AERMEC SAF User manual

Thermo-accumulator kit with instantaneous Domestic Hot Water production - Installation, use and maintenance manual
SAF
THERMOACCUMULATOR KIT WITH INSTANTANEOUS DOMESTIC HOT WATER PRODUCTION
SAF_5523451_09

Bevilacqua (VR) Commercial Director
Luigi Zucchi
AERMEC S.p.A.
37040 Bevilacqua (VR) Italy –Via Roma, 996
Tel. [phone]
Telefax 0442 93577–([phone]
www.aermec.com
DICHIARAZIONE DI CONFORMITÀ UE
EU DECLARATION OF CONFORMITY / DECLARATION DE CONFORMITE UE
KONFORMITÄTSERKLÄRUNG EU / DECLARACIÓN DE CONFORMIDAD UE
SAF
Noi, firmatari della presente, dichiariamo sotto la nostra esclusiva responsabilità che l'insieme in oggetto così definito:
We, the undersigned, hereby declare under our own responsibility that the assembly in question, defined as follows:
Nous, Signataires du présent acte, déclarons sous notre responsabilité exclusive que le groupe cité à l’objet défini de la façon suivante:
Die Unterzeichner erklären unter eigener Verantwortung, dass die oben genannte Maschineneinheit, bestehend aus:
Nosotros, los abajo firmantes, declaramos bajo nuestra exclusiva responsabilidad, que el conjunto en cuestión, denominado:
Nome / Name / Nom / Name / Nombre SAF
Tipo / Type / Type / Typ / Tipo Accumulo acqua calda sanitaria
A cui questa dichiarazione si riferisce è conforme a tutte le disposizioni pertinenti delle seguenti direttive:
To which this declaration refers, complies with all the provisions related to the following directives:
Auquel cette déclaration se réfère, est conforme à toutes les dispositions relatives des directives suivantes:
Das Gerät, auf welches sich diese Erklärung bezieht, entspricht allen Verordnungen im Zusammenhang mit den folgenden Richtlinien:
A la que esta declaración se refiere, es conforme con todas las disposiciones pertinentes de las siguientes directivas:
Direttiva Bassa Tensione LVD: 2014/35/UE
Direttiva compatibilità elettromagnetica EMCD: 2014/30/UE
L’oggetto della dichiarazione di cui sopra è conforme alle pertinenti normative di armonizzazione dell’Unione:
The above-mentioned declaration complies with the harmonised European standards:
L'objet de la déclaration reportée ci-dessus est conforme aux normes d’harmonisation relatives de l'Union:
Der Gegenstand der genannten Erklärung entspricht den diesbezüglichen harmonisierten Normen der europäischen Gemeinschaft:
El objeto de la declaración de arriba es conforme con las normativas pertinentes de armonización de la Unión:
CEI EN 60335-2-40: 2005 + CEI EN 60335-2-40/A1: 2007
CEI EN 61000-6-2: 2006
CEI EN 61000-6-3: 2007
CEI EN 61000-4-4: 2013
CEI EN 61000-4-6: 2014
La presente dichiarazione di conformità è rilasciata sotto la responsabilità esclusiva del fabbricante.
This declaration of conformity has been released under the exclusive responsibility of the manufacturer.
La déclaration de conformité présente est délivrée sous la responsabilité exclusive du fabricant.
Diese Konformitätserklärung wurde unter der ausschließlichen Verantwortung des Herstellers ausgestellt.
Esta declaración de conformidad se ha otorgado bajo la responsabilidad exclusiva del fabricante.
Firmato a nome e per conto di AERMEC S.p.A.
Signed for and on behalf of AERMEC S.p.A.
Signé par et au nom de AERMEC S.p.A.
Unterzeichnet für und im Namen von AERMEC S.p.A.
Firmado en nombre de AERMEC S.p.A.

