M-thermal technical manual – part 3
heating, “0” for sanitary heating priority, “1” for space cooling priority.
“1-2” Heat pump maximum running period for sanitary water tank heating: Specifies the
maximum time period during which sanitary water tank heating can be activated, even when the
target sanitary hot water temperature has not yet been reached..
“1-3” Solar heating priority: defines the priority sanitary hot water tank heating by solar kit “1” or by
heat pump & electric heater “0”.
■ Disinfection function
Apply only to installations with a sanitary hot water tank.
The disinfection function disinfects the sanitary hot water tank by periodically heating the sanitary
water to a specific temperature.
The disinfection function field settings must be configured by the installer according to national
and local regulations.
“2-0” Operation interval: Day of a week, the sanitary water should be heated.
“2-1” Status: Defines whether the disinfection function is turned on (1) or off (0).
“2-2” Start time: Defines the time of the day at which the sanitary water should be heated.
“2-3” Set point: Defines the hot water temperature to be reached when disinfection function.
“2-4” Interval: Time period defining how long the set point temperature should be maintained.
■ Auxiliary heating source operation
“3-0” Temperature difference: Defines the temperature difference between the set temperature
and the outlet temperature of indoor unit, above which the auxiliary heating source such as boiler
may be turned on.
“3-1” Interval: Defines the time period after which the auxiliary heating source such as boiler
may be turned on.
“3-2” Outdoor temperature: Defines the outdoor temperature below which the auxiliary heating
source such as boiler operation may be allowed.
“3-3” Floor heating inlet temperature: Defines the temperature below which the under floor
heating may be allowed.
■ Electric heater & HP priority
Apply only to installations with a sanitary hot water tank.
“4-0” Electric heater delay time: Defines the time period behind which the electric heater of the
sanitary hot water tank will be turned on.
“4-1” Heat pump start temperature difference: Defines the temperature difference between set
temperature and water tank temperature, below which heat pump turning on will be allowed.
“4-2” Set point correction for sanitary hot water tank temperature: The temperature difference
above the set temperature when the electric heater to be powered on.
■ Auxiliary heater operation
“5-0” Auxiliary heater delay time: Defines the time period behind which the auxiliary heater of
the indoor unit will be turned on.
“5-1” Auxiliary heater turn on temperature difference 1: Defines the temperature difference
between set temperature and water outlet temperature of indoor unit, below which one of the
auxiliary heaters will be turned on.
“5-2” Auxiliary heater turn on temperature difference 2: Defines the temperature difference
between set temperature and water tank temperature, below which both of the auxiliary heaters
will be turned on.
“5-3” Auxiliary heater turn on outdoor temperature: Specifies the outdoor temperature below
which the auxiliary heater may turn on.
■ Cooling and heating set point range
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