Characteristics; Control Box - Sime RMG Mk.II Serie Instrucciones Para El Instalador

2.7 CONTROL SYSTEM
RVA43.222 (optional)
All the boiler functions can be operated
by the optional control system code
8096303, supplied with external tem-
perature sensor (SE), boiler immersion
sensor (SC) (fig. 7). Another series of
low tension connectors may be con-
nected to the control system, these
are used for the connection of the sen-
sors 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 tem-
perature sensor (SE) follow the instruc-
tions given on the packaging of the sen-
sor.
For the electrical connection refer to
the diagram in fig. 6.
WARNING: to grant the correct
operation of the plant set the boi-
ler thermostat at the maximum
value.
2.7. 1 Characteristics and functions
"RVA 43" is realized as regulator of
one boiler mono or bi-stadium or regu-
lator of cascade connections to mana-
ge 16 boilers maximum.
Operating Efficiency
– Qualification or not of the heat pro-
duction in the presence of integra-
tion with storage.
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 electronic control and pro-
tection, with a built-in transformer,
located inside the instrument panel
protection box. Ignition and flame
detection is controlled by two electro-
des located on the burner.
These guarantee maximum safety with
intervention times, for accidental swit-
ching off or gas failure, within 8
seconds (fig. 8).
KEY
1 Plastic hole cover
2 Control system
– Climatic control of the temperature
of the boiler, with the possibility of
room compensation.
– Operation of a direct heating circuit
(with pump) for each regulator.
– Auto-adjusting function of the clima-
tic curve on the basis of the thermal
inertia of the building and the pre-
sence of "free heat" (with compen-
sation).
– Optimising function of the ignition
and turning off (speeded up heating
and turning off before time).
– Saving function calculated on a daily
basis according to the dynamic cha-
racteristics of the structures.
– Automatic summer/winter swit-
ching
Safety Functions
– Minimum and maximum adjustable
temperature of return
– Differentiated antifreeze protection,
hot water storage and plant.
– Protection from overheating of the
boiler.
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
– Antiscuff protection of the pumps.
– Protection of the burner with mini-
mum 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
t emperature for the hot wat er
during the reduction period.
– Possibility of controlling the storage
loading pump.
– Hot water circuit priority can be
selected.
Other technical characteristics
– Easy connection with a digital envi-
ronment unit (QAA70).
Fig. 7
Fig. 8
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