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Electronic 2-Circuit

Astronomic 7-Day Time Switch

Installation and Setup Instructions

With 100-Hour Backup

Federal Communications Commission (FCC) Notice for ET2000 Series Time Switches

Description

This document explains the setup and configuration of the Intermatic ET2825 2-Circuit 
Electronic Astronomic 365/7-Day Time Switch. The ET2825 time switch automatically 
switches loads according to the entered 

weekly

 schedule. The time switch can support up 

to 48 fixed ON and 48 fixed OFF events (96 total) and up to 4 Astro events. Each fixed 
event can be applied to any combination of circuits and days.
The time switch features an LCD and panel-mounted control buttons to set, review, and 
monitor the time switch functions, including setting date and time, schedule creation, 
enabling or disabling Daylight Saving Time (DST) and configuring DST switchover dates.
Follow these instructions to complete the installation and programming of the ET2825 time 
switch.

This device complies with part 15 of the FCC rules. Operation of this device is subject to the following two conditions: (1) This device 
may not cause harmful interference, and (2) This device must accept any interference, including interference that may cause 
undesired operation. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to 
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the 
equipment is operated in a commercial environment. This equipment generates, uses and radiates radio frequency energy and, if 
not installed and used in accordance with instructions, may cause harmful interference to radio communications. Operation of this 
equipment in a residential area is likely to cause harmful interference that requires the user to correct at his or her own expense.

MODELS ET2825C, ET2825CR, ET2825CP

Shown in indoor/outdoor 

lockable metal enclosure 

NOTICE

•  Do NOT touch circuit board components, contact can create a static discharge, which can damage these electronic components.

•  Disconnect power at the circuit breaker(s) or disconnect switch(es) before installing or servicing.
•  More than one circuit breaker or disconnect switch may be required to de-energize the equipment before servicing.
•  For plastic enclosures, bonding between conduit connections is not automatic and must be provided as part of the installation.
•  Installation and/or wiring must be in accordance with National and Local Electrical Code requirements.
•  Use #14-#8 AWG wires, rated at least 105°C - COPPER conductors ONLY.
•  If the power disconnect point is out of sight, lock it in the OFF position and tag it to prevent unexpected application power.
•  Make sure there is no wire insulation under the terminal plate on the time switch connector. Firmly tighten terminal screws.
•  For outdoor locations or wet locations (rain-tight), conduit hubs that comply with requirements of the UL514B (standard for fitting conduit and 

outlet boxes) are to be used.

•  Do not remove insulator that is covering terminals.
•  Do NOT exceed maximum current carrying capacity.
•  KEEP DOOR CLOSED AT ALL TIMES when not servicing.

Risk of Fire or Electric Shock

     WARNING

Summary of Contents for ET2825C

Page 1: ...n a commercial environment This equipment generates uses and radiates radio frequency energy and if not installed and used in accordance with instructions may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference that requires the user to correct at his or her own expense MODELS ET2825C ET2825CR ET2825CP Shown i...

Page 2: ... the rear If a 3 4 inch knockout is needed remove the 1 2 inch knockout first then the 3 4 knockout 6 Place the enclosure in the desired location providing space for the enclosure door to swing open fully 7 Securely mount enclosure using provided mounting holes 8 Use appropriately rated fittings for the installation 9 Snap the mechanism back into the enclosure 10 Strip 1 2 inch off the supply and ...

Page 3: ...AC DPST LOAD 1 COM2 NO 2 COM1 NO 1 AC IN TIMER POWER CIRCUIT 2 CIRCUIT 1 L2 L1 OUTPUT CONFIGURATION SIM OUTPUT CONFIGURATION PUL BELL RINGING L1 L2 N CIRCUIT 1 CIRCUIT 2 TIMER POWER AC IN NO 1 COM1 NO 2 COM2 LOAD 1 COM CLOSE OPEN OUTPUT CONFIGURATION PUL L1 L2 N CIRCUIT 1 CIRCUIT 2 TIMER POWER AC IN NO 1 COM1 NO 2 COM2 TIMER CONFIGURATION FOR CONTACTOR CONTROL ...

Page 4: ...nd read or write an event schedule from a USB memory stick NOTE If the time switch is left inactive for five minutes in a programming mode it will return to the AUTO mode screen AUTO icon turned on If no scheduled events are programmed the time switch will return to MANUAL mode If the date has not yet been entered the time switch will go to the Enter Date Mode Setting Date Follow this procedure be...

Page 5: ...ete 3 Press or to scroll to the desired DST rules for your area NOTE The DST rules are US2007 US rules MX1986 Mexico rules and CUSTOM user defined start end dates If you select Then US2007 or MX1986 Go to step 8 NOTE To view the start and end dates for a DST rule press ENTER NEXT to scroll through the dates and then press MODE Custom Press ENTER NEXT The screen displays a flashing MAR and 2ND Go t...

Page 6: ...ill be available for every state N S E W C NE NW SE SW North South East West Center Northeast Northwest Southeast Southwest Example If time switch is located in Chicago then the geographical location within the state of Illinois would be NE NOTE In most cases the section choice provides an accurate location for your time switch If a location requires greater accuracy adjust the latitude and longit...

Page 7: ...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 ico...

Page 8: ...ash Go to step 4 4 Press to eliminate this event or press to keep this event for the selected day 5 Press DAY to move to the next day of the week repeat step 4 6 When all the days are set press ENTER NEXT to save 7 The display changes to SET ASTRO ON OFF EVENTS SUNUP the OFF icon 8 If an event is not set the display will show 9 Press DAY The screen displays SUNUP and the days of the week If the de...

Page 9: ...iminate this event or press to keep this event for the selected day 7 Press DAY to move to the next day of the week repeat step 6 8 When all the days are set press ENTER NEXT to save 9 The Event Number increments and the SET FIXED ON OFF EVENTS and OFF icons are displayed Press ENTER NEXT if this fixed off event is not needed go to step 17 10 If an event is not set the time display will show 11 Pr...

Page 10: ...rn to step 2 All the events are set Press MODE to save and exit The procedure is complete Example July 4th would have a start date of Jul 4 and an end date of Jul 5 At 12 00 AM on July 4th the circuits will be turned to the OFF state At 12 00 AM on July 5th the circuits will reconcile and will be turned to their correct state of operation Setting Operating Mode The time switch can be set to one of...

Page 11: ...perating mode selection AUTO ENERGY SAVER MANUAL Reading Time Switch Program Data from a USB Memory Stick The time switch has the capability to read program data event schedules holidays output configuration DST on off setting DST rule setting and geographical location from a USB memory stick Follow these steps to transfer all programming from a USB memory stick to the time switch 1 Press MODE to ...

Page 12: ... does not apply to a damage to units caused by accident dropping or abuse in handling acts of God or any negligent use b units which have been subject to unauthorized repair opened taken apart or otherwise modified c units not used in accordance with instructions d damages exceeding the cost of the product e sealed lamps and or lamp bulbs LED s and batteries f the finish on any portion of the prod...

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