Position Of Electrodes; Ionization Current - Ecoflam BLU 1700.1 PR Mode D'emploi

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420010288700 BLU 1700.1 PR - BLU 2000.1 PR

The firing head position adjustment is made in order to obtain the best combustion efficiency. When used with mini-

mum outputs the firing head is adjusted in rear position. With high output, the firing head is adjusted in forward posi-

tion. Adjustment: - Loosen screw A through a suitable Allen key. - By a screwdriver act on the hex. head screw B until

is reached the desired position. - Tighten screw A

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Ionization probe

ADJUSTMENT OF GAS MINIMUM PRESSURE SWITCH

Unscrew off and remove cover M. - Set regulator N to a value equal to 60% of gas nominal feed

pressure (i.e. for nat. gas nom. pressure = 20 mbar, set regulator to a value of 12 mbar; for

L.P.G. nom. pressure of G30/G31- 30/37 mbar, set regulator to a value of 18 mbar).Screw

up cover M

ADJUSTMENT OF THE AIR PRESSURE SWITCH

Unscrew screws A and B and remove cover C.- Set the pressure switch to the minimum by

turning regulator D to position 1.

- Start the burner and keep in low flame running, while checking that combustion is correct.

Through a small cardboard, progressively obstruct the air intake until to obtain a CO2

increase of 0,5÷0,8% or else, if a pressure gauge is available, connected to pressure port E,

until reaching a pressure drop of 1 mbar (10 mm of W.G.). - Slowly increase the adjust-

ment value of the air pressure switch until to have the burner lockout. Remove the

obstruction from the air intake, screw on the cover C and start the burner by pressing the

control box rearm button.

Note: The pressure measured at pressure port E must be within the limits of the pressure switch working

range. If not, loose the locking nut of screw F and gradually turn the same: clockwise to reduce the pressure; coun-

terclockwise to increase. At the end tighten the locking nut.

With the burner switched off, connect a DC microammeter

with a 0÷50 or 0÷100 µA dial. When the burner is running,

and is properly adjusted, the value read must be steady and

never be smaller than 3 µA.

SETTING THE FIRING HEAD