Position Of Electrodes - Ecoflam BLU 1700.1-20 PAB Mode D'emploi

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420010350800 Blu 1700.1÷2000.1 P AB

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 desi-

red position. - Tighten screw A

–

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

DJUSTMENT 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 rea-

ching a pressure drop of 1 mbar (10 mm of W.G.). - Slowly increase the adjustment 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.

The minimum current necessary to operate the control-box is 3

µA (Landis LGB22). When the measurement of the current is

required it is necessary to disconnect the lead to the probe and

insert in its place a microammeter for direct current (see fig.

under).

SETTING THE FIRING HEAD