Hydraulic Connections - Ariston 801 Instructions For Installation, Use, Maintenance

HYDRAULIC CONNECTIONS

Before using the product, we recommend filling its tank with water
and draining it completely so as to remove the residual impurities.
Connect the water heater inlet and outlet to pipes or pipe fittings
that can withstand the operating pressure and temperature of the
hot water, which may reach 75°C. It is not advisable to use materials
that cannot withstand such temperatures. The dielectric union fitting
with joint (supplied with the product) must be applied to
and cold water pipes, prior to performing the connection.
The appliance must not operate with water hardness levels below
12°F; on the other hand (>45°F), it is advisable to use a suitably cali-
brated and monitored water softener in the event of particularly hard
water; in this event, the residual hardness must not fall below 15°F.
Screw a "T" fitting identified by a blue collar onto the appliance's
water inlet pipe.
It is mandatory to screw on said fitting a cock for draining the product
with a tool on one side, and a suitable device against overpressure
on the other side.
SAFETY GROUP COMPLIES WITH THE EUROPEAN STANDARD EN 1487
Certain countries may require the use of specific safety devices (see
next figure for the European Community countries), in line with local
legal requirements; it is the responsibility of the qualified installer in
charge of installing the product to assess the correctness and suita-
bility of the safety device used.
The codes for these accessories are:
Hydraulic safety assembly 1/2" code 877084
(for products with 1/2" diameter inlet pipes)
Hydraulic safety assembly 3/4" code 877085
(for products with 3/4" diameter inlet pipes)
Trap 1" code 877086
It is forbidden to fit any shut-off device (valves, stopcocks, etc.) be-
tween the safety device and the water heater itself. The device dis-
charge outlet must be connected to a discharge pipe with a diameter
at least equal to that used to connect the appliance (1/2"), through a
siphon ensuring a minimum 20 mm air distance, with the possibility
of visually checking it.
Use a flexible pipe to connect the safety assembly inlet to the cold
water system pipe, using a shut-off valve if necessary. Additionally, a
water discharge pipe must be fitted to the outlet in case the drainage
tap is opened.
When tightening the safety assembly, do not force it into its stop po-
sition and avoid tampering with it.
If the mains pressure is close to the calibrated valve values, a pres-
sure reducer must be installed as far from the appliance as possible.
Should you wish to install the mixer units (taps or shower), drain any
impurities from the pipes as they could cause damage.
WARNING! It is advisable to carefully wash the system pipes in or-
der to remove any residues of screw thread, welding or dirt which
may hamper the correct operation of the appliance.
the hot
A Hot water outlet pipe 1/2"
B Cold water inlet pipe 1/2"
C Safety assembly
D Shut-off cock
E Dielectric fitting
F Condensate drain
LEGIONELLA BACTERIA FUNCTION
Legionella are small rod shaped bacteria which are a natural constit-
uent of all fresh waters.
Legionaries' disease is a serious pneumonia infection caused by in-
haling the bacteria Legionella pneumophilia or other Legionella spe-
cies. This bacterium is frequently found in domestic, hotel and other
water systems and in water used for air conditioning or air cooling
system. Hence the main intervention against the condition is preven-
tion, through control of the organism in water systems.
The European standard CEN/TR 16355 gives recommendations for
good practice concerning the prevention of Legionella growth in
drinking water installations but existing national regulations remain
in force. This storage water heater is supplied with the thermal disin-
fection cycle deactivated by default. If the anti-legionella function is
activated (parameter P2 ON), each time the product is turned on and
every 30 days, the system carries out a thermal disinfection cycle
raising the temperature of the boiler to 60°C.
Warning: when this software has been carrying out the thermal
disinfection treatment, water temperature can cause severe burns
instantly. Children, disabled and elderly are at highest risk of being
scalded. Feel water before bathing or showering.
E
D
A
C B
F
35 / EN