Index
General information............................................................................................................. 4
Choosing the unit.................................................................................................................. 4
Conformity............................................................................................................................... 4
Symbols .................................................................................................................................... 4
General warnings .................................................................................................................. 5
Permissible use....................................................................................................................... 5
Remarks .................................................................................................................................... 5
Fundamental safety rules................................................................................................... 5
Instructions for the user...................................................................................................... 5
Machine identification ........................................................................................................ 6
Recommended equipment ............................................................................................... 6
Main features .......................................................................................................................... 7
Machine description ............................................................................................................ 8
Accessories .............................................................................................................................. 8
Main machine components............................................................................................... 9
Components of the various versions ............................................................................. 9
Reception...............................................................................................................................10
Preliminary warnings.........................................................................................................10
Checking on arrival.............................................................................................................10
Handling with packaging.................................................................................................10
Lifting with forks..................................................................................................................10
Lifting with crane ................................................................................................................10
Removing the packaging .................................................................................................10
Supply......................................................................................................................................11
Removing from the pallet................................................................................................11
Access to inner parts..........................................................................................................11
Installation .............................................................................................................................12
Preliminary warnings.........................................................................................................12
Checking operative spaces..............................................................................................12
Positioning units..................................................................................................................12
Hydraulic connections.......................................................................................................13
Preliminary warnings.........................................................................................................13
Internal circuit diagrams...................................................................................................13
SAF............................................................................................................................................13
SAF T.........................................................................................................................................14
SAF S ........................................................................................................................................14
BASIC Connection diagrams ...........................................................................................15
Example of system with SAF°..........................................................................................15
Example of system with integration from fireplace or boiler for SAF T ...........15
Example of system with SAF_S and SAF_T integration ........................................16
Example of system with solar integration with SAF S............................................16
Example of system with schematic diagram for circulation pump connection17
Connection............................................................................................................................17
Filling the system.................................................................................................................17
Draining the system ...........................................................................................................17
Electric connections ...........................................................................................................18
Preliminary warnings.........................................................................................................18
Power supply connection.................................................................................................18
Auxiliary connections ........................................................................................................18
Auxiliary connection terminal board ...........................................................................19
Start-up...................................................................................................................................20
Preliminary warnings.........................................................................................................20
Functioning features..........................................................................................................20
DHW set-point:.....................................................................................................................20
Heat generator set point ..................................................................................................20
Control panel ........................................................................................................................20
Display.....................................................................................................................................20
Key functions ........................................................................................................................20
Procedures.............................................................................................................................21
Extended shutdown...........................................................................................................21
Maintenance .........................................................................................................................22
Preliminary warnings.........................................................................................................22
Routine maintenance ........................................................................................................22
Troubleshooting ..................................................................................................................22
User...........................................................................................................................................23
Control panel ........................................................................................................................23
Display.....................................................................................................................................23
Key functions ........................................................................................................................23
Procedures.............................................................................................................................24
User page display................................................................................................................24
Extended shutdown...........................................................................................................25
Technical information........................................................................................................26
Technical data.......................................................................................................................26
SAF............................................................................................................................................26
SAF T.........................................................................................................................................26
SAF S ........................................................................................................................................27
DHW production at different sampling temperatures ..........................................27
DHW quantity with 8 kW generator .............................................................................28
DHW quantity with 12 kW generator...........................................................................28
DHW quantity with 16 kW generator...........................................................................29
Solar heat exchanger yield...............................................................................................29
Pressure drops supplementary coils and characteristic solar circulator.........30
Dimensions............................................................................................................................31
SAF° ..........................................................................................................................................31
SAF T.........................................................................................................................................32
SAF_S.......................................................................................................................................33
Wiring diagrams...................................................................................................................35

SAF_5523451_09
4
GENERAL INFORMATION
CHOOSING THE UNIT
By appropriately combining the variety of options available, every model can be congured in order to meet all specic system require-
ments.
Field Code
1,2,3 SAF
4,5,6 Size
200-300-500
7 Version
° Standard
S With supplementary energy source management (2)
T Supplementary energy source preparation (2)
8.9 Fields for future developments
°
°
SYMBOLS
The following symbols are used inside this publication and/or the appliance:
Danger Calls attention to actions which, if not correctly followed, can cause serious injury.
Prohibition Calls attention to actions that impose prohibition.
U
User Information, paragraph, chapter of the manual that is of interest to the user or installation.
I
Installer Information, paragraph, chapter of the manual that is of interest to the installer.
A
After-sales Technical Service Information, paragraph, chapter of the manual that is of interest to the installer.
(2) not available Version for size 200

