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1.3 CONNECTION UNIT.
V
AC
1.4 HYDRAULIC CONNECTION.
Before making the connections, all of the system
piping must be washed thoroughly to remove
any residues that could compromise the proper
operation of the storage tank. Water connections
must be made in a rational way using the cou-
plings on the storage tank template. The storage
tank safety valve outlet must be connected to a
draining funnel. If this is not the case, the stor-
age tank manufacturer declines any liability in
the event of flooding if the drain valve cuts in.
1.5 ELECTRICAL CONNECTION.
The storage tank has an IPX0D protection rating
for the entire appliance. Electrical safety of the
appliance is reached only when it is correctly con-
nected to an efficient earthing system as specified
by current safety standards.
Attention: Immergas S.p.A. declines any respon-
sibility for damage or physical injury caused by
failure to connect the storage tank to an efficient
earth system or failure to comply with the refer-
ence standards.
Also ensure that the electrical installation cor-
responds to maximum absorbed power specifi-
cations as shown on the storage tank data-plate.
The 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 terminal board (Fig.1-12 part. 17)
present inside the storage tank unit, paying atten-
tion 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 indi-
cated 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.
The power supply cable must be connected to a
230V ±10% / 50Hz mains supply respecting L-N
polarity and earth connection;
must also have a multi-pole circuit breaker with
class III over-voltage category. When replacing
the power supply cable, contact a qualified firm
RU MU
AF
RP MP RC
(e.g. the Authorised After-Sales Technical As-
sistance Service).
For the main power supply to the appliance,
never use adapters, multiple sockets or exten-
sion leads.
Solar collector return probe connection (op-
tional).
Connect the solar collector return probe to pins
8 and 7 on the terminal board present inside the
storage tank unit.
Attention: after 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 find parameter 27
(system configuration);
- press the "i" key for about 2 seconds.
- upon accessing parameter 27, you will find that
configuration 1 is set; use the scrolling keys to
select configuration 2.
- press the "i" key to confirm the selected con-
figuration.
1.6 FILLING THE SYSTEM.
Once the storage tank has been connected, fill
the system via the boiler filling valve. Filling is
performed at low speed to ensure release of air
bubbles in the water via the boiler and central
heating system vents.
Close the filling valve when the boiler manom-
eter pointer indicates approx. 1.2 bar (see boiler
instruction book).
1.7 DOMESTIC HOT WATER STORAGE
TANK UNIT.
The 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. This storage tank
unit, manufactured with stainless steel casing and
bottoms, guarantees long duration through time.
The assembly concepts and welding (T.I.G.) are
, this network
implemented to the minimum detail to ensure
maximum reliability.
The upper inspection flange ensures practical
Key:
V - Electrical connection
AC - 3/4" Domestic hot water outlet
RU - 3/4" return from storage tank
MU - 3/4" flow to storage tank
AF - 3/4" domestic cold water inlet
RP - 3/4" return to solar panels
MP - 3/4" flow from solar panels
RC - 1/2" recirculation (optional)
control of the storage tank unit and the coil heat
exchanger pipe and easy internal cleaning.
The DHW couplings are positioned on the lid
of the flange (cold inlet and hot outlet). The
Magnesium Anode holder cap including the
same, supplied as per standard for the internal
protection of the storage tank from possible cor-
rosion, is found on the side of the storage tank.
IMPORTANT NOTE: have the efficiency of the
storage tank Magnesium Anode checked annu-
ally by a qualified firm. The storage tank unit is
prepared for introduction of the domestic hot
water pump fitting.
1.8 DHW MIXING VALVE.
The thermostatic mixing valve mixes the cold
water with the hot water and via an internal wax
element, sensitive to the temperature, automati-
cally controls the temperature of the mixed water
set by the user.
N.B.: for excellent management of the tempera-
tures, the mixing valve must be set by the installer
at a safety temperature required by the user. The
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).
Any release of the three-way mixing valve. If
after 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.
6
1-2
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