Systema Eolo 20AE Series - 9 Inspection and Starting up the System; Preliminary Ignition Procedures; Ignition Phases

Gas airtight suspended warm air heaters - EOLO
37
SYSTEMA S.p.A.
Rev. 10EE0112
9 INSPECTION AND STARTING UP THE
SYSTEM
9.1 Preliminary ignition procedures
a) Check that the appliances have been set for the available type of gas (consult paragraph 10.1 on
gas conversion if required), check the mains pressure (see table below) and turn on the gas. Seal
the gas valve adjustment component after regulation.
b) Check that the electrical connection between the burner and switchboard is correct.
c) Position the ambient thermostat for the zone to the required temperature (consult the instructions
provided with the switchboard); the heaters start up.
9.2 Ignition phases
1) The gas pressure switch closes the contact of the phase line, supplying the CM 31F/32F instrument
with power; this then starts the feed procedure.
2) The fume exhaust fan then starts up, triggering the air pressure switch; at this point the instrument
checks the air pressure switch operation and if this is regular the prewash procedure in the combustion
chamber starts; this lasts for a minimum of 20 seconds. FOR FURTHER INFORMATION ON THE
INSTRUMENT REFER TO THE RELEVANT TECHNICAL NOTES.
3) After the prewash procedure, the instrument gives the ignition charge for 5 seconds and the green
telltale lights up simultaneously. If the flame does not ignite, the instrument shuts down and the red
telltale lights up. Press the reset button to restart it.
4) In models with two solenoid valves, the burner ignites at the first flame level and only after receiving
further consent by the CM 32F instrument does it operate at full power.
IMPORTANT:
If the connection S3  B4 are inverted (with electronic thermostat) = the thermostat does not switch on
and does not enable burner operation.
If T1  T2 are inverted = the shut-down telltale lights up with the burner operating.
If phase and neutral are inverted during supply = the burner ignites the flame and then shuts down (10
seconds).
If the burner is reset with the phase signal = the CM 31F/32F control unit is damaged or it will not reset.
If the thermostat is fitted to the main line = the combustion chamber is not cooled and damage is
caused to this and the fan units.
Permanent jumper on terminals S3 and B4 with the heaters switching on and off = same damage as
above.
Check electrical connections: the electrical connections listed below MUST be complied with.