2.7. 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.
2.7.1 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;
2.7.2 MINIMUM HEAT ADJUSTMENT
1. Set the boiler on “Winter” position (see at page 21);
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 21).
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 page 18
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
2.8 SLOW IGNITION AND NOMINAL HEAT ADJUSTMENT
2.8.1 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).
•
push for 6 sec P1 and P2 and see c) “Mode of parameters setting” (look at page 18)
Set P2 as you need.
•
To reset the value of slow ignition you need to turn off the boiler, to again act on the parameters and to remake
ignitionr verifying the attainment value of desired pressure.
ATTENTION: the slow ignition time for its adjustment is 5 seconds after which the nozzle pressure will increase or
decrease according to the energetical need. If a further change is needed repeate this operation by turning the boiler on
and off.
2.8.2 NOMINAL HEAT ADJUSTMENT
The greatest heating power has to be adjusted according to system needs.
Gas pressure values are shown at page 18 in the table “INJECTORS PRESSURE TABLE”.
For the adjustment of the burner gas pressure follow these indications:
•
Set the boiler on “Winter” position;
•
create a jumper on the ambient thermostat in order to start the boiler;
•
push for 6 sec P1 and P2 and see c) “Mode of parameters setting” (look at page 15)
Set P1 as you need.
N.B.: wait about 10 seconds to allow the pressure stabilisation after the slow ignition.
2.9 DIFFERENT GASES
This is a LPG or natural gas boiler as well. The transformation from one gas type to the other one has to be carried out
as follows:
Transformation from methane to LPG gas
•
replace burner injectors
•
change the JP1 jumper position and set it to “LPG” position (see the electrical scheme);
•
adjust MIN/MAX pressure levels keeping in mind the above shown instructions;
•
as far as the injectors diametres and the burner gas pressure are concerned, see the above table;
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