M-thermal technical manual – part 3
heating “1” or not “0”.
“0-1” Fan coil: defines whether the system installations with fan coil “1” or not “0”.
“0-2” Sanitary hot water tank: Defines whether the system installations with sanitary hot water
tank “1” or not “0”.
“0-3” Electric heater for sanitary hot water tank: Defines whether an electric heater was
assembled in the sanitary hot water tank “1” or not “0”.
“0-4” Auxiliary heating source: Defines whether there is a boiler as an auxiliary heating source
for the system “1” or not “0”.
“0-5” Solar kit: Defines whether there is a solar kit to heating the sanitary hot water tank “1” or
not “0”.
“0-6” auxiliary heater: Defines whether there are electric heaters assembled in the indoor unit
“1” or not “0”.
“0-7” Room thermostat: Defines whether there is a room thermostat connected with the indoor
unit “1” or not “0”.
“0-8” Fan coil function: Function of the fan coil,"0"for cooling only,"1" for heating and cooling.
b) Priority
This part defines the priority of space heating, space cooling and sanitary hot water tank heating.
“1-0” Space heating and sanitary heating priority: Defines the priority of space heating and
sanitary heating, “0” for sanitary heating priority, “1” for space heating priority, and “2” means
space heating and sanitary heating have the same priority.
“1-1” Space cooling and sanitary heating priority: defines the priority of space cooling and sanitary
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
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