Introduction
This manual provides detailed instructions for the installation, setup, operation, and maintenance of your Intermatic ET2705C Electronic Timer. This device is designed for precise control of electrical loads with its 7/365-day operation mode and single channel output. Please read this manual thoroughly before installation and use to ensure safe and efficient operation.
Important Safety Instructions
WARNING: Risk of Fire or Electric Shock
- Disconnect power at the circuit breaker(s) or disconnect switch(es) before installing or servicing this unit.
- More than one circuit breaker or disconnect switch may be required to de-energize the equipment before servicing. Ensure all power sources are off.
- Installation and/or wiring must be in accordance with national and local electrical code requirements.
- Use COPPER conductors ONLY.
- Do NOT remove the internal insulator.
For wiring, lift and remove the screw, then swing the plastic insulator covering the terminal aside. Replace the screw and plastic insulator covering the terminal before powering on.
Figure 1: Front panel of the Intermatic ET2705C Electronic Timer. This image displays the digital display, control buttons (MODE, DAY, ENTER/NEXT, ON/OFF, CLEAR MEM, CLEAR ENTRY, +, -), and important safety warnings in English, French, and Spanish regarding electrical shock and fire hazards, as well as wiring instructions.
Setup and Installation
1. Mounting
- The Intermatic ET2705C timer is designed for surface mounting.
- Ensure the mounting location is suitable for a metal enclosure and provides adequate ventilation.
- Securely fasten the timer to a flat, stable surface using appropriate hardware.
2. Wiring
- Before beginning any wiring, ensure all power to the circuit is disconnected at the main breaker or disconnect switch. Verify with a voltage tester.
- Open the timer enclosure. Locate the terminal block.
- To access the wiring terminals, lift and remove the screw, then swing the plastic insulator covering the terminal block aside as indicated on the unit.
- Connect the appropriate copper conductors to the terminals as per the wiring diagram provided inside the unit and local electrical codes. This unit supports 120 to 277Vac voltage.
- Once wiring is complete, replace the plastic insulator covering the terminal block and secure it with the screw.
- Close the timer enclosure.
3. Initial Power-Up
- Restore power to the circuit. The timer display should illuminate.
- Allow the internal capacitor to charge for a few minutes. The timer has a 100-hour backup time in case of power loss.
Operating Instructions
Control Buttons Overview:
- MODE: Cycles through different programming modes (e.g., time setting, program setting).
- DAY: Selects the day of the week during time setting or program scheduling.
- ENTER/NEXT: Confirms selections and moves to the next setting.
- ON/OFF: Manual override for immediate ON/OFF control.
- CLEAR MEM: Clears all programmed settings.
- CLEAR ENTRY: Clears the current entry during programming.
- +: Increases values (e.g., hour, minute, program number).
- -: Decreases values (e.g., hour, minute, program number).
1. Setting Current Time and Date
- Press the MODE button until the time setting mode is displayed.
- Use the + or - buttons to adjust the hour, then press ENTER/NEXT.
- Repeat for minutes and AM/PM (if applicable).
- Use the DAY button to select the current day of the week, then press ENTER/NEXT to confirm.
2. Programming Schedules (7/365 Day Operation)
The timer supports up to 96 ON/OFF cycles. Each program consists of an ON time and an OFF time.
- Press the MODE button until "PROG" or "PROGRAM" is displayed.
- The display will show "1 ON". Use + or - to set the desired ON time (hour and minute), then press ENTER/NEXT.
- Use the DAY button to select the days of the week for this program (e.g., Mon-Fri, Sat-Sun, or individual days). Press ENTER/NEXT.
- The display will then show "1 OFF". Set the desired OFF time using + or -, then press ENTER/NEXT.
- Repeat steps 2-4 for additional programs.
- To exit programming mode, press MODE until the current time is displayed.
3. Manual Override
Press the ON/OFF button to manually switch the connected load ON or OFF, overriding the current program. The timer will resume programmed operation at the next scheduled event.
Maintenance
- Ensure power is disconnected before performing any maintenance.
- Periodically inspect the timer for any signs of damage or loose connections.
- Clean the exterior of the unit with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- The internal capacitor provides backup power for up to 100 hours during power outages. No user maintenance is required for the backup device.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank. | No power to the unit. | Check circuit breaker or disconnect switch. Ensure wiring is correct. |
| Timer not switching load ON/OFF as programmed. | Incorrect program settings; Manual override active; Incorrect time/date. | Verify program settings, current time, and date. Check if manual override is engaged. |
| Buttons are unresponsive. | Temporary software glitch. | Try pressing CLEAR MEM (if safe to clear programs) or temporarily disconnect power for a few seconds and restore. |
Specifications
| Model Number | ET2705C |
| Operation Mode | 7/365 Days |
| Number of Channels | 1 |
| Contact Form | SPST |
| Voltage | 120 to 277Vac |
| Amperage | 30 Amps |
| HP @ 120V | 1 HP |
| HP @ 240V | 2 HP |
| Max. ON/OFF Cycles | 96 |
| Number of Pulse Events | 0 |
| Enclosure | Metal |
| Mounting | Surface |
| Number of Poles | 1 |
| Min. Time Setting | 1 Minute |
| Max. Time Setting | 7 Days |
| NEMA Rating | 1 |
| Color | Gray |
| Backup Device | Capacitor |
| Backup Time | 100 Hours |
| Operating Temperature | -40°F to 155°F (-40°C to 68°C) |
| Product Dimensions (H x W x D) | 7.88" x 5.13" x 3.44" |
| Item Weight | 8 ounces |
| Material | Metal |
| Standards | UL Listed, California Title 20 Listed, LED Listed |
Warranty Information
For detailed warranty information, please refer to the official Intermatic website or the warranty card included with your product. General warranty terms typically cover defects in materials and workmanship for a specified period from the date of purchase.
Customer Support
If you require technical assistance or have questions regarding your Intermatic ET2705C Electronic Timer, please visit the official Intermatic website for support resources, FAQs, and contact information. You may also refer to the contact details provided on the product packaging.
