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!
Last seen: Jan 27, 2026
@f1p apologies, you are absolutely correct
@ashp-bobba I agree. I think I'll simplify the system just or my own sanity. It's still oversized using the 30w/m2. I've got a garden office being ...
@f1p Thanks for the reply. Am I not right in thinking it's min =17L/min and max = 40L/min with optimal 32L/min? Model: PUZ-WM112VAA
The limit on this is 28L/Min, which I think I'm right in thinking the way they work will prevent the flow for the whole pump to never exceed 28L/min? ...
@ashp-bobba Its the flow from the outdoor unit prior to the filter
Just noticed this balancing valve on the flow pipe - do these come as standard? Seems odd since the recommended flow is 31 L/min and the maximum is...
@ashp-bobba Thanks for the reply. Would it not work that lowering the pump speed will give the system more time for the heat to be dissipated throu...
Okay, so simply I've got an oversized ashp which is required to produce more heat than can be expelled into the house, thus it constantly switches to ...
@ashp-bobba interesting, but currently the way I’m running the ufh it’s constantly calling for heat, it will never satisfy the room thermostats. so...
@ashp-bobba Hi Bobba, It’s an FTC 6, house was built in 2024. Yes, when the play button goes it switches the pumps off. I’ve asked the pl...
@f1p thanks for the post. interesting, I wonder in that case its modulating down, I think the ashp is massively oversized for the heating d...
@ashp-bobba hey Bobba+Mars, thanks for jumping on the thread. Indeed, the two pumps which switch off are: Heat Pump Circulating...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Jokes and fun posts about heat pumps and renewables
Damn, I pressed the button on my new heat pump too soon...
By ian33a , 3 hours ago
-
RE: Safety study for plug in batteries out to tender - looks like Q3 2027 at best before legal
I think it may depend how much of the world is on fire ...
By EtchedPixels , 7 hours ago
-
RE: Air-to-Air Heat Pumps & Air Conditioning: UK Heating and Cooling Q&A
I hope it's not the same people who make the awful TV s...
By EtchedPixels , 7 hours ago
-
RE: Why are ASHP installs so expensive?
ECO4 is classic British idiocy, "save" money by requiri...
By EtchedPixels , 8 hours ago
-
RE: Renewables & Heat Pumps in the News
We need more building inspectors anyway and less self-s...
By EtchedPixels , 8 hours ago
-
RE: Does anyone have experience of a smart water meter?
@majordennisbloodnok That is my thinking precisely, I s...
By Toodles , 16 hours ago
-
RE: Replacing Storage Heaters with a Heat Pump in a Stone Cottage
I found some interesting data about the price of heat p...
By Rob of York , 22 hours ago
-
RE: PV and battery long payback - sense check query
Thanks for all the comments. I finally got to the bott...
By DavidB , 1 day ago
-
RE: Indevolt Batteries UK Support & Info Thread
People following this thread who are hoping that plug i...
By JamesPa , 1 day ago
-
RE: Passiv Smart Thermostat - Help & Forum Support
By Singlespeed , 2 days ago
-
RE: Help me keep the faith with my air source heat pump installation
just had Vaillant over to service the HP and asked abou...
By AdamK , 2 days ago
-
RE: tepeo ZEB UK Support & Info Thread
OK so ZEB is basically a variant on a storage heater, b...
By JamesPa , 3 days ago
-
RE: Heat Geek installations: share your experiences
@editor I suspect that the Heat Geek online quote is a ...
By AndrewJ , 3 days ago
-
RE: Adding additional Solar Panels to a DC coupled battery system
Ah, yes. Thanks for clarifying.
By Transparent , 3 days ago
SPONSORS