SAF_5523451_09 5
GENERAL WARNINGS
Permissible use
Read this sheet carefully.
The documentation supplied with the unit must be delivered to
the owner to keep it with care for any future maintenance or as-
sistance.
The company declines all contractual and non-contractual li-
ability for damage to persons, animals or things, due to incor-
rect installation, adjustment and maintenance, to improper use
or to partial or supercial acquaintance with the information
contained in this manual; furthermore, in its quest to continu-
ally improve its products, the company reserves the right to alter
the data expressed at any time and without notice and shall not
be liable for any inaccuracies contained in this booklet, if due to
printing or copying errors.
These devices were designed for domestic hot water produc-
tion. Other applications that are not expressly authorised by the
are to be considered improper and, therefore, not allowed.
The location, hydraulic and electrical system must be estab-
lished by the designer and should take into account both the
purely technical needs of any local laws in force and of specic
authorisations.
All work must be done by expert qualied sta, aware of the
Standards in force on this subject in dierent countries.
Upon delivery of the goods by the carrier, check the integrity of
both the packaging and the units; should there be any damage
or missing components, note it on the delivery note and send
a formal complaint to the company by fax or registered letter
within 8 days from when the goods were received.
The warranty is void if:
the personnel authorised by the company is not present when
the device is commissioned.
– in the event of failure to comply with the above-mentioned
instructions.
Remarks
Keep the manual in a dry place, in order to prevent deterioration,
for at least 10 years for any further reference.
Pay particular attention to the user regulations accompanied by
“danger”, “prohibition” or “obligation” in so much as, if not com-
plied with, the unit or objects may be damaged and/or persons
injured.
The manufacturer declines all responsibility for any damage due
to improper use of the machine, partial or hasty reading of the
information contained in this manual.
• The appliance must be installed in such a way as to make main-
tenance and/or repairs to be carried out possible.
The appliance warranty does not cover the costs for ladders,
scaolding, or other elevation systems that may become neces-
sary for carrying out servicing under warranty.
The manufacturer does not issue drawings or specications of
the connection systems.
Any exceptions to the requirements contained in this manual
must be approved in writing by the manufacturer's technical
support.
For anomalies not contemplated by this manual, contact the
After-sales Service as soon as possible.
Fundamental safety rules
We remind you that the use of products that employ electrical en-
ergy and water requires that a number of essential safety rules be
followed, including:
This appliance must not be used by children and unaided disa-
bled persons.
It is prohibited to touch the appliance when you are barefoot
and with parts of the body that are wet or damp.
It is prohibited to perform any cleaning operation before hav-
ing disconnected the electrical mains by positioning the system
master switch to "o".
It is prohibited to modify the safety or adjustment devices with-
out authorisation and instructions from the manufacturer.
It is prohibited to pull, detach or twist the electrical cables com-
ing out of the unit even if it is disconnected from the electrical
mains.
It is prohibited to open the doors for accessing the internal parts
of the appliance unless the system is o via master switch.
It is prohibited to climb onto the unit, sit on it and/or rest any
type of object on it.
It is prohibited to spray or jet water directly onto the unit.
It is prohibited to disperse, abandon or leave the packing materi-
als (boxes, staples, plastic bags, etc.) within the reach of children,
as they are a potential source of danger.
Observe safety distances between the machine and other equip-
ment or structures to ensure sucient access space to the unit
for maintenance and/or assistance as indicated in this manual.
(see the chapter on technical spaces).
Powering the unit: must be through the cable provided on the
unit and connected to a wall socket appropriate to the voltage
values and absorption of the appliance.
The hydraulic connection should be made according to the in-
structions in order to ensure the unit operates properly.
If the unit is not running during the cold season, empty all the
machine hydraulic circuits to keep them from freezing.
Handle the drive with the utmost care, avoiding damaging it.
INSTRUCTIONS FOR THE USER
Keep this manual along with wiring diagram in a place that is
accessible to the operator.
Write down the unit identication data so that you can provide
them to the service centre should you need to request service
(see the“machine identication”paragraph).
We recommend keeping track of service done on the unit, as this
will facilitate any potential troubleshooting.
In case of failure or malfunction:
– check the type of alarm to notify the Service Center;
– turn o the unit immediately without resetting the alarm;
– contact an authorised service centre;
– request the use of only original spare parts.
Ask the installer to be trained on:
– switch-on/o;
– extended shutdown
– maintenance;
– what to do/not to do in the event of a fault.

