Ecoflam BLU 7000.1 PR Manual Del Usuario página 13

LANDIS & STAEFA, Model LFL1.622-1.333 OPERATING CYCLE
Normal operating cycle
Ciclo di funzionamento normale
t2
t1
Gas manostat
Pressostato gas
Motore ventilatore Fan motor
Pressostato aria Air Switch
t4
Trasformatore
Ignition transformer
di accensione
Valvola gas Gas valve
Consenso
Min/max capacity
min./max. potenza
enabling device
100%
Serranda aria
min
Air damper
0
Gas damper Farfalla gas
Rivelazione
Flame detector
di fiamma
Cut-out pilot lamp
Spia di blocco
the same time the two gas valves open (Vs safety valve and Vl Low flame working valve). The total safety, in case of
missed ignition or casual burner's flame-out, is granted by a ionisation probe which cuts-in and sets the burner shut-
down within the safety time. In case of gas lack or a major pressure drop, the minimum air pressure switch shuts down
the burner.
LANDIS & STAEFA SQM 50.481A2 AIR DAMPER MOTOR
Remove cover to gain access to the adjusting cams.The cams are to be adjusted through the suitable key provided for.
Description:
ignition failureNormal operating cycle
t3
t1
t5 t6
I - High flame opening position adjusting cam (Air)
II - Limit switch for the air damper position at burner's shut down
III - Min. flame opening position adjusting cam (Air).
IV - Low flame opening position adjusting cam (Air)
V - Not used cam
Cam VIII
VI - Not used cam
is never used
VII - Not used cam
VIII - Not used cam
420010294601 BLU 7000.1 - 12000.1 PR
Operating cycle in the event of
Ciclo di funzionamento�
in mancanza di fiamma all'accensione
t2 t3
t4
13
Ref. Description
t1 Duration Waiting time for confirmation
t2 of air pressure
t3 Preventilation time
t4 Safety time
t5 Pressurizing time
Time for enabling operation of the
main gas valve on minimum capacity
t6 Time for enabling operation of the
main gas valve on maximum capacity
The control box starts the burner
fan, to carry out the prepurging
of the combustion chamber, and
cheks the vent air pressure throu-
gh the air pressure switch. At the
end of prepurging, the ignition
transformer cuts-in and generates
a spark between the electrodes. At
EN
Duration
8"
66"
2"
4"
10"
10"