Mixergy V06 User manual

User Guide
V06

Contents
How it works 3
Mixergy interfaces 4
Heating with renewables 4
Controlling your system 5
Voice control 6
How to achieve the most from your tank 7
Mixergy app guide 9
FAQs and troubleshooting 19
Mixergy warranty statement 22
2

How it works (electric and gas)
Mixergy electric and gas powered tanks use novel top-up technology to ‘oat’
hot water on top of cold. This means you can selectively ‘heat what you need’,
rather than the whole tank. A sensor within the tank ensures you’ll always know
how much hot water is available. Top-up reduces heat losses and improves
reheat speed from cold (5x for electric, 2x for gas). This helps save money, time
and energy.
How it works (heat pumps)
Mixergy heat pump tanks heat using an external heat exchanger and
circulating pump to heat the full contents of the tank from the bottom up
evenly via convection. This has the benet of improving the eciency of the
heat pump (while heating hot water) by up to 8% and can increase the amount
of hot water stored by the tank by up to 20% in some cases.
Mixergy
tank
Conventional
tank
Mixergy heat
pump tank
Conventional
coil heat pump
tank
3

Mixergy interfaces
Mixergy tanks operate on an integrated Internet of Things (IoT) platform
i.e. they’re internet connected so that the tank, App, and Mixergy servers
can communicate with each other, meaning you can control your tank from
anywhere in the world.
Automatic software updates are regularly sent to ensure your tank is running
smoothly with the newest features and any remote diagnostics can be carried
out to check out any potential issues.
The Mixergy cloud oers the most sophisticated control over your tank.
However, you can still connect it to other smart home energy management
systems including Hive, Nest, Tado and more.
Heating with renewables
If you have an additional heat source,
such as solar thermal or PV, you can
heat water for free when the sun
shines.
By heating a smaller portion of the
tank, you are leaving more water
available to be heated by renewable
energy. This allows you to use more of
the energy you produce, and export
less!
Free
hot
water
4

Controlling your system
Your Mixergy tank comes equipped with a simple gauge to allow for easy and
fast control of your hot water:
Want more control?
For intelligent remote control over your
Mixergy tank, use the Mixergy App.
This can be downloaded from the App
Store, or Google Play.
Hold down to turn the
tank on or o
Blue indicates the amount
of cold water in the tank
Green indicates the amount
the tank is boosting to
Red indicates the amount
of hot water in the tank
Press to decrease boost in
10% increments
Press to boost the tank
in 10% increments
Connection established
(blue) Heating status (green
when heating)
5

Voice control
Your Mixergy tank can be controlled with voice control via Google Assistant or
Amazon Alexa.
You can use commands to set your hot water temperature, check how much
hot water you currently have or give the tank a boost. Plus many more!
A full list of commands are shown below, and we are working to add more
commands to this list.
Google assistant commands
Amazon alexa commands
Your request Alexa’s response
Alexa, boost Mixergy tank charge to XX% (e.g. 50%) OK
Alexa, increase Mixergy tank charge by XX% (e.g. 20%) OK
Alexa, what is the hot water level in the Mixergy tank? You have XX%
Alexa, what is the hot water level in my <device name> You have XX%
Alexa, what is the amount of hot water in my <device name> You have XX%
Alexa, what is the charge in Mixergy tank? Mixergy tank charge is XX%
Alexa, what is the charge in my <device name> <device name> charge is XX%
Alexa, what is the state of charge in my <device name> <device name> charge is XX%
Alexa, is Mixergy tank boost on? Mixergy tank boost is ON/OFF
Alexa, turn o Mixergy boost OK
Alexa, set Mixergy tank temperature to XX˚C (e.g. 58˚C) OK
Alexa, what is the temperature in Mixergy tank? Mixergy tank temperature is XX˚C
Your request Google’s response Notes
OK Google, turn on <device
name> heating
Sure, turning on heating on
<device name>
Heats tank to 20% above
current charge
K Google, turn o heating in
<device name>
Alright, turning o heating on
<device name>
Turns o the immersion (if
it’s on)
OK Google, ll <device name>
<amount>
OK, lling to <amount>
OK Google, ll <device name>
to X%
Got it, lling to X%
OK Google, how full is <device
name>?
<device name> is lled to X%
OK Google, is <device name>
<heating> on
<device name> heating is on/o
OK Google, what is the
temperature in <device name>
<device name> is set to X degrees X is the target temperature, not
the actual water temperature
OK Google, set <device name> to
X degrees
Sure, setting <device name> to
X degrees
Sets the target water
temperature
6

