C.I.B. UNIGAS - M039134CD
24
OPERATION
Single-stage burners
z
Turn on the burner using the switch
A
on the control panel (: the control panel of the single stage burner is only provided with the
power switch and the fuse).
z
Make sure that the control box is not in shutdown condition and if so, release by using the release button
S
on the burner cover
(see Fig. 37).
z
Make sure that the set of thermostats (or pressure-switches) enables burner operation.
z
The burner starting cycle begins and the control box 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
z
Turn on the burner using the switch
A
on the control panel (Fig. 36).
z
Make sure that the control box is not in shutdown condition and if so, release by using the release button
S
on the burner cover
(see Fig. 37).
z
Make sure that the set of thermostats (or pressure-switches) enables burner operation.
z
The burner starting cycle begins and the control box starts the burner fan while the ignition transformer switches on at the same
time; pre-ventilation lasts for 13 or 25 seconds depending on the control box provided with the burner.
z
At the end of pre-ventilation, the fuel solenoid valve (1st stage, EVG1) receives input as signalled by the illumination of the signal
light
H
on the control panel and the burner starts.
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 and the corresponding signal light switches off.
z
In this way, the burner is lit at low flame; after 5 or 15 seconds (depending on the control box installed) two-stage operation begins
and the burner is either automatically brought to high flame (light
G
on) or remains burning at low flame (light H on) depending on
the requests received from the system.
Burner control panel
Fig. 36
Keys
A
Main switch
B
High flame lamp
C
Low flame lamp
D
Ignition transformer ligh
E
Lockout signalling lamp
F
Fuse
G
High flame solenoid valve operation light
H
Low flame solenoid valve operation light
S
Reset pushbutton (Fig. 37)
Fig. 37
A
D
C
B
F
G
H
E
S
