baltur BGN 300 DSPGN ME Installation, Use And Maintenance Instruction Manual page 50

ENGLISH
STARTING UP AND REGULATION
• Check that thee voltage on the mains meets the manufacturer
requirements and that all electrical connections made at the in-
stallation site are performed properly as illustrated in our wiring
diagram.
• Check that the discharge of combustion products through the
boiler gate and flue gate take places freely.
• Check that there is water in the boiler and that the gate valves
of the system are open.
Check that all the gate valves fitted on the fuel suction and return
pipes are open; the same applies to any other fuel shut-off devi-
ces.
• Make sure that the combustion head is long enough to enter
the furnace following the measure specified by the boiler ma-
nufacturer.
• Bleed out the air contained in the gas piping, with due precau-
tions and with doors and windows open.
• Open the union on the pipe near the burner and then open the
shut-off valves a little.
Wait until you smell gas, and then close the valve.
• Wait the time necessary for the gas in the room to disperse
outside. Re-connect the burner to the gas pipeline.
1
I
2
1 - Main On/Off switch
2 - Fuse
3 - Display
4 - Confirm or RESET key
5 - Programming keys
3 5
4
0006160204_201508
• Apply a pressure gauge of appropriate scale to the pressure
intake on the gas pressure switch. If the foreseen amount of
pressure allows it, it is better to use a water column instrument.
Do not use dial instruments for average pressures.
• With the switch -1 on the mimic panel switched to "O" and the
main switch turned on, manually close the remote control switch
and check that the motor revolves in the correct direction. If ne-
cessary, exchange the position of the two cables in the line that
feeds the motor in order to reverse the direction of revolution.
• Now switch on the main switch. This turns on the voltage to
the control box, and the programmer will turn on the burner as
described in chapter "Operation description". For burner regula-
tion, refer to the supplied instructions for the "BT 3xx" electronic
cam.
• After having adjusted the "minimum", (200) bring the burner to
the maximum, using the controls on the "BT 3xx" keyboard.
• We recommend that you check the combustion using the ap-
propriate instrument at all intermediate points on the modulation
route (from 200 to 999), checking the gas flow rate by reading
the meter.
• It is essential to check, using an appropriate instrument, that
the percentage of carbon monoxide (CO) present in the fumes
does not exceed the limit set by the regulations in force at the
time of installation.
• Now check the proper automatic operation of modulation. This
ensures that the equipment receives the signal from the electro-
nic modulation regulator, if the burner is the modulating model,
or from the second stage thermostat or pressure switch, if it is a
two stage progressive burner.
The air pressure switch stops the equipment operation if air pres-
sure is not at the expected value.
The pressure switch must therefore be adjusted so that it is trigge-
red to close the NO contact (normally open) when the air pressure
in the burner reaches a particular value.
The connection circuit of the pressure switch is self-controlling so
that the NC contact (normally closed) which is meant to be closed
in stand-by (fan stopped and consequent lack of air pressure in
the burner), must actually be in this condition. If it does not, the
control box is not switched on (the burner does not start).
Specifically, if the NO contact is not closed (normally open) as
it should be during working (this may be due to insufficient air
pressure), the equipment carries out its working cycle but does not
switch on the ignition transformer and does not open the gas pilot
light valve so the burner shuts down.
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