Rotex Controller Series Product Documentation page 6

EbV
8.5 Function Buffer Loading Pump (..VV..) ....................................................... 8-43
8.6 Solid Fuel Loading Pump (SFP) ................................................................. 8-51
8.7 Tank charge changeover ............................................................................ 8-53
8.8 Heat forced dissipation valve ..................................................................... 8-54
8.9 Hydraulic buffer release (HBR) (..VV..) ...................................................... 8-55
8.10 Heating Circuit Constant Temperature Control (..2.. or ..3..) ...................... 8-56
8.11 Fixed Value Control (..2.. or ..3..) ............................................................... 8-56
8.12 Demand contact ......................................................................................... 8-57
8.13 Global Malfunction Message Output .......................................................... 8-58
8.14 Global Malfunction Message Input ............................................................. 8-58
8.15 Timer .......................................................................................................... 8-58
8.16 External switching modem ......................................................................... 8-59
8.17 External information ................................................................................... 8-60
9 Data bus / Bus Communication / Room controllers .............................................. 9-1
9.1 The data bus system .................................................................................... 9-1
9.1.1 Data bus addresses ............................................................................... 9-1
9.1.2 Control functions via the bus ................................................................. 9-2
9.1.2.1 Boiler corrosion protection .............................................................. 9-2
9.1.2.2 Indirect return temperature control ................................................. 9-2
9.1.2.3 Accumulator mode (accumulator priority mode) ............................. 9-2
9.1.2.4 Heating demand ............................................................................. 9-2
9.1.2.5 Clock synchronisation ..................................................................... 9-2
9.1.2.6 Room temperature information ....................................................... 9-2
9.1.2.7 Errors/ status indications ................................................................ 9-2
9.2 Operation of wall devices ............................................................................. 9-3
9.2.1 Operation of wall devices RS ................................................................ 9-3
9.2.2 Operation with wall device RFF ............................................................. 9-4
9.2.3 Bus priority heating circuit ..................................................................... 9-6
9.3 Expanding the system by several standard units ......................................... 9-7
9.3.1 Examples with several controllers ......................................................... 9-7
9.4 Unrestricted use of Gateway GWK .............................................................. 9-8
10 Cascading of heat generators in the bus system ................................................ 10-1
10.1 General description of cascading of control devices .................................. 10-1
10.2 Functions of the cascade parameter .......................................................... 10-1
10.3 Mode of operation of cascade control ........................................................ 10-3
10.3.1 Switch-on characteristics ..................................................................... 10-3
10.3.2 Switch-off behavior .............................................................................. 10-4
10.3.3 Operation with boiler control (old) ........................................................ 10-4
10.3.4 Operation with conventional heat generators (2-point) ........................ 10-4
10.3.5 Operation with boiler control (new) ...................................................... 10-5
10.3.6 Operation with group reversal ............................................................. 10-7
10.3.7 Behavior during heat generator fault ................................................... 10-8
10.3.8 Behavior for special functions .............................................................. 10-8
11 Help for commissioning, maintenance and problem solving ............................... 11-1
11.1 Automatic Set-Function .............................................................................. 11-1
11.2 Check safety temperature limiter ................................................................ 11-2
11.3 Relay / Function Test ................................................................................. 11-3
11.4 Malfunction messages ................................................................................ 11-4
11.4.1 Error messages basic display / Error stack ......................................... 11-6
11.4.2 OEM-Information for troubleshooting .................................................. 11-7
11.4.2.1 Controller complete reset .............................................................. 11-7
11.4.2.2 Controller time correction .............................................................. 11-7
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