Which clothes dryers in the utility room, controlled residential ventilation without bypass, what is bypass

2012-08-09 13:51:58

Hi!

For the central controlled residential ventilation, I have found the following important points to consider so far:
- Extractor fan only with recirculation
- Doors with gap at the bottom
- Wood stove with room air-independent supply air

A few points that are still unclear to me:
- Clothes dryer in the utility room. There are some with recirculation and some with exhaust air to the outside.
Which one do I have to choose?
Do I also have to ventilate this room? (Supply or exhaust?)

- Bypass
what is the difference compared to a controlled residential ventilation without bypass?

- Shock ventilation function:
Shock ventilation can be done via switch or automatically.
What exactly happens there?

- and finally:
what are the additional costs for bypass and shock ventilation function in the purchase price?

Maybe someone can explain this to me.

best regards
phobos

2012-08-09 14:49:28

Hi!

For the central controlled residential ventilation, I have so far found the following important points that need to be considered:
- Exhaust hood only with recirculation
- Doors with a gap at the bottom
- Wood stove with room air-independent supply air

A few more points that are not yet clear to me:
- Clothes dryer in the utility room. There are those with recirculation and those with exhaust air to the outside.
Which one do I have to take?
Do I also have to ventilate this room? (Supply or exhaust?)
Take a condensation dryer. If it is not necessary, I do not make an additional hole in the wall.
Normally, the utility room is an exhaust air room (air is extracted).

- Bypass
What is the difference compared to a controlled residential ventilation without bypass?

With bypass (which all current controlled residential ventilation systems with heat recovery have), you specify your comfort temperature. If the outside air temperature is above this, no heat recovery takes place and no heat is transferred to the supplied outside air.

- Boost ventilation function:
Boost ventilation can happen via switch or automatically.
What exactly happens there?

For example, after bathing/showering/cooking, this function can be activated accordingly in a decentralized manner – the ventilation runs at the highest level for a predetermined time and then returns to the previous setting.

- And finally:
what are the additional acquisition costs for bypass and boost ventilation function?

Bypass: all current controlled residential ventilation/heat recovery systems have it. Boost ventilation function: ask – but it should not be significant as it is, for example, only an additional switch in the bathroom.

Maybe someone can explain this to me.

You're welcome. I hope it helps somewhat.

Regards
phobos

Greetings........

2012-08-10 07:17:25

Hi Cascada,

thanks a lot. You explained it well, even I understood it;)

regards
phobos

2012-08-10 13:17:59

Hi!

So far, I have found the following important points to consider regarding central controlled residential ventilation:

- Exhaust only with recirculation

Is this really the case?

2012-08-10 13:34:57

Is this really the case?

Yep. A controlled residential ventilation system can only work if the building envelope is airtight. If you pump out 100m³/h with an exhaust hood, you will create a negative pressure in the house. This means either turning off the controlled residential ventilation when the hood is running and tilting the window or using recirculation. Turning off the controlled residential ventilation can possibly be done with a window sensor and a sensor on the hood.

But with controlled residential ventilation, you only need the hood as a grease filter anyway. Odors and humidity are then removed by the controlled residential ventilation itself.

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Which clothes dryers in the utility room, controlled residential ventilation without bypass, what is bypass

phobos

Cascada

phobos

Baufie

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