Unigas R512A, Инструкция по эксплуатации

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C.I.B. UNIGAS - M039240CA
31
OPERATION
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Set to “on” the B switch on the burner control panel.
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Check that the contrl box is not in the lockout position (light B on); in case unlock it by pressing the Enter/InFo key (for further infor-
mation on the LMV2.., see the related manual).
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Check that the pressure switches/thermostats series enables the burner operation.
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Check that the gas pressure is sufficient (signalled by an error code on the AZL2.. display).
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At the beginning of the startup cycle, the actuator drives the air damper to the maximum opening position, then the fan motor starts
up: the prepurge phase begins. During the prepurge phase, the air damper complete opening si signalled by the light F on (see
front panel).
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At the end of the prepurge, the air damper is driven to the ignition position, the ignition transformer is energised (signalled by the
light H on the front panel) then, few seconds later, the EV1 and EV2 gas valves are energised (light L and I on the front panel).
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Few seconds after the gas valves opening, the ignition transformer is de-energised and light H turns to off.
The burner operates in the low flame stage; few seconds later the two-stages opertaion begins and the burner output increases or
decreases, driven by the external thermostats (progressive burners) or by the modulator (P in Fig. 14, fully-modulating burners).
Fig. 14
-
Burner control panel
ATTENTION: BEFORE STARTING THE BURNER UP, BE SURE THAT THE MANUAL CUTOFF VALVES ARE OPEN
AND CHECK THAT THE PRESSURE VALUE UPSTREAM THE GAS TRAIN MATCHES THE VALUE ON PARAGRAPH
“TECHNICAL SPECIFICATIONS”). CHECK THAT THE MAINS SWITCH IS CLOSED. CAREF
Key
A Main switch
B Lock-out light
C Reset pushbutton for control box
D Reset pushbutton for gas proving system
(only for burners provided with Siemens
LDU11)
E Gas pressure switch consent
F Lock-out light for gas proving system
G Hi-flame operation light
H Lo-flame operation light
I Ignition transformer operation light
L EV2 opening light
M EV1 opening light
N Fan motor overload tripped light
O Burner in stand-by light
P Burner Modulator (only on fully modula-
ting burners)
M
F
P
A
C
E L
N
G
H
B
I
O
Q
R