Immergas UB INOX SOLAR 200 V2 User manual

IE
Instructionsandrecommendations
Installer
User
Maintenance technician
UB INOX SOLAR
200 V2
Storage tank unit
*1.041261ENG*

Dear Customer,
Our compliments for having chosen a top-quality Immergas product, able to assure well-being and safety for a long period of time. As an
Immergas customer you can also count on a qualied aer-sales service, prepared and updated to guarantee constant eciency of your
storage tank unit.
Read the following pages carefully: you will be able to draw useful suggestions regarding the correct use of the appliance, the respect of
which, will conrm your satisfaction for the Immergas product.
For assistance and scheduled maintenance contact Authorised Aer-Sales centres: they have original spare parts and are specically trained
directly by the manufacturer.
General recommendations
All Immergas products are protected with suitable transport packaging.
e material must be stored in dry environments protected against bad weather.
e instruction book is an integral and essential part of the product and must be consigned to the new user also in the case of transfer or
succession of ownership.
It must be stored with care and consulted carefully, as all of the warnings provide important safety indications for installation, use and
maintenance stages.
is instructions manual provides technical information regarding installation of Immergas storage tank units. As for the other issues
related to installation of the said storage tank units (e.g. safety in the work site, environment protection, injury prevention), it is necessary
to comply with the provisions specied in the regulations in force and principles of good practice.
In compliance with legislation in force, the systems must be designed by qualied professionals, within the dimensional limits established
by the Law. Installation and maintenance must be performed in compliance with the regulations in force, according to the manufacturer’s
instructions and by an authorised company, which has specic technical expertise in the system sector, as required by Law.
Improper installation or assembly of the Immergas appliance and/or components, accessories, kit and devices can cause unexpected problems
to people, animals and objects. Read the instructions provided with the product carefully to ensure a proper installation.
Maintenance must be carried out by an authorised company. e Authorised Aer-sales Service represents a guarantee of qualication
and professionalism.
e appliance must only be destined for the use for which it has been expressly declared. Any other use will be considered improper and
therefore potentially dangerous.
If errors occur during installation, operation and maintenance, due to non compliance with technical laws in force, standards or instructions
contained in this book (or however supplied by the manufacturer), the manufacturer is excluded from any contractual and extra-contractual
liability for any damages and the appliance warranty is invalidated.
e manufacturer declines all liability due to printing or transcription errors, reserving the right to make any modications to its
technical and commercial documents without forewarning.

4
INDEX
1 Storage tank unit installation.........................................5
1.1 Installation recommendations.............................................. 5
1.2 Main dimensions.................................................................... 5
1.3 Connection unit...................................................................... 6
1.4 Hydraulic connection. ........................................................... 6
1.5 Electrical connection. ............................................................ 6
1.6 Filling the system.................................................................... 6
1.7 Domestic hot water storage tank unit.................................. 6
1.8 DHW mixing valve. ............................................................... 7
1.9 Storage tank unit hydraulic circuit resistance..................... 7
1.10 Main solar circulation unit components............................. 7
1.11 Circulation pump (solar heating system)............................ 8
1.12 Circulation pump with new wave 3 electronics. .............. 10
1.13 Commissioning..................................................................... 11
1.14 Filling the solar circuit system............................................ 11
1.15 Solar control unit user instructions. .................................. 12
1.16 Main components................................................................. 16
1.17 Kits available on request...................................................... 16
2 Use and maintenance instructions............................... 17
2.1 Cleaning and maintenance.................................................. 17
2.2 Emptying the storage tank unit. ......................................... 17
2.3 Cleaning the case.................................................................. 17
2.4 Decommissioning................................................................. 17
2.5 Control panel. ....................................................................... 17
3 Checks and maintenance..............................................18
3.1 Hydraulic diagram................................................................ 18
3.2 Wiring diagram..................................................................... 19
3.3 Yearly appliance check and maintenance.......................... 19
3.4 Removing the casing............................................................ 20
3.5 Replacing the anode............................................................. 20
4 Technical specications................................................21
4.1 Product sheet (in compliance with Regulation 812/203).22

