ᐅ Disable hot water recirculation?

Created on: 17 Dec 2018 11:24

Hello dear forum,

What are your opinions on hot water circulation? We have a 145m2 (1,560 sq ft) house with a Vaillant compact system (Auro Compact VSC S 206) including solar. The hot water system is active Monday to Sunday from 5:40 AM to 10:00 PM, with circulation running from 6:00 AM to 10:00 PM.

To save energy, I would prefer to activate the hot water system and circulation only during the times when we actually need hot water. For example,

6:00 AM - 8:00 AM, 3:00 PM - 10:00 PM.

Is this possible, or could it cause issues with Legionella bacteria?

baschdieh17 Dec 2018 13:46

Thank you for your messages. I will now actually turn off the circulation completely (however, the circulation can only be deactivated in the menu of the Vaillant Auro Compact, since everything is integrated in this unit).
If I change the hot water schedule, will that also disable the solar support, or does the solar system operate independently of the hot water heating settings?

Thanks again!

Nordlys17 Dec 2018 14:05

The circulation should not be related to solar at all. But someone installed that stuff for you, right? They should be able to explain it to you precisely.

dertill17 Dec 2018 15:24

baschdieh schrieb:
If I change the schedule for the domestic hot water

...

Nordlys schrieb:
The circulation shouldn't have anything to do with solar.

Circulation ≠ domestic hot water scheduling

The solar system should still operate even if the domestic hot water schedule is turned off. There is a separate menu for solar control, where this should be visible and selectable or deselectable.

If the circulation pump is integrated into the boiler, then switching it off or having a separate connection is unnecessary. In that case, control it via the schedule to turn it off or limit its operation.

Nordlys schrieb:
but didn't someone install that for you? They should be able to explain it clearly.

Exactly

ᐅ Disable hot water recirculation?

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