immerSUN automatic power controller Operation manual

1ENGLISH
Installation & User Guide
V1.2

2
Contents
Introducing the immerSUN
Main Screen
Savings
Boost (Manua )
Boost (Timed)
Menu
View Readings
Advanced Settings
Externa Boost Input
Mu tifunction Re ay
Insta ation
System Overview
immerLINK™ ( inking units)
immerSUN at a g ance
E ectrica Connections
Sensor Insta ation
Setup
Wiring Diagrams
Wiring: Sing e Heater
Wiring: Two Heater
Wiring: Three Heater
Wiring: Underf oor Heating (opt. 1)
Wiring: Underf oor Heating (opt. 2)
Wiring: Dua Tariff (Sing e Meter)
Wiring: Dua Tariff (Dua Meter)
Error Messages
Technica Specification
3
4
5
6
7
8
10
12
13
14
16
18
19
20
22
23
24
25
26
28
30
32
34
36
38
40
42

3
Introducing the immerSUN
Thank you for choosing immerSUN - You have made an excellent choice!
The immerSUN is an automatic power contro er for heaters. It tracks avai ab e surp us
power from a grid-tied PV or Wind turbine system and varies the power to the heater to
match the surp us power, therefore ensuring a of the green energy is fu y uti ised.
trusine™ Power Control Technology
The immerSUN uses TruSine™ power contro techno ogy. This means that the vo tage is
very smooth y adjusted to a ter the power to the heater. The power going to the oad is a
non-distorted true sine wave, on y the vo tage is a tered.
This contro techno ogy is unique to the immerSUN and is more sophisticated than any
simi ar product on the market. TruSine™ techno ogy ensures troub e free operation with
a inverters and compatibi ity with a import/export energy monitors.
Feature Set
●
Tracks surp us power and diverts this energy to the oad
●
trusine™ techno ogy for fast and smooth automatic power adjustment
●
Works with many microgeneration systems inc uding PV, Wind and Hydro systems
●
C ear graphica back it LCD disp ay
●
Indicates current import/export power eve s as we as diverted power to the heater
●
Savings are accurate y reported for the day, month, year as we as the tota since
insta ation.
●
Savings can be disp ayed in severa currencies as we as kWhs
●
No need to change immersion heater
●
Works with many types of heater inc uding storage, pane and underf oor
●
One immerSUN can contro up to 3 heaters sequentia y
●
On y one current sensor for ease of insta ation with the option of a wire ess sensor
●
Bui t-in 7-day programmab e boost timer
●
Manua boost function for both heater outputs
●
Integra mu ti-function re ay to provide additiona functions such as: Economy-7
contro , cy inder de-stratification pump contro and export power thresho d detect
●
Up to 5 immerSUN's can be inked together for arger systems
●
Smart, sturdy meta enc osure designed with the insta er in-mind
●
Fu y short circuit protected in case of oad fau t
●
Over oad protection
●
Soft starting to avoid power surges
●
Smart meter compatib e
●
Compatib e with third-party energy monitors
●
Comp ete CE product approva s
●
Made in Britain with a 3-year product warranty

4

✓×

SAVINGS M NU
Savings Today
Savings shown a ternates between
kWh and financia savings in the set currency.
Current Heater
The symbo for the heater
being heated is shown a ong
with the heater number.
Heater Power
The amount of power
current y being sent to the
heater.
Grid Power
The power either, being
imported or exported.
Import or export is shown by
the direction of the arrow
between the Grid and House
symbo s.
Date & Time
The current date, day of week
and time.
Main Screen
The main screen shows the status of the immerSUN, the imported or exported power, the
date and time and the savings made today.
The house in the centre of the screen wi be 'happy' if no power is being imported,
otherwise a straight face wi be disp ayed. Arrows either side of the house show the
direction of power.
From this screen the Menu can be accessed, a manua oost can be triggered and there is
a short-cut to the Savings data.
p8p5
BOOST
p6

5
Savings

✓×

SAVINGS
Savings that have been made by immerSUN are stored in permanent memory. The
savings can be shown for Today, this Week, this Month and this Year as we as the Tota
since the immerSUN has been insta ed. The savings can be disp ayed as a ist or in a
graph.
The savings are shown in kWh as we as financia y in the chosen currency. For the
financia savings to be correct, the user must keep the tariff up to date. The Set Tariff
option in the Main Menu a ows the user to set the current tariff, this shou d be set to
ref ect the kWh cost for the fossi fue norma y used to heat the heater.

