(57) A hydraulic device for distributing water for heating comprising a body (37) in which
at least the following are defined: at least a delivery pathway (39) for water for
heating and extending from an inlet (38) for the water for heating, destined to be
connected to a delivery of a centralised plant (17), to an outlet (49), destined to
be connected to a low-temperature heating plant (12b) and/or to a heat exchanger (3)
with sanitary water; a first pathway (53) for return water from a low-temperature
heating plant (12b) extending from a first inlet (52) for the return water from the
low-temperature heating plant (12b) to a first outlet (54) for the return water; a
second pathway (63) for the return water extending from a second inlet (62) to a second
outlet (64), destined to be connected with a return in the centralised plant (17);
and a mixer group (55), arranged between the delivery pathway (39) of the heating
water and the first pathway (53), destined to determine a flow of return water to
be pre-mixed with the water for heating in the delivery pathway (39) such as to obtain
mixed water having an intermediate temperature, suitable for sending into the outlet
(49) for water for heating.
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