11
STV2I ed 11/09
VICTRIX 2 I Export
Technical Documentation
Technical Documentation
Primary circuit (boiler circuit).
The primary circuit, with relative control and safety devices,
is started
every time there is a central heating or domestic
hot water request.
Operation
(see VICTRIX 26 2 I hydraulic dia-
gram).
The heat contained in the combustion products is absorbed
by the pipes of the water-gas primary heat exchanger with coil
inserted in the condensation module (16) which then gives
the heat up to the water made to circulate inside the boiler
pump (31).
The water is introduced directly into the system or can be
diverted inside the stainless steel instant plate heat exchanger
(32).
VICTRIX 26 2 I - VICTRIX X 24 2 I
This depends on the position of the motorised 3-way valve (33),
which at rest allows flow towards the domestic hot water heat
exchanger (32), while following a central heating request causes
diversion towards the system flow (M) and return (R) pipes.
Head-flow rate graphics.
The progress of the curve that represents the flow rate-head ratio
available to the system, depends on the functioning speed of
the pump and insertion or not of the system automatic by-pass
which, allows to set greater or less head on the system.
The graphs below show the characteristic curves.
A = Head available to the plant at maximum speed with by-pass excluded
B = Head available to the plant at maximum speed with by-pass inserted
H
ead (m H
2
O)
H
ead (kP
a)
Flow rate Litres/h
A
B
VICTRIX X 12 2 I
H
ead (m H
2
O)
H
ead (kP
a)
Flow rate Litres/h
A
B
Содержание VICTRIX 26 2 I
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