5
1
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
In the event of malfunctions, faults or incorrect operation, turn
the appliance o and contact an authorised company (e.g. the
Authorised Technical Assistance centre, which has specically
trained sta and original spare parts). Do not attempt to modify
or repair the appliance alone.
Failure to comply with the above implies personal responsibility
and invalidates the warranty.
• Installation standards: these storage tanks have been designed for
oor installation; they must be used for the storage of domestic
hot water and similar purposes. ey have not be designed for
wall-installation.
Attention: these units are used to store water at a temperature
below boiling point at atmospheric pressure. ey must be con-
nected to a boiler and to a DHW water distribution network.
ey must be installed in rooms where the temperature cannot
fall below 0°C and must not be exposed to atmospheric agents.
“Anti-legionella” heat treatment of the Immergas storage tank
(activated by the specic function present on the predisposed
thermoregulatory systems): during this stage, the temperature
of the water inside the storage tank exceeds 60°C with a relative
risk of burns. Keep this domestic water treatment under control
(and inform the users) to prevent unforeseeable damage to people,
animals, things. If required install a thermostatic valve on the
domestic hot water outlet to prevent scalding.
1 STORAGE TANK UNIT INSTALLA
TION
1.1 INSTALLATION RECOMMENDATIONS.
e place of installation of the appliance and relative Immergas
accessories must have suitable features (technical and structural)
such to allow (always in safety, eciency and comfortable condi-
tions):
- installation (according to the provisions of the technical legisla-
tion and technical regulations);
- maintenance operations (including scheduled, periodic, routine
and special maintenance);
- removal (to outdoors in the place for loading and transporting
the appliances and components) as well as their eventual replace-
ment with appliances and/or equivalent components.
Only professionally enabled companies are authorised to install
Immergas appliances.
Installation must be carried out according to regulation standards,
current legislation and in compliance with local technical regula-
tions and the required technical procedures.
Before installing the appliance, ensure that it is delivered in perfect
condition; if in doubt, contact the supplier immediately. Pack-
ing materials (staples, nails, plastic bags, polystyrene foam, etc.)
constitute a hazard and must be kept out of the reach of children.
If the appliance is installed inside or between cabinets, ensure
sucient space for normal servicing; therefore it is advisable to
leave a gap of 2÷3 cm between the storage tank casing and the
sides of the cabinet.
Key:
V - Electrical connection
AC - Domestic hot water outlet
AF - Domestic cold water inlet
RU - Return from boiler unit
MU- Flow to boiler unit
RP - Return to solar panels
MP - Flow from solar panels
RC - Domestic hot water recirculation
(Optional)
CONNECTIONS
SYSTEM DOMESTIC
HOT WATER
MU -
RU
MP -
RP AF AC RC
3/4” 3/4” 3/4” 3/4” 1/2”
1.2 MAIN DIMENSIONS.

6
2
V
RU MU
RP MP RC
AF
AC
INSTALLATORE
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
1.4 HYDRAULIC CONNECTION.
Before making the connections, all of the system piping must be
washed thoroughly to remove any residues that could compro-
mise the proper operation of the storage tank. Water connections
must be made in a rational way using the couplings on the stor-
age tank template. e storage tank safety valve outlet must be
connected to a draining funnel. If this is not the case, the storage
tank manufacturer declines any liability in the event of ooding
if the drain valve cuts in.
1.5 ELECTRICAL CONNECTION.
e storage tank has an IPX0D protection rating for the entire
appliance. Electrical safety of the appliance is reached only when
it is correctly connected to an ecient earthing system as specied
by current safety standards.
Attention: Immergas S.p.A. declines any responsibility for damage
or physical injury caused by failure to connect the storage tank to
an ecient earth system or failure to comply with the reference
standards.
Also ensure that the electrical installation corresponds to maxi-
mum absorbed power specications as shown on the storage tank
data-plate. e storage tank unit is supplied complete with an “X”
type power cable without plug.
Solar manifold probe connection.
Connect the solar manifold probe to pins 45 and 46 on the termi-
nal board (Fig. 15 part. 17) present inside the storage tank unit,
paying attention to eliminate the resistance R15 as indicated in
the wiring diagram.
Storage tank connection to the boiler.
Connect the storage tank to the boiler as indicated in the wiring
diagram, using a cable (not present) to connect clamps 36 and 37
to the boiler and to the storage tank.
Storage tank unit electric connection.
e power supply cable must be connected to a 230V ±10% / 50Hz
mains supply respecting L-N polarity and earth connection; ,
this network must also have a multi-pole circuit breaker with class
III over-voltage category. When replacing the power supply cable,
contact a qualied rm (e.g. the Authorised Aer-Sales Technical
Assistance Service).
Key:
V - Electrical connection
AC - 3/4” Domestic hot water outlet
RU - 3/4” return from storage tank
MU- 3/4” ow to storage tank
AF - 3/4” domestic cold water inlet
RP - 3/4” return to solar panels
MP - 3/4” ow from solar panels
RC - 1/2” recirculation (optional)
For the main power supply to the appliance, never use adapters,
multiple sockets or extension leads.
Solar collector return probe connection (optional).
Connect the solar collector return probe to pins 8 and 7 on the
terminal board present inside the storage tank unit.
Attention: aer the connections have bee made, the new system
layout must be set on the solar control unit as follows:
- press the “i” key for about 10 seconds;
- use the scrolling keys to nd parameter 27 (system congura-
tion);
- press the “i” key for about 2 seconds.
- upon accessing parameter 27, you will nd that conguration 1
is set; use the scrolling keys to select conguration 2.
- press the “i” key to conrm the selected conguration.
1.6 FILLING THE SYSTEM.
Once the storage tank has been connected, ll the system via the
boiler lling valve. Filling is performed at low speed to ensure
release of air bubbles in the water via the boiler and central heat-
ing system vents.
Close the lling valve when the boiler manometer pointer indicates
approx. 1.2 bar (see boiler instruction book).
1.7 DOMESTIC HOT WATER STORAGE TANK UNIT.
e storage tank unit must be connected to a boiler. It contains
large coiled stainless steel heat exchanger pipes, which allow to
notably reduce hot water production times. is storage tank unit,
manufactured with stainless steel casing and bottoms, guarantees
long duration through time.
e assembly concepts and welding (T.I.G.) are implemented to
the minimum detail to ensure maximum reliability.
e upper inspection ange ensures practical control of the stor-
age tank unit and the coil heat exchanger pipe and easy internal
cleaning.
e DHW couplings are positioned on the lid of the ange (cold
inlet and hot outlet). e Magnesium Anode holder cap including
the same, supplied as per standard for the internal protection of
the storage tank from possible corrosion, is found on the side of
the storage tank.
1.3 CONNECTION UNIT.

