ecoTEC exclusive installation and maintenance instructions / 0020017768_02287.2.4 Setting the return temperature controlWhen connecting underfloor heating or wall heating tothe appliance which does not have its own temperatureregulation, the temperature regulation mode can bechanged from feed temperature regulation (factory set-ting) to return temperature regulation under diagnosispoint "d.17".7.2.5 Setting the burner anti-cycle timeTFeed(target)[°C]Set maximum burner anti-cycle time [min]1 5 10 15 20 25 30 35 40 45 50 55 6020 2,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 55,0 60,025 2,0 4,5 9,2 14,0 18,5 23,0 27,5 32,0 36,5 41,0 45,0 50,0 54,530 2,0 4,0 8,5 12,5 16,5 20,5 25,0 29,0 33,0 37,0 41,0 45,0 49,535 2,0 4,0 7,5 11,0 15,0 18,5 22,0 25,5 29,5 33,0 36,5 40,5 44,040 2,0 3,5 6,5 10,0 13,0 16,5 19,5 22,5 26,0 29,0 32,0 35,5 38,545 2,0 3,0 6,0 8,5 11,5 14,0 17,0 19,5 22,5 25,0 27,5 30,5 33,050 2,0 3,0 5,0 7,5 9,5 12,0 14,0 16,5 18,5 21,0 23,5 25,5 28,055 2,0 2,5 4,5 6,0 8,0 10,0 11,5 13,5 15,0 17,0 19,0 20,5 22,560 2,0 2,0 3,5 5,0 6,0 7,5 9,0 10,5 11,5 13,0 14,5 15,5 17,065 2,0 1,5 2,5 3,5 4,5 5,5 6,5 7,0 8,0 9,0 10,0 11,0 11,570 2,0 1,5 2,0 2,5 2,5 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,575 2,0 1,0 1,0 1,0 1,0 1,0 1,0 1,0 1,0 1,0 1,0 1,0 1,0Table 7.2 Effective burner anti-cycle timeThe burner is electronically locked for a specific timeafter each time it is switched off ("re-start interlock")to avoid frequent switching on and off of the burner(energy losses).The burner anti-cycle time is only activated for theheating operation. Hot water operation during a burneranti-cycle time does not affect the timer.The individual anti-cycle time can be matched to thehydraulic and thermal properties of the heating installa-tion. In the factory the burner anti-cycle time is set toa value of 20 minutes. It can be varied under diagnosispoint "d.02" within the range 2 minutes to 60 minutes.The individual effective anti-cycle time is calculatedfrom the momentary target feed temperature and theset maximum burner anti-cycle time.The timer can be reset or cancelled by actuating theappliance main switch. The remaining burner anti-cycletime left after switching off by the controller in heatingoperation can be called up under diagnosis point "d.67".The individually effective burner anti-cycle times withrespect to the feed temperature and the maximum setburner anti-cycle time can be taken from Table 7.2.7.2.6 Determination of the maintenance interval/maintenance displayThe electronics of the ecoTEC exclusive allow you todetermine the maintenance intervals for the appliance.This function serves to provide a signal that, after aspecific, adjustable, number of burner operating hours,the boiler needs to be serviced. The service signal SEr isshown in the display of the ecoTEC exclusive alternatelywith the current pressure after expiry of the set numberof burner operating hours. The display also appears onthe VRT 360 and 400 (accessories).Heat demand Number ofpersonsBurner operating hours to the nextinspection/service (dependentupon the type of appliance)32 kW 3 - 44 - 62.800 h2.900 h38 kW 4 - 64 - 83.000 h3.100 hTable 7.3 Guide values for operating hoursThe operating hours to the next service can be set underdiagnosis point "d.84". Guide values can be taken fromTable 7.3; these values correspond to an approximateoperating time for the appliance of one year.The operating hours can be set in steps of ten from0 to 3000 h.If there is no number in the diagnosis point "d.84", butthere is the symbol "-", then the "maintenance display"is not active.8 Inspection and maintenance