SAF_5523451_09
6
MACHINE IDENTIFICATION
The equipment can be identied by:
– Packaging plate.
It bears the equipment identication data.
– Feature plate.
Secured to the machine, it bears the equipment technical and
performance data. In case of loss or deterioration, request a du-
plicate from the technical service centre.
Tampering, removal, deterioration of identication tags makes it
dicult to carry out any installation or maintenance and request
spare parts.
RECOMMENDED EQUIPMENT
To install the equipment, it is advisable to use the following
equipment:
– Set of Phillips head and at head screwdrivers;
– Wire cutters;
– Scissors;
– Set of open end spanners and pipe wrenches;
– Ladder;
– Hydraulic material to apply gaskets to the threading;
– Electric equipment for connections;
– Cut resistant gloves.
1. Packaging plate
2. Feature plate
2
1
1. Packaging plate
2. Feature plate
1
2

SAF_5523451_09 7
SAF INSTANTANEOUS DHW PRODUCER WITH INTEGRATED ACCUMULATION TANK
• SAF is an innovative whole“plug and play”system - an instanta-
neous producer of domestic hot water with an elegant, original
design.
• Suitable for heating systems powered by one energy source or
more (traditional boiler, heat pump, biomass boiler, solar pan-
els, etc.), it guarantees the instantaneous production of domes-
tic hot water at the temperature set by the user, and with limited
scale formation. Heat exchange is ensured by a plate exchanger
in AISI 316 stainless steel guaranteeing optimum hygiene and
excellent performance. The heat exchanger is combined with a
heat accumulation tank that supplies it with energy. The system
contains all the necessary components, and has a control unit
with graphic display so that the user can monitor operation and
easily set the working parameters.
• The heart of the SAF system is its particular electronic adjust-
ment, guaranteeing that the required DHW temperature is
reached and maintained by modulating the ow rate on the
primary circuit.
THIS GUARANTEES:
• the maximum thermal head on the primary circuit, to optimise
generator eciency (heat pump, solar panels, biomass, etc.)
• accurate, reliable adjustment
Thanks to the rst-class eciency of the heat exchange system, this
module is ideal for residential or commercial installations powered
by a heat pump or even with solar panels, and using low-tempera-
ture accumulation (50-55°C).
3
7
4
1
2
5
6
MAIN FEATURES
• High exchange eciency in systems with a discontinuous gen-
erator or at low temperatures
• Easy, cost-eective use
• Ecient even at low ow rates (minimum 2 litres/min)
• Maximum hygiene in anti-legionella mode
• Highly precise temperature adjustment
• High-eciency circulation pump (complying with the 2005/32
EC directive) with electronic rpm adjustment
• Graphic display showing the system and power yield tempera-
tures
• Space saving compared with the exchanger + remote accumu-
lation solution
• Cost-eective installation
• Plug and Play system
• Very thick, rigid insulation in injected PU with low thermal dis-
persion (energy class B)
• Monobloc structure with an original,
• attractive design and nishing touches that make it a furnishing
element
• “All-in”integration with other generators (for suitable versions)
• Specic, supplementary solar module
KEY
1 Heat accumulation tank
2 Coil (S and T versions)
3 Heat exchanger for DHW
4 Flow rate/temperature gauge
5 Electric panel
6 Electronic regulator
7 Circulation pump

