25
•
Cooling down with DHW pump
- Option not available for schemes 5, 8, 11, 13, 15. This function is active beyond
the time period, which means all the time. Sensor 4 is required for it to operate correctly (it should be installed
in the external DHW tank). This function will not operate when the installation scheme which includes all sensors
is selected. Tank sensor is also necessary for it to operate (in the case of two sensors in the tank - the top sensor).
If the conditions listed above are met, the peripheral device will be activated (contact closing) when:
➔
the tank temperature during its growth exceeds its maximum temperature reduced by the
cooling activation
delta
and operates until the temperature drops below the tank maximum temperature reduced by the
cooling
deactivation delta
(both parameters are may be adjusted in the menu).
➔
the temperature in the tank is higher than the DHW temperature. A constant hysteresis of 3
o
C
is used here.
3.7.
ENERGY COUNTING
The following parameters need to be configured to achieve more accurate energy measurement.
•
Number of collectors
–
on the basis of the number of collectors the controller calculates how much heat has
been produced by the solar installation (energy gain).
•
Flow
- the user should specify the amount of glycol that flows through the pump during one minute.
•
Medium type
- the user chooses the agent used: ethylene glycol, propylene glycol or water.
•
Glycol solution
–
the user specifies glycol concentration in water (given in percent).
•
Calibration
- this function allows the user to calibrate the temperature difference between the sensors. The
temperature is measured in the place where the temperature sensor is installed. Deviations may occur in the
flow and temperature measurement at the tank return. The manufacturer does not recommend changing this
setting.
3.8.
OPTIONS
This submenu is displayed only for schemes 5, 10, 11.
•
Heating activation delta
- this option is available only in scheme 5. This configuration includes an additional
circulation heating the tank with the use of CH boiler. If the tank temperature is lower than the pre-set tank
temperature at least by the value of the pre-set activation delta (this is the difference between the pre-set tank
temperature and current tank temperature), the auxiliary pump (from the CH boiler) is activated to heat the
accumulation tank (provided that the CH boiler temperature is higher than the tank temperature). This setting
is active only at the hours defined by the user (f
rom/through
).
•
From hour…/through hour…
- Option available only for scheme 5. These settings define the hours
(f
rom/through
) when the circulation from the CH boiler heating the accumulation tank is active (see: the previous
point).
•
Energy return
- Option available only for scheme 5. Selecting scheme 5 enables energy return (e.g. to the central
heating system) above the pre-set tank threshold temperature.
•
Energy return threshold -
Option available only for schemes 5, 11. This parameter defines the threshold tank
temperature at which the valve switches to heating the CH boiler return or the pump is enabled.
