Ecoflam BLU 1700.1-20 PAB Mode D'emploi page 10

420010350800 Blu 1700.1÷2000.1 P AB
EN
Natural Gas
CO 9,6%
2
CO <50 ppm
L.P.G.
CO 11,7%
2
CO <50 ppm
Gas pressure switch
Air pressure switch
High flame ON/OFF
Flame detection
Lock out lamp
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.
1,3
30
25 1,25
20 1,2
15 1,15
10
1,1
10
LANDIS LGB 22 UP-CYCLE
Normal operative cycle ignition
t3
t2
Motor
t1
Transformer
Gas valve
LANDIS & STAEFA SQN 30 151A2700 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 -
II -
III -
V -
NOTE :
Cam V (to allow the 2nd stage's 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).
1,2
20 30 40 50 60 80 100
70 90
THERMAL POWER (kW)
Operative cycle with flameless
t4
t2
t1
t5
t6
Description
t1 pressure switch control time-out
t2 time-out for air pressure confirmation
t3 prewashing time
t4 safety time
t5 preignition time
t6 time-out to enable fuel 2nd valve
Limit switch for air damper "High Flame" position adjustment
(Max. power)
Limit switch for the air damper position at burner's shut down
Limit switch for air damper "Low Flame" position adjustment
(Min. power)
Limit switch for 2nd stage's solenoid valve opening release
pag.10
200 300 400 600 800 1000
500 700 900
t3 t4
t5
9"
3"
30"
3"
3"
8"
1,2
2000