SAF_5523451_09
8
MACHINE DESCRIPTION
SAF is the new system that combines the functions of inertial accu-
mulation and boiler for instant domestic hot water production, in a
single integrated product designed to receive heat from any source
type.
All the system components: carbon steel thermo-accumulator; plate
inverter and plate heat exchangers for instant D.H.W. production,
variable ow rate high eciency pump are contained within a single
unit for easy installation even in conned spaces.
The range includes seven dierent models that dier in their ther-
mal storage capacity: 200, 300 or 500 l.
SAF is available in three versions, ideal for new buildings, renova-
tions and existing buildings to more eectively respond to the dif-
ferent needs of users:
SAF°, thermal buer powered by a single energy source, inte-
grated plate heat exchangers for instantaneous production of
DHW, high eciency circulator inverter and control electronics
adjustment.
SAF T, this version is equipped with a coil immersed in the stor-
age for the integration of an auxiliary heat source (boiler/re-
place).
SAF S, this version is set up for the use and the complete man-
agement of an additional source (solar, pellet boilers, etc). In
addition to the specially-designed extra coil, the system also
includes a circulator dedicated to the supplementary source,
along with control software designed to manage it.
SAF INTEGRATION WITH AERMEC HEAT PUMPS AND COMPATIBILITY WITH OTHER ACCESSORIES
(1) Range designed for the management domestic hot water: AER485P1 and VMF-E5 accessories not required
* To be installed on board of the heat pump
Heat pumps Sizes Vers. note SAF MOD485K MODU485-BL* VMF-E5 VTV160 KRX-SAF
ANL 020-202 H • • • • • •
ANLI 101 All (1) • • • • • •
ANK 020-150 All ••••••
NRK 090-150 All ••••••
CL 025-200 H • • • • • •
ANKI 020-080 All (1) • - - - • •
WRL 026-161 H (1)
• - - - • •
WRL 026-161 HT (1) • - - - - •
ACCESSORIES
• VTV160: 3-way diverter sector valve, complete with 2-point
actuator (Kvs = 16).
• MOD485K: RS-485 interface for supervision systems with
MODBUS protocol.
• MODU-485BL: RS-485 interface for supervision systems with
MODBUS protocol.
• VMF-E5: recessed panel with backlit graphic
LCD display and capacitive keypad, for centralised
command/control of a complete hydronic system.
• KRX-SAF: Supplementary resistance with 230V/1/50 Hz 1200W
regulation thermostat
• COMPATIBILITY WITH VMF SYSTEM
For further information on system, refer to specic documenta-
tion.

SAF_5523451_09 9
MAIN MACHINE COMPONENTS
COMPONENTS OF THE VARIOUS VERSIONS
A. SAF°
B. SAF T
C. SAF S
1. Flow Switch
2. DHW heat exchanger
3. Primary circuit pump
4. Manual air vent
5. Electric control board
6. Integration coil (solar, replace, boiler)
7. Solar circuit pump
11
3
3
3
22 44 55
5
6
7
44 2
1
A B
C

SAF_5523451_09
10
RECEPTION
PRELIMINARY WARNINGS
Complaints must be made within 8 days of receipt; reports after
this date are invalid.
Interpose protections and spacers to prevent damage to the
unit.
Do not place any objects on top of the package.
Remove the packaging only when the equipment is in installa-
tion position.
Dispose of packaging parts responsibly and do not leave them
within the reach of children as they are potential sources of dan-
ger; dispose of the packaging in accordance with the regulations
in force in the country.
The pallet supplied with the machine is not intended for other
uses and must be disposed of according to the regulations in
force in the country.
CHECKING ON ARRIVAL
Before accepting the delivery, make sure:
– The unit has not been damaged during transport
– The delivered equipment corresponds to what is indicated on
the transport document by comparing the data with Packag-
ing Plate '1'.
In case of damage or anomalies:
– Note the damage on the transport document immediately
and write: "Received with obvious loss/damage due to trans-
port".
– Dispute via fax and registered mail with return receipt to the
carrier or supplier.
HANDLING WITH PACKAGING
The equipment is supplied on wooden pallets protected by card-
board packaging.
Lifting with forks
Insert the forks from the side so as not to damage the product.
Lifting with crane
Position the lifting straps as shown in the gure.
Use spacers to prevent damage to the unit.
REMOVING THE PACKAGING
Cut the xing straps.
Remove the cardboard packaging, lifting it upwards.
Remove any protective inserts.
Remove the plastic wrap around the machine.
1. Packaging plate
1

