1. Wprowadzenie
This manual provides detailed instructions for the installation, programming, and operation of your Intermatic ET1725C Electronic 7-Day SPST Timer. This device is designed to automate the control of electrical loads with precise, up-to-the-minute scheduling. It features battery backup for power loss, up to 14 ON/OFF set points per circuit, and automatic daylight saving time corrections.
The ET1725C is an upgrade from basic mechanical time switches, offering enhanced functionality and ease of use. Its contacts can be configured as two independently operated SPST, one simultaneously operated DPST, or independently pulsed SPST for contactor and bell ringing applications. It supports multi-volt operation from 120-277 VAC, 50/60 Hz.
2. Informacje dotyczące bezpieczeństwa
OSTRZEŻENIE: Risk of electrical shock. More than one disconnect switch may be required to de-energize the equipment before servicing. Always disconnect power at the circuit breaker or fuse box before installing or servicing this timer.
Do wszystkich połączeń należy stosować przewody miedziane o grubości 10–18 AWG i temperaturze co najmniej 75°C (167°F).
DO NOT REMOVE THIS INSULATOR. This insulator is critical for safe operation.
Produkt ten zawiera substancje chemiczne, o których władze stanu Kalifornia wiedzą, że mogą powodować raka, wady wrodzone lub inne uszkodzenia układu rozrodczego (ostrzeżenie zgodnie z Propozycją 65).

Rysunek 2.1: Wewnętrzny view of the Intermatic ET1725C timer, highlighting wiring terminals and critical safety warnings printed on the device. This image shows the LCD display, control buttons, battery compartment, and the terminal block with labels for Timer Power, Line 1, Load 1, Line 2, and Load 2. A prominent yellow label warns about electrical shock and conductor requirements.
3. Instalacja
3.1 Montaż
The Intermatic ET1725C timer is designed for enclosure mounting. Ensure the mounting location is suitable for electrical equipment and provides adequate ventilation.

Rysunek 3.1: The closed gray enclosure of the Intermatic ET1725C timer, showing its robust design suitable for various installation environments. The Intermatic logo is embossed on the front.
3.2 Okablowanie
Before wiring, ensure all power to the circuit is disconnected at the main service panel. Refer to the wiring diagrams below for proper connection based on your specific application. The ET1725C supports various configurations including SPST and DPST.

Rysunek 3.2: Comprehensive wiring diagrams for the Intermatic ET1700 series, including configurations for ET1705-120 VAC-SPST, ET1715-SPDT (load switching), ET1725-240 VAC-DPST, ET1725-2x SPST, ET1725-2x SPST (bell ringing), and ET1725-Pulse 2x SPST (bell ringing). These diagrams illustrate connections for Timer Power, Line, Neutral, and Load terminals.
- ET1705-120 VAC-SPST: Connect Line and Neutral to Timer Power. Connect Line to terminal 1 and Load to terminal 2. Install jumper between terminals 3 and 4 if load voltage i wprowadź voltage są takie same.
- ET1715-SPDT (Load Switching): Similar to ET1705, but with additional load connections for switching.
- ET1725-240 VAC-DPST: Connect L1 and L2 to Timer Power. Connect L1 to terminal 1 and L2 to terminal 3. Connect Load to terminals 2 and 4. Configure jumper to "SIM" for simultaneous operation.
- ET1725-2x SPST: For two independent SPST loads. Connect L1/Neutral to Timer Power. Connect L1 to terminal 1 and L2/Neutral to terminal 3. Connect Load 1 to terminal 2 and Load 2 to terminal 4.
- ET1725-Pulse 2x SPST (Bell Ringing): For pulsed applications. Configure jumper to "PUL".
4. Setup & Programming
The ET1725C allows for flexible programming with up to 14 ON/OFF set points per circuit. The timer automatically adjusts for daylight saving time.

