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Derek M
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Derek M
@derek-m
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Illustrious Member
Joined: Mar 4, 2021
Last seen: Sep 19, 2024
Profile Activity
Topics: 7 / Replies: 4405
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RE: Convert Pt1000 to NTC 20 kΩ?

@john-connett What is the problem with the old controller?

1 year ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Convert Pt1000 to NTC 20 kΩ?

@john-connett Hi John. It would appear that there are several possible solutions. You could go down the digital route using something like a digit...

1 year ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: My horrific Samsung heat pump installation and experience

@iantelescope Do you have Glycol in the primary circuit?

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Convert Pt1000 to NTC 20 kΩ?

@john-connett The software part is simple, but how do you output actual resistance? I assume that both the old and new controllers are passing a s...

1 year ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Convert Pt1000 to NTC 20 kΩ?

@john-connett It may be possible to build a simple electronic circuit that could emulate a NTC 20k thermister from a PT 1000 Resistance Temperature ...

1 year ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: My horrific Samsung heat pump installation and experience

@iantelescope For most efficient heat transfer, the primary inlet should be at the top so that the water is cooling as in flows down to the exit at ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

@iantelescope A photo would be useful.

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Convert Pt1000 to NTC 20 kΩ?

Probably the easiest solution would be to see if you can find a NTC 20k sensor that is housed in a probe with the same physical dimensions as the PT 1...

1 year ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: My horrific Samsung heat pump installation and experience

As you state, it is not so much orientation as flow direction. If the PHE is mounted vertically, the flow from the heat pump should enter at the top...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

Our hot water cylinder is at present at a temperature of 69.3C, heated solely from solar PV generation via our Immersun power diverter. Obviously th...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Aira Heat Pump: Stylish Scandinavian Heating

The fact that the app is greyed out could be because the controller is not receiving data from the missing item. The Outside Air Temperature (OAT) sen...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Aira Heat Pump: Stylish Scandinavian Heating

Is the missing device a thermostat or a temperature sensor?

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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