6
Boost (Manual)
A heater can be 'boosted' to fu power for a short period regard ess of the amount of
avai ab e export power, this function is ca ed Manual oost and is activated from the
main screen. Once the boost starts, the remaining boost period wi be disp ayed, this wi
start at 1 hour but can be adjusted during the boost. A manua boost can be cance ed at
any time.

7
Boost (Timed)
Important points
●
Up to six different boost times can be entered.
●
Each week day can be individua y se ected for each boost time.
●
On y ONE heater can be boosted at any one time.
●
If any boost times over ap, the atest timed boost wi take presidence.
●
For boost times crossing midnight, two time s ots wi need to be used.
The immerSUN can be programmed to 'boost' the heating for each heater at certain
times. Boost means that the heater wi be at fu power regard ess of the amount of
avai ab e export power. This means that power may be drawn from the mains grid supp y
during boost times.
The oost Times can be accessed from the Main Menu.
Once in the OOST TIMES screen, use the  and  buttons to se ect the boost time you
wish to change, then press. You can now edit the boost times, use the  and 
buttons to change the start time, end time, days of the week and heater number for the
boost, (press the button to move to next section). Press the button to exit edit
mode.
BOOST TIMES
06:30-07:30 MTWTFSS -
16:30-17:30 MTWTFSS -
07:30-08:30 MTWTFSS -
17:30-18:30 MTWTFSS -
08:30-09:30 MTWTFSS -
18:30-19:30 MTWTFSS -
BOOST TIMES
06:30-07:30 MTWTFSS -
16:30-17:30 MTWTFSS -
07:30-08:30 MTWTFSS -
17:30-18:30 MTWTFSS -
08:30-09:30 MTWTFSS -
18:30-19:30 MTWTFSS -
START
times
END
times
DAY of
week
HEATER
number or type
MAIN MENU
Boost Times
MAIN MENU
Boost Times
Special heater types
There two special heater types; T and . These will
only be available if the Multi Function Relay is set to Export Threshold or oiler oost and
wired correctly.
T : Export Threshold boost, the appliance will be activated for the boost period.
B : oiler boost, the boiler will be activated for the boost period.

8
Holiday Mode
The immerSUN can be set to
Holiday Mode, when you are
away from home. This wi stop
the immerSUN from heating. The
timed boost wi a so not operate.
Set Date & Time
The date time shou d be set
during insta ation. Use this menu
option to change the current date
or time.
The date & time wi be retained
during a power outage for at east
2 days.
Set Backlight
The disp ay back ight can be set to
i uminate for a few seconds after
a button press.
A so the back ight can be set to
i uminate whenever the unit is
heating and/or boosting.
Set Contrast
The disp ay contrast can be
adjusted if required.
Savings
Savings made by the immerSUN
are accumu ated. The savings are
shown in kWh as we as in
currency. The savings are
disp ayed for Today, this Week,
Month and the tota this year. A so
the tota savings since insta ation
are shown.
Boost Times
Boost times can be set to turn on
the se ected heater at fu power
regard ess of surp us export
power avai ab e.
Menu
MAIN MENU
Savin s
Boost Times
Holiday Mode
Set Date & Time
Set Display
MAIN MENU
Savin s
Boost Times
Holiday Mode
Set Date & Time
Set Display
SAVINGS
Today: 2.5kWh £0.36
Week : 16kWh £2.30
Month: 74kWh £10.15
Year : 315kWh £45.09
Total: 315kWh £45.09
SAVINGS
Today: 2.5kWh £0.36
Week : 16kWh £2.30
Month: 74kWh £10.15
Year : 315kWh £45.09
Total: 315kWh £45.09
BOOST TIMES
06:30-07:30 MTWTFSS -
16:30-17:30 MTWTFSS -
07:30-08:30 MTWTFSS -
17:30-18:30 MTWTFSS -
08:30-09:30 MTWTFSS -
18:30-19:30 MTWTFSS -
BOOST TIMES
06:30-07:30 MTWTFSS -
16:30-17:30 MTWTFSS -
07:30-08:30 MTWTFSS -
17:30-18:30 MTWTFSS -
08:30-09:30 MTWTFSS -
18:30-19:30 MTWTFSS -
HOLIDAY MODE
Press  to put
unit in standby
Press  to cancel.
HOLIDAY MODE
Press  to put
unit in standby
Press  to cancel.
SET DATE & TIME
Date: 16.02.14
Time: 11:34
Press then use
to make chan es.
SET DATE & TIME
Date: 16.02.14
Time: 11:34
Press then use
to make chan es.
SET DISPLAY
Set Backli ht
Set Contrast
SET DISPLAY
Set Backli ht
Set Contrast
SET BACKLIGHT
Button Press : 30s
When Heatin : ON
When Boostin : ON
Press then use
to make chan es.
SET BACKLIGHT
Button Press : 30s
When Heatin : ON
When Boostin : ON
Press then use
to make chan es.
SET CONTRAST
Contrast: 50%
Press then use
to make chan es.
SET CONTRAST
Contrast: 50%
Press then use
to make chan es.
p7
p5
The Menu is accessed by
pressing the button
from the main screen.
Use the  and 
buttons to se ect the
required menu item,
then press the button
to se ect the menu
option.
Press the button to
exit or go back from a
menu.

