Ecoflam BLU 2000.1 PAB TL - VGD 40.080 [12/44] Blu 1700 2000 p ab

Ecoflam BLU 2000.1 PAB TC - MB-DLE 415 [12/44] Blu 1700 2000 p ab
12
420010281600 Blu 1700.1÷2000.1 P AB
EN
Remove cover to gain access to the adjusting cams.The cams are to be adjusted
through the suitable key provided for. Description:
I-Limit switch for air damper “High Flame” position adjustment
(Max. power)
II - Limit switch for the air damper position at burner’s shut down
III - Limit switch for air damper “Low Flame” position adjustment
(Min. power)
V-Limit switch for 2nd stages solenoid valve opening release
NOTE :
Cam V (to allow the 2nd stages solenoid valve opening) must be adjusted to an
intermediate position between the Low and High Flame ones (to an angle
approximately 5° greater than the low flame position).
LANDIS & STAEFA SQN 30 151A2700 AIR DAMPER MOTOR
MANUAL RELEASE
SWITCH
LANDIS LGB 22 UP-CYCLE
The control box starts the burner fan, to carry out the prepurging
of the combustion chamber, and cheks the vent air pressure
through 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 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.
t1
t2
t3
t2
t3
t5
t4
t6
t1
t5
t4
Lock out lamp
Flame detection
Gas valve
High flame ON/OFF
Transformer
Air pressure switch
Motor
Gas pressure switch
Normal operative cycle ignition
Operative cycle with flameless
Description
t1 pressure switch control time-out 9"
t2 time-out for air pressure confirmation 3"
t3 prewashing time 30"
t4 safety time 3"
t5 preignition time 3"
t6 time-out to enable fuel 2nd valve 8"

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