Operating Cycle - Sime Planet Dewy 25 BF Manual Del Usuario

vers. "PLANET DEWY 25 BF - 30 BF"
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vers. "PLANET DEWY 25 BFT - 30 BFT"
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3.2 TEMPERATURE SENSOR
AND WATER PRESSURE
TRANSDUCER
Tables 3 - 3/a show the resistance values
(Ω) that are obtained on the sensor as the
temperature varies and the transducer
values obtained as the pressure varies.
When sensor (SM) is interrupted, neither
of the boiler's heating services will func-
tion. With D.H.W. sensor interrupted, the
boiler will only work in heating mode.
TABLE 3 (Sensors)
Temperature (°C) Resistance (Ω)
20 12.090
30 8.313
40 5.828
50 4. 1 61
60 3.021
70 2.229
80 1.669
11 10 9
11 9 10
TABLE 3/a (Transducer)
Pressure
(bar)
0
0,5
1
1,5
2
2,5
3
3,5
3.3 ELECTRONIC
IGNITION
Ignition and flame detection is controlled
by two electrodes located on the burner.
These guarantee maximum safety with
intervention times, for accidental swit-
ching off or gas failure, of within one
second.
8
6
7
6
15
KEY
1 Ignition electrode earth faston
2 Ignition electrode faston
3 Fuse (1,6 AT)
4 Fuse(0, 1 6 AT)
5 "ANN. RIT." connector
6 "POT. ACC." trimmer
7 Conector "MET-GPL"
8 D.H.W. potentiometer
9 Detector electrode faston
10 "POT. RISC." trimmer
11 C.H. potentiometer
12 Selector CR/OFF/EST/INV/RESET
13 DIP SWITCH
14 Connector "Modureg Sel."
15 Connector "Albatros"
7
NOTE: To gain access to trimmers (6) and
(10), unscrew the central heating potentiome-
ter knob.
8
6
13
3.3. 1
Resistance (Ω)
Rotate the selector knob to summer or win-
mín máx
ter, and verify that green led (
297 320
confirm the presence of voltage.
260 269
The boiler is now ready to start working
222 228
upon demand for heating or drawing off
195 200
of D.H.W.; a discharge current is sent to
167 173
the ignition electrode through the pro-
137 143
grammer, and the gas valve opens at the
108 113
same time. The burner must be ignited
90 94
within 10 seconds. However, it is possible
for ignition failures to occur, with conse-
quent activation of signal indicating that the
control box has "locked out".
– Gas failure
The control box runs through the cycle
normally sending electric power to the
ignition electrode. The electrode conti-
nues spark discharge for a maximum of
10 sec.If the burner does not light, the
lock-out indicator will light up.
10
Fig. 20

Operating cycle

) lights up to
109