elco GHO-Tron 7.15000 R, Operating Instructions Manual

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420010263301 GHO - TRON 7.15000 / 7.17000 R
EN
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
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
Rivelazione
di fiamma
Spia di blocco
Valvola gas
Serranda aria
Serranda gas
Trasformatore
di accensione
Pressostato aria
Motore ventilatore
Pressostato gas
0
min
100%
t1 t2
t4
t3
t6 t5
Ciclo di funzionamento normale
Ciclo di funzionamento�
in mancanza di fiamma all'accensione
t1 t2
t4
t3
Consenso
min./max. potenza
Gas manostat
Fan motor
Air Switch
Ignition transformer
Gas valve
Min/max capacity
enabling device
Air damper
Gas damper
Flame detector
Cut-out pilot lamp
Normal operating cycle
Operating cycle in the event of
ignition failureNormal operating cycle
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:
Manual change
I - High flame operating opening position adjusting cam (Heavy-Oil).
II - Limit switch for the air damper position at burner’s shut down.
III - Ignition flame opening position adjusting cam (Gas).
IV - Ignition flame opening position adjusting cam(Heavy-Oil).
V - Low flame operating opening position adjusting cam (Gas).
VI - Low flame operating opening position adjusting cam (Heavy-Oil).
VII - High flame operating opening position adjusting cam (Gas).
VIII - Not used cam.
Cam VIII
is never used