Renewable Heating Hub Heat Pump Forums

Search with Wattson
Forums
Renewable Heating
Air Source Heat Pum...
Air source heat pum...
 
Notifications
Clear all

Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!

Air source heat pumps and noise

 
Page 7 / 7
Air Source Heat Pumps (ASHPs)
Last Post by newhouse87 2 years ago
80 Posts
15 Users
43 Reactions
17.4 K Views
RSS
Toodles
 Toodles
(@toodles)
Famed Member Contributor
Joined: 4 years ago
Posts: 2767
20/10/2024 3:54 pm  

@newhouse87 They would sit on the raised pad or base and the heat pump will be bolted with C clamps as @transparent indicated to the rails. The weight of the pump is sufficient to keep the whole assembly from shifting. Regards, Toodles.


Toodles, heats his home with cold draughts and cooks food with magnets.


   
👍
1
ReplyQuote
Transparent
 Transparent
(@transparent)
Illustrious Member Moderator
Joined: 4 years ago
Posts: 3262
20/10/2024 4:02 pm  

Yes. If 400-450mm is adequate for the distance between the feet positions on your ASHP, then those are fine.

Most people don't bolt them down...
.... whilst a few put a bolt straight through the steel channel and the rubber mass, then into the concrete pad below
which somewhat defeats the whole point of its vibration absorbing properties! 🤨 

If you look closely, there's a recess along each side of the foot.
That's the location where it can be held.

BoltFoot

Either drill a hole and insert a long bolt at an angle (as shown in purple),
or else use a steel angle (orange) and a vertical bolt (blue).


Save energy... recycle electrons!


   
👍
1
ReplyQuote
 newhouse87
(@newhouse87)
Reputable Member Member
Joined: 3 years ago
Posts: 234
20/10/2024 4:13 pm  

Think it should be bolted down as it will be on raised pad though. V strong winds here at times particularly today.

Good to know it can be done without needed ex pensive plumber and spark back to extend wiring and lines. Could not sleep in bedroom it's currently attached to when running in winter.



   
ReplyQuote
Transparent
 Transparent
(@transparent)
Illustrious Member Moderator
Joined: 4 years ago
Posts: 3262
20/10/2024 4:29 pm  

If I was going to make my own galvanised steel clamps to hold the feet in place,
then I'd start with some roofing straps.

image

There are two gauges.
The thicker one is about 5mm, which means I have to use a vice and lump-hammer to re-form the angles.

Alternatively, in these far-western realms of England, we still have blacksmiths who will create whatever you wish for 😀 


Save energy... recycle electrons!


   
ReplyQuote
 Judith
(@judith)
Prominent Member Member
Joined: 3 years ago
Posts: 538
22/10/2024 6:25 pm  
GPID_1100640612_TECH_00.pdf

This is the bracket supporting our 7kW Vaillant. It looks more substantial and is designed for an higher upper weight limit and has no noise we’ve heard so far, not even on the legionnaires cycle.

IMG 3201

2kW + Growatt & 4kW +Sunnyboy PV on south-facing roof Solar thermal. 9.5kWh Givenergy battery with AC3. MVHR. Vaillant 7kW ASHP (very pleased with SCOP >4) open system operating on WC


   
👍
1
ReplyQuote
Transparent
 Transparent
(@transparent)
Illustrious Member Moderator
Joined: 4 years ago
Posts: 3262
22/10/2024 7:21 pm  

Interesting photo of that bracket @judith  😀 

That looks to be the version of the Vaillant bracket for walls with external insulation.
It uses 68mm discs to pass the bolt through the outer insulation layer.

The bolt itself is 'glued' to the solid wall beyond the insulation layer using the Hilti HIT-HY-170 chemical anchor.
It's a resin and hardener compound which gets mixed by the flutes on the inside of the nozzle as it gets injected into a pre-drilled hole.

The downside of your installation seems to be the gap left around the 20mm corrugated-plastic conduit which supplies the electricity.
That will need sealing with a low-modulus mastic to prevent ingress of rain.

 


Save energy... recycle electrons!


   
ReplyQuote
 Judith
(@judith)
Prominent Member Member
Joined: 3 years ago
Posts: 538
22/10/2024 9:05 pm  

@transparent it has a virtually clear seal that can barely be seen by eye never mind on a photo. I’ve not proded it (calibrated biro test!) so I’m not sure of the modulus

We’ve got external insulation so it’s the right version of the bracket for us.


2kW + Growatt & 4kW +Sunnyboy PV on south-facing roof Solar thermal. 9.5kWh Givenergy battery with AC3. MVHR. Vaillant 7kW ASHP (very pleased with SCOP >4) open system operating on WC


   
👍
1
ReplyQuote
 newhouse87
(@newhouse87)
Reputable Member Member
Joined: 3 years ago
Posts: 234
22/10/2024 9:10 pm  

Similar bracket to mine but i have no external insulation. Would the external insulation be the reason you have no vibration noise?



   
ReplyQuote
Page 7 / 7
Forum Jump:
  Previous Topic
Next Topic  
Share:

SPONSORS

Join Us!

Installer Finder

Degrees of Separation

Latest Posts

SPONSORS

Click to access the login or register cheese
Protected By
Shield Security PRO