7
3
A
4
1
IN OUT
2
9
8
11
4
5
7
12 6
13
1
2
3
4
5
6
7
6
10
11
1
4
8
12
9
2
13 3
5
14
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
Head (kPa)
Flow rate (l/h)
Head (m c.a.)
A - Storage tank unit hy-
draulic circuit resistance.
Any release of the three-way mixing valve. If aer a long period
of inactivity the three-way mixing valve is blocked, it is necessary
to act manually on the knob positioned on the top of the same in
a way to release the shutter of the valve itself.
1.9 STORAGE TANK UNIT HYDRAULIC CIRCUIT
RESISTANCE.
In order to guarantee sucient DHW ow rate, it is important
to consider the resistance of the storage tank hydraulic circuit to
be coupled to the boiler. (Fig. 3). In order to connect the stor-
age tank unit to Immergas boilers properly, refer to the boiler
instruction book.
1.10 MAIN SOLAR CIRCULATION UNIT
COMPONENTS.
e pump unit allows you to connect the storage tank to the solar
manifold, making the water circulate according to the request of
the control unit.
IMPORTANT NOTE: have the eciency of the storage tank
Magnesium Anode checked annually by a qualied rm. e
storage tank unit is prepared for introduction of the domestic hot
water pump tting.
1.8 DHW MIXING VALVE.
e thermostatic mixing valve mixes the cold water with the hot
water and via an internal wax element, sensitive to the tempera-
ture, automatically controls the temperature of the mixed water
set by the user.
N.B.: for excellent management of the temperatures, the mixing
valve must be set by the installer at a safety temperature required
by the user. e outlet temperature of the domestic hot water can
also depend on the value set on the boiler, however,the upper limit
temperature value of the domestic hot water is always determined
by the position of the mixing valve: knob position 1 = 42°C, 2 =
48°C, 3 = 54°C, 4 = 60°C (standard) (the values indicated refer to
a storage tank with water at 70°C).
Key:
1 - Solar pump
2 - Non return valve, thermometer and
cock
3 - Valve drain tting
4 - Flow meter
5 - 6 bar safety valve
6 - 3/4” connection for expansion
vessel
7 - Manometer
8 - Draining valve
9 - Filling valve
10 - Insulating casing
11 - Flow rate regulator
12 - Inlet
13 - Outlet
14 - Reference for ow rate reading
Hydraulic circuit resistance.

8
6
INSTALLATORE
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
Key:
1 - Function selection button
2 - Green (G) / red (R) LED
3 - 4 yellow LEDs (Y)
1.11 CIRCULATION PUMP SOLAR HEATING SYSTEM.
e units are supplied with circulating pumps tted with speed
regulator.
ese settings are suitable for most systems.
In fact, the pump is equipped with electronic control to set ad-
vanced functions. For proper operation one must select the most
suitable type of operation for the system and select a speed in the
available range, with a focus on energy savings.
Display of operation status (Fig. 6). During normal operation
the status LED (2) is on green (ashing FL when it is in stand-by),
the four yellow LEDs (3) indicate circulator absorption according
to the following table:
Circulating pump LED Absorption
G Y Y Y Y
FL O O O O
Circulator in stand-by
G Y Y Y Y
On On O O O 0 ÷ 25 %
G Y Y Y Y
On On On O O 25 ÷ 50 %
G Y Y Y Y
On On On On O 50 ÷ 75 %
G Y Y Y Y
On On On On On 75 ÷ 100 %
Selection of operating mode. To see the current operation mode
it is sucient to press button (1) once.
To change operation mode press the button for between 2 to 10
seconds until the current conguration ashing, each time the
button is pressed all possible functions are scrolled cyclically ac-
cording to the table (Fig. 5). Aer a few seconds without doing
any operation the circulator memorises the selected mode and
goes back to operation display.
- Constant curve: the pump operates with a contant curve. e
circulator working point will move up or down according to the
system’s demand.
- PWM Prole: do not use this operation mode.
Selection button lock. e button has a feature that locks its
operation to prevent accidental modications, to lock the control
panel it is necessary to press button (1) longer than 10 seconds
(during which the current conguration ashes), the active lock
is signalled by all LEDs of the control panel ashing. To unlock
the button press again longer than 10 seconds.
Real time diagnostics: in the event of malfunction the LEDs
provide information on the circulator operation status, see table
(Fig. 7):
5
Circulating pump LED Description
G Y Y Y Y
On On On O O Constant curve speed 1
G Y Y Y Y
On On On On O Constant curve speed 2
G Y Y Y Y
On On On On On Constant curve speed 3
G Y Y Y Y
On On On O On
Constant curve speed 4
(default)
DO NOT USE
Circulating pump LED Description
R Y Y Y Y
On O On O O PWM Prole speed 1
R Y Y Y Y
On O On On O PWM Prole speed 2
R Y Y Y Y
On O On On On PWM Prole speed 3
R Y Y Y Y
On O On O On PWM Prole speed 4

