Ariston microGENUS 23 MFFI Інструкція з монтажу Посібник з монтажу - Сторінка 17
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3.4. I
S
-
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 bar, bring it up to the
appropriate level;
- Check to see whether 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 turning the On/Off switch "A" (see F
- the L.E.D. "D" will illuminate - turn the selector knob "C" to the winter
/central heating position. 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 lines.
- 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 bar.
2. Check the exhaust flue for the fumes produced by combustion.
3. Make sure that all gate valves are open;
4. Turn on the gas cock and check the seals on the connections, including
the one for the burner, making sure that the meter does not signal the
passage of gas. Check the connections with a soap solution and
eliminate any leaks.
5. Press the reset button "A" for the lighting system; the spark will light the
main burner. If the burner does not light the first time, repeat the
procedure.
6. 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).
(See section 3.2 for references) it is possible to:
-
Set the temperature of the heating system by adjusting the knob "C"
-
Set the temperature of the domestic hot water by turning knob "B"
-
The selector knob "G" allows the user to choose the economy mode
(position "E") or the comfort mode (position "C").
The economy mode is the normal state for the operation of the boiler,
since the domestic water is heated up only when a tap is turned on.
The comfort mode is a special operating state, because the water
contained in the secondary exchanger and in the primary exchanger is
kept in a preheated condition, thereby allowing a quicker delivery of
domestic water when required. The latter is therefore the more
convenient choice.
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 potentiometer for adjusting the ignition delay (anti-cycling) feature,
which can be set from 0 to 2 minutes (set in the factory at one minute);
6. the time clock connector.
17
-
:
UP ARE AS FOLLOWS
.3.1)
IG