DOMUSA TEKNIK SANIT 300 User manual

INSTALLATION AND OPERATING INSTRUCTIONS
SANIT 300
SANIT 500
SANIT 750
SANIT 1000
SANIT 1000 SBH
ER-0170/1996
CGM-04/392

Thank you for choosing a DOMUSA TEKNIK product. From the range of
DOMUSA TEKNIK products you have chosen the Sanit model, a stainless
steel hot water tank for producing domestichotwater(DHW)bymeansof
a coil, which together with a DOMUSA TEKNIK heating boiler will provide
the ideal level of comfort for your home, provided it is accompanied by a
suitablehydraulicinstallation.
This manual forms an essential part of the product and it must be given to
the user. Read the warnings and recommendations in the manual
carefully, as they contain important information on the safety, use and
maintenanceoftheinstallation.
These hot water tanks are to be installed by skilled personnel only, in
accordance with the legislation in force and following the manufacturer’s
instructions.
The start-up of these hot water tanks and any maintenance operations
must only be carried out by DOMUSA TEKNIK’s Authorised Technical
AssistanceServices.
Incorrect installation of these hot water tanks could result in damage to
people, animals or property, and the manufacturer will hold no liability in
suchcases.

1
CONTENTS Page
1 PRECAUTIONS......................................................................................................................................................................................2
1.1FROSTPRECAUTIONS................................................................................................................................................................................................2
2 LIST OF COMPONENTS.....................................................................................................................................................................3
3 CONTROL COMPONENTS................................................................................................................................................................8
4 INSTALLATION INSTRUCTIONS......................................................................................................................................................9
4.1CONNECTION............................................................................................................................................................................................................9
4.2EQUIPMENT:..............................................................................................................................................................................................................9
4.3HYDRAULICINSTALLATION....................................................................................................................................................................................10
4.4LOCATION..............................................................................................................................................................................................................10
4.5EQUIPMENT/OPTIONS..........................................................................................................................................................................................11
4.5.1CATHODIC PROTECTION............................................................................................................................................................................11
4.5.2ELECTRICAL ELEMENT.................................................................................................................................................................................11
4.5.318L DHW EXPANSION TANK.....................................................................................................................................................................11
4.5.41” DIELECTRIC SLEEVES..............................................................................................................................................................................12
4.5.5DHW SAFETY VALVE....................................................................................................................................................................................12
5 OPERATION.........................................................................................................................................................................................13
6 DIAGRAM AND ELECTRICAL CONNECTION.............................................................................................................................13
6.1ELECTRICALDIAGRAM............................................................................................................................................................................................13
6.2ELECTRICALCONNECTIONTOTHEBOILER.............................................................................................................................................................14
6.3DIAGRAMSFOR CONNECTION TO DOMUSATEKNIKBOILERS:.........................................................................................................................14
6.4INSTRUCTIONS FOR ELECTRICAL CONNECTION OF THE SANITSTORAGE HEATER TO THE FOLLOWING BOILERS:................................................14
7 MAINTENANCE..................................................................................................................................................................................16
8 START-UP.............................................................................................................................................................................................16
9 DELIVERY OF THE INSTALLATION...............................................................................................................................................16
10 DRAINING THE TANK....................................................................................................................................................................17
11 SPARES LIST .....................................................................................................................................................................................18
11.1HOTWATERTANK................................................................................................................................................................................................18
ELECTRICALBOARD ......................................................................................................................................................................................................23
12 DIAGRAMS AND MEASUREMENTS...........................................................................................................................................24
13 TECHNICAL CHARACTERISTICS.................................................................................................................................................26
14 GUARANTEE CONDITIONS..........................................................................................................................................................27

