6
2. Hydraulic connections
EN
1. Input pipe
2. Safety valve (0,8 MPa)
3. Reduction valve ( if the water supply pressure is
higher than a 0,6 MPa)
7
1
3
5
4
Top connection water heater
When connecting the water heater to the water supply system, pay attention to the indicative color markings
(rings) of the pipes: blue for cold water and red for hot water.
The assembly and installation of the return safety valve supplied with the water heater is mandatory for safety.
EXCEPTION: If local regulations require the use of another safety valve or device (complying with EN 1487 or
EN 1489 standards) they must be purchased separately. For devices that comply with the EN 1487 standard,
the maximum working pressure announced should be 0.7 MPa. For other safety valves, the pressure to which
it is calibrated must be 0.1 MPa less than that marked on the appliance plate. In these cases, the back-off valve,
which is supplied with the water heater, should not be used.
ATTENTION:
• You must not use any other return safety valve, other than the one supplied with the heater. The device may fail if any
other return safety valves are used.
• The presence of other or old reflective protection valves can cause deterioration of the water heater, therefore they
must be removed.
• The fixing of the safety return valve to cables greater than 10 mm in thickness is forbidden, as it could damage the valve
and render the water heater dangerous.
• The safety return valve and the pipe between the valve and the water heater must be protected against freezing.
During draining with the hose, the free end must always be open (not submerged). The hose should also be protected
against freezing.
2
2
4. Shut-off valve
5. Discharge mouth to grid
6. Hose
7. Drain wrench
1
6
5
2
3
4
Bottom connection water heater
2
6