pag.9
techniques for energy saving
LB1203
MULTICALOR 300.1÷400.1
HYDRAULIC CIRCUIT
VS
V2
V1
4
5
V3
VS
V2
V1
4
5
1
1
2
3
1
-
HOSE
2
-
OIL FILTER
3
-
OIL COCK
4
-
SUCTION
5
-
RETURN
OPERATION OF BURNER WITH LIGHT-OIL FUEL MULTICALOR 300.1-400.1
Once installed the burner, check the following items:
- The burner power feeding and the main line protection fuses
- The correct length of pipes and that the same are sealed.
- The type of fuel, which must be suitable for burner.
- The connection of boiler’s thermostats and all the safeties.
- The motor rotation direction.
- The correct calibration of the motor’s thermal protection.
When all the above mentioned conditions are checked and accomplished, it is possible to go on with burner’s tests. Power the
burner. The control box feeds the ignition transformer and the burner’s motor at the same time, which will run a prepurging of
the combustion chamber. At the end of prepurging, the control box powers up the ignition transformer and opens the light-oil
valve, so the burner start . the servomotor will set up to the light-oil ignition position, whilst the control box powers up the
ignition transformer and the “Safety” and “Low flame” solenoid valves. After a safety interval of 2 seconds and a correct igni-
tion, the control box turns off the ignition transformer and, 10 seconds later, sets the motorised air damper to its maximum
opening and opens the 2nd stage solenoid valve (Multicalor 300.1) and 3rd stage solenoid valve (Multicalor 400.1). In case of
faulty ignition,the control box will shut down the burner in 2 sec.
In order to obtain a correct combustion, it shall be necessary to adjust the Low and High flame by following the instructions of
the Air servomotor and firing head adjustment.
During such a phase, it will be possible to manually switch between HIGH and LOW flame and viceversa, through the
High/Low flame switch. At the end of the adjusting phase, leave the switch in position “AUTO”. The fuel pump feeding pres-
sure, must remain around 12 bar.
0
1
2
0 - STOP
1 - GASOLIO
2 - GAS
Multicalor 300.1
Multicalor 400.1
LIGHT-OIL
