Ariston microCombi Panduan Petunjuk Instalasi - Halaman 17
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Halaman Cetak
3.4. I
S
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NITIAL
TART
UP
3.5
O
PERATIONAL
A
DJUSTMENTS
T
HE CHECKS TO BE RUN BEFORE INITIAL START
1. Make sure that:
- the screw on the automatic air valve has been loosened when the
system is full;
- If the water pressure in the system is below 1.5 bar, bring it up to the
appropriate level;
- Ensure that the gas cock is closed;
- Make sure that the electrical connection has been made properly and
that the earth wire is connected to an efficient earthing system;
- Supply power to the boiler by pushing the On/Off button "A" (see F
3.1) - the L.E.D. "K" will illuminate. Then push the button "F" in for
central heating - the L.E.D. "G" will illuminate. This will start the
circulation pump. After 7 seconds, the boiler will signal a shutdown due
to ignition failure. Leave the boiler as it is until all of the air has been bled
from the system.
- Loosen the cap on the head of the pump to eliminate any air pockets;
- Repeat the procedure for bleeding the radiators of air;
- Open the taps for a brief period;
- Check the system pressure and, if it has dropped, open the filling loop
again to bring the pressure back up to 1.5 bar.
2. Make sure that all gate valves are open;
3. Turn on the gas cock and check the seals on the connections with an
approved soap solution and eliminate any leaks.
4. Press the reset button "J" for the lighting system; the spark will light the
main burner. If the burner does not light the first time, repeat the
procedure.
5. Check the minimum and maximum pressure values for the gas going to
the burner; adjust it if needed using the values indicated in the table in
section 4 (See the relative section for burner pressure adjustment within
the servicing manual).
To access the areas in which adjustments are made, it is necessary to open
the control panel, as indicated in section 3.3, then remove the rear
inspection cover by unscrewing the two screws. Access is thereby provided
to the P.C.B. and to the following components:
1. the power supply cable connector;
2. the fuses;
3. the soft-light potentiometer, the setting for which, can range from the
minimum thermal power to the maximum;
4. the maximum thermal heating power potentiometer adjustable by the
minimum to maximum power (already calibrated in the factory to 70% of
the maximum thermal power);
5. the time clock connector.
17
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UP ARE AS FOLLOWS
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IG