pag.19
EN
420010243004 MULTICALOR 170.1-200.1 PR/PR
M
Air
Gas
313
160
170
144
142
141
120
150
314
349
151
155
100
143
To
be
s
upp
li
ed
by
the
i
n
s
t
all
e
r
To
be
s
upp
li
ed
by
the
i
n
s
t
all
e
r
CONNECTION DIAGRAM FOR BURNERS WITH SEPARATE PILOT
(
GAS TRAIN SIEMENS VGD...)
107
100
Bu
r
ne
r
107
P
il
ot
g
as
f
il
te
r/
go
v
e
r
no
r
120 Air
d
a
m
pe
r
141
B
all valv
e
142 Gas
f
il
te
r
143 A
nt
ivi
b
ra
t
i
on
coup
li
ng
144 Gas
go
v
e
r
no
r
150
B
a
tte
r
f
l
y
valv
e
151 Gas
t
rai
n
S
i
e
m
en
s
V
G
D....
155
P
il
ot
g
as
t
rai
n
160
Kit
t
i
ghtne
ss
cont
r
o
l
(opt
i
on
al)
170
Kit
t
i
ghtne
ss
cont
r
o
l
fo
r
p
il
ot
g
as valv
e
(opt
i
on
al)
313 Mi
n.g
as
p
r
e
ss
u
r
e
s
w
i
tch
314 Max
.g
as
p
r
e
ss
u
r
e
s
w
i
tch
(opt
i
on
al)
349 Air/
g
as
d
a
m
pe
r
m
oto
r
CONNECTION DIAGRAM FOR BURNERS WITH SEPARATE PILOT
(gas train Siemens VGD...)
100
Burner
107
Pilot gas filter/governor
120
Air damper
141
Ball valve
142
Gas filter
143
Antivibration coupling
144
Gas governor
150
Batterfly valve
151
Gas train Siemens VGD....
155
Pilot gas train
160
Kit tightness control (optional)
170
Kit tightness control for pilot gas valve (optional)
313
Min.gas pressure switch
314
Max.gas pressure switch (optional)
349
Air/gas damper motor
ADJUSTING THE COMBUSTION PROCESS
IMPORTANT:
to obtain the right adjustment of the combustion and thermal capacity it is important to analyze the
reducts of combustion with the aid of suitable instruments. The combustion and thermal capacity adjustment is done
simultaneously, together with the analysis of the products of combustion, making sure that the measured values are sui-
table and that they comply with current safety standards. On this matter, please refer to the table and figure below.
THESE OPERATIONS MUST BE DONE BY PROFESSIONALLY-QUALIFIED TECHNICIANS.
NOTE:
ALL SAFETY DEVICES (AIR PRESSURE SWITCH, MINIMUM GAS PRESSURE SWITCH, GAS
SOLENOID VALVES AND GAS GOVERNOR) SHALL BE DULY SEALED AFTER CALIBRATION AND BUR-
NER START UP BY ECOFLAM’S TECHNICIANS.
OPERATION OF BURNER WITH GAS
Before starting the burner, make sure it is mounted correctly. Then check connections
are correct according to the diagram and piping is appropriate to the system. Before
connecting the burner to the electricity supply, make sure voltage corresponds to burner
plate data. The connection diagram and start-up cycle are shown separately. For wiring
from control box to burner, see the enclosed connection diagram. Pay particular atten-
tion to neutral and phase connections : never exchange them!. Vent air and impurities
of gas pipe. Check gas pressure conforms to the limits stated on the burner plate when
connecting a master gauge to the test port provided on the burner. Blower motor starts
and pre-purging begins. Since pre-purging has to be carried out with the max. air deli-
very, the burner control circuit turns the air damper to the max. delivery position by the air servocontrol in approxima-
tely 30 seconds time. When the servocontrol is fully open, a signal to the electronic control unit starts the 66 seconds
pre-purge cycle. At the end of the prepurging time, the air servocontrol gets to the Low Flame position so that burner
ignition is ensured at min. output. Simultaneously the ignition transformer receives voltage and after 3 seconds (pre-
ignition) opens the pilot gas valve. Fuel flows to the combustion head and ignites. Two seconds after pilot gas valves
have opened, the ignition transformer is excluded from the circuit. In case of no ignition the burner goes to lock-out
within two seconds. After 6 sec. open the working gas valve, governed by the gas firing butterfly valve.Now the burner
is operating at the min. firing rate (about 30% of the max. firing rate). The air servocontrol runs at the Low Flame
position and in case the temperature control has to be set at the max. output it goes to a fully open position of air dam-
per and butterfly valve. During the burner-off periods the air damper closes up fully.
0=STOP
0
3
1
2
3=GAS
2=AUTO
1=OIL
SAgG
