Sime Planet Super 4 F.S., Installation & Servicing Instructions Manual

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14
4.2 TEMPERATURE SENSORS
AND WATER PRESSURE
TRANSDUCER
Tables 5 - 5/a show the resistance values
(
Ω
) that are obtained on the sensors as the
temperature varies and the transducer
when the pressure varies.
With the C.H. sensor (SM) interrupted
the boiler will not function with both
services.
With the D.H.W. sensor (SB) inter-
rupted the boiler functions only with
heating.
4.3 ELECTRONIC IGNITION
The ignition and flame sensing are con-
trolled by two electrodes that guarantee the
maximum safety, with a time of intervention
of one second for accidental switching off or
lack of gas.
4.3.1 Functioning cycle
Turn the selector knob to summer or winter
and note, from the lighting up of the green
led ( ), whether electricity is present.
The starting up of the burner should take
place within a maximum of 10 seconds.
We can summarise the manifestations of a
failure to start, with consequent activation
of the failure signal as follows:
– Gas failure
The ignition electrode continues to spark
for a maximum of 10 seconds, the pilot
burner does not start, the blockage indi-
cator lights up.
This may occur at the first ignition
attempt or after long periods of inactivity
with the presence of air in the tubing.
May be due to the gas cock being closed
or a break in the valve coil, which do not
allow opening.
– The ignition electrode does not give a
jump spark
In the boiler only the gas opening to the
burner is noted, after 10 seconds the
block signal lights up.
May be due to the fact that the cable of the
electrode is interrupted or is not well fixed
to the terminal of the ignition transformer.
– The flame is not detected
From the time of the ignition a continuous
jump spark from the electrode is noted
despite the burner being lit. After 10 sec-
onds the sparking stops, the burner
goes off and the block signal lights up.
The cable of the detector electrode is
interrupted or the electrode itself is
earthed; the electrode is very worn and
needs to be replaced.
The control board is faulty.
Due to a sudden fall in electricity the burner
is immediately arrested, once the electricity
is restored, the boiler will automatically
restart.
4.4 SMOKE PRESSURE SWITCH
The switch with a fixed setting 3.5-4.5 mm
H
2
O, is able to guarantee the functioning
of the boiler with inlet and outlet pipes at
the maximum limit length allowed.
The value of the smoke pressure switch
signal is measured with a special instru-
ment connected to the positive and nega-
tive pressure plugs on the upper part of
the sealed chamber.
4.5 MAINS ELECTRICITY
CONNECTION
Use a separate electric line to link up the
room stats and relative zone valves or
pumps.
The connection of the micros or the relay
contacts is carried out on the connector of
control board (J2) after having removed
the existing bridge (fig. 18).
15
13
1
3
5
7
8
9 10 11
12
14
6
6 10
KEY
1 Ignition electrode earth faston,
3 Fuse (1.6 AT)
5 Connector “ANN. RIT.”
6 Trimmer “POT. ACC.”
7 Connector “MET-GPL”
8 D.H.W. potentiometer
9 Detection electrode faston
10 Trimmer “POT. RISC.”
11 C.H. potentiometer
12 Selector CR/OFF/EST/INV/UNBLOCK
13 DIP SWITCH
14 Connector “Modureg Sel.”
15 Connector “Albatros”
Fig. 17
NOTE: In order to have access to the regulating trimmer, (6) and (10), take out
the C.H. potentiometer knob.
TABLE 5 (Sensors)
Temperature (°C) Resistance (
Ω
)
20 12,090
30 8,313
40 5,828
50 4,161
60 3,021
70 2,229
80 1,669
TABLE 5/a (Transducer)
Pressure Resistance (
Ω
)
(bar) min max
0 297 320
0.5 260 269
1 222 228
1.5 195 200
2 167 173
2.5 137 143
3 108 113
3.5 90 94