Opop H4 EKO-D Series User Instructions page 15

H4EKO-D
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valve 2 (shows the operating parameters of additional valve 2).
ATTENTION: In order for the valve parameters panels to be active, these valves must be installed and configured correctly by the
specialist.
4. Temperature settings
Here you can select the desired temperature of the boiler's outlet water 'CH temperature' and the required boiler temperature
'DHW temperature' if the DHW heating is activated in the 'Operating modes' menu.
4.1 Set CH temperature
This option allows you to set the set boiler temperature. The boiler temperature can be changed by the user from 45°C to 85°C. It
is also possible to change the set CH temperature directly in the controller's homepage by turning the impulse controller.
4.2 Set DHW temperature
This option allows you to set the temperature of the domestic hot water. The user can change this temperature from 30°C to 60°C.
5. Manual mode
For user convenience, the controller is equipped with Manual mode. In this function, each operating device (fan, CH pump, DHW
pump, additional pump – circulation or valve) is switched on and off independently of each other and each active mixing valve can
be closed, opened or stopped in the given position.
Pressing the impulse controller will start the function of the selected device. The device will be operated until pressing the impulse
button.
In addition, the user has the option to set any fan speed in the Fan output option in the manual mode.
6. Pump operating modes
In this function, one of the four boiler operating modes is activated according to the user's requirements.
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House heating – In this option, the controller enters the CH heating mode. The pump will start operating above the pump
switch-on temperature (factory set to 38°C). The pump stops running below this temperature (minus hysteresis 2°C).
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Boiler priority – In this mode, the boiler pump (DHW) is first turned on and operates until the set DHW temperature has
been reached. Once it is reached, the DHW pump is switched off and the CH pump is activated. The CH pump runs all the
time until the DHW temperature drops below the set temperature by the DHW hysteresis value. Then the CH pump
switches off and the DHW pump switches on (the pumps run alternately). In this mode, the fan and feeder operation is
limited by a maximal boiler temperature to 62°C to prevent the boiler from overheating.
ATTENTION: The boiler must have check valves installed on the circulation of the CH and DHW pumps. The valve on the
DHW pump prevents the hot water from being sucked out.
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Parallel pumps
In this mode, both pumps start operating simultaneously when the pump switch-on temperature is reached. This
temperature can be different for each pump, depending on the setting by the user. This means that one pump can be
switched on before the other, but when the two set temperature limits are exceeded, the pumps will run simultaneously.
The CH pump is operating continuously and the DHW pump switches off after the set DHW temperature has been
reached; on the contrary, it will be switched on when the temperature falls below the set temperature reduced by the
set DHW hysteresis value.
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Summer mode
In this option, the CH pump is switched off and the DHW pump switches on when the set switch-on temperature is
reached. It will operate continuously until the temperature drops to the switch-on temperature reduced by the DHW
hysteresis value or if this condition is met: (boiler temperature) + 2°C ≤ (DHW temperature).
In the summer mode, only the set boiler temperature is set, which is also the set DHW temperature.
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Instructions