Help with Salus auto-balancing actuators

[JohnMo]

5 hours ago, Ewan said:

intermittent solar gain in one room, would putting auto balancing actuators on help potentially

Don't really see it making much difference to anything.  I found them a waste of money and faff. 

[Guest 34]

On 15/08/2023 at 11:41, Ewan said:

Anyone seen the new Salus THB Ultra ABAs available in the UK yet?

Seem's they've done away with calibration need.

https://saluscontrols.com/gb/introducing-the-ultra-thb-auto-balancing-actuator/
 

Emailed Salus and was told they'd be coming to the UK in Spring this year. I'd add a month or 20 to that estimate to avoid too much disappointment.

[joth]

On 02/01/2024 at 22:52, Guest 34 said:

Emailed Salus and was told they'd be coming to the UK in Spring this year. I'd add a month or 20 to that estimate to avoid too much disappointment.

Anyone know if these arrived in the UK yet?  And, what is their part number? AFAICT everywhere is still stocking THB23030 / THB2430

[JohnMo]

36 minutes ago, joth said:

Anyone know if these arrived in the UK yet?  And, what is their part number? AFAICT everywhere is still stocking THB23030 / THB2430

Keep your money in your pocket, simplify, get rid of zones, then you don't need a devise to compensate for zones switching on and off - which is the intended service of these actuators.

[joth]

1 hour ago, JohnMo said:

Keep your money in your pocket, simplify, get rid of zones, then you don't need a devise to compensate for zones switching on and off - which is the intended service of these actuators.

thanks for this but afraid the advice is not required in this instance, as my use case is completely different actually - trying to shut off water into a fan coil (used for cooling) just after the DHW heat up cycle. Traditional zone actuators are too slow, whereas these Salus ones are much better (faster response time and lower power draw; basically use zero power when open). As I said up thread, if there was an non-autobalancing fast response (i.e. servo driven) actuator available I'd rather go with them 

 

Also FWIW I already have auto balancing actuators on my UFH and they work fine there. I broadly don't use zoning, but I do shut off zones when necessary to avoid specific rooms overshooting.

Edited July 13 by joth

[joth]

On 13/07/2024 at 11:57, joth said:

Anyone know if these arrived in the UK yet?  And, what is their part number? AFAICT everywhere is still stocking THB23030 / THB2430

FWIW it looks there's a few places stocking these THB23031 auto-calibrating models now, e.g.

https://www.ecowizard.co.uk/actuators/salus-thb23031-auto-balancing-actuator/

https://www.plumbarena.co.uk/product/salus-thb23031-ultra-auto-balancing-actuator/

 

[joth]

On 27/11/2024 at 12:25, joth said:

FWIW it looks there's a few places stocking these THB23031 auto-calibrating models now, e.g.

https://www.ecowizard.co.uk/actuators/salus-thb23031-auto-balancing-actuator/

https://www.plumbarena.co.uk/product/salus-thb23031-ultra-auto-balancing-actuator/

 

Also FWIW, I bought one of these new ones and using on my Fan Coil manifold. Totally overkill for the application as I really don't need the auto-balancing function, but it is working fine and has the intended improvement of  O(10secs) to turn off.  This is important to stop a slug of hot water going into the FCU when the UFH comes on during cheap night rate (00.30 am). Up until that point, I want the FCU circuit open and blowing as it uses the ASHP freeze-protect as free cooling for the bedrooms (or the bedroom provides free freeze protection for the ASHP depending on your view), but once heating cycle starts I need to keep the warm water out the FCU. even shutting off the secondary pump doesnt help as the primary pump is strong enough to shunt water through it. And I want to keep the FCU fan going all the time as it still brings in cooler air from the loft to the bedroom which is beneficial even without water cooling.