Neomitis SR - Anti-Freeze Protection; Protection of the Cylinder against High Temperatures; Anti-Legionella Protection

SAFETY FUNCTIONS
ANTI-FREEZE PROTECTION
If the Anti-freeze protection (AF) function is activated, the solar circuit pump is switched on as
soon as the collector temperature sinks below +4°C (adjustable limit). This causes heat to be
pumped through the collector from the lower part of the storage cylinder in an attempt to
prevent the collector from freezing.
If the collector reaches a temperature of +7°C, the pump is switched off again.
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Activating the frost protection function
See installer settings section.
ANTI-LEGIONELLA PROTECTION
PROTECTION OF THE CYLINDER AGAINST HIGH TEMPERATURES
The Anti-Legionella protection (AL/ALEG) is achieved by heating every day the DHW water at
the AL temperature setpoint (T ALEG) for a given time. This function uses either the electric or
the hydraulic auxiliary heating (if both means are enabled, the last one has priority).
This protection is disabled by default, the installer can enable this function or change the ALEG
temperature setpoint in the « Optional function » mode.
The ALEG heating timeout depends on the setpoint temperature (T ALEG):
If the COOL function is not activated (default), the cylinder water heating is stopped once the
temperature in the cylinder reaches T2 SET.
If the COOL function is activated (COOL ON in the « Optional function » mode), the temperature
in the cylinder may rise above T2 SET up to T2 MAX while the collector is being cooled.
This function runs daily 1 hour after the Off-Peak hour Period (OFPP) has started or at 1am (night)
if no OFPP period, except if the DHW has already been heated (as much as required by ALEG)
during the day.
R2 output is switched on (with systems 1/2 only) during the AL cycle in order to run optionally
a recirculation pump intended to boost the heating of the water in the lower part of the
cylinder.
ALEG temperature set point 60°C 65°C 70°C
ALEG timeout
70 min. 5 min. 3 min.
Anti-legionella function summary
TU = Temperature in the Upper section of the Cylinder, T2SET = Cylinder Temperature setpoint, dTAUX =
Temperature difference (from the temperature setpoint) for Auxiliary heating authorization, OFPI = OFPP
Internal, OFPE = OFPP External
USER
MODE
HEAT
SOURCE
PERIOD /
TIME
HEAT / TEMPERATURE
START CONDITION
STOP
CONDITION
COMMENTS
ANTI-
LEGIONELLA
MAX HYD/ELEC
OFPP start
time + 1h
If AL heating
required
Timeout (once
hot)
1h at night if no
OFPP
ECO ELEC
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