Vaillant geoTHERM VWS Installation Instructions Manual

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Vaillant geoTHERM VWS Installation Instructions Manual Manual pdf 46 page image

Installation instructions geoTHERM VWS 0020046310_0146Freezing protection functionThe outlet temperature of the heat source is constantlymeasured. If the heat source outlet temperature fallsbelow a defined value, the compressor switches off tem-porarily with error message 20 or 21 (see Chap. 10.4). Ifthese errors appear three times in succession, a fault-in-duced shutdown takes place (see Chap. 10.5).For the geoTHERM VWS heat pumps you can set thevalue (Default setting -10 °C) for the freezing protectionin the installation assistant A4.8.3 Settable auxiliary functionsYou can set the following auxiliary functions from thecontroller yourself and thus adapt the system to localcircumstances or the operator's wishes.h Note:Operation of the controller is sub-dividedinto three levels:- Operator level -> for the operator- Code level -> for the expert technician- vrDIALOG -> for the expert technician8.3.1 Auxiliary functions in the Operator Level:Time programmeYou can set the heating times for each heating circuit.You can store up to three heating periods per day orper block (Block = Mon - Fri or Mon - Sun or Sat - Sun).See Table 8.3, Menu 3 "Timer programs".Holiday programmingYou can programme two holiday periods with dateentry. You can additionally define the set-back tempera-ture to which the system should be regulated during theperiod of absence.See Table 8.3, Menu 4 "Holiday programming".Party functionThe party function permits you to extend the currentheating and hot water periods beyond the next switch-off time, to the start of the next heating period.See Chap. 8.9.Energy-saving functionThis function allows you to set back the heating for anadjustable period of time.See Chap. 8.9.8.3.2 Auxiliary functions in the Code Level:Floor dryingYou can dry out a freshly laid screed floor using thisfunction in accordance with Table 8.1. The flow tempera-ture corresponds to a routine stored in the controllerand is independent of the outside temperature. All theselected operating modes are interrupted when thisfunction is activated. See Table 8.4, Menu C6.Day afterstarting thefunctionTarget flow temperature for this dayStartingtemperature12345 – 121314151617 – 2324252627282925 °C25 °C30°C35 °C40°C45 °C40°C35 °C30°C25 °C10°C(frost protection function,pump in operation)30°C35 °C40°C45 °C35 °C25 °CTable 8.1 Progress of the screed floor dryingThe operating mode is displayed together with the cur-rent day and the target flow temperature. The currentday can be set manually.If the brine circuit is not yet finished, the drying of thescreed floor can be accomplished by means of the auxi-liary heating. In order that the drying of the screed floorcan take place by means of the auxiliary heating, selectthe value "ZH only" for the "Heating mode" parameterin Menu C7, "Auxiliary heating".a Caution!Overloading of the heat source!If too much energy is extracted from theheat source while drying out a floor (e.g.in the winter months), the source can beoverloaded and itsregeneration impaired.When the function is started, the current time of thestart is saved. The day is changed exactly at this time.After network-off/-on, the floor-drying begins as follows:8 Control system