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•
With the switch on the burner panel at the position “0” and the
main switch on, check, closing the contactor manually, that the
motor rotates in the right direction. If necessary, swap the two
power cables for the motor around to change the direction of
rotation.
• If using the inverter, see the specific instructions in the quick
guide.
•
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 regu-
lation, refer to the supplied instructions for the electronic cam.
•
After having adjusted the “minimum”, (200) bring the burner to
the maximum, using the controls on the electronic cam keybo-
ard.
•
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.
•
Check combustion using the appropriate instrument at all in-
termediate points on the modulation route (from minimum to
maximum load), checking also the gas flow rate reading the
meter.Now, check for the efficiency of automatic modulation
operation by switching the ETAMATIC apparatus to the “AUTO-
MATIC” position. With this setting modulation will start only by
using the automatic control of the boiler probe.
FLAME SENSOR
Verify the flame detector operation as follows:
•
Disconnect the wire coming from the ionisation electrode;
•
Start up the burner;
•
The control box will complete the control cycle and after two
seconds will lock the burner due to the lack of ignition flame;
•
switch off the burner;
•
Re-connect the wire to the ionisation electrode.
•
This test should be carried out with the burner already on; the
apparatus should lock out immediately when the wire from the
ionisation electrode is disconnected.
• Check for the efficiency of the thermostats or boiler pressure
switches (they should shut down the burner when triggered).
AIR PRESSURE SWITCH
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.
If the air pressure switch does not detect a pressure greater than
that calibrated, the equipment runs through its cycle but does not
switch on the ignition transformer and does not open the gas val-
ves and so the burner “locks-out”.
To ensure correct operation of the air pressure switch you must,
with burner on and in 1st stage, increase its regulation value until
the burner triggers and then it immediately “locks-out”.
Release the burner by pushing the appropriate button and rea-
djust the pressure switch to a sufficient value to detect the existing
air pressure during the pre-ventilation phase of the first stage.
Air pressure sampling point is downstream the air damper.
Summary of Contents for TBML 50 ME
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