Beretta CONNECT MIX STAND ALONE Instrucciones Para El Instalador Y El Servicio De Asistencia Técnica página 10

FIRST STARTING UP
Before switching the Connect MIX STAND ALONE on, chec k that
the electrical and plumbing connections have been formed cor-
rectly.
FIG. 10
During testing, the temperatures can be checked due to the two
thermometers.
CIRCULATION PUMPS
The Connect MIX STAND ALONE is supplied with circulation units
with a three-speed control.
Choose the best speed to suit the specific characteristics of the
systems.
RELEASING THE PUMPS IF NECESSARY
If the unit has been inactive for a lengthy period of time and the
circulation units are stuck, unscrew the caps on the front and turn
the shaft for the circulation unit motor using a scre wdriver.
Do this extremely carefully so as not to damage the components
themselves.
HEATER ANTI FREEZE FUNCTION FOR LO W TEMPERATURES
The function is activated when the temperature measured by the
supply probe falls below 5°C. A heat request is generated at this
phase and the low temperature circuit pump is run for 15 minutes.
PUMP ANTI BLOCK FUNCTION
The pump is activated once every 24 hours for a period of 10
seconds.
LOW TEMPERATURE APPLIANCE SETTING
FIG. 11
The supply temperature to the low temperature plant may be set
by regulating the trimmer on the board.
POS 1 2
T (°C) 25 30
HIGH TEMPERATURE APPLIANCE SETTING
Fix the boiler central heating knob to the high temperature
appliance desidered value.
THERMOREGULATION
Heat adjustment only works with the external probe connected,
therefore, after installation, connect the external probe to the rela-
tive connections on the board (S.EXT - fig. 8).
This enables the THERMOREGULATION function.
Selecting the offset heating curve
The offset heating curve maintains a theoretical ambient tempe-
rature of 20°C at external temperatures ranging from +20°C to -
20°C. The choice of the cur ve depends on the r ated minim um
external temperature (on the geographical area, therefore) and
the rated delivery temperature (on the type of system, therefore)
and must be carefully calculated by the fitter using the following
formula:
Nominal delivery - 20
KT=
20 - min. rated external T
The KTL must be selected via the trimmer on the board.
3 4 5
35 40 45
The correspondence between the KT and the trimmer position is
indicated in the graph at figure 12.
KT 0,4 0,7
TRIMMER 1 2
A - plant supply temperature (°C)
B - external temperature (°C)
CHECKS AFTER INST ALLATION
- Check that the heating system is pressurised.
- Check that the main switch for the plant works.
- Check the plumbing circuits for leaks.
- Check that the plumbing and electrical connections are correct.
- To call for heat from a mixed system, check that the mixing valve
opens and closes correctly.
If even one of these checks provides a negative result, the system
must not be started up.
CLEANING
Before cleaning the Connect MIX STAND ALONE in any way dis-
connect the mains power supply by switching the main switch to
"OFF".
The panels must be cleaned with a cloth, using soap and w ater.
If stubborn stains are found, use a cloth with a 50% water and
denatured alcohol mixture, or use specific products.
Once cleaning is complete , dry carefully.
Do not use abrasive products, benzene, or trichloroethylene.
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1 1,5 1,7
3 4 5