SAF_5523451_09 11
SUPPLY
Included in the supply are:
1. Machine instructions manual.
2. CE DECLARATION.
3. Threaded ttings for handling.
Keep the manual in a dry place, in order to prevent deterioration,
for at least 10 years for any further reference.
REMOVING FROM THE PALLET
Remove the three screws from support feet.
If necessary, raise the tank insulating material slightly.
Screw the two threaded ttings supplied in the sleeves posi-
tioned higher.
Handle using means suitable for the weight of the equipment.
The maximum liftable weight per person is 25 kg.
ACCESS TO INNER PARTS
Raise the cover by about 15 cm, taking care not to tear the con-
nection wiring between the card and the unit.
Disconnect the connection cable connector from the control
panel.
Lift the cover up fully to remove it, still being careful of the parts
underneath it.
1
2
3
1. Threaded tting
1
1. Control panel
2. Connection cable
1
2

SAF_5523451_09
12
INSTALLATION
PRELIMINARY WARNINGS
For detailed information (dimensions, weights, technical speci-
cations, etc) please refer to the information chapter.
The location, hydraulic and electrical system must be estab-
lished by the designer and should take into account both the
purely technical needs of any local laws in force and of specic
authorisations.
Ensure that the equipment corresponds with the system re-
quirements.
Make sure the equipment is installed protected from the ele-
ments in clean, dry premises.
Meet the technical spaces shown in this manual to ensure prop-
er access for machine maintenance.
CHECKING OPERATIVE SPACES
The installation must allow specialised, authorised personnel to
service the machine easily, respecting both the safety distances
between units and other equipment as well as the technical
spaces indicated in the table.
H1 L1 L2 W1 W2
400 500 200 300 300
POSITIONING UNITS
Place the unit on a perfectly level supporting surface.
H1
L2
L1 W2
W1

SAF_5523451_09 13
HYDRAULIC CONNECTIONS
PRELIMINARY WARNINGS
For detailed information (dimensions, weights, technical speci-
cations, etc) please refer to the information chapter.
Install an input lter (under penalty of voiding the warranty.)
The lter must be sized to ensure the ow rates necessary for the
equipment.
In case of impurities in the water, periodically service the lter.
Install both input and outlet shut-o valves.
Provide a tap to drain the tank.
Make sure that the weight of the pipes does not bear on the
structure of the machine.
INTERNAL CIRCUIT DIAGRAMS
SAF
1. owmeter with integrated temperature sensor
2. DHW heat exchanger
3. Manual air vent
4. Primary pump
1
2
3
4
DHW USER SIDE
TECHNICAL WATER SIDE
STORAGE

SAF_5523451_09
14
SAF S
1. owmeter with integrated temperature sensor
2. DHW heat exchanger
3. Manual air vent
4. Primary pump
5. Solar pump
6. Solar coil
1
2
3
4
5
3
6
DHW
USER
SIDE
DHW USER
SIDE
SIDE
SOLAR
INTEGRATION
SIDE
SOLAR
INTEGRATION
TECHNICAL
WATER
SIDE
STORAGE
TECHNICAL
WATER SIDE
STORAGE
SAF T
1. owmeter with integrated temperature sensor
2. Manual air vent
3. DHW heat exchanger
4. Primary pump
5. Solar exchanger
1
2
3
4
2
5

