Ideal Logic ASHP - change from 55°C to 35°C Heating?
Ok on second thoughts scrub the questions. Id be tempted to optimise the rads as previously described. If you find that this results in a rad curve lower than 0.8 (IE the rads can run at a lower temp than the ufh), assess what to do with the ufh. If there is scope to run it at lower ft do so otherwise this will be the limiting factor. It would be quite unusual however for rads to be sized so they need a lower ft than ufh.
4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.
Agree - I will finish optimising the rads before I think about the UFH
UFH temperature is adjusted with the mixing valve located on the manifold. It's currently set at 50°C which is the max setting but can be dialled down if needed. The speed of the pump can also be tweaked to increase or decrease the flow rate. The flow meters can also be adjusted for each loop if needed but fully open up when the UFH is on.
I've now opened the rad TRV's to max and will monitor the heating performance over the coming days.
UFH should never be at 50C since small feet can get burned. I think the regs say 39(?). But your floor covering could be damaged too unless it’s tile or concrete. Nobody want pipe shaped marks on their wood or blown adhesive on LVT.
2kW + Growatt & 4kW +Sunnyboy PV on south-facing roof Solar thermal. 9.5kWh Givenergy battery with AC3. MVHR. Vaillant 7kW ASHP (very pleased with it) open system operating on WC
Good point. I’ll keep my eye on the manifold temperature gauge which is currently showing 30C with the room temperature currently at 19C. After changing the heat curve yesterday from 1.5 to 1.3 the heating flow temperature has reduced from 50C to 45C. I’m not sure the UFH would ever reach the same temperature as the flow but best to keep my eye on it to prevent the issues you have mentioned. Thanks for your help. It’s great to learn from others, especially through forums like this one
- 26 Forums
- 2,220 Topics
- 49.2 K Posts
- 93 Online
- 5,880 Members
Join Us!
Podcast Picks
Latest Posts
-
RE: Aira Heat Pump: Stylish Scandinavian Heating
Having joined the Aira owners group on Facebook (for so...
By Pirate Rich , 5 hours ago
-
RE: Should Our Water Circulation Pump Be Configured to Run All The Time?
Interesting. So if you set blocade it can't know the c...
By JamesPa , 7 hours ago
-
RE: Widespread failure of insulation installation
@jeff Along with a phone-in on BBC Radio Four today, mu...
By Toodles , 7 hours ago
-
RE: What is the Heat Geek Guarantee?
@editor Thanks Mars, it is encouraging that Heat Geek a...
By colinc , 7 hours ago
-
RE: 5 Star Service from Havenwise
Ok…a bit tumbleweed. From our own experience we were ...
By benson , 7 hours ago
-
RE: Renewables & Heat Pumps in the News
Love the thought of it! simplification and sometimes me...
By Batpred , 7 hours ago
-
RE: New Fogstar 15.5kWh upright solution
That's good news for the moment anyway. Can we try to...
By Transparent , 8 hours ago
-
RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
Hi, I've always found Henri to be super helpful. From ...
By davidnolan22 , 8 hours ago
-
RE: Help me keep the faith with my air source heat pump installation
@adamk Will not even get started... The power of the ...
By Batpred , 9 hours ago
-
Sounds like you got it working for monitoring! With wel...
By Batpred , 9 hours ago
-
RE: Are We Sleepwalking Into Another Race to the Bottom?
Thank you Aadil. We appreciate you taking the time to r...
By Mars , 10 hours ago
-
RE: Say hello and introduce yourself
@chris12 Let us hope that next year will be a bumper so...
By Toodles , 13 hours ago
-
RE: Isolating the system for a planned power cut
@batpred - that Solis installation page is too vague. ...
By Transparent , 13 hours ago
-
RE: Heating Turned Off but Radiators Still Warm
I love Necromancy... but to follow James, heat pumps WI...
By DREI , 13 hours ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
12kW Gen 6 AE120BXYDEG (currently NOT performing well a...
By DREI , 13 hours ago
-
RE: Heat loss calculations and how they work in conjunction with heat pump sizing
Buffer tanks can best be thought of as part of a 'produ...
By JamesPa , 15 hours ago
-
Very Much Awake – Renewing the Heating Industry One Step at a Time
Like any industry that touches so many lives, and is so...
By Aadil Qureshi , 17 hours ago
-
Ah.... I'd like to make a couple of observations: &nb...
By Transparent , 17 hours ago
-
RE: Battery storage to run Heat Pump.
Hats off to the ones that persist, @Transparent ! ...
By Batpred , 17 hours ago