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Setting Sunup and Sunset Offset Times from Astronomic Sunup and Sunset Times

Normally, the time switch’s sunup and sunset times match the actual occurrence of sunup and sunset (astronomic sunup and sunset

times). In some cases it is desirable to change the time switch’s sunrise and sunset times so circuits turn on or off either before or

after an actual sunup or sunset. For example, a user can set the lights in a parking lot to turn on 30 minutes before the normal sunset

time by changing the time switch’s sunset time to 30 minutes (a 30 minute offset) before the normal sunset time.

Follow this procedure to adjust sunup and sunset times or press MODE to skip this procedure.

1. Press MODE to advance to the Offset mode selection if this selection is not already active. The SET and SUNUP icons appear

at the top of the display. The default sunup time for circuit #1 is displayed as indicated by the LOAD icon above the circuit #1

button.

2. Press + or - to adjust the time for sunup and press ENTER/NEXT. OFFSET briey appears on the display, and then the offset

time (in minutes) is displayed.

NOTE: Offsets can be set to a maximum of 2 hours (120 minutes) before or after a sunup or sunset time. A minus sign (-)

appears before the digit to indicate minutes before a sunup or sunset time.

3. If needed, press + or - to adjust the offset time value and press ENTER/NEXT to save the value.

4. The updated sunup time is displayed.

5. If desired, press the ON/OFF button to adjust the offset time for the next circuit to program. The LOAD icon for this circuit will

be displayed.

6. Repeat steps 2 through 5 for each circuit.

7. When all circuits are set, press MODE to save settings. The time switch displays SET and SUNSET icons at the top of the

display. The default sunset time for circuit #1 is displayed as indicated by the LOAD icon above the circuit #1 button.

8. Repeat steps 2 through 5 as necessary to adjust sunset times.

9. When all the sunset times are congured, press MODE to save.

Programming Events

Users can congure Astro events, xed timed events, or a combination of Astro and xed timed events.

Perform the applicable instructions below.

• To set Astro events (sunset and sunup) only, perform the procedure; Setting Astronomic On/Off Events

• To set xed timed events only, perform the procedure; Setting Fixed Timed Events

• To set a combination of Astro and xed events, perform both procedures; Setting Astronomic Events and Setting Fixed Events

Intermatic ET2825C User Manual

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