SAF_5523451_09 15
BASIC CONNECTION DIAGRAMS
Example of system with SAF°
A. From the heat pump
B. To the heat pump
C. To the DHW distribution system
1. Y-Filter
2. Manometer
3. Safety valve
4. Cut-o valve
5. SAF
6. Circulation pump
7. Expansion vessel
Example of system with integration from replace or boiler for SAF T
A. From the heat pump
B. To the heat pump
C. To the DHW distribution system
1. Y-Filter
2. Manometer
3. Safety valve
4. Cut-o valve
5. SAF T
6. Circulation pump
7. Stove or replace
8. Expansion vessel
9. Filling valve
10. Drain tap
NOT PROVIDED
NOT PROVIDED NOT PROVIDED
NOT PROVIDED
1
2
A
B
C
34
5
4
8
7
6
A
1
2
34
5
4
4
2
7
6
6
3
8
9
9
10
4
8
B
C
10

SAF_5523451_09
16
Example of system with SAF_S and SAF_T integration
A. From the heat pump
B. To the heat pump
C. To the DHW distribution system
1. Y-Filter
2. Manometer
3. Safety valve
4. Cut-o valve
5. SAF T
6. Low-temperature system mixer
7. Air vent
8. solar collector
9. Drain tap
10. Expansion vessel
11. Filling valve
Example of system with solar integration with SAF S
A. From the heat pump
B. To the heat pump
C. To the DHW distribution system
1. Y-Filter
2. Manometer
3. Safety valve
4. Cut-o valve
5. SAF S
6. Air vent
7. Solar collector
8. Circulation pump
9. Expansion vessel
10. Filling valve
11. Drain tap
NOT PROVIDED
NOT PROVIDED
NOT PROVIDED
NOT PROVIDED
A
B
C
1
2
3
3
5
4
4
4
6
8
10
119
106
2
7
4
9
11
4
4
2
1
3
10
11
11
4
9
8
B
A
C
10
4
9
2
7
6
3
5

SAF_5523451_09 17
CONNECTION
Remove the protection caps from the connections.
Connect the pipes to the connections positioned on the unit
based on the model (see the chapter on 9.3 Dimensions p. 16).
To seal, we recommended using hemp and green paste.
FILLING THE SYSTEM
Before carrying out any operations, make sure that the master
switch is turned o.
Make sure the drain cocks are closed
Open the shut-o valves in the hydraulic system.
Begin lling.
DRAINING THE SYSTEM
Before emptying, make sure the shut-o valves are closed. Open the drain cock provided on the system.
Quantity of water produced in l / m at dierent storage temperatures and dierent withdrawal temperatures
A T out 40 °C
B T out 42 °C
C T out 45 °C
D T out 48 °C
Primary inlet temperature °C
Available DHW ow rate l/m
A B C D
DHW ow rate can be delivered based on storage temperature in storage and dierent withdrawal temperatures (settable as setpoint for
domestic hot water).
• For example, in the condition in which the storage temperature = 52 ° C
• If the DHW temperature is 45 ° C, then the SAF unit guarantees a ow rate of about 14 l / min
• If the DHW temperature is 42 ° C, then the SAF unit guarantees a ow rate of about 26 l / min

