Ecoflam BLU 15000.1 PR, Manual

Page: 9 / 28

9
420010258900 BLU 15000.1 - 18000.1 PR
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:
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
VI - Not used cam
VII - Not used cam
VIII - Not used cam
Cam VIII
is never used
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 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 shutdown 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, Model LFL1.622-1.333 OPERATING CYCLE
Ref. Description
t1
Duration Waiting time for confirmation
t2 of air pressure
t 3 Preventilation time
t4 Safety time
t5 Pressurizing time
Time for ena
b ling operation of the
main gas valve on minimum capacity
t6 Time for ena b ling operation of the
main gas valve on maximum capacity
Duration
8 ”
66”
2”
4”
10”
10”
Rivelazione
di fiamma
Spia di b locco
Valvola gas
Serranda aria
Farfalla gas
Trasformatore
di accensione
Pressostato aria
Motore ventilatore
Pressostato gas
0
min
100%
t1 t2
t4
t 3
t6 t5
Ciclo di funzionamento normale
Ciclo di funzionamento
in mancanza di fiamma all'accensione
t1 t2
t4
t 3
Consenso
min./max. potenza
Gas manostat
Fan motor
Air Switch
Ignition transformer
Gas valve
Min/max capacity
ena b ling device
Air damper
Gas damper
Flame detector
Cut-out pilot lamp
Normal operating cycle
Operating cycle in the event of
ignition failureNormal operating cycle
COMBUSTION ADJUSTMENT
WARNING: In order to have a correct combustion and thermal output adjustments, these must be carried out together
with a combustion analysis, to be executed through suitable devices, taking care that the values are the correct ones and
are in accordance with the local safety regulations. The adjustments must be carried out by qualified and skilled techni-
cians authorised by Ecoflam Bruciatori S.p.A.
EN