Ariston EURO COMBI A/27 MFFI Kurulum Talimatları Kılavuzu - Sayfa 19
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3.5
Operational
Adjustments
A
3.6
Combustion Analysis
Supplied By www.heating spares.co Tel. 0161 620 6677
- 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 pas-
sage 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).
The boiler was designed to make it easy to regulate and check the various features. To
access the areas where the adjustment and control devices are located, simply remove
the plugs by pressing from the inside, unscrew the screws "A" and remove the bottom
part of the instrument panel, rotating it upward.
Right hand side service panel also provides access to:
- the power supply cord connector;
- the fuses.
Left hand side:
- the jumper for regulating the ignition delay (anti-
cycling) feature, which
minutes (factory set at 1 minute);
- the potentiometer for regulating the soft-light feature,
the setting for whichcan range from the minimum ther-
mal power to the maximum:
- the potentiometer for the maximum thermal power for
the heating system, maximum thermal power setting
(factor y set at the maximum value, unless
indicated otherwise on the adhesive sticker located in
proximity to the potentiometer);
- The connection for the diagnostic device (TCS).
The boiler is designed to make it easy to analyse the combustion by-products.
Using the especially designed apertures, readings can be taken on the temper-
ature of the combustion by-products and of the combustion air, as well as of the
concentrations of O
and CO
2
The best maximum-power test conditions for the heating system are when the
selector "C" is turned to the flue analysis setting.
can be set from 0 to 2
G20
5.5 mm c.a.
G25
4.5 mm c.a.
G30-31
1.8 mm c.a.
, etc.
2
19