Intermatic ET2805C - User Manual

Electronic 1-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 conguration of the Intermatic ET2805 1-Circuit
Electronic Astronomic 7-Day Time Switch. The ET2805 time switch automatically switches
loads according to the entered weekly schedule. The time switch can support up to 48
xed ON and 48 xed OFF events (96 total) and up to 2 Astro events. Each xed event can
be applied to any combination of 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 ET2805 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 ET2805C, ET2805CR, ET2805CP
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

Electrical Safety Instructions

Disconnect power before servicing, use proper wiring, and ensure secure connections.

Important Notices

Static Discharge Warning

Avoid touching circuit board components to prevent damage from static discharge.

Product Description

Installation Guide

Installation Steps

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

Wiring Diagrams

Initial Setup and Programming

Programming Overview

Overview of programming steps including date, time, Astro, DST, and events.

Setting Date

Procedure to set the current date (month, day, year) on the time switch.

Setting Time and Daylight Saving

Setting the Current Time

Instructions for setting the current hour, minute, and seconds.

Setting Daylight Saving Time

Configure automatic DST adjustments using US, Mexico, or custom rules.

Geographical and Time Zone Settings

Setting the Astro Zone

Select country, state/province, and geographical section for accurate sunup/sunset times.

Astronomic Event Offsets

Adjusting Sunup and Sunset Times

Modify sunup and sunset times by a specific offset in minutes.

Programming Events

Setting Astronomic On;Off Events

Configure automatic ON/OFF events based on sunset and sunup times.

Setting Fixed Timed Events

Setting Fixed ON;OFF Times

Program specific ON and OFF times for circuits on selected days.

Setting Holidays

Programming Holiday Blocks

Set start and end dates for holidays to control circuit operation.

Setting Operating Mode

Selecting Operating Modes

Choose between AUTO, ENERGY SAVER, or MANUAL operating modes.

Managing Events

Deleting an Event

Procedure to remove programmed Astro or fixed events from the time switch.

Clearing Time Switch Memory

Resetting to Factory Defaults

Steps to clear all programmed settings and restore factory defaults.

USB Memory Stick Operations

Saving Program Data to USB

Transfer programmed settings from the time switch to a USB memory stick.

Loading Program Data from USB

Load programmed settings from a USB memory stick to the time switch.

Troubleshooting USB Errors

Understanding USB Error Codes

List and explanation of error codes encountered during USB operations.

Product Specifications

Technical Specifications

Details on input voltage, power consumption, switch ratings, and enclosure types.

Warranty Information

Two-Year Limited Warranty

Details of the limited two-year warranty coverage and exclusions.

Overview

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

The Intermatic ET2805C, ET2805CR, and ET2805CP are 1-circuit electronic astronomic 7-day time switches designed for automatic load switching based on a weekly schedule. These devices offer a 100-hour backup, ensuring settings are retained during power outages.

Function Description:

The ET2805 series time switches automatically control electrical loads by switching them ON and OFF according to a programmed weekly schedule. They support up to 48 fixed ON and 48 fixed OFF events (96 total), which can be applied to any combination of days. Additionally, they feature two astronomic events (one ON at sunset and one OFF at sunup) that automatically adjust to the actual sunrise and sunset times based on the geographical location (Astro zone) set by the user. Users can also configure offset times for sunup and sunset events, allowing loads to switch before or after the actual astronomic times. The device includes holiday programming, with up to 50 holiday blocks, each with a start and end date, during which the relays remain OFF. The time switch can operate in three modes: AUTO (default, follows programmed events), ENERGY SAVER (similar to AUTO but with manual ON/OFF activations limited to a 2-hour period, extendable by 2 hours with additional presses), and MANUAL (does not follow programmed events, circuit activated only by the ON/OFF button).

Important Technical Specifications:

• Input Voltage: 120-277 VAC, 60 Hz
• Power Consumption: 3 W MAX
• Switch Configuration: SPST x 1
• 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)
• Enclosures:
  • ET2805CR: Rainproof Type 3R indoor/outdoor lockable metal enclosure
  • ET2805C: Type 1 indoor lockable metal enclosure
  • ET2805CP: Rainproof Type 3R indoor/outdoor lockable plastic enclosure
• Knockouts: Combination 1/2-3/4 inch size, with one on the rear and each side, and two on the bottom.

Switch 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
• 10 A Electronic 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

Usage Features:

The time switch features an LCD and panel-mounted control buttons for setup, review, and monitoring.

• Date and Time Setting: Users can set the current month, day, year, and time.
• Daylight Saving Time (DST) Configuration: The device can be configured to automatically adjust for DST. Users can enable/disable DST and select predefined rules (US2007, MX1986) or set custom start/end dates for DST.
• Astro Zone Setting: Users select their country (USA, Canada, or Mexico), state/province, and geographical section (e.g., North, South, East, West, Center, Northeast, Northwest, Southeast, Southwest). For greater accuracy, latitude and longitude can be adjusted.
• Astronomic ON/OFF Events: One Astronomic ON (at sunset) and one Astronomic OFF (at sunup) event can be enabled for selected days. Offset times (up to 2 hours before or after) can be programmed for both sunup and sunset.
• Fixed Timed Events: Up to 48 fixed ON and 48 fixed OFF events can be set with specific times and applied to any combination of days. Odd-numbered events are for ON switching, and even-numbered events are for OFF switching.
• Holiday Programming: Up to 50 holiday blocks can be programmed with start and end dates. During these periods, the relays remain OFF, and only programmed holiday events will trigger relay operations.
• Operating Modes: AUTO, ENERGY SAVER, and MANUAL modes provide flexibility in how the time switch operates.
• Event Management: Individual Astro and fixed events can be deleted.
• USB Memory Stick Functionality: The device supports reading and writing program data (event schedules, holidays, output configuration, DST settings, geographical location) to/from a USB memory stick, simplifying setup and backup. Error codes are displayed for USB-related issues (e.g., write-protected stick, full stick, defective stick, incompatible file format).

Maintenance Features:

• Clear Time Switch Memory: A "Clear Time Switch Memory" operation resets all programmed settings to factory default values. This process displays model information, firmware revisions, and a "MEMCLR" followed by "DONE" upon completion. This is initiated by holding ENTER/NEXT and pressing the RESET button.
• Installation and Wiring: Installation requires disconnecting power, using #14-#8 AWG copper wires rated at least 105°C, and adhering to National and Local Electrical Code requirements. For plastic enclosures, bonding between conduit connections must be provided. For outdoor/wet locations, UL514B compliant conduit hubs must be used.
• Safety Precautions: Warnings include disconnecting power before servicing, ensuring proper wire insulation, firmly tightening terminal screws, not exceeding maximum current capacity, and keeping the door closed when not servicing. A notice advises against touching circuit board components to prevent static discharge damage.

The device is covered by a limited two-year warranty, covering defects in material or workmanship, but excluding damage from accidents, abuse, unauthorized repair, or non-compliance with instructions. Warranty service can be obtained by returning the product to the dealer or by completing a warranty claim online.

Intermatic ET2805C Specifications