10Installation ManualDo Not Use Equipment for Purposes Other Than Those Specified• Do not use for other than increasing the temperature of the water supply, as unexpected accidentsmay occur as a result.Check Water Supply Quality• If the water supply is hard, acidic or otherwise impure, treat the water with approved methods inorder to ensure full warranty coverage.See water quality statement on page 28.Frost Protection• When installed, power to the unit must be kept switched on, otherwise the appliance should bedrained.This prevents water freezing, and causing damage to the water heater.WARNINGCAUTIONFor NG GasBefore Installationxxxxxxxxxxxxxx xxxxCheck the Gas• Check that the data label (Side of casing).• Check that the gas supply line is sized for32ECR6N, 32ECR6L: 217 MJ/hr, 217 MJ/hr28ENR6N, 28ENR6L: 220 MJ/hr, 220 MJ/hr• DO NOT OPERATE WITH ANY OTHER GAS TYPE.Check the Power• The power supply required is 230 - 240VAC, at 50Hz.Using the incorrect voltage may result in fi re orelectric shock.Warning labels• Located on the side of the casing -PLEASE READ THESE LABELS CAREFULLY!