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Related Manuals for Tech Controllers EU-24 SIGMA
Summary of Contents for Tech Controllers EU-24 SIGMA
- Page 1 EU-24 SIGMA...
- Page 2 EU DECLARATION OF CONFORMITY Hereby, we declare under our sole responsibility that EU-24 SIGMA manufactured by TECH STEROWNIKI, head-quartered in Wieprz Biała Droga 31, 34-122 Wieprz, is compliant with Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits (EU OJ L 96, of 29.03.2014, p.
- Page 3 Safety Before using the device for the first time the user should read the following regulations carefully. Not obeying the rules included in this manual may lead to personal injuries or controller damage. The user’s manual should be stored in a safe place for further reference. In order to avoid accidents and errors it should be ensured that every person using the device has familiarized themselves with the principle of operation as well as security functions of the controller.
- Page 4 Principle of operation Microprocessor-based ST-24 Sigma regulator is intended for controlling CH boilers equipped with blow and CH pump. Its main task is to maintain the pre-set temperature with the use of a fan. In order to fire up the boiler (when the boiler temperature is below 30°C), press EXIT button –...
- Page 5 in sustain mode. Blow-by pause function is activated by pressing OPTIONS button until “przerwa przedmuchu” LED goes on. Here, the user should set the blow-by pause time (in minutes) in sustain mode. The sustain mode (when the CH temperature remains above the preset value) prevents the boiler fire going out and limits further temperature rise.
- Page 6 Moreover, the controller is equipped with a bimetallic mini-sensor (thermal overload relay), which automatically disconnects the fan from the power supply when the temperature of about 85°C is reached (CH pump works all the time) It prevents the water in the installation form boiling in the case of boiler overheating or controller damage. After this protection has been activated and the temperature has dropped to a safe level, the sensor will automatically unlock itself and the alarm will be turned off.
- Page 7 Maintenance Before and during the heating season, the ST-24 sigma controller should be checked for condition of its cables. You should also check if the controller is properly mounted and clean it if dusty or dirty. It is advisable to measure earthing parameters for the motors (pump and fan) Controller wiring diagram PE - EARTHING (YELLOW -...
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