Forums

Forums
Renewable Heating
Thermostats, Volumi...
Under floor heating
 
Notifications
Clear all

Under floor heating

 
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Last Post by Mars 3 years ago
3 Posts
3 Users
0 Reactions
1,940 Views
RSS
 Mike Patrick
(@mike-patrick)
Honorable Member Member
Joined: 4 years ago
Posts: 172
Topic starter 13/02/2022 5:33 pm  

In my continuing quest to reduce our electricity consumption I've so far mostly focused on the heat pump and its settings.

I've not looked much at the overall installation.

We have underfloor heating (ground floor and first floor). From a comfort perspective this is great as there are no hot spots or the pipework and wall space taken up with radiators.

Does anyone know what the specifications are for the spacing between the heating loops? Is it different for an ASHP installation compared with say gas. I presume it's yes as with gas heating the fluid will be circulating at a higher temperature.

I've not thought to check this before but as I have a lot of photos from when the sytem was being installed I'll be able to check whether or not it conforms.

 

Mike

 

Grant Aerona HPID10 10kWh ASHP


   
Quote
 Derek M
(@derek-m)
Illustrious Member Member
Joined: 4 years ago
Posts: 4427
13/02/2022 6:31 pm  
Posted by: @mike-patrick

In my continuing quest to reduce our electricity consumption I've so far mostly focused on the heat pump and its settings.

I've not looked much at the overall installation.

We have underfloor heating (ground floor and first floor). From a comfort perspective this is great as there are no hot spots or the pipework and wall space taken up with radiators.

Does anyone know what the specifications are for the spacing between the heating loops? Is it different for an ASHP installation compared with say gas. I presume it's yes as with gas heating the fluid will be circulating at a higher temperature.

I've not thought to check this before but as I have a lot of photos from when the sytem was being installed I'll be able to check whether or not it conforms.

 

Mike

 

Hi Mike,

From what I remember there are set spacings that are used, dependent upon the calculated heat loss for the various areas. I think the standards are 100mm, 150mm and possibly 200mm.

Just like increasing the size of a radiator will provide more heat energy, the same is true of having more UFH pipework. Obviously the more pipework the greater the cost, but it should allow the system to operate at lower water flow temperatures, which would improve the efficiency in a heat pump based system. When UFH is used with a gas boiler, the water would have to be mixed to lower its temperature for use in UFH, so having more pipework closer together would not necessarily be beneficial.


   
ReplyQuote
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 4 years ago
Posts: 3366
13/02/2022 10:12 pm  

@mike-patrick, I don't know what the actual spacings should be in mm or cm, but the spacing will vary for an oil/gas system versus a heat pump due to the varying flow temperatures. 

We have UFH that was spaced for an oil boiler and the mixer for the UFH was set to 35C. We've basically disabled that by setting it 55C – our flow is 45C. That temperature works very well with our UFH and our downstairs is always comfortably warm.

Not sure that helps you.

Buy Bodge Buster – Homeowner Air Source Heat Pump Installation Guide: https://amzn.to/3NVndlU
From Zero to Heat Pump Hero: https://amzn.to/4bWkPFb

Subscribe and follow our Homeowners’ Q&A heat pump podcast


   
ReplyQuote



Forum Jump:
  Previous Topic
Next Topic  
Share:

Join Us!

RHH Awards

👉 Vote for “Heat Pump of the Year”

👉 Vote for “Best Manufacturer Customer Support”

👉 Nominate “Heat Pump Installation of Year”, “Best New Tech or Innovation” or “Turkey of the Year” here!

Latest Posts

Members Online