Vallox DIGIT SE Instructions For Use And Maintenance Manual

Contents

Vallox DIGIT SE Instructions For Use And Maintenance Manual Manual pdf 3 page image

1. THREE QUESTIONS ABOUT VENTILATION1.1. Why is air replaced in dwellings?Good ventilation promotes healthy living for both residents and the building. Air in a dwelling needs tobe replaced in order to remove humidity brought about by living as well as impuritiesemanating from structures and human bodies. Impurities of indoor air include carbondioxide, formaldehyde, radon and other gases as well as dust.Mechanical ventilation is needed in order to be able to adjust air circulation as needed bythe residents. In a tightly sealed house, air does not circulate sufficiently by natural means.Even in a poorly sealed house air is only replaced because of differences between indoorand outdoor air temperatures, or because of winds. This means that ventilation is dependenton weather conditions and cannot be regulated.It is especially important that humidity and carbon dioxide content of the indoor air stay at ahealthy level. Recommended humidity content of good indoor air is approximately 45%.Humidity content is lower in winter and higher in summer and autumn. Dust mites thrive inindoor air if humidity exceeds 50%, and if humidity stays at over 60% for a long time inwinter, water condenses in the cold structures of the house and mould starts to form.The recommended maximum carbon dioxide content in good indoor air is circa 1,000 ppm.1.2. What are the characteristics of adequate ventilation?• Indoor air stays fresh in all the rooms of the dwelling, also in bedrooms during night.Without adequate ventilation, carbon dioxide content tends to rise high especially inbedrooms.• The bathroom and the sauna get dry quickly.• During the heating season, the windows and other outer wall structures remain dry.• Humidity in indoor air is not condensed in the ventilation ducts.• Air is fresh in the toilet as well.1.3. How much air is replaced?For air to be clean to breathe, it has to be replaced with outdoor air every two hours.In a new and a renovated house, air needs to be circulated continually, at least once anhour, during the first year in order to remove harmful gases and structural humidity. Inbuildings that are more than a year old and dry, ventilation can be regulated as needed.Ventilation is boosted during for instance a sauna bath, clothes washing and cooking, andreduced during very cold periods or when there is nobody at home. Carbon dioxide andhumidity sensors adjust ventilation in the rooms automatically as needed.SEASONAL CALENDARNOTE!For further details, see inner pages.Autumn• Wash or change the coarse filter and cleanor change the fine filter if needed. Therecommendation is approximately once ayear.• Check that the heat recovery cell is clean.• Check that the condensing water outlet isnot clogged.• Switch the post-heating radiator on.Spring:• Wash or change the coarse filter and cleanor change the fine filter if needed.• Clean the fan blades and the post-heatingunit if needed.• Check that summer ventilation is inoperation.• Switch the post-heating radiator off.VALLOX DIGIT SE/SE VKLTHREE QUESTIONS ABOUT VENTILATION34 1 2 3 43 12 VALLOX DIGIT SE, order of duct outlets1. Supply air to rooms2. Extract air to the unit3. Outdoor air to the unit4. Exhaust air outsideR MODEL1. Supply air to rooms2. Extract air to the unit3. Outdoor air to the unit4. Exhaust air outsideL MODEL© VALLOX • We reserve the right to make changes without prior notification.