Immergas Victrix Zeus 25, Инструкции и рекомендации

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30
31
B
A
C
D
30
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Speed
6
Speed 9
Speed 9
Flow rate (l/h)
Ci
rcu
la
to
r p
um
p a
bs
or
be
d p
ow
er (
W
)
A + B = Head available with bypass closed
B = Head available with bypass open
C + D = Power absorbed by the pump with bypass closed (dotted area)
D = Power absorbed by the pump with bypass open (dotted area)
H
ea
d (kP
a)
Total head available to the system.
Pump release.
If after a long period of inactivity, the circulator
is blocked, adjust the screw in the centre of the head in order
to manually release the motor shaft. Take great care during this
operation to avoid damage to the motor.
By-pass Regulation ( Part. 3 Fig.32 ) .
Th e boiler leaves the factory with the bypass open.
If necessary, the bypass can be regulated to system requirements
from minimum (bypass closed) to maximum (bypass open). Ad-
just using a fl at-head screwdriver. Turning clockwise opens the
bypass and anticlockwise closes it.
1.2 7 CIRCULATION PUMP.
During central heating mode, the Auto and Fixed operating modes
are available.
•
Auto ( A5 = 0 )
: automatic circulator pump speed and proportion-
al head: Th e automatic circulator pump speed varies according
to the power emitted by the burner; the greater the power, the
greater the speed. Moreover, within the parameter, one can
also adjust the circulator pump operating range by setting the
maximum speed “A3” parameter (adjustable from 6 to 9) and
the “A4” minimum speed parameter (adjustable from 6 to the
max. set speed).
• ∆ T Constant ( A5 = 5 ÷ 25 K ) : the pump speed varies to maintain
the ∆ T constant between the system fl ow and return according
to set value K ( A5 = 15 Default ) .
• Fixed (6 ÷ 9 ) : by setting parameters “A3” and “A4” at the same
value, the pump operates at constant speed.
N.B.:
for the boiler to work properly, it is not allowed to drop
below the minimum value indicated above.
In domestic hot water mode, the circulator pump always runs at
full speed.