Myenergi eddi Specification sheet

eddi
operation and
installation manual
myenergi.uk
Rev 1.0 August 2017

Contents
Introduction..........................................................................................................................................4
Safety...............................................................................................................................................................................4
Overview.........................................................................................................................................................................5
Bo Contents...................................................................................................................................................................5
Operation..............................................................................................................................................7
Controls & Indicators.......................................................................................................................................................7
Display.............................................................................................................................................................................8
Operating Modes..........................................................................................................................................................10
Manual Boost................................................................................................................................................................11
Boost Timer...................................................................................................................................................................12
Menus.................................................................................................................................................14
Main Menu....................................................................................................................................................................14
Advanced Menu............................................................................................................................................................15
Relay & Sensor Menu....................................................................................................................................................16
Configuration......................................................................................................................................19
Settings..........................................................................................................................................................................19
Advanced Settings.........................................................................................................................................................20
Linking Devices..............................................................................................................................................................21
Installation..........................................................................................................................................23
Wiring............................................................................................................................................................................24
Sensor Installation.........................................................................................................................................................26
Relay & Sensor Board....................................................................................................................................................28
Fitting the Cover............................................................................................................................................................29
Setup.............................................................................................................................................................................30
Application E amples..........................................................................................................................31
1: Single Element Water Heater....................................................................................................................................32
2: Dual Element Water Heater......................................................................................................................................34
3: Economy Tariff with Dual Rate Meter.......................................................................................................................36
4: Economy Tariff with Separate Meters (Heater 1).....................................................................................................38
5: Economy Tariff with Separate Meters (Heater 2).....................................................................................................40
6: Radiator and Water Heating.....................................................................................................................................42
7: Underfloor Heating Mat and Water Heating............................................................................................................44
8: Water Heater with De-stratification Pump...............................................................................................................46
9: Water Heater with Au iliary Boiler Control – Y Plan.................................................................................................48
10: Water Heater with Au iliary Boiler Control – S Plan...............................................................................................50
11: Heat Pump with Water Heating..............................................................................................................................52
12: Heat Pump with Water Heating and Buffer Tank....................................................................................................54
13: Heat Pump with Water Heating and Priority Control.............................................................................................56
14: Pool and Water Heating.........................................................................................................................................58
Troubleshooting..................................................................................................................................60
Fault Codes....................................................................................................................................................................61
Warranty.............................................................................................................................................62
Technical Specifications......................................................................................................................63

Introduction
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 this myenergi product.
eddi is an automatic power controller for heaters. It 'tracks' available surplus power from a grid tied PV or Wind turbine
system and varies the power to the 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 this '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 kept as sine wave, only the voltage amplitude 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.
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
Have knowledge of and e perience in dealing with electrical installations
Read and follow these operating instructions carefully
Always disconnect the device from the supply before removing the cover
The device is not to be used by persons (including children) with reduced physical, sensory or mental capabilities, or lack of
experience and knowledge, unless they have been given supervision or instruction concerning use of the device by a person
responsible for their safety.
The heatsink (at the rear of the device) can at times reach high temperatures
Disposal
In accordance with European Directive 2002/96/EC 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.
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.
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.
4eddi operation and installation manual

Introduction
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
microgenertation 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 supply 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 / 16A max. heater load
◦Supports two heaters (sequentially)
◦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
Overview Diagram
The diagram over the page, shows the eddi as part of a complete energy management system. Other myenergi products
are shown and how they integrate with the grid connection and the microgeneration system.
Bo Contents
◦1x eddi unit with mounting bracket attached
◦1x Current Transformer with 5m cable (Grid Sensor)
◦1x Antenna
◦1x Operation & Installation Manual
operation and installation manual eddi 5

