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Post Buffer Tank DUCA Circulating Pump Settings

 
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Last Post by Potatoman 2 years ago
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 Potatoman
(@potatoman)
Trusted Member Member
Joined: 3 years ago
Posts: 57
Topic starter 02/12/2024 9:34 pm   [#1908]

Does anybody know what is the best setting to have your heat pump, post buffer tank circulating pump set to, there are 5 settings: iPMW, AUTO, PP, CP & CS.



   
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Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 6 years ago
Posts: 4973
02/12/2024 9:55 pm  

Could you post a photo? Is it a Grundfos?


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 Potatoman
(@potatoman)
Trusted Member Member
Joined: 3 years ago
Posts: 57
Topic starter 02/12/2024 10:03 pm  

@editor  Hi, it is a DUCA

pump


   
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Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 6 years ago
Posts: 4973
03/12/2024 3:04 pm  

@potatoman I raised this with Secon, and here's what they say:

"If you have a PWM connection then leave it in PWM. If not, auto is always safe. If it's a particularly long pipe run, you might need constant pressure (CP) maximum speed."

Does that help?


Dad’s Outside with the Heat Pump Again
He wanted to save the planet. His family just wanted him to come inside.
Get the book → · Free UK shipping
The Ultimate Guide to Heat Pumps · Britain’s Heat Pump Shitshow
Heat Pumps Explained · From Zero to Heat Pump Hero · Bodge Buster
From Zero to Heat Pump Hero and Bodge Buster are rewritten and updated for 2027.
New to heat pumps? Heat Pump Fundamentals course — 50% off with INTRO50.


   
👍
1
ReplyQuote
 Potatoman
(@potatoman)
Trusted Member Member
Joined: 3 years ago
Posts: 57
Topic starter 09/12/2024 7:27 pm  

@editor Hi, yes it does, thank you



   
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