Fuel type Best time to heat How much to heat
Flexible taris with
price volatility (e.g.
Octopus Agile,
Economy 7 or
Economy 10)
You’ll want all of your
heating schedules to
run when electricity is
cheapest, during the set
o peak hours.
If possible, you’ll want
to heat enough water
to cover your expected
usage for the entire day
in one heating event.
Flat taris with no
price variability
(e.g. electric at
rate, indirect
sources such as gas
boiler)
The time you heat won’t
aect how much you
pay for the energy. To
minimize heat losses, we
suggest setting your tank
to heat to the required
amount just before the
rst expected draw
event.
Set your tank to heat
enough water at the
times you need it.
Be sure to put your
tank in “indirect mode”
through the App to
ensure gas is used if it
is cheaper than your
electricity tari!
How to achieve the most from your tank
Mixergy terminology key
• Hot water level: the % of usable hot water available, or state of charge.
• Draw event: any amount of hot water discharged from the tank.
• Heating event: a scheduled heating instruction set in the Mixergy App (e.g.
heat to 50% at 7am on Monday).
• Maintain levels: You can set your tank to maintain a state of charge between
a minimum and maximum level. If the level of hot water drops below the
minimum level, your tank will automatically heat until the maximum level is
reached. We recommend a level of 15% (min) to 20% (max) (electric/gas)to
cover any small draw event (e.g. washing dishes). For heat pump cylinders it
is recommended to set the max. to 100%.
7

Automatic schedule control
It can be tricky to know exactly how much hot water you’ll require on a
daily basis, and that’s why we’ve produced an intelligent machine learning
algorithm, which will select the best possible heating schedule for you. This
algorithm will optimise your energy use, so you’re always saving as much
money on hot water bills as you can. It’s a win-win situation for you, and our
planet!
Automatic control can be set to one of two modes:
1. Standard: your tank will heat conservatively, aiming to save some
money whilst minimising the chance that you’ll run out of hot water.
2. Economy: your tank will heat to maximise savings. This comes
with an increased risk that you may run out of hot water if your
household uses more than estimated.
Before the machine learning kicks in, your actual hot water usage will be
monitored over a short period. You should either set a manual schedule
yourself to begin with, or your tank will run a default schedule – heating to
100% at 3am.
* Friendly disclaimer – scheduling is trying to predict water usage
happening in the future. Therefore no manual or automated schedule
will ever perfectly predict the exact amount of hot water you’ll actually
need, though we hope our suggestions and automatic heating control
setting will do a pretty good job!
8

Mixergy app guide
9

Downloading the mixergy app
Download the Mixergy App by searching for Mixergy on the App Store or
Google Play.
Creating your account
Upon opening the App, you will be presented with a Login screen. Click Create
Account and then set your credentials.
After entering all the required details, you will receive an email from
[e-mail]. Click through this link to validate your account,
and then go back to the Mixergy App to login with your set credentials.
Mixergy’s terms and conditions are available during sign up and are also
available at mixergy.co.uk/terms-of-use. Our privacy notice is available
at mixergy.co.uk/privacy.
10

