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H4EKO-D
Example:
The set temperature is 55 °C and the hysteresis is 5 °C.
After reaching the set temperature of 55 °C, the DHW pump switches off and the CH pump is switched on.
When the temperature drops to 50 °C, the DHW pump switches on again.
11. Additional pump - The user has the option of connecting an auxiliary pump: circulator or valve pump. Depending on the pump
selection, the settings need to be configured correctly.
The user here sets the daily cycle and pump breaks for 30 minutes. To facilitate setting of these parameters, there is a
possibility to copy the selected time interval to other days. Once the operating plan has been established, it is necessary to
set the working time and pump shutdown time during the activity in the previously selected time interval. If necessary, it is
also possible to quickly erase the current settings, thus making it easier to set new time intervals.
12. Encoder sensitivity - With this setting, we can determine the sensitivity of the pulse converter button, (where 1 means the
highest sensitivity).
13. External sensor calibration - Correction of the outdoor sensor is performed during installation or after a longer operating
time of the controller if the displayed temperature differs from the actual temperature. Control range: -10 to +10 ° C.
14. Boiler (DHW) desinfection - Thermal disinfection involves raising the temperature to the required disinfection temperature,
ie at least 60 °C throughout the DHW circulation. The purpose of DHW disinfection is the destruction of Legionella
pneumophila, which causes a weakening of the immunity of the organism.
After switching on this function (only in boiler priority mode), the boiler will heat until the disinfection temperature specified
by the user has been reached. The disinfection time parameter specifies the duration of the disinfection (eg: 10 minutes).
After that, the boiler returns to normal working mode. Once the disinfection is switched on, the disinfection temperature
must be reached until the disinfection time is reached. Otherwise, the function is automatically deactivated.
15. Factory settings – Reset of installation menu settings to factory settings.
16. PID sustain – if the set temperature is reached, the boiler goes into the so-called sustain mode. In this mode, the fan is
deactivated in order to prevent power increase. Caution: The boiler must be installed with a buffer tank so as not to overheat
the water in the heating system and the boiler.
17. Display contrast – change the font saturation on the display of the boiler control unit.
14. BASIC SETUP OF THE CONTROL UNIT
When commissioning the boiler, it is necessary to select the correct boiler output. The power is set by the technician who is
installing the boiler in the control Unit's Service Menu. Ensure that the boiler output is set correctly so that the fan speed matches
your boiler output.
The maximum boiler temperature can be set by pressing the navigation key and selecting the "CH temperature". This temperature
will be maintained by the boiler and the ventilator will be deactivated after the CH temperature is reached.
Boiler performance affects external factors such as chimney draft, primary and secondary flaps, fan speed, fuel type,
correct or incorrect power output calculated by the designer. Therefore, it is possible to exceed the set temperature of
the CH. For this reason, it is necessary to install it with a buffer tank.
The maximum DHW temperature, if DHW heating is activated, can be set by pressing the navigation key in the item "DHW
temperature". You activate the DHW heating in the "Pump operating modes" setting. If you activate DHW heating, make sure that
the DHW sensor is connected in advance, otherwise an alarm message will occur.
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User manual
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