Sanit
2
1PRECAUTIONS
Sanit hot water tanks must be installed by qualified staffin compliance with applicable regulations.
Any work must be carried out by the official Technical Assistance Service, as any changes to its
configuration could cause functioning errors and could damage the system and its surrounding
environment.
This appliance can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack o experience and knowledge if they have been given
supervision or instruction concerning use if the appliance in a safe way and understand th hazards
involve. Children shall not play with the appliance. Cleaning and user maintenance shall not be
madebychildrenwithoutsupervision.
The electrical main power supply connection must respect the current legislation, making possible
a complete disconnection of the tank, in order to make any maintenance operation safely. Look
"Diagramandelectricalconnection"chapter.
1.1 Frost precautions
When there is danger of frost, and particularly in areas with very low temperatures, precautions
will need to be taken to prevent damage to the installation. It is recommendable to add anti-
freeze to the water in the primary circuit of the tank. The anti-freeze used must be compatible
with public health regulations and it must not be toxic. DOMUSA TEKNIK recommends the use of
propyleneglycol,consultingtheproductmanufacturerbeforeuse.
If theinstallationistobe out of useforalong period, drain all the water from the tank.

3
2LISTOFCOMPONENTS
SANIT300
SS
EP
V
SP
21
3
ES
TR
R
1. Frontcover.
2. Bridgecover.
3. Controlpanel.
SP: Primaryoutlet.
EP: Primary inlet.
ES: Domesticcoldwaterinlet.
SS: Domestichotwateroutlet.
TR: Resistancesocket.
R: Recirculationintake.
V: Drainage.

Sanit
4
SANIT500
SS
EP
V
SP
12
3
R
TR
ES
1. Frontcover.
2. Bridgecover.
3. Controlpanel.
SP: Primaryoutlet.
EP: Primary inlet.
ES: Domesticcoldwaterinlet.
SS: Domestichotwateroutlet.
TR: Resistancesocket.
R: Recirculationintake.
V: Drainage.

5
SANIT750
1 2
3
TR
ES
SS
R
EP
SP
V
1. Frontcover.
2. Bridgecover.
3. Controlpanel.
SP: Primaryoutlet.
EP: Primary inlet.
ES: Domesticcoldwaterinlet.
SS: Domestichotwateroutlet.
TR: Resistancesocket.
R: Recirculationintake.
V: Drainage.

Sanit
6
SANIT 1000
3
1 2
EP
SP
V
SS
TR
R
ES
1.-Frontcover.
2.-Bridgecover.
3.-Controlpanel.
4.- Lateralcover..
SP:Primaryoutlet.
EP:Primaryinlet.
ES:Domesticcoldwaterinlet.
SS:Domestichotwateroutlet.
TR:Resistancesocket.
R:Recirculationintake.
V: Drainage.

7
SANIT 1000 SBH
21
3
EP
V
SP
SS
TR
R
ES
1.-Frontcover.
2.-Bridgecover.
3.-Controlpanel.
SP:Primaryoutlet.
EP:Primaryinlet.
ES:Domesticcoldwaterinlet.
SS:Domestichotwateroutlet.
TR:Resistancesocket.
R:Recirculationintake.
V: Drainage.

Sanit
8
3CONTROLCOMPONENTS
123
1. Adjustment thermostat:
This control is for adjusting the desired
temperature of the hot water stored in the
tank.
2. Element switch:
This is for starting up and stopping the optional
back-upelementofthehotwatertank.
3. Thermometer:
This indicates the temperature of the hot water
storedinthetank.

9
4INSTALLATIONINSTRUCTIONS
The Sanit range of hot water tanks has been specially designed for installation and hydraulic
connectiontoawiderangeofheatingboilers.
4.1 Connection
The diagram below shows an example of the installation of Sanit hot water tanks with a heating
boiler:
4.2 Equipment:
1.- Feedpump.
2.- Non-returnvalve.
3.- Automaticdrainvalve.
4.- Dielectricsleeve.
5.- 0,7MPa(7bar)safetyvalve.
6.- Non-returnvalve.
7.- Shut-offvalve.
8.- Stainlesssteelhotwatertank.
9.- Polyurethaneinsulation.
10.- Resistancesocket.

