ICI Caldaie SOLAR C 25 Instruction Manual - page 19
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2.7 ADJUSTMENT
INSTRUCTIONS:
MAXIMUM AND MINIMUM HEAT
OUTPUT
The boilers are pre set in the factory for the gas type showing on the data plate.
Check the min/max pressure setting. This is important due to the gas supply pressure varying by country.
To Check and correct the gas pressure proceed in the following way.
Insert a manometer for the gas at the point " 1";
Turn on the boiler and open the hot tap fully ;
MAXIMUM HEAT OUTPUT ADJUSTMENT
1.
Turn on the boiler and open the hot tap fully;
2.
Remove the hood of protection" C" ( see fig. section 2.5);
3.
Adjust the maximum pressure acting on the nut " B" with the aid of a 10 mm spanner ; rotating
clockwise the pressure increases, rotating counter clockwise the pressure decreases;
MINIMUM HEAT OUTPUT ADJUSTMENT
1. Set the boiler on “Winter” position (see section 4.1);
2. Ensure any room thermostat is calling for heat;
3. Set heating regulation to maximum;
4. Set heating power to maximum (see section 4.1).
5. Rotate the red screw "Á." To reach the minimum pressure as per the table in section 2.10 (clockwise it
increases, counter clockwise it decreases);
6. Replace the hood of protection" C."
7. All the values to set-up the heating power for the boiler are in section 2.10
8. Open the hot tap fully
to verify the pressure of the maximum heat.
Remember always to tight the junctions after the use and to check the seal.
2.8 SLOW IGNITION AND HEAT OUTPUT ADJUSTMENT
SLOW IGNITION ADJUSTMENT
The boiler is delivered already set to the following values:
NATURAL GAS = 30 mm H
2
O
LPG = 80 mm H
2
O
Follow these instructions if you have to change these values:
• open the domestic water to its maximum 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 remains low until you
can see the flame).
• Press for 6 sec P1 and P2 and see c) “Parameters setting” (See section 2.6)
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 ignition 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 need. If a further change is needed repeat this operation by turning the boiler on
and off.
OUTPUT HEAT ADJUSTMENT
The maximum heating output has to be adjusted according to system needs.
Gas pressure values are shown at section 2.10 in the table “INJECTORS PRESSURE TABLE”.
For the adjustment of the burner gas pressure follow these indications:
• Set the boiler to “Winter” mode;
• Ensure any room thermostat is calling for heat;
• Press for 6 sec P1 and P2 and see c) “Parameters setting” (See section 2.6)
Set P1 as you need.
N.B.: Wait about 10 seconds to allow the pressure stabilisation after the slow ignition.