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FUnCTIon SETTInG InDooR UnIT WITHoUT InTEGRA TED WA TER T AnK
INDOOR UNIT WITHOUT INTEGRATED WATER TANK
A
System water temperature setpoint
A
ISP
ISP-OTS
p. 18
"ISP"
: setpoint WINTER (Heating)
p. 21
"oTS"
: differential for climate control
p. 20
: minimum outside temperature for climate control
"oTL"
p. 20
"oTH"
: maximum outside temperature for climate control
p. 17
"PT8"
: outside air
Check carefully how the parameter setting affects the plant water flow temperature. An excessively low temperature will
not allow sufficient heating of the air treated by the hydronic terminals.
4�6 Anti-Legionella
The anti-legionella function must be activated if domestic hot water is stored in a boiler.
The function is not necessary if domestic hot water is produced by the plant water using a rapid exchanger.
The anti-legionella function is only possible with the electric heater kit.
By activating the Antilegionella function, the regulator can conduct the thermal disinfection procedures autonomously on hot
water systems equipped with recirculation, consider-ably reducing the risk of the presence and proliferation of the bacteria
causing Legionella.
The variables in the systems in which our products may be installed do not allow the total exclusion of the risk.
Activation of the disinfection function can be performed by connecting a timer to the inlet that has a default value set for 2
a.m. the night between Sunday and Monday; as statistically this is a time with a low probability of employment on behalf of
the users.
The length of the action depends by the features of the installation.
Legionella bacteria react differently de-pending upon the maximum temperature reached within the circuit and, with the
increase of temperature, the dura-tion time decreases.
4�6�1 Function enabling
The anti-legionella function must be enabled by parameter "LTI"
4�6�2 Settings
p. 19
"LSP"
: anti-legionella temperature setting
p. 19
"LTM"
: anti-legionella cycle duration
p. 19
"LTI"
: anti-legionella cycle frequency
p. 19
"LTo"
: Anti-legionella cycle timeout
The default parameters set in the device are:
• temperature setting LSP > 60°C for a duration LTM of 2 hours.
34
OTL
B
outdoor air temperature
OTH
p. 19
B
PT8
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