ᐅ Backflow Filter / Optional Heat Pump Add-on

Created on: 29 Jan 2020 19:23
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Andre77
Hey,

I had the initial consultation with the plumbing company today.

They offered to upgrade the included "DIN-DVGW certified water filter" to a backwash filter for 120€ (probably net).

Is this recommended? Is the standard filter sufficient? With the backwash filter, it seems the filter replacement, which is normally required at intervals with the standard one, would no longer be necessary.

They also offered to improve something in connection with the heat pump. I can’t quite remember what it was. Maybe someone knows what this could be about—something like self-filling and turning two knobs... and it’s supposed to be very simple, but if the service team comes and takes a sample and detects contamination, then the service becomes more difficult... if I remembered that correctly...

Thanks for any feedback!
Mycraft7 Mar 2020 08:35
You don’t need the Purotap. It is basically just a VE cartridge. So, if you ever wanted to change the water in the heating system (which you should definitely avoid), then you would need it.

But since the installer of your system is obligated to hand over a defect-free system and to fix any leaks if necessary, this part is basically an unnecessary extra.
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Andre77
7 Mar 2020 09:05
@tomtom79
Do you have a picture of how something like that looks in your setup?

@Mycraft
What exactly does this device do? I remember the plumber saying that if there’s a defect or something similar, the water gets tested or analyzed, and possibly the manufacturer might refuse warranty coverage if any negative results come up. At least, that’s how I recall it.

Or is it just an extra service offered by the plumber?

Thanks!
tomtom797 Mar 2020 09:18
Water filtration system with pressure gauge, foam-insulated valves, and white filter cartridge.
Mycraft7 Mar 2020 09:31
This device is a water softener. It softens the water so it can be used in the heating system. Hard water in underfloor heating can cause damage. However, a properly installed system must use soft water anyway, which the plumber is responsible for ensuring. If the system needs to be refilled, the plumber should come with the necessary equipment and desalinate the water on site.

So yes, it is an extra task for them and for you, it provides an option to refill yourself. But ideally, you should not do this on your own, at least not during the initial period while the warranty is still valid.
tomtom797 Mar 2020 11:12
@Mycraft This is not a water softener; it is a desalination system—a small but important difference.

One filters out lime scale, the other removes minerals.
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guckuck2
7 Mar 2020 13:11
The installation is done by the plumber using their equipment. If a refill is necessary, small amounts can also be added with tap water. Don’t let anyone convince you to buy the device, it’s unnecessary.