Intermatic ET2845C - User Manual

Electronic 4-Circuit
Astronomic 365/7-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 conguration of the Intermatic ET2845
4-Circuit Electronic Astronomic 365/7-Day Time Switch. The ET2845 time switch
automatically switches loads according to the weekly schedule that is entered.
The time switch can support up to 48 xed ON and 48 xed OFF events (96 total)
and up to 8 Astro events. Each xed 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
conguring DST switchover dates.
Follow these instructions to complete the installation and programming of the
ET2845 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 ac-cordance 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 ET2845C, ET2845CR, ET2845CP
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

Safety Warnings and Product Description

Risk of Fire or Electric Shock

Critical safety precautions to prevent electric shock and fire hazards during installation and servicing.

Product Description

Overview of the Intermatic ET2845 time switch features, capabilities, and programming.

FCC Compliance Notice

Regulatory information regarding radio frequency interference for the ET2000 Series.

Installation and Initial Setup

Installation Procedure

Step-by-step instructions for physically mounting and wiring the time switch.

Wiring Diagrams

Visual guides illustrating various electrical connection configurations for the time switch.

Initial Setup Steps

Configuration of output, date, time, Daylight Saving Time (DST), and time zones.

Programming Overview

General steps for programming events, schedules, and settings on the time switch.

Setting Astro Zone and Time

Configuring geographical location for astronomic events and setting the device's time.

Event and Mode Programming

Setting Astronomic On;Off Events

Configuring ON/OFF events based on sunset and sunup times for each circuit.

Setting Fixed Timed Events

Programming specific ON/OFF times for circuits on selected days of the week.

Setting Holidays

Programming date ranges to override normal schedules with special ON/OFF events.

Setting Operating Mode

Selecting the operational mode: AUTO, ENERGY SAVER, or MANUAL.

Advanced Operations and Specifications

Event and Memory Management

Procedures for deleting individual events and clearing the entire time switch memory.

USB Data Transfer Operations

Instructions for writing and reading program data to and from a USB memory stick.

USB Error Codes

Description of error codes encountered during USB operations.

Technical Specifications

Details on input voltage, power consumption, contact ratings, wire size, and enclosures.

Limited Two-Year Warranty

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features
5. Warranty

The Intermatic ET2845 is an Electronic 4-Circuit Astronomic 365/7-Day Time Switch designed for automatic control of electrical loads based on a weekly schedule, with a 100-hour supercapacitor backup. This device is available in three models: ET2845C (Type 1 indoor lockable metal enclosure), ET2845CR (Rainproof Type 3R indoor/outdoor lockable metal enclosure), and ET2845CP (Rainproof Type 3R indoor/outdoor lockable plastic enclosure).

Function Description:

The ET2845 time switch automatically switches loads according to a programmed weekly schedule. It supports up to 48 fixed ON and 48 fixed OFF events (96 total), and up to 8 Astronomic (Astro) events. Each fixed event can be applied to any combination of circuits and days. The astronomic feature provides a sunset ON event and a sunup OFF event for each circuit, which automatically adjust to the actual changes in sunset and sunup times based on the geographical location (astro zone) set in the device. Users can also configure offset times for sunup and sunset events, allowing circuits to turn on or off either before or after the actual astronomic times.

The device offers three output configurations:

• SIM (Simultaneously): Controls multiple loads at once.
• IND (Independently): Controls loads individually.
• PUL (Pulse): Provides a 2-second pulse. In PUL mode, an ON event or manual override causes circuit #1 to turn ON for two seconds, then OFF. An OFF event or manual override causes circuit #2 to turn ON for two seconds, then OFF.

The time switch features an LCD and panel-mounted control buttons for setup, review, and monitoring. Functions include setting date and time, schedule creation, enabling/disabling Daylight Saving Time (DST), and configuring DST switchover dates. The device can operate in three modes: AUTO, ENERGY SAVER, or MANUAL. MANUAL mode is only available if no scheduled events are programmed. If left inactive for five minutes in a programming mode, it will return to the AUTO mode screen.

