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rhh2348
@rhh2348
Member
Reputable Member
Joined: Feb 2, 2024
Last seen: Dec 30, 2025
Profile Activity
Topics: 9 / Replies: 93
AllTopicsReplies
Topic
Flow rate vs emitter 'openness', and CoP?
11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 2
Views: 1099
Reply
RE: Mixing of pipework/components' with different internal dimensions - theory vs reality/practical approach

No, I don't - reading@heacol recommends removing the mag filter and adding a Y strainer! Thoughts?? Agree, however would the DN19 of the flow se...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mixing of pipework/components' with different internal dimensions - theory vs reality/practical approach

Also, in terms of positioning of the 22mm-based components, I'd be keen to know others thoughts on where these would go to optimise flow and their per...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mixing of pipework/components' with different internal dimensions - theory vs reality/practical approach

@johnr The question at that point is, as posed in the OP, for those to go back through 22mm flow sensors and a mag filter to the return to the outdoor...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mixing of pipework/components' with different internal dimensions - theory vs reality/practical approach

@JohnR, I think I've seen something like this for plastic - in essence, each 90deg elbow/T etc creates the equivalent resistance of 0.5m of straight p...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mixing of pipework/components' with different internal dimensions - theory vs reality/practical approach

Cheers for your post, @JohnR Implying that wherever a larger internal diameter can be applied, the friction loss is greatly reduced and therefore a ...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mixing of pipework/components' with different internal dimensions - theory vs reality/practical approach

Thanks for the reply, @bontwoody It's no doubt me, but I've tried a handful of times and can't figure out what this means - sorry, could you write i...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Mixing of pipework/components' with different internal dimensions - theory vs reality/practical approach
12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 17
Views: 2255
Reply
RE: The Definitive Guide to Weather Compensation and Curves for Air Source Heat Pumps

Note that the display only shows the flow temps as whole (integer) numbers but the actual temp set may be different by 0.5C

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The Definitive Guide to Weather Compensation and Curves for Air Source Heat Pumps

In light of some new sub-zero OATs from the past two days, I'd like to amend what I wrote above (but the forum won't now let me edit the post, despite...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The Definitive Guide to Weather Compensation and Curves for Air Source Heat Pumps

Unless I'm misunderstanding something, my FTC6 allows the user to manually set the flow temperature of one OAT between the high and low OATs. This th...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Moving from two zone to single (open) / how to select a circulation pump - advice please

Thanks @heacol Brendon - helps as well as creating more questions! :-/ I appreciate your time and effort in responding. As I'm sure you know, w...

1 year ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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