Introduction
6eddi operation and installation manual
PV ARRAY
INVERTER
HOT WATER
CYLINDER
SUPPLY
GRID
ELECTRICITY
METER
CONSUMER
UNIT
FiT
METER
Clip on sensor
with option of
wired or
wireless
zappi
Features special ECO
charge modes to
manage EV charging
with surplus power
from microgeneration varisine™
Technology ensures loads
are supplied by a clean AC
sine wave – only the
voltage is varied
harvi
Harvests power from the
sensor and transmits the
import/export
information to the load
controlling devices
Wiring or batteries not
required!
eddi
Continually adjusts
the power to the
heater elements,
making full use of
surplus green energy
without importing
from the grid
Overview Diagram

Operation
Operation
Controls & Indicators
Display Graphical LCD display with LED backlight
Power on indicator Illuminates when:
Unit is connected to the mains supply and;
the BYPASS switch is in the ON position (I)
Control buttons Four tactile buttons used to navigate the menus and alter settings:
Enter menu (from main screen)| Exit current menu
Move up a menu item | Increase value
Move down a menu item | Decrease value
Boost | Select item | Confirm value and move to next setting
Heater output indicators (1 &2) Illuminates when the respective heater output (1 or 2) is active
The brightness will vary with the output voltage
If both 1 & 2 are lit together, the heaters are at maximum temperature
ON/OFF and BYPASS switch This switch has three positions:
I ON eddi is on (this is the normal position)
0 OFF eddi is off (the power on indicator will be off)
II BYPASS eddi is bypassed; the mains supply is directly
connected to the Heater 1 output. In this position the
Power indicator will be off and the Heater 1 indicator will be
illuminated.
operation and installation manual eddi 7
1
2
3
4
5
1
2
3
4
5

Operation
Display
Import / E port Power The power being either imported or exported from or to the grid (kW). The
direction of the arrows indicate if the property is currently importing power
(left) or exporting power (right)
The size of arrows is proportion to the level of power. When the property is
neither importing or exporting power, the figure will be 0.0kW and there will no
animated arrows. The property is then said to be 'in balance'
House Load Power The power that the property is currently using in kW
It does not include any surplus power being sent to the heater(s)
Note: This is displayed only when the Generation Sensor is installed (either connected to CT2 input
or a harvi device)
Operating Mode The current operating mode is displayed here (see Operating Modes page 10)
Generation Power The power being generated at this time in kW
Note: This is displayed only when the Generation Sensor is installed (either connected to CT2 input
or a harvi device)
Message Icon When this icon is present there is a message from the myenergi server
This only applies if you have the myenergi hub device
Date & Time The current date and time
Status Icons These icons indicate that the import limiting is active (house), a relay is on (R1 /
R2) or the e Sense input is live (e)
eddi Icon This eddi unit. If there are wavy lines above the icon, the unit is thermally
limiting (the output power will be temporarily reduced)
Energy Diverted Today The accumulated energy that has been sent to heater(s) today
Only the surplus energy is included
Temperature If the optional Relay & Sensor Board (see page 28)is fitted and temperature
probes are installed, the temperature of the active heater is displayed
Heater Icon This icon represents the active heater, and next to it is the heater number
Power Diverting to Heater When eddi is heating, arrows will show here along with the power in kW
8eddi operation and installation manual
4
2
1
11
6
7
5
10
98
12
3
1
2
3
4
5
6
7
8
9
11
12
10

Operation
Display Icons Key
House Consumption – Not Importing Heater – Top Immersion
House Consumption – Importing Heater – Bottom Immersion
Solar Generation Power Heater – Radiator
Wind Generation Power Heater – Underfloor
Grid Power – Import / E port Heater – Swimming Pool
Power Flow Direction – Small Amount Select Relay
Power Flow Direction – Medium Amount Message Available
Power Flow Direction – Large Amount Import Power Limiting Active
Waiting For Surplus Power Relay 1 or 2 – On
Ma imum Heater Temperature Reached Economy Tariff Electricity Available
eddi Device – Normal Active Heater Number
eddi Device – Too Warm (output limited) Instantaneous Power
Accumulated Energy Today
operation and installation manual eddi 9

