Vaillant geoTHERM SERIES Installation And Servicing

Also see for geoTHERM SERIES: System Installation Instructions Instructions for use Installation instructions Operating instructions

Installer_manual_OEM_Vaillant_PROTO_3_GB - 06/11 - Vaillant- 43 -Code function Description Setting factorysettingModifiableparameterMin Max146Configuration forstopping the heatpump if control by S1contact input1 = Immediate halt (as soon as contact S1 moves into the open position, the heatpump stops).2 = Gradual halt (as soon as contact S1 opens, the speed of the compressorgradually reduces. This configuration is used to delay the shutdown of thecompressor after contact S1 switches to the open position and to limit the numberof compressor cycles per hour to 3.1 2 2 Yes147Configuration ofthe output betweenterminal channels 5and N1 = Unit alarm2 = Ambient temperature setting reached 1 2 1 Yes148 Limit exteriortemperature (T0)This parameter defines the exterior temperature that is the functioning limit and wherethe heat pump stops. In this configuration, only the booster heating functions. See thechapter "Configuring the booster heating".-20°C 65°C -20°C Yes149Choice of display inthe command unit'stemperature zone1 = Ambient temperature2 = Temperature of water leaving the installation3 = Temperature of water returning to the installation5 = Compressor suction temperature6 = Compressor discharge temperature7 = Exterior temperature1 7 1 Yes150 Exterior temperaturebivalence point (T1)This temperature defines the external temperature from which the power of theheat pump alone is not sufficient to meet the needs of the installation. Below thistemperature, the booster heating and the heat pump can function together. Seethe chapter "Configuring the booster heating".30°C -20°C 0°C Yes151 Delays for switchingon booster heatingThis parameter defines the period from which the booster heating is switched onwhen: T0 < exterior T° < T1. 1 60 20minutes Yes152 Differential stop/start booster heatingThis parameter defines the differential between the installation's watertemperature setting and the water temperature from which the booster heatingswitches on when: T0 < exterior T° < T1.1°C 20°C 5°C Yes153Mode of activationhot-water demandcontact S51 = Always active (demand for hot water is always met)2 = Activated only in heating modes (demand for hot water is met only in heatingmode)1 2 1 Yes154 Booster heatingfunctioningThis parameter defines the functioning of the booster heating when: exterior T° < T0.0 = Continuous functioning1 = ON/OFF functioning depends on the ambient temperature.In case of a thermostat fault, switch to mode 3.2 = ON/OFF functioning depends on the installation's water temperature.1 2 1 Yes155 Functioning of maincirculatorThis parameter defines the functioning mode for the main circulator for an externaltemperature < T0 (code 148)0 = Stopped1 = ON/OFF cycle identical to the booster heating2 = Continuous operation0 2 1 Yes156Configuration ofthe output betweenterminals 12 and NConfiguration of the output (connection between terminal channels 12 and N)0 = Not used1 = ON/OFF cycle identical to the main pump The water pump works continuouslyin case of demand for hot water.2 = ON/OFF cycle identical to the main pump The pump is halted in case of demandfor hot water.0 2 2 Yes157 Functioning of theadditional circulatorThis parameter defines the functioning mode for the additional circulator for anexternal temperature < T0 (code 148)0 = Stopped1 = ON/OFF cycle identical to the booster heating2 = Continuous operation0 2 1 Yes158Differential on thetemperature settingfrom the ambient airThis parameter defines the differential on the ambient temperature setting in thecase where the parameter 100 is configured to 4 (regulation with the commandunit used as the room thermostat).+/-0.2°C+/-1°C +/- 0.3°C NoINSTALLATION