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Ariston microCombi Руководство по установке

3.4. I

NITIAL

TART

3.5

PERATIONAL

DJUSTMENTS

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.

UP ARE AS FOLLOWS