Ariston PRO1 ECO Gebrauch- Und Montageanweisung, Wartung Seite 16

When installing the safety device, do not tighten it fully down, and do not tamper with its settings.
It is necessary to connect the drain, which must always be left exposed to the atmosphere, with a drain-
age pipe that is installed sloping downwards in a place with no ice. If the network pressure is closed
to the calibrated valve pressure, it will be necessary to apply a pressure reducer far away from the
appliance. To avoid any possible damage to the mixer units (taps or shower) it is necessary to drain any
impurities from the pipes
ELECTRICAL CONNECTION
It is mandatory, before installing the appliance, to perform an accurate control of the electrical sys-
tem by verifying compliance with current safety standards, which is adequate for the maximum pow-
er absorbed by the water heater (refer to the data plate) and that the section of the cables for the
electrical connection is suitable and complies with local regulations.
The manufacturer is not liable for damage caused by lack of grounding or anomalous power supply.
Before starting up the appliance, check that the power rating matches that given on the nameplate. The
use of multi-plugs, extensions or adaptors is strictly prohibited. It is strictly forbidden to use the piping
from the plumbing, heating and gas systems for the appliance earthing connection. If the appliance is
supplied with a power supply cable, should the latter need replacing, use a cable featuring the same
characteristics (type H05VV-F 3x1,5 mm
ø 8.5 mm) must be routed into the hole in the back of the appliance and connected to the thermostat
terminals (Fig.4, Rif.M). Finally, lock the power supply cable with the special cable clamp. Use a two-pole
switch conforming with national laws in force (contact gap of at least 3 mm, preferably equipped with fus-
es) to disconnect the appliance's power supply. The appliance must be grounded with a cable (yellow/
green and longer than the phase cable) connected to the terminals Marked
Before starting up the appliance, check that the power rating matches that given on the nameplate. If
the appliance is not supplied with a power supply cable, choose one of the following installation modes:
- Connection to mains with a rigid pipe (if the appliance has no cable clamp); use a cable with a minimum
3x1,5 mm 2
section;
- With a flexible cable (type H05VV-F 3x1,5 mm
cable clamp.
START-UP AND COMMISSIONING
Before powering up the appliance, fill the heater with mains water.
To do so, open the mains cock and the hot water tap until all the air has been vented from the boiler.
Check for water leaks from the flanges, tighten down the bolts not too much, if necessary ( Fig.5, Rif.C) and/or
the rings. Power the appliance by actuating the switch.
MAINTENANCE (FOR QUALIFIED PERSONNEL)
All interventions and maintenance operations must be carried out by qualified personnel(in possession of
qualification required by the regulations in force on the subject).
Before calling your Technical Servicing Centre, check that the fault is not due to lack of water or power
failure
Warning: disconnect the appliance from the mains before conducting any maintenance work.
EMPTYING THE APPLIANCE
The appliance must be emptied if it is to be left unused for a long period and/or in premises subject to frost.
To drain the appliance, proceed as follows:
- Disconnect the appliance from the electricity mains;
- Close the cut-off valve, if installed (fig. 2, Ref. D), or the main household water valve, if not;
- Turn on the hot water tap (wash basin or bathtub);
- Open the drain valve (fig. 2, Ref.B).
16 / EN
2 , 8,5 mm in diameter). The power cable (H05VV-F 3x1.5 mm
2
, 8,5 mm in diameter), if the appliance is supplied with a
(Fig.4, Rif.G).
2