Operation
Operating Modes
Waiting for Surplus
eddi is waiting for surplus power from the microgeneration system.
The house in the centre is straight faced as grid electricity is being used
by the house (0.8kW is this example).
We can see that eddi hasn't started heating with surplus power yet today
as there is no accumulated energy; the 0.00kWh under the water
cylinder symbol.
Heating
eddi is now diverting power to the heater.
The heater currently being heated is shown by the icon on the right and
the small number (1 in this case) corresponds to the heater number.
The amount of power being diverted at any one moment is shown
between the eddi icon and the heater icon (in this screenshot the
diverted power is 1.6kW).
All of the surplus energy which has been set to the heater today is
displayed under the heater icon (1.30kWh) in this example.
Now the house is smiling because there is no grid electricity being used.
Ma Temp Reached
The heater is now at maximum temperature.
Now there are no arrows or power figures for the heater and a
thermometer symbol is shown.
As eddi is no longer able to divert the surplus power to the heater and so
this is now exported to the grid (0.8kW in this example).
If there is a second heater present (connected to Heater 2), eddi will
switch over to start heating Heater 2.
Boosting
Boosting means eddi is giving maximum power to the heater,
irrespective of available surplus power.
The arrows going to the heater are large and the power figure (3.0kW in
the example screen) is the heaters' maximum power level.
During a boost , it is likely that there will be power imported from the
grid (2.8kW here).
The timer starts at (1h00 ) and will count down until the boost ends. The
boost duration may be altered with the or buttons.
10 eddi operation and installation manual

Operation
Manual Boost
A heater can be 'boosted' to full power for a short period regardless of the amount of available export power, this function
is called Manual Boost and is activated from the main screen. Once the boost starts, the remaining boost period will be
displayed, this will start with a duration of 1 hour, this can be adjusted during the boost. The boost can be cancelled at any
time.
Activating Manual Boost
1. From the main screen, press
2. If there is more than one heater you may select which
heater you wish to boost by pressing or to
change heater. Press to start boost
3. The boost duration may be altered by pressing or
during the boost
Cancelling Manual Boost
The boost can be cancelled at by pressing twice
operation and installation manual eddi 11

Operation
Boost Timer
eddi can be programmed to 'boost' the heating for each heater at certain times. Boost, means that the heater will be at full
power regardless of the amount of available export power. This means that power may be drawn from the mains grid
supply during boost times.
There are four editable time slots for each heater.
Setting the duration to 0h00 will make the boost inactive.
Programming Boost Times
1. From the main screen, press to enter Main Menu
2. Select Boost Ti er by pressing until the option is
highlighted, then press
3. Select the heater you wish to program the boost times for (e.g.
Heater 1) and press
4. The BOOST TIMER screen is then shown.
5. The boost can now be edited: Use or buttons to
highlight the time slot you wish to change. The screen below
shows the start hour being edited:
6. Alter the start hour with the or buttons and then press
to move to minutes.
7. Edit the duration in the same way and then press again to edit the days of the week you want the boost to be
active for; each day of the week and by toggled on/off with or buttons, press to go to the next day.
Pressing on the last day (Sunday) will confirm the boost time slot and whole line will be highlighted again.
8. Press to exit the BOOST TIMER screen.
Economy Tariff Boosting
Boosting only when economy rate electricity is available can be achieved in one of three ways:
1. By setting the boost timer to coincide with the economy tariff times. This option should be used only if the
electricity meter is a dual rate meter (modern meters usually are).
2. Boost only at set times if economy rate electric is available.
3. Automatically boost whenever the economy tariff rate electricity is available, regardless of boost times.
Options 2 and 3 are available only when using the eSense input on the
Relay & Sensor Board.
For option 1, the eSense Input in the Relay & Sensors menu
option should be set to the appropriate Boost Enable setting.
With the Boost Enable function set, the BOOST TIMER screen will
include an extra column (see screenshot). The e can be toggled on/off, if
e is present, the boost will activate only when the boost times are valid
and the economy rate tariff is available.
Alternatively the eSense input can be used to active the boost whenever the economy tariff rate electricity is available,
regardless of boost times (option 2). To do this, the eSense Input in the Relays & Sensors menu should be set to
Boost 1, Boost 2 or Boost 1&2. When using this option, the Boost Timer is not needed.
12 eddi operation and installation manual