9
7
8
V4
A4
A3
A2
A1
V3
V2
V1
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
Circulating pump LED
(rst red LED) Description Diagnostics Remedy
R Y Y Y Y
On O O O On Circulator pump blocked
e circulator pump cannot
restart automatically due to
an anomaly
Wait for the circulator to make automatic
release attempts or manually release the
motor sha acting on the screw in the centre
of the head.
If the anomaly persists replace the circulator.
R Y Y Y Y
On O O On O
Abnormal situation (the
circulator continues oper-
ating).
low power supply voltage
Voltage o range Check power supply
R Y Y Y Y
On O On O O
Electrical fault
(Circulator pump blocked)
e circulator is locked due
to power supply too low or
serious malfunction
Check the power supply, if the anomaly
persists replace the circulator
Solar circulation unit available head.
Key:
Vn = Available head
An = Circulating pump absorbed power
Circulator pump absorbed power (W)
Flow rate (l/h)
Head (kPa)

10
9
10
INSTALLATORE
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
1.12 CIRCULATION PUMP WITH NEW WAVE 3
ELECTRONICS.
e units are supplied with circulating pumps tted with speed
regulator.
ese settings are suitable for most systems.
In fact, the pump is equipped with electronic control to set ad-
vanced functions. For proper operation one must select the most
suitable type of operation for the system and select a speed in the
available range, with a focus on energy savings.
Display of operation status (Fig. 9).
When the pump starts, the LED (2) lights up green for about 2
seconds, followed by short ashing at great intensity to then switch
o during normal operation. e LED (3) only lights up in PWM
setting, not used in the application. e three yellow LEDs (4)
indicate the three constant curve speeds.
Selection of operating mode.
e operating mode is always visible and indicated by the 3 yel-
low LEDs (4).
Info: All the LEDs are o when the pump is not powered.
Press the button (1) to change operating mode.
Every time the button is pressed, all the possible functions are
scrolled cyclically according to the following table:
Circulating pump LED Description
G Y Y YG Constant curve speed 1
G Y Y YG Constant curve speed 2
G Y Y YG Constant curve speed 3
G Y Y YG PWM - Do not use
G Y Y Y
G
PWM - Do not use
- Constant curve: the pump works maintaining system head con-
stant. e pump working point will move up or down according
to the system’s demand.
Attention: PWM Prole; Do not use this operating mode. If this
prole is selected, the pump will stop.
For the UB INOX SOLAR 200 V2 storage tank unit, the pump is
set at “Constant curve speed 3” by default.
Real time diagnostics: in the event of malfunction the LEDs pro-
vide information on the pump operation status, see table (Fig. 10):
Key:
1 - Function selection button
2 - Green (G) / red (R) LED
3 - Green (G) LED
4 - 3 yellow (Y) LEDs
Circulating pump LED
(rst red LED) Description Diagnostics Remedy
R Y Y Y Y Pump blocked
mechanically
e pump cannot restart
automatically due to an
anomaly
Wait for the pump to make automatic
release attempts or manually release the
motor sha acting on the screw in the
centre of the head.
If the anomaly persists replace the
pump.
R Y Y Y Y Abnormal situation (the
pump continues operat-
ing).
low power supply voltage
Voltage o range < 160 Vac Check power supply
R Y Y Y Y Electrical fault
(Pump blocked)
e pump is locked due to
power supply too low or
serious malfunction
Check the power supply if the anomaly
persists replace the pump

