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Last seen: Oct 26, 2026
It depends in which clearance-sale you trawl for bargains. 😉 I paid £11 because the wholesaler was going to be stocking a rival to Alpha-wire in fu...
Yes. If you've only got one RS485 port on the end of the cable, then you won't need a terminating resistor. I'm currently experimenting using a scre...
Yes of course I'll share what results I get.But as I said, I've only just imported these modules. They're still sat on the workbench, not connected to...
If you want to place a few temperature or voltage sensors around your heat-pump, you could consider using an analogue acquisition module with a Modbus...
Oh great - more hardware questions. 😀 FTP is well beyond the cable spec you're after. But it'll do ok.Let's remember that RS485 gets deployed in re...
I do have whole-house MVHR.I'm going to avoid commenting on that whilst we discuss the heating system. Let's remember @newhouse87 that although we a...
That's why @derek-m suggested that you're "running it like a gas boiler". 😉 You don't control a heat-pump with periods of being "on" or "off" using...
Returning to your earlier photo; do these UFH pipes all go directly into the concrete floor? ... or are most of them running through pipe insulati...
@newhouse87 As I don't yet have a heat-pump, I'm unable to comment on the sound. But I could comment on the inappropriate approach to wiring the act...
It's usually the case that the USB adaptor end 'offers' the 120R impedance by default. You therefore need to place that matching resistor at the oth...
You'll only need one 120R resistor @cathoderay - at the far end of the RS485 line. 🤔 I've been assembling a range of Modbus devices over the past ...
@newhouse87 - clarifications..... ... take care when reading the questions here because we don't want to make incorrect assumptions. 1:@derek-...
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RE: Electrical works for air to air heat pump
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Good to hear that you found a solution. Absolutely a...
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RE: Say hello and introduce yourself
@e-a-west as the good Major said, welcome to the forums...
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