Operation
Boost Time Conflicts
Both heaters cannot be active at the same time and so if the boost times are conflicting, the higher priority heater will take
precedence. (See Priority on page 19).
If one or more boost times conflict for one heater, the boost will follow the latest time or longest duration.
Cancelling Boost
The boost can be cancelled at by pressing twice during a boost.
operation and installation manual eddi 13

Menus
Menus
Main Menu
Main Menu Options
Description
Savings… Today: Energy savings in kWhs over the relevant period. Only
surplus diverted energy is included.
ALL = Total kWhs of surplus energy diverted to the
heaters since installation
Yesterday:
This Week:
This Month:
This Year:
ALL:
Readings… READINGS
1 3
Status: Current status of the unit
Exporting:
Importing:
Power being imported or exported, from or to the
grid respectively
Output [1]: Power level in Watts currently being supplied to the
heater output and the active heater number
Output (PWM): Pulse Width Modulation % this equates to the
output voltage; 100% = output voltage is same as
supply voltage
Output Current: AC current going to the heater
Heatsink Temp: Temperature of the integral heat sink
READINGS
2 3
Voltage: Supply voltage to the unit
Voltage Max: Maximum supply voltage since switch on
Voltage Min: Minimum supply voltage since switch on
Frequency: Grid frequency
Exporting:
Importing:
Power being imported or exported, from or to the
grid respectively
Grid Current: AC current at grid connection point, including reactive
currents
READINGS
3 3
Exporting:
Importing:
Power being imported or exported, from or to the
grid respectively
Generation: Power from the generator (if available)
Consumption: Power consumed by the house (if available)
Diverting: Total diverted power (inc. all devices)
Output [1]: Current power to the respective heater
Information… INFORMATION
1 2
Status: Status of the unit
Serial No: Serial number of the unit
Firmware: Firmware version installed in the unit
Cal Date: Factory calibration date
Power Fail: Time and date of last supply failure
INFORMATION
2 2
Grid Sensor: Grid current sensor source
Signal Quality: RF signal reception quality
Last Fault: Last recorded fault code
Fault Date: Date and time of last recorded fault code
INFORMATION
3 3
Network ID: Network information for this device when linked to
other devices using RF network
(Only shows if connected to other devices)
Device Address:
Master Address:
Channel:
EUI:
14 eddi operation and installation manual