Registering your tank to your account
After logging in for the rst time, you will be asked to register your tank to your
account.
On your tank, there will be a label containing a mixdevice code which is a
25-character identier unique to your tank (please note: this is not the MX
number shown on the same label!).
Enter this code into the App. Alternatively, scan the QR Code (only available in
iOS) on the label on your tank to save typing in this code.
On this screen, you may choose whether you’d like to manually schedule your
tank (you choose when it heats, and how much), or you can select the option
for Automatic Schedule Control (our machine learning algorithm will optimise
your schedule to save on energy and money).
• If set to O, your schedule will not
be adjusted (i.e. you must manually
schedule your tank).
• If set to Standard, your tank will be
conservative in its scheduling, aiming
to save some money whilst minimising
the chance that you’ll run out of hot
water.
• If set to Economy, your tank will
optimise its schedule to maximise
savings. This comes with an increased
risk that you may run out of hot water
if your household uses more than
estimated.
11

View your hot water level
The home screen shows the current heating status of your tank, and how much
water is available.
The Hot Water Level is the percentage
of the water in the tank that is usable
hot water.
In this example, 20% of the water
in the tank is usable hot water (the
red portion of the graph) and the
remaining 80% is considered cold (the
blue portion of the graph).
The Heating Status tells you if the
tank is currently heating or not.
If it is heating, it will state where
the instruction has come from. For
example, whether it’s in response to a
boost (from the internet or gauge), or
due to a user dened heating schedule,
demand side response, or a water
sterilisation cycle.
Underneath the Heating Status it will
say what time the water measurements
were last received by Mixergy servers.
This information can be useful when
diagnosing internet connection issues
in the home.
Boosting your tank
To boost your tank to heat more water, drag the slider on the right up with
your nger to the desired level and let go. The green portion of the graph
represents the level your tank is heating to, and the heating status below will
change. As the tank heats up, the red portion will climb until the target hot
water level is reached.
To cancel a boost made from the App, click Cancel Boost.
12

Setting a manual heating schedule
Click on the Schedule tab at the bottom of the page and press the +button to
set when and how much you want your tank to heat. Click Save to view your
new schedule.
You can set a dierent schedule for each day, or copy the same schedule over
to several days. You can also set the tank to maintain between a minimum
and maximum level – this means that if the hot water level falls below the
minimum hot water level, the tank will automatically turn back on again until
the maximum level is reached. If no maintain parameter is set, the usable hot
water will naturally cool o, unless it is rst used by a draw event.
For example, a schedule can be set every week day to heat in the morning at
06:00 up to 80%, and then again at 18:00 to 40%. The initial heat to 80% in
the morning should provide enough water to cover all morning showers, with
a second boost in the evening in anticipation for another shower or bath for
example.
On the weekends, it could be that everyone is expected to be in the house all
day and likely to be using hot water at dierent times. Therefore a schedule
can be set to heat at 08:00 to 70%, and then a maintain parameter is set to
ensure between 15-25% usable hot water is always available throughout the
rest of the day.
13

Vacation mode
Vacation mode will stop your tank heating when you are away, and any
schedule currently set will be ignored until your return day.
To enter vacation dates, click the aeroplane icon on the tool bar.
If you do not set a schedule yourself, your tank will automatically run on a
‘default schedule’ until you do. This setting will heat your tank to 100% every
day at 3am. This may be useful to begin with if you are unsure of how much hot
water your household requires, but please note that this may not be the most
ecient setting to optimise on energy/cost!
Please note, the minimum hot water level your tank can heat to will be approx.
~40% for indirect tanks and 20% for direct tanks (this will be slightly dierent
depending on tank size). After this initial heat, you will be able to heat in 1%
increments.
14

Click the Heat Sources tab to specify which heat sources you want to use to
heat your tank.
Set which Default Heat Source you’d like to use to heat your water This will be
used for all heating (boosting or scheduling), unless a Custom Heat Source
is selected to run for a certain time of day. For example, you may wish to use
electricity for heating during o-peak Economy 7 hours when electricity is
cheap, and by gas outside of these hours.
You can set a custom source by clicking Add Heat Source on the toolbar.
Select from Electric and Indirect (e.g. gas/oil/biomass). Please note: If
available, your tank will automatically utilise any surpluses of solar thermal or
PV, regardless of the heat sources selected in this tab.
Setting your heat source
15