9
Set Tariff
Priority:1-2
View Readin s
View Confi uration
Advanced Settin s
Lock Advanced 
Set Tariff
Priority:1-2
View Readin s
View Confi uration
Advanced Settin s
Lock Advanced 
Set Tariff
The tariff shou d be set to that
shown on your uti ity bi . You wi
need to adjust the tariff from time
to time as the tariff changes. The
tariff shou d be that of the fossi
fue you norma y use to heat the
app iance.
The New tariff wi take effect
From the date entered, which can
be a past or future date, meaning
the New tariff does not need to
be set on the day it changes.
Set Heater Priority
If two or three heaters are
connected, the heating sequence
can be se ected.
The higher priority heater wi be
heated unti the thermostat
opens, then the next priority
heater wi start to be heated and
so on. When heating a ower
priority heater, the unit wi switch
back to the higher priority heater
periodica y, this period is set by
Check Period in the Advanced
Settings menu.
If the heating priority is set to
Equal, then each heater wi be
heated in-turn for the time set by
the Check Period in the Advanced
Settings menu.
View Configuration
This screen gives an overview of
the immerSUN configuration
It is usefu to check the current
settings.
SET TARIFF
Current : £000.145
New : £000.145
From : 01/01/14
Press then use
to make chan es.
SET TARIFF
Current : £000.145
New : £000.145
From : 01/01/14
Press then use
to make chan es.
VIEW READINGS
VIEW READINGS
ADVANCED SETTINGS
ADVANCED SETTINGS
p12
SET HEATER PRIORITY
Priority: 1-2-3
Press then use
to make chan es.
SET HEATER PRIORITY
Priority: 1-2-3
Press then use
to make chan es.
p1
VIEW CONFIGURATION
HEATER 1 TYPE
Immersion (Top)
HEATER 2 TYPE
Immersion (Bot)
HEATER 3 TYPE
Disabled
MINIMUM EXPORT: 50W
HEATER PRIORITY
1-2
RELAY FUNCTION
When Heatin
1,2
Include Boost
EXTERNAL BOOST
Boost Heater
1,2
SESNOR TYPE
Wired
IMMERLINK
Unit: Master
Slaves : 0
Channel : 1 off
Net ID : f428
Gateway PW : 3b5b4436
VIEW CONFIGURATION
HEATER 1 TYPE
Immersion (Top)
HEATER 2 TYPE
Immersion (Bot)
HEATER 3 TYPE
Disabled
MINIMUM EXPORT: 50W
HEATER PRIORITY
1-2
RELAY FUNCTION
When Heatin
1,2
Include Boost
EXTERNAL BOOST
Boost Heater
1,2
SESNOR TYPE
Wired
IMMERLINK
Unit: Master
Slaves : 0
Channel : 1 off
Net ID : f428
Gateway PW : 3b5b4436
Lock Advanced 
Lock Advanced 
Lock Advanced
If ticked the Advanced
Settings menu is ocked,
the passcode wi need to
be entered to access the
menu.
If the Advanced Settings
menu is un ocked, the
menu can be immediate y
ocked by se ecting this
option.

