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Ariston STEA-serie Manual

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Picture 11 – Model on base structure
E
E
C
A
B
D
Picture 12 – Model on base structure
3. Water connection
1. The operating pressure is indicated on the data
plate of the water heater (see water heater).
The connection of a water heater to copper
piping must be performed using a dielectric
connection. These dielectric connections are
available as an optional extra or as standard,
depending on the model purchased.
If you only have one dielectric connector, you must
fit it to the hot water outlet!
4. If the water systems have the following
features:
➢ small pipes;
➢ taps with ceramic plates / mixer taps;
a “ram stabilising” device or a domestic hot water
expansion vessel suited to the system must be
installed as close as possible to the taps.
We recommend that a shut-off valve
is installed upstream from the safety
assembly.
See pictures 6, 7, 8, 9, 10, and 12.
A : Hot water / B : Cold water / C : Safety assembly / D : Shut-off valve / E : Dielectric connection
THE WIRING DIAGRAM IS STUK
ONTO THE APPLIANCE: USE IT AS A
REFERENCE GUIDE.
4.2. VERT, HORD, HORB three-phase vertical
model, MT version
Three-phase vertical appliances are already wired
at 400 V THREE-PHASE when they are shipped.
They may be connected at 230 V Three-phase or
230 V SINGLE-PHASE (see scheme of electrical
connections on apparatus).
4.3. STAB MT stable model
The 200-250 & 300 litre stable models are
already wired in 230 V single-phase when they
are shipped. They may be wired at 230 V THREE-
PHASE or 400 V THREE-PHASE (see scheme of
electrical connections on apparatus).
The 500 litre stable model is wired at 400 V
three-phase at the company.
Electrical connection of the appliance should
only be performed using the thermostat
terminals or the terminal board of the
appliance.
ANY DIRECT CONNECTION TO THE
HEATING ELEMENT IS HAZARDOUS
ANS IS STRICTLY PROHIBITED.
4.4. PROfessional TECH (PTEC) and HPC - QUIE
The boiler protection anode is controlled by a
P.C.B. powered at the network current or using a
battery designed for systems operating in day/night
mode, in order to keep the boiler protected during
metsys noitcetorp eht fo noitarepo tcerroC .yad eht
REQUIRES A PERMANENT POWER SUPPLY
(network or batteries). The appliance
cannot, in
fact, be left without a power supply for more than
48 hours.
4. Electrical connection
4.1. Important considerations
2.
!
DTU
Connection with materials synthesis
PER are prohibit: flood risk
To connect the tank on plastic pipe “PER” installa-
tion existent, intercalate on the out-let (hot water)
a copper pipe with minimum longer 50 cm to avoid
any damage.
2.2.d. STAB models on base structures
This appliance is fitted with a base structure
which is fixed to the product while it is still at the
company. Position the appliance on a perfectly flat
and level surface.
installed upstream of the safety assembly.
3. When the input pressure of the network is
greater than 4.5 bar, a pressure reducer must be
… 52 …


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