C.I.B. UNIGAS
- M039136CC
19
OPERATION
z
Connect voltage using the boiler's master power switch.
z
Make sure that the flame control device has not shut down and reset if necessary using the reset button pressing the clear rubber
seal on the burner cover.
z
Make sure that the set of thermostats (or pressure-switches) triggers burner operation.
z
The burner starting cycle begins: the flame control device switches on the burner's fan and the ignition transformer switches on at
the same time.
z
At the end of the pre-ventilation time, the light oil solenoid valve is powered and the burner ignites.
z
The ignition transformer stays ON for a few seconds after the ignition of the flame (post-ignition time) and at the end of this time is
switched off by the circuit.
Single stage burners
z
Set the burner main switch on the burner control panel to ON position.
z
Make sure that the apparatus is not in shutdown condition and if so, release by using the release button on the burner control
panel.
z
Make sure that the set of thermostats (or pressure-switches) enables burner operation.
z
The burner starting cycle begins and the apparatus starts the burner fan while the ignition transformer switches on at the same
time.
z
At the end of pre-ventilation, the fuel solenoid valve receives input and the burner switches on.
z
The ignition transformer remains switched on for a few seconds after the ignition of the flame (post-ignition time) after which it is
disconnected from the circuit.
Double stage burners
1
Set Switch G on the burner control panel in ON position.
2
Make sure that the apparatus is not in shutdown condition and if so, release by using the release button on the burner control
panel.
3
Make sure that the set of thermostats (or pressure-switches) triggers burner operation.
4
The burner starting cycle begins and the apparatus starts the burner fan while the ignition transformer switches on at the same
time; pre-purge lasts for some seconds depending on the apparatus provided with the burner.
5
At the end of pre-purge, the fuel solenoid valve (1st stage, EVG1) receives input as signalled by the illumination of the signal light
on the control panel and the burner starts.
6
The ignition transformer remains switched on for a few seconds after the ignition of the flame (post-ignition time), after which it is
disconnected from the circuit and the corresponding signal light switches off.
7
In this way, the burner is lit at low flame; after some seconds (depending on the apparatus installed) two-stage operation begins
and the burner is either automatically brought to high flame or remains burning at low flame depending on the requests received
from the system. Operation at high or low flame is signalled by the illumination or switch-off of the respective signal lights A and F
on the control panel; signalling light shows the opening of the solenoid valve that supplies the 2nd stage nozzle (high flame).
