Vaillant AROTHERM VWL ../2 A series Operating Instructions Manual

Contents

1 Safety6 Operating instructions aroTHERM 0020151761_04Frost protection and monitoringdevices are only active whilethe product is connected tothe power supply. The productmust be connected to the powersupply.1.2.12 Frost damage causedby insufficient roomtemperatureIf the room temperature is settoo low in individual rooms, itcannot be ruled out that sec-tions of the heating installationmight be damaged by frost.▶ If you are going to be awayduring a cold period, ensurethat the heating installationremains in operation and thatthe rooms are sufficientlyheated.▶ You must observe the frostprotection instructions.1.2.13 Frost damage causedby a power cutDuring installation, your com-petent person connected yourproduct to the power mains.If the power supply is cut, it ispossible that parts of the heat-ing installation may becomedamaged by frost. If you wantto use an emergency powergenerator to maintain the oper-ational readiness of the productduring a power cut, note the fol-lowing:▶ Contact your competent per-son for advice on installing anemergency power generator.▶ Ensure that the technical val-ues of this generator (fre-quency, voltage, earthing)match those of the powermains.1.2.14 Malfunction causedby incorrect systempressureTo avoid operating the systemwith too little water and thusprevent resulting damage, notethe following:▶ Check the system pressureof the heating installation atregular intervals.▶ You must observe the systempressure instructions.1.2.15 Malfunction due toincorrect power supplyThe power supply must remainwithin the specified limits so thatthe product does not malfunc-tion:– 1 phase: 230 V (+10/-15%)~50 Hz– 3 phases: 400 V (+10/-15%) 3N ~50 Hz