TECH ST-81 - Page 15

Contents
I. Description...........................................................................................................................4
II. Controller functionalities...............................................................................................5
II. a) Main screen.............................................................................................................5
II. b) Firing-up...................................................................................................................5
II. c) Manual operation..................................................................................................6
II. d) The temperature of activation of CH and UHW pumps ......................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
III. b) Auomatic sensor control...................................................................................12
III. c) Temperature protection....................................................................................13
III. d) Boiling protection................................................................................................13
III. e) Fuse...........................................................................................................................13
IV. Maintenance...................................................................................................................14
V. Technical support..........................................................................................................15
VI. Installation......................................................................................................................16
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