VMC Df Akor HR from Unelvent

[david adv]

as my vmc akhor made very little noise and sucked little, I wondered if there was not a pb, which could possibly be adjusted with the potentiometer.
Seller response: it is factory set, do not touch it!

This completes the bullit experience well: you should not count on abundant and reliable information .... more than experimentation.
who has a hot wire thermometer? I have the anemometer and the wattmetre.

Not too much time to tweak right now, I would still see the condensation in the exchanger this week

[Bullitt]

I had read in a forum that a person who had this CMV recovered up to 5 liters of condensation water per day, on very cold days.

Right now, it's pretty mild, between 7 ° in the morning and 14 ° in the afternoon, but I don't get anything. Not a drop.

It worries me a little.

Did your installer tell you it was set at the factory?

I think that the installers and resellers are also little informed, the VMC being recent, and they have little feedback, the answer that we made to you is an uninteresting answer.

I will go see my dealer to find out what this second knob is for and the RJ45 jack on this VMC.

Maybe also by contacting unelevent technical support, if there is one!

[ZZ4444]

Hello everyone,

I discover this forum, very interesting!

And maybe you can help me, because I'm about to take the step of VMC ...

We moved a year ago to an apartment which turns out to be very humid: spots appeared on the ceilings. We understood very quickly that we had to air a lot and often but we live in a very cold region, in short it is not ideal ...

It seems to us that the VMC would solve these problems and in addition brings a thermal gain, in short, the miracle solution ...

A friend of a friend came to give us a quote (he has a business, so all that is more legal as a quote), and he precisely offers us this CMV: AKOR HR 10

Our apartment: two bedrooms, 90 square meters, top floor of a two-story house + ground floor.

Above our apartment is the combes, with concrete slabs and glass wool laid on these slabs.

The idea: carrot the ceiling: in and out in each room of the apartment, the engine would be in the attic (so from what I read it will be necessary to insulate it), and exit / evacuation by the roof .

Here is the proposed quote. To read to you, it seems very expensive to me, but I prefer to have your opinions. Of course I will ask for a second quote from another company ...

Material Quantity Unit price Total price
Plastic sheath GP ISO 125 3 48.65 145.95
Plastic sheath GP ISO 150 3 60.97 182.91
Plastic sheath GP ISO 80 15 10.45 156.75
Grid flap and hat 3 64.81 194.43
Ventilated / heated / various dom taken 150 2 43.96 87.92
Distributor access 10p 2 89.5 179.00
AKOR HR pavilion vmc system 10 1 2225.00 2225.00
HYDRA CC T3H pavilion vmc system 1 457.58 457.58
Adjustable grid 8 60.00 480.00

TOTAL MATERIAL TTC 4725.97 (15% VAT)

PVC tube dia. 35 for condensation 1 245.00 245.00
Switchgear supply 1 210.00 210.00
Protection, floor insulation and carrotage 1 1400.00 1400.00

TOTAL 6580.971

Thank you for your advice and your help, I will keep you posted for my project.
Good Sunday!

[Bullitt]

Hello,

On my invoice, this is what it cost me (price in bold):

Material Quantity Unit price Total price
Plastic sheath GP ISO 125 3 48.65 145.95 15.24 € per unit HT
Plastic sheath GP ISO 150 3 60.97 182.91 19.57 € HT unit
Plastic sheath GP ISO 80 15 10.45 156.75 11.17 € HT unit
AKOR HR pavilion vmc system 10 1 2225.00 2225.00 1523.27 € HT or 1824.84 TTC


PVC tube dia. 35 for condensation 1 245.00 245.00 I put a PVC tube dia 40 mm of evacuation at a low price at all
Switchgear supply 1 210.00 210.00 I just installed a power line between the switchboard and the VMC with a circuit breaker at around 20 euros.

To summarize, once the CMV is purchased, the ducts are missing, and air inlet and outlet, electrical connection and condensation drainage.

However, I have 19.6% VAT.

I think we really have to make another quote, on the one hand, ideally, this VMC is made to be installed in a heated room, if it is installed in the attic the efficiency is not more than 95% but much less .
Then, there is a lot more in your quote, which is due to the construction of your apartment.

I think your quote is expensive, you can lower the price of the VMC and the price of the ducts too.

[ZZ4444]

Thank you very much Bullitt (do you have the Bullit mustang?), It will help me a lot.

Yes I imagine that there are specificities due to my apartment (and yet, it didn't seem very complicated to me), but there, we already have too big differences on the materials ...

Ok, I'm going to start for another quote.

As for the attic, they are not heated but I thought that insulating the CMV would be enough? Otherwise, are there any CMVs with such efficiency that you can place them in unheated roof spaces?

[Bullitt]

Well, no Mustang ... or Jacqueline Bisset on my arm ...

If there is a VMC with such efficiency in the unheated roof space ???

Well in fact, I think not, for a very simple reason, when the exchanger is 20 ° in the house, it is more effective than if it is 5 ° in the attic.

I bought mine from Rexel, very well advised by the seller, who explained to me that the 95% of yield announced is obtained only if the exchanger is warm.

By insulating the box, you will obviously increase the yield, but without obtaining the 95%.

In my attic, there are only the 150 ducts for extraction and aspiration, everything else is either under the cellulose wadding or in the house.

[ZZ4444]

I will pad all of this with glass wool at worst. It won't hurt ... I don't really have any other solutions: basically it's to end the humidity problems, more than for the sake of thermal efficiency.

[Bullitt]

If thermal efficiency is not your priority, there are models of DF with standard efficiency, that is to say 60% which are accessible from 750 € TTC instead of 2225 of your estimate.

Good insulation of the ducts and the exchanger will guarantee good ventilation and correct performance.

The HR is expensive, and effective if it is well installed, and I find it useless to install an HR in unheated roof spaces, so put a standard DF, at significantly cheaper.

You have a choice between Unelvent, Atlantic, and Aldes.

[ZZ4444]

If thermal efficiency is not your priority, there are models of DF with standard efficiency, that is to say 60% which are accessible from 750 € TTC instead of 2225 of your estimate.

Good insulation of the ducts and the exchanger will guarantee good ventilation and correct performance.

The HR is expensive, and effective if it is well installed, and I find it useless to install an HR in unheated roof spaces, so put a standard DF, at significantly cheaper.

You have a choice between Unelvent, Atlantic, and Aldes.

This is a great idea, a great argument that I will submit to the installer!

Thank you very much for your help!!

[Bullitt]

I take 20% of the bill ...