Sanit
10
4.3 Hydraulic installation
Sanit hot water tanks are prepared to be permanently connected to domestic water supply
network, by means of DHW inlet. The maximum pressure admitted is specified in "Technical
characteristics"chapter.
The hydraulic installation must be made by qualified technicians, in compliance with current
installationregulationsandtakingthefollowingrecommendationsintoaccount:
- The secondary circuit (or domestic water circuit) is to be equipped with a safety valve,
calibratedtoamaximumof0,7MPa(7bar).
-Thesafetyvalveoutletmustalwaysleadtoa drain.
- To avoid continuous leaking from the D.H.W. safety valve, we recommend the installation of a
D.H.W.expansioncell.
- The primary circuit (or heating circuit) for tanks must be provided with a safety valve, calibrated
toamaximumof0,3MPa(3bar).
- After installing the tank, firstly fill and pressurise the secondary circuit (domestic water circuit).
- After doing so, proceed to fill the primary circuit. Ensure the secondary circuit is full before
filling the primary circuit.
-Placedielectricsleevesonthesecondarycircuitconnections.
- If the cold water pressure is higher than the pressure the appliance is designed for, a pressure
reducershouldbeinstalled,calibratedtonohigherthanthe design pressure.
- To prevent heat loss through the hot water pipes in accumulation systems, an anti-thermal
siphon must be installed at the hot water tank outlet. The hot water pipe must be insulated (at
leastuptotheanti-thermalsiphon).
-Acopperreturncircuitshouldnotbeused.
- When the chlorine concentration in the Domestic Water exceeds 250 mg/dm3, it is
recommended that anti-corrosion protection should be applied to the inside of the inter-
accumulator so as to avoid its premature deterioration. As an option DOMUSA TEKNIK supplies
electronic cathodic protection that is suitable for the Sanit V inter-accumulator range. To install
it,readcarefullytheassemblyinstructionsthatareprovidedwith the same.
To drain the hot water tank, first drain the primary circuit and then the secondary circuit.
4.4 Location
The hot water tank must not beinstalled in a location exposed to the elements.
To optimise energy use, the hot water tank should be installed as close as possible to the hot water
generator.
When choosing a location, take into account the weight of the full hot water tank, and make sure it
isprotectedagainstfrost.Thepipesshouldbelaggedin compliance with heating regulations.
For wall-mounted and horizontal installations, ensure thetypeofwalltowhichthehot water tank is
fixed can withstand the weight of the tank when full, and choose the most suitable fixing system
dependingonthewallinquestion.

11
4.5 Equipment / options
Although Sanit units are equipped with all the necessary components for functioning, DOMUSA
TEKNIKoffersseveraloptionalcomponentsforcasesinwhichspecialfeaturesare required.
4.5.1 Cathodic protection
If the chloride concentration in the domestic
hot water is higher than 250 mg/cm3, we
recommend installing a cathodic protection
inside the storage heater to avoid premature
wear to the hot water tank. DOMUSA TEKNIK
optionally supplies a suitable electronic
cathodic protection for its range of storage
heaters. To install it, carefully read the assembly
instructions supplied with the cathodic
protection.
Figura 1
4.5.2 Electrical element
All Sanit hot water tanks have a socket for
connecting an electrical element. DOMUSA
TEKNIK optionally supplies three elements, of
1.5, 2.5 and 3.5 kW. To install them, carefully
read the assembly instructions supplied with
theelements.
Figura 2
4.5.3 18L DHW expansion tank.
Due to the increase in the temperature of the
hot water stored, the pressure in the hot water
tank increases, and DOMUSA TEKNIK therefore
optionally offers this DHW compensation tank
for the Sanit 300, 500, 750 and 1000 models. To
install the tank, carefully read the assembly
instructionssuppliedwithit.
Figura 3