SAF_5523451_09
18
ELECTRIC CONNECTIONS
PRELIMINARY WARNINGS
Ensure supply voltage is correct (see identication plate applied
on the equipment); incorrect voltage would irreparably under-
mine the main equipment components.
Respect the connection indications of the phase, neutral and
earth wires.
Install a suitable protective power cut-o device with delayed
characteristic curve with contact openings of at least 3 mm and
with an adequate breaking capacity and dierential protection.
An ecient earth connection is mandatory; the manufacturer
cannot be responsible for damage caused by a lack of said con-
nection.
The power supply of the equipment must have a value between
± 10% of the value shown on the feature plate. If this is not re-
spected, you must contact your electrical service provider.
Use cables that comply with the standards in force in various
countries.
POWER SUPPLY CONNECTION
The equipment is supplied with a plug to be inserted into a
socket.
If necessary you can extend the cable.
In this case:
Use an approved extension cord that is adequate to the equip-
ment absorption.
AUXILIARY CONNECTIONS
For the auxiliary connections you must access the terminal board.
Remove the top cover (see chapter 2.7Access to inner parts p.
17)
Unscrew the locking screws.
Open the electrical panel door.
Insert the connection cables into the same hole used for the
power cable.
Next:
Insert the cables into the cable guides on the electrical panel.
Connect to the terminal board.
Refer to the supplied wiring diagrams for connections to the
heat pump
1. Power cable
1
1. Control panel connection cable
2. Electronic controller
3. Power cable
4. 230 V, 5x20 T, 3.15 A Auxiliary fuse
5. Auxiliary connection input
6. Auxiliary connection terminal board
7. Resistance kit connection cable input
Cable length = 1.5 m
2
5
6
3
4
7
1

SAF_5523451_09 19
AUXILIARY CONNECTION TERMINAL BOARD
12 34510 11 12 13 14 15
BT2 BT3
C
VTV160
SA4
NO NC
KRX-SAF
(230Vac)
NERO / BLACK BLU / BLUE
BLU BLUE
MARRONE
MARRONE / BROWN
BROWN
GRIGIO / GREY
NERO / BLACK
BLU / BLUE
Auxiliary connection Corresponding terminals
BT2 Probe lower accumulation (only for versions saf "s" and "t") 2-5 Use a cable with minimum section of 0.5 mm up to 50 m and
of 1 mm up to 100 m for the connection.
BT3 probe solar collector (for saf version "s" only) 8-9
Use a cable with minimum section of 0.75 mm for the con-
nection To control a greater load, interface with a relay and
use a cable with a suitable section.
SA4 clean contact (not in tension) to the heat pump enable
VTV160 3-way diverter valve (vtv accessory) 10-11-12 Use a cable with minimum section of 0.75 mm for the con-
nection
KRX-SAF Resistance kit Integration Control (KRX-saf accessory). 13-14-15 Kit equipped with pre-wired, measured cables.

SAF_5523451_09
20
STARTUP
PRELIMINARY WARNINGS
Check the availability of diagrams and manuals of the installed
machine.
Be sure that the machine is placed on a perfectly level support-
ing surface.
Check for anti-vibration joints on they hydraulic piping between
equipment and system.
Make sure all of the hydraulic circuit shut-o valves are open.
Make sure the hydraulic plant has been lled and the air has
been bled.
Make sure the electrical connections have been made according
to the standards in force in that country, including grounding.
Make sure that the voltage is within the tolerance limits (± 10%).
FUNCTIONING FEATURES
DHW set-point:
The domestic hot water Set Point load is dened at rst start-up and
then can be modied as needed.
Example: Set Point = 50°C.
Heat generator set point
Example: Set Point = 50° C, hysteresis 5° C.
– If the water temperature in the tank is less than 45° C, the gen-
erator will switch on.
– If the water temperature is greater than 50° C, the generator
will switch o.
If the unit power supply is restored after a temporary interruption,
the set mode will be kept in the memory.
CONTROL PANEL
00/00/00 00:00P0
FFO/NOOPERATION
MODE DOMESTIC HOT WATER
ON/OFFUNIT
Display
1st line
Flashing cursor
Date 00/00/00
P0 Page number
2nd line Operation ON machine switched on
OFF machine switched o
3rd line Mode Domestic hot water Domestic water supply
4th line Unit
On
O
Key functions
Alarm Symbol It lights up when there is an alarm state. Press the button to display the alarm type.
Press again after resolving the cause to reset the alarm.
Programming Symbol Press the button to access the programming or set point consultation pages.
Esc Symbol Press the key to exit the programming pages.
Up arrow key Moves the ashing cursor to the previous page or increases the value to edit.
Enter Key To conrm and access the parameter to edit.
Down arrow key Moves the ashing cursor to the next page or decreases the value to edit.