10
MAIN MENU
View Readin s
MAIN MENU
View Readin s
View Readings
This screen shows various readings and other information. See the ist be ow for a
description of the readings.
This screen is usefu for diagnosing insta ation issues.
Title Description
Version: Firmware version number and hardware type.
Serial No: Seria number of the unit.
Input V: Supp y input AC vo tage.
Grid V: Vo tage of the supp y connected to the Wire ess Sensor
(where fitted), otherwise the same as Input V.
Max Voltage: Maximum supp y vo tage recorded since ast switch on.
Min Voltage: Minimum supp y vo tage recorded since ast switch on.
Grid I: Current seen by the sensor c amp.
Frequency: Supp y frequency.
xporting/
Importing: Power eve current y being imported or exported.
Current: Input current of the unit.
Output: Power being de ivered to the oad.
P.W.M: Output vo tage percentage.
Heatsink: Temperature of the interna heatsink.
Protects: Count of over-current protections since switch on
Sig Qual: Signa qua ity of immerLINK™ wire ess connection.
Cal Date: Date the unit was ca ibrated at the factory.
Reset: Date the unit was factory reset.
Power Off: Last date and time power was ost to to unit.
Last rror: Last error number with date and time.
VIEW READINGS
Version : 2.30.0/1
Serial No : 20546
Input V : 245V
Grid V : 0V
Max Volta e: 248V
Min Volta e: 232V
Grid I : -0.1A
Frequency : 50.0Hz
Exportin : 25W
Current : 8.9A
Output : 2108W
P.W.M. : 94%
Heatsink : 44°C
Protects : 0
Si Qual : 91%
Cal date : 20/10/2013
Reset : 16/02/2013
Power off : 20/10/2013
at : 16:36
Last Error : None
VIEW READINGS
Version : 2.30.0/1
Serial No : 20546
Input V : 245V
Grid V : 0V
Max Volta e: 248V
Min Volta e: 232V
Grid I : -0.1A
Frequency : 50.0Hz
Exportin : 25W
Current : 8.9A
Output : 2108W
P.W.M. : 94%
Heatsink : 44°C
Protects : 0
Si Qual : 91%
Cal date : 20/10/2013
Reset : 16/02/2013
Power off : 20/10/2013
at : 16:36
Last Error : None

