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Thermistor for a Grant QRSC180SL

Air Source Heat Pumps (ASHPs)

Last Post by Grantmethestrength 6 months ago

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Grantmethestrength

(@grantmethestrength)

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Joined: 8 months ago

Posts: 108

Topic starter 14/04/2025 12:46 pm

Does anyone know how far into the sensor pocket the thermistor goes. I.E. If I get a two metre cable how much “tail” will I have left?

This topic was modified 6 months ago by Grantmethestrength

Kind Regards
Si
——————————————————————————
Grant Aerona3 13kW
13 x 435w + 13x 480w Solar Panels
Sigenergy 10kW Inverter
16kW Sigenstor battery

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Grantmethestrength

(@grantmethestrength)

Reputable Member Member

Joined: 8 months ago

Posts: 108

Topic starter 14/04/2025 1:25 pm

The all mighty Claude AI reckons between 100-150mm but as we all know the AI’s and the 5G’s have been wrong before! 🤣

Kind Regards
Si
——————————————————————————
Grant Aerona3 13kW
13 x 435w + 13x 480w Solar Panels
Sigenergy 10kW Inverter
16kW Sigenstor battery

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Mars

(@editor)

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Joined: 5 years ago

Posts: 3503

14/04/2025 10:49 pm

@neil is this something you could advise or assist with?

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Grantmethestrength

(@grantmethestrength)

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Joined: 8 months ago

Posts: 108

Topic starter 15/04/2025 7:30 am

Cheers @editor I managed (with the help of a mirror) to take a look inside. If this helps anyone else (as I genuinely didn’t know) the sensor pocket is just a tube through the insulation and you just push you temp probe in, mine is about 150mm in depth, I have a little probe with a digital display in there at the minute but the NTC 10K / B3950 thermistor to connect to the heat pumps is arriving today.

Kind Regards
Si
——————————————————————————
Grant Aerona3 13kW
13 x 435w + 13x 480w Solar Panels
Sigenergy 10kW Inverter
16kW Sigenstor battery

🤩

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Mars

(@editor)

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Joined: 5 years ago

Posts: 3503

15/04/2025 7:32 am

@grantmethestrength, Neil’s on vacation, but he DM’d me saying: “The answer to the cylinder question is 120mm. So he’ll be left with 1.88m for a 2m sensor.”

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Subscribe and follow our Homeowners’ Q&A heat pump podcast

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Grantmethestrength

(@grantmethestrength)

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Joined: 8 months ago

Posts: 108