Alec , does this mean that the manufacturer is actually mandating an installation method that's sub-optimal for their own equipment?
Are there makes, other than Grant, available on the UK market which are designed and specified to be installed in the most optimal way?
Mike
Grant Aerona HPID10 10kWh ASHP
@mike-patrick all equipment supllied complies with U.K. regulations, but U.K. regulations do not promote optimal equipment, and that is a problem for many people with heat pumps.
the key question to ask the manufacturer is:
”will the indoor controller proposed by my supplier compensate the flow temperature in tandem with the out door sensor?”
do nt ask the controls supplier or manufacturer but the installer may have the knowledge about compensation or modulating controls
its the heat pump that is lead slave to the Controller
UK heating controls do not compensate flow temperatures
Professional installer
Posted by: @kev-mI'm sure @derek-m will help you with the technical details. However, although my house is smaller than yours at 160m2, its heat requirements are similar because it's older. My average in December is 25.5kWh/day to heat the whole house to 21C for 19 hours/day. As long as the design of the system is sound you should be able to improve on 70kWh/day.
If the EPC is correct, your heating requirements are c. 15000kWh/year. You should normally need 15% of that in December, say 2300kWh. Even at a COP of 2.3, that's 1000kWh/month consumed; a lot less than you're using.
A question; how much hot water do you use?
@derek-m do you have a typical % heating/dwh usage for each month? Would be helpful to do some projected costs for the year based on Dec/Jan usage. Thanks
Posted by: @derek-mHi @webcmg
Check to see if any of the valves are partially closed on any of the radiators.
Check that your water pump is producing adequate pressure and flow to get the water up to the radiators. Try measuring the temperature of your radiators and then shutdown your UFH so that all the flow is going to the radiators. If the temperature of the radiators starts to increase then you have a pressure or flow problem. Try increasing the pump speed.
@derek-m a Vaillant engineer came out today. We've reduced the speed of the UFH pumps and left the radiator pump on a faster setting. We think the bypass may be active on the RAD flow too and I've identified some uninsulated pipes which could be significantly impacting the efficiency. We're getting these things sorted on Monday and fingers crossed there will be an improvement in upstairs comfort levels and energy usage... will keep you posted. Thanks again for your help.
Hi @webcmg
The heating demand will be dependent upon the heat loss of your home, the indoor temperature and the outdoor temperature. The energy required to produce hot water will depend upon the size and heat loss of your cylinder and of course the hot water usage.
So to answer your question, there is no average usage as such, it will vary from household to household. You could look for similarities with of forum members and compare notes.
Posted by: @kev-mI thought @webcmg was looking for the numbers split the heating total over the year up and said you used 15% in Dec, 18% in Jan, 5% Oct, 0% in July, etc. I couldn't find that.
Hi Kev,
I remember someone posting some details about average use in December being 15% of annual total, but it wasn't me, and I don't know where it came from.
Is this what you were looking for?
Run cost estimation per month of heat pump | |
Month | % energy used/ month |
January | 19% |
February | 17% |
March | 12% |
April | 7% |
May | 4% |
June | 2% |
July | 1% |
August | 1% |
September | 4% |
October | 6% |
November | 12% |
December | 15% |
Posted by: @bataltoIs this what you were looking for?
Run cost estimation per month of heat pump Month % energy used/ month January 19% February 17% March 12% April 7% May 4% June 2% July 1% August 1% September 4% October 6% November 12% December 15%
Yes, thank you. This is extremely helpful.
Does anyone happen to know the current month energy consumption update interval for the 700/6 controller? It certainly isn't realtime (no idea why not!) and I have a significant variation in usage at the meter vs usage at the controller. If I can figure out when the controller updates I can rule out something else using so much energy.
Thanks,
Chris
-
Rodents! A word of warning for heat pump owners
4 days ago
-
How can I programme a setback for my Samsung Gen6 8kW heat pump?
3 weeks ago
-
Retrofitting: moving to ASHP old oil boiler in large old property - experience/advice please on MSC calcs
4 weeks ago
-
How to choose Towel Rails for an ASHP
1 month ago
-
How to Zone with a Single Room with UFH
1 month ago
- 26 Forums
- 2,233 Topics
- 49.7 K Posts
- 201 Online
- 5,898 Members
Join Us!
Podcast Picks
Latest Posts
-
RE: Octopus Cosy & Octopus EV + bidirectional smart tariff, together. What, eh?
Thanks for sharing this, it is clearly disappointing, B...
By Batpred , 7 hours ago
-
-
RE: Grant 13kW Aerona3 - issues getting zones to temp
Just to be clear this won’t be a Grant LLH/combo volumi...
By Crimson , 8 hours ago
-
RE: Master & Slave Zones/Setback
Many, perhaps most, heat pumps run their water pumps oc...
By JamesPa , 8 hours ago
-
RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus
Firstly I agree with @grahamf above, very sensible comm...
By JamesPa , 8 hours ago
-
RE: PV Panels on roof in Conservation Area
Update: .... Council said, "Yes", to installing PV &am...
By colinc , 11 hours ago
-
@old_scientist Well it does seem pretty evident that it...
By bontwoody , 12 hours ago
-
RE: Effect of Mitsu PAR WT60 Wireless Controller
@sunandair We were not present to do a tidy changeover ...
By DavidAlgarve , 15 hours ago
-
I’m frankly amazed you think anything I have posted on ...
By Majordennisbloodnok , 18 hours ago
-
RE: Replacing knackered oil boiler with Samsung ASHP - Perthshire
Thanks for your full reply @mike-h. It certainly cleare...
By DowallyDrifter , 20 hours ago
-
RE: Daikin Octopus installation update - I saw my first defrost. 😍😂
I don't seem to have a mixer valve. Just pressure regul...
By Jancold , 21 hours ago
-
RE: New Fogstar 15.5kWh upright solution
😁Yes, the 90Amps capacity in total in an 8k inv...
By Batpred , 22 hours ago
-
RE: Question about Heating Pump Operation mode – Ecodan FTC6 v20.06
Thanks, I have à split model so there is no water circu...
By Johj45 , 2 days ago
-
RE: Say hello and introduce yourself
This discussion has gone quite deep for our Hello &...
By Transparent , 2 days ago
-
RE: Midea ASHP – how to set weather compensation
@pash44pump - it sounds as though you are close to havi...
By cathodeRay , 2 days ago
-
Let's see if we can tempt @glyn-h to give his insights....
By Mars , 2 days ago
-
RE: What crazy nonsense are inverter limits and why are they imposed?
Let's first note what those parameters are. They are ...
By Transparent , 2 days ago
-
I’ve met the Flexi-Orb team, and they come across as ge...
By Mars , 2 days ago
-
Webinar on "Heat Pumps for Home Owners" Thursday 20...
By Mars , 2 days ago