11
V3
A3
A2
A1
V2
V1
11
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
Solar circulation unit available head.
Key:
Vn = Available head
An = Circulating pump absorbed
power
Circulator pump absorbed power (W)
Flow rate (l/h)
Sarcina hidraulică (kPa)
1.13 COMMISSIONING.
Preliminary checks on the solar system
Before lling the hydraulic circuit and starting the system, carry
out the following checks:
- make sure the safety devices are included and are operating
properly, particularly:
- safety valve (6 bar)
- expansion vessel
- thermostatic mixing valve
- make sure there are no leaks in the hydraulic circuit;
- make sure there is an air vent valve positioned in the highest
point of the circuit above the manifold and that it is operational.
- check connection to a 230V-50Hz power mains, correct L-N
polarity and the earthing connection;
- Check that all the requirements relating to the boiler and the
central heating circuit have been complied with, as described
in the relative boiler instruction book.
If even only a single safety check oers a negative result, do not
commission the system.
Expansion vessel factory-set pressure of the solar circuit hy-
draulic unit.
To compensate the high temperatures that can be reached by the
liquid in the circuit and therefore its dilation, an expansion vessel
has been tted on the UB INOX SOLAR 200 V2 storage tank, with
sucient capacity to perform this task. e expansion vessels are
supplied factory-set at 2.5 bar. It is therefore necessary to charge
them to the pressure necessary for the circuit.
e expansion vessel must be charged to:
2 bar + 0.1 bar for every metre of the water column.
“metre of the water column” means the vertical distance that is
present between the expansion vessel and the solar manifold.
Example:
e circulation unit is found on the ground oor and the solar
manifold is found on the roof at a hypothetical height of 6 m, the
distance to be calculated is:
6 m x 0.1 bar = 0.6 bar
therefore the expansion vessel must be charged to:
2 + 0.6 = 2.6 bar
Hydraulic unit safety valve.
ere is a safety valve present on the hydraulic unit that protects
the system from an excessive increase in pressure. is valve in-
tervenes by discharging the liquid contained in the circuit when
the pressure reaches 6 bar.
If the safety valve intervenes and therefore part of the liquid con-
tained in the circuit is lost, it must be re-integrated.
1.14 FILLING THE SOLAR CIRCUIT SYSTEM.
e system can only be lled when:
- the system is completely assembled;
- any operational residues have been eliminated that may cause
obstructions and deteriorate the features of the glycol over time;
- any presence of water in the system has been eliminated, which
could otherwise cause damage to the system in winter;
- the absence of leaks has been veried by checks using air;
- the storage tank unit has been lled;
- the expansion vessel has been charged according to system
requirements.
e system must be lled only using the glycol supplied by Im-
mergas via an automatic pump. e system must be lled with
vent valve closed.
Proceed as follows to ll the system:
1 connect the ow pipe of the automatic pump to the tting of
the lling valve (9 Fig. 4) located under the pump and open
the valve.
2 connect the return pipe of the automatic pump to the tting of
the draining valve (8 Fig. 4) and open the draining valve.
3 e ow-rate regulator screw (11 Fig. 4) must be orientated
horizontally to ensure the closure of the integrated ball valve.
Open the ball valve with thermometer (2 Fig. 4) above the
pump.
4 Fill the lling pump tank with the amount of glycol necessary
plus a minimum amount to be le on the bottom of the tank
in order to prevent air circulating inside the circuit.
5 e lling stage must have a minimum duration of 20 ÷ 25
minutes. is time is required to completely remove all air from
the circuit. Every now and again open the ow rate regulator
adjustment screw in order to eliminate air from inside (vertical
position).

12
INSTALLATORE
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
6 Eliminate any air in the solar circuit preferably using the so-
called “pressure shot” method, which consists in raising the
lling pressure of the circuit followed by a quick opening of the
return valve (8 Fig. 4). is method allows air to be expelled
from the circuit.
7 Close the lling cock and switch the lling pump o, open the
regulator screw of the ow rate regulator (notch in vertical
position).
8 Leave the circuit pressurised. Any pressure drop indicates a
leak in the system.
9 Set the functioning pressure in the circuit at 2.0 bar + 0.1 bar
for every metre in the distance between the solar collector and
the expansion vessel (practically, set the same pressure between
expansion vessel and system).
10 Switch the solar pump on at a maximum speed and make it
run for at least 15 minutes.
11 Disconnect the lling pump and close the ttings using the
relevant screw caps.
12 Open the ball valve above the pump completely.
Do not ll the system in conditions with strong insolation and
with the manifolds at high temperatures.
Make sure that all air bubbles have been completely eliminated.
1.15 SOLAR CONTROL UNIT USER INSTRUCTIONS.
e solar control unit user information are described successively.
Description of display.
Symbol State Description
Flashing Solar pump functioning
On Boiler burner enabled
On Communication with boiler active
Flashing Anomaly present
On Solar collector temperature sucient for functioning
Flashing Anti-freeze function active
On Digit to display the temperatures, parameters and values.
Sn On
Probe active
S1 - DHW inhibition probe (NTC)
S2 - Solar storage tank probe (NTC)
S3 - Solar collector probe (PT1000)
On Indicates the presence of the storage tank
On Indicates the presence of solar panel/s
Description of the control panel.
Symbol Description
Control unit switch-on - switch-o/Return to previous menu
Parameter/next value selection
Parameter/previous value selection
Access to the parameters/system info/value conrmation
• Programming the functions.
Access to the board parameters menu is given through the buttons
present on the control unit.
To access the parameters menu and modify a value necessary:
- Press and hold the ( ) key for 10 seconds. (access to the menu)
- Scroll to the parameter to be modied by pressing the ( ) and
() buttons.
- Press the ( ) key and then ( ) to modify the value of the
parameter selected.
- Select the value and press the ( ) key to conrm. Otherwise, press
() to exit. In this case, the value set will not be memorised,
but the previous one will be kept.
- To exit the parameter menu, press the ( ) button once or wait
60 seconds without pressing any keys.

