Tech
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15
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IV.e.3)
Type of medium
The user chooses the agent used: ethylene glycol, propylene glycol or water.
IV.e.4)
Glycol solution
The user specifies glycol concentration in water (given in percent.
IV.e.5)
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.
IV.f)
Alarm sound
This function enables the user to activate/deactivate the sound signal after an alarm occurs.
IV.g)
Factory settings
The controller is pre-configured for operation. However, the settings should be customized to the user's
needs. Return to factory settings is possible at any time. Once the factory settings option is activated,
all customized settings of the solar installation controller (saved in the user's menu) are lost and
replaced with the manufacturer's settings. Then, the parameters may be customized anew. Return to
factory settings results in activating the default installation scheme.
IV.h)
Edit service code
It is possible to edit service menu code. Go to this submenu, enter the code and confirm the settings.
V. Protections
In order to ensure safe and failure-free operation, the controller is equipped with a range of
protections.
1. Sensor protection.
If one of the sensors is damaged, an acoustic signal is activated and the following symbol
will
appear on the right hand side of the display. An additional icon informing the user which sensor is
disconnected or damaged will flash in the place of its temperature. In order to deactivate the alarm
signal in case of error, press
EXIT
button.
2. Protection against collector overheating.
If the maximum (alarm) temperature is reached, the regulator switches to the so-called
collector
overheat mode
and the display shows a corresponding symbol
. The pump is enabled in order
to cool down the collector until the
maximum tank temperature
is reached or until the collector
temperature drops by the value of the
alarm hysteresis
(see:
SERVICE MENU > Solar Collector> Alarm
Hysteresis
) In the case of two tanks, both of them are used to cool down the overheated collector (at
the same time or one by one, depending on the operation algorithm setting).
3. Heat tank protection.
In the event of collector overheating, each tank may be heated to no more than the pre-set maximum
safe temperature. After reaching this temperature, the pump of a given tank is disabled (in system
configuration with two tanks and a valve, the circulation is switched to the second tank).
4. Fuse.
The regulator is equipped with a WT 3.15A tube fuse-link protecting the network.