11
Advanced options...

12
ADVANCED SETTINGS
Heater 1 Type
Heater 2 Type
Heater 3 Type
Minimum Export
Check Period
Relay Function
External Boost
Immerlink
Set Passcode
Locked Functions
Dayli ht Savin s Time
Factory Reset
ADVANCED SETTINGS
Heater 1 Type
Heater 2 Type
Heater 3 Type
Minimum Export
Check Period
Relay Function
External Boost
Immerlink
Set Passcode
Locked Functions
Dayli ht Savin s Time
Factory Reset
Heater Type
The heater type can be set for
each heater connected. Each
heater type is represented by a
different symbo on the main
screen.
Check Period
This is the time between
checking to see if the priority
heater(s) can accept more heat.
e.g. Once the heater is at max.
temperature, the unit wi
switch to the next priority
heater, however, it wi switch
back again after the set Period
to check if there is a demand for
heat from the higher priority
heater.
Advanced Settings
Advanced Settings Menu
Advanced Settings are
accessed via the Main
Menu – Advanced Settings
Option.
HEATER 1 TYPE
None
Immersion T
Immersion B
Heater
Underfloor
Pool
HEATER 1 TYPE
None
Immersion T
Immersion B
Heater
Underfloor
Pool
CHECK PERIOD
Period: 15 min
Press then use
to make chan es.
CHECK PERIOD
Period: 15 min
Press then use
to make chan es.
RELAY FUNCTION
RELAY FUNCTION
p14
EXTERNAL BOOST
EXTERNAL BOOST
p13
MAIN MENU
Advanced Settin s
MAIN MENU
Advanced Settin s
IMMERLINK
IMMERLINK
FACTORY RESET
Reset Confi
Reset Savin s
Reset Immerlink
Execute
Press  to cancel.
FACTORY RESET
Reset Confi
Reset Savin s
Reset Immerlink
Execute
Press  to cancel.
Factory Reset
To restore a settings to
factory defau ts, use this
function.
Reset Config and Reset
Savings can be individua y
se ected.
p19
MINIMUM EXPORT
Minimum Export: 50W
Press then use
to make chan es.
MINIMUM EXPORT
Minimum Export: 50W
Press then use
to make chan es.
Minimum xport
This is the minimum eve of
export power, the defau t is
50W to ensure that the
e ectricity meter does not
register any import when the
immerSUN is diverting energy.
SET PASSCODE
0 0 0 0
SET PASSCODE
0 0 0 0
Set Passcode
The passcode to access the
Advanced Settings menu can be
changed in this screen.
LOCKED FUNCTIONS
Set Date & Time
Boost Times
Manual Boost
Set Tariff
Set Priority
LOCKED FUNCTIONS
Set Date & Time
Boost Times
Manual Boost
Set Tariff
Set Priority
DAYLIGHT SAVINGS TIME
Enabled
Last Sunday
March & October
Press  to exit.
DAYLIGHT SAVINGS TIME
Enabled
Last Sunday
March & October
Press  to exit.
Locked Functions
Some functions can be hidden
from the main menu to prevent
accidenta changes.
Use this option to enab e or
disab e these functions.
Daylight Savings Time
Enab e or disab ed automatic
c ock adjustment for Day ight
Savings Time (DST).
When enab ed the c ock wi be
adjusted forward by one hour
March and back one hour in
October.

13
What Does It Do?
This is an external input which can be used to trigger a boost or enable/disable heater
outputs.
The External oost input is the 2-terminal connector labelled EX ST. Any AC voltage from
24V to 240V present on these terminals will be recognised by the immerSUN.
EXTERNAL BOOST
Disabled
 Boost Heater
Heater Thermostat
EXTERNAL BOOST
Disabled
 Boost Heater
Heater Thermostat
Boost Heater
The se ected heater(s) wi be
boosted whenever the EX ST
signa is present. If more than one
heater is se ected, the heaters wi
be boosted sequentia y in the
priority order.
Heater Thermostat
The EX ST input wi act as a
thermostat for the se ected
heater(s). The heater output wi
on y be active when there is a
signa at the EX ST input,
otherwise the heater wi show as
HOT on the main screen.
xternal Boost Input
X BST
xternal Boost Input
24 – 240VAC Sense Input
This input is isolated
EXTERNAL BOOST
HEATER THERMOSTAT
Heater 1
Heater 2
EXTERNAL BOOST
HEATER THERMOSTAT
Heater 1
Heater 2
ADVANCED SETTINGS
External Boost
ADVANCED SETTINGS
External Boost
MAIN MENU
Advanced Settin s
MAIN MENU
Advanced Settin s
Disabled
A vo tage at EX BST wi have no
effect, the input is disab ed.
EXTERNAL BOOST
BOOST HEATER
 Heater 1
Heater 2
EXTERNAL BOOST
BOOST HEATER
 Heater 1
Heater 2

