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© VALLOX • We reserve the right to make changes without prior notification.

VALLOX TSK

BASICS OF VENTILATION

3

THREE QUESTIONS ABOUT VENTILATION

Why is air replaced in dwellings?

Good ventilation promotes healthy living for both residents and the building.

 Air in a dwelling needs to

be replaced in order to remove humidity brought about by living as well as impurities
emanating from structures and human bodies. Impurities of indoor air include carbon dioxide,
formaldehyde, radon and other gases as well as dust.

Mechanical ventilation is needed in order to be able to adjust air circulation as needed by
the 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 indoor
and outdoor air temperatures, or because of winds. This means that ventilation is dependent
on weather conditions and cannot be regulated.

It is especially important that humidity and carbon dioxide content of indoor air stay at a
healthy 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 in
indoor air if humidity exceeds 50%, and if humidity stays at over 60% for a long time in
winter, water will condense in the cold structures of the house and mould will start to form.

The recommended maximum carbon dioxide content in good indoor air is circa 1,000 ppm.

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 in

bedrooms.

• The bathroom and 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.

How much air is replaced?

For air to be clean to breathe, it has to be replaced with outdoor air 

once in two hours.

 In a

new and a renovated house, air needs to be circulated continually, at least once an hour,
during the first year in order to remove harmful gases and structural humidity. In buildings
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, and reduced
during very cold periods or when there is nobody at home.

Window ventilation

Dwelling-specific supply / extract air circulation by no means prevents you from opening
windows and the door to the balcony or airing through them. In window or door ventilation,
however, attention needs to be paid to the following factors:

1. During the heating season window ventilation consumes, uncontrollably, a considerable

amount of energy.

2. An open window lets in dusty and dirty air.
3. An open window also lets in noise pollution.
4. During summer, door / window ventilation may bring in air that is warmer than that in

the dwelling.

SEASONAL CALENDAR

Spring:

• Wash or replace the coarse filter and replace

the fine filter if needed.

• Clean the fan blades and the post-heating

unit if needed.

• Check that summer ventilation is in operation.

When this is the case, extract air does not heat air
coming from the outside.

NOTE!
For further details, see inner pages.

Autumn:

• Wash or replace the coarse filter and replace the

fine filter if needed.

• Check that the heat recovery cell is clean.
• Check that the condensing water outlet is not

clogged.

• Switch summer ventilation off.

Summary of Contents for TSK Multi 80 MC R

Page 1: ...LLOX CODE 3468 INSTRUCTIONS FOR USE AND MAINTENANCE Supply extract ventilation with heat recovery for dwellings in blocks of flats and terraced houses VALLOX We reserve the right to make changes witho...

Page 2: ...t smell fusty when you enter the room in the morning Washing and drying clothes Boost ventilation in washing and drying fa cilities during these activities Taking a sauna bath Boost ventilation in bat...

Page 3: ...high especially in bedrooms The bathroom and 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 vent...

Page 4: ...en needed as combustion air for a wood heated sauna oven The resident may regulate the power of ventilation air circulation as needed Filtering Outdoor air is filtered before taking it in to the dwell...

Page 5: ...ng for example sauna baths cooking clothes washing or family parties If the user does not know the measured air flows the adjacent table shows approximate extract air flows as well as the total electr...

Page 6: ...ectric box which stops the outdoor air fan in advance The thermostat has been set at the factory to stop the fan when exhaust air temperature goes down to 5 C The fan restarts as soon as exhaust air t...

Page 7: ...eed for ventilation is fairly small and air is good Speed 3 is used when there is a need for boosting for instance in the following situations cooking taking a sauna bath drying clothes use of toilet...

Page 8: ...There are four power ranges available Speed 1 Use during absence When the dwelling is empty ventilation can temporarily be diminished Speeds 2 and 3 These are speeds that are normally used Speed 2 is...

Page 9: ...one when needed preferably at one year intervals depending on local air quality It is recommended to replace filters in autumn This way the filters stay cleaner throughout the winter and can effective...

Page 10: ...pull the fan out of the unit for maintenance When mounting the fan back make sure that it tightly fits the collar 10 Other cleaning During maintenance also check the general cleanliness of the inner s...

Page 11: ...ed fan Follow the same instructions as for the cooker hood connected to the ventilation unit For special instructions see the instructions of the cooker hood NOTE It is absolutely forbidden to flamb u...

Page 12: ...tdoor temperatures check the operation of the antifreeze thermostat The function starts as soon as outdoor temperature goes below 10 C The threshold is not absolute but is dependent on the length of t...

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