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23
Assembling the safety and one-way valve
In order to limit the overpressure of the
EGO PRIME
system, it is compulsory to install the
safety and non-return valves supplied as standard components upstream from the collector.
This solution also prevents the system from emptying in the case of a water shortage from the
mains. For the coupling, use the flat ¾’’ gaskets supplied. For ensuring correct operation of the
valve, as well the validity of the warranty of the collector, the aforementioned safety or non-re-
turn valves must never be isolated, obstructed or covered. For the correct positioning please
refer to the installation diagram in the “HYDRAULIC CONNECTION” section.
This component acts as:
- a
SAFETY VALVE
, with opening set at 4.5 ± 0.5 bar;
- a
ONE-WAY VALVE
, to stop the water from returning to the water system.
If you want to install a discharge valve at inflow (recommended), it should be positioned
between the safety valve and the inflow connection.
The safety valve must be installed correctly; if it is not, leaks can occur. No guarantee rights will
be recognised if not installed or if installed correctly.
Assembling the safety unit (an alternative to the safety val-
ve)
For installations in Italy and in countries where a regulation similar to the one established
by Ministerial Circular no. 829571 of 26 March 2003 regarding accumulation water heaters:
“...these devices must be connected to the domestic water system using a hydraulic safety
unit. This unit must include at least one interception tap, a one-way valve, a control device
for the one-way valve, a safety valve, a hydraulic charge interrupting device, all accessories
necessary for using the water heaters safely. The design, production and operation criteria
of the hydraulic safety units are those defined by the European Commission Regulation EN
1487:2002...”, the supplied safety and one-way valve is not suitable and must be replaced wi-
th a safety unit that complies with the above standard.
The supplied valve only answers the EN 1717 regulation defined in section 5.4 of the EN
12976-2 regulation.
To comply with the indications above, the installer can choose whether to assemble the indivi-
dual devices listed above, or install the SAFETY AND ONE-WAY VALVE, available as an optional
accessory on request (code 4400223301).
It includes a valve body, with MF ¾’’ connections, that contains several elements:
•
the safety and outflow valve, set at 4.5 ± 0.5 bar;
•
the one-way valve, with control device (can be inspected, self-cleaning);
•
the device for interrupting the hydraulic load;
•
the stopcock;
•
an adjustable outflow trap.
DANGER!
Do not assemble the safety system together with the safety and one-way valve.
Installing the safety system is an alternative to using the safety and one-way valve (stan-
dard supplied).
The
VALVE
is supplied as a standard component with
the collector. If it has been misplaced or lost contact the
supplier and only ever use original valves.