14
ADVANCED SETTINGS
Relay Function
ADVANCED SETTINGS
Relay Function
MAIN MENU
Advanced Settin s
MAIN MENU
Advanced Settin s
RELAY FUNCTION
Disabled
Always On
When Heatin
When Boostin
Boiler Boost
Destrat Pump
RELAY FUNCTION
Disabled
Always On
When Heatin
When Boostin
Boiler Boost
Destrat Pump
RELAY:WHEN HEATING
Heater 1
Heater 2
Include Hot
Include Boost
RELAY:WHEN HEATING
Heater 1
Heater 2
Include Hot
Include Boost
RELAY:WHEN BOOSTING
Heater 1
Heater 2
RELAY:WHEN BOOSTING
Heater 1
Heater 2
RELAY:DESTRAT PUMP
Heater 1
Heater 2
RELAY:DESTRAT PUMP
Heater 1
Heater 2
When Heating
The re ay wi operate whenever
the se ected heater(s) are being
heated.
Include Hot If ticked the re ay
wi remain c osed when the
heater has reached max.
temperature and it's thermostat
is open.
Include oost If ticked the re ay
wi a so operate during timed or
manua boost.
When Boosting
The re ay wi operate whenever
the se ected heater(s) are being
boosted, either with manua
boost or timed boost.
Boiler Boost
The re ay wi operate whenever
a manua boost or timed boost
is activated for the se ected
heater(s).
The heater wi NOT be boosted
by the immerSUN but wi heat
as norma . Instead an auxi iary
boi er wi be ca ed to boost.
Destrat Pump
Once the heater thermostat
opens, the re ay wi operate (to
run a destratification pump).
The pump wi run for the
duration set by the Check Period
option in the Advanced Settings
menu.
Disabled
The re ay wi never operate..
Always On
The re ay wi be ON. This
function is usefu for testing
circuits connected to the re ay
contacts.
Multifunction Relay
Multifunction Relay
Settings
The settings for the
Mu tifunction Re ay can
be accessed via the
Advanced Settings
Menu. The re ay function
is se ected from a ist.
Some functions have
options which can be
defined.

15
Third Heater
When External Boost
Export Threshold
Fault Si nal
Third Heater
When External Boost
Export Threshold
Fault Si nal
RELAY:EXP. THRESHOLD
Threshold: 500W
ON Period: 15min
OFF Period: 0min
Priority: Hi h
RELAY:EXP. THRESHOLD
Threshold: 500W
ON Period: 15min
OFF Period: 0min
Priority: Hi h
Fault Signal
The re ay wi DEACTIVATE if
a fau t is detected. It wi
remain deactivated unti the
fau t is c eared or the
immerSUN is restarted.
When xternal Boost
The re ay wi activate whenever
there is an AC vo tage at the EX BST
input connector.
In this mode the re ay can a so be
contro ed with the Manual and
Timed oost options.
xport Threshold
The re ay wi activate when a set
export power Threshold is reached.
The re ay wi remain activated a set
minimum ON Period. After this
period the re ay wi deactivate,
un ess the export thresho d sti
exceeds the set eve . If the export
has fa en be ow the thresho d after
the ON Period, the re ay wi
immediate y deactivate and wi
remain so for the set OFF Period.
This function operates independent
to the heater outputs.
When the Priority is set to HIGH the
re ay wi activate when the surp us
power exceeds the thresho d
set. i.e. it wi inc ude the a ready
diverted power when waiting for
the thresho d to be exceeded.
With the priority set to LOW, re ay
wi activate when the exported
power is greater than the set
thresho d.
In this mode the re ay can a so be
contro ed with the Manual and
Timed oost options.
What Does It Do?
The Multifunction Relay is a relay that can be used for many different purposes. The
operation is controlled by the immerSUN and will operate when certain conditions are
met, these conditions can be user defined. The relay can be used to control pumps, send
signals to the boiler and switch on/off appliances etc.
Multifunction Relay Contacts
NO – Norma y Open
C – Common
NC – Norma y C osed
3
rd
Heater
The re ay is used to switch heater 2
output between two different
heater oads, therefore enab ing 3
heaters to be sequentia y
contro ed.
When this option is set Heater 3
wi be avai ab e on some menu
options. p3

16
Installation

Heat Pumps & Solar Thermal – Legionella Control
Heat pumps often need to use the immersion heater to get the hot
water to a high temperature for the purpose of Legione a contro .
This is an idea app ication for the External Boost input.
The immersion heater should ONLY be connected to the immerSUN, do
not connect the immersion heater to the heat pump or solar thermal
controller.
ON/OFF Control of Other Appliances
On y resistive oads (e.g. heaters) can be connected to the variab e
power Heater 1 and Heater 2 outputs. However, it is possib e to simp y
switch ON/OFF other types of devices by using the Threshold option of
the Multifunction Relay.
Cylinder Destratification
The effective capacity of a hot water cy inder with a top mounting
immersion can be increased by pumping the hot water to the bottom of
the cy inder, therefore a owing the immersion heater to heat the top
section of the cy inder again. The Multifunction Relay has a De-strat
Pump contro option for this purpose.
Check Pack
Contents
Select suitable
Location
Mount Unit
Install Sensor
Switch ON
Complete Setup
Change Settings
if required
Make lectrical
Connections
Select Wiring
Diagram
START
FINISH
p17
p17
p25
p22
p23
p24
p12

