baltur 67500010, Installation, Use And Maintenance Instruction Manual

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ENGLISH
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0006160227_201702
Release the burner by pressing the appropriate button and
readjust the pressure switch until preventilation air pressure can
be detected.
Adjust the setting of the pressure switch to a level slightly below
the actual air pressure detected in first stage operation. Reset the
burner and check that it starts up correctly.
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.
The maximum pressure switch makes use of the NC (normally
closed) contact which is closed when the pressure switch detects
a pressure lower 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.
It is essential to check that the burner is functioning correctly at the
time of the first ignition.
• Check that the flame detector (ionisation electrode) disconnects
the ionisation cable and activate the burner.
The equipment must run through its cycle completely and, three
seconds after the ignition flame has formed, “lock-out”.
This test should also be performed with the burner already on.
The control box should lock out immediately when the connector
is disconnected.
Adjustment before switching on the burner:
regulate the pressure switch for minimum pressure at the minimum
value of the scale, regulate the pressure switch for the maximum
value at the maximum value of the scale.
Regulation after the burner setting:
With the burner running at maximum output, regulate the pressure
switch for minimum pressure by increasing the setting value until
the burner shuts down, read the value on the regulation ring and
set it to a value diminished by 5 mbar.
With the burner running at maximum power, regulate the pressure
switch for maximum pressure, diminishing the regulation value
until the NC (normally closed) contact opens. Read the value on
the regulation ferrule and set it to a value increased by 5 mbar.
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).
The minimum setting pressure switch intervenes and stops the
burner. The burner stays in stand-by until the pressure is restored
and lies within the values required for operation.
After that, the burner re-starts in an autonomous way following the
ignition sequence.
• Check for the efficiency of the thermostats or boiler pressure
switches (they should shut down the burner when triggered).
IMPORTANT
In case only one pressure switch is installed on the gas
train, it must be a pressure switch for minimum pressure.
• Check the triggering of the flame detector (ionisation
electrode).Disconnect the ionisation electrode lead and activate
the burner.The equipment must run through its cycle completely
and, three seconds after the ignition flame has formed, “lock-
out”.This check must also be carried out when the burner is
already on. Disconnecting the ionisation electrode lead, the
equipment must immediately go into its “lock-out” action.
• Check the efficiency of the thermostats or boiler pressure
switches (they should shut down the burner when triggered).