Sanit
12
4.5.4 1” dielectric sleeves
When the installation material is different from
the hot water tank socket material, a galvanic
couple may form, deteriorating the hot water
tank. To prevent this from happening,
DOMUSA TEKNIK recommends fitting
dielectric sleeves to the secondary circuit
connections if the main piping is not made of
stainless steel. To install the dielectric sleeves,
carefully read the assembly instructions
suppliedwiththem.
Figura 4
4.5.5 DHW safety valve
All Sanit hot water tanks are designed to work
at a maximum DHW pressure of 0,7 MPa (7 bar).
To prevent this pressure from being exceeded,
DOMUSA TEKNIK recommends fitting a safety
valve to the DHW circuit, calibrated to a
maximum of 0,7 MPa (7 bar). The safety valve
will always discharge into a drain. To install the
valve, carefully read the assembly instructions
suppliedwithit.
Figura 5

13
5OPERATION
The Sanit range of hot water tanks is specially designed for use with a wide range of solar power
elements,heatpumpsandboilerspoweredbyanytypeof fuel.
If the tank is connected to a DOMUSA TEKNIK brand heating boiler, the boiler will be equipped with a
summerorwinterpositionswitch,whichisusedtochoose between:
- Summer position ☼:inthispositiontheboilerwillonlyproducehotwaterasneeded.Theburner
and feed pump of the storage heater (summer pump) willbeswitchedonuntilthehotwaterstored
reaches the temperature set on the hot water thermostat of the storage heater (2) . When this
temperatureisreached,theburnerandthesummerpumpwill switch off.
- Winter position :in this position the boiler will produce hot water as needed and will also cater
fortheheatinginstallation,givingprioritytohotwaterproduction.
6DIAGRAMANDELECTRICALCONNECTION
The Sanitrange of hot water tanks is especiallydesignedforeasyelectricalconnection to a wide range
of heating boilers. The special design of its electrical connections enables the boiler/hot water tank
unit to provide heating and domestic hot water with automatic functioning, incorporating a hot water
priorityfunctiontothejointoperationofthetwoappliances.
When installing the supply cable, take the hot water tank element into account. Different tanks may
havedifferentelements,andadifferentcablediameterisrecommended for each type:
Element Cablediameter
1500w 1.5mm2
2500w 2.5mm2
3500w 4mm2
6.1 Electrical diagram
The electrical connection of Sanit hot water tank must be made by qualified staff, and any
modificationsmayonlybemadebytheofficialtechnicalassistance service.
7
R: Máx. 3.500 W
Orange
White
Red
Brown
Blue
Grey
Black
TACS
2
5
O/I
Blue
Black
Brown
T tube for
DHW
conection to
boiler
Ph
N
~220/230 V
1
4
21
6
5
4
3
2
1
E: Supportelement,maximum3500W.
O/I: Supportelementswitch.
T
DHW:Domestichotwaterthermostat.

Sanit
14
6.2 Electrical connection to the boiler
The electrical connection between Sanit hot water tanks and DOMUSA TEKNIK heating boilers is
madebysimplyconnectingthetubeshownintheelectrical diagram, i.e. the TDHW tube.
Connect the tubeto the side of thehot water tank as shownintheelectricaldiagramin section 5.1.
On the side of the boiler, connect the supply tube of the feed pump (1) mounted on the installation
to the terminals bearing the letters "BV" (Summer Pump) according to the electrical diagram for
each model of boiler (see the boiler instructions manual). To connect the TDHW tube, first remove
the bridges from the boiler connector block and then connect the TDHW tube as shown in the
figuresbelow,dependingontheboilermodel.
6.3 Diagrams for connection to DOMUSA TEKNIK boilers:
11 1 23
Black Blue Brown
TDHW tube for
connection to
boiler
SIRENACAL FD
13 14 15
Black Blue Brown
TDHW tube for
connection to
boiler
DONATEC /ECOGAS /
ECOGAS V
12 13 14 15
Black Blue Brown
TDHW tube for
connection to
boiler
JAKAFD
6.4 Instructions for electrical connection of the SANIT storage heater to the following boilers:
EvolutionEVFC
EvolutionEVAC SirenaCale SirenaCalVe