13
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
N°
Parameter Description of the Parameter Values Field Default
1 Soware Version 1÷99 10
2 Current temperature S1: NTC sensor (°C) 0÷120 --
3 Current temperature S2: NTC sensor (°C) 0÷120 --
4 Current temperature S3: PT1000 sensor (°C) 0÷170 --
5 Current temperature S4: PT1000 sensor (°C) 0÷170 --
6Maximum temperature S1 (with period of 24 hours starting from their last switch-on of
the device from OFF mode): NTC sensor (°C) 0÷120 --
7Maximum temperature S2 (with period of 24 hours starting from their last switch-on of
the device from OFF mode): NTC sensor (°C) 0÷120 --
8Maximum temperature S3 (with period of 24 hours starting from their last switch-on of
the device from OFF mode): PT1000 sensor (°C) 0÷170 --
9Maximum temperature S4 (with period of 24 hours starting from their last switch-on of
the device from OFF mode): PT1000 sensor (°C) 0÷170 --
10 Current modulating pump speed (Vel.1=40% ÷Vel.5=100%) 0÷100% --
11 System functioning hours timer -- --
12 Value of the Δow - return solar collector temperature dierential for solar pump
switch/on (in presence of return probe) 5÷30°C 10°C
13 Value of the temperature dierential for the modulation of the solar pump (for speeds 1
and 2) 5÷20°C 10°C
14 Value of the temperature dierential for the modulation of the solar pump (for speeds 3,
4 and 5) 2÷10°C 5°C
15 Tank set-point (solar pump switch-o temperature) 60÷80°C 70°C
16 Value of the Δ solar collector ow - tank temperature dierential for solar pump switch-
on 3÷20°C * 5°C
17 Solar collector ow Maximum Temperature (°C) 90÷160°C 140°C
18 Tank Maximum Temperature (°C) 70÷95°C 80°C
19
Value of the temperature dierential between the solar collector maximum temperature
(PAR 17) and the solar collector temperature, above which the solar collector cooling
function activates (Solar collector cooling function) (0=Function deactivated)
0÷20°C 0
20 Diverter functioning (0 = O, 1 = Auto, 2 = On) 0 ÷ 2 1
21 Value of the Δ ow - return temperature dierential below which the collector is recog-
nised as cold (Cold solar collector recognition func.) 0÷10°C 5°C
22 Value of the Δ collector ow - tank temperature dierential for solar pump switch-o 1÷10°C * 3°C
23 Solar collector anti-freeze temperature value (see Solar collector anti-freeze func.)
(0=Function deactivated, 1÷10°C=Protection temperature) 0÷10°C 0
24 Solar Pump functioning (0=On/O, 1=Modulating, 2 = On, 3 = O) 0÷3 0
25 Appliance conguration
(stand alone=1, PLB-BUS=2, PLB-BUS remote control only=3) 1÷3 1
26 Selected system layout - DO NOT MODIFY 1÷6 6
27 System conguration (the range of values varies on the basis of the system selected) 1÷4 1
28 Priority logic (1= S1 has priority over S2 / 2= S2 has priority over S1) 1÷2 2
29 ermostat insertion temperature (S1) 30÷90°C 30°C
30 ermostat disconnection temperature (S1) 30÷90°C 30°C
31 DHW set 20÷60°C 45°C
32 Priority integration (0=Function deactivated) 0÷10°C 5°C
33 Parallel integration (0=Function deactivated) 0÷20°C 10°C
34 Solar pump functioning (0 = O, 1 = Auto, 2 = On) 0 ÷2 1
*=the range of parameters 16 and 22 is dynamic, it is not allowed to set a ∆ between these two parameters lower than 2.
List and description of parameters available.
e board has 34 parameters.
e parameters that go from 1 to 11 is simple information and
cannot be modied.

