EUROSTER 813 – USER MANUAL 1
EUROSTER 813
INTRODUCTION
The Euroster 813 is a din-rail mount Solar controller for a domestic water heating system.
It is designed to be used as differential temperature controller to control a solar collector
and maximum 2 storage tanks subject to the chosen operating mode.
The controller is able to control an auxiliary heating (boiler or electric) elements to provide
supplementary heat. Users can program the required time schedule to automatically start-stop
the auxiliary heating.
The unit provides 4 operating modes for users to choose from. A preventive measure is build-
in to prevent error from occurrence whilst in selecting the required operating mode. Graphic
of each required mode that will be shown on the LCD of the unit,as below.
Graphic descriptions to operation logic in each of 4 operating modes:
Normally Closed (before setpoint/limitation)
Normally Opened (before setpoint/limitation)
Mode-1: 2 sensor operation with 1 storage tank
S1 - Solar collector temperature sensor
S2 - Lower storage tank temperature sensor
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