Myenergi eddi 16A1P01H User manual

Rev 2.0.2 DRAFT June 2022 – ENGLISH
eddi
microgeneration energy diverter
Installation Manual
MODELS: 16A1P01H
D3201

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Contents
1. Introduction................................................................................................................................................................................. 3
2. Safety ............................................................................................................................................................................................ 3
3. Disposal ........................................................................................................................................................................................ 3
4. Copyright ..................................................................................................................................................................................... 3
5. Overview.......................................................................................................................................................................................4
5.1 Overview Diagram...........................................................................................................................................................4
6. Box Contents............................................................................................................................................................................... 6
a. Optional: Relay & Sensor Board...................................................................................................................................... 6
7. Connectivity ................................................................................................................................................................................ 6
7.1 Wireless Connection....................................................................................................................................................... 6
7.2 Ethernet or WiFi Connections ..................................................................................................................................... 7
8. Installation ...................................................................................................................................................................................8
8.1 Mounting............................................................................................................................................................................8
8.2 Clearances......................................................................................................................................................................... 8
8.3 Wiring .................................................................................................................................................................................. 9
8.4 CT Sensor Installation .................................................................................................................................................. 11
8.5 Advanced Installation Options.................................................................................................................................. 13
8.6 Relay & Sensor Board ................................................................................................................................................. 15
8.7Fitting the Cover ........................................................................................................................................................... 16
9Set-up.......................................................................................................................................................................................... 16
9.1 Switching On................................................................................................................................................................... 16
9.2 Testing...............................................................................................................................................................................17
10 Application Examples ....................................................................................................................................................... 18
10.1 Dual Element Water Heater....................................................................................................................................... 18
10.2 Economy Tariff with Dual Rate Meter ................................................................................................................... 20
10.3 Economy Tariff with Separate Meters................................................................................................................... 22
10.4 Underfloor Heating Mat and Water Heating........................................................................................................ 24
10.5 Water Heater with Auxiliary Boiler Control – S Plan ........................................................................................ 26
10.6 Heat Pump with Water Heating and Buffer Tank............................................................................................... 28
10.7 Heat Pump with Water Heating and Priority Control ....................................................................................... 30
10.8 Pool and Water Heating ............................................................................................................................................. 32
11 Fault Codes ......................................................................................................................................................................... 34
12 Technical Support............................................................................................................................................................. 35
13 Declaration of Conformity.............................................................................................................................................. 35

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1. Introduction
Thank you for choosing eddi. Of course, we think you have made an excellent choice and are sure you will be
very happy with the features, benefits, and quality of your myenergi product.
eddi is an automatic power controller. It ‘tracks’ available surplus power from a grid-tied PV or Wind turbine
system and varies the power to your heater to match the surplus power, therefore ensuring all of the green
energy is fully utilised.
These instructions will help you to familiarise yourself with the eddi. By reading the instructions, you will be
sure to get the maximum benefit from your 'eco-smart' device.
varisine™ Technology
varisine™ is the proprietary power control technology used in the eddi. The technology
enables the output voltage to be very smoothly adjusted in order to alter the power to the
heater. The power to the heater is always a sine wave and only the voltage is altered.
This control technology is more sophisticated than many other products on the market and
the technology ensures trouble free operation with all inverters and compatibility with all
import/export energy monitors and electric meters.
2. Safety
The device has been manufactured in accordance with the state of the art and the recognised safety standards,
however, incorrect operation or misuse may result in:
Injury or death to the operator or third parties
Damage to the device and other property of the operator
Inefficient operation of the device
All persons involved in commissioning, maintaining, and servicing the device must:
Be suitably qualified and competent
Have knowledge of and experience in dealing with electrical installations
Read and follow these operating instructions carefully
Always disconnect the device from the supply before removing the cover
3. Disposal
4.
In accordance with European Directive 2012/19/EU on waste electrical and electronic equipment and its
implementation in national law, used electrical devices must be collected separately and recycled in an
environmentally responsible manner. In the UK these requirements are covered by The Waste Electric and
Electronic Equipment (WEEE) Regulations 2013. Ensure that you return your used device to your dealer or
obtain information regarding a local, authorised collection and disposal system. Failure to comply with this EU
Directive may result in a negative impact on the environment.
4. Copyright
Copyright of these operating instructions remains with the manufacturer. Text and images correspond to the
technical level at the time of going to press. We reserve the right to make changes. The content of the operating
instructions shall not give rise to any claims on the part of the purchaser. We are grateful for any suggestions
for improvement and notices of errors in the operating instructions.
myenergi zappi, myenergi eddi and myenergi harvi are registered trademarks of myenergi Ltd.

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5. Overview
Microgeneration systems such as Solar PV and small wind turbines are at their most efficient when the
generated energy is consumed on-site rather than exporting it to the grid. This is what we call 'self-
consumption'.
eddi is an energy management system for use with grid-tied PV or wind turbine systems. Excess energy from
the microgeneration system is used to heat water or rooms rather than exporting it to the grid.
A grid current sensor (supplied) simply clips around the incoming cable. This sensor is used to monitor excess
power and eddi automatically adjusts the voltage to the heater load, thereby consuming the surplus power. A
self-powered wireless sensor (harvi) is available separately.
An internal expansion interface provides a means to install a Relay & Sensor Board to enable various functions
such as auto switching from day-time and night-time supply, heat pump interfacing for Legionella control and
temperature sensing.
eddi utilises myenergi’s proprietary varisine™ technology to ensure compliance with worldwide power grid
standards.
Feature Set
3.68kW nominal/16A max. heater load
Supports two heaters (subsequentially)
Integral bypass switch
varisine™ PWM technology
Fan-less cooling
Built-in programmable boost timers
Energy savings data logging
Graphical back-lit LCD screen for ease of use
Overload and short-circuit protection
Automatic Daylight Saving Time adjustment
Relay & Sensor Board add-on option
Wall mounting bracket for ease of installation
Fully EMC and safety compliant (CE)
3-year warranty (with the option of adding an Extended Warranty of 2 extra years)
Integrated WiFi for connecting to internet
RJ45 connector for the option of hardwired Ethernet connection
5.1 Overview Diagram
The diagram on the next page shows the eddi as part of a complete energy management system. Other
myenergi products are shown with details of how they integrate with the grid connection and the
microgeneration system.