14
INSTALLATORE
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
• Use and operation.
- Start-up display.
Every time power is supplied to the appliance, the display will
activate all symbols for 2 seconds:
8
while in the next 5 seconds, the display will indicate the board
soware version:
9
Aer which, the following information regarding the type of
system will be displayed, the temperature of the solar collector
(1 ÷ 170°C upper digit) and the temperature of the storage tank
probe (1 ÷ 125°C lower digit):
10
•Functioning.
For the description of the parameters, refer to the table in the
previous paragraph
- OFF mode. By pressing the ( ) key for 3 seconds, the appli-
ance switches to o mode (also in the event of anomalies). In
this way, it is not operational and the display shows o. Only
the anti-freeze protection and the pump anti-block remain
active.
- Solar pump functioning.
e pump activates and deactivates automatically when it is
set in On/O mode.
Activation: the solar pump will be activated by the board if the
following conditions occur at the same time:
T tank < PAR15 – PAR16
and
Solar collector T - tank T > PAR16
Disabling: the board disables the solar pump if one of the fol-
lowing conditions occurs:
Tank T > PAR 15
or
Solar collector T< tank T + PAR 22
Manual mode: the pump can be set in On mode (always on)
or O mode (always o). In the event of manual setting, the
protection functions are inhibited.
- Solar manifold cooling function. is function is used to
manage the pump in the event of overheating of the solar panel
according to the following table:
Description Condition
Solar pump activa-
tion
PAR 15 < tank T < PAR 18
+
Solar collector T > PAR 17 - PAR 19
Solar pump deacti-
vation
Solar collector T (PAR 17 - PAR 19) -1°C
or
Tank T ≥ PAR 18 +1°C
or
Solar collector T > PAR 17
(reactivates with solar collector T <
PAR17 -1°C)
With parameter 19=0, the solar collector cooling function is
deactivated; the following conditions remain active:
Solar collector T > PAR17 => Solar pump o
Solar collector T < PAR17– 1°C => Solar pump on
- Cold solar manifold recognition function. e board will
disable the solar pump (present only with return probe) when:
Solar collector T– solar collector return T < PAR 21
- Solar manifold anti-freeze function. e Solar Pump activates
when:
Solar collector T < PAR 23
e board will not deactivate the solar pump until:
Solar collector T > PAR 23 + 1°C

15
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
Attention: the default anti-freeze function is disabled PAR
23=0
- Solar pump anti-block function. Aer 24 hours of inactivity,
the system pumps are activated for 3 seconds.
- Diverter valve anti-block function. Aer 24 hours of inactivity,
the diverter valve will be activated for 5 seconds (in systems
tted with the diverter valve).
- Priority solar function. e function is active when:
DHW inhibition probe T (PAR 31 - PAR 33) < DHW set (paral-
lel integration)
DHW inhibition probe T (PAR 31 - PAR 33) < DHW set (pri-
ority integration) and solar loading pump in o for a time > 5
minutes
• Anomalies.
e following table describes the possible anomalous conditions
that will be displayed on the basis of the system ration selected.
e possible functioning error conditions are displayed on the
user interface display.
If an anomaly should occur, the ( ) symbol starts to ash as
well as the back light (anomaly).
If a no communication anomaly should occur, the ( ) + (
) symbols start to ash as well as the back light (communication
anomaly).
Description of anomaly Fault code
S1 NTC sensor fault 81
S2 NTC sensor fault 82
S3 T1000 sensor fault 83
Solar pump o 87
- Anomaly 81 NTC Sensor faulty: the sensor fault, i.e. a short
circuit or open circuit, disables the Solar Pump (active system
protection). e protection is deactivated immediately when this
fault is resolved.
- Anomaly 82 NTC Sensor faulty: the sensor fault, i.e. a short
circuit or open circuit, disables the Solar Pump (active system
protection). e protection is deactivated immediately when this
fault is resolved.
- Anomaly 83 PT1000 Sensor faulty: the sensor fault, i.e. a short
circuit or open circuit, disables the Solar Pump (active system
protection). e protection is deactivated immediately when this
fault is resolved.
- Solar pump O: the solar control unit indicates that the solar
pump is in forced O mode (parameter 24).
• Technical data.
Power Supply:................................................230 Vac + 10% ÷ 15%
Frequency:........................................................................50 Hz ±5%
Mains (PF1):.................................................... 3,15 AF (rapid) 5x20
Free contact outputs:.............................................. 5A 30 Vdc relay,
10 A 250 Vdc
(Maximum charge allowed : 0,25 A 230 Vac)

16
15
INSTALLATORE
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
Key:
1 - Domestic hot water circuit mixing valve
2 - Stainless steel coil for storage tank
3 - Domestic hot water probe
4 - D.H.W. expansion vessel
5 - Magnesium anode
6 - Domestic hot water unabling probe
7 - 8 bar safety valve
8 - Storage tank unit draining valve
9 - Shut-o valve with thermometer
1.16 MAIN COMPONENTS.
10 - 6 bar safety valve
11 - Solar pump
12 - ermometer probe
13 - Flow meter
14 - Solar expansion vessel
15 - Stainless steel coil that can be coupled to solar
panels
16 - Solar panel probe
17 - Storage tank electric connections terminal board
1.17 KITS AVAILABLE ON REQUEST.
• Recirculation kit (on request). e storage tank unit is prepared
for application of the pump kit. Immergas supplies a series of
ttings and attachments that allow connection between the
storage tank unit and domestic hot water system. e pump kit
attachment is also envisioned on the template.
• Electronic anode kit (on request). Direct current is made to
circulate between the device and the tank to be protected via a
special titanium anode. Use the free tting on the storage tank
supper ange for installation of the anode.
e above-mentioned kits are supplied complete with instructions
for assembly and use.

