Immergas VICTRIX OMNIA - Page 36

36
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
1.30 WAVE 3 CIRCULATION PUMP
During central heating mode, the Auto and Fixed operating
modes are available.
- Auto (A5 = 0): automatic circulator pump speed and propor-
tional head: the circulator pump speed varies according to the
power supplied 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” min-
imum speed parameter (adjustable from 6 to max set speed).
- ΔT Constant (A5 = 5 ÷ 25 K): the pump speed varies to main-
tain the ΔT constant between the system ow and return ac-
cording to set value K (A5 = 15 Default).
- Fixed (6 ÷ 9): by setting parameters “A3” and “A4” at the same
v a lu e , t h e pu m p o p e r a t e s a t c o n s t a n t s p e e d .
For the boiler to work properly, it is not allowed to drop
below the speed minimum value.
In domestic hot water mode, the circulator pump always
r u n s a t f u l l s p e e d .
Pump LED.
e LED ashes green when the pump is powered and the pwm
control signal is connected.
e LED lights up steady green when the pump is pow-
ered and the signal cable disconnected. In these condi-
tions the pump works at maximum and without control.
Alarm warnings.
If the pump detects an alarm, the LED switches from green to red;
this can mean one of the following failures:
- low supply voltage;
- rotor seized;
- electrical error.
For a detailed description of the meaning of the red LED, refer to
(Parag. 3.6).
e LED, in addition to being green or red, can also re-
main o.
It is normal for the LED to be o when the pump is not
powered, whereas with the pump powered, the LED
must be lit: if switched o, it means there is a fault.
Pump release.
If aer a long period of inac tiv it y, the circu lator is blocked, adjust
the screw in the centre of the head in order to manually release the
motor sha.
Take great care during this operation to avoid damage to the mo-
tor.
Bypass Adjustment (Parag. 1.32).
e boiler leaves the factory with the bypass open.
If necessary, the by-pass can be regulated to system requirements
from minimum (by-pass closed) to maximum (by-pass open).
Adjust using a at head screwdriver, turn clockwise and open the
by-pass, anticlockwise it is closed.
e by-pass ensures minimum circulation of the water
in the boiler and correct operation of the appliance if the
systems are divided into more than one zone.