Vaillant VRC 430 Operating And Installation Manual

Also see for VRC 430 Operating and: OPERATING AND INSTALLATION Manual

Contents

Vaillant VRC 430 Operating And Installation Manual Manual pdf 17 page image

17Operating Manual VRC 430 0020042468_02The comment field contains the text "Select targetroom temperature".⇒ Press the right-hand dial.The input field is highlighted.⇒ Turn the right-hand dial until the desired value isdisplayed (values from 5 °C to 30 °C inincrements of 0.5 °C and frost protection functionare possible).⇒ Press the right-hand dial.The desired target room temperature or the frost func-tion are set. The display jumps highlighted to normal.4.7.3 Entering parameters for the heating circuitYou can enter the following parameters:Set-back temperatureOutside the specified time windows, the heating is re-duced to the set-back temperature.If your expert technician has set the frost protectionfunction, the set-back temperature will automaticallybe 5 °C. There is no display of set-back temperature.Heating curveThe relationship between the outside temperature andthe required heating feed temperature is representedin a diagram having various different heating curves(see Fig. 4.15). Each heating curve (from 0.2 - 4.0)gives a value for the heating flow temperature (verti-cal diagram axis) for the individual outside tempera-ture (horizontal diagram axis).Fig. 4.15 Diagram with heating curves for a target room tem-perature of 20 °CExample:If you select a heating curve of 1.5 with a target roomtemperature of 20 °C, the controller provides a heatingflow temperature of 56 °C at an outside temperature of0 °C.The various heating curves indicate whether the heatingflow temperature should be higher or lower dependingon the outside temperature.h Note!In a well-insulated apartment a comfortableroom temperature can be achieved even with aflat heating curve. This saves heating energy.Your expert heating technician will provide ad-vice as to which heating curve should be se-lected.Proceed as follows to enter the parameters (exampleheating circuit 1):⇒ Turn the left-hand dial until screen 8 "HC1 param-eters" is displayed.> Select temperatureHC1 8Set back temperatureParameterHeating curve15 . 0 ° C1 . 2Fig. 4.16 Display screen 8 (example)⇒ Turn the right-hand dial until the cursoris in frontof the input field for the set-back temperature.The comment field contains the text "Set temperature".⇒ Press the right-hand dial.The input field is highlighted.⇒ Turn the right-hand dial until the desired value isdisplayed (values from 5 °C to 30 °C inincrements of 0.5 °C are possible).⇒ Press the right-hand dial.The desired set-back temperature is set. The displayjumps highlighted to normal.⇒ Turn the right-hand dial until the cursoris in frontof the heating curve value.The display field shows the text "set heating curve" inthe comment field.⇒ Press the right-hand dial.Operation 417