Ferroli DIVAtech C 24 D Instrucciones De Uso página 28

A - Upstream pressure point
B - Downstream pressure point
R
I - Gas valve electrical connection
R - Gas outlet
B S - Gas inlet
I
A
TYPE SGV100
Pi max 65 mbar
24 Vdc - class B+A
S
fig. 10 - Gas valve
Heating power adjustment
To adjust the heating power, switch the boiler to TEST mode (see sec. 4.1). Press the
heating buttons detail 3 - fig. 1 to increase or decrease the power (min. = 00 - max. =
100). Press the reset button within 5 seconds and the max. power will remain that just
set. Exit TEST mode (see sec. 4.1).
4.2 Startup
Before lighting the boiler
• Check the seal of the gas system.
• Check correct prefilling of the expansion tank.
• Fill the water system and make sure all air contained in the boiler and the system
has been vented.
• Make sure there are no water leaks in the system, DHW circuits, connections or boil-
er.
• Check correct connection of the electrical system and efficiency of the earthing sys-
tem.
• Make sure the gas pressure for heating is that required.
• Make sure there are no flammable liquids or materials in the immediate vicinity of
the boiler
Checks during operation
• Switch the unit on.
• Check the tightness of the fuel circuit and water systems.
• Check the efficiency of the flue and air/fume ducts while the boiler is working.
• Make sure the water is circulating properly between the boiler and the systems.
• Make sure the gas valve modulates correctly in the heating and domestic hot water
production stages.
• Check correct boiler lighting by performing various tests, turning it on and off with
the room thermostat or remote control.
• Make sure the fuel consumption indicated on the meter matches that given in the
technical data table in cap. 5.
• Make sure that with no demand for heating, the burner lights correctly on opening a
hot water tap. Check that in heating mode, on opening a hot water tap, the heating
circulating pump stops and there is regular production of hot water.
• Make sure the parameters are programmed correctly and carry out any required
customisation (compensation curve, power, temperatures, etc.).
28 EN
~ 24Ω
fig. 11 - Gas valve connection
cod. 3540Z441 -
DIVAtech C 24 D
4.3 Maintenance
Periodical check
To ensure correct operation of the unit over time, have qualified personnel carry out a
yearly check, providing for the following:
• The control and safety devices (gas valve, flow meter, thermostats, etc.) must func-
tion correctly.
• The fume exhaust circuit must be perfectly efficient.
(Sealed chamber boiler: fan, pressure switch, etc. -The sealed chamber must be
tight: seals, cable glands, etc.)
(Open chamber boiler: anti-backflow device, fume thermostat, etc.)
• The air-fume end piece and ducts must be free of obstructions and leaks
~ 65Ω
• The burner and exchanger must be clean and free of deposits. For possible cleaning
do not use chemical products or wire brushes.
• The electrode must be properly positioned and free of scale.
=
• The gas and water systems must be airtight.
• The water pressure in the cold water system must be about 1 bar; otherwise, bring
it to that value.
• The circulating pump must not be blocked.
• The expansion tank must be filled.
• The gas flow and pressure must correspond to that given in the respective tables.
/2011 (Rev. 00)
=
fig. 12 - Electrode positioning