baltur TBG 35 ME, Installation, Use And Maintenance Instruction Manual

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ENGLISH
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0006160161_201711
NATURAL GAS IGNITION AND REGULATION
• 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 the time necessary for the gas in the room to disperse outside.
Re-connect the burner to the gas pipeline.
• 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.
• 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.
• Make sure that the combustion head is long enough to enter the
furnace following the measure specified by the boiler manufacturer.
• 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 powers on the control device,
and the programmer turns on the burner as described in the
chapter "Operation description". For burner adjustment, refer to the
instructions for the electronic cam supplied.
• After having adjusted the “minimum”, (200) bring the burner to the
maximum, using the controls on the electronic cam 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 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, if it is a two stage
progressive burner.
The air pressure switch stops the equipment operation if air pressure
is not at the expected value.
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.
Release the burner by pressing the appropriate button and readjust
the pressure switch until preventilation air pressure can be detected.
The gas pressure switches (minimum and maximum) prevent
the burner from operating when gas pressure is not between the
expected range.
The minimum value pressure switch makes use of the NO (normally
open) contact which is closed when the pressure switch detects a
pressure higher than its own setting.
Adjustment of minimum and maximum pressure values on the
pressure switches must be performed when testing the burner, on the
basis of the pressure measured in each case.
The triggering (opening of the circuit) of any of the pressure switches
when the burner is running (flame on) causes the burner to stop
immediately.
The pressure switches are connected so that, the operation (i.e.
opening of the circuit) of one of the switches makes the burner shut
down immediately if it is working (flame lit).
• Check for the efficiency of the thermostats or boiler pressure
switches (they should shut down the burner when triggered).