Hydraulic Connection - Ariston 120P CA Notice D'installation Et D'entretien

EN

2 - HYDRAULIC CONNECTION

2.1 Connection to the water distribution mains must be realised using a 3/
4"G tube. The cold water inlet is on the right whereas the outlet is on
the left (facing the appliance).
2.2 The appliance must mount the relief-safety hydraulic valve (provided
with every appliance) on to the water inlet piping. The valve must not
be tampered with.
2.3 Run the water for some time, ensuring there are no foreign bodies
inside the piping like metal chippings, sand, cloth and other. Should
such bodies enter the relief-safety hydraulic valve, the functioning would
be jeopardised causing, in some cases, its breaking.
2.4 Ensure that the pressure of the water supply system does not exceed
the value of 8 bar. In case of higher pressure, an excellent quality
pressure reducer must be used, mounted away from the appliance.
In this case, the hydraulic valve must never drip during heating.
Dripping must also be checked when a single direction stop cock is
applied upstream of the valve.
2.5 Avoid the dripping of the valve falls on to the water heater.
Apply the valve as in fig. 3, envisioning a small collection funnel (drip)
connected to the drain.
2.6 D
ISCHARGE
Empty the appliance should this remain inactive in unheated premises,
with environmental temperatures below zero.
Upon installation, envision such eventuality and connect a drain cock
to fitting R (fig. 4).
T
O EMPTY THE WATER HEATER
• switch-off the burner and close the gas supply
• close the shut-off cock upstream of the appliance;
• open the use cocks downstream from the water heater;
• open the drain cock connected to fitting R.
Boiling water may leak during emptying!
3 - CONNECTION TO THE RECIRCULATION
3.1 R
ECIRCULATION
Should the utility plant also include the circuit
for the DHW recirculation, the same fitting R
used for draining can be used.
The circuit at the side schematises the
connection to be carried out in this case.
50
:
ATTENTION!
Nota:
lo svuotamento completo si realizza
per sifonaggio. Collegare un tubo
flessibile al rubinetto di scarico come
riportato in fig. 2.
unidirectional valve
valvola unidirezionale
4
T U
utilizzazione
use
2
20 cm.
3
E
valvola di
safety
valve sicurezza
alimentazione
supply
S
R
recirculation
ricircolazione
T
scarico
drain