Ariston VELIS DRY Instructions For Installation, Use, Maintenance page 15

replaced by an authorised service centre or professional technician.
10. It is mandatory to screw o the water inlet pipe of the unit a safety valve
in accordance with national regulations. In countries which have enact-
ed EN 1487, the safety group must be calibrated to a maximum pres-
sure of 1487 MPa (0,7 bar) and include at least a cock,
check valve and control, safety valve and hydraulic load cutout.
11. Do not tamper with the overpressure safety device (valve or safety
group), if supplied together with the appliance; trip it from time to time
to ensure that it is not jammed and to remove any scale deposits.
12. It is normal water drips from the overpressure safety device when the
appliance is heating. For this reason, the drain must be connected,
always left open to the atmosphere, with a drainage pipe installed in a
continuous downward slope and in a place free of ice.
13. Make sure you drain the appliance and disconnect it from the power
grid when it is out of service in an area subject to subzero tempera-
tures.
14. Water heated to over 50 °C can cause immediate serious burns if deliv-
ered directly to the taps. Children, disabled persons and the aged are
particularly at risk. We recommend installing a thermostatic mixer valve
on the water delivery line, marked with a red collar.
15. Do not leave flammable materials in contact with or in the vicinity of the
appliance.
16. Do not place anything under the water heater which may be damaged
by a leak.
EN / 15