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1.27 BOILER START-UP (IGNITION).
To commission the boiler (the operations listed below must only be
performed by qualified personnel and in the presence of staff only):
- check that the internal system is properly sealed according to
the specifications set forth by regulations in force;
- ensure that the type of gas used corresponds to the boiler settings
(the type of gas appears on the display on first electrical supply
voltage, or by checking the relative parameter “G”);
- check connection to a 230V-50Hz power mains, correct L-N polarity
and the earthing connection;
-check that there are no external factors that may cause the formation
of fuel pockets;
- switch the boiler on and ensure correct ignition;
- make sure that the gas flow rate and relevant pressure values
comply with those given in the manual (Par. 4.1);
- ensure that the safety device intervenes in the event of gas supply
failure and check the relative intervention time;
- check the intervention of the main switch located upstream from
the boiler and in the boiler;
- check that the intake / exhaust terminals (if fitted) are not
blocked;
- check that the drain trap is full and that it prevents any passage
of flue gas into the room.
- Carry out the flue test.
The system must not be started up if even only one of the checks
should be negative.
1.28 CIRCULATION PUMP.
The boilers are supplied with a variable speed circulator pump.
In the central heating mode, the following operating modes are
available and can be selected from the “P.C.B. programming”
menu.
N.B.:
the ∆T(A3) can be controlled compatibly with the charac-
teristics of the central heating system and of the boiler.
•
Proportional head (A3 = 0):
the circulator speed varies accord-
ing to the power emitted by the burner, the greater the power
the greater the speed.
•
∆T Constant (A3 = 5 ÷ 25 K):
the pump speed varies to maintain
the ∆T constant between the system flow and return according
to set value K (
A3 = 15 Default).
•
Fixed:
setting parameters “A1” and “A2” to the same value
the circulator operates at constant speed. 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.
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.
Bypass Regulation (Part. 25 Fig.33).
N.B.:
the bypass 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.
The 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).
Adjust using a flat-head screwdriver. Turning clockwise opens
the bypass and anticlockwise closes it.
1.29 CIRCULATION PUMP
WITH NEW WAVE 3 ELECTRONICS.
The boilers are supplied with a variable speed circulator pump.
In the central heating mode, the following operating modes are
available and can be selected from the “P.C.B. programming”
menu.
N.B.:
the ∆T(A3) can be controlled compatibly with the charac-
teristics of the central heating system and of the boiler.
•
Proportional head (A3 = 0):
the circulator speed varies accord-
ing to the power emitted by the burner, the greater the power
the greater the speed.
•
∆T Constant (A3 = 5 ÷ 25 K):
the pump speed varies to maintain
the ∆T constant between the system flow and return according
to set value K (
A3 = 15 Default).
•
Fixed:
setting parameters “A1” and “A2” to the same value
the circulator operates at constant speed. 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.
Pump LED.
The LED flashes green when the pump is powered and the pwm
control signal is connected.
The 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 con-
trol.
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.
To see in detail the meaning of the red LED, please refer to the rele-
vant paragraph 3.6 (Possible problems and their causes).
The LED, in addition to being green or red, can also re-
main off.
It is normal for the LED to be off when the pump is not
powered, whereas with the pump powered, the LED must be lit:
if switched off, it means there is a fault.