17
What's in the Pack
●
immerSUN
●
Sensor Clamp
●
Fixing Kit
●
Antenna
Locating the immerSUN
Often, the most suitab e ocation for the immerSUN is near to the distribution board as
a the connections required are usua y avai ab e here.
A ternative y the unit can be mounted next to the oad. Note that the Sensor c amp must
be c amped around the supp y meter-tai . There is the option of using the Wire ess
Sensor to simp ify the insta ation if required.
The fo owing shou d be considered when deciding upon the most suitab e ocation:
●
C ose to the main incoming mains e ectrica supp y of the property – otherwise
the Sensor C amp wi need to be extended, or the Wire ess Sensor option used.
●
Access to heater supp y cab e (this is usua y at the consumer unit)
●
Access to suitab e supp y via 16A MCB or 13A fused outlet
●
User access to the buttons and visibi ity of LCD screen
●
Adequate venti ation – keep vents c ear and provide airf ow around the unit.
Mimi mum clearance top and bottom is 50mm a though more is recommend for
ease of access to case screws.
●
Cab e access point – through the top, bottom or rear of the unit - the bottom
panel is removable to give better access when wiring.
Voltage Optimisers
If there is a vo tage optimiser insta ed at the property, care wi need to be taken when
positioning and wiring the immerSUN. The Sensor C amp and the immerSUN wi need to
'see' the same vo tage, whether this is the optimised vo tage or the non-optimised
vo tage.
Check the manufacturers instructions before connecting the immerSUN to an optimised
circuit – some optimisers should not be connected to heaters.
Three-Phase Systems
The immerSUN and the Sensor Clamp must be on the SAME PHASE.
If the generation is 3-phase, an immerSUN can be used on each phase, if on y one or two
immerSUN's are used, on y one-third or two-thirds of the surp us power wi be ab e to be
uti ised. The oads wi need to be sing e phase.

18
System Overview
INVERTER
WIND
TURBINE
PV
ARRAY
DISTRIBUTION
BOARD
ELECTRICITY
GRID
IMMERSUN
OTHER
LOADS
SENSOR
CLAMP
WATER
HEATER
(or other
heater)
GENERATION
METER
TERMINAL
BLOCK
ROOM HEATER
(optional)
Wireless Sensor
option available
SUPPLY
METER

19
immer INK™ (linking units)
MICRO
GENERATION
SYSTEM
DISTRIBUTION
BOARD
ELECTRICITY
GRID
IMMERSUN
(master)
SENSOR
CLAMP
WATER
HEATER
(or other
heater)
TERMINAL
BLOCK
Wire ess Sensor
option avai ab e
(uses immerLINK™)
Wireless
Communication
Link
IMMERSUN
(slaves)
Slaves
Up to 4 immerSUNs can be configured
as s ave devices.
The Master immerSUN wi contro a
s aves via the wire ess immerLINK™.
Each s ave must be powered from the
same phase as the master.
Each s ave must have its own oad.
The sensor does NOT connect to the
s ave devices.
immerLINK™ is a wire ess network used by immerSUN devices.
Up to 5 immerSUN units can be ' inked' together by using immerLINK™.
Linking severa units enab es more export power to be consumed, with each device being
ab e to contro a 3kW oad, up to 15kW of wou d-be exported power can be uti ised.
Use the immerLINK Search option in the Advanced Menu to ink devices.

20
immerSUN at a glance
646
312 4
5
xternal overview
1) LCD disp ay
2) Contro buttons
3) Cover (removab e)
4) Cover screws
5) Bottom pane (removab e)
6) Bottom pane screws