- Pa type of boiler (0 = domestical hot water and heating system boiler
without tank and with 2 sensor/ 1 = domestical
hot water and heating system boiler with tank and
with 2 sensor or only heating system boiler with
tank/ 2 = domestical hot water and heating system
boiler without tank or only heating system boiler
without tank and with 1 sensor
- Pb type oh DHW exchanger oF = with plates /on = with little tank
- Pc miminum of heting supply temperature. (+15 ÷ +50) °C
d) Mode of visualisation of historical failure.
It is activated by pushing P1+P2 for 12s. You visualize alternatively the number of index
failure(look at page 20).
By pushing P3+P4 you go out of the function.
By pushing P2 for 5s you can delete the historical of failure.
2.8. ADJUSTMENT INSTRUCTIONS: NOMINAL HEAT AND
MINIMUM HEAT
The boilers are set you set in our factory and they are predisposed for working with the type of gas of the
data plate.
Check the values of pressure min/max however in how much not all the nets distribute the pressure nominal
gas, value on which the instrument has been regulated in factory.
Check and eventually correct the thresholds of setting to proceed in the following way.
Insert a manometer for gas on the taking of pressure" 1";
Turn on the boiler withdrawing the maximum course of sanitary water;
Make sure that the spool of modulation is fed.
2.8.1 NOMINAL HEAT ADJUSTMENT
1. Turn on the boiler withdrawing the maximum flow of domestical water;
2. Make sure yourself that the spool of modulation is fed;
3. Remove the hood of protection" C";
4. Adjust the maximum pressure acting on the die" B" with the aid of a key from 10 mms; rotating clockwise
the pressure increases, rotating counterclockwise in sense the pressure decreases;
2.8.2 MINIMUM HEAT ADJUSTMENT
1. Set the boiler on “Winter” position (see at page 26);
2. Close the contact of ambient thermostat if you have it;
3. Set heating regulation at maximum;
4. Set heating power at maximum (see at page 26).
5. Rotate the red die" Á." up to the attainment of the suitable least pressure on the book (clockwise it
increases, in sense counterclockwise it decreases);
6. Put again the hood of protection" C."
7. For the values of regulation of the heating power of the boiler see at pages 23,34
8. Withdraw the maximum flow of sanitary water to verify the pressure of the maximum heat.
Remember to always close the takings of pressure after the use and to verify its correct estate
2.9 SLOW IGNITION AND NOMINAL HEAT ADJUSTMENT
2.9.1 SLOW IGNITION ADJUSTMENT
The boiler is delivered already set to the following values:
MET = 30 mm H2O
LPG = 80 mm H2O
Follow these instructions if you have to change these values:
• open the domestic water to its maximal level and turn the boiler off;
• turn the boiler on;
• check the pressure of the gas to the burner during the cycle of ignition (the pressure of slow ignition is
actually maintained to the relevation of the flame).
21
• push for 9 sec P1 and P2 and see c) “Mode of parameters setting” (look at page 20)
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