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6. Box Contents
1 x eddi unit with mounting bracket attached
1 x Current transformer with 5m cable (Grid CT sensor)
2 x Antenna
1 x Quick Start Guide
1 x vHub & WiFi Operation Manual
4x screws (for use on cable clamps)
6.1 Optional: Relay & Sensor Board
The relay sensor board is an optional add-on to the eddi and allows the use of multiple wiring configurations.
It includes:
Relays with a capacity for 16A
Two temperature sensor units (PT1000)
eSense input (isolated detection for economy tariff)
The two relays can be independently set for several functions or set to operate as a pair.
These functions include:
Export/Import Threshold
Operate when heating and timed operation
De-stratification pump control
Fault signal for BMS systems
7. Connectivity
7.1 Wireless Connection
myenergi devices use an 868MHz/915MHz wireless link to communicate with each other. Although this is
usually more effective at passing through walls than a standard WiFi signal, radio communication can be
affected by many factors such as:
the distance between the devices
the thickness of any walls that the signal has to pass through
wall construction and insulation materials
large metal objects such as washing machines, fridges, sinks and baths
mirrors
electronic products such as televisions
other wireless devices operating on the same radio frequency
Please consider the position of your myenergi devices carefully to ensure that they operate as planned.
Although the devices work in the majority of installations and our technical support team are available to
provide help in setting up your system, we cannot guarantee the performance where circumstances beyond
our control affect the performance of the wireless link.
If you have any concerns about the wireless performance then we would be pleased to answer your questions,
but please consider that if a WiFi signal works OK then there is a very high probability that the myenergi
devices will also work without any issues.

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7.2 Ethernet or WiFi Connections
eddi’s with the built-in vHub (identified by product code EDDI-2Hxxxx) are supplied with a built-in Ethernet
port (RJ45) socket and WiFi to connect eddi to the local area network (LAN).
All myenergi internet capable devices should be connected to the internet via either WiFi or a hardwired
Ethernet connection.
This version of the eddi can also act as the “gateway” or “hub” between all your myenergi devices and the
myenergi server. The gateway device MUST be connected to the internet.
Note: harvi can only be connected using a wireless link to the Master device
If radio connection is not possible you have the option to tether two devices using an Ethernet cable. When
pairing devices, they will automatically use the Ethernet link if available.
Further detail on the Ethernet connection and WiFi see separate vHub & WiFi manual.

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8. Installation
8.1 Mounting
Step 1: With the unit on its back on a flat surface, remove the front cover by unscrewing the two screws (1)
on the front of the device and lifting it off.
Step 2: Loosen the two mounting bracket securing screws (2) and separate the bracket (3) from the eddi.
Step 3: Place the bracket against the wall where you will be installing the device and mark the holes ready
for drilling. (If fixing to timber stud you can use the two central vertically aligned points to screw the bracket
directly into the timber.
8.2 Clearances
NOTE
eddi is NOT suitable for installation outdoors
Ensure the device always has adequate ventilation; do not block the vents or obstruct airflow at
the back of the unit.
eddi must be fixed to a flat vertical surface using the dedicated mounting bracket which comes
attached to the unit.
NOTE
Suitable fixings must be used dependant on application/mounting surface. To be determined by installer.

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8.3 Wiring
8.3.1 Strip Length
8.3.2 Supply
The eddi device should be connected to a single-phase 230V or 240V nominal AC supply. The supply should
be from a dedicated 16A circuit breaker, or it can be from a hard-wired 13A fused spur outlet if the heater load
is less than 3kW.
8.3.3 Heater Loads
Most purely resistive heaters can be used with eddi, examples include immersion heaters, storage heaters,
convection heaters and underfloor heating mats. Refer to the Application and Examples section for wiring
diagrams using different heater types. Whichever heater type is used, the following criteria must always be
observed:
One or two purely resistive loads may be connected (Note: only one is live at any one time)
Maximum rating of each load is 3.68kW
Minimum heater rating is 150W
Resistive loads only
The loads neutral conductor must be connected to heater output N terminal
No electronic controls to be connected to Heater terminals; mechanical thermostats only
No timers to be connected to Heater terminals, including mechanical timers
8.3.4 Cable Clamps
If using flexible cables or cables not secured by other means, the cable clamps must be used to secure the
supply and heater cables.
8.3.5 Wiring Overview Diagram
The diagram on the following page gives an overview of the wiring required for a standard installation with the
eddi connected to one or two heaters.
WARNING!
ELECTRIC SHOCK – An electric shock can be fatal; electrical connection work may only be carried out by
a competent person. The earth conductor must be correctly installed and reliably connected. This device
must be equipped with an over-current protection device of maximum 16 Amps (B16). Only purely resistive
loads must be connected to the Heater output terminals.

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