6
Giacomini S.p.A.
Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italia
consulenza.prodotti@giacomini.com
+39 0322 923372 - giacomini.com
Secondary circuit: DHW
Cold water inlet (A), cold water outlet (B) and hot water
outlet (C).
The DHW circuit consists of a flow switch, a check valve on
the DCW inlet and two brass spacers for the introduction of
the water meters.
A B
C
Primary circuit
Primary inlet (D) and outlet (E). The primary circuit consists
of a filter, a three-way motorized priority valve, an manual
air vent valve, a heat exchanger, a pressure gauge and a
two-way motorized zone valve.
Energy Saving function: the two-way modulating valve
controlled by the electronic management of the HIU,
restricts the flow demand from the primary to the minimum
necessary to obtain the preset Set-Point temperature.
The priority valve diverts the flow in the heat exchanger (if
there is a request of DHW: DHW flow switch enabled) or in
the heating system.
The thermal energy meter can be installed in place of the
brass spacer, fitting its temperature probe in the relative
housing (Components - Ref. 1).
D
E
D
E
Primary DHW circuit
Primary heating circuit
Secondary circuit: heating
Delivery (G) and return (F). The heating circuit consists of a
heat exchanger, an manual air vent valve, a pressure gauge,
a minimum pressure switch, a safety valve, an expansion
vessel and a high-efficiency circulator (ErP 2009/125/EC).
F
G