Menus
Main Menu Options
Description
Linked Devices Info… Status information from all linked devices
See inking Devices page 21 for details
Boost Timer… Heater 1… Programmable boost times for heaters
Heater 2…
Relay 1… Programmable boost times for relays
These options are available only if the optional Relay
& Sensor Board is installed
Relay 2…
Settings… Time & Date… Time: Set current time in 24 hour format
Date: Set date in Format (see below)
Format: Sets the date format
Auto DST: Automatic Daylight Saving Time adjustment
DST Zone: Set zone for Daylight Saving Time
Display… Language… Set language for the main screen and menus
Icons… Heater 1: Heater icon be be selected from several heater types
Heater 2:
Generation: Generation icon can be sun or wind
Backlight… Set the duration the display backlight remains on
after a button press
Contrast… Set the display contrast
Priority… Heater 1 Sets which heater will be heated as a priority, the
other heater will be heated only when the priority
heater has reached maximum temperature
Heater 2
Check Period: When heating the lower priority heater, this is how
often the priority heater is checked to see if it can
store any more heat
Advanced… Advanced menu and settings (passcode protected)
Default passcode: 0 0 0 0
Advanced Menu
Advanced Menu Options
Description
Supply Grid… Phase: Set the supply phase to use for this device – see
Advanced Settings page 20 for more information
Exp Threshold: Level of export which must be seen before the eddi
will start diverting power to the heater – see
Advanced Settings page 20 for more information
Response Delay: Time before the eddi starts diverting after Export
Threshold is exceeded – see Advanced Settings page
20 for more information
Export Margin: Minimum level of export power which is maintained
when eddi is diverting surplus power – see Advanced
Settings page 20 for more information
Grid Limit: Maximum grid import power limit. Output to heater is
reduced to keep import below this level. This also
applies when boosting – see Advanced Settings page
20 for more information
Linked Devices… Devices… Other myenergi devices can be wirelessly linked to
eddi, this shows connected devices and their
priorities. Settings for some devices are made here
See inking Devices (page 21)
Pairing Mode… Puts this eddi in pairing mode so it can be linked to
another device See inking Devices (page 21)
Add Device… Add a myenergi device to the 'network'. See See
inking Devices (page 21)
operation and installation manual eddi 15

Menus
Advanced Menu Options
Description
Channel… RF Channel: Sets the radio frequency channel number used when
linking other devices See inking Devices (page 21)
Reset Settings… Clear all linked device settings. See inking Devices
(page 21)
CT Inputs… CT 1: Set the function of CT1 input
Note: This must be set to 'Disabled' if the Grid Sensor
is connected to Harvi
CT 2: Set the function of CT2 input
Test… Heater 1… Test Heater 1 is connected and working
Heater 2… Test Heater 2 is connected and working
Grid Sensor (CT1)… Test Grid Sensor for installation errors
Generation Sensor (CT2)… Test signal from Generation Sensor
Passcode… The code required to access the Advanced menu
Restore
Settings…
Restore Yesterday Restore the configuration from the previous day
Clear Data Clear all savings data from memory
Factory Reset Restore configuration to factory defaults (savings data
are unaffected unless Clear Data is also selected)
Confirm Confirm restore options and re boot device
Relay & Sensor Menu
Relay & Sensor Board Menu (if installed)
Description
Relays &
Sensors…
Temperatures… Set Limit: The target temperature for when using a PT1000
temperature probe connected to PT1/PT2
PT1 corresponds to Heater 1, PT2 is for Heater 2
Hysteresis: Sets the temperature drop required from Set Limit,
before heating resumes
Readings: Current temperature readings of the probes
Relay 1… Disabled Disable Relay 1 control (relay is always off)
Export… On Threshold: When export power exceeds this threshold, the relay
will operate
Off Threshold: When the export power is under this threshold the
relay is switched off
Inc Diverted: Surplus power currently being diverted to the heater
will be included as export for the thresholds above
Min On Time: When the On Threshold is exceeded and the Relay
switches on, it will remain on for at least this time
after the export drops below the Off Threshold
Min Off Time: When the export power exceeds the On Threshold
the relay will operate only if it has been off for this
amount of time
Import… On Threshold: When import power exceeds this threshold, Relay 1
on the Relay & Sensor Board will operate
Off Threshold: When the import power is under this threshold the
relay is switched off
Min On Time: When the On Threshold is exceeded and the Relay
switches on, it will remain on for at least this time
after the import drops below the Off Threshold
Min Off Time: When the import power exceeds the On Threshold
the relay will operate only if it has been off for this
amount of time
Heating… Heating 1 Operates Relay 1 when Heater 1 output is live
Heating 2 Operates Relay 1 when Heater 2 output is live
16 eddi operation and installation manual

