4
II.
USE
EU-402N temperature regulator is intended for controlling solar collector systems in various configurations. The device
controls the collector pumps (or both the pump and the valve) on the basis of solar batteries temperature and the
accumulation tank temperature (two tanks). Optionally, it is possible to connect an additional device: circulating pump,
electric heater or to send a signal to CH boiler in order to initialise the fire-up process. Controlling the circulating pump
and sending a fire-up signal to the CH boiler may be done directly from the controller. An additional signal relay is
necessary in order to control the heater. The controller offers PWM pump control option enabling the user to adjust its
rotational speed.
III.
PRINCIPLE OF OPERATION
Description of example control panel:
Use buttons to navigate through the menu. Press MENU to enter the menu or confirm the settings. Use PLUS and MINUS
buttons to switch between menu options. Press MENU to confirm your choice. In order to return to the main screen view
(or higher level menu), press EXIT button. Follow the procedure to adjust the settings.
Operation mode
MENU
Plus button
Minus button
EXIT
Heat tank
temperature
Collector temperature
Collector pump
Clock
Selected scheme
