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Joined: Jan 20, 2022
Last seen: Nov 6, 2026
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Topics: 16 / Replies: 3431
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RE: Two heating zones to one zone

@profzarkov - where is that Tempest water cylinder situated?Is it within the heated envelope of the house?... or in a porch, garage, basement? Am I ...

2 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S

Do you have a source reference to Viessman's manuals where this approach is described by them?   Well, yeees... but where is the sensor ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Glass lined Cylinder for private water supply

I have one of those... a Thermal Store. In my case the secondary heat source is a solar-thermal array, which has its own coil at the bottom of the 2...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Glass lined Cylinder for private water supply

I too have a private water supply. It's a well holding around 10,000-litres, and was blasted with dynamite when you were still allowed to do such thin...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S

Guildford is a University town. If Jon were there, there a reasonably high probability that the local data he'd want is already made available for use...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S

Did Jon opt to use ERA5 data...? ... or was it Claude's choice?   @jon - please join in here. This is a discussion topic rather than a th...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S

@jon - I'm finding this particularly difficult to follow because it's all text! Can you not post the graphs on which your comments are based? &nbs...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Adding additional Solar Panels to a DC coupled battery system

That makes sense, and concurs with a lot of online chatter from 'influencers'. Check the rules on using a dedicated hardwired connection to your bal...

2 months ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Adding additional Solar Panels to a DC coupled battery system

A couple more points about placing solar panels at low level: Unlike an installation on a high-roof, panels on a shed or garage are less likely to b...

2 months ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Adding additional Solar Panels to a DC coupled battery system

Let's deal with mounting systems first. You don't have to use a proprietary brand of aluminium rails. The shipping costs can be prohibitively expens...

2 months ago
Forum
Solar Photovoltaic (PV)
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