Menus
Relay & Sensor Board Menu (if installed)
Description
Heating 1&2: Operates the relay when either Heater 1 or Heater 2
output is live
Destrat 1 De stratification pump control for Heater 1; the Relay
2 operates when eddi is trying to heat Heater 1 and
the heater is at maximum temperature.
After Check Period the relay will deactivate
Destrat 2 De stratification pump control for Heater 2; the Relay
2 operates when eddi is trying to heat Heater 2 and
the heater is at maximum temperature.
After Check Period the relay will deactivate
Boost Timer Relay 1 will operate as a programmable timed relay.
There will be an extra Boost Timer option in the Boost
Timer menu
Fault Signal Will de activate the relay if a fault occurs
Relay 2… Disabled Disable Relay 2 control (relay is always off)
Export… On Threshold: When export power exceeds this threshold, the relay
will operate
Off Threshold: When the export power is under this threshold the
relay is switched off
Inc Diverted: Surplus power currently being diverted to the heater
will be included as export for the thresholds above
Min On Time: When the On Threshold is exceeded and the Relay
switches on, it will remain on for at least this time
after the export drops below the Off Threshold
Min Off Time: When the export power exceeds the On Threshold
the relay will operate only if it has been off for this
amount of time
Import… On Threshold: When import power exceeds this threshold, Relay 2
will operate
Off Threshold: When the import power is under this threshold the
relay is switched off
Min On Time: When the On Threshold is exceeded and the Relay
switches on, it will remain on for at least this time
after the import drops below the Off Threshold
Min Off Time: When the import power exceeds the On Threshold
the relay will operate only if it has been off for this
amount of time
Heating… Heating 1 Activates the Relay 2 when Heater 1 output is live
Heating 2 Activates Relay 2 when Heater 2 output is live
Heating 1&2 Operates Relay 2 when either Heater 1 or Heater 2
output is live
Destrat 1 De stratification pump control for Heater 1; the Relay
2 operates when eddi is trying to heat Heater 1 and
the heater is at maximum temperature.
After 5 mins the relay will deactivate
Destrat 2 De stratification pump control for Heater 2; the Relay
2 operates when eddi is trying to heat Heater 2 and
the heater is at maximum temperature.
After 5 mins the relay will deactivate
Boost Timer Relay 2 will operate as a programmable timed relay.
There will be an extra Boost Timer option in the Boost
Timer menu
Follow Relay 1 Relay 2 will always be the same state as Relay 1
eSense Input… Disabled The eSense Input is disabled
Boost… Boost 1 If a voltage is present on the eSense Input, Heater 1
will be boosted. The boost will end when there is no
operation and installation manual eddi 17

Menus
Relay & Sensor Board Menu (if installed)
Description
longer a voltage present
Boost 2 If a voltage is present on the eSense Input, Heater 2
will be boosted. The boost will end when there is no
longer a voltage present
Boost 1&2 If a voltage is present on the eSense Input, the
highest priority heater will be boosted. If the eSense
Input still has a voltage present after the heater
reaches maximum temperature, the other heater will
be boosted. The boost will end when there is no
longer a voltage present on eSense Input
Heater Enable… Heater 1 The eSense input will act as an thermostat for Heater
1; the heater will only be able to be heated when
eSense has a voltage present
Heater 2 The eSense input will act as an thermostat for Heater
2; the heater will only be able to be heated when
eSense has a voltage present
Heater 1&2 The eSense input will act as an thermostat for both
Heater 1 and Heater 2; the heaters will only be able to
be heated when eSense has a voltage present
Boost Enable… Boost Enable 1 The eSense input will act as an enable for the Boost
Timer for Heater 1. The Boost Timer has an additional
parameter 'e', when this option is set
See Boost Timer page 12
Boost Enable 2 The eSense input will act as an enable for the Boost
Timer for Heater 2. The Boost Timer has an additional
parameter 'e', when this option is set
See Boost Timer section for more details
Boost Enable
1&2
The eSense input will act as an enable for the Boost
Timer for Heater 1 and 2. The Boost Timer has an
additional parameter 'e', when this option is set
See Boost Timer page 12
18 eddi operation and installation manual