Important Technical Specifications:

• Input Voltage: 120-277 VAC, 60 Hz (auto voltage sensing, no jumpers required).
• Power Consumption: 7 W MAX.
• Contact Configuration: SPST x 4.
• Contact Ratings:
  • 30 A Resistive: 120-240 VAC, 60 Hz
  • 20 A Resistive: 28 VDC
  • 30 A Inductive: 120-240 VAC, 60 Hz
  • 20 A Magnetic Ballast: 120-277 VAC, 60 Hz
  • 5 A Tungsten: 120-277 VAC, 60 Hz
  • 1 HP Motor: 120 VAC, 60 Hz
  • 2 HP Motor: 240 VAC, 60 Hz
  • 10 A Electronic Ballast: 120/277 VAC, 60 Hz
• Events: Supports up to 48 fixed ON/OFF events and 1 astro ON/OFF event per circuit.
• Clock Backup: 100-hour Supercapacitor.
• Wire Size: AWG #14-#8 copper conductors, rated at least 105°C.
• Minimum ON or OFF Time: 1 minute.
• Maximum ON or OFF Time: Indefinite.
• Shipping Weight: 2.5 lb. (1.1 kg).
• Knockouts: Combination 1/2-3/4 inch size, with 1 on rear, 1 on each side, and 2 on bottom.

Usage Features:

• Installation: Requires disconnection of power at the circuit breaker(s) or disconnect switch(es). For plastic enclosures, bonding between conduit connections must be provided. Wiring must comply with National and Local Electrical Code requirements, using #14-#8 AWG copper wires. Conduit hubs complying with UL514B are required for outdoor/wet locations.
• Programming: The device allows setting current date, time, Astro zone, Astro events, fixed events, DST, and Holiday events. DST can be enabled/disabled, and rules (US2007, MX1986, or CUSTOM) can be configured. Astro zone setup involves selecting country, state/province, and geographical section. Custom latitude and longitude adjustments are possible for greater accuracy.
• Event Management: Fixed timed events can be set for specific ON/OFF times, days of the week, and circuits. Holiday events can be programmed for specific dates, with options for "OFF" state or "HOLIDAY" override.
• USB Memory Stick Functionality: The time switch can read and write program data (event schedules, holidays, output configuration, DST settings, geographical location) to/from a USB memory stick. This allows for easy transfer of programming between devices. Error codes are displayed for USB-related issues (e.g., write protection, full stick, incompatible format, defective device).
• Event Deletion: Individual Astro or fixed events can be deleted by navigating to the event and simultaneously pressing the '+' and '-' buttons.
• Memory Clearing: A "Clear Time Switch Memory" operation resets all programmed settings to factory defaults. This is performed by pressing and holding ENTER/NEXT while pressing and releasing the RESET button.

Maintenance Features:

• Safety: Users are warned to disconnect power before servicing, avoid exceeding maximum current carrying capacity, and keep the door closed when not servicing. Do not remove the insulator covering terminals.
• Circuit Board Protection: A notice advises against touching circuit board components to prevent damage from static discharge.
• Backup: The 100-hour supercapacitor provides backup for the clock, ensuring settings are retained during power outages.
• FCC Compliance: The device complies with Part 15 of the FCC rules, designed to provide reasonable protection against harmful interference in a commercial environment. Users in residential areas are responsible for correcting any interference caused.

Warranty:

Intermatic Incorporated provides a limited two-year warranty, covering defects in material or workmanship. The warranty allows for repair or replacement at Intermatic's sole option, free of charge, to the original household purchaser. It does not cover damage from accident, abuse, unauthorized repair, non-compliance with instructions, damages exceeding product cost, sealed lamps/LEDs/batteries, finish wear and tear, or transit/installation costs. Intermatic is not liable for incidental or consequential damages. Warranty service can be obtained by returning the product to the dealer or by completing a claim online.

Intermatic ET2845C Specifications