17
16
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
2 USE AND MAINTENANCE IN
STRUCTIONS
2.1 CLEANING AND MAINTENANCE.
Attention: to preserve integrity of the storage tank unit and keep
the safety features, performance and reliability, which distinguish
it, unchanged over time, you must at least execute maintenance
operations on a yearly basis in compliance with what is stated in
the relative point at “annual check and maintenance of the appli-
ance”, in compliance with national, regional, or local standards in
force. Annual maintenance is essential to validate the Immergas
warranty. We recommend stipulating a yearly cleaning and main-
tenance contract with an authorised local rm.
2.2 EMPTYING THE STORAGE TANK UNIT.
To drain the storage tank, use the special draining valve in the
lower part of the storage tank (Fig. 15 part. 8).
Before draining, ensure that the DHW inlet valve is closed.
2.5 CONTROL PANEL.
Key:
1 - Solar control unit
2 - Solar manometer
2.3 CLEANING THE CASE.
Use damp cloths and neutral detergent to clean the storage tank
casing. Never use abrasive or powder detergents.
2.4 DECOMMISSIONING.
In the event of decommissioning the storage tank, contact an au-
thorised company for the relative operations, among other things
making sure that water supply is disconnected.
At the end of its service life the appliance must not be disposed of
like normal household waste nor abandoned in the environment,
but must be removed by a professionally authorised company.
Contact the manufacturer for disposal instructions.

18
17
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
3 CHECKS
AND MAINTENANCE
3.1 HYDRAULIC DIAGRAM.
Key:
1 - Storage tank unit draining valve
2 - 8 bar safety valve
3 - Magnesium anode
4 - D.H.W. expansion vessel
5 - Stainless steel coil for storage tank
6 - System draining valve
7 - Domestic hot water circuit mixing valve
8 - Mixing valve lter
9 - One-way valve (OV 20)
10 - Cold water inlet lter
11 - One-way valve (OV 15) (Optional)
12 - Cold water inlet cock
13 - One-way solar valve
14 - 6 bar safety valve
15 - Shut-o valve with thermometer
16 - Solar expansion vessel
17 - Solar pump
18 - Flow meter
19 - Domestic hot water probe
20 - Domestic hot water unabling probe
21 - Stainless steel coil that can be coupled to solar panels
22 - Solar system draining valve
23 - Solar panel probe
AC - Domestic hot water outlet
RC - Recirculation (Optional)
AF - Domestic cold water inlet
MU- Flow to boiler unit
RU - Return from storage tank unit
MP - Flow from solar panels
RP - Return to solar panels

19
18
3
2
1
4
4
5
5
6
7
10
8
9
9
8
13
13
13
14
4
6
12
12
6
5
5
4
4
8
9
8
9
9
8
11
11
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
3.2 WIRING DIAGRAM.
e solar collector probe (B11) must be connected to clamps 45
and 46 eliminating the resistance R15.
3.3 YEARLY APPLIANCE CHECK AND
MAINTENANCE.
e following checks and maintenance should be performed at
least once a year.
- Check for water leaks or oxidation from/on the ttings;
- Check that the safety and control devices have not been tampered
with and in particular, the DHW regulation NTC probe;
- Check the integrity of the storage tank Magnesium anode;
- Check the state of the internal coil;
- Check for any slurry deposits on the bottom of the storage tank.
Key:
A12- Solar management control unit
B2 - Domestic hot water probe (NTC)
B11 - Solar manifold probe (PT1000)
B12 - Solar storage tank probe (NTC)
B19 - DHW inhibition probe (NTC)
B20 - Solar manifold return probe (PT1000) (Optional)
M6 - Solar circuit circulator
R8 - Storage tank function unabling resistance
R15 - Solar manifold probe unabling resistance
1 - Supply voltage 230 Vac 50 Hz
2 - Boiler clamps 36 and 37
3 - Domestic hot water integration
4 - Black
5 - White
6 - Green
7 - Orange
8 - Blue
9 - Brown
10 - Purple
11 - Red
12 - Yellow
13 - Yellow/green
14 - Grey

20
19
1
2
222
4
4
3
4
5
5
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
3.4 REMOVING THE CASING.
To facilitate storage tank maintenance, the casing can be com-
pletely removed as follows:
IMPORTANT NOTE: the procedure for removing the casing is
the same for all storage tank unit models.
- remove the lid (1) by pulling it upwards;
- undo the screws (2) and pull the front panel outwards (3);
- undo the screws (4) of the sides (5) on the top and in the lower
part of the sides themselves. Aer having released them from
the screws, they can be removed by pulling them forward and
then upwards.
3.5 REPLACING THE ANODE.
If it is necessary to replace the magnesium anode (Fig. 15 det. 5)
present in the storage tank, replace the latter with another having
the same characteristics.