15
The correct process for the electrical connection of the SANIT hot water storage heater to these
boilersisasfollows:
- Connect the hot water temperature sensor (supplied optionally) to the sensor connector block
J3 on the boiler (terminals 13 and 14). To do this, first remove the element (Ra) supplied with it
(see"ConnectionDiagram").
- Remove the thermostat bulb from the bulb-holder on the storage heater, and insert the
temperaturesensorbulbinitsplace.
- Connect the storage heater feed pump to the boiler supply connector block J2 (terminals 6 and
7)(seethe"ConnectionDiagram").
For a correct hydraulic installation, carefully follow the assembly and connection instructions
suppliedwiththestorageheater.
1
356
7
89
10
11 4
J1J2
1615141312
J3
J5
J4
NF
bc7
BC Q
Sc
TA
E20
Blue
Black
Blue
Blue
2
220 V
J6
1 2 3
RaRr
BV
Blue
M
Blue
RA
J3

Sanit
16
7MAINTENANCE
To keep the boiler/hot water tank unit in perfect working order, both appliances should by inspected
yearlybyDOMUSA TEKNIK authorisedtechnicians.Inparticular,thefollowingarerecommended:
- The inside of the hot water tank should be thoroughly cleaned once a year. The primary circuit
shouldbedrainedfirst,beforedrainingthehotwatertank.
- If the hot water tank includes electronic cathode protection, this should be inspected once a year
toensureitisfunctioningcorrectly.
-Thepressureoftheprimaryinstallationmustbekept between 0.1 and 0.15 MPa (1 and 1.5 bar).
-Makesurethesafetyvalveandthedrainvalve are working correctly.
- If the installation has been out of use for a long time, check the hot water tank feed pump is
working correctly. To do this, remove the front cover from the pump, leaving the pump shaft
visible. If the shaft does not turn, disconnect the pump using the pump switch. Gently press the
shaft down with a suitably sized screwdriver and turn it in both directions. Then connect the
switchagain.
It is recommended for the user to periodically check the pressure and temperature levels of the hot
watertankandthestateofthevalves,connectionsand accessories.
8START-UP
For the guarantee to be valid, the hot water tank must be started up by an Official DOMUSA TEKNIK
Technical Assistance Service.Beforestartingitup,thefollowingmustbeensured:
-Theelectricalconnectionofthehotwatertankis correctly made.
-Theinstallationisfilledwithwaterandthedraining has been done correctly.
-Thedrainvalveisworkingproperly.
- The primary flow and return connections and the hot and cold water connections have been
correctlymade.
- The thermostat has been properly adjusted and theelectric cabling complies with regulations.
-Therearenoleaksfromthesplicesandconnections.
9DELIVERYOFTHEINSTALLATION
After the initial start-up of the appliance, the Technical Assistance Service will explain to the user how
thehotwatertankworks,makinganyobservationstheyconsider relevant.
It is the responsibility of the installer to explain to the user the functioning of any control devices
belongingtotheinstallationandnotsuppliedwiththehot water tank.

17
10 DRAININGTHETANK
To drain the tank Sanit 300/500/750/1000, remove the brass plug, then connect a hose to the drain
socketonthebottonofthetank.
Checkthehoseiscorrectlyconnectedtothetankdrain socket.
Run the hose to a nearby floor drain. This must be at a lower level than the tank. Begin the suction
processsothatthewaterbeginstoflow,andwait until it drains completely.
SANIT 300 / 500 /750 / 1000

Sanit
18
11 SPARESLIST
11.1 Hot water tank
SANIT300
1
2
1
2
3
5
6
7
8
9
10
11
13
12
1
2
14
15
12413
1
Pos. Code Name
1 CFER000085 ¾” black embellisher
2 CFER000082 ¾” tapered plug
3 GELESAN008 Electrical board
4 CFER000086 1” black embellisher
5 SCON000090 Elliptical plug
6 Bridge
7 M8 washer
8 M8 nut
Pos. Code Name
9 CACU000038 Bridge cover
10 CFOL000037 Brass plug
11 MVAR010027 Seal
12 CFER000008 1” red plug
13 CFER000083 Seal
14 CFER000087 1 ¼” black embellisher
15 CFOL000020 1 ¼” chromed plug