Rysunek 4.1: The Intermatic ET1725C timer with its front panel open, revealing the LCD display, programming buttons (MODE, DAY, RESET, ENTER NEXT, ON/OFF), and the battery compartment. An instruction sheet is partially visible, indicating the comprehensive nature of the product's documentation.
4.1 Konfiguracja początkowa
- Włączanie: After installation and power connection, the display should illuminate.
- Ustaw aktualny czas:
- Naciśnij TRYB Naciskaj przycisk, aż pojawi się napis „USTAW CZAS”.
- Użyj UP I W DÓŁ arrows to adjust the hour and minute.
- Naciskać WEJDŹ DALEJ aby potwierdzić.
- Ustaw bieżący dzień:
- Naciśnij DZIEŃ button to cycle through the days of the week until the current day is displayed.
- Czas letni (DST): The timer automatically corrects for DST. Ensure the correct year is set if prompted during initial setup.
4.2 Programowanie zdarzeń WŁ./WYŁ.
The timer allows for up to 14 ON/OFF set points per circuit. Each set point can be assigned to specific days of the week.
- Naciśnij TRYB button until "PROGRAM" appears.
- The display will show "ON 1". Use the UP I W DÓŁ arrows to set the desired ON time for the first event.
- Naciskać WEJDŹ DALEJ.
- The display will show "OFF 1". Use the UP I W DÓŁ arrows to set the desired OFF time for the first event.
- Naciskać WEJDŹ DALEJ.
- The display will show the days of the week. Use the DZIEŃ button to select the days for this program. You can select individual days, weekdays, weekends, or all days.
- Naciskać WEJDŹ DALEJ aby zapisać program.
- Repeat steps 2-7 for additional ON/OFF events (ON 2, OFF 2, etc.).
- Aby wyjść z trybu programowania, naciśnij TRYB Naciskaj przycisk, aż wyświetli się aktualna godzina.
4.3 Sterowanie ręczne
The timer can be manually overridden using the WŁ./WYŁ. buttons. Pressing these buttons will toggle the load's state (ON or OFF) without affecting the programmed schedule. The timer will revert to the schedule at the next programmed event.
5. Działanie
Once programmed, the Intermatic ET1725C will operate automatically according to your set schedule. The LCD display shows the current time, day, and the status of Load 1 and Load 2 (ON/OFF).
- Działanie automatyczne: The timer will activate and deactivate connected loads based on the programmed ON/OFF events.
- Wyświetl informacje: The display provides real-time information on the current time, day, and the operational status of the connected loads.
- Zapas baterii: W przypadku awarii zasilaniatage, the internal battery backup maintains the time and programmed settings. The display may not be active during a power outage to conserve battery life.
6. Konserwacja
6.1 Wymiana baterii
The ET1725C uses a replaceable battery for backup power. If the display becomes dim or the timer loses settings during a power outage, bateria może wymagać wymiany.
- OSTRZEŻENIE: Disconnect all power to the timer at the circuit breaker before opening the unit.
- Open the timer enclosure.
- Zlokalizuj komorę baterii.
- Carefully remove the old battery and replace it with a new, equivalent battery (e.g., standard AAA non-rechargeable alkaline battery).
- Close the battery compartment and the timer enclosure.
- Restore power and verify the timer's functionality.
6.2 Czyszczenie
Clean the exterior of the timer with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure no moisture enters the unit.
7. Rozwiązywanie Problemów
| Problem | Możliwa przyczyna | Rozwiązanie |
|---|---|---|
| Wyświetlacz timera jest pusty. | No power to the unit or dead backup battery. | Check circuit breaker. Ensure proper wiring. Replace backup battery. |
| Obciążenie nie włącza się/wyłącza o zaprogramowanych porach. | Nieprawidłowe programowanie, aktywne ręczne sterowanie lub problem z okablowaniem. | Review programming steps. Check if manual override is active. Verify wiring connections. |
| Czas lub ustawienia są tracone po wyłączeniu zasilaniatage. | Backup battery is weak or dead. | Wymień baterię zapasową. |
| Wyświetlacz jest trudny do odczytania. | Poor lighting conditions or small LCD. | Ensure adequate lighting. This is a known characteristic of some LCDs. |
8. Specyfikacje
- Model: ET1725C
- Marka: Intermatyczny
- Typ: Electronic 7-Day Timer
- Zmień styl: SPST/DPST (field configurable)
- Tomtage: 120-277 VAC, 50/60 Hz (Multi-volt operation)
- Liczba ustawień: Up to 14 ON/OFF set points per circuit (28 total)
- Temperatura pracy: -40°F do 155°F (-40°C do 68°C)
- Tworzywo: Obudowa metalowa
- Kolor: Szary
- Wymiary produktu: 3.3" gł. x 8.1" szer. x 5.3" wys.
- Waga przedmiotu: 2.8 funtów
- Typ montażu: Załącznik
- Zawartość zestawu: Jednostka, instrukcja obsługi
- Typ baterii: Alkaline (for backup, not included)
- Kod UPC: 094705211373, 784497620063, 078275109865
9. Gwarancja i pomoc techniczna
9.1 Informacje o gwarancji
The Intermatic ET1725C Electronic Timer comes with a 1-year warranty. This warranty covers replacement of the unit due to manufacturing defects but does not cover labor costs associated with removal or reinstallation. Please retain your proof of purchase for warranty claims.
9.2 Obsługa klienta
For technical assistance, troubleshooting, or warranty inquiries, please contact Intermatic customer support. Refer to the official Intermatic website or the included instruction guide for current contact information.





