Ecoflam BLU 700.1 PAB Low NOx TL - MB-DLE 410 [8/36] Adjusting the combustion

420010268000 Blu 500.1 P ÷ 700.1 P Low Nox

Metano

9,6%

CO <50 ppm

G.P.L.

11,7%

CO <50 ppm

ADJUSTING THE COMBUSTION

WARNING:

in order to adjust combustion and thermal capacity correctly, the fumes must be analyzed using specific instruments. Combustion and ther-

mal capacity must be adjusted simultaneously, making sure that the values read are correct and in any case, that they comply with the

safety regulations in force.

THIS OPERATION MUST BE PERFORMED BY PERSONNEL WHO ARE PROFESSIONALLY QUALIFIED AND

AUTHORIZED BY ECOFLAM SPA.

ELECTRICAL CONNECTIONS

All burners factory tested at 400 V 50 Hz three-phase for motors and 230 V 50 Hz monophase with neutral for auxiliary equip-

ment. If mains supply is 230 V 50 Hz threephase withuot neutral, change position of connectors on burner as in fig. Protect burner

supply line with safety fuses and any other devices required by safety standards obtaining in the country in question.

CONNECTION TO THE GAS PIPELINE

Once connected the burner to the gas pipeline, it is necessary to control that this last is perfectly sealed. Also verify that the chimney is

not obstructed. Open the gas cock and carefully bleed the piping through the pressure gauge connector, then check the pressure value

trough a suitable gauge. Power on the system and adjust the thermostats to the desired temperature. When thermostats close, the sea-

ling control device runs a seal test of valves; at the end of the test the burner will be enabled to run the start-up sequence.

START UP OF THE BURNER

PRELIMINARY CHECKS

Before starting up the boiler check the following:

• gas type and feed pressure; • gas valves closed; • the seals in the pipe fittings; • gas pipe breather and input pressure;

• that the cable complies with the diagram and the phase and neutral wires correspond; • that the burner shuts down when the boi-

ler thermostat opens • the seal of the boiler furnace which prevents air from entering • the seal on the flue-boiler pipe fitting; • the

condition of the flue (sealed, free from blockage, etc.).

If all these conditions are present, start the burner. The control device starts the motor to carry out prewashing of the combustion

chamber. During this prewash period (about 30 seconds) the device checks that air pressure is correct via the air pressure switch. At

the end, it supplies power to the transformer and opens the gas valves. The flame must be lit and stabilize within 3 seconds, which

is the device's safety time limit. Check to ensure the flame is lit before placing any control instrument in the flue. Adjust and check

the gas flow necessary for the boiler at the meter. Adjust the air flow according to the gas flow to obtain correct combustion.

IMPORTANT ADVICE

All adjustable parts must be fixed by the installer after making adjustments. Check flue combustion after each adjustment. The

values must be approx. 9.7 (G20) 9.6 (G25) 11.7 (l3B) 11.7 (l3P) and the CO must be less than 75 ppm.

CONTROL BOXES LANDIS & STAEFA LGB21/LGB22

The Landis control box starts the fan and begins the pre-purging of the combustion chamber. The air pressure switch controls the

correct operation. At the end of the pre-purging phase, the ignition transformer cuts-in followed by the opening of the gas valves.

In case of missed ignition or accidental shutdown, the ionisation probe cuts-in and set the burner in lockout mode within the safety

time.

Description