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JamesPa
JamesPa
@jamespa
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Joined: Apr 3, 2023
Last seen: Sep 15, 2026
Profile Activity
Topics: 27 / Replies: 5380
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Reply
RE: Advice on Vaillant Sensocomfort

I dont know for certain about heatpumpmonitor, the kit recommended for it (see openenerymonitor) almost certainly has its own connectivity. Openenerg...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Debugging my legionella immersion heater

I notice this (66 is rather hot) with my legionella cycle, which in my case is done natively on the ASHP. In the accompanying ASHP app there is even ...

4 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Setback savings - fact or fiction?

You are right to be intrigued by it IMHO. SOFAIK it is the only system currently available that both controls the heat pump flow temperature and the ...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

I agree, but in assessing the 'saving due to setback' its essential IMHO to take into account the 19:00 IAT deficit in order to compare the setback an...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

  That's great thanks. I dont have the time today to 'process' this but will in the next couple of days (which also gives me time to think m...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

Great. I will try to zoom in to work out the deltas between the two lines unless you have an easy way to do that (which would be helpful). The 9pm o...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Sizing an ASHP; Heat loss and kW

You can't measure heat loss with a website. But you can get a good estimate if you know your fuel consumption.   Where are you located, what...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Buffer Tank Dixell Setpoint vs Weather Compensation Flow Temp on Altherma 3M Heat Pump... Will It Ever Trigger?

Hi Welcome to the forums and please be assured that no question is dumb. Just like boiler based systems, heat pump based ones differ from house t...

4 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Setback savings - fact or fiction?

@cathoderay - thats great. Is there any possibility to do your clever trend line/statistical analysis on these. Eyeballing I would guess the two b...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

Great. I dont think it yet gives us the answer, but it maybe tells us the direction of travel. I think the x axis on the plot should however be 24 h...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Estimating true heat loss from twelve months of consumption data

2010litres is indeed likely to be about 8kW, although you need to add perhaps 20% for 18C vs 20C which is the normal design temperature, still nowher...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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