indicator lights on the module will illuminate. Press the PRG (Program) button on the controller interface. The display for the EZ-CBA on the PC-COM, along with the EZ-1 decoder, will show a steady green indicator to confirm successful programming completion.
To configure a decoder as a 7-VAV compatible unit, follow these same steps. However, you must press the designated button twice (separate presses).
Connection Reference
- P/MV (Pump/Master Valve)
- Program button and status LED
- Two-wire path terminals
- Decoder programming port
EZ-1 Decoder with P/MV Configuration
To configure a P/MV (Pump/Master Valve) for a decoder system, establish a jumper wire connection from the 2-VAV on the DC-DIA to the P/MV terminal line. Position the 4-station master module as illustrated in the connection diagram. This configuration uses the 4-VAV terminal (brown wire) connected to the P/MV line. Connect the P/MV unit in your system through a simple 2-wire pathway. Utilize type-stripped 1/2" zip wire that features dual terminals to enable proper operation. See the illustration provided for reference.
Wire Specifications
| American Wire Gauge | Distance, single solenoid (ft.) | Distance, 2 solenoids per output |
|---|---|---|
| 18 AWG | 908 | 454 |
| 16 AWG | 1,446 | 723 |
| 14 AWG | 2,292 | 1,146 |
| 12 AWG | 3,650 | 1,825 |
Note:
Distances in the Wire Specifications table are calculated based on 60 Hz for American Standard Wire (solid conductor) at 24V AC operating with a 170°F (77°C) ambient temperature rating.