Kostrzewa Platinum Bio ecoMAX860P3-O TOUCH Manuel D'instruction page 85

15. Service settings
Boiler temperature increase
by DHW and mixing valve
Extend DHW time
Circulation pump idle time
Circulation pump operation time
Circulation pump start temp
Heat exchanger
15.4 Buffer tank
Buffer tank control
Charging start temperature
Charging end temperature
Heating system start
15.5 Mixing valve
Mixing valve control
Disabled
CH enabled
Floor heating enabled
Pump only
Heating and ventilation
This parameter determines by how many degrees the boiler temperature setpoint will be increased to charge
DHW storage tank, buffer tank and mixing valve circuit. The temperature is increased as required. If the boiler
temperature setpoint is high enough, the controller will not change it due to the need to charge the DHW storage
tank, buffer tank or mixing valve circuit.
Available with DHW sensor installed. The boiler may overheat after charging DHW storage tank with DHW pump
disabled. It takes place, when DHW temperature setpoint is higher than the boiler temperature setpoint. This
applies to DHW pump operation in SUMMER mode, when CH pump is disabled. DHW pump operation time may be
extended with Extend DHW time parameter to cool the boiler.
Idle time between circulation pump operation cycles is defined by Circulation pump idle
time parameter value (recommended setting 15-40 minutes). Circulation pump operates in
cycles for the circulation time duration (recommended setting is 60 to 120 seconds).
Domestic hot water temperature at which the circulation pump is activated to force the circulation.
It applies to hydraulic systems with heat exchanger between the open system and the closed system.
Available options:
• YES - boiler pump operates in continuous mode in short boiler - heat exchanger circuit
and is not disabled, e.g. by SUMMER mode or DHW priority mode,
• NO - boiler pump works normally.
Buffer tank setting
Activates operation mode with buffer tank.
Charging start temperature defines upper buffer tank temperature, below which the buffer
tank charging starts. Buffer tank charging stops when the lower buffer tank temperature
reaches the value of Charging end temperature.
If the top buffer temperature decreases below this value, the mixing valve pumps and DHW
pump are disabled to save power. This function can be used in GRATE mode.
Mixing valve 1-5 setting
Activates operation mode with buffer tank.
Mixing valve actuator and mixing valve pump are disabled.
Used when the mixing valve circuit supplies central heating radiators. Maximum mixing valve circuit tempera-
ture is not limited, the mixing valve is fully open when alarm is activated, e.g. boiler overheating. Note: do not
disable, if the system is made of pipes with low temperature resistance. It is recommended to set the mixing valve
operation to FLOOR HEATING enabled.
Used when the mixing valve circuit supplies the floor heating system. Maximum mixing valve circuit temperature
is limited to Max. mixing valve temp. setpoint. Note: if FLOOR HEATING is set to ON, set Max. mixing valve temp.
setpoint to avoid floor damage and risk of scalding.
When the mixing valve circuit temperature exceeds the temperature set as the mixing valve temperature setpoint,
the mixing valve pump is disconnected from its power supply. After the circuit temperature is reduced by 2°C, the
pump is activated again. It allows to control the floor heating pump with a thermostatic valve without actuator.
Platinum Bio ecoMAX 860P User Manual – EN 07.22
85