Operating Cycle - Sime Planet 25 OF Manual De Instrucciones

"25 OF - 30 OF - 25 BFR - 25 BF - 30 BF" models
12
1
2
3
4
5
"25 BFT" model
1
3
12
5
14
15
cancelled. In this case, the times ela-
psing between turning off and subse-
quent re-ignition will depend on a tempe-
rature difference of 5°C detected by the
SM sensor (heating flow sensor).
– DIP SWITCH (13 fig. 25)
Ensure that the riders are inserted in
the position shown in order:
– Connector Modureg Sel. (14 fig. 25)
With the bridge connected the boiler is
pr edisposed t o function wit h t he
HONEYWELL gas valve.
ATTENTION: It is essential that the opera-
tions described above be carried out by
authorized technical staff.
3.2 TEMPERATURE SENSOR AND
WATER PRESSURE TRANSDUCER
Tables 3 - 4 show the resistance values (Ω)
that are obtained on the sensor as the
11 10 9
11 9 10
temperature varies and the transducer
values obtained as the pressure varies.
When C.H. sensor (SM) is interrupted,
neither of the boiler's heating services
will function. With D.H.W. sensor inter-
rupted, the boiler will only work in hea-
ting mode.
TABLE 3 (Sensors)
Temperature (°C)
20
30
40
50
60
70
80
TABLA 4 (Transducer)
Pressure
(bar)
0
0,5
1
1,5
2
2,5
3
3,5
8
7
6
6
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
7
11 C.H. potentiometer
12 Selector CR/OFF/EST/INV/RESET
13 DIP SWITCH
14 Connector "Modureg Sel."
8
15 Connector "Albatros"
6
NOTE: To gain access to trimmers (6) and (10),
unscrew the central heating potentiometer
knob.
13
3.3
Ignition and flame detection is controlled by
two electrodes located on the burner.
These guarantee maximum safety with
intervention times, for accidental switching
off or gas failure, of within one second.
3.3. 1
Resistance (Ω)
12.090
Rotate the selector knob to summer or win-
8.313
ter, and verify that green led (
5.828
to confirm the presence of voltage.
4. 1 61
The boiler is now ready to start working
3.021
upon demand for heating or drawing off
2.229
of D.H.W.; a discharge current is sent to
1.669
the ignition electrode through the pro-
grammer, and the gas valve opens at the
same time. The burner must be ignited
within 10 seconds.
Resistance (Ω)
However, it is possible for ignition failures
mín máx
to occur, with consequent activation of
297 320
signal indicating that the control box has
260 269
"locked out".
222 228
195 200
– Gas failure
167 173
The control box runs through the cycle
137 143
normally sending electric power to the
108 113
ignition electrode. The electrode conti-
90 94
nues spark discharge for a maximum of
10
Fig. 25
ELECTRONIC IGNITION

Operating cycle

) lights up
119