6
STV50 ed 09/08
VICTRIX 50 Rev. 002
Primary circuit (boiler circuit).
The primary circuit with relevant control and safety devices
is triggered
each time there is a request for central heating
or antifreeze.
Operation.
The heat contained in the flue produced by combustion is ab-
sorbed by the pipes of the coil water-gas exchanger fitted in the
condensation module (13), which, in turn, transfers it to the
water circulating inside thanks to the boiler circulator (28).
Flow-head graph.
The trend of the curve that represents the flow-head ratio
depends on circulator speed.
A = Head available to the system at maximum single boiler speed
B = Head available to the system at second single boiler speed
C = Head available to the system at maximum speed with check valve for boilers in cascade (battery)
D = Head available to the system at second speed with check valve for boilers in cascade (battery)
1
Circulator.
The circulator works on the primary circuit return and is it
physically coupled to the components supporting plate.
A threaded fitting on the body is used to fix the automatic air
vent (1) directly.
H
ead (kP
a)
A
Flow Litres/h
B
C
D
H
ead (H
2
O)
Technical Documentation
Technical Documentation
