Immergas EOLO Extra 24 kW - Page 11

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STEEkW ed 01/06 EOLO Extra kW
Technical Documentation
Technical Documentation
Exchanger
return
D.H.W.
EXCHANGER
DELIVERY
Motorised 3-way valve.
It is an electric motor (1) connected to the 3-way unit (2) and
locked by a fork that allows, according to the request made
(d.h.w. or central heating), boiler water to flow into the central
heating system or in the d.h.w. plate exchanger.
is depends on the position of the shutter (4) which closes
passage to the system while simultaneously opening it to the
d.h.w. exchanger (d.h.w. position) or vice versa (central heating
position).
e motor (1) is made to work by the electronic board and,
with each 180° rotation, the shutter (4) moves into both
positions.
e hydraulic part consists of a brass unit (2).
Operation in the central heating mode.
e shutter’s (4) counteracting spring (3) is not compressed
(central heating position), keeping passage to the d.h.w. plate
exchanger closed and passage to the system delivery open.
Both the spring (3) and shutter (4) are located inside the 3-
way brass body (2).
Operation in the d.h.w. mode.
e standard position of the hydraulic unit is always in the
d.h.w. mode.
e electric motor (1) pushes the rod (5) to which the shutter
(4) is connected which closes passage to the system, simulta
-
neously opening it to the d.h.w. plate exchanger, the shutter’s
(4) contrasting spring (3) is compressed (d.h.w. position).
Both the spring (3) and shutter (4) are located inside the 3-way
valve brass body (2).
EXCHANGER
DELIVERY
S Y S T E M
DELIVERY
1
2
3
4
5
Exchanger
delivery
System
delivery
D.h.w.
exchanger
delivery