Overall Dimensions; Electrical Connections - Ecoflam BLU 500.1 PR Manual Del Usuario

420010250900 BLU 500.1 ÷ 1200.1 PR SW
EN
MODELS
BLU 500.1 PR
BLU 700.1 PR
BLU 1000.1 PR
BLU 1200.1 PR
All burners factory tested at 400 V 50 Hz three-phase for motors and 230 V 50 Hz monophase with neutral for
auxiliary equipment. If mains supply is 230 V 50 Hz threephase withuot neutral, change position of connectors on
burner as in fig. Protect burner supply line with safety fuses and any other devices required by safety standards
obtaining in the country in question.
Once connected the burner to the gas pipeline, it is necessary to control that this last is perfectly sealed. Also
verify that the chimney is not obstructed. Open the gas cock and carefully bleed the piping through the pressure
gauge connector, then check the pressure value trough a suitable gauge. Power on the system and adjust the
thermostats to the desired temperature. When thermostats close, the sealing control device runs a seal test of val-
ves; at the end of the test the burner will be enabled to run the start-up sequence.
Before lighting the burner, make sure that it has been installed correctly. Check the electric wiring against the dia-
grams and the piping in the plant. Before making the electrical connection, make sure that the voltage coincides
with the data specified on the nameplate indicating the technical features. The diagram of the electrical connection
and the starting cycle are illustrated separately. To connect the equipment to the burner, refer to the diagram. Pay
particular attention to the connection of the neutral and phase: never switch them around. Check the earthing con-
nection for the plant. For the three-phase motors, check the motor's sense of rotation (see arrow). Bleed off any air
and contaminants in the gas pipe. Mak sure that the gas pressure is within the range specified on the nameplate.
This must be done with a pressure gauge in the pipe tap on the burner. Start the motor and begin preventilation.
The motor reducer brings the air damper into the fully open position within about 30 seconds. When the motor
NdT: air damper is fully open, a signal to the electronic control equipment triggers a preventilation cyce that lasts
about 66 seconds At the end of the preventilation phase, the motor reducer adjusts the damper to suit a low flame,
enabling the the burner to be ignited on minimum capacity. At the same time, the ignition transformer is powered
and, three seconds later (pre-heating), the gas valves are powered. At this point, the butterfly valve adjusts the gas
flow in the combustion head. Two seconds after the valves have opened, the transformer is cut off from the circuit.
If the burner has not been ignited, it cuts out within 2 seconds. The burner is ignited on minimum capacity (about
30% of the maximum capacity). The modulator will open the servomotor on maximum capacity or will hold it on the
intermediate capacity required by the plant. The opening of the servomotor will open the gas and air flows propor-

OVERALL DIMENSIONS

E D - D1
N
A B C D
650 330 320 175 395 555 190 376 215• 190 190 M10 140 165
650 330 320 175 395 555 190 376 215• 190 190 M10 140 165
650 330 320 175 395 555 190 376 215• 190 190 M10 140 165
670 350 320 310 460 555 200 376 215• 190 190 M10 140 165

ELECTRICAL CONNECTIONS

CONNECTION TO THE GAS PIPELINE
START UP OF THE BURNER
A
B C
O
D1 E F G
10
I
M
D = short head D1 = long head
• = ( Optional)
Dimensions (mm)
H I L M N O