Control Box - Sime RMG Mk.II Serie Manuel D'installation

2.7 CONTROL SYSTEM
RVA43.222 (optional)
All the boiler functions can be operated by
the optional control system
8096303, supplied with external tempera-
ture sensor (SE), boiler immersion sensor
(SC) (fig. 7). Another series of low tension
connectors may be connected to the con-
trol system, these are used for the con-
nection of the sensors and the environment
unit (the connectors are to be found in a
bag inside the control board). The bulb of
the sensor of the external D.H.W. tank (SS),
optional code 6277110, must be inserted
in the hot water sheath and the boiler probe
(SC) in the boiler sheath. To assemble the
external temperature sensor (SE) follow the
instructions given on the packaging of the
sensor.
For the electrical connection refer to the
diagram in fig. 6.
WARNING: to grant the correct opera-
tion of the plant set the boiler thermostat
at the maximum value.
2.7. 1 Characteristics and functions
"RVA 43" is realized as regulator of one boi-
ler mono or bi-stadium or regulator of
cascade connections to manage 16 boilers
maximum.
Operating Efficiency
– Qualification or not of the heat produc-
tion in the presence of integration with
storage.
– Climatic control of the temperature of
3 CHARACTERISTICS
3. 1

CONTROL BOX

The "RMG Mk.II" boilers are provided with
automatic ignition (without pilot burner).
They are therefore equipped with FM 11
and DTM 12 electronic control and protec-
tion, with a built-in transformer, located insi-
de the instrument panel protection box.
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, within 8 and 4 seconds
(fig. 8).
code
the boiler, with the possibility of room
compensation.
– Operation of a direct heating circuit (with
pump) for each regulator.
– Auto-adjusting function of the climatic
curve on the basis of the thermal inertia
of the building and the presence of "free
heat" (with compensation).
– Optimising function of the ignition and
turning off (speeded up heating and tur-
ning off before time).
– Saving function calculated on a daily
basis according to the dynamic charac-
teristics of the structures.
– Automatic summer/winter switching
Safety Functions
– Minimum and maximum adjustable tem-
perature of return
– Differentiated antifreeze protection, hot
water storage and plant.
– Protection from overheating of the boiler.
– Antiscuff protection of the pumps.
– Protection of the burner with minimum
KEY
1 Electrode support
2 Electrode unit
3 Electrode ignition cable
4 Electrode detection cable
2 1
6
40 °C 80
20 100
0 120
operating time.
Operating functions
– Simplified starting procedure.
– All the settings may be carried out on
the regulator.
– Standard for weekly programming.
– All the settings and operating regimes
available on display and lit up leds.
– Relay and sensor test.
Hot water production
– Programming of day hours.
– Possibility of setting the minimum tempe-
rature for the hot water during the
reduction period.
– Possibility of controlling the storage loa-
ding pump.
– Hot water circuit priority can be selec-
ted.
Other technical characteristics
– Easy connection with a digital environ-
ment unit (QAA70).
KEY
1 Plastic hole cover
2 Control system
Fig. 7
Fig. 8
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