baltur BGN 450 ME, Installation, Use And Maintenance Instruction Manual

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ENGLISH
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STARTING UP AND REGULATION
• Check that thee voltage on the mains meets the manufacturer
requirements and that all electrical connections made at the
installation site are performed properly as illustrated in our
wiring diagram.
• Verify that the discharge of combustion fumes through the boiler
shutters, flue shutters can take place 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 devices.
• Make sure that the combustion head is long enough to enter
the furnace following the measure specified by the boiler
manufacturer.
• Bleed out the air contained in the gas piping, with due
precautions 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.
I
sinottico_lamtecBT3xx
1 3 5
2
4
1 - Main On/Off switch
2 - Fuse
3 - Display
4 - Confirm or RESET key
5 - Programming keys
• 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
necessary, 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
regulation, 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
appropriate 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 for the proper automatic operation of modulation.
This ensures that the equipment receives the signal from the
electronic modulation regulator, if the burner is the modulating
model, or from the second stage thermostat or pressure switch,
in the case of a two stage progressive burner.
The air pressure switch has the purpose of switching the
equipment into the safety (lock-out) state if the air pressure is not
what it should be.
The pressure switch must therefore be adjusted so that it is
triggered 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.