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18-INFORMATION MENU
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• External probe
It makes it possible to work with system temperature adjustment. If installing an external probe on terminals 1 and 2 (NTC 10KOhm at
25°C b=3435) water temperature is automatically calculated by the electronics based on external temperature according to the curves
shown below:
The external probe must be installed on an external wall exposed towards North or North-West. If necessary, it is possible to correct the
value read by the probe by + 5 -5°C.
• Storage cylinder probe
To activate this option, connect a probe (NTC 10KOhm at 25°C b=3435) to points 1 and 2 of the back 12-pole terminal board.
The heat request occurs when the storage cylinder probe reads a temperature that is 2°C below the one set by the accumulation
temperature marked by a tap in the temperature menu.
• Storage cylinder thermostat
To activate this option, connect a Normally Open (N.O.) contact thermostat to points 1 and 2 of the back 12-pole terminal board.
The heat request occurs when the storage cylinder thermostat closes the contact.
• Puffer probe
To activate this option, connect a probe (NTC 10KOhm at 25°C b=3435) to points 1 and 2 of the back 12-pole terminal board.
The heat request occurs when the storage cylinder probe reads a temperature that is 2°C below the one set by the accumulation
temperature marked by a radiator in the temperature menu.
During installation with the puffer, stove operation is only and exclusively determined by the puffer probe and not by the room probe. The
room probe on the stove is only to control the heating system pump controlled by the NO potential-free contact: if the system pump is
activated in Aux out mode (max 5 ampere, not suitable for brushless pumps with upper start-up current) on terminals 8-9.
Summary of Contents for EGO-STAR Hydromatic 12
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