Viewing hot water usage
Click the Measurements tab to view graphs visualising your hot water usage
and electricity consumption. You can see graphs of previous days by clicking
Pick Date underneath the graph.
You can see how these graphs are consistent with the set heating schedule and
reect water usage and natural cooling of the water throughout the day.
For example, in the hot water level graph you can see the hot water level rising
to 70% at 01:30, as per the schedule. Just after 18:00, the water level dropped
below 18%. As the tank’s schedule was set to maintain between 18% and 35%,
the tank automatically boosted itself to 35%. This worked out well for the user
as shortly afterwards there was a large draw event, and without this boost
there wouldn’t have been enough hot water available.
Swipe right to see the Power graph. This shows how much power was used by
the immersion heater (if heating by electric). In this example, there are three
spikes, one at 01:30, and another one after 18:00 and 20:00. This is what you’d
expected to see from looking at the heating schedule and hot water levels.
16

Calculation of energy usage and cost
The Mixergy App can calculate how much energy you’ve used to heat your
water, and provide an estimate of how much this has cost. Click the Energy
tab, and depending on which heat source you use, select either Electricity or
Indirect. Then click Set Tari.
If you are heating electrically, enter your peak/o-peak electricity prices for
an estimation.
More options
To log out, change your password, or add a new tank to your account, return to
the homepage Tank Info and click More.
If you are heating via an indirect
source, enter your tari price and the
capacity of your tank (in litres – this
is written on the label on the front of
your tank!). If you know the eciency
of your indirect heat source, enter
this here for the most accurate price
estimate. If you do not know the
eciency, a default rating of 80%
eciency will be set.
17

Click System Settings to change the target temperature of your hot water,
change your automatic schedule control setting.
If you are using a heat pump as a heat source, you can set your heat pump
temperature here.
18

FAQs and troubleshooting
1. The Mixergy App won’t let me register my tank, what should I do?
a. Before you will be able to register your tank with your Mixergy account,
the tank must rst be installed and connected to the internet. If you are
unable to establish internet connection, please see the answers to question
2 below.
b. Ensure you are entering the 25-character mixdevice number, and not the
MX number. This is printed on a white sticker on the side of your tank.
2. What should I do if my tank is not connecting to the internet?
A powerline adapter (included with your tank) should be plugged into
a mains socket and connected to your internet router via the included
ethernet cable. Check this set-up has been correctly followed by your
installer. If you still do not have internet connection, check each of the
following steps:
i. If you already have a homeplug AV network installed in your home, it is
recommended that you pair the tank with an existing homeplug adaptor to
avoid interference
ii. Ensure that the adapter is not plugged into an extension lead.
iii. If the bottom ethernet LED on the adapter [4] is not lit, the ethernet
cable may have come loose and will need to be plugged in again (you
should hear it click into place).
iv. If the middle powerline LED on the adapter [4] is not lit, then your tank
may have become unpaired from the powerline adapter connected to your
router.
19

1. You will need to press the pair buttons on both the adapter [3] (plugged
into the mains) and the tank (the pair button is within the Mixergy controller
box [1] found on the top of the tank – you will need to use a thin tool to press
the button inside [2]). Press both buttons for one second, within 2 minutes of
each other in order to re-establish pairing.
2. During the pairing process, the top power LED on the adapter [4] should
start blinking, if it doesn’t, press the pair buttons again.
3. The middle LED will be solid when the pairing is complete.
If the above steps do not work to re-establish internet, try to power the tank o
and on at the mains, not through the power button on the gauge.
3. What will happen to my heating schedule if the tank loses internet
connection?
a. Your tank will continue to heat according to the last schedule set when
there was internet connection.
i. However, if you power the tank o at the mains it will need to re-connect
to the internet in order to begin running the schedule again with the correct
time. If no internet connection is available, the tank will enter an ‘oine’
mode where it will constantly maintain between 40-50% charge using your
primary heat source.
b. You can continue to boost your tank via the gauge without an internet
connection.
3
1
2
4
Power
Powerline
Ethernet
Pair
20