TECH ST-28 User Manual Download Page 3

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WARNING!

Electric device!

Before you take any steps aiming at

powering the device (connecting wires,

installation of the device etc.), make sure

the controller is not connected to the mains.

The installation should be conducted by a

certified electrician.

Prior to commissioning of the controller, the

measurements of the grounding efficiency

of the electric motors and a boiler as well as

insulation measurements must be taken.

Summary of Contents for ST-28

Page 1: ...1...

Page 2: ...4 of 12 March 2003 introducing the provisions of the Low Voltage Directive LVD 2006 95 ECE and the Ordinance of the Minister of Infrastructure Dz U 03 90 848 of 02 April 2003 introducing the provision...

Page 3: ...of the device etc make sure the controller is not connected to the mains The installation should be conducted by a certified electrician Prior to commissioning of the controller the measurements of th...

Page 4: ...e flue gas outlet temperature the right of the screen shows the power of the fan Press EXIT to return to the main menu ST 81thermal controller is designed for central heating boilers ST 81 thermoregul...

Page 5: ...set up to meet individual requirements depending on the type of fuel and a boiler TECH shall bear no responsibility for the erroneous setup of the controller II Controller functionalities This section...

Page 6: ...e status is indicated by an asterisk in the right bottom corner of the display asterisk indicates that the fan is enabled The function allows safe operation of the boiler The furnace door must not be...

Page 7: ...The option enables setup of CH pump and UHW pump activation temperatures this refers to temperatures measured on the boiler Both pumps do not work below the set temperature If the set temperature is...

Page 8: ...activated at 60 C whereas the operation mode will be restored upon drop to 58 C The hysteresis value may range from 2 C to 6 C II f Hysteresis of UHW This option allows setup of the set temperature h...

Page 9: ...pon reaching the set temperature the UHW pump is deactivated and the CH pump starts In this mode the operation of the fan is limited to 62 C at the boiler to prevent boiler overheating This condition...

Page 10: ...activation of this function the LCD displays three items Boiler temperature CH vessel temperature UHW and set temperature II j Fixed CH Pump In this mode pumps are activated concurrently above the set...

Page 11: ...measures The alarm status is indicated by a sound and a special message is displayed on the LCD To restore operation of the boiler press the OPTIONS button III a Thermal protection This is an auxilia...

Page 12: ...the boiler set temperature is e g 55 C and the current boiler temperature is 62 C the controller activates the fan When the temperature reaches as much as 80 C the CH pump is activated If the tempera...

Page 13: ...be removed Furthermore the measurements of the grounding efficiency of the electric motors of CH pump UHW pump and fan must be taken No Item Unit 1 Power supply V 230V 50Hz 10 2 Power input W 2 3 Env...

Page 14: ...he plug is not connected to the means WARNING Incorrect installation of the wires may result in a damage to the controller The controller cannot operate in a closed central heating circulation system...

Page 15: ...umps 6 II e Hysteresis of the boiler 7 II f Hysteresis of UHW 8 II g UHV pump 8 II i Summer mode 10 II j Fixed CH Pump 11 II k Default settings 11 III Safety measures 12 III a Thermal protection 12 II...

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