Configuration
Configuration
Settings
All settings are described in the Main Menu section, however, the more commonly altered settings are described in more
detail below.
Time & Date
The date and time are used for the Boost Timer and the savings calculations and therefore should be set correctly.
In the event of a power cut, eddi will still keep track of the time and date for a few days, so when power is restored the
clock will not need to be reset.
Time is always in 24 hour format but the date format can be changed.
eddi will automatically adjust the clock for Daylight Savings Time (DST) as long as Auto DST is enabled and the correct
time zone is selected.
Priority
The priority for heater outputs can be set to Heater 1 or Heater 2. The priority heater will be heated first with the
surplus power and only when fully heated will eddi start to divert power to the lower priority heater.
eddi will switch back to the priority heater if it has cooled and the thermostat for the heater is closed.
When heating the lower priority heater, the Check Period sets how often the priority heater is checked to see if it can
store any more heat.
If the Relay & Sensor Board is installed and temperature probes are used, eddi will immediately switch back to the priority
heater if the temperature drops by more than the set Hysteresis. The Hysteresis can be set in the Te peratures
menu of the Relays & Sensors menu option.
Icons
The heater icons shown on the main screen can be individually set for both heater outputs. This gives an installation
specific, graphical representation which heater is active. For example; Heater 1 could be a hot water cylinder and Heater 2
could be a radiator.
As well as being able to customise the heater icons, it's also possible to change the generation type from solar to wind.
operation and installation manual eddi 19

Configuration
Advanced Settings
Supply Grid - Phase
The Phase setting is only used on 3 phase systems.
It should be set to match the phase number that the eddi is wired to so that the power measurements are correct and that
the eddi responds to the correct phase when using the harvi wireless sensor.
An alternative setting is ALL, this tells the eddi consider export power as available surplus irrespective of which phase the
export power is actually on. This setting should be used only if you are sure the electricity meter is measuring the combined
net power across the three phases.
Supply Grid – E p Threshold
This is the amount of export that must be exceeded before eddi starts diverting power to the heater loads. Once diverting
starts all the surplus power, less the Export Margin (see below) will be diverted to the heater load.
Supply Grid – Response Delay
This setting gives a delay before eddi starts to divert power (after the Export Threshold is exceeded).
The default setting is 0s (zero seconds), however, if there is an AC side battery storage system installed at the property, this
may need to be increased. For example, the storage system will be trying to charge the batteries with the surplus power,
but because eddi is very fast, the surplus power would have already been taken up by eddi. This may be undesirable as it
would usually make more economic sense to store the energy in the batteries as priority. By introducing a small Response
Delay (say 5 seconds), the battery system is given chance to respond before eddi does.
Supply Grid – E port Margin
This sets a minimum level of export power which is maintained when eddi is diverting surplus power to the heaters.
Normally Export Margin would be set to 0W (zero Watts) and all of the available surplus will be diverted to the heaters,
however, it is sometimes desired to have a minimum export level at all times.
Supply Grid – Grid Limit
Ordinarily the Grid Limit would be set to OFF, in some cases however, limiting of the grid import level can be an advantage.
For example a property may have a grid supply limit of 12kW and several appliances are on and the property is consuming
10kW by other appliances and the user wants to boost the water heating. If the water heater is rated at 3kW, the total
consumption would exceed the allowed import. However, with a Grid Li it setting of 12kW, eddi would limit the
power to the heater to 2kW and the maximum allowed import power will not be exceeded.
CT Inputs
The CT1 and CT2 inputs are configured depending on the connected sensors.
CT1 Description
Disabled CT1 is not connected
this settings is used if the Grid Sensor is wired to a harvi device or if the eddi is acting a a slave
unit
Grid CT1 input is wired to the Grid Sensor
CT2 Description
Disabled CT2 is not connected
Generation CT2 input is wired to a Generation Sensor
Battery CT2 is monitoring a battery storage system
Load CT2 is monitoring a load
20 eddi operation and installation manual