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4.4 I

NITIAL

TART

4.5

OMBUSTION

. 4.2

4.6

UME

ISCHARGE

ONITORING

In the boiler, it is possible to monitor the correct operation of

the flue exhaust/air intake, checking for a loss of general

pressure in the system. Through the use of a differential

manometer connected to the test points of the combustion

chamber, it is possible to detect the ∆P of operation of the air

pressure switch.

The value detected should not be less than 0.5 mbar under

conditions of maximum thermal power in order for the boiler

to function properly and without interruption.

HE CHECKS TO BE RUN BEFORE INITIAL START

1. Make sure that:

- the screw on the automatic air valve has been loosened when the

- If the water pressure in the system is below 1.5 bar, bring it up to the appropriate

- Ensure that the gas cock is closed;

- Make sure that the electrical connection has been made properly and that the

- Supply power to the boiler by pushing the On/Off button "A" (see F

- Loosen the cap on the head of the pump to eliminate any air pockets;

- Repeat the procedure for bleeding the radiators of air;

- Check the system pressure and, if it has dropped, open the filling loop

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

4. Press the reset button "E" for the lighting system; the spark will light the main

5. Check the minimum and maximum pressure values for the gas going to the

NALYSIS

system is full;

level;

earth wire is connected to an efficient earthing system;

L.E.D. "B" will illuminate. Then push the button "C" in for central heating - the

L.E.D. "D" 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.

again to bring the pressure back up to 1.5 bar.

soap solution and eliminate any leaks.

burner. If the burner does not light the first time, repeat the procedure.

bur ner ; adjust it if needed using the values indicated in the table in

section 5 (See the relative section for burner pressure adjustment within the

servicing manual).

The flue connector has two apertures, readings can be taken for

the temperature of the combustion by-products and of the

combustion air, as well as of the concentrations of O

etc. .

To access these intakes it is necessary to unscrew the front

screw and remove the metal plate with sealing gasket.

To achieve the best test conditions, turn the central heating

adjustment knob "G" to the "max" position and remove the

electrical connection to the heating sensor (see section 6.). This

will allow the appliance to operate at the maximum heating

power.

UP ARE AS FOLLOWS

.4.1) - the

and CO

. 4.3