Master Valve An automatic or manual control valve located between the irrigation water source and the sprinkler system valves and/or backflow preventer.
Normally Closed
A switch or control device that remains closed (off) unless energized or activated by a control source.
Normally Open
A switch or control device that remains open (on) unless energized or activated by a control source.
Odd/Even Schedule
An Odd or Even watering day schedule based on either all
Outdoor Timer Model
A timer model with suitable for outdoor installation.
Plug-in Module
A small module that plugs into the ECXTRA that pro- vides for the connection two additional watering zones.
Power Supply
The
Pump/Master Valve Control
The timer automatically turns on the Pump/Master Valve circuit at the beginning of each watering cycle.
Pump Delay Time
The Pump/Master Valve control circuit is energized before a program watering cycle begins, and is adjust- able from 1 to 60 seconds. This feature enables the pump to pressurize or master valve to open completely
40prior to the start of the watering cycle.
Pump Start Relay
Since the timer is not designed to connect directly to the pump, a 24 VAC pump start relay switch must be installed between the timer and pump start circuit.
Rain Delay
This feature enables all watering operations to be delayed from 1 to 7 days. For example, rain is forecast for the next two days, and instead of turning the timer off (and possibly forgetting to turn it back on), a rain delay of 3 days can be set. At the end of 3 days, the timer auto- matically resumes watering operation as scheduled.
Rain Sensor
A rain sensor is a remote sensing device that signals the timer to postpone automatic watering operation when rain has been detected. The timer resumes watering operation as scheduled when signaled by the rain sensor.
Rain Sensor Control Switch
The rain sensor control switch is provided to override rain sensor operation as needed.
Rain Sensor Configuration Switch
Rain sensors are available in normally open (NO) and normally closed (NC) configurations. The type used with the ECXTRA is selected with the corresponding switch setting.
Scheduling
Planning how long to water (zone run time), when to water (program start time) and which days to water (watering days).
