Leading provider of energy-saving heating controls, thermostats, and diverse electronic solutions including professional audio and communications.
ESi is a brand designation shared by several distinct technology manufacturers, most notably Mana ESi, a UK-based leader in energy-saving heating solutions. ESi Controls designs and manufactures an extensive range of heating programmers, programmable room thermostats, cylinder thermostats, and motorized valves. Their products, such as the Mistral and Cirrus series, are designed to improve energy efficiency in residential and commercial properties while ensuring compliance with modern building regulations.
In addition to heating controls, this category encompasses products from ESI Ororongo (ESI Audiotechnik GmbH), a manufacturer of professional audio equipment including the MAYA44 and U22 XT audio interfaces and Xsynth synthesizers. It also includes business communication systems from ESI (Estech Systems, Inc.), known for the ePhone series and enterprise cloud communication solutions.
This page serves as a central hub for user manuals, installation guides, and support documentation across these diverse product lines sharing the ESi brand name.
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You can register your ESi Controls product online at the official warranty page within 30 days of purchase to qualify for an extended warranty.
For many ESi thermostats like the ESCTDEP, you can reset the device by turning the dial to number 1, removing the dial, and pressing the reset button located at the 11 o'clock position for 3 seconds.
The Anti-Legionella boost automatically heats the cylinder water to above 60°C (usually 61°C) designated intervals (e.g., once a week) to prevent bacterial growth.
For ESI Audio products like the U22 XT or MAYA44, drivers and firmware updates can be downloaded from the ESI Audio website under the specific product support section.