Flushing an ASHP system (and UFH) questions
Hi all, it looks like my 3.5 year old ASHP (UFH heating downstairs, radiators upstairs) system may need a flush. How such a new system needs a flush is another matter. But I have some general questions for those with more knowledge on such matters.
- Is the process to flush an ASHP system different to a gas one?
- Is the process different for UFH to that for radiators? For example I see videos online of people agitating (with hammer drill) the radiators to loosen dirt.. but surely that would not work with the floor.
- Is the magnet vs high-pressure method of flushing better suited for a) ASHP and b) UFH?
- In other words can any one offering flushing work on my system or do I need to aim for somebody who have experience with ASHP/UFH?
Thanks!
Mitsubishi Ecodan 11.2kW ASHP
Have you had the strainers and metal filters cleaned out? There is a sump on the isolation valve on the outdoor return pipe which has a steel strainer to collect debris. This is the last sump on the return pipe before the circulating water passes through the heat pump. It can get clogged if it’s not cleaned out regularly. This should be done on a regular service. You will need to switch power off to the outdoor unit and isolate both isolation valves before undoing the sump nut. It’s important to return the strainer into place as it stops particles getting lodged in the plate heat exchanger of the heat pump. Water pressure usually needs to be adjusted after inspection. There are other areas where debris can collect.
- 25 Forums
- 1,513 Topics
- 31.8 K Posts
- 25 Online
- 1,283 Members
Join Us!
Latest Posts
-
RE: Additional Battery v Wind Turbine v Ripple
I should add, being an investment, the value of your in...
By Old_Scientist , 2 hours ago
-
RE: Ecodan - flow rates, sensors, settings
Achieving an accurate flow measurement is probably the ...
By Derek M , 5 hours ago
-
RE: Ecodan ASHP - How to optimise my set up?
Again, thank you for another thorough post, @derek-m - ...
By rhh2348 , 7 hours ago
-
RE: Delivering a smart and secure electricity system: government consultation
@Transparent.Now that I am represented by a new MP I th...
By IanMK13 , 9 hours ago
-
RE: Vaillant aroTHERM plus not level or flat - what base is best under an external unit?
Similar thread here
By Johnmo , 10 hours ago
-
RE: VDI 2035 heating water specification
Been looking and it seems a good little project. Ever...
By Johnmo , 1 day ago
-
RE: Do I accept an ASHP and Solar Panel retrofit under the HUG 2 scheme?
Will do. I'm currently waiting for another survey / vis...
By dssr , 1 day ago
-
The company that did the borehole were expecting us to ...
By Johnmo , 1 day ago
-
-
RE: The Misquote That Ruined the Heating Industry
@abernyte manufacturer training is pretty average. They...
By Mars , 2 days ago
-
-
RE: ECO4 Scheme and EPC ratings
@mellow Thanks. Given there is a scheme requirement to ...
By Old_Scientist , 3 days ago
-
RE: Do I just go with the lowest quote for my heat pump?
@jancold To me its a no-brainer then, a max 40C flow te...
By bontwoody , 3 days ago
-
-
RE: Heat Pump Books Beginners – Bodge Buster & From Zero To Heat Pump Hero
@editor Presumably he had some good weather Compensatio...
By Toodles , 4 days ago
-
RE: New Vaillant 7kW aroTherm ASHP or oil boiler dilemma/decision??
Storage capacity really is dependent on storage tempera...
By Johnmo , 4 days ago
-
RE: HP Cycling, Expected or Undesirable
Just a little update. I ordered a longer shielded twin ...
By bontwoody , 4 days ago
-
RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump
Thanks @allyfish for the pics and info. Spoke to the in...
By Mellow , 4 days ago
-
RE: Aira Heat Pump: Stylish Scandinavian Heating
It's been a busy day for calls and emails from Aira. I ...
By MikeH , 4 days ago
-
RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
Hmm. A bit of a nuanced answer, methinks. As I've alr...
By Majordennisbloodnok , 4 days ago
Latest Topics
-
Ecodan - flow rates, sensors, settings
By rhh2348 8 hours ago
-
Replacing mains water with well water
By Johnmo 2 days ago
-
Additional Battery v Wind Turbine v Ripple
By bontwoody 2 days ago
-
By jamespipe 2 days ago
-
VDI 2035 heating water specification
By Johnmo 3 days ago
-
Do I just go with the lowest quote for my heat pump?
By Jancold 5 days ago
-
The Misquote That Ruined the Heating Industry
By Alec Morrow 5 days ago
-
Battery Storage Wiring Gauge Question
By Puff 6 days ago
Members Online
No online members at the moment