CALEFFI SATK40 Series Instruções de instalação, colocação em funcionamento e manutenção - Página 5

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CALEFFI SATK40 Series Instruções de instalação, colocação em funcionamento e manutenção
Electronic regulator
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1
Operating principle
All heating and domestic hot water functions offered by SATK40
series HIUs are controlled by a digital temperature regulator.
Automatic controller functions
• Reset of diverter/modulating valves
Immediately after the power supply has been switched on, the
position of the installed diverter/modulating valve is reset.
• Pump anti-seizing
When the pump is not in use, it is powered on for a period of
5 seconds every 24 hours.
• Diverter/modulating anti-seizing cycle
The anti-clogging cycle for the diverter/modulating valves is run
every 24 hours.
Connection to the chrono-thermostat
The SATK series HIU is fitted for connection to a thermostat or
chrono-thermostat, both standard and OpenTherm, for room
temperature adjustment.
The connection to this device (potential-free contact) must be
made with the two-wire cable marked with the label shown below.
Should it be necessary to extend this cable, use one with the same
cross-section (max 1 mm
) and maximum length 30 m.
2
WARNING!
DO NOT CONNECT EXTERNAL
VOLTAGE SUPPLY TO THESE
TERMINALS
ATTENZIONE!
NON ALIMENTARE IN TENSIONE
Raumthermostat
(Potenzialfreier Kontakt)
Sonde d'ambiance
(Contact sec)
Termostato ambiente
Termostato de ambiente
(Contatto pulito)
(Contacto sin potencial)
Room thermostat
Ruimtesensor
(Volt free connection)
(Schoon contact)
User interface
The user interface, built into the PCB, consists of the following
devices:
• LED indicator
The various functions and faults are signalled by either flashing or
steady illumination of the LEDs.
- Electric supply 230 V (ac)
ON
- Domestic cycle
DHW
- Heating cycle
CH
FAULT - Fault detected
• RESET key
This allows restoration of normal function after the safety thermostat
has been triggered and activation/deactivation of the floor slab
heating function.
• Trimmers for set point settings
They allow the setting of the temperature set point for the operating
cycles and view the relative value on the display.
• LCD display
Shows programmed set point temperatures and error codes.
• Dip switches
Allow set-up of the various models and enabling of optional
functions.
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Definition of simultaneous heating and
DHW cycle times (see page 6)
Heating cycle
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ON