Sime RS Mk.II Serie Instrucciones Para El Instalador Y El Usuario página 62

Refer to the wiring diagram in fig. 13 for
electrical connections.
WARNING: to grant the correct opera-
tion of the plant set the boiler thermostat
at the maximum value.
2. 1 6. 1 Features and functions
"RVA 43.222" is realized as regulator of
one boiler mono or bi-stadium or regulator
of cascade connections to manage 16 boi-
lers maximum.
Economical operation
– Heat production may be turned on or off
in the presence of integration with accu-
mulation.
– Boiler temperature control on the basis
of climate, permitting environmental
compensation.
– Direct heating circuit management (with
pump) for each controller.
– Automatic adaptation to climatic curve on
the basis of the building's thermal inertia
and the presence of "free heat" sources
(with environmental compensation).
– On/off optimisation (accelerated heating
and early off feature).
– Daily economy function calculated on the
basis of the dynamic characteristics of
the building.
– Automatic summer/winter switch.
Protective functions
– Minimum and maximum delivery tempe-
rature settings.
– Differentiated anti-freeze protection for
boiler, ho t wat er t ank and heating
system.
62
KEY
1 Control unit connectors (black - red - brown)
2 Fuse (T 4A )
3 Terminal board
– Boiler overheating protection.
– Pump seizing up protection.
– Burner protection with minimum opera-
ting temperature.
Operative functions
– Simplified start-up.
– All calibration operations are performed
on control unit.
– Standard weekly programming.
– All calibration operations and operating
settings can be read on leds and display.
– Relay and probe tests.
Hot water production
– Daily scheduling.
– Minimum hot water delivery temperatu-
re may be set for reduced time period.
– Control of hot water tank filling pump.
– Selectable priority of hot water circuit.
2 1 3
Other technical features
– Easy connection with digital environmen-
tal unit (QAA 70).
2. 1 6.2 Electrical connection
The electrical circuit includes a series of
connectors for installation of an optional
control unit, marked with different colours:
black, red and brown (fig. 14/a).
Connectors are polarised so that order
cannot be inverted. To install the control
unit, connect these connectors and remo-
ve jumpers 12 -13 and 15 - 16 from the ter-
minal board (fig. 13). The control unit also
permits use of room temperature control
units and probes; polarised, coloured con-
nectors for these are located in a bag insi-
de the control panel.
Fig. 14/a